Vehicle temperature control methods, systems, devices, equipment and storage media

Abstract

This disclosure provides a vehicle temperature control method, system, device, equipment, and storage medium, relating to the automotive field. In this disclosure, the water circulation rate of the heating system can be adjusted based on the battery compartment temperature and the current operating state of the cooling system, thereby controlling the degree of battery temperature regulation. By regulating battery temperature in this way, when the user turns on the cooling system and the battery needs heating, the battery temperature regulation requirements are met while also ensuring a certain degree of cooling efficiency within the vehicle cabin, thus maintaining cabin comfort.

Description

Technical Field

[0001] This disclosure relates to the automotive field, specifically to a vehicle temperature control method, system, device, equipment, and storage medium. Background Technology

[0002] For hybrid electric vehicles, the battery can be charged using energy generated by the combustion engine and / or during braking. A thermal management system regulates the battery temperature to ensure optimal battery performance. However, when the user turns on the cooling system (i.e., the air conditioning is on and in cooling mode) to cool the cabin, and the battery needs to be heated, this can affect the cooling system's efficiency and reduce cabin comfort. Summary of the Invention

[0003] This disclosure provides a vehicle temperature control method, system, device, equipment, and storage medium, which can solve the technical problems existing in related technologies. The technical solution is as follows:

[0004] In a first aspect, embodiments of this disclosure provide a vehicle temperature control method, the method being applied to a vehicle temperature control system, the vehicle temperature control system including a main heat exchanger, a heating system, a battery heat exchanger, a cooling system, a battery compartment, a battery, and a controller;

[0005] The main heat exchanger has a first liquid passage, a second liquid passage, and an air passage. The first liquid passage of the main heat exchanger, the heating system, and the battery heat exchanger are connected in series via pipelines. The second liquid passage of the main heat exchanger and the refrigeration system are connected in series via pipelines.

[0006] The battery heat exchanger is attached to the battery compartment;

[0007] The battery compartment houses the battery;

[0008] The method includes:

[0009] The current temperature of the battery compartment is obtained, and the current operating status of the refrigeration system is obtained, wherein the current operating status includes running or not running;

[0010] Based on the current temperature and the current operating state, the first water circulation flow rate of the heating system is determined;

[0011] The operation of the heating system is controlled based on the first water circulation flow rate.

[0012] In one possible implementation, the current charging mode of the battery is obtained, wherein the current charging mode includes fast charging or slow charging;

[0013] Determining the first water circulation flow rate of the heating system based on the current temperature and the current operating state includes:

[0014] Based on the current temperature, the current operating state, and the current charging mode, the first water circulation flow rate of the heating system is determined.

[0015] In one possible implementation, the temperature range to which the current temperature belongs and the target water temperature corresponding to the current charging mode are determined based on the correspondence between the temperature range of the battery compartment, the charging mode of the battery, and the water temperature.

[0016] The control of the heating system based on the first water circulation flow rate includes:

[0017] The heating system is controlled to operate based on the first water circulation flow rate and the target water temperature.

[0018] In one possible implementation, determining the first water circulation flow rate of the heating system based on the current temperature, the current operating state, and the current charging mode includes:

[0019] When the current temperature is less than or equal to the first temperature threshold and the current working state is running, the temperature range to which the current temperature belongs and the target flow rate ratio corresponding to the current charging mode are determined based on the temperature range of the battery compartment, the corresponding relationship between the charging mode and the flow rate ratio of the battery. Here, the current temperature being less than or equal to the first temperature threshold indicates that the battery compartment needs to be heated, and the flow rate ratio is the ratio of the water circulation flow rate of the heating system to the air flow rate of the air passage.

[0020] Based on the vehicle's current air outlet setting, determine the current airflow velocity in the air passage.

[0021] The first water circulation velocity is determined based on the ratio of the current air velocity to the target velocity.

[0022] In one possible implementation, in the correspondence between the temperature range of the battery compartment, the charging mode of the battery, and the flow rate ratio, the higher the temperature range, the smaller the corresponding flow rate ratio.

[0023] In one possible implementation, determining the first water circulation flow rate of the heating system based on the current temperature, the current operating state, and the current charging mode includes:

[0024] When the current temperature is greater than or equal to the second temperature threshold, or when the current operating state is not running, the first water circulation rate corresponding to the current temperature, the current operating state, and the current charging mode is determined based on the correspondence between the temperature of the battery compartment, the operating state of the refrigeration system, the charging mode of the battery, and the water circulation rate of the heating system.

[0025] In one possible implementation, when the current temperature is not within any temperature range included in the correspondence, the highest and lowest temperatures are obtained from the temperatures of different parts of the battery compartment.

[0026] When the difference between the highest temperature and the lowest temperature is greater than the third temperature threshold, the pre-stored second water circulation flow rate of the heating system is obtained, and the operation of the heating system is controlled based on the second water circulation flow rate.

