Hybrid vehicle battery power control method, device, equipment and hybrid vehicle

Abstract

The present invention relates to the field of hybrid vehicles, and discloses a hybrid vehicle battery power control method, device, equipment and hybrid vehicle, wherein the method comprises: obtaining the historical heat generation and the temperature inside the pack of the power battery; if the historical heat generation is greater than the preset heat upper limit, and the temperature inside the pack is greater than the preset temperature upper limit, obtaining the dynamic power limit associated with the power battery; and controlling the output power of the power battery according to the dynamic power limit. The present invention solves the problem of the power battery of the hybrid vehicle being too high in temperature or the temperature rise rate being too fast, and can realize the early regulation of the output power of the power battery, thereby suppressing the excessive rise in the battery temperature, which not only improves the safety of the power battery, but also improves the driving smoothness of the whole vehicle.

Description

Technical Field

[0001] The present invention relates to the field of hybrid vehicles, and in particular to a hybrid vehicle battery power control method, device, equipment and a hybrid vehicle. Background Art

[0002] Hybrid electric vehicles (HEV, short for hybrid electric vehicles) are equipped with two or more power sources. The power battery of a hybrid electric vehicle generally uses a typical power-type battery cell. This type of battery cell has a small capacity, small size, and small heat capacity, but a large power load. During the use of the vehicle, especially under high temperature and high load conditions, the temperature change of the power battery shows significant characteristics of large amplitude and fast rate, which can easily cause the power battery temperature to be too high and the temperature rise rate to be too fast, thereby triggering related faults. Summary of the invention

[0003] Based on this, it is necessary to provide a hybrid vehicle battery power control method, device, equipment and hybrid vehicle to address the above technical problems, so as to solve the problem of excessively high temperature or excessively fast temperature rise rate of the hybrid vehicle power battery.

[0004] A hybrid vehicle battery power control method, comprising:

[0005] Obtain the historical heat generation and internal temperature of the power battery;

[0006] If the historical heat value is greater than a preset upper heat limit, and the temperature inside the pack is greater than a preset upper temperature limit, obtaining a dynamic power limit value associated with the power battery;

[0007] The output power of the power battery is controlled according to the dynamic power limit.

[0008] A hybrid vehicle battery power control device, comprising:

[0009] The battery data acquisition module is used to obtain the historical heat generation and internal temperature of the power battery;

[0010] A dynamic power limit acquisition module, configured to acquire a dynamic power limit associated with the power battery if the historical heat generation is greater than a preset heat upper limit and the temperature inside the pack is greater than a preset temperature upper limit;

[0011] A power control module is used to control the output power of the power battery according to the dynamic power limit.

[0012] A computer device comprises a memory, a processor and computer-readable instructions stored in the memory and executable on the processor. When the processor executes the computer-readable instructions, the hybrid vehicle battery power control method is implemented.

[0013] A hybrid vehicle comprises a power battery and a control chip for controlling the power battery, wherein the control chip is used to execute the hybrid vehicle battery power control method.

[0014] The above hybrid vehicle battery power control method, device, computer equipment and storage medium obtain the historical heat generation and the temperature inside the pack of the power battery to evaluate whether the power battery needs to be power limited by the historical heat generation and the temperature inside the pack. If the historical heat generation is greater than the preset heat upper limit, and the temperature inside the pack is greater than the preset temperature upper limit, the dynamic power limit associated with the power battery is obtained to adjust the output power of the power battery in advance, thereby effectively suppressing the subsequent increase in the temperature inside the pack, and the dynamic power limit can reduce the amplitude of the power limit change and slow down the change rate, which not only improves the safety of the power battery, but also improves the driving comfort of the whole vehicle. The output power of the power battery is controlled according to the dynamic power limit to complete the limitation of the output power of the power battery, and prevent the temperature inside the pack of the power battery from being too high or the temperature rise rate from being too fast. The present invention solves the problem of too high temperature or too fast temperature rise rate of the power battery of the hybrid vehicle, and can realize the early regulation of the output power of the power battery, thereby suppressing the excessive rise of the battery temperature, which not only improves the safety of the power battery, but also improves the driving comfort of the whole vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0016] Figure 1 is a flow chart of a hybrid vehicle battery power control method in one embodiment of the present invention;

