CN111525631A - Energy management method, device, electronic device and storage medium for lithium battery - Google Patents

Abstract

The invention discloses an energy management method and device of a lithium battery, electronic equipment and a storage medium, wherein the method comprises the following steps: acquiring the current charge quantity, the preset standard charge quantity and the current temperature of the lithium battery; determining a target charge capacity of the lithium battery according to the current charge capacity and the preset standard charge capacity; determining a target current of the battery according to the target charge amount and the current temperature; judging whether the current charge quantity is smaller than the first threshold value; if yes, charging the lithium battery according to the target current; according to the invention, the target current of the battery is determined according to the target charge capacity of the lithium battery, and the battery is charged or discharged by the current, so that the problem of overcharge or overdischarge of the lithium battery is avoided, the reliability of the system is improved, meanwhile, the charging voltage of the battery is limited, the service life of the battery is protected, and the service life of a power supply system of the whole vehicle is further prolonged.

Description

Energy management method, device, electronic device and storage medium for lithium battery

technical field

The present invention relates to the technical field of lithium battery charging, and in particular, to an energy management method, device, electronic device and storage medium of a lithium battery.

Background technique

With the development and publicity of the intelligent driving system and the increase of users' expectations for this system, more and more vehicles have begun to be equipped with intelligent driving systems, and higher-level intelligent driving systems have gradually entered people's field of vision. The higher the level, the higher the requirements for power supply safety; in the design of the vehicle low-voltage power supply system, more and more OEMs try to use new technologies to achieve weight reduction or lead ban in the selection of the main battery. Battery types correspond to different energy management strategies,

In the usual design, lead-acid batteries are used as 12V batteries (including the main battery and backup battery), and the control logic is simple to ensure that the battery is fully charged under normal conditions;

However, using lead-acid batteries as the main battery will have the following problems: 1) The life of lead-acid batteries is difficult to diagnose, and the reliable power supply of the vehicle power system cannot be guaranteed, especially after the vehicle is used for a long time, the load on the main circuit of the vehicle cannot be guaranteed. Then the safety of the whole vehicle cannot be guaranteed; 2) The lead-acid battery has a low lifespan and is relatively heavy; 3) The lead-acid battery cannot be actively controlled to deal with abnormal static current and other situations;

SUMMARY OF THE INVENTION

In order to solve the above-mentioned technical problems, in view of the above problems, the present invention discloses an energy management method for a lithium battery. By determining the target current of the battery according to the target charge of the lithium battery, and charging or discharging the battery with this current, the occurrence of lithium battery is avoided. The problem of overcharge or overdischarge of the battery improves the reliability of the system. At the same time, it limits the charging voltage of the battery to protect the battery life, thereby improving the life of the vehicle power supply system.

In order to achieve the above object of the invention, the present invention provides an energy management method for a lithium battery, the method comprising: acquiring the current charge amount, the preset standard charge amount and the current temperature of the lithium battery;

Determine the target charge amount of the lithium battery according to the current charge amount and the preset standard charge amount;

determining the target current of the battery according to the target amount of charge and the current temperature;

comparing the current amount of charge with a preset first threshold;

If the current amount of charge is less than the first threshold, charging the lithium battery according to the target current;

If the current amount of charge is greater than the first threshold, the lithium battery is discharged according to the target current.

Further, after the lithium battery is charged according to the target current, the method further includes:

Real-time acquisition of the voltage across the lithium battery during charging;

determining whether the voltage satisfies a first preset condition;

If so, the lithium battery is charged with a preset current limit.

Further, it also includes:

Obtain the rate of change of the voltage across the lithium battery during charging or discharging;

judging whether the rate of change of the voltage is less than or equal to a preset second threshold;

If so, maintain the voltage change rate to charge or discharge the battery.

Further, the determining the target amount of charge of the lithium battery according to the current amount of charge and the preset standard amount of charge includes:

subtracting the current charge amount from the preset standard charge amount to obtain a charge amount difference;

Set the difference of the charge amount to the target charge amount of the lithium battery.