[0027] In one possible implementation, the first liquid passage is a water passage.

[0028] In one possible implementation, the second liquid passage is a refrigerant passage.

[0029] In one possible implementation, the battery heat exchanger is located inside the battery compartment.

[0030] Secondly, embodiments of this disclosure provide a vehicle temperature control system, which includes a main heat exchanger, a heating system, a battery heat exchanger, a cooling system, a battery compartment, a battery, and a controller.

[0031] The main heat exchanger has a first liquid passage, a second liquid passage, and an air passage. The first liquid passage of the main heat exchanger, the heating system, and the battery heat exchanger are connected in series via pipelines. The second liquid passage of the main heat exchanger and the refrigeration system are connected in series via pipelines.

[0032] The battery heat exchanger is attached to the battery compartment;

[0033] The battery compartment houses the battery;

[0034] The controller is used for:

[0035] The current temperature of the battery compartment is obtained, and the current operating status of the refrigeration system is obtained, wherein the current operating status includes running or not running;

[0036] Based on the current temperature and the current operating state, the first water circulation flow rate of the heating system is determined;

[0037] The operation of the heating system is controlled based on the first water circulation flow rate.

[0038] In one possible implementation, the controller is further configured to:

[0039] Obtain the current charging mode of the battery, wherein the current charging mode includes fast charging or slow charging;

[0040] The controller is used for:

[0041] Based on the current temperature, the current operating state, and the current charging mode, the first water circulation flow rate of the heating system is determined.

[0042] In one possible implementation, the controller is further configured to:

[0043] Based on the temperature range of the battery compartment, the charging mode of the battery, and the correspondence between water temperature, the temperature range to which the current temperature belongs and the target water temperature corresponding to the current charging mode are determined.

[0044] The controller is used for:

[0045] The heating system is controlled to operate based on the first water circulation flow rate and the target water temperature.

[0046] In one possible implementation, the controller is configured to:

[0047] When the current temperature is less than or equal to the first temperature threshold and the current working state is running, the temperature range to which the current temperature belongs and the target flow rate ratio corresponding to the current charging mode are determined based on the temperature range of the battery compartment, the corresponding relationship between the charging mode and the flow rate ratio of the battery. Here, the current temperature being less than or equal to the first temperature threshold indicates that the battery compartment needs to be heated, and the flow rate ratio is the ratio of the water circulation flow rate of the heating system to the air flow rate of the air passage.

[0048] Based on the vehicle's current air outlet setting, determine the current airflow velocity in the air passage.

[0049] The first water circulation velocity is determined based on the ratio of the current air velocity to the target velocity.

[0050] In one possible implementation, in the correspondence between the temperature range of the battery compartment, the charging mode of the battery, and the flow rate ratio, the higher the temperature range, the smaller the corresponding flow rate ratio.

[0051] In one possible implementation, the controller is configured to:

[0052] When the current temperature is greater than or equal to the second temperature threshold, or when the current operating state is not running, the first water circulation rate corresponding to the current temperature, the current operating state, and the current charging mode is determined based on the correspondence between the temperature of the battery compartment, the operating state of the refrigeration system, the charging mode of the battery, and the water circulation rate of the heating system.

[0053] In one possible implementation, the controller is further configured to:

[0054] When the current temperature is not within any temperature range included in the corresponding relationship, the highest and lowest temperatures are obtained from the temperatures of different parts of the battery compartment.

[0055] When the difference between the highest temperature and the lowest temperature is greater than the third temperature threshold, the pre-stored second water circulation flow rate of the heating system is obtained, and the operation of the heating system is controlled based on the second water circulation flow rate.

[0056] In one possible implementation, the first liquid passage is a water passage.

[0057] In one possible implementation, the second liquid passage is a refrigerant passage.

[0058] In one possible implementation, the battery heat exchanger is located inside the battery compartment.

[0059] Thirdly, this disclosure provides a vehicle temperature control device, which is applied to a controller. The controller belongs to a vehicle temperature control system, which includes a main heat exchanger, a heating system, a battery heat exchanger, a cooling system, a battery compartment, and a battery.

[0060] The main heat exchanger has a first liquid passage, a second liquid passage, and an air passage. The first liquid passage of the main heat exchanger, the heating system, and the battery heat exchanger are connected in series via pipelines. The second liquid passage of the main heat exchanger and the refrigeration system are connected in series via pipelines.

[0061] The battery heat exchanger is attached to the battery compartment;

[0062] The battery compartment houses the battery;

[0063] The device includes:

[0064] The acquisition module is used to acquire the current temperature of the battery compartment and the current operating status of the refrigeration system, wherein the current operating status includes running or not running;

[0065] The determining module is used to determine the first water circulation flow rate of the heating system based on the current temperature and the current operating state;

[0066] The control module is used to control the operation of the heating system based on the first water circulation flow rate.

