Charging cooling control method, system and equipment based on air conditioner control module and storage medium

Abstract

The invention discloses a charging cooling control method, system and equipment based on an air conditioner control module and a storage medium, and belongs to the technical field of new energy automobile charging. The method comprises the following steps: acquiring charging parameters when a target vehicle is charged, and identifying a charging mode of the target vehicle by a battery management system according to the charging parameters; when the battery management system recognizes that the charging mode is quick charging, the battery management system obtains the charging state of the battery pack; when the charging state of the battery pack is abnormal, the battery management system obtains the temperature of the battery pack and sends the temperature to the whole vehicle control unit; if the working temperature of the battery pack is larger than the first preset temperature, the whole vehicle control unit sends a regulation and control instruction to an air conditioner control module of the target vehicle, and the air conditioner control module adjusts a battery pack-passenger compartment refrigerating circuit according to the regulation and control instruction to achieve cooling enhancement of the battery pack; the charging state and the temperature of the battery pack are monitored in real time, and the refrigerating circuit is adjusted when necessary, so that the battery pack is cooled.

Description

Technical Field

[0001] The present application belongs to the field of new energy vehicle charging, and specifically relates to a charging cooling control method, system, device and storage medium based on an air conditioning control module. Background Art

[0002] With the rapid development of new energy vehicles in my country and the upgrading of automobile product consumption, consumers have put forward higher requirements for the reliability and convenience of new energy vehicles. The construction of high-power charging stations for new energy vehicles is increasing, and the power of charging modules is also getting higher and higher. Therefore, the cooling of the battery pack and the cooling of the cockpit during fast charging increase the load of the air-conditioning electric compressor; therefore, in the development stage of the car, it is very important to adopt a suitable air-conditioning control strategy to cool the battery pack of new energy vehicles and increase the life of the electric compressor and air-conditioning pipe;

[0003] New energy vehicles in the prior art do not restrict the cooling of the passenger compartment during fast charging. This means that if the cooling of the passenger compartment is turned on during fast charging, the load on the electric compressor will be greatly increased, causing the exhaust temperature of the electric compressor to be too high, reducing the cooling effect of the compressor, and even damaging the compressor; resulting in reduced cooling effect of the battery pack, rapid heating of the battery pack, and thus reducing the service life of the battery pack. Summary of the invention

[0004] The purpose of the embodiments of the present application is to provide a charging cooling control method, system, device and storage medium based on an air-conditioning control module, which can solve the technical problem in the prior art that when new energy vehicles are fast charged, the cooling of the passenger compartment is turned on, which easily causes the battery pack to heat up rapidly.

[0005] In order to solve the above technical problems, this application is implemented as follows:

[0006] In a first aspect, an embodiment of the present application provides a charging cooling control method based on an air conditioning control module, the method comprising:

[0007] Acquiring charging parameters of the target vehicle when it is charged, wherein the battery management system of the target vehicle identifies a charging mode of the target vehicle according to the charging parameters;

[0008] When the battery management system identifies that the charging mode is fast charging, the battery management system obtains the charging state of the battery pack;

[0009] When the charging state of the battery pack is abnormal, the battery management system obtains the battery pack temperature and sends the battery pack temperature to the vehicle control unit;

[0010] If the operating temperature of the battery pack is greater than the first preset temperature, the vehicle control unit sends a control instruction to the air-conditioning control module of the target vehicle, and the air-conditioning control module adjusts the battery pack-passenger compartment refrigeration circuit according to the control instruction to enhance the cooling of the battery pack.

[0011] As an optional implementation of the first aspect of the present application, if the operating temperature of the battery pack is greater than the first preset temperature, the vehicle control unit sends a control instruction to the air conditioning control module of the target vehicle, and the air conditioning control module adjusts the battery pack-passenger compartment refrigeration circuit according to the control instruction, specifically:

[0012] If the operating temperature of the battery pack is greater than a first preset value and less than or equal to a second preset value, the vehicle controller sends a passenger compartment cooling restriction request instruction to the air conditioning control module of the target vehicle, and the air conditioning control module controls the battery pack-passenger compartment cooling circuit to restrict the passenger compartment cooling and enhance the cooling of the battery pack according to the restriction request instruction;

[0013] If the battery pack temperature is greater than a second preset value, the vehicle controller sends a passenger compartment cooling shutdown request instruction to the air-conditioning control module of the target vehicle, and the air-conditioning control module controls the battery pack-passenger compartment refrigeration circuit to shut down the passenger compartment refrigeration according to the shutdown request instruction, and the battery pack receives all the cooling in the battery pack-passenger compartment refrigeration circuit.

