CN117930047A

CN117930047A - Battery module fault early warning method, device, equipment and storage medium

Info

Publication number: CN117930047A
Application number: CN202410104361.4A
Authority: CN
Inventors: 曾卫海
Original assignee: Xiamen Hithium Energy Storage Technology Co Ltd
Current assignee: Xiamen Hithium Energy Storage Technology Co Ltd
Priority date: 2024-01-24
Filing date: 2024-01-24
Publication date: 2024-04-26

Abstract

The disclosure provides a battery module fault early warning method, device, equipment and storage medium. The method comprises the steps of obtaining performance parameters of total positive and negative output ends of a battery module, wherein the performance parameters comprise at least one of voltage values of the total positive output ends and the total negative output ends of the battery module and temperature values of the total positive output ends and the total negative output ends of the battery module; if the performance parameters of the total positive and negative output ends of the battery module meet the preset fault conditions, determining that the battery module has faults, and obtaining fault information of the battery module; and sending fault information of the battery module to the user equipment so as to perform fault early warning.

Description

Battery module fault early warning method, device, equipment and storage medium

Technical Field

The disclosure relates to the technical field of energy storage, in particular to a battery module fault early warning method, a battery module fault early warning device, electronic equipment and a computer readable storage medium.

Background

The energy storage device generally includes a battery module (or battery cluster) formed by connecting a certain number of battery cells in series or in parallel, and a battery system formed by connecting a plurality of battery modules in series.

In the related art, the battery management system BMS may detect whether disconnection occurs in each cluster-level circuit through each of the battery cluster-level input circuits inside the high voltage box. However, the above detection method cannot accurately locate the position where the disconnection occurs, and cannot detect the total positive and negative connection reliability of the output end of the battery module, which results in low failure detection efficiency and accuracy of the battery module and low after-sales maintenance efficiency.

It should be noted that the information disclosed in the above background section is only for enhancing understanding of the background of the present disclosure and thus may include information that does not constitute prior art known to those of ordinary skill in the art.

Disclosure of Invention

The disclosure provides a battery module fault early warning method, device, equipment and storage medium, which at least overcome the problems of low battery module fault detection efficiency and low accuracy in the related art to a certain extent.

Other features and advantages of the present disclosure will be apparent from the following detailed description, or may be learned in part by the practice of the disclosure.

According to one aspect of the present disclosure, there is provided a battery module failure early warning method including: acquiring performance parameters of total positive and negative output ends of a battery module, wherein the performance parameters comprise at least one of voltage values of total positive output ends and total negative output ends of the battery module and temperature values of total positive output ends and total negative output ends of the battery module; if the performance parameters of the total positive and negative output ends of the battery module meet preset fault conditions, determining that the battery module has faults, and obtaining fault information of the battery module; and sending the fault information of the battery module to user equipment so as to perform fault early warning.

In one embodiment of the disclosure, when the performance parameters of the battery module total positive and negative output terminals include temperature values of the battery module total positive output terminal and the battery module total negative output terminal, the preset fault condition includes a preset temperature range; and if the performance parameters of the total positive and negative output ends of the battery module meet the preset fault conditions, determining that the battery module has faults, including: and if the temperature value of the total positive output end and/or the total negative output end of the battery module is within the preset temperature range, determining that the battery module has faults.

In one embodiment of the present disclosure, the preset fault conditions include a plurality of preset temperature ranges, the fault information of the battery module includes a fault level, and one preset temperature range corresponds to one fault level.

In one embodiment of the present disclosure, the method further comprises: and determining a target processing measure corresponding to the fault level of the battery module according to a preset measure corresponding relation, and executing the target processing measure, wherein the preset measure corresponding relation is used for representing the corresponding relation between the fault level of the battery module and the processing measure.

In one embodiment of the disclosure, the preset temperature range includes a first temperature range, and the fault level of the battery module is a first-level fault; when the performance parameters of the total positive and negative output ends of the battery module are in the first temperature range, the executing the target processing measure includes: the power of the battery module is configured to be a first preset power, and the first preset power is smaller than the rated power of the battery module.

In one embodiment of the disclosure, the preset temperature range includes a second temperature range, the fault level of the battery module is a secondary fault, and a left end point of the second temperature range is greater than or equal to a right end point of the first temperature range; when the performance parameters of the total positive and negative output ends of the battery module are in the second temperature range, the executing the target processing measure includes: and configuring the power of the battery module as a second preset power, wherein the second preset power is smaller than the first preset power.

In one embodiment of the disclosure, the preset temperature range includes a third temperature range, the fault level of the battery module is a three-level fault, and a left end point of the third temperature range is greater than or equal to a right end point of the second temperature range; when the performance parameters of the total positive and negative output ends of the battery module are in the third temperature range, the executing the target processing measure includes: and cutting off a main relay in the battery cluster high-voltage box corresponding to the battery module.

In one embodiment of the present disclosure, the fault information of the battery module includes at least one of a battery module identification, a fault output identification, a fault type, and a fault level.

In one embodiment of the present disclosure, when the performance parameter includes voltage values of the total positive output terminal and the total negative output terminal of the battery module, the preset fault condition includes a first preset voltage threshold; if the performance parameters of the total positive and negative output ends of the battery module meet a preset fault condition, determining that the battery module has a fault, and obtaining fault information of the battery module, wherein the fault information comprises: determining the voltage drop of the output end of the battery module according to the voltage values of the total positive output end and the total negative output end of the battery module; and if the voltage drop of the output end of the battery module is smaller than the first preset voltage threshold, judging that a loop where the battery module is located has faults.

In one embodiment of the present disclosure, the preset fault condition further comprises a second preset voltage threshold; wherein, the determining that the circuit where the battery module is located has a fault includes: acquiring a total voltage value of a voltage sampling point in a battery cluster high-voltage box corresponding to the battery module; and if the total voltage value of the voltage sampling points in the battery cluster high-voltage box is smaller than the second preset voltage threshold value, judging that the battery cluster high-voltage box is in a circuit breaking state.

In one embodiment of the present disclosure, the method further comprises: and if the total voltage value of the voltage sampling points in the high-voltage battery pack is equal to the second preset voltage threshold, determining that the inside of the battery module is broken.

In one embodiment of the present disclosure, the fault information of the battery module includes at least one of information of a battery module identification, a fault output terminal identification, a fault type, a fault level, and a voltage sampling point.

According to another aspect of the present disclosure, there is provided a battery module failure warning apparatus including: the parameter acquisition module is used for acquiring performance parameters of the total positive and negative output ends of the battery module, wherein the performance parameters comprise at least one of voltage values of the total positive output ends and the total negative output ends of the battery module and temperature values of the total positive output ends and the total negative output ends of the battery module; the fault determining module is used for determining that the battery module has a fault if the performance parameters of the total positive and negative output ends of the battery module meet preset fault conditions, so as to obtain fault information of the battery module; and the early warning generation module is used for sending the fault information of the battery module to the user equipment so as to perform fault early warning.

According to another aspect of the present disclosure, there is also provided an electronic device including: a processor; and a memory for storing executable instructions of the processor; wherein the processor is configured to execute any one of the above battery module failure warning methods via execution of the executable instructions.

According to another aspect of the present disclosure, there is also provided a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the battery module failure warning method of any one of the above.

According to another aspect of the present disclosure, there is also provided a computer program product including a computer program which, when executed by a processor, implements the battery module failure warning method of any one of the above.