[0067] In one possible implementation, the acquisition module is further configured to:

[0068] Obtain the current charging mode of the battery, wherein the current charging mode includes fast charging or slow charging;

[0069] The determining module is used for:

[0070] Based on the current temperature, the current operating state, and the current charging mode, the first water circulation flow rate of the heating system is determined.

[0071] In one possible implementation, the determining module is further configured to:

[0072] Based on the temperature range of the battery compartment, the charging mode of the battery, and the correspondence between water temperature, the temperature range to which the current temperature belongs and the target water temperature corresponding to the current charging mode are determined.

[0073] The control module is used for:

[0074] The heating system is controlled to operate based on the first water circulation flow rate and the target water temperature.

[0075] In one possible implementation, the determining module is configured to:

[0076] When the current temperature is less than or equal to the first temperature threshold and the current working state is running, the temperature range to which the current temperature belongs and the target flow rate ratio corresponding to the current charging mode are determined based on the temperature range of the battery compartment, the corresponding relationship between the charging mode and the flow rate ratio of the battery. Here, the current temperature being less than or equal to the first temperature threshold indicates that the battery compartment needs to be heated, and the flow rate ratio is the ratio of the water circulation flow rate of the heating system to the air flow rate of the air passage.

[0077] Based on the vehicle's current air outlet setting, determine the current airflow velocity in the air passage.

[0078] The first water circulation velocity is determined based on the ratio of the current air velocity to the target velocity.

[0079] In one possible implementation, in the correspondence between the temperature range of the battery compartment, the charging mode of the battery, and the flow rate ratio, the higher the temperature range, the smaller the corresponding flow rate ratio.

[0080] In one possible implementation, the determining module is configured to:

[0081] When the current temperature is greater than or equal to the second temperature threshold, or when the current operating state is not running, the first water circulation rate corresponding to the current temperature, the current operating state, and the current charging mode is determined based on the correspondence between the temperature of the battery compartment, the operating state of the refrigeration system, the charging mode of the battery, and the water circulation rate of the heating system.

[0082] In one possible implementation, the acquisition module is further configured to:

[0083] When the current temperature is not within any temperature range included in the corresponding relationship, the highest and lowest temperatures are obtained from the temperatures of different parts of the battery compartment.

[0084] When the difference between the highest temperature and the lowest temperature is greater than the third temperature threshold, the pre-stored second water circulation flow rate of the heating system is obtained, and the operation of the heating system is controlled based on the second water circulation flow rate.

[0085] In one possible implementation, the first liquid passage is a water passage.

[0086] In one possible implementation, the second liquid passage is a refrigerant passage.

[0087] In one possible implementation, the battery heat exchanger is located inside the battery compartment.

[0088] Fourthly, an electronic device is provided, comprising a memory and a processor, the memory for storing computer instructions; the processor executes the computer instructions stored in the memory to cause the electronic device to perform the method of the first aspect and its possible implementations.

[0089] Fifthly, a computer-readable storage medium is provided, which stores computer program code, such that when the computer program code is executed by an electronic device, the electronic device performs the method of the first aspect and its possible implementations.

[0090] In a sixth aspect, a computer program product is provided, the computer program product including computer program code, and a method by which the electronic device executes the first aspect and its possible implementations when the computer program code is executed by the electronic device.

[0091] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure.

[0092] In this disclosure, the water circulation rate of the heating system can be adjusted based on the temperature of the battery compartment and the current operating status of the cooling system, thereby controlling the degree of battery temperature regulation. This method of regulating battery temperature satisfies the battery temperature regulation needs while ensuring cooling efficiency within the vehicle cabin to a certain extent, thus maintaining cabin comfort, even when the user activates the cooling system and the battery requires heating. Attached Figure Description

[0093] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0094] Figure 1 This is a schematic diagram of a vehicle temperature control system provided in an embodiment of this disclosure;

[0095] Figure 2 This is a schematic diagram of a vehicle temperature control process provided in an embodiment of this disclosure;

[0096] Figure 3 This is a schematic diagram of the structure of a vehicle temperature control device provided in an embodiment of this disclosure. Detailed Implementation

[0097] To make the objectives, technical solutions, and advantages of this disclosure clearer, the embodiments of this disclosure will be described in further detail below with reference to the accompanying drawings.

[0098] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” “third,” and similar terms used in this patent disclosure and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “an” or “a” and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms “comprising” or “including” and similar terms mean that the elements or objects preceding “comprising” or “including” encompass the elements or objects listed following “comprising” or “including” and their equivalents, and do not exclude other elements or objects. The terms “connected” or “linked” and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms “upper,” “lower,” “left,” “right,” etc., are used only to indicate relative positional relationships, and these relative positional relationships may change accordingly when the absolute position of the described objects changes.