[0014] According to the above optional implementation mode, by dividing the battery pack operating temperature into two intervals and adopting different cooling strategies respectively, the cooling process of the battery pack can be controlled more finely to avoid overcooling or insufficient cooling; when the battery pack temperature is high, by limiting or shutting down the passenger compartment cooling, it is ensured that the battery pack has sufficient cooling resources to reduce the risk of failure or damage due to overheating; when the battery pack temperature is not particularly high, by limiting the passenger compartment cooling instead of completely shutting it down, the temperature in the passenger compartment can be kept suitable to a certain extent; this method realizes the intelligent and automated management of the battery pack cooling process by integrating the vehicle controller and the air-conditioning control module, and can automatically adjust the cooling strategy according to the battery pack temperature without human intervention; by reasonably allocating cooling resources, it can be ensured that when the battery pack needs emergency cooling, the system can respond quickly and put into full cooling capacity, thereby improving the overall efficiency of the system.

[0015] As an optional implementation manner of the first aspect of the present application, the air conditioning control module controls the battery pack-passenger compartment refrigeration circuit to limit the refrigeration of the passenger compartment and enhance the refrigeration of the battery pack, specifically:

[0016] The air conditioning control module calculates the valve closing degree according to the battery pack temperature, and controls the valve size of the passenger compartment cooling branch in the battery pack-passenger compartment refrigeration circuit according to the valve closing degree calculation result;

[0017] The air conditioning control module controls the battery pack-passenger compartment refrigeration circuit to turn off the passenger compartment refrigeration according to the shutdown request instruction, specifically:

[0018] The air conditioning control module controls the battery pack-passenger compartment refrigeration circuit to close a valve of a passenger compartment cooling branch in the battery pack-passenger compartment refrigeration circuit.

[0019] According to the above optional implementation, by accurately calculating the valve closing degree according to the battery pack temperature, the air conditioning control module can achieve accurate control of the passenger compartment cooling limit; this helps to ensure the safety of the battery pack while minimizing the impact on the comfort of the passenger compartment; when the battery pack temperature reaches a dangerous level, the air conditioning control module can quickly close the valve of the passenger compartment cooling branch and devote all the cooling capacity to the cooling of the battery pack; this rapid response helps to prevent the battery pack from malfunctioning or being damaged due to overheating, and can effectively prevent the battery pack and the passenger compartment from being overloaded due to high-intensity cooling at the same time, which ultimately causes damage to the compressor; by accurately controlling the valve closing degree and quickly responding to changes in the battery pack temperature, the system can more effectively utilize cooling resources; this helps to improve the overall efficiency of the system and reduce energy consumption; the intelligent management method not only improves the automation level of the system, but also reduces the need for manual intervention; although the system will turn off the passenger compartment cooling when the battery pack temperature is too high, by accurately controlling the valve closing degree and limiting the passenger compartment cooling when the battery pack temperature is not particularly high instead of completely shutting it down, the system can maintain a suitable temperature in the passenger compartment to a certain extent, thereby optimizing the user experience.

[0020] As an optional implementation of the first aspect of the present application, the valve closing degree calculation is specifically:

[0021] Valve closing degree = battery pack temperature × 100% / (second preset temperature - first preset temperature);

[0022] The target temperature is divided by the difference between the second preset temperature and the first preset temperature and then multiplied by 100% to obtain the valve closing ratio. The greater the valve closing degree, the greater the degree of valve closing, the greater the restriction on the cooling of the passenger compartment, and thus the greater the cooling of the battery pack.

[0023] According to the above optional implementation, by calculating the valve closing degree through the above formula, the air conditioning control module can adjust the valve size in real time according to the change of battery pack temperature, so as to achieve accurate and dynamic control of the passenger compartment cooling limit; this control method helps to ensure the safety of the battery pack while minimizing the impact on the comfort of the passenger compartment; by accurately calculating the valve closing degree and dynamically adjusting the valve size, the system can use the cooling resources more effectively. This helps to improve the overall efficiency of the system and reduce energy consumption; when the battery pack temperature reaches a dangerous level, the air conditioning control module can quickly close the valve of the passenger compartment cooling branch and devote all the cooling capacity to the cooling of the battery pack; this rapid response helps to prevent the battery pack from malfunctioning or being damaged due to overheating, and improve the safety of the system.

[0024] As an optional implementation of the first aspect of the present application, the charging parameters include an on-board charger voltage and an on-board charger current.

[0025] As an optional implementation of the first aspect of the present application, the battery pack temperature is acquired in real time by a temperature sensor provided in the battery pack circuit of the target vehicle.

[0026] According to the above optional implementation, by setting a temperature sensor in the battery pack loop, the system can monitor the temperature of the battery pack in real time and respond quickly according to the temperature data to ensure the safe operation of the battery pack; combined with the data provided by the temperature sensor, the system can achieve accurate and dynamic control of the battery pack cooling and charging process, optimize resource utilization and reduce energy.

[0027] As an optional implementation manner of the first aspect of the present application, the first preset temperature is 32.5°C, and the second preset temperature is 50°C.