In the embodiment of the disclosure, performance parameters of the total positive and negative output ends of the battery module are obtained, wherein the performance parameters comprise at least one of voltage values of the total positive output ends and the total negative output ends of the battery module and temperature values of the total positive output ends and the total negative output ends of the battery module; if the performance parameters of the total positive and negative output ends of the battery module meet the preset fault conditions, determining that the battery module has faults, and obtaining fault information of the battery module; and sending fault information of the battery module to the user equipment. According to the method, the performance parameters of the total positive and negative output ends of the battery module are collected, on one hand, whether the temperature of each PACK total positive and negative output end is abnormally increased or not is detected, so that whether the connection of each PACK total positive and negative output end is reliable or not when the system operates is judged, the operation safety of the system is improved, and the after-sale maintenance efficiency is improved; on the other hand, through increasing the voltage detection of the total positive and negative output ends of PACK, the battery module with short circuit fault can be positioned fast, so that maintenance personnel can be informed in time, and the maintenance efficiency is improved.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure. It will be apparent to those of ordinary skill in the art that the drawings in the following description are merely examples of the disclosure and that other drawings may be derived from them without undue effort.

Fig. 1 illustrates a schematic diagram of an energy storage system in an embodiment of the present disclosure.

Fig. 2 shows a flowchart of a battery module failure early warning method in an embodiment of the disclosure.

Fig. 3 is a flowchart illustrating another battery module failure warning method according to an embodiment of the present disclosure.

Fig. 4 is a flowchart illustrating a fault early warning method of a battery module according to another embodiment of the present disclosure.

Fig. 5 is a flowchart illustrating a fault early warning method of a battery module according to still another embodiment of the present disclosure.

Fig. 6 is a flowchart illustrating a fault early warning method of a battery module according to still another embodiment of the present disclosure.

Fig. 7 is a schematic diagram illustrating a structure of a battery module according to a liquid cooling method in an embodiment of the present disclosure.

Fig. 8 is a schematic view illustrating a structure of a battery module of an air cooling mode in an embodiment of the present disclosure.

Fig. 9 is a flowchart illustrating an example of a battery module failure warning method according to an embodiment of the disclosure.

Fig. 10 shows a second flowchart of an example of a battery module failure warning method in an embodiment of the disclosure.

Fig. 11 is a schematic diagram of a battery module failure warning device according to an embodiment of the disclosure.

Fig. 12 shows a block diagram of an electronic device in an embodiment of the disclosure.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments may be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

Furthermore, the drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus a repetitive description thereof will be omitted. Some of the block diagrams shown in the figures are functional entities and do not necessarily correspond to physically or logically separate entities. These functional entities may be implemented in software or in one or more hardware modules or integrated circuits or in different networks and/or processor devices and/or microcontroller devices.

Because of the strong timeliness and space properties of energy required by people, in order to reasonably utilize the energy and improve the utilization rate of the energy, one energy form needs to be stored by one medium or equipment and then converted into another energy form, and the energy is released in a specific energy form based on future application. At present, the main way of generating green electric energy is to develop green energy sources such as photovoltaic, wind power and the like to replace fossil energy sources.

At present, the generation of green electric energy generally depends on photovoltaic, wind power, water potential and the like, but wind energy, solar energy and the like generally have the problems of strong intermittence and large fluctuation, which can cause unstable power grid, insufficient peak electricity consumption, too much electricity consumption and unstable voltage can cause damage to the electric power, so that the problem of 'wind abandoning and light abandoning' possibly occurs due to insufficient electricity consumption requirement or insufficient power grid acceptance, and the problem needs to be solved by relying on energy storage. The energy is converted into other forms of energy through physical or chemical means and is stored, the energy is converted into electric energy when needed and released, in short, the energy storage is similar to a large-scale 'charge pal', the electric energy is stored when the photovoltaic and wind energy are sufficient, and the stored electric power is released when needed.

Taking electrochemical energy storage as an example, the present disclosure provides an energy storage device, in which a group of chemical batteries are disposed, chemical elements in the batteries are mainly utilized as energy storage media, and a charging and discharging process is accompanied with chemical reaction or change of the energy storage media, which simply means that electric energy generated by wind energy and solar energy is stored in the chemical batteries, and when the use of external electric energy reaches a peak, the stored electric quantity is released for use, or is transferred to a place where the electric quantity is short for reuse.

The present energy storage (i.e. energy storage) application scenario is comparatively extensive, including aspects such as power generation side energy storage, electric wire netting side energy storage and power consumption side energy storage, and the kind of corresponding energy storage equipment includes:

(1) The large energy storage power station applied to the wind power and photovoltaic power station side can assist renewable energy sources to generate electricity to meet grid-connected requirements, and meanwhile, the utilization rate of the renewable energy sources is improved; the energy storage power station is used as a high-quality active/reactive power regulating power supply in a power supply side, so that the load matching of electric energy in time and space is realized, the capacity of absorbing renewable energy sources is enhanced, the instantaneous power change is reduced, the impact on a power grid is reduced, the problem of generating and absorbing new energy sources is solved, and the energy storage power station has great significance in the aspects of standby of a power grid system, relieving peak load power supply pressure and peak regulation and frequency modulation;

(2) The energy storage container applied to the power grid side has the functions of mainly peak regulation, frequency modulation and power grid blocking and peak regulation relieving, and can realize peak clipping and valley filling of the power consumption load, namely the energy storage battery is charged when the power consumption load is low, and the stored electric quantity is released in the peak period of the power consumption load, so that the balance between power production and consumption, such as an energy storage power station system, is realized;

(3) The small energy storage cabinet applied to the electricity utilization side has the main functions of spontaneous electricity utilization, peak Gu Jiacha arbitrage, capacity cost management and power supply reliability improvement. According to the different application scenes, the electricity-side energy storage can be divided into an industrial and commercial energy storage cabinet, household energy storage equipment, an energy storage charging pile and the like, and is generally matched with the distributed photovoltaic. The energy storage can be used by industrial and commercial users for valley peak price difference arbitrage and capacity cost management. In the electric power market implementing peak-valley electricity price, the energy storage system is charged when the electricity price is low, and the energy storage system is discharged when the electricity price is high, so that peak-valley electricity price difference arbitrage is realized, and the electricity cost is reduced. In addition, the energy storage system is suitable for two industrial enterprises with electricity price, can store energy when electricity is used in low valley and discharge the energy when the electricity is used in peak load, so that peak power and the declared maximum demand are reduced, and the purpose of reducing the capacity electricity fee is achieved. The household photovoltaic distribution and storage can improve the spontaneous self-use level of the electric power. Due to high electricity prices and poor power supply stability, the photovoltaic installation requirements of users are pulled. Considering that the photovoltaic power generation is performed in daytime, and the load of a user is generally higher at night, the photovoltaic power can be better utilized through configuration of energy storage, the spontaneous self-use level is improved, and meanwhile the power consumption cost is reduced. In addition, the fields of communication base stations, data centers and the like need to be configured with energy storage for standby power.

Referring to fig. 1, fig. 1 is a schematic structural diagram of an energy storage system 100 according to an embodiment of the disclosure, and the embodiment of fig. 1 of the disclosure is illustrated by taking a power generation/distribution side shared energy storage scenario as an example, and the energy storage system 100 of the disclosure is not limited to the power generation/distribution side energy storage scenario.

The present disclosure provides an energy storage system 100, the energy storage system 100 comprising: the energy storage equipment 110, the high-voltage cable 120, the first electric energy conversion device 130 and the second electric energy conversion device 140, under the power generation condition, the first electric energy conversion device 130 and the second electric energy conversion device 140 are used for converting other forms of energy into electric energy, are connected with the high-voltage cable 120 and are supplied to the power distribution network power utilization side for use, when the power utilization load is low, the first electric energy conversion device 130 and the second electric energy conversion device 140 store multiple generated electric energy into the energy storage equipment 110 when the power generation is excessive, the wind abandoning rate and the light abandoning rate are reduced, and the problem of power generation and consumption of new energy is improved; when the power consumption load is high, the power grid gives an instruction, the electric quantity stored by the energy storage device 110 is cooperated with the high-voltage cable 120 to transmit electric energy to the power consumption side for use in a grid-connected mode, multiple services such as peak regulation, frequency modulation and standby are provided for the operation of the power grid, the peak regulation effect of the power grid is fully exerted, peak clipping and valley filling of the power grid are promoted, and the power supply pressure of the power grid is relieved.

