Low-temperature starting battery module control method, battery module and storage medium

Abstract

The invention relates to the technical field of energy storage optimization, and provides a low-temperature starting battery module control method, a battery module and a storage medium. The method comprises the following steps: acquiring stresses of a first lithium battery module and a second lithium battery module; determining real-time temperatures of the first lithium battery module and the second lithium battery module based on the stress of the first lithium battery module and the second lithium battery module; and based on the real-time temperature, the first heating element and the second heating element are controlled to work. According to the control method for starting the battery module at the low temperature, the intelligent degree of heating of the lithium battery module is improved, the real-time temperature of the lithium battery module is directly determined through the stress, and compared with the mode that the temperature of the lithium battery module is detected through a temperature sensor and the like, the control method is more intelligent.

Description

Technical Field

[0001] The present application relates to the technical field of low-temperature starting of batteries, and in particular to a low-temperature starting battery module control method, a battery module and a storage medium. Background Art

[0002] Lithium batteries are prone to capacity loss, inability to start, inability to discharge, etc. in low temperature environments. In order to ensure the normal operation of lithium batteries, lithium batteries need to be heated to keep the temperature of the lithium batteries within an appropriate range.

[0003] The intelligence level of lithium battery heating methods in related technologies needs to be improved. Summary of the invention

[0004] The present application aims to solve at least one of the technical problems existing in the related art. To this end, the present application proposes a low-temperature starting battery module control method, a battery module and a storage medium.

[0005] According to the low-temperature starting battery module control method of the first aspect of the present application, the method is applied to a lithium battery module, wherein the lithium battery module comprises a first lithium battery module, a second lithium battery module, a first stress detection component, a second stress detection component and a heating element, wherein the heating element comprises a first heating element and a second heating element, wherein the first stress detection component is installed on the first lithium battery module, the first stress detection component is used to detect the stress of the first lithium battery module, the second stress detection component is installed on the second lithium battery module, the second stress detection component is used to detect the stress of the second lithium battery module, the first heating element is connected to the first lithium battery module, and the second heating element is connected to the second lithium battery module;

[0006] The control method comprises:

[0007] Obtaining stresses of the first lithium battery module and the second lithium battery module;

[0008] Determining the real-time temperature of the first lithium battery module and the second lithium battery module based on the stress of the first lithium battery module and the second lithium battery module;

[0009] Based on the real-time temperature, operations of the first heating element and the second heating element are controlled.

[0010] According to one embodiment of the present application, the step of determining the real-time temperature of the first lithium battery module and the second lithium battery module based on the stress of the first lithium battery module and the second lithium battery module includes:

[0011] Based on the real-time stress of the first lithium battery module, the real-time stress of the second lithium battery module and a stress database, the real-time temperatures of the first battery cell module and the second lithium battery module are determined, wherein the stress database includes the stress of the lithium battery module at different temperatures.

[0012] According to one embodiment of the present application, the step of determining the real-time temperature of the first lithium battery module and the second lithium battery module based on the stress of the first lithium battery module and the second lithium battery module includes:

[0013] The real-time temperatures of the first and second lithium battery modules are determined based on the real-time stress of the first lithium battery module, the real-time stress of the second lithium battery module, the health status of the first lithium battery module, the health status of the second lithium battery module, and a status database, wherein the status database includes the stress of the lithium battery modules of lithium battery modules in different health status at different temperatures.

[0014] According to the battery module of the second aspect embodiment of the present application, the battery module includes a first lithium battery module, a second lithium battery module, a first stress detection component, a second stress detection component and a heating element, the heating element includes a first heating element and a second heating element, the first stress detection component is installed on the first lithium battery module, the first stress detection component is used to detect the stress of the first lithium battery module, the second stress detection component is installed on the second lithium battery module, the second stress detection component is used to detect the stress of the second lithium battery module, the first heating element is connected to the first lithium battery module, and the second heating element is connected to the second lithium battery module.

[0015] According to the third aspect of the present application, a low-temperature starting battery module control device includes:

[0016] An acquisition module, used to acquire the stress of the first lithium battery module and the second lithium battery module;

[0017] A determination module, configured to determine the real-time temperature of the first lithium battery module and the second lithium battery module based on the stress of the first lithium battery module and the second lithium battery module;

[0018] A control module is used to control the operation of the first heating element and the second heating element based on the real-time temperature.

[0019] According to the electronic device of the fourth aspect embodiment of the present application, it includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and the processor implements the above-mentioned low-temperature starting battery module control method when executing the computer program.

[0020] According to the non-transitory computer-readable storage medium of the fifth aspect embodiment of the present application, the non-transitory computer-readable storage medium includes a computer program, and when the computer program is executed by the processor, the above-mentioned low-temperature starting battery module control method is implemented.

[0021] According to the computer program product of the sixth aspect of the present application, the computer program product includes a computer program, and when the computer program is executed by the processor, the above-mentioned low-temperature starting battery module control method is implemented.

