CN112590494A

CN112590494A - Heat pump control method and device, medium, equipment and vehicle

Info

Publication number: CN112590494A
Application number: CN202011582751.0A
Authority: CN
Inventors: 刘鹏飞; 赵旭; 宋帅; 蔡静
Original assignee: Mind Electronics Appliance Co Ltd
Current assignee: Mind Electronics Appliance Co Ltd
Priority date: 2020-12-28
Filing date: 2020-12-28
Publication date: 2021-04-02
Anticipated expiration: 2040-12-28
Also published as: CN112590494B

Abstract

The disclosure relates to a heat pump control method and device, a medium, equipment and a vehicle. The method comprises the following steps: acquiring state information of a plurality of reference factors; determining the current grade of each reference factor according to the state information of each reference factor; calculating the serial number of the current working condition in a preset table according to the current grade of each reference factor; finding an array of the selectable modes corresponding to the calculated serial number in a preset table; determining the current optional working mode of the heat pump according to the searched array of the optional modes; controlling the heat pump to operate in the determined currently selectable operating mode. Therefore, the state information of the multiple reference factors does not need to be determined one by one, the current optional working mode of the heat pump is judged according to the state information of all the reference factors, the preset table is utilized to perform simple calculation and table lookup to determine the current optional working mode of the heat pump, and the method is simple and fast.

Description

Heat pump control method and device, medium, equipment and vehicle

Technical Field

The disclosure relates to the technical field of automatic control of heat pumps, in particular to a heat pump control method and device, a medium, equipment and a vehicle.

Background

At present, new energy automobiles mainly use electric cars, one bottleneck technology of the electric cars is the endurance mileage of batteries, and it is important to reduce the electric quantity consumption as much as possible under the background that the endurance mileage of the batteries cannot be broken through. The electric car can not heat according to the waste heat of the engine like an oil car in winter, but actively generates heat by consuming a large amount of electric energy through the heater, a compressor of the traditional electric car can only refrigerate, but the compressor can also heat by utilizing a heat pump technology, the heat of the external environment of the car and the waste heat on the car are utilized, the heating efficiency is greatly improved, a large amount of electric energy can be saved when the electric car heats in winter, and the comprehensive endurance mileage of the electric car is improved.

The heat pump technology is applied to the vehicle, so that the vehicle carrying the heat pump system can stably and reliably realize the heat management function of the whole vehicle under various conditions, the working mode in which the heat pump system should operate is automatically judged according to the external environment condition and the current operating parameters of the vehicle, and the mode switching is automatically executed. Therefore, a complete and feasible set of automatic control strategies for heat pumps is needed.

Disclosure of Invention

The purpose of this disclosure is to provide a reliable, efficient heat pump control method and device, medium, equipment, vehicle.

In order to achieve the above object, the present disclosure provides a heat pump control method, the method including:

acquiring state information of a plurality of reference factors;

determining the current grade of each reference factor according to the state information of each reference factor;

calculating the serial number of the current working condition in a preset table according to the current grade of each reference factor;

finding an array of selectable modes corresponding to the calculated serial number in the preset table;

determining the current optional working mode of the heat pump according to the searched array of the optional modes;

controlling the heat pump to operate in the determined currently selectable operating mode.

Optionally, the plurality of reference factors includes ambient temperature, battery demand, dehumidification demand, and occupant demand.

Optionally, calculating a serial number of the current operating condition in a predetermined table according to the current level of each reference factor, including:

calculating the serial number of the current working condition in a preset table by the following formula:

S＝mBCD+nCD+pD+q

wherein S represents the serial number of the current working condition in a preset table;

m represents the grade of the environment temperature at present, the grade of the environment temperature comprises 0, 1, 2, … … and (A-1), A represents the total number of grades of the environment temperature;

n represents the level of the current battery demand, the levels of the battery demand comprise 0, 1, 2, … … and (B-1), and B represents the total level of the battery demand;

p represents the level of the dehumidification demand at present, the levels of the dehumidification demand comprise 0, 1, 2, … … and (C-1), and C represents the total number of levels of the dehumidification demand;

q represents the level at which the occupant demand is currently located, the levels of the occupant demand include 0, 1, 2, … …, (D-1), and D represents the total number of levels of the occupant demand.

determining a serial number of a current working condition in a preset table through a two-dimensional array, wherein a value of a first dimension of the two-dimensional array is a current level of the environment temperature, and a value of a second dimension of the two-dimensional array is calculated through the following formula:

T＝nCD+pD+q

wherein T represents a value of a second dimension of the two-dimensional array;

Optionally, determining the current optional working mode of the heat pump according to the searched array of optional modes includes:

acquiring a numerical value of each working mode in a plurality of working modes in an optional state;

and determining the current optional working mode of the heat pump in a position and mode according to the searched array of the optional modes and the numerical value of each working mode in the optional state.