[0028] In a second aspect, an embodiment of the present application provides a charging cooling control system based on an air conditioning control module, the system comprising:

[0029] The first acquisition module is used to obtain the on-board charger voltage, on-board charger current and battery pack temperature of the target vehicle when charging;

[0030] A first identification module, identifying whether the target vehicle is in a fast charging mode according to the voltage and the current acquired by the first acquisition module;

[0031] a first judgment module, wherein when the first identification module identifies that the target vehicle is in a fast charging mode, the battery pack temperature obtained by the first acquisition module is compared with a first preset temperature and a second preset temperature;

[0032] a first processing module, wherein if the operating temperature of the battery pack is greater than a first preset value and less than or equal to a second preset value, the closure degree of the passenger compartment cooling valve is calculated according to a preset valve closure degree calculation formula, and a passenger compartment cooling restriction instruction is sent to an air conditioning control module of the target vehicle according to the closure degree of the passenger compartment cooling valve;

[0033] A second processing module, when the battery pack temperature is greater than a second preset value, sends a passenger compartment cooling shut-off instruction to an air conditioning control module of the target vehicle;

[0034] The output execution module is used to output instructions for executing the first processing module and the second processing module.

[0035] According to the second aspect of the present application, a charging cooling control system based on an air conditioning control module is provided. By real-time monitoring of the battery pack temperature and adjusting the passenger compartment cooling according to the temperature conditions, the battery pack is effectively prevented from malfunctioning or being damaged due to overheating, thereby improving the safety of the charging process. In the fast charging mode, by limiting or shutting down the passenger compartment cooling, more cooling capacity is allocated to the battery pack, which helps to reduce the battery pack temperature and thus improve the charging efficiency. The system can automatically adjust the opening of the passenger compartment cooling valve according to real-time data such as the battery pack temperature and the charging mode, thereby realizing intelligent management and improving the automation level of the system. Although the system will limit or shut down the passenger compartment cooling when the battery pack temperature is too high, through precise calculation and control, the system can maintain a comfortable temperature in the passenger compartment in most cases and reduce the impact on the user experience. At the same time, when the battery pack temperature is normal, the system can provide passenger compartment cooling normally to ensure the user's comfortable experience. By precisely controlling the opening of the passenger compartment cooling valve, the system can more effectively utilize cooling resources, reduce unnecessary energy consumption, and reduce operating costs.

[0036] In a third aspect, an embodiment of the present application provides an electronic device, which includes a processor, a memory, and a program or instruction stored in the memory and executable on the processor, wherein the program or instruction, when executed by the processor, implements the steps of the method described in the first aspect.

[0037] In a fourth aspect, an embodiment of the present application provides a readable storage medium, on which a program or instruction is stored, and when the program or instruction is executed by a processor, the steps of the method described in the first aspect are implemented.

[0038] In an embodiment of the present application, by real-time monitoring of the charging state and temperature of the battery pack and adjusting the refrigeration circuit when necessary, when the refrigeration of the passenger compartment is turned on, the battery management system identifies the temperature of the battery pack and imposes certain restrictions on the passenger compartment in the refrigeration circuit according to the temperature of the battery pack, so that more refrigeration in the refrigeration circuit is used to cool the battery pack, avoiding high-intensity refrigeration of the battery pack and the passenger compartment at the same time, increasing the load of the electric compressor, causing the exhaust temperature of the electric compressor to be too high, reducing the refrigeration effect of the compressor, and even damaging the compressor. It can effectively prevent the battery pack from malfunctioning or being damaged due to overheating, thereby improving the safety of the charging process; and can slow down the aging rate of the battery pack and extend the service life of the battery; in fast charging mode, by timely cooling the battery pack, the charging efficiency of the battery pack can be maintained to avoid a decrease in charging speed due to overheating; this method realizes intelligent management of the battery pack charging and cooling process by integrating the battery management system, the vehicle control unit and the air-conditioning control module, thereby improving the overall performance and reliability of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 This is a flow chart of a charging cooling control method based on an air conditioning control module provided in some embodiments of the present application. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0041] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here. In addition, the "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally represents that the objects associated with each other are in an "or" relationship.

[0042] In conjunction with the accompanying drawings, a charging cooling control method, system, device and storage medium based on an air conditioning control module provided by an embodiment of the present application are described in detail through specific embodiments and their application scenarios.

[0043] A charging cooling control method based on an air conditioning control module comprises the following steps:

[0044] S100: acquiring charging parameters of the target vehicle when it is charging, and the battery management system of the target vehicle identifies the charging mode of the target vehicle according to the charging parameters;

[0045] Furthermore, the charging parameters include an on-board charger voltage and an on-board charger current.

[0046] It should be understood that, based on the above-mentioned feature definition, the on-board charger voltage and the on-board charger current can intuitively reflect the charging speed of the vehicle, thereby determining the charging mode according to the charging speed of the vehicle.