[0022] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related technologies, the drawings required for use in the embodiments or the related technical descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a flow chart of the low temperature starting battery module control method of the present invention;

[0025] Figure 2 It is a structural schematic diagram of the lithium battery module provided by the present invention;

[0026] Figure 3 is a structural schematic diagram of a hybrid vehicle provided by the present invention;

[0027] Figure 4 It is a partial structural schematic diagram of a hybrid vehicle provided by the present invention;

[0028] Figure 5 It is a structural schematic diagram of a low-temperature starting battery module control device provided by the present invention;

[0029] Figure 6 It is a structural schematic diagram of the electronic device provided by the present invention. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of this application clearer, the technical solutions in this application will be clearly and completely described below in conjunction with the drawings in this application. Obviously, the described embodiments are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0031] The embodiments of the present application provide an embodiment of a low-temperature starting battery module control method. It should be noted that although the logical order is shown in the flow chart, under certain data, the steps shown or described can be completed in an order different from that here.

[0032] Before introducing the low-temperature starting battery module control method of the embodiment of the present application, the application scenario of the low-temperature starting battery module control method is first explained. The low-temperature starting battery module control method of the present application can be applied to smart terminals such as smart phones, tablets and computers, and can also be applied to servers. The present application does not make any special limitations here, as long as it can carry and implement the low-temperature starting battery module control method of the present application.

[0033] The following description will be given by applying the low-temperature starting battery module control method to the server side, but it should be understood that the low-temperature starting battery module control method is not limited to being applied only to the server side.

[0034] Combine the following Figures 1 to 6 The present invention describes a low-temperature starting battery module control method, a battery module, and a storage medium.

[0035] According to the embodiment of the first aspect of the present application, Figure 1 and Figure 2 As shown, a low-temperature starting battery module control method is applied to a battery module 50, wherein the battery module 50 includes a first lithium battery module 501, a second lithium battery module 502, a first stress detection component 503, a second stress detection component and a heating element 505, wherein the heating element 505 includes a first heating element 5051 and a second heating element 5052, wherein the first stress detection component 503 is installed on the first lithium battery module 501, and the first stress detection component 503 is used to detect the stress of the first lithium battery module 501, and the second stress detection component is installed on the second lithium battery module 502, and the second stress detection component is used to detect the stress of the second lithium battery module 502, wherein the first heating element 5051 is connected to the first lithium battery module 501, and the second heating element 5052 is connected to the second lithium battery module 502, and the low-temperature starting battery module control method includes:

[0036] Step 101, obtaining stress of the first lithium battery module 501 and the second lithium battery module 502;

[0037] Step 102: determining the real-time temperature of the first lithium battery module 501 and the second lithium battery module 502 based on the stress of the first lithium battery module 501 and the second lithium battery module 502;

[0038] Step 103: Based on the real-time temperature, control the operation of the first heating element 5051 and the second heating element 5052.

[0039] According to the low-temperature starting battery module control method of the present application, when the lithium battery module 50 is at different temperatures, the state of the lithium battery module 50 will also be different, and the different states of the lithium battery module 50 will cause different stresses of the lithium battery module 50, that is, the real-time temperature of the lithium battery module 50 can be determined based on the stress of the lithium battery module 50.

[0040] Therefore, the stress of the first lithium battery module 501 and the second lithium battery module 502 is first obtained, and then the real-time temperature of the first lithium battery module 501 and the real-time temperature of the second lithium battery module 502 are determined according to the stress of the first lithium battery module 501 and the stress of the second lithium battery module 502. According to the real-time temperature, it can be determined whether the temperature of the first lithium battery module 501 and the second lithium battery module 502 is too low, that is, whether the first lithium battery module 501 and the second lithium battery module 502 need to be heated, and then the operation of the first heating element 5051 and the second heating element 5052 is controlled, thereby improving the intelligent degree of heating of the lithium battery module 50. And directly determining the real-time temperature of the lithium battery module 50 by stress is more intelligent than detecting the temperature of the lithium battery module 50 by using a temperature sensor or the like.

[0041] It is understandable that when the real-time temperature of the first lithium battery module 501 is lower than the preset temperature, the first heating element 5051 is controlled to be powered so that the first heating element 5051 works to increase the temperature of the first lithium battery module 501 .

[0042] It is understandable that a mapping relationship between the stress and the real-time temperature of the lithium battery module 50 may be established in advance, so as to directly obtain the real-time temperature of the lithium battery module 50 according to the stress of the lithium battery module 50 .

[0043] In some examples, a strain gauge may be provided on the outer wall surface of the lithium battery module 50 , and the stress of the lithium battery module 50 may be determined according to the strain amount of the strain gauge.

[0044] In some examples, the lithium battery module 50 includes a main body and a steel belt 504 sleeved on the main body, and the first stress detection component 503 includes a strain gauge 5031, which is arranged on the steel belt 504, and the stress of the lithium battery module 50 is determined according to the strain amount of the strain gauge 5031.