Optionally, the array of the selectable mode is a hexadecimal number.

The present disclosure also provides a heat pump control apparatus, the apparatus comprising:

the acquisition module is used for acquiring the state information of a plurality of reference factors;

the first determining module is used for determining the current grade of each reference factor according to the state information of each reference factor;

the calculating module is used for calculating the serial number of the current working condition in a preset table according to the current grade of each reference factor;

the searching module is used for searching an array of the selectable modes corresponding to the calculated serial numbers in the preset table;

the second determining module is used for determining the current optional working mode of the heat pump according to the searched array of the optional modes;

a control module for controlling the heat pump to operate in the determined current selectable operating mode.

The present disclosure also provides a computer readable storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of the above-described method provided by the present disclosure.

The present disclosure also provides an electronic device, comprising:

a memory having a computer program stored thereon;

a processor for executing the computer program in the memory to implement the steps of the above-described method provided by the present disclosure.

The present disclosure also provides a vehicle including a heat pump and the heat pump control device provided by the present disclosure.

Through the technical scheme, a table is predetermined and comprises the corresponding relation among the levels of a plurality of reference factors, the current optional working mode of the heat pump, the serial number and the array of the optional modes. When the working mode of the heat pump needs to be determined, the current grade of each reference factor is determined, the serial number of the current working condition in a preset table is calculated according to the grades, the array of the optional modes corresponding to the calculated serial number is searched in the table, and then the current optional working mode of the heat pump is determined according to the searched array of the optional modes. Therefore, the state information of the multiple reference factors does not need to be determined one by one, the current optional working mode of the heat pump is judged according to the state information of all the reference factors, the current optional working mode of the heat pump is rapidly determined by simply calculating the grade of each reference factor and looking up the table by utilizing the pre-filled table, and the method is simple and fast.

Additional features and advantages of the disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:

FIG. 1 is a flow chart of a heat pump control method provided by an exemplary embodiment;

fig. 2 is a block diagram of a heat pump control apparatus provided in an exemplary embodiment;

FIG. 3 is a block diagram of an electronic device, shown in an exemplary embodiment.

Detailed Description

The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.

Fig. 1 is a flowchart of a heat pump control method according to an exemplary embodiment. As shown in fig. 1, the method may include the steps of:

step S101, acquiring state information of a plurality of reference factors;

step S102, determining the current grade of each reference factor according to the state information of each reference factor;

step S103, calculating the serial number of the current working condition in a preset table according to the current grade of each reference factor;

step S104, finding the array of the selectable mode corresponding to the calculated serial number in a preset table;

step S105, determining the current optional working mode of the heat pump according to the searched array of the optional modes;

and step S106, controlling the heat pump to operate in the determined current optional working mode.

The multiple reference factors are factors having influence on the working mode of the heat pump, and include various types of factors such as environment, vehicle body and demand. For example, the plurality of reference factors may include ambient temperature, battery requirements, dehumidification requirements, and occupant requirements, among others. In the related art, these reference factors are also used to determine the operation mode of the heat pump. In practical applications, the reference factors can be as many as a dozen. The status information may be specific parameter values, such as values of temperature, status of presence or absence of demand, etc.

The values or states within the possible range of each reference factor may be classified into several levels in advance. For example, the temperature is classified into different levels according to different intervals, and the demand is classified into two levels according to the presence or absence. The acquired current state information of each reference factor can be used for determining a good grade according to a preset grade strategy. For example, the level (e.g., number) of a reference factor abstractly quantifies the effect of the reference factor on the heat pump mode.

Table 1 is a predefined table provided by an exemplary embodiment. In table 1, the first four columns show four reference factors: ambient temperature, battery demand, dehumidification demand, and level of occupant demand. An important consideration affecting the mode of operation of the heat pump system is the ambient temperature in which the vehicle is located. The ambient temperature may be set to four levels of 0, 1, 2, 3, for example. For simplicity, table 1 only shows the case where the level of the ambient temperature is 1, by way of example.