Alternatively, the first electric energy conversion device 130 and the second electric energy conversion device 140 may convert at least one of solar energy, optical energy, wind energy, thermal energy, tidal energy, biomass energy, mechanical energy, and the like into electric energy.

The number of the energy storage devices 110 may be plural, and the plurality of energy storage devices 110 may be connected in series or parallel, and the plurality of energy storage devices 110 may be supported by a separator (not shown) and electrically connected. In the present embodiment, "a plurality of" means two or more. The energy storage device 110 may be further provided with an energy storage box outside for accommodating the energy storage device 110.

Alternatively, the energy storage device 110 may include, but is not limited to, a battery cell, a battery module, a battery pack, a battery system, and the like. The practical application form of the energy storage device 110 provided in the embodiments of the present disclosure may be, but not limited to, the listed products, and may also be other application forms, and the embodiments of the present disclosure do not strictly limit the application form of the energy storage device 110. The embodiments of the present disclosure will be described with reference to the energy storage device 110 being a multi-cell battery. When the energy storage device 110 is a unit cell, the energy storage device 110 may be at least one of a cylindrical cell, a prismatic cell, and the like.

In the related art, for a battery energy storage system, a battery module (PACK) is designed mainly by adopting air cooling and liquid cooling modes. In the aspect of fusing design, the air-cooled battery cluster fuses are respectively arranged in the cluster-level PACK and the high-voltage box, and the liquid-cooled battery cluster fuses are arranged in each PACK and the high-voltage box. When the fuses inside the clusters or the PACK are blown, the BMS control strategy judges whether the battery cluster is broken or not by detecting the total positive voltage value and the negative voltage value inside each cluster-level high-voltage box. The high-voltage connector of the liquid cooling PACK is connected with the high-voltage connector of the total positive and negative output of the PACK by adopting a quick inserting scheme, the air cooling high-voltage connector is connected by adopting a bolt locking mode, and the reliability of the connection of the high-voltage total positive and negative output poles is detected during product offline detection.

BMS in the related art detects and only can detect whether each cluster level return circuit takes place to break through each cluster level input return circuit inside the high-voltage box, and the concrete position of breaking, if break specifically takes place at which PACK, leads to maintenance efficiency lower.

In addition, the total positive and negative output of the PACK is detected offline through products, the total positive and negative connection reliability of the PACK cannot be detected in real time, and in the installation and maintenance process, the operation frequency of the total positive and negative connector positions is higher than that of other positions, when the total positive and negative connection points of the PACK are loosened in the client installation and maintenance process and the long-term operation process, abnormal heating of the connection points is caused, the ablation risk of melting through plastic parts of the connectors possibly occurs, the insulation performance of the system is reduced, and the normal operation of the system is affected.

In the present disclosure, the battery management system is divided into three levels: a PACK slave Battery management system (Battery MANAGEMENT SYSTEM, BMS, MBMU for short), a cluster-level master control BMS (CBMU for short) and a system master control BMS (SBMU for short), wherein MBMU of each PACK can detect total positive and negative voltage information, temperature information and the like of an output electrode position and send the total positive and negative voltage information and the temperature information to CBMU; CBMU can judge whether the total voltage information and the temperature information of each PACK are abnormal or the temperature exceeds the standard, and the like, when the voltage is abnormal or the temperature exceeds the standard, fault information can be obtained, and the fault information is uploaded to the SBMU; the SBMU can upload the received fault information to the user equipment, so that background detection personnel are reminded to carry out overhaul and maintenance.

In order to at least partially solve the above-mentioned problems, the present disclosure obtains performance parameters of the total positive and negative output terminals of the battery module, where the performance parameters include at least one of voltage values of the total positive and negative output terminals of the battery module, and temperature values of the total positive and negative output terminals of the battery module; if the performance parameters of the total positive and negative output ends of the battery module meet the preset fault conditions, determining that the battery module has faults, and obtaining fault information of the battery module; the fault information of the battery module is sent to the user equipment, and the performance parameters of the total positive and negative output ends of the battery module are collected, so that on one hand, whether the connection of the total positive and negative output ends of each PACK is reliable when the system operates is judged by detecting whether the temperature of the total positive and negative output ends of each PACK is abnormally increased, the operation safety of the system is improved, and the after-sale maintenance efficiency is improved; on the other hand, through increasing the voltage detection of the total positive and negative output ends of PACK, the battery module with short circuit fault can be positioned fast, so that maintenance personnel can be informed in time, and the maintenance efficiency is improved.

Under the above system architecture, the embodiment of the disclosure provides a method for early warning of a fault of a battery module, which may be executed by any electronic device having a computing processing capability, for example, a battery management unit, a battery cluster control management unit, or a stack level management unit in the disclosure.

Fig. 2 shows a flowchart of a battery module failure early warning method in an embodiment of the present disclosure, as shown in fig. 2, where the method for battery module failure early warning provided in the embodiment of the present disclosure may be applied to CBMU, and includes the following steps:

s202, obtaining performance parameters of the total positive and negative output ends of the battery module, wherein the performance parameters comprise at least one of voltage values of the total positive output ends and the total negative output ends of the battery module and temperature values of the total positive output ends and the total negative output ends of the battery module.

In one embodiment, the performance parameters of the total positive and negative output ends of the battery module can be temperature values detected by a temperature sensor or voltage values measured by a voltage acquisition unit, and the performance change of the total positive and negative output ends of the battery module can be detected by the performance parameters. It should be noted that, the performance parameter may also be selected from other parameters that can reflect the performance change of the total positive and negative output terminals of the battery module, such as resistance, current, and the like.

A voltage sampling point and/or a temperature sampling point can be arranged on the positive electrode copper bar connected with the total positive output end, a voltage acquisition unit is arranged at the voltage sampling point, and a temperature sensor is arranged at the temperature sampling point; the negative electrode copper bar connected with the total negative output end can be provided with a voltage sampling point and/or a temperature sampling point, the voltage sampling point is provided with a voltage acquisition unit, and the temperature sampling point is provided with a temperature sensor. It should be noted that the positions of the voltage sampling point and the temperature sampling point on the copper bar may be determined according to actual situations, and the disclosure is not limited specifically.

The voltage acquisition unit and the temperature sensor are electrically connected with MBMU, so that the performance parameters of the total positive and negative output ends of the battery module detected by MBMU are sent to CBMU.

And S204, if the performance parameters of the total positive and negative output ends of the battery module meet the preset fault conditions, determining that the battery module has faults, and obtaining fault information of the battery module.

In one embodiment, the preset fault condition may be preset in CBMU, and the preset fault condition may be used as a criterion for determining whether the connection between the positive and negative output ends of the battery module is abnormal.

For the mode that whether the PACK is abnormal or not is detected through the voltage value, the preset fault condition can be a first preset voltage threshold value of the total positive and negative output ends of the PACK, the first preset voltage threshold value is a voltage value output by the PACK during normal operation, when the voltage drop of the total positive and negative output ends of the battery module is smaller than the first preset voltage threshold value, the internal broken circuit of the PACK can be judged, the total voltage of the PACK cannot be detected by the voltage sampling points on the copper bars, and the internal broken circuit of the current PACK in series connection with the high-voltage loop can be judged.

For the mode of detecting whether the PACK has abnormality through the temperature value, the preset fault condition may include a preset temperature range or a preset temperature value, and when the temperature value of the total positive and negative output end of the PACK is in the preset temperature range or the temperature value of the total positive and negative output end of the PACK is greater than the preset temperature value, determining that the internal loop of the PACK has a fault.