[0045] In one embodiment of the present application, based on the stress of the first lithium battery module 501 and the second lithium battery module 502, the step of determining the real-time temperature of the first lithium battery module 501 and the second lithium battery module 502 includes:

[0046] Based on the real-time stress of the first lithium battery module 501, the real-time stress of the second lithium battery module 502 and the stress database, the real-time temperature of the first battery module 501 and the second lithium battery module 502 is determined, wherein the stress database includes the stress of the lithium battery module 50 at different temperatures.

[0047] It can be understood that by comparing the real-time stress of the first lithium battery module 501 with the stress database, the real-time temperature of the first lithium battery module 501 can be determined, and by comparing the real-time stress of the second lithium battery module 502 with the stress database, the real-time temperature of the second lithium battery module 502 can be determined.

[0048] In one embodiment of the present application, based on the stress of the first lithium battery module 501 and the second lithium battery module 502, the step of determining the real-time temperature of the first lithium battery module 501 and the second lithium battery module 502 includes:

[0049] Based on the real-time stress of the first lithium battery module 501, the real-time stress of the second lithium battery module 502, the health status of the first lithium battery module 501, the health status of the second lithium battery module 502 and the status database, the real-time temperature of the first lithium battery module 501 and the second lithium battery module 502 is determined, wherein the status database includes the stress of the lithium battery module 50 in different health status at different temperatures.

[0050] It is understandable that the temperature and health status of the lithium battery module 50 will affect the stress of the lithium battery module 50. Therefore, the real-time stress of the first lithium battery module 501 and the health status of the first lithium battery module 501 are first obtained, and the real-time stress of the first lithium battery module 501 and the health status of the first lithium battery module 501 are compared with the status database, and then the real-time temperature of the first lithium battery module 501 is determined, thereby improving the detection accuracy of the real-time temperature of the first lithium battery module 501.

[0051] First, the real-time stress of the second lithium battery module 502 and the health status of the second lithium battery module 502 are obtained, and the real-time stress of the second lithium battery module 502 and the health status of the second lithium battery module 502 are compared with the status database, and then the real-time temperature of the second lithium battery module 502 is determined, thereby improving the detection accuracy of the real-time temperature of the second lithium battery module 502.

[0052] In some embodiments, the steps of controlling the operation of the first heating element 5051 and the second heating element 5052 include:

[0053] The first lithium battery module 501 is controlled to supply power to the second heating element 5052 , so that the second heating element 5052 heats the second lithium battery module 502 .

[0054] When the temperature of the second lithium battery module 502 reaches a preset temperature, the first lithium battery module 501 is controlled to stop supplying power to the second heating element 5052 .

[0055] It can be understood that by controlling the first lithium battery module 501 to supply power to the second heating element 5052, the second lithium battery module 502 is in a non-working state. The second heating element 5052 starts to work to heat the second lithium battery module 502 and increase the temperature of the second lithium battery module 502. The temperature of the second lithium battery module 502 is detected. When it is determined that the temperature of the second lithium battery module 502 reaches the preset temperature, it means that the second lithium battery module 502 can work normally at this time, so the first lithium battery module 501 is controlled to stop supplying power to the second heating element 5052. In this way, part of the lithium battery module 50 is used to heat another part of the lithium battery module 50, thereby improving the intelligent degree of heating the lithium battery module 50.

[0056] It can be understood that the ambient temperature or the temperature of the lithium battery module 50 is detected by using a temperature sensor. When it is determined that the ambient temperature or the temperature of the lithium battery module 50 is lower than the preset temperature and greater than the minimum temperature, it means that the temperature will affect the lithium battery module 50 at this time, but the lithium battery module 50 still has a certain discharge capacity. At this time, the first lithium battery module 501 is controlled to supply power to the second heating element 5052.

[0057] In one embodiment of the present application, after the step of controlling the first lithium battery module 501 to stop supplying power to the second heating element 5052, the following steps are included:

[0058] The second lithium battery module 502 is controlled to supply power to the second heating element 5052 , so that the second heating element 5052 heats the second lithium battery module 502 .

[0059] It is understandable that when the temperature of the second lithium battery module 502 reaches the preset temperature, it means that the second lithium battery module 502 can work normally at this time, so the first lithium battery module 501 is controlled to stop supplying power to the second heating element 5052. At this time, the second lithium battery module 502, which can work normally, is controlled to supply power to the second heating element 5052, so that the second heating element 5052 continues to heat the second lithium battery module 502, so that the temperature of the second lithium battery module 502 can be maintained at the preset temperature, realizing the use of the power of the second lithium battery module 502 to keep itself warm, and ensuring that the second lithium battery module 502 can continue to work normally.

[0060] In one embodiment of the present application, after the step of controlling the first lithium battery module 501 to stop supplying power to the second heating element 5052, the following steps are included:

[0061] Determine the temperature change rate of the second lithium battery module 502 based on the temperature of the second lithium battery module 502 at different time points;

[0062] Based on the temperature change rate of the second lithium battery module 502 , the power supply to the second heating element 5052 is controlled.