Further, it also includes:

Obtain the current charge of the lithium battery in the vehicle static mode, the current temperature of the lithium battery and the static current data of the lithium battery within a preset time period;

judging whether the current charge of the lithium battery, the current temperature of the lithium battery and the static current data meet a second preset condition;

If so, the discharge of the lithium battery is terminated.

Further, the judging whether the current charge of the lithium battery, the current temperature of the lithium battery and the static current data meet the second preset condition includes:

comparing the current charge of the lithium battery with a preset third threshold, comparing the current temperature of the lithium battery with a preset fourth threshold, and comparing the static current data with a third preset condition;

When the current temperature of the lithium battery is greater than a preset fourth threshold, and/or the current charge of the lithium battery is less than a preset third threshold and the static current data satisfies a third preset condition , determining that the current charge level of the lithium battery, the current temperature of the lithium battery and the static current data satisfy the second preset condition.

The present invention provides an energy management device for a lithium battery, the device comprising:

The information acquisition module is used to acquire the current charge amount, the preset standard charge amount and the current temperature of the lithium battery;

a target charge amount determination module, configured to determine the target charge amount of the lithium battery according to the current charge amount and the preset standard charge amount;

a target current determination module, configured to determine the target current of the battery according to the target charge amount and the current temperature;

a comparison module, configured to compare the current amount of charge with a preset first threshold;

a first charging module, configured to charge the lithium battery according to the target current when the current amount of charge is less than the first threshold;

A first discharge module, configured to discharge the lithium battery according to the target current when the current amount of charge is greater than the first threshold.

Further, it also includes:

The voltage acquisition module is used to acquire the voltage across the lithium battery in real time during the charging process;

a first judging module for judging whether the voltage satisfies a first preset condition;

The first processing module is configured to stop charging the lithium battery.

The present invention provides an electronic device, the electronic device includes a processor and a memory, and the memory stores at least one instruction, at least one program, a code set or an instruction set, the at least one instruction, the at least one program , The code set or the instruction set is loaded and executed by the processor to implement the energy management method for a lithium battery as described above.

The present invention provides a computer-readable storage medium, wherein the storage medium stores at least one instruction, at least one piece of program, code set or instruction set, the at least one instruction, the at least one piece of program, the code set or the The instruction set is loaded and executed by the processor to implement the energy management method of the lithium battery as described above.

Implementing the embodiment of the present invention has the following beneficial effects:

The energy management method of the lithium battery disclosed in the present invention avoids the problem of overcharge or overdischarge of the lithium battery by determining the target current of the battery according to the target charge amount of the lithium battery, and charging or discharging the battery with the current. The reliability of the system, at the same time, limits the charging voltage of the battery to protect the battery life, thereby improving the life of the vehicle power supply system.

Description of drawings

In order to more clearly illustrate the energy management method, device, electronic device and storage medium of the lithium battery according to the present invention, the accompanying drawings required by the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative effort.

FIG. 1 is an energy management system of a lithium battery provided by an embodiment of the present invention;

2 is a schematic flowchart of an energy management method for a lithium battery according to an embodiment of the present invention;

3 is a schematic flowchart of a charging limitation method provided by an embodiment of the present invention;

4 is a schematic flowchart of an energy management method for a lithium battery in a stationary state of a vehicle according to an embodiment of the present invention;

5 is a schematic structural diagram of an energy management device for a lithium battery according to an embodiment of the present invention;

6 is a schematic structural diagram of an electronic device for implementing an energy management method for a lithium battery according to an embodiment of the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

It should be noted that the terms "first", "second" and the like in the description and claims of the present invention and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a specific sequence or sequence. It is to be understood that the data so used may be interchanged under appropriate circumstances such that the embodiments of the invention described herein can be practiced in sequences other than those illustrated or described herein. Furthermore, the terms "comprising" and "having" and any variations thereof, are intended to cover non-exclusive inclusion, for example, a process, method, system, product or server comprising a series of steps or units is not necessarily limited to those expressly listed Rather, those steps or units may include other steps or units not expressly listed or inherent to these processes, methods, products or devices.