TABLE 1

The influence types of the battery requirements on the heat pump system can be three, namely refrigeration requirements, heating requirements, no heating requirements and refrigeration requirements. The different types of battery requirements described above may be arranged in three levels, indicated by the numeral numbers 0, 1, 2. In order to meet the detailed requirements of the heat pump operation mode for different target temperatures for battery cooling and heating, the different target temperatures for battery cooling and heating may be further distinguished and indicated by reference numerals 0, 1, 2, and 3 … ….

According to the dehumidification requirements of passengers in the passenger compartment on the interior of the vehicle, the two conditions of dehumidification requirements and no dehumidification requirements are divided, and the grades are respectively represented by numerical numbers 0 and 1. The judgment of the dehumidification requirement can be based on the operation of the passenger on the man-machine interface in the vehicle, for example, the passenger presses a dehumidification button to indicate the dehumidification requirement.

The requirement of the passenger on the heat pump system in the passenger compartment can be divided into two types: the grades of the heat pump system with and without heating requirements can be respectively represented by the numerical numbers 0 and 1. Alternatively, three categories can be distinguished: the grades of the air conditioner with the heating requirement, the air conditioner without the heating requirement and the air conditioner with the cooling requirement are respectively represented by the numerical numbers 0, 1 and 2.

The determination of occupant demand may be determined based on two factors.

First, the subjective intent of the passenger from human-machine interface feedback. For example, when the passenger manually turns off the air conditioner, the passenger's demand can be judged as no heating or cooling demand, and the grade is recorded by the number corresponding to the demand. If the heating key of the man-machine interaction interface is pressed, the requirement of the passenger can be considered as the heating requirement.

Second, from the passenger compartment energy value calculated by the air conditioning comfort algorithm. When the air conditioner operates in an automatic control state, the air conditioner comprehensively calculates quantized numbers, namely energy values, reflecting the refrigerating and heating requirements of passengers according to a plurality of factors such as environment temperature, temperature in a vehicle, illumination intensity, target temperature gears manually set by the passengers and the like. And the refrigerating and heating requirements of the passenger compartment can be judged according to the upper limit and the lower limit of the hysteresis interval of the energy value.

In the "optional mode" column of table 1, it can be manually filled in advance by the system engineer according to the status information of the first four reference factors. In practical applications, the heat pump may operate in more than ten modes. Table 1 exemplarily lists two operation modes of "mode a" and "mode B", in each of which "0" or "1" is listed. Wherein "0" indicates that the mode is the non-selectable mode, and "1" indicates that the mode is the selectable mode. For example, in line 4 in the "optional mode", an outside temperature level of "1" indicates that the ambient temperature of the current vehicle is in a temperature zone of level "1"; a battery demand rating of "0" indicates a cooling demand; a level of dehumidification demand of "1" indicates that there is a dehumidification demand; a passenger demand rating of "1" indicates no heating demand. The corresponding "alternate mode" under this condition is mode A. In the column of the mode A, the value corresponding to the working condition is 1, which indicates that the mode A is an optional mode under the working condition; in the column "mode B", the value corresponding to the operating condition is "0", which indicates that mode B is the non-selectable mode in the operating condition.

The last column is the "serial number" which is the number in the table for each condition (each row representing a condition, i.e. different combinations of levels of various reference factors, into different conditions). If the working condition is determined, the serial number in the table is determined. If the grades of the multiple reference factors are arranged in the table according to a certain rule, the serial number corresponding to each working condition can be derived from the grades of the multiple reference factors under the working condition through a simple mathematical relationship.

Specifically, if the levels of the various reference factors are arranged in a table in a manner similar to table 1, in one embodiment, they may be calculated in accordance with a one-dimensional array. In this embodiment, on the basis of fig. 1, the step of calculating the serial number of the current operating condition in the predetermined table according to the current grade of each reference factor (step S103) may include: calculating the serial number of the current working condition in a preset table by the following formula:

S＝mBCD+nCD+pD+q

In yet another embodiment, the calculation may be based on a one-dimensional array. In this embodiment, on the basis of fig. 1, the step of calculating the serial number of the current operating condition in the predetermined table according to the current grade of each reference factor (step S103) may include: and determining the serial number of the current working condition in the preset table through the two-dimensional array. The value of the first dimension of the two-dimensional array is the current level of the ambient temperature, and the value of the second dimension of the two-dimensional array is calculated by the following formula:

T＝nCD+pD+q

where T represents the value of the second dimension of the two-dimensional array.