[0063] It is understandable that after the second lithium battery module 502 reaches the preset temperature, the first lithium battery module 501 is controlled to stop supplying power to the second heating element 5052, that is, at this time, the second heating element 5052 will not heat the second lithium battery module 502. Then the temperature of the second lithium battery module 502 will continue to drop. By obtaining the temperature of the second lithium battery module 502 at different time points, the temperature change rate of the second lithium battery module 502 can be determined, that is, the temperature drop rate of the second lithium battery module 502 under the current environment can be determined. Then, based on the temperature change rate of the second lithium battery module 502, the working power of the second heating element 5052 can be determined, and then the power supply to the second heating element 5052 can be controlled, so that the heat generated by the second heating element 5052 can offset the temperature change of the second lithium battery module 502, so that the second lithium battery module 502 maintains a constant temperature.

[0064] It is understandable that the greater the temperature change rate of the second lithium battery module 502 is, the greater the power supply voltage to the second heating element 5052 is, so as to ensure that the second heating element 5052 can keep the second lithium battery module 502 at a constant temperature.

[0065] In one embodiment of the present application, after the step of controlling the first lithium battery module 501 to stop supplying power to the second heating element 5052, the following steps are included:

[0066] The second lithium battery module 502 is controlled to supply power to the first heating element 5051 , so that the first heating element 5051 heats the first lithium battery module 501 .

[0067] It can be understood that when the temperature of the second lithium battery module 502 reaches the preset temperature, the second lithium battery module 502 is controlled to supply power to the first heating element 5051, so that the first heating element 5051 can heat the first lithium battery module 501, increase the temperature of the first lithium battery module 501, and enable the first lithium battery module 501 to work normally.

[0068] In one embodiment of the present application, after the step of controlling the second lithium battery module 502 to supply power to the first heating element 5051 so that the first heating element 5051 heats the first lithium battery module 501, the method includes:

[0069] When the temperature of the first lithium battery module 501 reaches a preset temperature, the second lithium battery module 502 is controlled to stop supplying power to the first heating element 5051;

[0070] Determine the temperature change rate of the first lithium battery module 501 based on the temperature of the first lithium battery module 501 at different time points;

[0071] Based on the temperature change rate of the first lithium battery module 501 , the power supply to the first heating element 5051 is controlled.

[0072] It is understandable that after the first lithium battery module 501 reaches the preset temperature, the second lithium battery module 502 is controlled to stop supplying power to the first heating element 5051, that is, at this time, the first heating element 5051 will not heat the first lithium battery module 501. Then the temperature of the first lithium battery module 501 will continue to drop. By obtaining the temperature of the first lithium battery module 501 at different time points, the temperature change rate of the first lithium battery module 501 can be determined, that is, the temperature drop rate of the first lithium battery module 501 under the current environment can be determined. Then, based on the temperature change rate of the first lithium battery module 501, the working power of the first heating element 5051 can be determined, and then the power supply to the first heating element 5051 can be controlled, so that the heat generated by the first heating element 5051 can offset the temperature change of the first lithium battery module 501, so that the first lithium battery module 501 maintains a constant temperature.

[0073] It is understandable that the greater the temperature change rate of the first lithium battery module 501 is, the greater the power supply voltage to the first heating element 5051 is, so as to ensure that the first heating element 5051 can keep the first lithium battery module 501 at a constant temperature.

[0074] In one embodiment of the present application, after the step of controlling the second lithium battery module 502 to supply power to the first heating element 5051 so that the first heating element 5051 heats the first lithium battery module 501, the method includes:

[0075] When the temperature of the first lithium battery module 501 reaches a preset temperature, the ambient temperature and the real-time output power of the first lithium battery module 501 are obtained;

[0076] Determine the working power of the first heating element 5051 based on the ambient temperature and the real-time output power of the first lithium battery module 501;

[0077] Based on the operating power of the first heating element 5051 , the power supply to the first heating element 5051 is controlled.

[0078] It is understandable that the first lithium battery module 501 will also generate a certain amount of heat when working. The greater the output power of the first lithium battery module 501, the more heat the first lithium battery module 501 generates.

[0079] The ambient temperature will affect the natural cooling speed of the first lithium battery module 501 . The lower the ambient temperature, the more obvious the cooling of the first lithium battery module 501 will be.

[0080] Therefore, according to the ambient temperature and the real-time output power of the first lithium battery module 501, the heat required by the first lithium battery to maintain a constant temperature can be determined, and then the working power of the first heating element 5051 can be determined. Then, according to the working power of the first heating element 5051, the power supply of the first heating element 5051 is controlled so that the first heating element 5051 works at the working power, so that the first lithium battery module 501 can maintain a constant temperature under the action of the first heating element 5051.

[0081] In one embodiment of the present application, after the step of controlling the first lithium battery module 501 to stop supplying power to the second heating element 5052, the following steps are included:

[0082] Acquire the ambient temperature and the real-time output power of the second lithium battery module 502;

[0083] Determine the operating power of the second heating element 5052 based on the ambient temperature and the real-time output power of the second lithium battery module 502;

[0084] Based on the operating power of the second heating element 5052, the power supply to the second heating element 5052 is controlled.

