Pure electric vehicle battery heating method, device, computer equipment and storage medium

Abstract

The present application relates to a pure electric vehicle battery heating method, device, computer equipment, storage medium and computer program product. The method includes: obtaining the current remaining capacity of the vehicle battery at the current moment and the time of the vehicle to be used in real time, and determining in real time the required charging time to charge the current remaining capacity to the rated capacity of the vehicle battery under the condition that the pure electric vehicle charging pile is configured with the first charging current; judging in real time whether the required charging time is less than the interval time; if less than, controlling the pure electric vehicle charging pile to charge the vehicle battery with the second charging current; if not less than, controlling the pure electric vehicle charging pile to charge the vehicle battery with the first charging current until the time of the vehicle to be used is reached, and detecting the temperature of the vehicle battery in real time, if the temperature of the vehicle battery is greater than the first preset temperature, then reducing the temperature of the vehicle battery to a preset temperature range. Thereby, the temperature of the vehicle battery is within the optimal operating temperature range.

Description

Technical Field

[0001] The present application relates to the technical field of electric vehicles, and in particular to a method, device, computer equipment, storage medium and computer program product for heating a battery of a pure electric vehicle. Background Art

[0002] The optimal operating temperature range of pure electric commercial vehicle batteries is 15-45℃. When the temperature is lower than this before the vehicle is started, it is usually necessary to use PTC to heat the vehicle battery, or start the vehicle for self-heating. Since the heating rate of these two methods is slow, there is a problem that the discharge rate of the vehicle battery is low for a period of time during the operation of the vehicle. In addition, when using these two methods for heating, the energy consumed is the energy inside the vehicle, which is not energy-saving. Summary of the invention

[0003] Based on this, it is necessary to provide a pure electric vehicle battery heating method, device, computer equipment, computer-readable storage medium and computer program product to address the above technical problems, so that commercial vehicle users can use the vehicle immediately when they need it.

[0004] In a first aspect, the present application provides a method for heating a battery of a pure electric vehicle. The method comprises:

[0005] Real-time acquisition of the current remaining capacity of the vehicle battery at the current moment and the time when the vehicle is ready for use, and real-time determination of the charging time required to charge the current remaining capacity to the rated capacity of the vehicle battery under the condition that the pure electric vehicle charging pile is configured with the first charging current;

[0006] Real-time determination of whether the required charging time is less than the interval time, where the interval time is the interval time between the current time and the time when the vehicle is ready for use;

[0007] If it is less than, the pure electric vehicle charging pile is controlled to charge the vehicle battery with the second charging current;

[0008] If it is not less than, the pure electric vehicle charging pile is controlled to charge the vehicle battery with the first charging current until the vehicle is ready for use, and the temperature of the vehicle battery is detected in real time. If the temperature of the vehicle battery is greater than the first preset temperature, the temperature of the vehicle battery is reduced to a preset temperature range; the first charging current is greater than the second charging current.

[0009] In one embodiment, determining in real time the charging time required to charge the current remaining capacity to the rated capacity of the vehicle battery under the condition that the pure electric vehicle charging pile is configured with a first charging current includes:

[0010] Calculate the difference between the current remaining capacity and the rated capacity, and calculate the first product between the difference and 1000;

[0011] A second product between the first charging current and the rated voltage of the vehicle battery is obtained, a ratio between the first product and the second product is obtained, and the ratio is used as the required charging time.

[0012] In one embodiment, before controlling the pure electric vehicle charging pile to charge the vehicle battery with the second charging current, the method further includes:

[0013] Determine whether the temperature of the vehicle battery is lower than a second preset temperature. If so, control the heater to heat the vehicle battery and detect the temperature of the vehicle battery in real time. If the temperature of the vehicle battery reaches the second preset temperature, control the pure electric vehicle charging pile to charge the vehicle battery with a second charging current.

[0014] In one embodiment, after determining whether the temperature of the vehicle battery is less than the second preset temperature, the method further includes:

[0015] If the temperature of the vehicle battery is not less than the second preset temperature, the pure electric vehicle charging pile is controlled to charge the vehicle battery with the second charging current.

[0016] In one embodiment, before controlling the pure electric vehicle charging pile to charge the vehicle battery with the first charging current, the method further includes:

[0017] Determine whether the temperature of the vehicle battery is lower than a second preset temperature. If so, control the heater to heat the vehicle battery and detect the temperature of the vehicle battery in real time. If the temperature of the vehicle battery reaches the second preset temperature, control the pure electric vehicle charging pile to charge the vehicle battery with a first charging current.

[0018] In one embodiment, the vehicle battery is connected to a battery cooler, which includes a water pump, a refrigerant heat exchanger, a compressor, a condenser, and an evaporator, and reduces the temperature of the vehicle battery to a preset temperature range, including:

[0019] Controlling the water pump to work at a first flow rate, and detecting the temperature of the vehicle battery in real time, if the temperature of the vehicle battery is greater than a third preset temperature, controlling the water pump to work at a second flow rate, wherein the first flow rate is lower than the second flow rate; and the first preset temperature is lower than the third preset temperature;

[0020] Control the refrigerant heat exchanger to transfer the coolant in the water pump to the compressor in real time, control the compressor to compress the coolant into refrigerant, and output the refrigerant to the condenser, control the condenser to adjust the refrigerant to a liquid state at normal temperature and pressure, and output the liquid state at normal temperature and pressure to the evaporator, control the evaporator to convert the liquid state at normal temperature and pressure into a vapor state, and output the vapor state to the refrigerant heat exchanger, control the refrigerant heat exchanger to convert the vapor state into coolant, and output the coolant to the water pump.