[0017] Figure 2 is a structural schematic diagram of a hybrid vehicle battery power control device in one embodiment of the present invention;

[0018] Figure 3 is a schematic diagram of a computer device in one embodiment of the present invention. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] In one embodiment, if Figure 1 As shown, a hybrid vehicle battery power control method is provided, comprising the following steps:

[0021] S10. Obtain the historical heat generation and internal temperature of the power battery.

[0022] Understandably, the power battery may be a power battery suitable for a hybrid vehicle. The historical heat generation may refer to the heat generation of the power battery over a period of time in the past (such as the past 5 minutes, 10 minutes, 15 minutes, etc.). The temperature inside the pack is the battery pack temperature. The battery pack temperature of the power battery may be collected by a temperature sensor.

[0023] S20: If the historical heat value is greater than a preset upper heat limit, and the temperature inside the pack is greater than a preset upper temperature limit, a dynamic power limit value associated with the power battery is obtained.

[0024] Understandably, the preset heat limit and the preset temperature limit can be set according to actual needs. In some examples, the preset heat limit can be set based on the heat dissipation performance of the power battery. The better the heat dissipation performance of the power battery, the higher the preset heat limit; the worse the heat dissipation performance of the power battery, the lower the preset heat limit. The preset temperature limit is related to the recommended operating temperature range of the power battery. The higher the maximum value of the recommended operating temperature range of the power battery, the higher the preset temperature limit; the lower the maximum value of the recommended operating temperature range of the power battery, the lower the preset temperature limit.

[0025] There is a delay (usually 5 to 15 minutes) from the generation of heat inside the power battery to the transfer to the surface. When the temperature inside the pack detected by the temperature sensor is too high, the power battery needs to be limited in power. However, over a period of time, the battery cell temperature still shows an upward trend. Therefore, a more serious power limit may be triggered due to the continued increase in temperature.

[0026] Here, based on the historical heat generation of the power battery and the temperature inside the pack, the rising trend of the battery in the pack can be effectively predicted, and power limiting measures can be taken in advance to prevent the temperature inside the pack from being too high or the temperature rise rate from being too fast, while effectively avoiding the power limit time of the power battery.

[0027] It should be noted that the historical heat generation is greater than the preset heat upper limit, and the temperature inside the pack is greater than the preset temperature upper limit. These two conditions must be met at the same time. When only one condition is met, there is no need to take additional power limiting measures for the power battery. This is because, if the current historical heat generation is greater than the preset heat upper limit, and the temperature inside the pack is lower than the preset temperature upper limit, the larger heat generation can cause the temperature inside the pack to continue to rise. When the temperature inside the pack is greater than the preset temperature upper limit, power limiting measures are taken on the power battery, which can reduce the power battery power limitation time. When the historical heat generation is lower than the preset heat upper limit, and the temperature inside the pack is higher than the preset temperature upper limit, the heat generation of the power battery is low. In fact, the power of the power battery has been limited, and the temperature of the power battery will also show a downward trend. There is no need to take additional power limiting measures for the power battery.

[0028] The dynamic power limit may change over time. In some examples, the dynamic power limit may be linearly decreasing. Different types of power batteries may have different associated dynamic power limits. The dynamic power limit associated with the power battery may be set according to actual needs.

[0029] S30: Controlling the output power of the power battery according to the dynamic power limit.