[0085] It is understandable that the second lithium battery module 502 will also generate a certain amount of heat when working. The greater the output power of the second lithium battery module 502, the more heat the second lithium battery module 502 generates.

[0086] The ambient temperature will affect the natural cooling speed of the second lithium battery module 502 . The lower the ambient temperature, the more obvious the cooling of the second lithium battery module 502 will be.

[0087] Therefore, according to the ambient temperature and the real-time output power of the second lithium battery module 502, the heat required by the second lithium battery to maintain a constant temperature can be determined, and then the working power of the second heating element 5052 can be determined. Then, according to the working power of the second heating element 5052, the power supply of the second heating element 5052 is controlled so that the second heating element 5052 works at the working power, so that the second lithium battery module 502 can maintain a constant temperature under the action of the second heating element 5052.

[0088] In one embodiment of the present application, there are multiple first lithium battery modules 501, and there are multiple second heating elements 5052, and the first lithium battery modules 501 and the second heating elements 5052 correspond to each other one by one;

[0089] The step of controlling the first lithium battery module 501 to supply power to the second heating element 5052 includes: determining a target number of second heating elements 5052 based on the real-time temperature of the second lithium battery module 502;

[0090] Controlling the power supply to the target number of second heating elements 5052.

[0091] It is understandable that, according to the real-time temperature of the second lithium battery module 502, it is possible to determine how many second heating elements 5052 are needed to heat the second lithium battery module 502 to the preset temperature, that is, to determine the target number. Then, the target number of second heating elements 5052 is controlled to be powered, so that the target number of second heating elements 5052 start to work, and the target number of second heating elements 5052 heats the second lithium battery module 502, ensuring that the temperature of the second lithium battery module 502 can be raised to the preset temperature.

[0092] It can be understood that the first lithium battery module 501 and the second heating element 5052 are connected one-to-one. After determining the target number of second heating elements 5052, the first lithium battery module 501 corresponding to the target number of second heating elements 5052 is controlled to start powering, so that the target number of second heating elements 5052 can start working under the power supply of the corresponding first lithium battery module 501.

[0093] In some embodiments, the low temperature starting battery module control method is applied to a hybrid vehicle, the hybrid vehicle includes a lithium battery module 50, an engine and a heat exchange component, the heat exchange component connects the lithium battery module 50 and the engine, and the heat exchange component is suitable for transferring heat from the engine to the lithium battery module 50. The control method includes:

[0094] Step 101, control the engine to work and control the lithium battery module 50 to not work;

[0095] Step 102 : When the temperature of the lithium battery module 50 reaches a preset temperature, the lithium battery module 50 is controlled to start working.

[0096] According to the control method of the present application, when it is determined that the temperature of the lithium battery module 50 is lower than the preset temperature, it means that the performance of the lithium battery module 50 is affected by the temperature. The engine is controlled to work first, while the lithium battery module 50 is not working. The engine generates heat when working, and the heat exchange component can transfer the heat generated by the engine to the lithium battery module 50 to achieve heating of the lithium battery module 50.

[0097] The temperature of the lithium battery module 50 is detected. When it is determined that the temperature of the lithium battery module 50 reaches the preset temperature, it means that the lithium battery module 50 can work normally at this time, so the lithium battery module 50 is controlled to start working. In other words, the present application uses the temperature generated by the engine to heat the lithium battery module 50. When the temperature of the lithium battery module 50 reaches the preset temperature, the lithium battery module 50 is controlled to start working, so as to avoid the lithium battery module 50 being affected by the temperature and causing the battery life to be shortened, and at the same time, the intelligent degree of heating the lithium battery module 50 is also improved.

[0098] In some examples, the heat exchange assembly includes a heat exchange pipe, which is connected to the cooling channel of the engine, that is, the cooling medium of the engine flows along the heat exchange pipe, and the heat exchange pipe is arranged around the lithium battery module 50, so that the heat at the engine can be transferred to the lithium battery module 50. It should be noted that the heat at the engine can also be transferred to the lithium battery module 50 in any other suitable way.

[0099] In one embodiment of the present application, the hybrid vehicle further includes a motor, and the heat exchange component is connected to the motor, and the heat exchange component is suitable for transferring heat from the motor to the lithium battery module 50 .

[0100] It is understandable that the heat exchange component can transfer the heat at the motor to the lithium battery module 50, so as to utilize the heat of the motor to heat and keep the lithium battery module 50 warm, thereby recycling the heat of the motor.

[0101] In some examples, the heat exchange component includes a heat exchange pipe, which is connected to the cooling flow path of the motor, that is, the heat exchange medium of the motor flows through the heat exchange pipe, and the heat exchange pipe is arranged around the lithium battery module 50, so that the heat at the motor can be transferred to the lithium battery module 50. It should be noted that the heat at the motor can also be transferred to the lithium battery module 50 in any other suitable way.