[0021] In a second aspect, the present application also provides a battery heating device for a pure electric vehicle. The device comprises:

[0022] An acquisition module is used to obtain in real time the current remaining capacity of the vehicle battery at the current moment and the time when the vehicle is ready for use, and to determine in real time the charging time required to charge the current remaining capacity to the rated capacity of the vehicle battery under the condition that the pure electric vehicle charging pile is configured with a first charging current;

[0023] The first judgment module is used to judge in real time whether the required charging time is less than the interval time, where the interval time is the interval time between the current time and the time when the vehicle is ready for use;

[0024] A first control module is used to control the pure electric vehicle charging pile to charge the vehicle battery with a second charging current if it is less than;

[0025] The second control module is used to control the pure electric vehicle charging pile to charge the vehicle battery with the first charging current until the vehicle is ready for use, and detect the temperature of the vehicle battery in real time. If the temperature of the vehicle battery is greater than the first preset temperature, the temperature of the vehicle battery is reduced to a preset temperature range; the first charging current is greater than the second charging current.

[0026] In a third aspect, the present application further provides a computer device. The computer device includes a memory and a processor, the memory stores a computer program, and the processor implements the following steps when executing the computer program:

[0027] Real-time acquisition of the current remaining capacity of the vehicle battery at the current moment and the time when the vehicle is ready for use, and real-time determination of the charging time required to charge the current remaining capacity to the rated capacity of the vehicle battery under the condition that the pure electric vehicle charging pile is configured with the first charging current;

[0028] Real-time determination of whether the required charging time is less than the interval time, where the interval time is the interval time between the current time and the time when the vehicle is ready for use;

[0029] If it is less than, the pure electric vehicle charging pile is controlled to charge the vehicle battery with the second charging current;

[0030] If it is not less than, the pure electric vehicle charging pile is controlled to charge the vehicle battery with the first charging current until the vehicle is ready for use, and the temperature of the vehicle battery is detected in real time. If the temperature of the vehicle battery is greater than the first preset temperature, the temperature of the vehicle battery is reduced to a preset temperature range; the first charging current is greater than the second charging current.

[0031] In a fourth aspect, the present application further provides a computer-readable storage medium. The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the following steps are implemented:

[0032] Real-time acquisition of the current remaining capacity of the vehicle battery at the current moment and the time when the vehicle is ready for use, and real-time determination of the required charging time to charge the current remaining capacity to the rated capacity of the vehicle battery under the condition that the pure electric vehicle charging pile is configured with the first charging current;

[0033] Real-time determination of whether the required charging time is less than the interval time, where the interval time is the interval time between the current time and the time when the vehicle is ready for use;

[0034] If it is less than, the pure electric vehicle charging pile is controlled to charge the vehicle battery with the second charging current;

[0035] If it is not less than, the pure electric vehicle charging pile is controlled to charge the vehicle battery with the first charging current until the vehicle is ready for use, and the temperature of the vehicle battery is detected in real time. If the temperature of the vehicle battery is greater than the first preset temperature, the temperature of the vehicle battery is reduced to a preset temperature range; the first charging current is greater than the second charging current.

[0036] In a fifth aspect, the present application further provides a computer program product. The computer program product includes a computer program, and when the computer program is executed by a processor, the following steps are implemented:

[0037] Real-time acquisition of the current remaining capacity of the vehicle battery at the current moment and the time when the vehicle is ready for use, and real-time determination of the required charging time to charge the current remaining capacity to the rated capacity of the vehicle battery under the condition that the pure electric vehicle charging pile is configured with the first charging current;

[0038] Real-time determination of whether the required charging time is less than the interval time, where the interval time is the interval time between the current time and the time when the vehicle is ready for use;

[0039] If it is less than, the pure electric vehicle charging pile is controlled to charge the vehicle battery with the second charging current;

[0040] If it is not less than, the pure electric vehicle charging pile is controlled to charge the vehicle battery with the first charging current until the vehicle is ready for use, and the temperature of the vehicle battery is detected in real time. If the temperature of the vehicle battery is greater than the first preset temperature, the temperature of the vehicle battery is reduced to a preset temperature range; the first charging current is greater than the second charging current.

[0041] The above-mentioned pure electric vehicle battery heating method, device, computer equipment, storage medium and computer program product obtain the current remaining capacity of the vehicle battery at the current moment and the time of the standby vehicle in real time, and determine in real time the required charging time to charge the current remaining capacity to the rated capacity of the vehicle battery under the condition that the pure electric vehicle charging pile is configured with the first charging current; judge in real time whether the required charging time is less than the interval time, and the interval time is the interval time between the current moment and the time of the standby vehicle; if less than, control the pure electric vehicle charging pile to charge the vehicle battery with the second charging current; if not less than, control the pure electric vehicle charging pile to charge the vehicle battery with the first charging current until the time of the standby vehicle is reached, and detect the temperature of the vehicle battery in real time, if the temperature of the vehicle battery is greater than the first preset temperature, then reduce the temperature of the vehicle battery to the preset temperature range. On the one hand, since when the standby vehicle is reached, the vehicle battery can be fully charged and the temperature of the vehicle battery can be within the optimal operating temperature range, so that the discharge rate of the vehicle battery is always high during the operation of the vehicle, and there will be no problem that the discharge rate of the vehicle battery is low for a period of time during the operation of the vehicle. Furthermore, since this embodiment utilizes the heat dissipation power generated during the charging process of the vehicle battery to heat the vehicle battery, heating the vehicle battery does not consume the internal energy of the vehicle to which the vehicle battery belongs, and is more energy-efficient than using PTC or starting the vehicle to heat the vehicle battery. On the other hand, if it is less than, the pure electric vehicle charging pile is controlled to charge the vehicle battery with the second charging current; thereby avoiding the problem of energy loss when the time interval between the current moment and the standby moment is long and the pure electric vehicle charging pile is controlled to charge the vehicle battery with the first charging current. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 A schematic diagram of a process of heating a battery of a pure electric vehicle in one embodiment;

[0043] Figure 2 A schematic diagram of a flow chart of a method for heating a battery of a pure electric vehicle in another embodiment;

[0044] Figure 3 is a structural block diagram of a battery heating device for a pure electric vehicle in one embodiment;

[0045] Figure 4 FIG. 4 is a diagram showing the internal structure of a computer device in one embodiment. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0047] It is understood that the terms "first", "second", etc. used in this application can be used in this article to describe various professional terms, but unless otherwise specified, these professional terms are not limited by these terms. These terms are only used to distinguish one professional term from another professional term.