[0047] S200: When the battery management system identifies that the charging mode is fast charging, the battery management system obtains the charging status of the battery pack;

[0048] S300: When the battery pack charging state is abnormal, the battery management system obtains the battery pack temperature and sends the battery pack temperature to the vehicle control unit;

[0049] Furthermore, the battery pack temperature is acquired in real time through a temperature sensor provided in the battery pack circuit of the target vehicle.

[0050] It should be understood that, based on the above-mentioned feature definitions, by setting a temperature sensor in the battery pack circuit, the system can monitor the temperature of the battery pack in real time and respond quickly according to the temperature data to ensure the safe operation of the battery pack; combined with the data provided by the temperature sensor, the system can achieve accurate and dynamic control of the battery pack cooling and charging process, optimize resource utilization and reduce energy.

[0051] S400: If the operating temperature of the battery pack is greater than the first preset temperature, the vehicle control unit sends a control instruction to the air conditioning control module, and the air conditioning control module adjusts the battery pack-passenger compartment refrigeration circuit according to the control instruction to achieve enhanced cooling of the battery pack;

[0052] Furthermore, S400 is specifically:

[0053] If the operating temperature of the battery pack is greater than the first preset value and less than or equal to the second preset value, the vehicle controller sends a passenger compartment cooling restriction request instruction to the air conditioning control module of the target vehicle, and the air conditioning control module controls the battery pack-passenger compartment cooling circuit to restrict the passenger compartment cooling according to the restriction request instruction and enhance the cooling of the battery pack;

[0054] If the battery pack temperature is greater than a second preset value, the vehicle controller sends a passenger compartment refrigeration shutdown request instruction to the air conditioning control module of the target vehicle, and the air conditioning control module controls the battery pack-passenger compartment refrigeration circuit to shut down the passenger compartment refrigeration according to the shutdown request instruction, and the battery pack receives all the refrigeration in the battery pack-passenger compartment refrigeration circuit;

[0055] Specifically, the first preset temperature is 32.5°C, and the second preset temperature is 50°C.

[0056] It should be understood that, based on the above-mentioned feature definition, if the operating temperature of the battery pack is greater than the first preset value (32.5°C) and less than or equal to the second preset value (50°C), it means that the battery pack temperature is high but still within the controllable range, and the cooling of the battery pack needs to be prioritized; at this time, the vehicle controller sends a passenger compartment cooling limit request instruction to the air-conditioning control module; after receiving the passenger compartment cooling limit request instruction, the air-conditioning control module adjusts the battery pack-passenger compartment refrigeration circuit to limit the cooling capacity of the passenger compartment, and allocates more cooling capacity to the battery pack to achieve enhanced cooling of the battery pack; if the battery pack temperature is greater than the second preset value (50°C), it means that the battery pack temperature is extremely high and emergency cooling is required immediately; at this time, the vehicle controller sends a passenger compartment cooling shutdown request instruction to the air-conditioning control module; after receiving the passenger compartment cooling shutdown request instruction, the air-conditioning control module completely shuts down the cooling function of the passenger compartment, and allocates all cooling capacity in the battery pack-passenger compartment refrigeration circuit to the battery pack for rapid cooling.

[0057] It should be noted that by dividing the battery pack operating temperature into two intervals and adopting different cooling strategies respectively, the cooling process of the battery pack can be controlled more finely to avoid overcooling or insufficient cooling; when the battery pack temperature is high, by limiting or shutting down the passenger compartment cooling, it is ensured that the battery pack has sufficient cooling resources to reduce the risk of failure or damage due to overheating; when the battery pack temperature is not particularly high, by limiting the passenger compartment cooling instead of completely shutting it down, the temperature in the passenger compartment can be kept appropriate to a certain extent; this method realizes the intelligent and automated management of the battery pack cooling process by integrating the vehicle controller and the air-conditioning control module, and can automatically adjust the cooling strategy according to the battery pack temperature without human intervention; by reasonably allocating cooling resources, it can ensure that when the battery pack needs emergency cooling, the system can respond quickly and put into full cooling capacity, thereby improving the overall efficiency of the system.

[0058] Furthermore, the air conditioning control module controls the battery pack-passenger compartment refrigeration circuit to limit the refrigeration of the passenger compartment and enhance the refrigeration of the battery pack, specifically:

[0059] The air conditioning control module calculates the valve closing degree according to the battery pack temperature, and controls the valve size of the passenger compartment cooling branch in the battery pack-passenger compartment refrigeration circuit according to the valve closing degree calculation result;

[0060] The air conditioning control module controls the battery pack-passenger compartment refrigeration circuit to shut down the passenger compartment refrigeration according to the shutdown request instruction, specifically:

[0061] The air conditioning control module controls the battery pack-passenger compartment refrigeration circuit to close the valve of the passenger compartment cooling branch in the battery pack-passenger compartment refrigeration circuit.