[0102] In one embodiment of the present application, the hybrid vehicle further includes a temperature difference power generation component and a heating element 505, the heating element 505 is connected to the lithium battery module 50, one end of the temperature difference power generation component is located inside the vehicle, and the other end of the temperature difference power generation component is located outside the vehicle, the temperature difference power generation component is connected to the heating element 505, and the temperature difference power generation component is used to supply power to the heating element 505.

[0103] It can be understood that the temperature difference power generation component can generate electricity using the temperature difference between the inside and outside of the vehicle, and use the generated electricity to power the heating element 505, so that the heating element 505 can heat the lithium battery module 50 to increase the temperature of the lithium battery module 50, prevent the temperature of the lithium battery module 50 from being lower than the preset temperature, and ensure that the lithium battery module 50 can operate normally.

[0104] In some examples, one end of the thermoelectric power generation component is located at the engine to increase the temperature difference between the two ends of the thermoelectric power generation component and improve the power generation effect of the thermoelectric power generation component. While using the heat from the engine to heat the lithium battery module 50, the thermoelectric power generation component can also be used to power the heating element 505, so that the heating element 505 heats the lithium battery module 50, achieving double heating of the lithium battery module 50 and improving the heating effect of the lithium battery module 50.

[0105] In one embodiment of the present application, the hybrid vehicle further includes a photovoltaic power generation module, which is disposed on the roof of the vehicle and connected to the heating element 505 , and is used to supply power to the heating element 505 .

[0106] It is understandable that a photovoltaic power generation module is set on the roof, which can generate electricity and supply power to the heating element 505, so that the heating element 505 can heat the lithium battery module 50, increase the temperature of the lithium battery module 50, and ensure that the lithium battery module 50 can work normally.

[0107] In one embodiment of the present application, the control method further includes:

[0108] It is determined that the temperature of the lithium battery module 50 reaches a preset temperature, and the photovoltaic power generation module is controlled to charge the lithium battery module 50 .

[0109] It is understandable that when the temperature of the lithium battery module 50 reaches the preset temperature, the photovoltaic power generation module is controlled to charge the lithium battery module 50 to prevent the heating element 505 from continuing to work and causing the temperature of the lithium battery module 50 to be too high, while also improving the battery life of the lithium battery module 50.

[0110] In one embodiment of the present application, Figure 3 As shown, the hybrid vehicle also includes a wind power generation module 5. The hybrid vehicle is formed with an installation cavity 11 and a first air duct 12 connecting the installation cavity 11 and the outside. The wind power generation module 5 is installed in the installation cavity 11. The wind power generation module 5 is electrically connected to the heating element 505. The wind power generation module 5 is used to supply power to the heating element 505.

[0111] It is understandable that when the wind power generation module 5 is provided in the hybrid vehicle, a large amount of wind will enter the installation cavity 11 through the first air duct 12 during the driving of the vehicle, so that the wind power generation module 5 can generate electricity and supply power to the heating element 505, so that the heating element 505 can heat the lithium battery module 50, thereby ensuring that the lithium battery module 50 can work normally.

[0112] In one embodiment of the present application, a lithium battery control method includes:

[0113] It is determined that the temperature of the lithium battery module 50 reaches a preset temperature, and the wind power generation module 5 is controlled to charge the lithium battery module 50 .

[0114] It is understandable that when the temperature of the lithium battery module 50 reaches the preset temperature, the wind power generation module 5 is controlled to charge the lithium battery module 50 to prevent the heating element 505 from continuing to work and causing the temperature of the lithium battery module 50 to be too high, while also improving the battery life of the lithium battery module 50.

[0115] In one embodiment of the present application, Figure 3 As shown, the hybrid vehicle also includes a vehicle body 1 and an air collecting hood 6 . The vehicle body 1 is formed with a mounting cavity 11 and a first air duct 12 . The air collecting hood 6 is mounted on the vehicle body 1 . The air outlet of the air collecting hood 6 is connected to the air inlet of the first air duct 12 . The air collecting hood 6 is suitable for directing external wind to the first air duct 12 .

[0116] It can be understood that the wind is gathered by the first wind gathering hood 6 so that the wind is more concentratedly delivered to the wind power generation module 5, thereby effectively improving the power generation efficiency.

[0117] In one embodiment of the present application, the cross-sectional area of ​​the first air duct 12 gradually decreases along the direction from the air collecting cover 6 to the installation cavity 11 .

[0118] It can be understood that the wind flows into the first air duct 12 after passing through the wind collecting hood 6, and then the wind will flow along the first air duct 12 to the installation cavity 11. Since the cross-sectional area of ​​the first air duct 12 gradually decreases along the flow direction of the wind, the wind speed gradually increases, thereby increasing the wind speed flowing into the installation cavity 11, which can improve the efficiency of wind power generation.