In one embodiment, MBMU collects the performance parameters of the output end of the battery module according to a preset sampling frequency, and the sampling frequency may be determined according to practical situations, for example, 30Hz, that is, 30 performance parameters are collected per second.

The performance parameters of the total positive and negative output ends of the battery module meet the preset fault conditions within a period of time, for example, within 1 minute; or when the performance parameters of the total positive and negative output ends of the battery module meet the preset fault conditions during continuous and repeated sampling, determining that the battery module has faults.

It should be noted that, the first preset voltage threshold, the end point value of the preset temperature range, the preset temperature value, and the like may be determined according to actual situations, and the disclosure is not limited specifically.

The fault information of the battery module is used for representing the accurate position of the fault, such as the fault battery module, an abnormal output end of the battery module, an abnormal sampling point inside the battery module, fault related information and the like.

S206, fault information of the battery module is sent to the user equipment so as to perform fault early warning.

In one embodiment, after the CBMU obtains the fault information of the battery module, the fault information may be uploaded to the SBMU, the SBMU sends the fault information of the battery module to the user device, the user device may be a device used by an maintainer or the like, the user device may be a background device, and the user device may be various electronic devices with a display function, including but not limited to a smart phone, a tablet computer, a display screen, a desktop computer, and the like.

The clients of applications that can be installed on the user device are the same or clients of the same type of application based on different operating systems. The specific form of the application client may also be different based on the different terminal platforms, for example, the application client may be a mobile phone client, a PC client, etc.

The user equipment can display the received fault information of the battery module, so that background monitoring personnel are reminded to carry out overhauling and maintenance and the like.

In the embodiment of the disclosure, performance parameters of the total positive and negative output ends of the battery module are obtained, wherein the performance parameters comprise at least one of voltage values of the total positive output ends and the total negative output ends of the battery module and temperature values of the total positive output ends and the total negative output ends of the battery module; if the performance parameters of the total positive and negative output ends of the battery module meet the preset fault conditions, determining that the battery module has faults, and obtaining fault information of the battery module; the fault information of the battery module is sent to the user equipment, and the performance parameters of the total positive and negative output ends of the battery module are collected, so that on one hand, whether the connection of the total positive and negative output ends of each PACK is reliable when the system operates is judged by detecting whether the temperature of the total positive and negative output ends of each PACK is abnormally increased, the operation safety of the system is improved, and the after-sale maintenance efficiency is improved; on the other hand, through increasing the voltage detection of the total positive and negative output ends of PACK, the battery module with short circuit fault can be positioned fast, so that maintenance personnel can be informed in time, and the maintenance efficiency is improved.

Fig. 3 is a flowchart illustrating another battery module failure warning method according to an embodiment of the present disclosure. Based on the embodiment of fig. 2, S204 is refined to S2042 to define a situation that a circuit where the battery module is located is determined to have a fault by the temperature values of the total positive and negative output terminals and the preset temperature range, where the preset fault condition includes the preset temperature range when the performance parameters of the total positive and negative output terminals of the battery module include the temperature values of the total positive output terminal and the total negative output terminal of the battery module. As shown in fig. 3, in one embodiment, the battery module failure warning method of the embodiment of the present disclosure includes S202, S2042, and S206. The method comprises the following steps:

s2042, if the temperature value of the total positive output end and/or the total negative output end of the battery module is within a preset temperature range, determining that the battery module has faults.

It should be noted that, the implementation manners of S202 and S206 in this embodiment are the same as those of S202 and S206 in the foregoing embodiment, and will not be repeated here.

In one embodiment, the preset temperature range may be represented by a numerical interval, for example, (A1, A2), where the left end point A1 of the numerical interval may be the highest temperature value at which an abnormality occurs in the total positive and negative output terminals of the battery module. It should be noted that the end values A1 and A2 of the preset temperature range may be determined according to practical situations, for example, 80 ℃, which is not particularly limited in the present disclosure.

For example, when the temperature value of the total positive output end and/or the total negative output end of the battery module is less than or equal to the left end point of the numerical interval, it indicates that the battery module is operating normally without performing other processing.

When the temperature value of the total positive output end and/or the total negative output end of the battery module is greater than the left end point of the numerical value interval or the temperature value of the total positive output end and/or the total negative output end of the battery module is in the preset temperature range, the fault of the battery module is indicated, and at the moment, information such as the identification of the battery module can be recorded to remind a background monitoring staff of timely paying attention.

In one embodiment, the preset fault condition includes a plurality of preset temperature ranges, the fault information of the battery module includes a fault level, and one preset temperature range corresponds to one fault level. The above-mentioned a plurality of temperature ranges that predetermine can be a plurality of temperature ranges that have the temperature gradient, and when the temperature value of battery module total positive output end and/or total negative output end was in different temperature ranges that predetermine, the trouble that the battery module exists produced the influence different to the system, according to influence degree difference, divides the trouble grade of battery module, and wherein, the higher the trouble grade, the greater the harm degree, the lower the trouble grade, the harm degree is less. Therefore, different treatment strategies can be adopted for different levels of faults, so that the problems that the contact resistance is increased and obvious temperature rise change is caused due to loose connection of the positive and negative connection sections of the PACK or foreign matters on the connection surface can be timely treated.

For example, the preset fault condition may divide the above-mentioned numerical interval into a plurality of subintervals, for example, (A1, A2) into three subintervals, respectively, (A1, A3), [ A3, A4), [ A4, A2), the subintervals (A1, A3) correspond to the primary fault, [ A3, A4) correspond to the secondary fault, [ A4, A2) correspond to the tertiary fault.

In the embodiment of the disclosure, through dividing different preset temperature ranges, one preset temperature range corresponds to one fault level, so that background monitoring personnel are timely reminded to process according to the influence degree of faults, and the safety and stability of the system are guaranteed.

Fig. 4 is a flowchart illustrating a method for early warning of a failure of a battery module in one embodiment of the present disclosure. S208 is added on the basis of the embodiment of fig. 3 to define the fault handling manner. As shown in fig. 4, in an embodiment of the present disclosure, the method includes S202, S2042, S206 to S208, wherein:

S208, determining a target processing measure corresponding to the fault level of the battery module according to a preset measure corresponding relation, and executing the target processing measure, wherein the preset measure corresponding relation is used for representing the corresponding relation between the fault level of the battery module and the processing measure.

It should be noted that, the specific implementation manners of S202, S2042, and S206 in the present embodiment are similar to the specific implementation manners of S202, S2042, and S206 in the foregoing embodiment, and are not repeated here.

The preset measure corresponding relation can be pre-configured in CMBU, and the preset measure corresponding relation is used for recording the corresponding relation between the fault grade of the battery module and the processing measure, and corresponds to the fault grade, and the emergency degree of the processing measure is gradually increased along with the gradual increase of the fault grade.

When CMBU determines that the battery module has a fault, the fault level can be determined according to the preset temperature range where the temperature value of the total positive output end and/or the total negative output end of the battery module is located, the target processing measure corresponding to the fault level is determined according to the corresponding relation of the preset measures, and the fault of the battery module is eliminated by executing the target processing measure, so that the running safety of the battery module is realized.

The corresponding relation of the preset measures can be expressed in the form of a corresponding relation table, a chart and the like, so that CMBU can quickly determine the target processing measure through a table look-up mode.

In one embodiment, a preset measure correspondence may be constructed in advance, and a relationship between the failure level of the battery module and the processing measure may be established.

According to different fault grades, different treatment measures can be set, for example, measures for limiting power or cutting off a high-voltage loop can be taken, so that the battery module is reasonably used, and the utilization rate and safety of the battery module are improved.

It should be noted that the execution sequence of S206 and S208 may be determined according to the actual situation.