[0048] The optimal operating temperature range of pure electric commercial vehicle batteries is 15-45℃. When the temperature is lower than this before the vehicle is started, it is usually necessary to use PTC to heat the vehicle battery, or start the vehicle for self-heating. Since the heating rate of these two methods is slow, there is a problem that the discharge rate of the vehicle battery is low for a period of time during the operation of the vehicle. In addition, when using these two methods for heating, the energy consumed is the energy inside the vehicle, which is not energy-saving.

[0049] In view of the problems existing in the above-mentioned related technologies, an embodiment of the present invention provides a battery heating method for a pure electric vehicle, which can be applied to a server, a terminal, or a system including a terminal and a server, and is implemented through the interaction between the terminal and the server. Among them, the server can be implemented with an independent server or a server cluster composed of multiple servers. The terminal can be, but is not limited to, various personal computers, laptops, smart phones, tablet computers, Internet of Things devices and portable wearable devices. The Internet of Things devices can be smart speakers, smart TVs, smart air conditioners, smart car-mounted devices, etc. Portable wearable devices can be smart watches, smart bracelets, head-mounted devices, etc. It should be noted that the numbers of "multiple" and the like mentioned in each embodiment of the present application all refer to the number of "at least two", for example, "multiple" refers to "at least two".

[0050] In one embodiment, Figure 1 As shown, a method for heating a battery of a pure electric vehicle is provided. This embodiment takes the method applied to a server as an example for illustration. The method includes the following steps:

[0051] 102. Obtain the current remaining capacity of the vehicle battery at the current moment and the time when the vehicle is ready for use in real time, and determine in real time the charging time required to charge the current remaining capacity to the rated capacity of the vehicle battery under the condition that the pure electric vehicle charging pile is configured with a first charging current.

[0052] Among them, the standby car time can be set by the user of the vehicle to which the vehicle battery belongs during the last use of the vehicle or the last time the vehicle was ended, and the user can also reset the standby car time according to his own needs after setting the standby car time, and the embodiment of the present application does not specifically limit this. It can be understood that since the user may reset the standby car time according to his own needs, it is necessary to obtain the standby car time in real time in step 102 so that the user can use the car immediately at the standby car time. In actual application, the user can interact with the server through the user terminal, the user sets the standby car time in the user terminal, and the server obtains the standby car time set by the user in the user terminal in real time. The current moment is any moment between the last time the vehicle was ended and the standby car time. The first charging current is usually the maximum current that the pure electric vehicle charging pile can provide. For example, the maximum current that the pure electric vehicle charging pile can provide is 400A. Accordingly, the first charging current is 400A, and the embodiment of the present application does not specifically limit this.

[0053] For ease of understanding, it should be noted that real-time acquisition refers to real-time acquisition of the current remaining capacity of the vehicle battery at the current moment and the time when the vehicle is ready for use at each moment since the last time the vehicle was used, and real-time determination of the charging time required to charge the current remaining capacity to the rated capacity of the vehicle battery under the condition that the pure electric vehicle charging pile is configured with the first charging current, until the time when the vehicle is ready for use is reached.

[0054] In practical applications, the current remaining capacity can be calculated based on the state of charge of the vehicle battery. Specifically, the server obtains the current state of charge of the vehicle battery in real time, calculates the product between the current state of charge and the rated capacity of the vehicle battery, and uses the product between the current state of charge and the rated capacity of the vehicle battery as the current remaining capacity. It should be noted that the rated capacity of the vehicle battery refers to the capacity of the vehicle battery that can continue to work for a long time under rated working conditions, which can be obtained based on the nameplate of the vehicle battery, and the embodiments of the present application do not specifically limit this.

[0055] 104. Determine in real time whether the required charging time is less than the interval time, where the interval time is the interval time between the current time and the time when the vehicle is ready for use.

[0056] It is understandable that the real-time determination is similar to the above-mentioned real-time acquisition, which will not be described in detail here. Specifically, a determination is performed each time the required charging time is determined.

[0057] 106. If it is less than, control the pure electric vehicle charging pile to charge the vehicle battery with the second charging current.

[0058] Among them, the value of the second charging current is determined according to the actual application scenario. Specifically, the value of the second charging current can be negatively correlated with the interval duration, that is, the longer the interval duration, the smaller the value of the second charging current. Since the vehicle battery is charged with the second charging current when the required charging time is less than the interval duration, it is avoided that when the time interval between the current moment and the time when the vehicle is to be used is long, the pure electric vehicle charging pile is controlled to charge the vehicle battery with the first charging current, and there is a problem of energy loss. For ease of understanding, it should be noted that the present application utilizes the heat dissipation power generated during the charging process of the vehicle battery to heat the vehicle battery. It can be understood that the vehicle battery will generate heat dissipation power during the charging process, and the greater the charging current of the vehicle battery, the greater the heat dissipation power generated during the charging process, and accordingly, the efficiency of battery heating will be faster.

[0059] The reason why there is energy loss when the time interval between the current moment and the time when the vehicle is ready for use is long, the pure electric vehicle charging pile is controlled to charge the vehicle battery with the first charging current, is because if the required charging time is less than the interval time, the pure electric vehicle charging pile is controlled to charge the vehicle battery with the second charging current, then before the time when the vehicle is ready for use is reached, the current remaining capacity of the vehicle battery can be charged to the rated capacity of the vehicle battery. If the vehicle battery is no longer charged after being fully charged, although the vehicle battery is fully charged and the temperature of the vehicle battery may be maintained in the optimal temperature range when the vehicle battery is fully charged, it cannot be guaranteed that the temperature of the vehicle battery will be maintained in the optimal temperature range when the vehicle is ready for use. Therefore, in this scenario, in order to ensure that the temperature of the vehicle battery is within the optimal temperature range when the vehicle is ready for use, the vehicle battery still needs to be charged after the vehicle battery is fully charged. Although the temperature of the vehicle battery can be kept within the optimal temperature range when the vehicle is ready for use, after the vehicle battery is fully charged, the pure electric vehicle charging pile is still controlled to charge the vehicle battery with the first charging current. On the one hand, there is energy loss in charging, and on the other hand, there is energy loss in reducing the temperature of the vehicle battery to the preset temperature range. Specifically, in the process of charging the vehicle battery with the second charging current, the energy loss of reducing the temperature of the vehicle battery to the preset temperature range is lower than the energy loss of reducing the temperature of the vehicle battery to the preset temperature range in the process of charging the vehicle battery with the first charging current. Therefore, when the required charging time is less than the interval time, the vehicle battery is charged with the second charging current to reduce energy loss.