[0119] In one embodiment of the present application, Figure 3 As shown, the vehicle body 1 is formed with a second air duct 13 , and the guide section 121 of the first air duct 12 is connected to the outside through the second air duct 13 , and the cross-sectional area of ​​the guide section 121 is smaller than the cross-sectional area of ​​the air outlet of the first air duct 12 .

[0120] It can be understood that the cross-sectional area of ​​the air outlet of the first air duct 12 is larger than the cross-sectional area of ​​the guide section 121 of the first air duct 12, and the gas flow rate at the air outlet of the first air duct 12 will be smaller than the gas flow rate at the guide section 121. The second air duct 13 is connected to the guide section 121 of the first air duct 12. Then, under the action of negative pressure, the external air flow will flow into the first air duct 12 through the second air duct 13, and then flow out from the air outlet of the first air duct 12 together, thereby increasing the air outlet at the air outlet of the first air duct 12, which can effectively improve the wind power generation effect.

[0121] In one embodiment of the present application, the guide section 121 is located at a position where the cross-sectional area of ​​the first air duct 12 is the smallest.

[0122] It can be understood that the second air duct 13 connects the position with the smallest cross-sectional area of ​​the first air duct 12 and the outside world, thereby ensuring that the gas flow rate at the drainage section 121 is the fastest in the entire first air duct 12, so that a negative pressure can be formed in the second air duct 13, ensuring that the external gas can flow into the first air duct 12 through the second air duct 13 under the action of negative pressure.

[0123] In one embodiment of the present application, Figure 4 As shown, hybrid vehicles also include:

[0124] The magnetic conductive heating element 60 is connected to the lithium battery module 50;

[0125] The coil 70 is provided on the magnetic heating element 60;

[0126] The insulating member 80 is provided between the coil 70 and the magnetic heating member 60;

[0127] The coil 70 is also suitable for generating an alternating magnetic field under the action of alternating current, so that the magnetic heating element 60 generates heat under the action of the alternating magnetic field.

[0128] It can be understood that when alternating current is transmitted to the coil 70, the coil 70 will generate an alternating magnetic field under the action of the alternating current. At this time, the magnetic heating element 60 is in the alternating magnetic field, and the magnetic heating element 60 will generate heat under the action of the alternating magnetic field, thereby achieving rapid heating of the magnetic heating element 60. The magnetic heating element 60 transfers the heat to the lithium battery module 50, thereby achieving heating of the lithium battery module 50.

[0129] At the same time, the lithium battery module 50 is heated by electromagnetic heating. Since the magnetic heating element 60 has a fast heating speed, the lithium battery module 50 can be heated quickly.

[0130] In some embodiments, a phase change material module is further provided between the first lithium battery module and the second lithium battery module. When the temperature of the first lithium battery module and the second lithium battery module is lower than the phase change temperature of the phase change material module, the phase change material module automatically releases the phase change latent heat through solid-liquid phase change to maintain the temperature of the first lithium battery module and the second lithium battery module.

[0131] According to the embodiment of the second aspect of the present application, the low temperature starting battery module control device and the low temperature starting battery module control method correspond to each other. Figure 5 As shown, the low temperature starting battery module control device includes:

[0132] An acquisition module 201 is used to acquire stresses of the first lithium battery module 501 and the second lithium battery module 502;

[0133] A determination module 202, configured to determine the real-time temperature of the first lithium battery module 501 and the second lithium battery module 502 based on the stress of the first lithium battery module 501 and the second lithium battery module 502;

[0134] The control module 203 is used to control the operation of the first heating element 5051 and the second heating element 5052 based on the real-time temperature.

[0135] According to an embodiment of the third aspect of the present application, the battery module 50 includes a first lithium battery module 501, a second lithium battery module 502, a first stress detection component 503, a second stress detection component, a first heating element 5051 and a second heating element 5052, the first stress detection component 503 is installed on the first lithium battery module 501, the first stress detection component 503 is used to detect the stress of the first lithium battery module 501, the second stress detection component is installed on the second lithium battery module 502, the second stress detection component is used to detect the stress of the second lithium battery module 502, the first heating element 5051 is connected to the first lithium battery module 501, and the second heating element 5052 is connected to the second lithium battery module 502.

[0136] According to an embodiment of the fourth aspect of the present application, Figure 6 As shown, the electronic device may include: a processor 310, a communication interface 320, a memory 330 and a communication bus 340, wherein the processor 310, the communication interface 320 and the memory 330 communicate with each other through the communication bus 340. The processor 310 may call the logic instructions in the memory 330 to execute the low temperature starting battery module control method, which includes:

[0137] Obtaining stresses of the first lithium battery module 501 and the second lithium battery module 502;

[0138] Determine the real-time temperature of the first lithium battery module 501 and the second lithium battery module 502 based on the stress of the first lithium battery module 501 and the second lithium battery module 502;

[0139] Based on the real-time temperature, the operations of the first heating element 5051 and the second heating element 5052 are controlled.