In the embodiment of the disclosure, the target treatment measures corresponding to the fault level of the battery module are rapidly and conveniently determined through the preset measure corresponding relation, so that the fault treatment efficiency of the battery module is improved, and the operation safety of the battery system is ensured.

In one embodiment, the preset temperature range includes a first temperature range, and the failure level of the battery module is a first-level failure; when the performance parameters of the total positive and negative output terminals of the battery module are in the first temperature range, the executing the target processing measure in S208 includes: the power of the battery module is configured to be a first preset power, and the first preset power is smaller than the rated power of the battery module.

For example, the first temperature range may be [80,90 ], i.e., the temperature value of the total positive output terminal and/or the temperature value of the total negative output terminal of the battery module is between 80 ℃ and 90 ℃, with 80 ℃ being the lowest temperature value for determining that the battery module has a fault.

When the temperature value of the total positive output end and/or the temperature value of the total negative output end of the battery module are in the first temperature range, a power-limiting treatment measure can be adopted, so that the further temperature rise of the battery module is effectively prevented.

The rated power of the battery module can be the power provided by the battery module when the battery module works normally. When the temperature value of the total positive output end and/or the temperature value of the total negative output end of the battery module are in the first temperature range, the first preset power may be configured as 50% of rated power. It should be noted that the magnitude of the first preset power may be determined according to the actual situation.

In this disclosed embodiment, when the trouble level of battery module is the one-level trouble, demonstrate that the battery module is rising temperature, and the temperature rise scope only appears the influence to a certain extent to the battery module, through the processing measure of limit power, can prevent further temperature rise of battery module, and the first security that presets the power and be greater than 0 can ensure the power consumption load prevents the adverse effect that sudden outage produced the power consumption load.

In one embodiment, the preset temperature range includes a second temperature range, the fault level of the battery module is a secondary fault, and a left end point of the second temperature range is greater than or equal to a right end point of the first temperature range; when the performance parameters of the total positive and negative output ends of the battery module are in the second temperature range, executing target treatment measures, including: the power of the battery module is configured to be second preset power, wherein the second preset power is smaller than the first preset power.

When the temperature value corresponding to the second temperature range is higher than the temperature value corresponding to the first temperature range, the temperature value of the total positive output end and/or the temperature value of the total negative output end of the battery module are/is higher than the temperature value corresponding to the first temperature range, and the failure level of the battery module is further increased to be a secondary failure at the moment, and target treatment measures corresponding to the secondary failure are determined according to the preset measure corresponding relation.

For the secondary fault, the target processing measure can be a power limiting measure, and compared with the primary fault, the power limiting degree of the processing measure corresponding to the secondary fault is further improved, so that the second preset power is smaller than the first preset power.

For example, the second temperature range is [90,100 ], and when the temperature value of the total positive output terminal and/or the total negative output terminal of the battery module is in the second temperature range, the power of the battery module may be configured to be 0.

It should be noted that, the first preset power, the second preset power and the temperature range may be determined according to actual situations, and the right end point of the first temperature range and the left end point of the second temperature range may be the same or different, which is not specifically limited in the disclosure.

In the embodiment of the disclosure, when the failure level of the battery module is a secondary failure, the battery module is shown to have obvious temperature rise, the temperature rise range has a great influence on the battery module, the situation that the connector plastic part is melted and ablated due to further temperature rise of the battery module can be prevented through the processing measure of limited power, and the normal operation of the system is ensured.

In one embodiment, the preset temperature range includes a third temperature range, the fault level of the battery module is a three-level fault, and the left end point of the third temperature range is greater than or equal to the right end point of the second temperature range; when the performance parameters of the total positive and negative output terminals of the battery module are in the third temperature range, the executing the target processing measure in S208 includes: and cutting off the main relay in the battery cluster high-voltage box corresponding to the battery module.

The temperature value corresponding to the third temperature range is further increased than the temperature value corresponding to the second temperature range, and at the moment, the fault level of the battery module corresponding to the third temperature range is three-level fault.

For a three-stage fault, a measure of cutting off the high-voltage circuit can be adopted.

For example, the third temperature range may be [100, 150), when the temperature value of the total positive output end and/or the temperature value of the total negative output end of the battery module are in the third temperature range, it is determined that the failure level of the battery module is three-level failure, and at this time, the main relay in the battery cluster high-voltage box corresponding to the battery module may be cut off, so that the battery module with failure cuts out the loop, thereby effectively avoiding the problem that the insulation performance of the system is reduced due to too fast temperature rise of the battery module, and ensuring the normal operation of the system.

In one embodiment, for the case where the battery module malfunctions as determined by means of temperature, the malfunction information of the battery module includes at least one of a battery module identification, a malfunction output terminal identification, a malfunction type, and a malfunction level.

The battery module identifier is used as a unique identity identifier of the battery module, and the battery module identifier can be represented by numbers, symbols, letters, characters and the like, for example, PACKi ×j can be used for battery modules distributed in an m×n array, wherein i and j respectively represent a row number and a column number of the battery modules in the array. The fault output end identifier is used for representing the output end with fault, and can be a total positive output end and/or a total negative output end, and can be represented by minus. The fault type may be a temperature anomaly; the fault level is determined according to the temperature range of the temperature value of the total positive output end and/or the total negative output end of the battery module, for example, the fault level can be a primary fault, a secondary fault and a tertiary fault … …, and the fault level can be determined according to actual conditions.

The fault information of the battery module is limited, so that more accurate fault positioning is provided for background monitoring staff, and the fault processing efficiency is improved.

Fig. 5 is a flowchart illustrating a fault early warning method of a battery module according to still another embodiment of the present disclosure. Based on the embodiment of fig. 2, S204 is further refined to S2044 to S2046, and the situation that whether the battery module has a fault is defined by the voltage information of the output end of the battery module is determined. At this time, when the performance parameter includes voltage values of the total positive output terminal and the total negative output terminal of the battery module, the preset fault condition includes a first preset voltage threshold. As shown in fig. 5, in one embodiment, the battery module failure warning method provided in the embodiment of the disclosure includes S202, S2044 to S2046, and S206. The method comprises the following steps:

S2044, determining the voltage drop of the output end of the battery module according to the voltage values of the total positive output end and the total negative output end of the battery module;

S2046, if the voltage drop at the output end of the battery module is smaller than the first preset voltage threshold, judging that the loop where the battery module is located has faults.

In one embodiment, the voltage drop at the output terminal of the battery module may be obtained by calculating the difference between the voltage value at the total positive output terminal and the voltage value at the total negative output terminal of the battery module. In the working process of the battery module, rated power, a first preset voltage threshold value and the like can be provided for the electric load, the first preset voltage threshold value is a voltage value which needs to be provided for the electric load when the battery module works normally, and the target voltage value can be determined according to actual needs.

The first preset voltage threshold may be preconfigured in CMBU, and when the voltage drop at the output end of the battery module is calculated to be smaller than the first preset voltage threshold, it indicates that the battery module cannot provide a required voltage value for the electric load, and it is determined that the internal series circuit of the battery module may be broken.

In one case, when the positive output terminal and the negative output terminal of the battery module cannot detect the PACK voltage value, it may also be determined that a fault exists in the circuit where the battery module is located.

In the embodiment of the disclosure, the voltage drop of the output end of the battery module is calculated through the voltage values of the total positive and negative output ends of the battery module, the relation between the voltage drop threshold and the first preset voltage threshold is compared, and whether the loop where the battery module is located has faults or not is judged according to the comparison result, so that early warning and processing of the faults of the broken circuit and the total positive and negative output connection points inside the PACK can be realized by adding the voltage detection channel, and the safety and reliability of the battery system are improved.