[0060] 108. If it is not less than, control the pure electric vehicle charging pile to charge the vehicle battery with the first charging current until the vehicle is ready for use, and detect the temperature of the vehicle battery in real time. If the temperature of the vehicle battery is greater than the first preset temperature, reduce the temperature of the vehicle battery to a preset temperature range; the first charging current is greater than the second charging current.

[0061] In practical applications, the value range of the first preset temperature can be 30° C. to 45° C. The preset temperature interval can be the optimal temperature interval, that is, 15° C. to 45° C., or 20° C. to 45° C., and the embodiment of the present application does not specifically limit this, as long as the preset temperature interval is within the optimal temperature interval.

[0062] Since when the required charging time is equal to the interval time, the pure electric vehicle charging pile is controlled to charge the vehicle battery with the first charging current, and the temperature of the vehicle battery is controlled in real time within the preset temperature range, so that when the vehicle is ready for use, the current remaining capacity of the vehicle battery can be charged to the rated capacity of the vehicle battery, and the temperature of the vehicle battery is kept within the optimal temperature range. Since when the required charging time is greater than the interval time, the pure electric vehicle charging pile is controlled to charge the vehicle battery with the first charging current, and the temperature of the vehicle battery is controlled in real time within the preset temperature range, so that when the vehicle is ready for use, the current remaining capacity of the vehicle battery can be charged to the rated capacity of the vehicle battery as much as possible, and the temperature of the vehicle battery is kept within the optimal temperature range.

[0063] In practical applications, a temperature sensor is provided inside the vehicle battery to detect the temperature of the vehicle battery in real time, including: detecting the temperature of the vehicle battery in real time based on the temperature sensor.

[0064] Specifically, the temperature of the vehicle battery may be lowered to a preset temperature range based on a radiator, or may be lowered to a preset temperature range based on a battery cooler, and this embodiment of the present application does not specifically limit this.

[0065] In the above-mentioned pure electric vehicle battery heating method, the current remaining capacity of the vehicle battery at the current moment and the time of the standby vehicle are obtained in real time, and the required charging time for charging the current remaining capacity to the rated capacity of the vehicle battery under the condition that the pure electric vehicle charging pile is configured with the first charging current is determined in real time; whether the required charging time is less than the interval time, the interval time is the interval time between the current moment and the time of the standby vehicle; if less than, the pure electric vehicle charging pile is controlled to charge the vehicle battery with the second charging current; if not less than, the pure electric vehicle charging pile is controlled to charge the vehicle battery with the first charging current until the time of the standby vehicle is reached, and the temperature of the vehicle battery is detected in real time, and if the temperature of the vehicle battery is greater than the first preset temperature, the temperature of the vehicle battery is reduced to the preset temperature range. On the one hand, since when the standby vehicle is reached, the vehicle battery can be fully charged and the temperature of the vehicle battery can be within the optimal operating temperature range, so that the discharge rate of the vehicle battery is always high during the operation of the vehicle, and there will be no problem that the discharge rate of the vehicle battery is low for a period of time during the operation of the vehicle. Furthermore, since this embodiment utilizes the heat dissipation power generated during the charging process of the vehicle battery to heat the vehicle battery, heating the vehicle battery does not consume the internal energy of the vehicle to which the vehicle battery belongs, and is more energy-efficient than using PTC or starting the vehicle to heat the vehicle battery. On the other hand, if it is less than, the pure electric vehicle charging pile is controlled to charge the vehicle battery with the second charging current; thereby avoiding the problem of energy loss when the time interval between the current moment and the standby moment is long and the pure electric vehicle charging pile is controlled to charge the vehicle battery with the first charging current.

[0066] In one embodiment, determining in real time the charging time required to charge the current remaining capacity to the rated capacity of the vehicle battery under the condition that the pure electric vehicle charging pile is configured with a first charging current includes:

[0067] The difference between the current remaining capacity and the rated capacity is calculated, and the first product between the difference and 1000 is calculated.

[0068] Since the units of the current remaining capacity and the rated capacity are kWh, and the unit of the second product is W, the unit of the difference is converted to W by calculating the first product between the difference and 1000.

[0069] A second product between the first charging current and the rated voltage of the vehicle battery is obtained, a ratio between the first product and the second product is obtained, and the ratio is used as the required charging time.

[0070] In this embodiment, the difference between the current remaining capacity and the rated capacity is calculated, and a first product between the difference and 1000 is calculated; a second product between the first charging current and the rated voltage of the vehicle battery is obtained, and a ratio between the first product and the second product is obtained, and the ratio is used as the required charging time, thereby obtaining the required charging time.

[0071] In one embodiment, before controlling the pure electric vehicle charging pile to charge the vehicle battery with the second charging current, the method further includes:

[0072] Determine whether the temperature of the vehicle battery is lower than a second preset temperature. If so, control the heater to heat the vehicle battery and detect the temperature of the vehicle battery in real time. If the temperature of the vehicle battery reaches the second preset temperature, control the pure electric vehicle charging pile to charge the vehicle battery with a second charging current.

[0073] The second preset temperature may be 1°C.