In table 1, the column of the "array of selectable modes" is a combination of the values of all the operation modes (the values are expressed as selectable modes or non-selectable modes) in order. For example, all the operating modes include two modes, i.e., a mode a and a mode B, and the operating conditions in row 4 in the "optional mode" are summarized, wherein the mode a is the optional mode and has a value of "1", and the mode B is the non-optional mode and has a value of "0". In the order of mode a followed by mode B, if the array of selectable modes is represented in binary, it can be represented as "10". In practical applications, the operation mode of the heat pump can be more than ten, so that the array of the selectable modes can be set to be hexadecimal numbers to simplify the expression. In table 1, the array of alternative patterns is represented in hexadecimal.

Next, an array of the selectable patterns corresponding to the calculated serial number is found in a predetermined table in step S104. The data in table 1 are well-defined, so that only a table lookup is needed to find the array of alternate patterns by sequence number.

The step (S104) of determining the current optional operation mode of the heat pump according to the searched array of optional modes may include:

acquiring a numerical value of each working mode in a plurality of working modes in an optional state; and determining the current optional working mode of the heat pump in a position and mode according to the searched array of the optional modes and the numerical value of each working mode in the optional state.

As described above, in table 1, the value in the selectable state of each operation mode is "1", and the value in the non-selectable state is "0". The array of the selectable mode is an array in which the values of the working modes are arranged according to the sequence of the working modes, so that which working modes are selectable can be determined in a bitwise and manner. For example, the array of the selectable modes obtained from the table lookup is hexadecimal number 0x3, and the bit occupied by the mode B is the lowest bit 0x1, and the lowest bit of 0x3 is "1" obtained by bitwise anding 0x3 and 0x1, so as to further obtain that the mode B is selectable under the current working condition; similarly, mode A occupies the second bit 0x2, and the second bit, which is obtained by bitwise AND of 0x3, is also "1", i.e., mode A is also optional at this time.

In addition, the code amount in the heat pump control system can be saved, and the code amount required by the steps is extremely low; the maintainability is strong, if the strategy is modified in the later period, the synchronous code modification is very convenient, and the 16-system array stored in the code can be directly obtained from the original strategy requirement only by filling and writing a fixed formula in an Excle table; the operation efficiency is high, and the table look-up process is a very fast calculation process; the Memory is saved, the array can be stored in a Read-Only Memory (ROM) in the form of static constants, and a static storage area in a more precious Random Access Memory (RAM) is not occupied.

In actual projects, the judgment conditions involved in the working mode judgment algorithm process can be dozens of types. In the embodiment of table 1, the original cooling and heating requirements of the passenger and the battery can be used as higher priority inputs, that is, the subjective will of the passenger is responded preferentially, the dehumidification requirement of the passenger is responded preferentially, the cooling and heating requirement of the entire vehicle to the battery is responded preferentially, and the direction of the working mode is determined by the original requirement.

In step S105, if it is determined that only one currently selectable operation mode of the heat pump is available, the heat pump may be controlled to operate in the operation mode; if various current optional working modes of the heat pump are determined, the working modes with the highest priority can be found out from the determined optional working modes according to the predetermined priority sequence, and the heat pump is controlled to operate in the working modes.

Fig. 2 is a block diagram of a heat pump control apparatus according to an exemplary embodiment. As shown in fig. 2, the heat pump control apparatus 200 may include an acquisition module 201, a first determination module 202, a calculation module 203, a lookup module 204, a second determination module 205, and a control module 206.

The obtaining module 201 is configured to obtain status information of a plurality of reference factors.

The first determining module 202 is configured to determine a current level of each reference factor according to the status information of each reference factor.

The calculating module 203 is configured to calculate a serial number of the current operating condition in the predetermined table according to the current grade of each reference factor.

The searching module 204 is configured to search a predetermined table for an array of selectable patterns corresponding to the calculated sequence number.

The second determining module 205 is configured to determine a currently selectable operating mode of the heat pump according to the searched array of selectable modes.

The control module 206 is used to control the heat pump to operate in the determined current selectable operating mode.

Optionally, the calculation module 203 may comprise a first calculation submodule.