[0099] Figure 1This disclosure provides a vehicle temperature control system, which includes a main heat exchanger 1, a heating system 2, a battery heat exchanger 3, a cooling system 4, a battery compartment 5, a battery 6, and a controller 7. Each component will be described in detail below.

[0100] I. Main heat exchanger 1

[0101] The main heat exchanger 1 has three passages: an air passage, a first liquid passage, and a second liquid passage. The first liquid passage is a water passage, and the second liquid passage is a refrigerant passage. The air passage can be connected to a fan. The main heat exchanger 1 is used to exchange heat with the air in the air passage, thereby regulating the temperature inside the vehicle cabin.

[0102] II. Heating System 2

[0103] Heating system 2 provides heat to the water in the first liquid passage and controls the water circulation rate. Heating system 2 includes an electric heater and a first circulation pump. The electric heater has a first liquid passage for heating the water. The first circulation pump controls the water circulation rate. The first liquid passage in the electric heater is connected in series with the first circulation pump. Heating system 2 also includes a temperature sensor for detecting the temperature of the water in the first liquid passage. Furthermore, heating system 2 includes a fan for blowing air into the main heat exchanger and then into the vehicle compartment.

[0104] III. Battery Heat Exchanger 3

[0105] The battery heat exchanger 3 is used to regulate the temperature of the battery. The battery heat exchanger 3 can be attached to the battery compartment 5 or located inside the battery compartment 5. This embodiment does not limit this.

[0106] IV. Refrigeration System 4

[0107] The refrigeration system 4 includes a compressor and a second circulation pump. The compressor can lower the temperature of the refrigerant by adjusting the pressure. The second circulation pump can control the flow rate of the refrigerant in the second liquid passage.

[0108] V. Battery compartment 5 and battery 6

[0109] Battery 6 is located inside battery compartment 5 and is used to provide energy for the vehicle. When the vehicle is a hybrid vehicle, battery 6 can be charged using energy from the combustion engine or the vehicle's brakes. Battery 6 can be charged in two modes: fast charging and slow charging. In fast charging mode, battery 6 requires a higher temperature to charge.

[0110] Battery compartment 5 has multiple temperature sensors that can monitor the temperature of various parts of battery 6 in real time.

[0111] VI. Controller 7

[0112] The controller 7 can obtain the temperature of various parts of the battery compartment 5 and the working status of the cooling system 4 through multiple temperature sensors on the battery compartment 5.

[0113] The following describes the connections of the various components in the vehicle temperature control system. The first liquid passage of the main heat exchanger 1, the heating system 2, and the battery heat exchanger 3 are connected in series via pipes. The second liquid passage of the main heat exchanger 1 and the refrigeration system 4 are connected in series via pipes. The first liquid passage is a water passage, and the second liquid passage is a refrigerant passage.

[0114] The following describes the operation of the vehicle's temperature control system when the cabin temperature needs to be lowered. The refrigeration system 4 is activated, putting it into operation. The compressor in the refrigeration system 4 lowers the refrigerant temperature. The low-temperature refrigerant in the second liquid passage exchanges heat with the hot air in the air passage, turning the hot air into cold air. This cold air is then blown into the cabin, thereby achieving the purpose of lowering the cabin temperature.

[0115] The following describes the operation of the vehicle's temperature control system when battery temperature needs adjustment. The heating system 2 uses a heater to regulate the temperature of the water in the first liquid passage, and it can also control the flow rate of the water in this passage. The battery heat exchanger 3 has a first liquid passage, which transfers heat from the water in this passage to the battery compartment 5, thereby regulating the temperature of the battery in the battery compartment 5. When the temperature of the water in the first liquid passage of the battery heat exchanger 3 is higher than the temperature of the battery compartment 5, the battery compartment can be heated by the battery heat exchanger 3, thus heating the battery. Conversely, when the temperature of the water in the first liquid passage of the battery heat exchanger 3 is lower than the temperature of the battery compartment 5, the battery compartment can be cooled by the battery heat exchanger 3, thus cooling the battery.

[0116] When the battery temperature needs to be increased and there is a need for cooling in the cabin, that is, when the water temperature in the main heat exchanger 1 is high, the heat carried by the water will reduce the cooling efficiency, which will affect the heat exchange efficiency between the air in the air passage and the refrigerant in the second liquid passage in the main heat exchanger 1, thus affecting the comfort of passengers in the cabin.

[0117] In this embodiment of the disclosure, based on Figure 1 The vehicle temperature control system shown provides a method for vehicle temperature control, the processing flow of which is as follows: Figure 2 As shown, it includes the following steps:

[0118] Step 201: Obtain the current temperature of the battery compartment and the current operating status of the cooling system.