[0074] In this embodiment, on the one hand, since the vehicle battery cannot be charged when the temperature is lower than the second preset temperature, before controlling the pure electric vehicle charging pile to charge the vehicle battery with the second charging current, it is determined whether the temperature of the vehicle battery is lower than the second preset temperature. If it is lower than, the heater is controlled to heat the vehicle battery and detect the temperature of the vehicle battery in real time. If the temperature of the vehicle battery reaches the second preset temperature, the pure electric vehicle charging pile is controlled to charge the vehicle battery with the second charging current. This avoids the inability to charge the vehicle battery due to the vehicle battery being too low. On the other hand, if the temperature of the vehicle battery reaches the second preset temperature, the pure electric vehicle charging pile is controlled to charge the vehicle battery with the second charging current. Therefore, when the weather is cold and the temperature of the vehicle battery is likely to be low, the vehicle battery is charged with the second charging current, so that the temperature of the vehicle battery is controlled not to be lower than the second preset temperature. In actual application, the pure electric vehicle charging pile is controlled to charge the vehicle battery with the second charging current, so that the temperature of the vehicle battery can be kept above 10°C.

[0075] In one embodiment, after determining whether the temperature of the vehicle battery is less than the second preset temperature, the method further includes:

[0076] If the temperature of the vehicle battery is not less than the second preset temperature, the pure electric vehicle charging pile is controlled to charge the vehicle battery with the second charging current.

[0077] In this embodiment, before controlling the pure electric vehicle charging pile to charge the vehicle battery with the second charging current, it is determined whether the temperature of the vehicle battery is less than the second preset temperature. If the temperature of the vehicle battery is not less than the second preset temperature, the pure electric vehicle charging pile is controlled to charge the vehicle battery with the second charging current. This avoids the inability to charge the vehicle battery due to the temperature of the vehicle battery being lower than the second preset temperature.

[0078] In one embodiment, before controlling the pure electric vehicle charging pile to charge the vehicle battery with the first charging current, the method further includes:

[0079] Determine whether the temperature of the vehicle battery is lower than a second preset temperature. If so, control the heater to heat the vehicle battery and detect the temperature of the vehicle battery in real time. If the temperature of the vehicle battery reaches the second preset temperature, control the pure electric vehicle charging pile to charge the vehicle battery with a first charging current.

[0080] Among them, the explanation of the second preset temperature in this embodiment can refer to the explanation in the above embodiment, and will not be repeated here.

[0081] In this embodiment, before controlling the pure electric vehicle charging pile to charge the vehicle battery with the first charging current, it is determined whether the temperature of the vehicle battery is less than the second preset temperature. If so, the heater is controlled to heat the vehicle battery and the temperature of the vehicle battery is detected in real time. If the temperature of the vehicle battery reaches the second preset temperature, the pure electric vehicle charging pile is controlled to charge the vehicle battery with the first charging current. This avoids the inability to charge the vehicle battery due to the vehicle battery temperature being too low.

[0082] In one embodiment, the vehicle battery is connected to a battery cooler, which includes a water pump, a refrigerant heat exchanger, a compressor, a condenser, and an evaporator, and reduces the temperature of the vehicle battery to a preset temperature range, including:

[0083] Controlling the water pump to work at a first flow rate, and detecting the temperature of the vehicle battery in real time, if the temperature of the vehicle battery is greater than a third preset temperature, controlling the water pump to work at a second flow rate, wherein the first flow rate is lower than the second flow rate; and the first preset temperature is lower than the third preset temperature;

[0084] Control the refrigerant heat exchanger to transfer the coolant in the water pump to the compressor in real time, control the compressor to compress the coolant into refrigerant, and output the refrigerant to the condenser, control the condenser to adjust the refrigerant to a liquid state at normal temperature and pressure, and output the liquid state at normal temperature and pressure to the evaporator, control the evaporator to convert the liquid state at normal temperature and pressure into a vapor state, and output the vapor state to the refrigerant heat exchanger, control the refrigerant heat exchanger to convert the vapor state into coolant, and output the coolant to the water pump.

[0085] In this embodiment, since the temperature of the vehicle battery is detected in real time, the temperature of the vehicle battery is reduced to a preset temperature range based on the battery cooler, so that when the vehicle is ready to be used, the temperature of the vehicle battery can be maintained within the optimal temperature range.

[0086] In one embodiment, Figure 2 As shown, a method for heating a battery of a pure electric vehicle is provided. This embodiment takes the method applied to a server as an example for illustration. The method may include the following steps:

[0087] 202. Obtain the current remaining capacity of the vehicle battery at the current moment and the time when the vehicle is ready for use in real time, and determine in real time the charging time required to charge the current remaining capacity to the rated capacity of the vehicle battery under the condition that the pure electric vehicle charging pile is configured with a first charging current.

[0088] 204. Determine in real time whether the required charging time is less than the interval time, where the interval time is the interval time between the current time and the time when the vehicle is ready for use.

[0089] 206. If it is less than, determine whether the temperature of the vehicle battery is less than the second preset temperature. If the temperature of the vehicle battery is less than the second preset temperature, control the heater to heat the vehicle battery and detect the temperature of the vehicle battery in real time. If the temperature of the vehicle battery reaches the second preset temperature, control the pure electric vehicle charging pile to charge the vehicle battery with the second charging current; if the temperature of the vehicle battery is not less than the second preset temperature, control the pure electric vehicle charging pile to charge the vehicle battery with the second charging current.

[0090] 208. If it is not less than, determine whether the temperature of the vehicle battery is less than the second preset temperature. If the temperature of the vehicle battery is less than the second preset temperature, control the heater to heat the vehicle battery and detect the temperature of the vehicle battery in real time. If the temperature of the vehicle battery reaches the second preset temperature, control the pure electric vehicle charging pile to charge the vehicle battery with the first charging current until the vehicle is ready for use, and detect the temperature of the vehicle battery in real time. If the temperature of the vehicle battery is greater than the first preset temperature, reduce the temperature of the vehicle battery to the preset temperature range. The first charging current is greater than the second charging current.

[0091] It should be noted that the explanations of the various nouns and steps in this embodiment can refer to the explanations of the various nouns and steps in the above method embodiment, and will not be repeated here.

[0092] It should be understood that, although the various steps in the flowcharts involved in the above-mentioned embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps does not have a strict order restriction, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above-mentioned embodiments can include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.