Fig. 6 shows a flowchart of a battery module failure warning method in an embodiment of the disclosure. Based on the embodiment of fig. 5, S2046 is further refined to S2048 to locate a component with a fault inside the PACK, and the preset fault condition further includes a second preset voltage threshold; wherein, judge that the return circuit that the battery module is located has the trouble, include:

S2048, obtaining a total voltage value of a voltage sampling point in the battery cluster high-voltage box corresponding to the battery module; if the total voltage value of the voltage sampling points in the high-voltage battery pack is smaller than a second preset voltage threshold value, judging that a circuit breaker exists in the high-voltage battery pack.

Further, the step S2048 further includes: if the total voltage value of the voltage sampling points in the high-voltage box of the battery cluster is equal to a second preset voltage threshold value, determining that the inside of the battery module is broken.

A plurality of voltage sampling points can be arranged in the high-voltage box of the battery cluster, a second preset voltage threshold value corresponding to each voltage sampling point is set, when the total voltage value of one voltage sampling point is equal to the corresponding second preset voltage threshold value, the condition that the loop in the high-voltage box is abnormal is indicated, at the moment, the condition that the PACK fault is the fault at the total positive and negative connection point, namely, the internal of the battery module is broken, and the information of the battery module with the internal broken circuit can be uploaded to the SBMU.

When the total voltage value of the voltage acquisition point is smaller than a second preset voltage threshold value or the voltage value of the voltage acquisition point is abnormal, the circuit in the high-voltage box is indicated to be abnormal, and at the moment, the information of the battery module with the abnormal voltage acquisition point can be uploaded to the SBMU.

In one embodiment, the fault information of the battery module includes at least one of information of a battery module identification, a fault output identification, a fault type, a fault level, and a voltage sampling point. The battery module identifier may be the unique identity information of the battery module, which is the same as the implementation manner in the foregoing embodiment, and will not be described in detail. The fault output identification is used to characterize the output that has a fault, as in the previous embodiment. The fault type may be a voltage anomaly. The information of the voltage sampling points is used for representing the accurate position of the sampling points with abnormal voltage in the battery cluster, and for the voltage sampling points in the battery cluster, each voltage sampling point can be numbered in advance, and the voltage sampling points correspond to the battery module. Through limiting the fault information of the battery module, more accurate fault positioning is provided for background monitoring personnel, and the fault processing efficiency is improved.

It should be noted that, the mode of performing fault early warning in voltage detection and the mode of performing fault early warning in temperature detection in the present disclosure may be implemented separately or in combination, and the present disclosure is not limited specifically.

In order to enhance the understanding of the technical solutions of the present disclosure, the following detailed description is made with reference to fig. 7 to 10.

Fig. 7 is a schematic diagram illustrating a structure of a battery module according to a liquid cooling method in an embodiment of the present disclosure. As shown in fig. 7, in the liquid-cooled battery module, the battery module includes a plurality of battery cells, a total positive output end 710, a total negative output end 720, a total positive copper bar 730 and a total negative copper bar 740, wherein the total positive output end 710 is connected with the total positive copper bar 730, the total negative output end 720 is connected with the total negative copper bar 740, and the total positive copper bar 730 and the total negative copper bar 740 are respectively connected with the positive and negative electrodes of the plurality of battery cells after being connected in series-parallel.

A voltage acquisition point 750 and a temperature acquisition point 760 are arranged on the total positive copper bar 730; similarly, a voltage collection point 750 and a temperature collection point 760 are also provided on the total negative copper bar 740 to collect the voltage value and the temperature value of the total positive and negative output terminals of the battery module.

The voltage sampling point 750 and the temperature sampling point 760 are respectively and oppositely arranged on the total positive copper bar 730 or the total negative copper bar 740, and the adjacent side edges of the total positive copper bar 730 and the total negative copper bar 740 are respectively provided with different types of sampling points.

As shown in fig. 8, in the water-cooled battery module, the battery module includes a plurality of battery cells, a total positive output terminal 710', a total negative output terminal 720', a total positive copper bar 730 'and a total negative copper bar 740', wherein the total positive output terminal 710 'is connected with the total positive copper bar 730', the total negative output terminal 720 'is connected with the total negative copper bar 740', and the total positive copper bar 730 'and the total negative copper bar 740' are respectively connected with the positive and negative poles of the plurality of battery cells after being connected in series-parallel.

The total positive copper bar 730' is provided with a voltage acquisition point 750' and a temperature acquisition point 760'; similarly, the total negative copper bar 740' is also provided with a voltage collection point 750' and a temperature collection point 760' to collect the voltage value and the temperature value of the total positive and negative output ends of the battery module.

The voltage sampling point 750 'and the temperature sampling point 760' are respectively disposed on the total positive copper bar 730 'or the total negative copper bar 740' side by side, and are disposed on the adjacent sides of the total positive copper bar 730 'and the total negative copper bar 740'.

As shown in fig. 9, the method for early warning of a fault of a battery module provided by the present disclosure may be used to determine whether the battery module has a fault according to a temperature value of an output end of the battery module, where the method includes:

s902, detecting total positive and negative temperature information of an output end of each battery module by MBMU of each battery module;

s904, MBMU of each battery module sends detected total positive and negative temperature information of the output end of the battery module to CBMU;

S906, CBMU, judging whether the temperature value of the output end of each module of the cluster level reaches a fault threshold value, if so, executing S908; if not, then execution S912; it should be noted that, the fault threshold may be a preset temperature range in the foregoing embodiment;

For example, when the connection of the positive output end and the negative output end of the PACK is loose or the connection surface is obligated to cause the contact resistance to be increased, obvious temperature rise change occurs at the connection position, and the internal loop can be judged to be faulty through the abnormal temperature change. For example, three failure levels may be defined, and the primary failure threshold may be set to: the temperature is not less than 80 ℃, and the implementation treatment measures are as follows: limiting the power to 50%; the secondary failure threshold may be set to: the temperature is not less than 90 ℃, and the implementation treatment measures are as follows: limiting the power to 0; the three-level fault threshold may be set to: the temperature is not less than 100 ℃, and the implementation treatment measures are as follows: the main relay inside the cluster-level high-voltage box is turned off.

S980, CBMU are positioned to a battery module with abnormal temperature detection, processing is carried out according to the corresponding fault grade, and fault information is uploaded to the SBMU;

S910, the SBMU uploads the received fault information to the background, and reminds background detection personnel of the need of overhauling and maintenance;

s912, the system is normal and does not perform any processing.

As shown in fig. 10, the battery module fault early warning method provided by the present disclosure may be used to determine whether a battery module has a fault according to a voltage value of an output end of the battery module, where the method includes:

S1002, detecting total positive and negative voltage information of an output end of each battery module by MBMU of each battery module;

S1004, the MBMU of each battery module sends detected total positive and negative voltage information of the output end of the battery module to CBMU;

S1006, CBMU, judging whether the total pressure information of the output end of each module of the cluster level is abnormal, if not, executing the normal operation of the S1007 system without any treatment; if yes, then execute S1008;

S1008, CBMU judges whether the total pressure collection in the cluster-level high-pressure box is normal, if not, S1009 is executed; if yes, then execute S1010;

S1009, CBMU positions the module with abnormal voltage detection, and uploads the module information with circuit break to the SBMU, and goes to S1012;

S1010, CBMU, locating a module with abnormal voltage detection, and uploading module information of abnormal voltage acquisition points in the voltage high-voltage box to the SBMU;

S1012, the SBMU uploads the received fault information to the background, and reminds background monitoring personnel of the need of overhauling and maintaining.

In the method, the reliability of the PACK total positive and negative output connection point is improved by increasing the temperature detection of the PACK total positive and negative connection point, so that the safety of system operation is improved; the PACK position where circuit breaking occurs in the fault cluster can be rapidly identified by increasing the total voltage detection of the total positive and negative output ends of the PACK, so that the maintenance efficiency is improved.