The first calculating submodule is used for calculating the serial number of the current working condition in a preset table through the following formula:

S＝mBCD+nCD+pD+q

Optionally, the calculation module 203 may comprise a second calculation submodule.

And the second calculation submodule is used for determining the serial number of the current working condition in the preset table through the two-dimensional array. The value of the first dimension of the two-dimensional array is the current level of the ambient temperature, and the value of the second dimension of the two-dimensional array is calculated by the following formula:

T＝nCD+pD+q

Optionally, the second determination module 205 includes an acquisition sub-module and a determination sub-module.

The obtaining submodule is used for obtaining the numerical value of each working mode in the plurality of working modes in the selectable state.

The determining submodule is used for determining the current optional working mode of the heat pump in a bitwise and mode according to the searched array of the optional modes and the numerical value of each working mode in the optional state.

Optionally, the array of selectable patterns is a hexadecimal number.

With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.

Fig. 3 is a block diagram of an electronic device 300, shown in an exemplary embodiment. As shown in fig. 3, the electronic device 300 may include: a processor 301 and a memory 302. The electronic device 300 may also include one or more of a multimedia component 303, an input/output (I/O) interface 304, and a communication component 305.

The processor 301 is configured to control the overall operation of the electronic device 300, so as to complete all or part of the steps of the heat pump control method. The memory 302 is used to store various types of data to support operation at the electronic device 300, such as instructions for any application or method operating on the electronic device 300 and application-related data, such as contact data, transmitted and received messages, pictures, audio, video, and the like. The Memory 302 may be implemented by any type of volatile or non-volatile Memory device or combination thereof, such as Static Random Access Memory (SRAM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Erasable Programmable Read-Only Memory (EPROM), Programmable Read-Only Memory (PROM), Read-Only Memory (ROM), magnetic Memory, flash Memory, magnetic disk or optical disk. The multimedia components 303 may include a screen and an audio component. Wherein the screen may be, for example, a touch screen and the audio component is used for outputting and/or inputting audio signals. For example, the audio component may include a microphone for receiving external audio signals. The received audio signal may further be stored in the memory 302 or transmitted through the communication component 305. The audio assembly also includes at least one speaker for outputting audio signals. The I/O interface 304 provides an interface between the processor 301 and other interface modules, such as a keyboard, mouse, buttons, etc. These buttons may be virtual buttons or physical buttons. The communication component 305 is used for wired or wireless communication between the electronic device 300 and other devices. Wireless Communication, such as Wi-Fi, bluetooth, Near Field Communication (NFC), 2G, 3G, 4G, NB-IOT, eMTC, or other 5G, etc., or a combination of one or more of them, which is not limited herein. The corresponding communication component 305 may therefore include: Wi-Fi module, Bluetooth module, NFC module, etc.

In an exemplary embodiment, the electronic Device 300 may be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components for executing the heat pump control method.

In another exemplary embodiment, a computer readable storage medium comprising program instructions which, when executed by a processor, implement the steps of the heat pump control method described above is also provided. For example, the computer readable storage medium may be the memory 302 described above including program instructions executable by the processor 301 of the electronic device 300 to perform the heat pump control method described above.

The present disclosure also provides a vehicle including a heat pump and the heat pump control device 200 provided by the present disclosure.

The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, various possible combinations will not be separately described in this disclosure.

In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.

Claims

1. A heat pump control method, characterized in that the method comprises:

acquiring state information of a plurality of reference factors;

2. The method of claim 1, wherein the plurality of reference factors includes ambient temperature, battery demand, dehumidification demand, and occupant demand.

3. The method of claim 2, wherein calculating the serial number of the current operating condition in the predetermined table according to the current grade of each reference factor comprises:

S＝mBCD+nCD+pD+q

4. The method of claim 2, wherein calculating the serial number of the current operating condition in the predetermined table according to the current grade of each reference factor comprises:

T＝nCD+pD+q

5. The method according to claim 2, wherein determining the current optional operation mode of the heat pump according to the searched array of optional modes comprises:

6. The method of claim 5, wherein the array of selectable patterns is hexadecimal.

7. A heat pump control apparatus, characterized in that the apparatus comprises:

8. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 6.

9. An electronic device, comprising:

a memory having a computer program stored thereon;

a processor for executing the computer program in the memory to carry out the steps of the method of any one of claims 1 to 6.

10. A vehicle characterized by comprising a heat pump and the heat pump control apparatus according to claim 7.