[0140] In addition, the logic instructions in the above-mentioned memory 330 can be implemented in the form of software functional units and can be stored in a computer-readable storage medium when sold or used as an independent product. Based on this understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium, including several instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods of each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc. Various media that can store program codes.

[0141] On the other hand, the present application also provides a computer program product, the computer program product includes a computer program stored on a non-transitory computer-readable storage medium, the computer program includes program instructions, when the program instructions are executed by the computer, the computer can execute the low-temperature starting battery module control method provided by the above methods, the method includes:

[0142] Obtaining stresses of the first lithium battery module 501 and the second lithium battery module 502;

[0143] Determine the real-time temperature of the first lithium battery module 501 and the second lithium battery module 502 based on the stress of the first lithium battery module 501 and the second lithium battery module 502;

[0144] Based on the real-time temperature, the operations of the first heating element 5051 and the second heating element 5052 are controlled.

[0145] According to an embodiment of the fifth aspect of the present application, the present application also includes a non-transitory computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, it is implemented to execute the above-mentioned low-temperature starting battery module control method, and the method includes:

[0146] Obtaining stresses of the first lithium battery module 501 and the second lithium battery module 502;

[0147] Determine the real-time temperature of the first lithium battery module 501 and the second lithium battery module 502 based on the stress of the first lithium battery module 501 and the second lithium battery module 502;

[0148] Based on the real-time temperature, the operations of the first heating element 5051 and the second heating element 5052 are controlled.

[0149] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, i.e., they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Those of ordinary skill in the art may understand and implement it without creative effort.

[0150] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods of each embodiment or some parts of the embodiment.

[0151] Finally, it should be noted that the above implementation modes are only used to illustrate the present application, rather than to limit the present application. Although the present application is described in detail with reference to the embodiments, a person skilled in the art should understand that various combinations, modifications or equivalent substitutions of the technical solutions of the present application do not depart from the spirit and scope of the technical solutions of the present application, and should be included in the scope of the claims of the present application.

Claims

1. A low temperature starting battery module control method, applied to a lithium battery module, characterized in that: The lithium battery module comprises a first lithium battery module, a second lithium battery module, a first stress detection component, a second stress detection component and a heating element, the heating element comprises a first heating element and a second heating element, the first stress detection component is installed on the first lithium battery module, the first stress detection component is used to detect the stress of the first lithium battery module, the second stress detection component is installed on the second lithium battery module, the second stress detection component is used to detect the stress of the second lithium battery module, the first heating element is connected to the first lithium battery module, and the second heating element is connected to the second lithium battery module; The control method comprises: Obtaining stresses of the first lithium battery module and the second lithium battery module; Determining the real-time temperature of the first lithium battery module and the second lithium battery module based on the stress of the first lithium battery module and the second lithium battery module; Based on the real-time temperature, operations of the first heating element and the second heating element are controlled.

2. The low temperature starting battery module control method according to claim 1, characterized in that: The step of determining the real-time temperature of the first lithium battery module and the second lithium battery module based on the stress of the first lithium battery module and the second lithium battery module comprises: Based on the real-time stress of the first lithium battery module, the real-time stress of the second lithium battery module and a stress database, the real-time temperatures of the first battery cell module and the second lithium battery module are determined, wherein the stress database includes the stress of the lithium battery module at different temperatures.

3. The low temperature starting battery module control method according to claim 2, characterized in that: The step of determining the real-time temperature of the first lithium battery module and the second lithium battery module based on the stress of the first lithium battery module and the second lithium battery module comprises: The real-time temperatures of the first and second lithium battery modules are determined based on the real-time stress of the first lithium battery module, the real-time stress of the second lithium battery module, the health status of the first lithium battery module, the health status of the second lithium battery module, and a status database, wherein the status database includes the stress of the lithium battery modules of lithium battery modules in different health status at different temperatures.

4. A battery module, characterized in that: It includes a first lithium battery module, a second lithium battery module, a first stress detection component, a second stress detection component and a heating element, the heating element includes a first heating element and a second heating element, the first stress detection component is installed on the first lithium battery module, the first stress detection component is used to detect the stress of the first lithium battery module, the second stress detection component is installed on the second lithium battery module, the second stress detection component is used to detect the stress of the second lithium battery module, the first heating element is connected to the first lithium battery module, and the second heating element is connected to the second lithium battery module.

5. A low temperature starting battery module control device, characterized in that: include: An acquisition module, used to acquire the stress of the first lithium battery module and the second lithium battery module; A determination module, configured to determine the real-time temperature of the first lithium battery module and the second lithium battery module based on the stress of the first lithium battery module and the second lithium battery module; A control module is used to control the operation of the first heating element and the second heating element based on the real-time temperature.

6. An electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the computer program, the low-temperature starting battery module control method according to any one of claims 1 to 4 is implemented.

7. A non-transitory computer-readable storage medium, the non-transitory computer-readable storage medium comprising a computer program, characterized in that: When the computer program is executed by a processor, the low-temperature starting battery module control method according to any one of claims 1 to 4 is implemented.

Images