Please refer to FIG. 1. FIG. 1 shows a system that can be used to implement the solution of the embodiment of the present invention. As shown in FIG. 1, the system may at least include a lithium battery charging device 01 and a terminal 02. The lithium battery charging device 01 and the terminal 02 communication, which can realize the charging of the lithium battery according to the current charge amount, the preset standard charge amount and the current temperature of the lithium battery obtained by the lithium battery charging device.

The terminal 02 may be a physical device of the type such as a vehicle control device, a smart phone, a desktop computer, a tablet computer, a notebook computer, a digital assistant, a smart wearable device, etc.; wherein, the smart wearable device may include a smart bracelet, a smart watch, etc. , smart glasses, smart helmets, etc. Of course, the terminal 02 is not limited to the above-mentioned electronic device with a certain entity, and may also be software running in the above-mentioned electronic device. For example, the terminal 02 may be a web page or application provided by a service provider to the user.

The terminal 02 may include a display screen, a storage device and a processor connected through a data bus. The display screen is used to display an operation interface or interact with a user, and the display screen may be a touch screen of a car, a mobile phone, or a tablet computer, or the like. The storage device is used to store the program code and data of the photographing device, etc. The storage device may be the internal memory of the terminal 02, or may be a smart media card, a secure digital card, or a flash memory. storage devices such as flash cards. The processor may be a single-core or multi-core processor.

The following describes the energy management method of the lithium battery based on the above system of the present invention with reference to FIG. 2, which can be applied to vehicles with batteries of various voltages; Supercapacitors and high-voltage batteries, etc.

In the embodiments of the present specification, the present application may include, but is not limited to, an energy management method for a 12V lithium battery.

In the embodiment of this specification, a 12V lithium battery can be used as the main battery. The 12V lithium battery can include but is not limited to four 45Ah LFP system lithium battery cells, and the four lithium battery cells are connected in series; The weight is controlled below 6kg, which has a great weight reduction effect compared to the existing lead-acid batteries.

In the embodiment of this description, a battery system including a 12V lithium battery as the main battery has an active or passive balancing capability; the 12V lithium battery is integrated with a controller, and the controller has the function of monitoring signals such as voltage, temperature, and current. LIN for communication.

In the embodiment of this specification, a resettable fuse and a disconnecting device are integrated inside the lithium battery. The disconnecting device is used to disconnect the power supply line of the lithium battery; the resettable fuse is used to restart the lithium battery after the power supply line of the lithium battery is disconnected. connect.

Please refer to FIG. 2 , which is a flowchart of an energy management method for a lithium battery provided by an embodiment of the present invention. This specification provides the operation steps of the method as described in the embodiment or the flowchart, but is based on routines; or Non-creative work may involve more or fewer operational steps. The sequence of steps enumerated in the embodiment is only one of the execution sequences of many steps, and does not represent the only execution sequence. The energy management method for lithium batteries in this application can be executed according to the method sequence shown in the embodiment or the accompanying drawings. . Specifically, as shown in Figure 2, the method includes:

S201, obtain the current charge amount, the preset standard charge amount and the current temperature of the lithium battery;

It should be noted that, in the embodiments of this specification, the current temperature of the lithium battery can be detected by an internal controller;

The preset standard charge level can be 90%.

S203, determining the target amount of charge of the lithium battery according to the current amount of charge and the preset standard amount of charge;

In the embodiment of this specification, the determining the target amount of charge of the lithium battery according to the current amount of charge and the preset standard amount of charge includes:

subtracting the current charge amount from the preset standard charge amount to obtain a charge amount difference;

Set the difference of the charge amount to the target charge amount of the lithium battery.

In the embodiment of this specification, the preset standard charge amount may be subtracted from the current charge amount, and the obtained charge amount difference may be the target charge amount of the lithium battery.