Based on the same inventive concept, the embodiment of the disclosure also provides a battery module failure early warning device, as described in the following embodiment. Since the principle of solving the problem of the embodiment of the device is similar to that of the embodiment of the method, the implementation of the embodiment of the device can be referred to the implementation of the embodiment of the method, and the repetition is omitted.

Fig. 11 is a schematic diagram of a battery module failure warning device according to an embodiment of the disclosure, as shown in fig. 11, where the device includes:

The parameter obtaining module 1110 is configured to obtain a performance parameter of a total positive output end and a total negative output end of the battery module, where the performance parameter includes at least one of a voltage value of the total positive output end and the total negative output end of the battery module, and a temperature value of the total positive output end and the total negative output end of the battery module;

The fault determining module 1120 is configured to determine that a fault exists in the battery module if the performance parameters of the total positive and negative output ends of the battery module meet a preset fault condition, so as to obtain fault information of the battery module;

And the early warning generation module 1130 is configured to send fault information of the battery module to the user equipment, so as to perform fault early warning.

It should be noted that, the parameter obtaining module 1110, the fault determining module 1120, and the early warning generating module 1130 correspond to S202 to S206 in the method embodiment, and the foregoing modules are the same as examples and application scenarios implemented by the corresponding steps, but are not limited to those disclosed in the method embodiment. It should be noted that the modules described above may be implemented as part of an apparatus in a computer system, such as a set of computer-executable instructions.

In one embodiment, when the performance parameters of the total positive and negative outputs of the battery module include temperature values of the total positive and negative outputs of the battery module, the preset fault condition includes a preset temperature range; the fault determining module 1120 is configured to determine that a fault exists in the battery module if a temperature value of a total positive output end and/or a total negative output end of the battery module is within a preset temperature range.

It should be noted that the preset fault condition includes a plurality of preset temperature ranges, the fault information of the battery module includes a fault level, and one preset temperature range corresponds to one fault level.

In one embodiment, the device further includes a fault handling module, not shown in the drawings, configured to determine a target handling measure corresponding to the fault level of the battery module according to a preset measure correspondence, and execute the target handling measure, where the preset measure correspondence is used to characterize a correspondence between the fault level of the battery module and the handling measure.

In one embodiment, the preset temperature range includes a first temperature range, and the failure level of the battery module is a first-level failure; the fault processing module is used for configuring the power of the battery module to be a first preset power when the performance parameters of the total positive and negative output ends of the battery module are in a first temperature range, and the first preset power is smaller than the rated power of the battery module.

In one embodiment, the preset temperature range includes a second temperature range, the fault level of the battery module is a secondary fault, and the left end point of the second temperature range is greater than or equal to the right end point of the first temperature range; the fault processing module is used for configuring the power of the battery module to be second preset power when the performance parameters of the total positive and negative output ends of the battery module are in a second temperature range, wherein the second preset power is smaller than the first preset power.

In one embodiment, the preset temperature range includes a third temperature range, the fault level of the battery module is a three-level fault, and the left end point of the third temperature range is greater than or equal to the right end point of the second temperature range; the fault processing module is used for cutting off a main relay in the battery cluster high-voltage box corresponding to the battery module when the performance parameters of the total positive and negative output ends of the battery module are in a third temperature range.

It should be noted that the fault information of the battery module includes at least one of a battery module identifier, a fault output terminal identifier, a fault type, and a fault level.

In one embodiment, when the performance parameter includes voltage values of the total positive output and the total negative output of the battery module, the preset fault condition includes a first preset voltage threshold; the fault determining module 1120 is configured to determine a voltage drop at an output end of the battery module according to voltage values of a total positive output end and a total negative output end of the battery module; if the voltage drop of the output end of the battery module is smaller than a first preset voltage threshold value, determining that a loop where the battery module is located has faults.

In one embodiment, the preset fault condition further comprises a second preset voltage threshold; the fault determining module 1120 is configured to obtain a total voltage value of a voltage sampling point in the battery cluster high-voltage box corresponding to the battery module; if the total voltage value of the voltage sampling points in the high-voltage battery pack is smaller than a second preset voltage threshold value, judging that a circuit breaker exists in the high-voltage battery pack.

In one embodiment, the fault determining module 1120 is further configured to determine that a circuit break occurs inside the battery module if the total voltage value of the voltage sampling points in the high voltage box of the battery cluster is equal to the second preset voltage threshold.

It should be noted that the fault information of the battery module includes at least one of information of a battery module identifier, a fault output end identifier, a fault type, a fault level, and a voltage sampling point.

Those skilled in the art will appreciate that the various aspects of the present disclosure may be implemented as a system, method, or program product. Accordingly, various aspects of the disclosure may be embodied in the following forms, namely: an entirely hardware embodiment, an entirely software embodiment (including firmware, micro-code, etc.) or an embodiment combining hardware and software aspects may be referred to herein as a "circuit," module "or" system.

An electronic device 1200 according to such an embodiment of the present disclosure is described below with reference to fig. 12. The electronic device 1200 shown in fig. 12 is merely an example, and should not be construed as limiting the functionality and scope of use of the disclosed embodiments.

As shown in fig. 12, the electronic device 1200 is in the form of a general purpose computing device. Components of electronic device 1200 may include, but are not limited to: the at least one processing unit 1210, the at least one memory unit 1220, and a bus 1230 connecting the different system components (including the memory unit 1220 and the processing unit 1210).

Wherein the storage unit stores program code that is executable by the processing unit 1210 such that the processing unit 1210 performs steps according to various exemplary embodiments of the present disclosure described in the above-described "exemplary methods" section of the present specification. For example, the processing unit 1210 may perform the following steps of the method embodiment described above: acquiring performance parameters of the total positive and negative output ends of the battery module, wherein the performance parameters comprise at least one of voltage values of the total positive output ends and the total negative output ends of the battery module and temperature values of the total positive output ends and the total negative output ends of the battery module; if the performance parameters of the total positive and negative output ends of the battery module meet the preset fault conditions, determining that the battery module has faults, and obtaining fault information of the battery module; and sending fault information of the battery module to the user equipment so as to perform fault early warning.

The storage unit 1220 may include a readable medium in the form of a volatile storage unit, such as a Random Access Memory (RAM) 12201 and/or a cache memory 12202, and may further include a Read Only Memory (ROM) 12203.

Storage unit 1220 may also include a program/utility 12204 having a set (at least one) of program modules 12205, such program modules 12205 including, but not limited to: an operating system, one or more application programs, other program modules, and program data, each or some combination of which may include an implementation of a network environment.

Bus 1230 may be a local bus representing one or more of several types of bus structures including a memory unit bus or memory unit controller, a peripheral bus, an accelerated graphics port, a processing unit, or using any of a variety of bus architectures.

The electronic device 1200 may also communicate with one or more external devices 1240 (e.g., keyboard, pointing device, bluetooth device, etc.), one or more devices that enable a user to interact with the electronic device 1200, and/or any devices (e.g., routers, modems, etc.) that enable the electronic device 1200 to communicate with one or more other computing devices. Such communication may occur through an input/output (I/O) interface 1250. Also, the electronic device 1200 may communicate with one or more networks such as a Local Area Network (LAN), a Wide Area Network (WAN), and/or a public network such as the internet through the network adapter 1260. As shown, the network adapter 1260 communicates with other modules of the electronic device 1200 over bus 1230. It should be appreciated that although not shown, other hardware and/or software modules may be used in connection with electronic device 1200, including, but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, data backup storage systems, and the like.

From the above description of embodiments, those skilled in the art will readily appreciate that the example embodiments described herein may be implemented in software, or may be implemented in software in combination with the necessary hardware. Thus, the technical solution according to the embodiments of the present disclosure may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (may be a CD-ROM, a U-disk, a mobile hard disk, etc.) or on a network, including several instructions to cause a computing device (may be a personal computer, a server, a terminal device, or a network device, etc.) to perform the method according to the embodiments of the present disclosure.