[0093] Based on the same inventive concept, the embodiment of the present application also provides a pure electric vehicle battery heating device for implementing the pure electric vehicle battery heating method involved above. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above method, so the specific limitations in one or more pure electric vehicle battery heating device embodiments provided below can refer to the limitations of the pure electric vehicle battery heating method above, and will not be repeated here.

[0094] In one embodiment, Figure 3 As shown, a battery heating device for a pure electric vehicle is provided, including: an acquisition module 302, a first judgment module 304, a first control module 306 and a second control module 308, wherein:

[0095] The acquisition module 302 is used to obtain the current remaining capacity of the vehicle battery at the current moment and the time when the vehicle is ready for use in real time, and to determine in real time the charging time required to charge the current remaining capacity to the rated capacity of the vehicle battery under the condition that the pure electric vehicle charging pile is configured with the first charging current;

[0096] The first judgment module 304 is used to judge in real time whether the required charging time is less than the interval time, where the interval time is the interval time between the current time and the time when the vehicle is ready for use;

[0097] The first control module 306 is used to control the pure electric vehicle charging pile to charge the vehicle battery with a second charging current if it is less than;

[0098] The second control module 308 is used to control the pure electric vehicle charging pile to charge the vehicle battery with the first charging current until the vehicle is ready for use, and detect the temperature of the vehicle battery in real time. If the temperature of the vehicle battery is greater than the first preset temperature, the temperature of the vehicle battery is reduced to a preset temperature range; the first charging current is greater than the second charging current.

[0099] In one embodiment, the acquisition module 302 includes:

[0100] a calculation unit, used to calculate the difference between the current remaining capacity and the rated capacity, and calculate a first product between the difference and 1000;

[0101] The acquisition unit is used to acquire a second product between the first charging current and the rated voltage of the vehicle battery, acquire a ratio between the first product and the second product, and use the ratio as the required charging time.

[0102] In one embodiment, the device further comprises:

[0103] The second judgment module is used to judge whether the temperature of the vehicle battery is lower than the second preset temperature. If so, the heater is controlled to heat the vehicle battery and detect the temperature of the vehicle battery in real time. If the temperature of the vehicle battery reaches the second preset temperature, the pure electric vehicle charging pile is controlled to charge the vehicle battery with a second charging current.

[0104] In one embodiment, the second determination module further includes:

[0105] The first control unit is used to control the pure electric vehicle charging pile to charge the vehicle battery with a second charging current if the temperature of the vehicle battery is not less than a second preset temperature.

[0106] In one embodiment, the device further comprises:

[0107] The third judgment module is used to judge whether the temperature of the vehicle battery is lower than the second preset temperature. If so, the heater is controlled to heat the vehicle battery and the temperature of the vehicle battery is detected in real time. If the temperature of the vehicle battery reaches the second preset temperature, the pure electric vehicle charging pile is controlled to charge the vehicle battery with the first charging current.

[0108] In one embodiment, the vehicle battery is connected to a battery cooler, the battery cooler includes a water pump, a refrigerant heat exchanger, a compressor, a condenser and an evaporator, and the second control module 308 includes:

[0109] a second control unit, for controlling the water pump to operate at a first flow rate, and detecting the temperature of the vehicle battery in real time, and controlling the water pump to operate at a second flow rate if the temperature of the vehicle battery is greater than a third preset temperature, wherein the first flow rate is lower than the second flow rate; and the first preset temperature is lower than the third preset temperature;

[0110] The third control unit is used to control the refrigerant heat exchanger to transfer the coolant in the water pump to the compressor in real time, control the compressor to compress the coolant into refrigerant, and output the refrigerant to the condenser, control the condenser to adjust the refrigerant to a liquid state at normal temperature and pressure, and output the liquid state at normal temperature and pressure to the evaporator, control the evaporator to convert the liquid state at normal temperature and pressure into a vapor state, and output the vapor state to the refrigerant heat exchanger, control the refrigerant heat exchanger to convert the vapor state into a coolant, and output the coolant to the water pump.

[0111] Each module in the above-mentioned pure electric vehicle battery heating device can be fully or partially implemented by software, hardware and their combination. Each of the above-mentioned modules can be embedded in or independent of the processor in the computer device in the form of hardware, or can be stored in the memory of the computer device in the form of software, so that the processor can call and execute the corresponding operations of each of the above modules.

[0112] In one embodiment, a computer device is provided. The computer device may be a server, and its internal structure diagram may be as follows: Figure 4 As shown. The computer device includes a processor, a memory and a network interface connected through a system bus. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database of the computer device is used to store data such as the current remaining capacity, the time when the vehicle is ready for use, the required charging time and the temperature of the vehicle battery. The network interface of the computer device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, a pure electric vehicle battery heating method is implemented.

[0113] Those skilled in the art will understand that Figure 4 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0114] In one embodiment, a computer device is provided, including a memory and a processor, wherein a computer program is stored in the memory, and when the processor executes the computer program, the following steps are implemented:

[0115] Real-time acquisition of the current remaining capacity of the vehicle battery at the current moment and the time when the vehicle is ready for use, and real-time determination of the charging time required to charge the current remaining capacity to the rated capacity of the vehicle battery under the condition that the pure electric vehicle charging pile is configured with the first charging current;

[0116] Real-time determination of whether the required charging time is less than the interval time, where the interval time is the interval time between the current time and the time when the vehicle is ready for use;

[0117] If it is less than, the pure electric vehicle charging pile is controlled to charge the vehicle battery with the second charging current;

[0118] If it is not less than, the pure electric vehicle charging pile is controlled to charge the vehicle battery with the first charging current until the vehicle is ready for use, and the temperature of the vehicle battery is detected in real time. If the temperature of the vehicle battery is greater than the first preset temperature, the temperature of the vehicle battery is reduced to a preset temperature range; the first charging current is greater than the second charging current.

[0119] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:

[0120] Calculate the difference between the current remaining capacity and the rated capacity, and calculate the first product between the difference and 1000;

[0121] A second product between the first charging current and the rated voltage of the vehicle battery is obtained, a ratio between the first product and the second product is obtained, and the ratio is used as the required charging time.