For example, when the current charge amount is 0, the target charge amount may be 0-90%, that is, -90%.

S205, determine the target current of the battery according to the target amount of charge and the current temperature;

In the embodiment of this specification, the target current of the battery is determined according to the slope of the relationship between the target amount of charge and the current temperature;

For example, when the temperature of the lithium battery is -30°C and the target charge capacity is -90%, the target current of the battery is 30A; when the temperature of the lithium battery is -30°C and the target charge capacity is -20%, the target current of the battery is 30A; at this time, it can be determined that the slope of the relationship between the target charge amount and the current temperature is 1; but the slope of the relationship is not limited to be equal to 1.

S207, compare the current charge amount with a preset first threshold;

In the embodiment of this specification, the preset first threshold may include, but is not limited to, the value of the standard amount of charge, that is, the first threshold may also be 90%;

S209, if the current charge amount is less than the first threshold, charge the lithium battery according to the target current.

In the embodiment of the present specification, when the current state of charge is less than 90%, the lithium battery is charged according to the target current.

S211, if the current amount of charge is greater than the first threshold, discharge the lithium battery according to the target current

In the embodiment of this specification, if the current charge amount is greater than 90%, the lithium battery is discharged according to the target current.

In another embodiment of this specification, if the current charge amount is equal to the preset first threshold, neither charging nor discharging, that is, the target current of the battery is 0A.

As shown in FIG. 3 , in the embodiment of this specification, it shows a schematic flowchart of a charging limitation method provided by the embodiment of this specification; the details are as follows:

After the lithium battery is charged according to the target current, the method further includes:

S301, obtain the voltage at both ends of the lithium battery in real time during the charging process;

In the embodiment of this specification, at the current temperature of the lithium battery, the voltage at both ends of the lithium battery is obtained during the process of charging the lithium battery;

S303, judging whether the voltage meets a first preset condition;

In the embodiment of this specification, the judging whether the voltage satisfies the first preset condition includes:

judging whether the voltage across the lithium battery is greater than or equal to a preset fifth threshold;

If so, it is determined that the voltage satisfies the first preset condition;

Specifically, the first preset condition may include, but is not limited to, the voltage at both ends of the lithium battery is greater than or equal to the maximum threshold of the charging voltage at the current temperature of the lithium battery; the preset fifth threshold may include, but is not limited to, the charging voltage at the current temperature of the lithium battery the maximum threshold;

For example, when the current temperature of a lithium battery is -10°C, its maximum charging voltage is 13.6V.

Specifically, the relationship between the temperature of the vehicle lithium battery and its maximum charging voltage may include, but is not limited to, the relationship shown in the following table;

Temp(℃) -40 -10 0 10 45 65 Voltage(V) 13.6 13.6 13.7 14.4 14.4 13.6

S305, if yes, charge the lithium battery with a preset current limit.

In the embodiment of this specification, the preset current limit may include, but is not limited to, a current of 0 ampere (A); if the voltage across the lithium battery reaches a preset fifth threshold, the lithium battery is charged with a current of 0A.

The present application limits the charging voltage of the battery according to the current temperature of the lithium battery, which can protect the battery life.

In another embodiment of this specification, during the process of charging and discharging the lithium battery, the method further includes:

S1, obtain the rate of change of the voltage at both ends of the lithium battery during charging or discharging;

In the embodiments of the present specification, during the charging and discharging process of the lithium battery, the rate of change of the voltage at both ends of the lithium battery is acquired in real time.

S2, judging whether the rate of change of the voltage is less than or equal to a preset second threshold;

In the embodiment of the present specification, the preset second threshold value may include, but is not limited to, 100 mV/s, that is, it is determined whether the increase or decrease of the voltage per second is less than or equal to 100 mV.

S3, if yes, maintain the voltage change rate to charge or discharge the battery.