[0062] It should be understood that, based on the above-mentioned characteristic definition, when the operating temperature of the battery pack is between the first preset value and the second preset value, the vehicle controller will send a passenger compartment cooling limit request instruction to the air conditioning control module; after receiving this instruction, the air conditioning control module will calculate the valve closing degree according to the current battery pack temperature; the purpose is to determine to what extent the passenger compartment cooling branch valve should be closed, so as to ensure that the battery pack is sufficiently cooled while minimizing the impact on the passenger compartment cooling; according to the calculated valve closing degree, the air conditioning control module will adjust the valve size of the passenger compartment cooling branch in the battery pack-passenger compartment cooling circuit to limit the passenger compartment cooling and enhance the cooling effect of the battery pack; when the battery pack temperature exceeds the second preset value, the vehicle controller will send a passenger compartment cooling close request instruction to the air conditioning control module; after receiving this instruction, the air conditioning control module will immediately take measures to close the valve of the passenger compartment cooling branch in the battery pack-passenger compartment cooling circuit. This means that at this time the system will no longer provide cooling services to the passenger compartment, and all cooling capacity will be concentrated on cooling the battery pack.

[0063] It should be noted that by accurately calculating the valve closing degree according to the battery pack temperature, the air conditioning control module can achieve precise control of the passenger compartment cooling limit; this helps to ensure the safety of the battery pack while minimizing the impact on the comfort of the passenger compartment; when the battery pack temperature reaches a dangerous level, the air conditioning control module can quickly close the valve of the passenger compartment cooling branch and devote all cooling capacity to the cooling of the battery pack; this rapid response helps prevent the battery pack from malfunctioning or being damaged due to overheating, and can effectively prevent the battery pack and the passenger compartment from being overloaded due to high-intensity cooling at the same time, which ultimately leads to compressor damage; by accurately controlling the valve closing degree and quickly responding to changes in the battery pack temperature, the system can more effectively utilize cooling resources; this helps to improve the overall efficiency of the system and reduce energy consumption; the intelligent management method not only improves the automation level of the system, but also reduces the need for manual intervention; although the system will turn off the passenger compartment cooling when the battery pack temperature is too high, by accurately controlling the valve closing degree and limiting the passenger compartment cooling when the battery pack temperature is not particularly high instead of completely shutting it down, the system can maintain a suitable temperature in the passenger compartment to a certain extent, thereby optimizing the user experience.

[0064] Furthermore, the valve closing degree is calculated as follows:

[0065] Valve closing degree = battery pack temperature × 100% / (second preset temperature - first preset temperature);

[0066] Divide the target temperature by the difference between the second preset temperature and the first preset temperature, and then multiply by 100% to get the valve closing ratio. The greater the valve closing degree, the greater the degree of valve closure, which means the greater the restriction on passenger compartment cooling, and thus the greater the cooling of the battery pack.

[0067] It should be understood that, based on the above-mentioned characteristic definition, when the operating temperature of the battery pack is between the first preset value and the second preset value, in order to limit the cooling of the passenger compartment and enhance the cooling effect of the battery pack, the air conditioning control module will calculate the valve closing degree according to the current battery pack temperature; the specific calculation formula is: valve closing degree = battery pack temperature × 100% / (second preset temperature - first preset temperature);

[0068] This formula means that the valve closing degree is a percentage of the difference between the battery pack temperature and the first preset temperature and the second preset temperature; the calculation result of the valve closing degree will be directly used to control the valve size of the passenger compartment cooling branch in the battery pack-passenger compartment refrigeration circuit; the larger the valve closing degree, the greater the valve closure degree, the less cooling the passenger compartment obtains, and the more enhanced cooling for the battery pack; based on the calculated valve closing degree, the air conditioning control module will adjust the valve of the passenger compartment cooling branch in the battery pack-passenger compartment refrigeration circuit to limit the cooling of the passenger compartment; if the battery pack temperature continues to rise and exceeds the second preset value, the air conditioning control module will completely close the valve of the passenger compartment cooling branch and concentrate all cooling capacity on cooling the battery pack.

[0069] It should be noted that by calculating the valve closing degree through the above formula, the air conditioning control module can adjust the valve size in real time according to the change of battery pack temperature, and realize accurate and dynamic control of the passenger compartment cooling limit; this control method helps to ensure the safety of the battery pack while minimizing the impact on the comfort of the passenger compartment; by accurately calculating the valve closing degree and dynamically adjusting the valve size, the system can use cooling resources more effectively. This helps to improve the overall efficiency of the system and reduce energy consumption; when the battery pack temperature reaches a dangerous level, the air conditioning control module can quickly close the valve of the passenger compartment cooling branch and devote all cooling capacity to the cooling of the battery pack; this rapid response helps prevent the battery pack from malfunctioning or being damaged due to overheating, and improves the safety of the system.