[0122] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:

[0123] Determine whether the temperature of the vehicle battery is lower than a second preset temperature. If so, control the heater to heat the vehicle battery and detect the temperature of the vehicle battery in real time. If the temperature of the vehicle battery reaches the second preset temperature, control the pure electric vehicle charging pile to charge the vehicle battery with a second charging current.

[0124] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:

[0125] If the temperature of the vehicle battery is not less than the second preset temperature, the pure electric vehicle charging pile is controlled to charge the vehicle battery with the second charging current.

[0126] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:

[0127] Determine whether the temperature of the vehicle battery is lower than a second preset temperature. If so, control the heater to heat the vehicle battery and detect the temperature of the vehicle battery in real time. If the temperature of the vehicle battery reaches the second preset temperature, control the pure electric vehicle charging pile to charge the vehicle battery with a first charging current.

[0128] In one embodiment, the vehicle battery is connected to a battery cooler, the battery cooler includes a water pump, a refrigerant heat exchanger, a compressor, a condenser, and an evaporator, and the processor further implements the following steps when executing the computer program:

[0129] Controlling the water pump to work at a first flow rate, and detecting the temperature of the vehicle battery in real time, if the temperature of the vehicle battery is greater than a third preset temperature, controlling the water pump to work at a second flow rate, wherein the first flow rate is lower than the second flow rate; and the first preset temperature is lower than the third preset temperature;

[0130] Control the refrigerant heat exchanger to transfer the coolant in the water pump to the compressor in real time, control the compressor to compress the coolant into refrigerant, and output the refrigerant to the condenser, control the condenser to adjust the refrigerant to a liquid state at normal temperature and pressure, and output the liquid state at normal temperature and pressure to the evaporator, control the evaporator to convert the liquid state at normal temperature and pressure into a vapor state, and output the vapor state to the refrigerant heat exchanger, control the refrigerant heat exchanger to convert the vapor state into coolant, and output the coolant to the water pump.

[0131] In one embodiment, a computer readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, the following steps are implemented:

[0132] Real-time acquisition of the current remaining capacity of the vehicle battery at the current moment and the time when the vehicle is ready for use, and real-time determination of the charging time required to charge the current remaining capacity to the rated capacity of the vehicle battery under the condition that the pure electric vehicle charging pile is configured with the first charging current;

[0133] Real-time determination of whether the required charging time is less than the interval time, where the interval time is the interval time between the current time and the time when the vehicle is ready for use;

[0134] If it is less than, the pure electric vehicle charging pile is controlled to charge the vehicle battery with the second charging current;

[0135] If it is not less than, the pure electric vehicle charging pile is controlled to charge the vehicle battery with the first charging current until the vehicle is ready for use, and the temperature of the vehicle battery is detected in real time. If the temperature of the vehicle battery is greater than the first preset temperature, the temperature of the vehicle battery is reduced to a preset temperature range; the first charging current is greater than the second charging current.

[0136] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0137] Calculate the difference between the current remaining capacity and the rated capacity, and calculate the first product between the difference and 1000;

[0138] A second product between the first charging current and the rated voltage of the vehicle battery is obtained, a ratio between the first product and the second product is obtained, and the ratio is used as the required charging time.

[0139] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0140] Determine whether the temperature of the vehicle battery is lower than a second preset temperature. If so, control the heater to heat the vehicle battery and detect the temperature of the vehicle battery in real time. If the temperature of the vehicle battery reaches the second preset temperature, control the pure electric vehicle charging pile to charge the vehicle battery with a second charging current.

[0141] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0142] If the temperature of the vehicle battery is not less than the second preset temperature, the pure electric vehicle charging pile is controlled to charge the vehicle battery with the second charging current.

[0143] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0144] Determine whether the temperature of the vehicle battery is lower than a second preset temperature. If so, control the heater to heat the vehicle battery and detect the temperature of the vehicle battery in real time. If the temperature of the vehicle battery reaches the second preset temperature, control the pure electric vehicle charging pile to charge the vehicle battery with a first charging current.

[0145] In one embodiment, the vehicle battery is connected to a battery cooler, the battery cooler includes a water pump, a refrigerant heat exchanger, a compressor, a condenser and an evaporator, and the computer program, when executed by the processor, further implements the following steps:

[0146] Controlling the water pump to work at a first flow rate, and detecting the temperature of the vehicle battery in real time, if the temperature of the vehicle battery is greater than a third preset temperature, controlling the water pump to work at a second flow rate, wherein the first flow rate is lower than the second flow rate; and the first preset temperature is lower than the third preset temperature;

[0147] Control the refrigerant heat exchanger to transfer the coolant in the water pump to the compressor in real time, control the compressor to compress the coolant into refrigerant, and output the refrigerant to the condenser, control the condenser to adjust the refrigerant to a liquid state at normal temperature and pressure, and output the liquid state at normal temperature and pressure to the evaporator, control the evaporator to convert the liquid state at normal temperature and pressure into a vapor state, and output the vapor state to the refrigerant heat exchanger, control the refrigerant heat exchanger to convert the vapor state into coolant, and output the coolant to the water pump.

[0148] In one embodiment, a computer program product is provided, comprising a computer program, which, when executed by a processor, implements the following steps:

[0149] Real-time acquisition of the current remaining capacity of the vehicle battery at the current moment and the time when the vehicle is ready for use, and real-time determination of the required charging time to charge the current remaining capacity to the rated capacity of the vehicle battery under the condition that the pure electric vehicle charging pile is configured with the first charging current;

[0150] Real-time determination of whether the required charging time is less than the interval time, where the interval time is the interval time between the current time and the time when the vehicle is ready for use;

[0151] If it is less than, the pure electric vehicle charging pile is controlled to charge the vehicle battery with the second charging current;

[0152] If it is not less than, the pure electric vehicle charging pile is controlled to charge the vehicle battery with the first charging current until the vehicle is ready for use, and the temperature of the vehicle battery is detected in real time. If the temperature of the vehicle battery is greater than the first preset temperature, the temperature of the vehicle battery is reduced to a preset temperature range; the first charging current is greater than the second charging current.