[0030] It is understandable that the output power of the power battery is controlled according to the dynamic power limit, that is, the output power of the power battery is not greater than the dynamic power limit. By controlling the output power of the power battery, the current of the power battery can be reduced, thereby reducing the heat generated by the power battery and preventing the power battery from being overheated or the temperature rising rate being too fast.

[0031] In steps S10-S30, the historical heat generation and the temperature inside the pack of the power battery are obtained to evaluate whether the power battery needs to be power limited by the historical heat generation and the temperature inside the pack. If the historical heat generation is greater than the preset heat upper limit, and the temperature inside the pack is greater than the preset temperature upper limit, the dynamic power limit associated with the power battery is obtained to adjust the output power of the power battery in advance, thereby effectively suppressing the subsequent increase in the temperature inside the pack, and the dynamic power limit can reduce the amplitude of the power limit change and slow down the change rate, which not only improves the safety of the power battery, but also improves the driving smoothness of the whole vehicle. The output power of the power battery is controlled according to the dynamic power limit to complete the limitation of the output power of the power battery and prevent the temperature inside the power battery from being too high or the temperature rise rate from being too fast.

[0032] Optionally, step S10, i.e., obtaining the historical heating value and internal temperature of the power battery, includes:

[0033] S101, obtaining current data and internal resistance data of the power battery;

[0034] S102, calculating the real-time heating power of the power battery according to the current data and the internal resistance data;

[0035] S103, obtaining a number of real-time heating powers within a specified time period, performing time integration on the real-time heating powers, and generating the historical heating value.

[0036] Understandably, the current data of the power battery can be obtained through a current measuring instrument. The internal resistance data of the power battery can be a resistance value calculated based on the resistance characteristics of the battery material of the power battery. The real-time heating power of the power battery can be calculated through the power formula P=I*I*R, where P is the real-time heating power, I is the current data, and R is the internal resistance data.

[0037] The designated time period can be set according to actual needs. The designated time periods corresponding to different types of power batteries can be the same or different. The current data and internal resistance data of the power battery within the designated time period may change. Therefore, it is possible to obtain several real-time heating powers within the designated time period, integrate the several real-time heating powers over time, and generate a historical heating value. The historical heating value is the heating value of the power battery within the designated time period. When integrating several real-time heating powers over time, the designated time period can be decomposed into several time segments, each time segment corresponds to a real-time heating power, and the product of the time segment and the real-time heating power is the heating value of the time segment. The historical heating value is the sum of the heating values ​​of all time segments within the designated time period.

[0038] Optionally, step S101, i.e., obtaining current data and internal resistance data of the power battery, includes:

[0039] S1011, obtaining power information of the power battery and the temperature inside the pack;

[0040] S1012: Acquire the internal resistance data corresponding to the power information and the temperature inside the pack from preset battery internal resistance data.

[0041] Understandably, the internal resistance data of the power battery changes with the power battery's charge information (SOC value) and the temperature inside the pack. The preset battery internal resistance data includes a number of internal resistance values ​​at different charges and temperatures. In one example, the preset battery internal resistance data may be a table of the relationship between the battery internal resistance, charge, and temperature. After obtaining the power battery's charge information and the temperature inside the pack, the internal resistance value corresponding to the charge information and the temperature inside the pack can be queried from the preset battery internal resistance data, which is the internal resistance data.

[0042] It should be noted that although the measurement of the temperature inside the package has a certain delay, the internal resistance of the power battery is relatively small in the medium and high temperature range (35°C ~ 45°C) (compared to 0°C), and the amplitude of the internal resistance change with temperature is relatively low (within 20%). Therefore, the internal resistance data calculated based on the temperature and power information inside the package is very different from the actual value. This gap can be ignored. The internal resistance of the power battery is large at low temperatures (below 0°C), and the lower the temperature, the greater the internal resistance. In this embodiment, the applicable range of the temperature inside the package (that is, the temperature inside the package referred to in step S20 is greater than the preset temperature upper limit) generally exceeds 38°C, which does not belong to low temperature.