[0070] Furthermore, in S200, if the battery management system identifies that the charging mode is not fast charging, the battery management system does not obtain the charging status of the battery pack; in S300, if the charging status of the battery pack is normal, the battery management system does not obtain the battery pack temperature; in S400, if the battery pack temperature is less than the first preset value, the vehicle control unit does not send a control instruction to the air-conditioning control module.

[0071] According to a charging cooling control method based on an air conditioning control module provided in this embodiment, when the target vehicle starts charging, firstly, parameters related to charging are obtained through sensors or communication interfaces, and these parameters include charging current and charging voltage; the battery management system of the target vehicle receives these charging parameters and identifies the charging mode of the vehicle based on these parameters; the charging mode is divided into conventional charging and fast charging. If the battery management system identifies that the current charging mode is fast charging, the charging status information of the battery pack is further obtained; this includes the power of the battery pack, the charging rate, and whether there is any abnormal state (such as overheating); the battery management system analyzes the charging state of the battery pack, and if it is found that If there is an abnormal state (such as abnormal temperature rise), the battery pack temperature is obtained. When the battery pack charging state is abnormal, the battery management system obtains the current temperature of the battery pack; the battery management system sends the temperature information of the battery pack to the vehicle controller; the vehicle controller receives the battery pack temperature information and compares it with a preset first preset temperature; if the operating temperature of the battery pack is greater than the first preset temperature, it is considered that the battery pack requires additional cooling; the vehicle controller sends a control instruction to the air-conditioning control module of the target vehicle, requesting adjustment of the battery pack-passenger compartment refrigeration circuit; the air-conditioning control module adjusts the refrigeration circuit of the battery pack and the passenger compartment according to the received control instruction to increase the cooling effect on the battery pack.

[0072] By monitoring the charging status and temperature of the battery pack in real time and adjusting the refrigeration circuit when necessary, when the refrigeration of the passenger compartment is turned on, the battery management system identifies the temperature of the battery pack and imposes certain restrictions on the passenger compartment in the refrigeration circuit according to the temperature of the battery pack, so that more refrigeration in the refrigeration circuit is used to cool the battery pack, avoiding high-intensity refrigeration of the battery pack and the passenger compartment at the same time, increasing the load of the electric compressor, causing the exhaust temperature of the electric compressor to be too high, reducing the refrigeration effect of the compressor, and even damaging the compressor. It can effectively prevent the battery pack from malfunctioning or being damaged due to overheating, thereby improving the safety of the charging process; and can slow down the aging of the battery pack and extend the service life of the battery; in fast charging mode, by timely cooling the battery pack, the charging efficiency of the battery pack can be maintained to avoid a decrease in charging speed due to overheating; this method realizes intelligent management of the battery pack charging and cooling process by integrating the battery management system, the vehicle control unit and the air-conditioning control module, thereby improving the overall performance and reliability of the vehicle.

[0073] It should be noted that the charging cooling control method based on the air conditioning control module provided in the embodiment of the present application can be executed by a charging cooling control system based on the air conditioning control module, or, or, a control module in the charging cooling control system based on the air conditioning control module for executing a method for loading a charging cooling control system based on the air conditioning control module. In the embodiment of the present application, a charging cooling control system based on the air conditioning control module is used to execute loading a charging cooling control method based on the air conditioning control module as an example to illustrate a charging cooling control method based on the air conditioning control module provided in the embodiment of the present application.

[0074] A charging cooling control system based on an air conditioning control module, comprising:

[0075] The first acquisition module is used to obtain the on-board charger voltage, on-board charger current and battery pack temperature of the target vehicle when charging;

[0076] a first identification module, for identifying whether the target vehicle is in a fast charging mode according to the voltage and current acquired by the first acquisition module;

[0077] The first judgment module, when the first identification module identifies that the target vehicle is in the fast charging mode, compares the battery pack temperature obtained by the first acquisition module with the first preset temperature and the second preset temperature;

[0078] The first processing module calculates the closing degree of the passenger compartment cooling valve according to a preset valve closing degree calculation formula if the operating temperature of the battery pack is greater than a first preset value and less than or equal to a second preset value, and sends a passenger compartment cooling restriction instruction to an air conditioning control module of a target vehicle according to the closing degree of the passenger compartment cooling valve;

[0079] The second processing module sends a passenger compartment cooling shut-off instruction to the air conditioning control module of the target vehicle when the battery pack temperature is greater than a second preset value;

[0080] The output execution module is used to output the instructions for executing the first processing module and the second processing module.