[0153] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0154] Calculate the difference between the current remaining capacity and the rated capacity, and calculate the first product between the difference and 1000;

[0155] A second product between the first charging current and the rated voltage of the vehicle battery is obtained, a ratio between the first product and the second product is obtained, and the ratio is used as the required charging time.

[0156] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0157] Determine whether the temperature of the vehicle battery is lower than a second preset temperature. If so, control the heater to heat the vehicle battery and detect the temperature of the vehicle battery in real time. If the temperature of the vehicle battery reaches the second preset temperature, control the pure electric vehicle charging pile to charge the vehicle battery with a second charging current.

[0158] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0159] If the temperature of the vehicle battery is not less than the second preset temperature, the pure electric vehicle charging pile is controlled to charge the vehicle battery with the second charging current.

[0160] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented:

[0161] Determine whether the temperature of the vehicle battery is lower than a second preset temperature. If so, control the heater to heat the vehicle battery and detect the temperature of the vehicle battery in real time. If the temperature of the vehicle battery reaches the second preset temperature, control the pure electric vehicle charging pile to charge the vehicle battery with a first charging current.

[0162] In one embodiment, the vehicle battery is connected to a battery cooler, the battery cooler includes a water pump, a refrigerant heat exchanger, a compressor, a condenser and an evaporator, and the computer program, when executed by the processor, further implements the following steps:

[0163] Controlling the water pump to work at a first flow rate, and detecting the temperature of the vehicle battery in real time, if the temperature of the vehicle battery is greater than a third preset temperature, controlling the water pump to work at a second flow rate, wherein the first flow rate is lower than the second flow rate; and the first preset temperature is lower than the third preset temperature;

[0164] Control the refrigerant heat exchanger to transfer the coolant in the water pump to the compressor in real time, control the compressor to compress the coolant into refrigerant, and output the refrigerant to the condenser, control the condenser to adjust the refrigerant to a liquid state at normal temperature and pressure, and output the liquid state at normal temperature and pressure to the evaporator, control the evaporator to convert the liquid state at normal temperature and pressure into a vapor state, and output the vapor state to the refrigerant heat exchanger, control the refrigerant heat exchanger to convert the vapor state into coolant, and output the coolant to the water pump.

[0165] Those of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), tape, floppy disk, flash memory or optical memory, etc. Volatile memory can include random access memory (RAM) or external cache memory. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM).

[0166] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0167] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A pure electric vehicle battery heating method, characterized in that: The method comprises: Real-time acquisition of the current remaining capacity of the vehicle battery at the current moment and the time of standby vehicle, and real-time determination of the required charging time for charging the current remaining capacity to the rated capacity of the vehicle battery under the condition that the pure electric vehicle charging pile is configured with a first charging current; The real-time determination of the required charging time for charging the current remaining capacity to the rated capacity of the vehicle battery under the condition that the pure electric vehicle charging pile is configured with a first charging current includes: calculating the difference between the current remaining capacity and the rated capacity, and calculating a first product between the difference and 1000; obtaining a second product between the first charging current and the rated voltage of the vehicle battery, obtaining a ratio between the first product and the second product, and using the ratio as the required charging time; Determine in real time whether the required charging time is less than the interval time, where the interval time is the interval time between the current time and the waiting time for the vehicle to be used; If it is less than, controlling the pure electric vehicle charging pile to charge the vehicle battery with a second charging current; If it is not less than, the pure electric vehicle charging pile is controlled to charge the vehicle battery with the first charging current until the vehicle is ready for use, and the temperature of the vehicle battery is detected in real time. If the temperature of the vehicle battery is greater than a first preset temperature, the temperature of the vehicle battery is lowered to a preset temperature range; the first charging current is greater than the second charging current.

2. The method according to claim 1, characterized in that: Before controlling the pure electric vehicle charging pile to charge the vehicle battery with the second charging current, the method further includes: Determine whether the temperature of the vehicle battery is lower than a second preset temperature. If so, control the heater to heat the vehicle battery and detect the temperature of the vehicle battery in real time. If the temperature of the vehicle battery reaches the second preset temperature, control the pure electric vehicle charging pile to charge the vehicle battery with the second charging current.

3. The method according to claim 2, characterized in that After determining whether the temperature of the vehicle battery is less than a second preset temperature, the method further includes: If the temperature of the vehicle battery is not less than the second preset temperature, the pure electric vehicle charging pile is controlled to charge the vehicle battery with the second charging current.

4. The method according to claim 1, characterized in that: Before controlling the pure electric vehicle charging pile to charge the vehicle battery with the first charging current, the method further includes: Determine whether the temperature of the vehicle battery is lower than a second preset temperature. If so, control the heater to heat the vehicle battery and detect the temperature of the vehicle battery in real time. If the temperature of the vehicle battery reaches the second preset temperature, control the pure electric vehicle charging pile to charge the vehicle battery with the first charging current.

5. The method according to claim 1, characterized in that The vehicle battery is connected to a battery cooler, and the battery cooler includes a water pump, a refrigerant heat exchanger, a compressor, a condenser, and an evaporator. The temperature of the vehicle battery is reduced to a preset temperature range, including: Controlling the water pump to operate at a first flow rate, and detecting the temperature of the vehicle battery in real time, and if the temperature of the vehicle battery is greater than a third preset temperature, controlling the water pump to operate at a second flow rate, wherein the first flow rate is lower than the second flow rate; and the first preset temperature is lower than the third preset temperature; Control the refrigerant heat exchanger to transfer the coolant in the water pump to the compressor in real time, control the compressor to compress the coolant into refrigerant, and output the refrigerant to the condenser, control the condenser to adjust the refrigerant to a liquid state at normal temperature and pressure, and output the liquid state at normal temperature and pressure to the evaporator, control the evaporator to convert the liquid state at normal temperature and pressure into a vapor state, and output the vapor state to the refrigerant heat exchanger, control the refrigerant heat exchanger to convert the vapor state into a coolant, and output the coolant to the water pump.

6. A computer device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 5 are implemented.

7. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 5 are implemented.

8. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 5 are implemented.

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