In the embodiment of this specification, if the rate of change of the voltage is less than or equal to the preset second threshold, the rate of change can be maintained to continue charging or discharging the lithium battery;

Specifically, it may be that the increase or decrease speed of the control voltage cannot be lower than 100mV/s.

In the embodiments of the present specification, during the driving process of the vehicle,

Real-time monitoring of the status of the battery disconnect device;

Judging whether the state of the disconnecting device is the opened state;

If so, a warning is issued to alert the driver that the vehicle is at risk.

As shown in FIG. 4 , in the embodiment of this specification, it shows a schematic flowchart of an energy management method for a lithium battery in a stationary state of a vehicle provided by the embodiment of this specification; the details are as follows:

S401, acquiring the current charge amount of the lithium battery in the vehicle static mode, the current temperature of the lithium battery and the static current data of the lithium battery in a preset time period;

In the embodiment of this specification, when the vehicle is stationary, the current charge of the lithium battery, the current temperature of the lithium battery, and the static current data of the lithium battery within a preset time period are obtained;

Specifically, the static current data of the lithium battery within the preset time period may include, but not limited to, the flow rate of the static current per unit time within the preset time period.

S403, judging whether the current charge of the lithium battery, the current temperature of the lithium battery, and the static current data satisfy a second preset condition;

In the embodiment of this specification, the judging whether the current charge amount of the lithium battery, the current temperature of the lithium battery and the static current data satisfy the second preset condition includes:

A1, compare the current charge of the lithium battery with a preset third threshold, compare the current temperature of the lithium battery with a preset fourth threshold, and compare the static current data with a third preset condition Compare;

Specifically, it can be determined whether the current charge of the lithium battery is less than a preset third threshold, whether the current temperature of the lithium battery is greater than a preset fourth threshold, and whether the static current data satisfies a third preset condition ;

In this illustrative embodiment, the preset third threshold may include, but is not limited to, 15%; the preset fourth threshold may include, but is not limited to, 85° C.; The flow of internal static current is 1A;

A2, when the current temperature of the lithium battery is greater than a preset fourth threshold, and/or the current charge of the lithium battery is less than a preset third threshold and the static current data satisfies a third preset When conditions are met, it is determined that the current charge of the lithium battery, the current temperature of the lithium battery, and the static current data satisfy a second preset condition;

In the embodiment of this specification, when the current temperature of the lithium battery is greater than the preset fourth threshold, or the current charge of the lithium battery is less than the preset third threshold and the static current data satisfies the third preset condition, or the lithium battery When the current charge of the battery is less than a preset third threshold, the current temperature of the lithium battery is greater than a preset fourth threshold, and the static current data satisfies a third preset condition, the current charge of the lithium battery can be determined. , the current temperature of the lithium battery and the static current data satisfy the second preset condition.

S405, if yes, terminate the discharge of the lithium battery.

In the embodiment of this specification, when it is determined that the current charge level of the lithium battery, the current temperature of the lithium battery, and the static current data satisfy the second preset condition, the disconnection device of the lithium battery can be turned on, so that the lithium battery can be disconnected. The battery terminates the discharge; the surface lithium battery is over-discharged, which affects the life of the lithium battery.

In the embodiments of this specification, in any of the following situations, the resettable fuse of the lithium battery reconnects the disconnected line of the lithium battery;

When the Lin bus starts to transmit signals or the external voltage of the lithium battery is higher than the limit or the mechanical switch is triggered, the disconnected lithium battery can be connected to the line; to restore normal charging and discharging.

Specifically, the external voltage of the lithium battery is higher than the limit value may be that the external voltage of the lithium battery is higher than the current voltage value of the lithium battery plus 0.2V.