[0081] According to a charging cooling control system based on an air conditioning control module provided in this embodiment, the first acquisition module acquires in real time the on-board charger voltage, on-board charger current and battery pack temperature of the target vehicle during the charging process; the first identification module identifies whether the target vehicle is in a fast charging mode based on the acquired on-board charger voltage and current, which is usually achieved by comparing whether the voltage and current values ​​exceed a preset fast charging threshold; after identifying that the target vehicle is in a fast charging mode, the first judgment module compares the battery pack temperature with a preset first preset temperature and a second preset temperature; if the battery pack operating temperature is greater than the first preset value and less than or equal to the second preset value, it means that the battery pack temperature is high but has not reached a dangerous level, and at this time it is necessary to limit the cooling of the passenger compartment to give priority to cooling the battery pack. battery pack; calculate the degree of closure of the passenger compartment refrigeration valve according to the preset valve closure degree calculation formula (valve closure degree = battery pack temperature × 100% / (second preset temperature - first preset temperature)); send a passenger compartment refrigeration restriction instruction to the air-conditioning control module, and adjust the opening of the passenger compartment refrigeration valve according to the calculated valve closure degree; if the battery pack temperature is greater than the second preset value, it means that the battery pack temperature has reached or exceeded the dangerous level. At this time, it is necessary to immediately shut down the passenger compartment refrigeration to fully cool the battery pack; send a passenger compartment refrigeration shutdown instruction to the air-conditioning control module to completely close the passenger compartment refrigeration valve; finally, the output execution module is responsible for outputting and executing the instructions of the first processing module and the second processing module to ensure that the air-conditioning control module can adjust the opening of the passenger compartment refrigeration valve as required.

[0082] In the embodiment of the present application, a charging and cooling control system based on an air conditioning control module can be a system, or a component, an integrated circuit, or a chip in a terminal. The device can be a mobile electronic device or a non-mobile electronic device. Exemplarily, the mobile electronic device can be a mobile phone, a tablet computer, a laptop computer, a PDA, an in-vehicle electronic device, a wearable device, an ultra-mobile personal computer (UMPC), a netbook, or a personal digital assistant (PDA), etc. The non-mobile electronic device can be a server, a network attached storage (NAS), a personal computer (PC), etc., which is not specifically limited in the embodiment of the present application.

[0083] In the embodiment of the present application, a charging cooling control system based on an air conditioning control module may be a device having an operating system. The operating system may be an Android operating system, an iOS operating system, or other possible operating systems, which are not specifically limited in the embodiment of the present application.

[0084] The charging cooling control system based on the air conditioning control module provided in the embodiment of the present application can achieve Figure 1 In the method embodiment, each process of implementing a charging cooling control method based on an air conditioning control module is not described again here to avoid repetition.

[0085] According to a charging cooling control system based on an air conditioning control module provided in an embodiment, by real-time monitoring of the battery pack temperature and adjusting the passenger compartment cooling according to the temperature conditions, the battery pack is effectively prevented from malfunctioning or being damaged due to overheating, thereby improving the safety of the charging process; in the fast charging mode, by limiting or turning off the passenger compartment cooling, more cooling capacity is allocated to the battery pack, which helps to reduce the battery pack temperature and thus improve the charging efficiency; the system can automatically adjust the opening of the passenger compartment cooling valve according to real-time data such as the battery pack temperature and the charging mode, realize intelligent management, and improve the automation level of the system; although the system will limit or turn off the passenger compartment cooling when the battery pack temperature is too high, through precise calculation and control, the system can maintain a comfortable temperature in the passenger compartment in most cases, reducing the impact on user experience; at the same time, when the battery pack temperature is normal, the system can normally provide passenger compartment cooling to ensure the user's comfortable experience; by accurately controlling the opening of the passenger compartment cooling valve, the system can more effectively utilize cooling resources, reduce unnecessary energy consumption, and reduce operating costs.

[0086] Optionally, an embodiment of the present application also provides an electronic device, including a processor, a memory, and a program or instruction stored in the memory and executable on the processor. When the program or instruction is executed by the processor, each process of the above-mentioned charging cooling control method embodiment based on the air-conditioning control module is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0087] An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, each process of the above-mentioned charging cooling control method embodiment based on the air-conditioning control module is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0088] The processor is the processor in the electronic device in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a computer read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0089] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise one..." do not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0090] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, a magnetic disk, or an optical disk), and includes a number of instructions for a terminal (which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to execute the methods described in each embodiment of the present application.

[0091] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A charging cooling control method based on an air conditioning control module, characterized in that: The method comprises: Acquiring charging parameters of the target vehicle when it is charged, wherein the battery management system of the target vehicle identifies a charging mode of the target vehicle according to the charging parameters; When the battery management system identifies that the charging mode is fast charging, the battery management system obtains the charging state of the battery pack; When the charging state of the battery pack is abnormal, the battery management system obtains the battery pack temperature and sends the battery pack temperature to the vehicle control unit; If the operating temperature of the battery pack is greater than the first preset temperature, the vehicle control unit sends a control instruction to the air-conditioning control module of the target vehicle, and the air-conditioning control module adjusts the battery pack-passenger compartment refrigeration circuit according to the control instruction to enhance the cooling of the battery pack.