[0119] The current working status includes two states: running or not running. The cooling system running means that the user turns on the vehicle's air conditioning and sets it to cooling mode.

[0120] In addition, the current charging mode of the battery can be obtained. The current charging mode includes both fast charging and slow charging.

[0121] Step 202: Determine the first water circulation flow rate of the heating system based on the current temperature and current operating status.

[0122] A table is pre-established and stored showing the correspondence between the battery compartment's temperature range, the refrigeration system's operating status, and the water circulation rate. Then, based on the battery compartment's current temperature, the temperature range to which this temperature belongs is determined. Using the correspondence table, the corresponding water circulation rate within this temperature range and under the refrigeration system's current operating status is determined, and this water circulation rate is designated as the first water circulation rate.

[0123] Furthermore, when considering the battery charging mode, a table of correspondences between the battery charging mode, the operating status of the cooling system, the temperature range of the battery compartment, and the water circulation flow rate can be pre-established and stored. Then, based on the current temperature of the battery compartment, the temperature range to which that temperature belongs is determined. Finally, using the table of correspondences, the corresponding water circulation flow rate under the current charging mode, the current operating status of the cooling system, and that temperature range is determined, and this water circulation flow rate is designated as the first water circulation flow rate.

[0124] Additionally, the temperature of the water in the first liquid passage can be adjusted to allow for more flexible adjustment of the battery temperature. In this case, a table relating the battery charging mode, the operating status of the cooling system, the temperature range of the battery compartment, and the water temperature and water circulation rate can be pre-established and stored. Then, based on the current temperature of the battery compartment, the temperature range to which this temperature belongs is determined. Using the table, the corresponding water temperature and water circulation rate within this temperature range, under the current charging mode and the current operating status of the cooling system, are determined. This water temperature is then designated as the target water temperature, and the water circulation rate is designated as the first water circulation rate.

[0125] Furthermore, the water circulation speed can be determined by the flow rate ratio, which is the ratio of the water circulation speed in the heating system to the air flow speed in the air passage. The air flow speed is determined based on the vehicle's current air outlet setting, which can be controlled by the user and can be understood as the air conditioning fan speed. Compared to setting the water circulation speed to a fixed value, this approach maximizes the water circulation speed while ensuring passenger comfort, thereby enhancing the regulation of battery temperature. This will be explained in detail below.

[0126] A pre-established and stored table of correspondences between battery charging mode, cooling system operating status, battery compartment temperature range, water temperature, water circulation flow rate, and air flow rate ratio is used. When the current battery compartment temperature is less than or equal to a first temperature threshold, and the cooling system is currently running, the temperature range to which the current temperature belongs and the flow rate ratio corresponding to the current charging mode are determined based on the correspondence between the battery compartment temperature range, battery charging mode, and flow rate ratio. This flow rate ratio is then determined as the target flow rate ratio. A current temperature less than or equal to the first temperature threshold indicates that the battery compartment needs heating. In practice, technicians can set the first temperature threshold according to actual needs; this embodiment does not impose such restrictions. Then, based on the vehicle's current air outlet setting, the current airflow rate in the air passage is determined, and subsequently, based on the current airflow rate and the target flow rate ratio, the first water circulation flow rate is determined. Furthermore, in the correspondence between battery temperature range, battery charging mode, and flow rate ratio, the higher the temperature within the temperature range, the smaller the corresponding flow rate ratio.

[0127] When the current temperature of the battery compartment is greater than or equal to the second temperature threshold, i.e., the battery requires cooling, or the cooling system is not currently operating, the water circulation rate corresponding to the current temperature, current operating state, and current charging mode is determined based on the correspondence between the battery compartment temperature, the cooling system's operating state, the battery's charging mode, and the heating system's water circulation rate. This water circulation rate is then defined as the first water circulation rate. In implementation, technicians can set the second temperature threshold according to actual needs; this embodiment does not impose any limitations on this.

[0128] In addition to heating and cooling requirements, batteries also have a temperature equalization requirement, which means equalizing the temperature of various parts of the battery. When the difference between the highest and lowest temperatures obtained by the controller for various parts of the battery compartment is too large, the battery requires temperature equalization. The temperature equalization requirement is added to the battery compartment requirements in the pre-stored table, and the corresponding water circulation flow rate is set.

[0129] When the current temperature of the battery compartment, i.e., the lowest temperature of each part of the battery compartment, is not within any temperature range included in the corresponding relationship table, the highest and lowest temperatures of different parts of the battery compartment are obtained. When the difference between the highest and lowest temperatures is greater than a third temperature threshold, the pre-stored second water circulation flow rate of the heating system is obtained. For example, the third temperature threshold can be 8°C. In implementation, technicians can set it according to actual needs, and this disclosure embodiment does not impose any restrictions on it.