It can be seen from the above embodiments of the energy management method, device, electronic device and storage medium for lithium batteries provided by the present invention that the present embodiment of the present invention obtains the current charge amount, preset standard charge amount and current temperature of the lithium battery; The amount of charge and the preset standard amount of charge determine the target amount of charge of the lithium battery; determine the target current of the battery according to the target amount of charge and the current temperature; determine whether the current amount of charge is less than the first amount of charge a threshold; if yes, charge the lithium battery according to the target current; using the technical solutions provided by the embodiments of this specification, determine the target current of the battery according to the target charge of the lithium battery, and use the current to charge the battery Charging or discharging can avoid the problem of overcharge or overdischarge of the lithium battery, which improves the reliability of the system. At the same time, it limits the charging voltage of the battery to protect the battery life, thereby improving the life of the vehicle power supply system.

An embodiment of the present invention also provides an energy management device for a lithium battery, as shown in FIG. 5 , which is a schematic structural diagram of an energy management device for a lithium battery provided by an embodiment of the present invention; The device includes:

an information acquisition module 510, configured to acquire the current charge amount, the preset standard charge amount and the current temperature of the lithium battery;

a target charge amount determination module 520, configured to determine the target charge amount of the lithium battery according to the current charge amount and the preset standard charge amount;

a target current determination module 530, configured to determine the target current of the battery according to the target charge amount and the current temperature;

a comparison module 540, configured to compare the current charge amount with a preset first threshold;

a first charging module 550, configured to charge the lithium battery according to the target current if the current amount of charge is less than the first threshold;

The first discharge module 560 is configured to discharge the lithium battery according to the target current if the current amount of charge is greater than the first threshold.

In the embodiment of this specification, it also includes:

The voltage acquisition module is used to acquire the voltage across the lithium battery in real time during the charging process;

a first judging module for judging whether the voltage satisfies a first preset condition;

The first processing module is used for charging the lithium battery with a preset current limit.

In the embodiment of this specification, it also includes:

The rate-of-change acquisition module is used to acquire the rate of change of the voltage across the lithium battery during charging or discharging;

a second judging module, configured to judge whether the rate of change of the voltage is less than or equal to a preset second threshold;

The second processing module is used for maintaining the voltage change rate to charge or discharge the battery.

In the embodiment of this specification, the target amount of charge determination module 520 includes:

a first processing unit, configured to subtract the current charge amount from the preset standard charge amount to obtain a charge amount difference;

The second processing unit is configured to calculate the target charge amount of the lithium battery from the difference in charge amount.

In the embodiment of this specification, it also includes:

The first acquisition module is used to acquire the current charge amount of the lithium battery in the vehicle static mode, the current temperature of the lithium battery and the static current data of the lithium battery within a preset time period;

a third judging module, configured to judge whether the current charge of the lithium battery, the current temperature of the lithium battery and the static current data meet the second preset condition;

The third processing module is used for terminating the discharge of the lithium battery.

In the embodiment of this specification, the third judgment module includes:

The comparison unit is configured to compare the current charge of the lithium battery with a preset third threshold, compare the current temperature of the lithium battery with a preset fourth threshold, and compare the static current data with the third preset threshold. set conditions for comparison;

A determination unit, used for when the current temperature of the lithium battery is greater than the preset fourth threshold, and/or the current charge of the lithium battery is less than the preset third threshold and the static current data satisfies the first threshold In the case of three preset conditions, it is determined that the current charge level of the lithium battery, the current temperature of the lithium battery, and the static current data satisfy the second preset condition.

An embodiment of the present invention provides an electronic device, the device includes a processor and a memory; the processor is adapted to implement one or more instructions; the memory stores an or one or more instructions, the one or more instructions are suitable for the processor to load and execute to implement the energy management method for a lithium battery according to the above method embodiments.

The memory can be used to store software programs and modules, and the processor executes various functional applications and data processing by running the software programs and modules stored in the memory. The memory may mainly include a stored program area and a stored data area, wherein the stored program area may store an operating system, application programs required for functions, etc.; the stored data area may store data created according to the use of the device, and the like. Additionally, the memory may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device. Accordingly, the memory may also include a memory controller to provide processor access to the memory.