2. A charging cooling control method based on an air conditioning control module according to claim 1, characterized in that: If the operating temperature of the battery pack is greater than the first preset temperature, the vehicle control unit sends a control instruction to the air conditioning control module of the target vehicle, and the air conditioning control module adjusts the battery pack-passenger compartment refrigeration circuit according to the control instruction, specifically: If the operating temperature of the battery pack is greater than a first preset value and less than or equal to a second preset value, the vehicle controller sends a passenger compartment cooling restriction request instruction to the air conditioning control module of the target vehicle, and the air conditioning control module controls the battery pack-passenger compartment cooling circuit to restrict the passenger compartment cooling and enhance the cooling of the battery pack according to the restriction request instruction; If the battery pack temperature is greater than a second preset value, the vehicle controller sends a passenger compartment cooling shutdown request instruction to the air-conditioning control module of the target vehicle, and the air-conditioning control module controls the battery pack-passenger compartment refrigeration circuit to shut down the passenger compartment refrigeration according to the shutdown request instruction, and the battery pack receives all the cooling in the battery pack-passenger compartment refrigeration circuit.

3. The charging cooling control method based on the air conditioning control module according to claim 2 is characterized in that: The air conditioning control module controls the battery pack-passenger compartment refrigeration circuit to limit the refrigeration of the passenger compartment and enhance the refrigeration of the battery pack, specifically: The air conditioning control module calculates the valve closing degree according to the battery pack temperature, and controls the valve size of the passenger compartment cooling branch in the battery pack-passenger compartment refrigeration circuit according to the valve closing degree calculation result; The air conditioning control module controls the battery pack-passenger compartment refrigeration circuit to turn off the passenger compartment refrigeration according to the shutdown request instruction, specifically: The air conditioning control module controls the battery pack-passenger compartment refrigeration circuit to close a valve of a passenger compartment cooling branch in the battery pack-passenger compartment refrigeration circuit.

4. The charging cooling control method based on the air conditioning control module according to claim 3 is characterized in that: The valve closing degree calculation is specifically as follows: Valve closing degree = battery pack temperature × 100% / (second preset temperature - first preset temperature); The target temperature is divided by the difference between the second preset temperature and the first preset temperature and then multiplied by 100% to obtain the valve closing ratio. The greater the valve closing degree, the greater the degree of valve closing, the greater the restriction on the cooling of the passenger compartment, and thus the greater the cooling of the battery pack.

5. The charging cooling control method based on the air conditioning control module according to claim 1, characterized in that: The charging parameters include an on-board charger voltage and an on-board charger current.

6. The charging cooling control method based on the air conditioning control module according to claim 1, characterized in that: The battery pack temperature is acquired in real time through a temperature sensor provided in the battery pack circuit of the target vehicle.

7. The charging cooling control method based on the air conditioning control module according to claim 4 is characterized in that: The first preset temperature is 32.5°C, and the second preset temperature is 50°C.

8. A charging cooling control system based on an air conditioning control module, capable of implementing a charging cooling control method based on an air conditioning control module as described in any one of claims 1 to 7, characterized in that: The system comprises: The first acquisition module is used to obtain the on-board charger voltage, on-board charger current and battery pack temperature of the target vehicle when charging; A first identification module, identifying whether the target vehicle is in a fast charging mode according to the voltage and the current acquired by the first acquisition module; a first judgment module, wherein when the first identification module identifies that the target vehicle is in a fast charging mode, the battery pack temperature obtained by the first acquisition module is compared with a first preset temperature and a second preset temperature; a first processing module, wherein if the operating temperature of the battery pack is greater than a first preset value and less than or equal to a second preset value, the closure degree of the passenger compartment cooling valve is calculated according to a preset valve closure degree calculation formula, and a passenger compartment cooling restriction instruction is sent to an air conditioning control module of the target vehicle according to the closure degree of the passenger compartment cooling valve; A second processing module, when the battery pack temperature is greater than a second preset value, sends a passenger compartment cooling shut-off instruction to an air conditioning control module of the target vehicle; The output execution module is used to output instructions for executing the first processing module and the second processing module.

9. An electronic device, characterized in that: It includes a processor, a memory, and a program or instruction stored in the memory and executable on the processor. When the program or instruction is executed by the processor, the steps of a charging cooling control method based on an air conditioning control module as described in claims 1-7 are implemented.

10. A readable storage medium, characterized in that: The readable storage medium stores a program or instruction, and when the program or instruction is executed by the processor, the steps of the charging cooling control method based on the air conditioning control module as described in claims 1-7 are implemented.

Images