In particular, according to embodiments of the present disclosure, the process described above with reference to the flowcharts may be implemented as a computer program product comprising: and the computer program realizes the battery module fault early warning method when being executed by the processor.

In an exemplary embodiment of the present disclosure, a computer-readable storage medium, which may be a readable signal medium or a readable storage medium, is also provided. In some possible implementations, aspects of the present disclosure may also be implemented in the form of a program product comprising program code for causing an electronic device to carry out the steps according to the various exemplary embodiments of the disclosure as described in the "exemplary methods" section of this specification, when the program product is run on the electronic device.

More specific examples of the computer readable storage medium in the present disclosure may include, but are not limited to: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

In this disclosure, a computer readable storage medium may include a data signal propagated in baseband or as part of a carrier wave, with readable program code embodied therein. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination of the foregoing. A readable signal medium may also be any readable medium that is not a readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.

Alternatively, the program code embodied on a computer readable storage medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.

In particular implementations, the program code for carrying out operations of the present disclosure may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, C++ or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computing device, partly on the user's device, as a stand-alone software package, partly on the user's computing device, partly on a remote computing device, or entirely on the remote computing device or server. In the case of remote computing devices, the remote computing device may be connected to the user computing device through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computing device (e.g., connected via the Internet using an Internet service provider).

It should be noted that although in the above detailed description several modules or units of a device for action execution are mentioned, such a division is not mandatory. Indeed, the features and functionality of two or more modules or units described above may be embodied in one module or unit in accordance with embodiments of the present disclosure. Conversely, the features and functions of one module or unit described above may be further divided into a plurality of modules or units to be embodied.

Furthermore, although the steps of the methods in the present disclosure are depicted in a particular order in the drawings, this does not require or imply that the steps must be performed in that particular order, or that all illustrated steps be performed, to achieve desirable results. Additionally or alternatively, certain steps may be omitted, multiple steps combined into one step to perform, and/or one step decomposed into multiple steps to perform, etc.

From the description of the above embodiments, those skilled in the art will readily appreciate that the example embodiments described herein may be implemented in software, or may be implemented in software in combination with the necessary hardware. Thus, the technical solution according to the embodiments of the present disclosure may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (may be a CD-ROM, a U-disk, a mobile hard disk, etc.) or on a network, including several instructions to cause a computing device (may be a personal computer, a server, a mobile terminal, or a network device, etc.) to perform the method according to the embodiments of the present disclosure.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This disclosure is intended to cover any adaptations, uses, or adaptations of the disclosure following the general principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

Claims

1. The battery module fault early warning method is characterized by comprising the following steps of:

acquiring performance parameters of total positive and negative output ends of a battery module, wherein the performance parameters comprise at least one of voltage values of total positive output ends and total negative output ends of the battery module and temperature values of total positive output ends and total negative output ends of the battery module;

if the performance parameters of the total positive and negative output ends of the battery module meet preset fault conditions, determining that the battery module has faults, and obtaining fault information of the battery module;

And sending the fault information of the battery module to user equipment so as to perform fault early warning.

2. The battery module failure warning method according to claim 1, wherein when the performance parameters of the total positive and negative output terminals of the battery module include temperature values of the total positive and negative output terminals of the battery module, the preset failure condition includes a preset temperature range;

And if the performance parameters of the total positive and negative output ends of the battery module meet the preset fault conditions, determining that the battery module has faults, including:

and if the temperature value of the total positive output end and/or the total negative output end of the battery module is within the preset temperature range, determining that the battery module has faults.

3. The battery module failure warning method according to claim 2, wherein the preset failure condition includes a plurality of preset temperature ranges, the failure information of the battery module includes failure levels, and one preset temperature range corresponds to one failure level.

4. The battery module failure warning method according to claim 3, characterized in that the method further comprises:

And determining a target processing measure corresponding to the fault level of the battery module according to a preset measure corresponding relation, and executing the target processing measure, wherein the preset measure corresponding relation is used for representing the corresponding relation between the fault level of the battery module and the processing measure.

5. The battery module failure warning method according to claim 4, wherein the preset temperature range includes a first temperature range, and the failure level of the battery module is a first-level failure; when the performance parameters of the total positive and negative output ends of the battery module are in the first temperature range, the executing the target processing measure includes:

The power of the battery module is configured to be a first preset power, and the first preset power is smaller than the rated power of the battery module.

6. The battery module failure warning method according to claim 5, wherein the preset temperature range includes a second temperature range, the failure level of the battery module is a secondary failure, and a left end point of the second temperature range is greater than or equal to a right end point of the first temperature range; when the performance parameters of the total positive and negative output ends of the battery module are in the second temperature range, the executing the target processing measure includes:

And configuring the power of the battery module as a second preset power, wherein the second preset power is smaller than the first preset power.

7. The battery module failure warning method according to claim 6, wherein the preset temperature range includes a third temperature range, the failure level of the battery module is a three-level failure, and a left end point of the third temperature range is greater than or equal to a right end point of the second temperature range;

when the performance parameters of the total positive and negative output ends of the battery module are in the third temperature range, the executing the target processing measure includes:

And cutting off a main relay in the battery cluster high-voltage box corresponding to the battery module.

8. The battery module failure warning method according to claim 2, wherein the failure information of the battery module includes at least one of a battery module identification, a failure output end identification, a failure type, and a failure level.

9. The battery module failure warning method according to any one of claims 1 to 8, wherein when the performance parameter includes voltage values of a total positive output terminal and a total negative output terminal of the battery module, the preset failure condition includes a first preset voltage threshold;

If the performance parameters of the total positive and negative output ends of the battery module meet a preset fault condition, determining that the battery module has a fault, and obtaining fault information of the battery module, wherein the fault information comprises:

Determining the voltage drop of the output end of the battery module according to the voltage values of the total positive output end and the total negative output end of the battery module;

and if the voltage drop of the output end of the battery module is smaller than the first preset voltage threshold, judging that a loop where the battery module is located has faults.

10. The battery module failure warning method according to claim 9, wherein the preset failure condition further includes a second preset voltage threshold;

Wherein, the determining that the circuit where the battery module is located has a fault includes:

Acquiring a total voltage value of a voltage sampling point in a battery cluster high-voltage box corresponding to the battery module;

and if the total voltage value of the voltage sampling points in the battery cluster high-voltage box is smaller than the second preset voltage threshold value, judging that the battery cluster high-voltage box is in a circuit breaking state.

11. The battery module failure warning method according to claim 10, characterized in that the method further comprises:

And if the total voltage value of the voltage sampling points in the high-voltage battery pack is equal to the second preset voltage threshold, determining that the inside of the battery module is broken.

12. The battery module failure warning method according to claim 9, wherein the failure information of the battery module includes at least one of battery module identification, failure output end identification, failure type, failure level, and information of a voltage sampling point.

13. The utility model provides a battery module trouble early warning device which characterized in that includes:

The parameter acquisition module is used for acquiring performance parameters of the total positive and negative output ends of the battery module, wherein the performance parameters comprise at least one of voltage values of the total positive output ends and the total negative output ends of the battery module and temperature values of the total positive output ends and the total negative output ends of the battery module;

the fault determining module is used for determining that the battery module has a fault if the performance parameters of the total positive and negative output ends of the battery module meet preset fault conditions, so as to obtain fault information of the battery module;

and the early warning generation module is used for sending the fault information of the battery module to the user equipment so as to perform fault early warning.

14. An electronic device, comprising:

A processor; and

A memory for storing executable instructions of the processor;

Wherein the processor is configured to perform the battery module failure warning method of any one of claims 1 to 12 via execution of the executable instructions.

15. A computer-readable storage medium, on which a computer program is stored, characterized in that the computer program, when executed by a processor, implements the battery module failure warning method according to any one of claims 1 to 12.