Further, FIG. 6 shows a schematic diagram of the hardware structure of an electronic device for implementing the energy management method for a lithium battery provided by the embodiment of the present invention, and the electronic device may participate in forming or include the energy management method provided by the embodiment of the present invention. device or system. As shown in FIG. 6 , the electronic device 1 may include one or more processors 102 (102a, 102b, . A processing device such as a programmable logic device FPGA), a memory 104 for storing data, and a transmission device 106 for a communication function. In addition, may also include: display, input/output interface (I/O interface), universal serial bus (USB) port (may be included as one of the ports of the I/O interface), network interface, power supply and/or camera. Those of ordinary skill in the art can understand that the structure shown in FIG. 6 is only a schematic diagram, which does not limit the structure of the above electronic device. For example, the electronic device 1 may also include more or fewer components than those shown in FIG. 6 , or have a different configuration than that shown in FIG. 6 .

It should be noted that the one or more processors 102 and/or other data processing circuits described above may generally be referred to herein as "data processing circuits." The data processing circuit may be embodied in whole or in part as software, hardware, firmware or any other combination. Furthermore, the data processing circuit may be a single independent processing module, or integrated in whole or in part into any of the other elements in the electronic device 1 . As referred to in the embodiments of the present application, the data processing circuit acts as a kind of processor control (eg, selection of a variable resistance termination path connected to an interface).

The memory 104 can be used to store software programs and modules of application software, such as program instructions/data storage devices corresponding to the methods described in the embodiments of the present invention, the processor 102 executes the software programs and modules stored in the memory 104 by running the software programs and modules. Various functional applications and data processing implement the above-mentioned vehicle navigation method. Memory 104 may include high-speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some instances, the memory 104 may further include memory located remotely from the processor 102, and these remote memories may be connected to the electronic device 1 through a network. Examples of such networks include, but are not limited to, vehicle networks, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.

Transmission means 106 are used to receive or transmit data via a network. The specific example of the above-mentioned network may include a wireless network provided by the communication provider of the electronic device 1 . In one example, the transmission device 106 includes a network adapter (Network Interface Controller, NIC), which can be connected to other network devices through a base station so as to communicate with the Internet. In an example, the transmission device 106 may be a radio frequency (Radio Frequency, RF) module, which is used for wirelessly communicating with the Internet.

The display may be, for example, a liquid crystal display (LCD) of the touch screen type, which enables a user to interact with the user interface of the electronic device 1 .

Embodiments of the present invention also provide a computer-readable storage medium, which can be set in an energy management terminal of a lithium battery to store information related to an energy management method for implementing a lithium battery in the method embodiment. At least one instruction, at least one piece of program, code set or instruction set, the at least one instruction, this at least one piece of program, the code set or instruction set can be loaded and executed by the processor of the electronic device to realize the lithium battery provided by the above method embodiments energy management methods.

Optionally, in this embodiment, the above-mentioned storage medium may include but is not limited to: a U disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a mobile hard disk, a magnetic Various media that can store program codes, such as discs or optical discs.

It should be noted that: the above-mentioned order of the embodiments of the present invention is only for description, and does not represent the advantages and disadvantages of the embodiments. And the foregoing describes specific embodiments of the present specification. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recited in the claims can be performed in an order different from that in the embodiments and still achieve desirable results. Additionally, the processes depicted in the figures do not necessarily require the particular order shown, or sequential order, to achieve desirable results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

Each embodiment in this specification is described in a progressive manner, and the same and similar parts between the various embodiments may be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the apparatus and server embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and for related parts, please refer to the partial descriptions of the method embodiments.

Those of ordinary skill in the art can understand that all or part of the steps of implementing the above embodiments can be completed by hardware, or can be completed by instructing relevant hardware through a program, and the program can be stored in a computer-readable storage medium. The storage medium mentioned may be a read-only memory, a magnetic disk or an optical disk, etc.

What is disclosed above is only a preferred embodiment of the present invention, and of course it cannot limit the scope of the rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope of the present invention.