[0130] The following is an example of the pre-established correspondence table mentioned above. As shown in Table 1, Tmin represents the lowest temperature detected by the temperature sensor in each part of the battery compartment, Tmax represents the highest temperature detected by the temperature sensor in each part of the battery compartment, and the difference represents the difference between Tmin and Tmax.

[0131] Table 1

[0132]

[0133]

[0134] It's easy to see that when the battery compartment requires heating, higher water temperatures and faster water circulation indicate greater temperature regulation. Conversely, when the battery compartment requires cooling, lower water temperatures and faster water circulation indicate greater temperature regulation. The level of regulation can be determined for each charging mode, cooling system operating state, and battery requirement (excluding temperature equalization). The lowest regulation level is Level 1, with higher levels corresponding to greater regulation.

[0135] For example, when the charging mode is slow charging, the cooling system is not running, and the battery compartment requires heating, the adjustment level for a water temperature of 33℃ and a water circulation rate of 12L / min is Level 1; for a water temperature of 35℃ and a water circulation rate of 12L / min, the adjustment level is Level 2; and for a water temperature of 38℃ and a water circulation rate of 12L / min, the adjustment level is Level 3. When the charging mode is slow charging, the cooling system is not running, and the battery compartment requires cooling, the adjustment level for a water temperature of 25℃ and a water circulation rate of 10L / min is Level 1; for a water temperature of 20℃ and a water circulation rate of 12L / min, the adjustment level is Level 2; and for a water temperature of 18℃ and a water circulation rate of 12L / min, the adjustment level is Level 3. The adjustment levels for other charging modes, cooling system operating states, and battery compartment requirements are similar and will not be elaborated further here.

[0136] Step 203: Control the operation of the heating system based on the target water circulation flow rate.

[0137] The target water circulation velocity includes the first water circulation velocity and the second water circulation velocity.

[0138] Based on the target water circulation speed and target water temperature, the heating system is controlled to adjust the water circulation speed to the target water circulation speed and the water temperature to the target water temperature, thereby cooling or heating the battery.

[0139] In addition, a termination temperature can be set. When the termination temperature is reached, the adjustment intensity will be downgraded. When the adjustment intensity level is at the lowest level, the adjustment of the battery temperature will be stopped when the termination temperature is reached.

[0140] Table 2 shows the corresponding relationship for adding termination temperatures.

[0141] Table 2

[0142]

[0143]

[0144] To illustrate this, when the charging mode is slow charging and the cooling system is running, if the difference between the highest and lowest temperatures in the battery compartment is 10°C, and the current highest and lowest temperatures in the battery compartment do not fall within any of the temperature ranges listed in the table above, the water circulation rate will be adjusted to 10L / min. Operation will terminate when the difference between the highest and lowest temperatures in the battery compartment reaches 5°C or below. In the same scenario, if the battery compartment requires heating, when the lowest temperature in the battery compartment is -25°C, the water temperature will be adjusted to 38°C and the water circulation rate to 12L / min. When the lowest temperature in the battery compartment reaches -10°C, the water temperature will be adjusted to 35°C and the water circulation rate to 12L / min. When the lowest temperature in the battery compartment reaches 5°C, the water temperature will be adjusted to 33°C and the water circulation rate to 12L / min. Operation will terminate when the lowest temperature in the battery compartment reaches 10°C. In this scenario, when the battery compartment requires cooling, when the highest temperature of the battery compartment reaches 50°C, the water temperature is adjusted to 18°C ​​and the water circulation rate is adjusted to 12L / min. When the highest temperature of the battery compartment reaches 45°C, the water temperature is adjusted to 35°C and the water circulation rate is adjusted to 12L / min. When the highest temperature of the battery compartment reaches 43°C, the water temperature is adjusted to 33°C and the water circulation rate is adjusted to 12L / min. When the highest temperature of the battery compartment reaches 38°C, the operation is terminated. In other scenarios with other battery compartment requirements, the operation is similar to the above, and this embodiment will not be described in detail.

[0145] The technical solutions provided by the embodiments of this disclosure have at least the following beneficial effects:

[0146] In this embodiment, the water circulation rate of the heating system can be adjusted based on the temperature of the battery compartment and the current operating state of the cooling system, thereby controlling the degree of battery temperature regulation. This method of regulating battery temperature satisfies the battery temperature adjustment needs while ensuring cooling efficiency within the vehicle cabin to a certain extent, thus maintaining cabin comfort, especially when the user activates the cooling system and the battery requires heating.

[0147] Based on the same technical concept, this disclosure provides a vehicle temperature control device, such as... Figure 3 As shown, the device is applied to a controller, which belongs to a vehicle temperature control system. The vehicle temperature control system includes a main heat exchanger, a heating system, a battery heat exchanger, a cooling system, a battery compartment, and a battery.

[0148] The main heat exchanger has a first liquid passage, a second liquid passage, and an air passage. The first liquid passage of the main heat exchanger, the heating system, and the battery heat exchanger are connected in series via pipelines. The second liquid passage of the main heat exchanger and the refrigeration system are connected in series via pipelines.

[0149] The battery heat exchanger is attached to the battery compartment;

[0150] The battery compartment houses the battery;

[0151] The device includes:

[0152] The acquisition module 310 is used to acquire the current temperature of the battery compartment and the current operating status of the refrigeration system, wherein the current operating status includes running or not running;

[0153] The determining module 320 is used to determine the first water circulation flow rate of the heating system based on the current temperature and the current operating state;

[0154] The control module 330 is used to control the operation of the heating system based on the first water circulation flow rate.

[0155] In one possible implementation, the acquisition module 310 is further configured to:

[0156] Obtain the current charging mode of the battery, wherein the current charging mode includes fast charging or slow charging;

[0157] The determining module 320 is used for:

[0158] Based on the current temperature, the current operating state, and the current charging mode, the first water circulation flow rate of the heating system is determined.

[0159] In one possible implementation, the determining module 320 is further configured to:

[0160] Based on the temperature range of the battery compartment, the charging mode of the battery, and the correspondence between water temperature, the temperature range to which the current temperature belongs and the target water temperature corresponding to the current charging mode are determined.

[0161] The control module 330 is used for:

[0162] The heating system is controlled to operate based on the first water circulation flow rate and the target water temperature.

[0163] In one possible implementation, the determining module 320 is configured to:

[0164] When the current temperature is less than or equal to the first temperature threshold and the current working state is running, the temperature range to which the current temperature belongs and the target flow rate ratio corresponding to the current charging mode are determined based on the temperature range of the battery compartment, the corresponding relationship between the charging mode and the flow rate ratio of the battery. Here, the current temperature being less than or equal to the first temperature threshold indicates that the battery compartment needs to be heated, and the flow rate ratio is the ratio of the water circulation flow rate of the heating system to the air flow rate of the air passage.

[0165] Based on the vehicle's current air outlet setting, determine the current airflow velocity in the air passage.

[0166] The first water circulation velocity is determined based on the ratio of the current air velocity to the target velocity.

[0167] In one possible implementation, in the correspondence between the temperature range of the battery compartment, the charging mode of the battery, and the flow rate ratio, the higher the temperature range, the smaller the corresponding flow rate ratio.

[0168] In one possible implementation, the determining module 320 is configured to:

[0169] When the current temperature is greater than or equal to the second temperature threshold, or when the current operating state is not running, the first water circulation rate corresponding to the current temperature, the current operating state, and the current charging mode is determined based on the correspondence between the temperature of the battery compartment, the operating state of the refrigeration system, the charging mode of the battery, and the water circulation rate of the heating system.

[0170] In one possible implementation, the acquisition module 310 is further configured to:

[0171] Obtain the current highest and lowest temperatures of the battery compartment;

[0172] The determining module 320 is further configured to:

[0173] When the difference between the highest temperature and the lowest temperature is greater than a third temperature threshold, the first water circulation flow rate of the heating system is determined.

[0174] In one possible implementation, the first liquid passage is a water passage.

[0175] In one possible implementation, the second liquid passage is a refrigerant passage.

[0176] In one possible implementation, the battery heat exchanger is located inside the battery compartment.

[0177] In this embodiment, the water circulation rate of the heating system can be adjusted based on the temperature of the battery compartment and the current operating state of the cooling system, thereby controlling the degree of battery temperature regulation. This method of regulating battery temperature satisfies the battery temperature adjustment needs while ensuring cooling efficiency within the vehicle cabin to a certain extent, thus maintaining cabin comfort, especially when the user activates the cooling system and the battery requires heating.

[0178] It should be noted that the vehicle temperature control device provided in the above embodiments is only illustrated by the division of the above functional modules when performing vehicle temperature control processing. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above. In addition, the vehicle temperature control device and the vehicle temperature control method embodiments provided in the above embodiments belong to the same concept, and the specific implementation process can be found in the method embodiments, which will not be repeated here.

[0179] In the above embodiments, implementation can be achieved entirely or partially through software, hardware, firmware, or any combination thereof. When implemented in software, it can be implemented entirely or partially in the form of a computer program product. The computer program product includes one or more computer instructions that, when loaded and executed on a device, generate all or part of the processes or functions described in the embodiments of this disclosure. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another via wired (e.g., coaxial cable, fiber optic cable, digital subscriber line) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium accessible to the device or a data storage device such as a server or data center that integrates one or more available media. The available medium can be a magnetic medium (e.g., floppy disk, hard disk, and magnetic tape), an optical medium (e.g., digital video disk (DVD), etc.), or a semiconductor medium (e.g., solid-state drive).