Claims (10)

1. An energy management method for a lithium battery, characterized in that: the method comprises: Obtain the current charge, preset standard charge and current temperature of the lithium battery; Determine the target charge amount of the lithium battery according to the current charge amount and the preset standard charge amount; determining the target current of the battery according to the target amount of charge and the current temperature; comparing the current amount of charge with a preset first threshold; If the current amount of charge is less than the first threshold, charging the lithium battery according to the target current; If the current amount of charge is greater than the first threshold, the lithium battery is discharged according to the target current. 2 . The energy management method for a lithium battery according to claim 1 , wherein: after the lithium battery is charged according to the target current, the method further comprises: 2 . Real-time acquisition of the voltage across the lithium battery during charging; determining whether the voltage satisfies a first preset condition; If so, stop charging the lithium battery with a preset current limit. 3. The energy management method of lithium battery according to claim 1, is characterized in that: also comprises: Obtain the rate of change of the voltage across the lithium battery during charging or discharging; judging whether the rate of change of the voltage is less than or equal to a preset second threshold; If so, maintain the voltage change rate to charge or discharge the battery. 4 . The energy management method of a lithium battery according to claim 1 , wherein: determining the target charge amount of the lithium battery according to the current charge amount and the preset standard charge amount, comprising: 5 . subtracting the current charge amount from the preset standard charge amount to obtain a charge amount difference; Set the difference of the charge amount to the target charge amount of the lithium battery. 5. The energy management method of a lithium battery according to claim 1, characterized in that: further comprising: Obtain the current charge of the lithium battery in the vehicle static mode, the current temperature of the lithium battery and the static current data of the lithium battery within a preset time period; judging whether the current charge of the lithium battery, the current temperature of the lithium battery and the static current data meet a second preset condition; If so, the discharge of the lithium battery is terminated. 6 . The energy management method of a lithium battery according to claim 5 , characterized in that: said judging whether the current charge amount of the lithium battery, the current temperature of the lithium battery and the static current data satisfy the second preset. 7 . set conditions, including: comparing the current charge of the lithium battery with a preset third threshold, comparing the current temperature of the lithium battery with a preset fourth threshold, and comparing the static current data with a third preset condition; When the current temperature of the lithium battery is greater than a preset fourth threshold, and/or the current charge of the lithium battery is less than a preset third threshold and the static current data satisfies a third preset condition , determining that the current charge level of the lithium battery, the current temperature of the lithium battery and the static current data satisfy the second preset condition. 7. An energy management device for a lithium battery, wherein the device comprises: The information acquisition module is used to acquire the current charge amount, the preset standard charge amount and the current temperature of the lithium battery; a target charge amount determination module, configured to determine the target charge amount of the lithium battery according to the current charge amount and the preset standard charge amount; a target current determination module, configured to determine the target current of the battery according to the target charge amount and the current temperature; a comparison module, configured to compare the current amount of charge with a preset first threshold; a first charging module, configured to charge the lithium battery according to the target current when the current amount of charge is less than the first threshold; A first discharge module, configured to discharge the lithium battery according to the target current when the current amount of charge is greater than the first threshold. 8. The energy management device of the lithium battery according to claim 7, characterized in that: further comprising: The voltage acquisition module is used to acquire the voltage across the lithium battery in real time during the charging process; a first judging module for judging whether the voltage satisfies a first preset condition; The first processing module is configured to stop charging the lithium battery. 9. An electronic device, characterized in that the electronic device comprises a processor and a memory, and the memory stores at least one instruction, at least a piece of program, code set or instruction set, the at least one instruction, the at least one A piece of program, the code set or the instruction set is loaded and executed by the processor to implement the energy management method for a lithium battery according to any one of claims 1-7. 10. A computer-readable storage medium, characterized in that: the storage medium stores at least one instruction, at least one program, a code set or an instruction set, the at least one instruction, the at least one program, the code The set or the instruction set is loaded and executed by the processor to implement the energy management method of the lithium battery according to any one of claims 1-7.

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