[0180] Those skilled in the art will understand that all or part of the steps of the above embodiments can be implemented by hardware or by a program instructing related hardware. The program can be stored in a computer-readable storage medium, such as a read-only memory, a disk, or an optical disk.

[0181] The above description is only one embodiment of this disclosure and is not intended to limit this disclosure. Any modifications, equivalent substitutions, improvements, etc., made within the principles of this disclosure should be included within the protection scope of this disclosure.

Claims

1. A vehicle temperature control method, characterized in that, The method is applied to a vehicle temperature control system, which includes a main heat exchanger (1), a heating system (2), a battery heat exchanger (3), a cooling system (4), a battery compartment (5), a battery (6), and a controller (7). The main heat exchanger (1) has a first liquid passage, a second liquid passage and an air passage. The first liquid passage of the main heat exchanger (1), the heating system (2) and the battery heat exchanger (3) are connected in series through a pipeline. The second liquid passage of the main heat exchanger (1) and the refrigeration system (4) are connected in series through a pipeline. The battery heat exchanger (3) is attached to the battery compartment (5); The battery compartment (5) houses the battery (6); The method includes: Obtain the current temperature of the battery compartment (5) and the current operating status of the refrigeration system (4), wherein the current operating status includes running or not running; Based on the current temperature and the current operating state, determine the first water circulation flow rate of the heating system (2); The heating system (2) is controlled based on the first water circulation flow rate.

2. The method according to claim 1, characterized in that, The method further includes: Obtain the current charging mode of the battery (6), wherein the current charging mode includes fast charging or slow charging; The determination of the first water circulation velocity of the heating system (2) based on the current temperature and the current operating state includes: Based on the current temperature, the current operating state, and the current charging mode, the first water circulation flow rate of the heating system (2) is determined.

3. The method according to claim 2, characterized in that, The method further includes: Based on the temperature range of the battery compartment (5), the charging mode of the battery (6), and the correspondence between the water temperature, the temperature range to which the current temperature belongs and the target water temperature corresponding to the current charging mode are determined. The operation of the heating system (2) based on the first water circulation flow rate includes: The heating system (2) is controlled to operate based on the first water circulation flow rate and the target water temperature.

4. The method according to claim 1, characterized in that, The first liquid passage is a water passage.

5. The method according to claim 1, characterized in that, The second liquid passage is the refrigerant passage.

6. A vehicle temperature control system, characterized in that, The vehicle temperature control system includes a main heat exchanger (1), a heating system (2), a battery heat exchanger (3), a cooling system (4), a battery compartment (5), a battery (6), and a controller (7); The main heat exchanger (1) has a first liquid passage, a second liquid passage and an air passage. The first liquid passage of the main heat exchanger (1), the heating system (2) and the battery heat exchanger (3) are connected in series through a pipeline. The second liquid passage of the main heat exchanger (1) and the refrigeration system (4) are connected in series through a pipeline. The battery heat exchanger (3) is attached to the battery compartment (5); The battery compartment (5) houses the battery (6); The controller (7) is used for: Obtain the current temperature of the battery compartment (5) and the current operating status of the refrigeration system (4), wherein the current operating status includes running or not running; Based on the current temperature and the current operating state, determine the first water circulation flow rate of the heating system (2); The heating system (2) is controlled based on the first water circulation flow rate.

7. A vehicle temperature control device, characterized in that, The device is applied to the controller (7), which belongs to the vehicle temperature control system. The vehicle temperature control system includes a main heat exchanger (1), a heating system (2), a battery heat exchanger (3), a cooling system (4), a battery compartment (5), and a battery (6). The main heat exchanger (1) has a first liquid passage, a second liquid passage and an air passage. The first liquid passage of the main heat exchanger (1), the heating system (2) and the battery heat exchanger (3) are connected in series through a pipeline. The second liquid passage of the main heat exchanger (1) and the refrigeration system (4) are connected in series through a pipeline. The battery heat exchanger (3) is attached to the battery compartment (5); The battery compartment (5) houses the battery (6); The device includes: The acquisition module is used to acquire the current temperature of the battery compartment (5) and the current working status of the refrigeration system (4), wherein the current working status includes running or not running; The determination module is used to determine the first water circulation flow rate of the heating system (2) based on the current temperature and the current operating state; The control module is used to control the operation of the heating system (2) based on the first water circulation flow rate.

8. An electronic device, characterized in that, The electronic device includes a memory and a processor, the memory being used to store computer instructions; The processor executes computer instructions stored in the memory to cause the electronic device to perform the method of any one of claims 1 to 5.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer program code, which, when executed by an electronic device, performs the method described in any one of claims 1 to 5.

10. A computer program product, characterized in that, The computer program product includes computer program code, which, when executed by an electronic device, performs the method described in any one of claims 1 to 5.

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