[0043] Optionally, before step S103, that is, before obtaining a plurality of real-time heating powers within a specified time period, integrating the plurality of real-time heating powers over time, and generating the historical heating value, the method further includes:

[0044] S1031. Acquire thermal capacity information of the power battery;

[0045] S1032. Set the designated time period according to the thermal capacity information.

[0046] Understandably, the thermal capacity information of a power battery may refer to the thermal capacity of the power battery or information related to the thermal capacity. The thermal capacity of a power battery is affected by the type, shape, quantity, and splicing method of the battery cells. The larger the thermal capacity of the power battery, the more heat needs to be transferred when the temperature changes by a unit. Similarly, when the same heat is generated in different power batteries, the smaller the thermal capacity, the greater the temperature change of the power battery, and the faster the temperature change rate. In order to timely realize the pre-control of the power limit, it is necessary to match the length of the time period with the rate of temperature change so that the heat currently emitted can be fed back to the temperature change within this period. In one example, the specified time period of a cylindrical nickel-hydrogen battery can be set to 15min to 20min, and the specified time period of a square ternary lithium battery can be set to 5min to 10min.

[0047] Optionally, step S20, that is, if the historical heat value is greater than a preset heat upper limit and the temperature inside the pack is greater than a preset temperature upper limit, obtaining a dynamic power limit associated with the power battery, includes:

[0048] S201, obtaining a static power limit and a power reduction rate associated with the power battery;

[0049] S202: Set the dynamic power limit according to the static power limit and the power reduction rate.

[0050] Understandably, the static power limit associated with the power battery may refer to the maximum allowable power of the power battery. The static power limit is determined by the performance of the power battery itself. In some cases, the heat dissipation capacity of the power battery will also affect the static power limit. There are four main ways to dissipate heat for power batteries: natural radiation heat dissipation, forced liquid cooling cycle heat dissipation, forced air cooling cycle heat dissipation, and forced liquid refrigerant direct cooling cycle heat dissipation. The stronger the heat dissipation capacity of the power battery, the less likely it is for heat to accumulate, and the greater the average power of the power battery for safe use, so the static power limit is set to a higher value; conversely, the weaker the heat dissipation capacity of the power battery, the easier it is for heat to accumulate, and the lower the average power of the power battery for safe use, so the static power limit can be set to a lower value.

[0051] The power drop rate is related to the thermal capacity of the power battery. The smaller the thermal capacity of the power battery, the greater the power drop rate; the larger the thermal capacity of the power battery, the smaller the power drop rate.

[0052] The dynamic power limit may be set according to the static power limit and the power reduction rate. Specifically, the dynamic power limit may be calculated by the following formula:

[0053]

[0054] Among them, P1 is the dynamic power limit, P0 is the static power limit, is the power reduction rate (positive number), and t is the time.

[0055] Generally, a minimum value may be set, and when the dynamic power limit drops to the minimum value, the dynamic power limit no longer drops.

[0056] Optionally, before step S20, that is, if the historical heat value is greater than a preset heat upper limit and the temperature inside the pack is greater than a preset temperature upper limit, before obtaining the dynamic power limit associated with the power battery, the following steps are included:

[0057] S21, obtaining heat dissipation performance data of the power battery, and setting the preset heat upper limit according to the heat dissipation performance data and the specified time period;

[0058] S22: Obtain a recommended operating temperature range of the power battery, and set a maximum value of the recommended operating temperature range as the preset upper temperature limit.

[0059] Understandably, the heat dissipation performance data of the power battery refers to data related to the heat dissipation performance of the power battery. In one example, the heat dissipation performance data can be expressed by heat dissipation power, that is, the amount of heat discharged per second. The product of the heat dissipation performance data and the specified time period is the amount of heat dissipated by the power battery in the specified time period. The preset heat upper limit can be set with reference to the product of the heat dissipation performance data and the specified time period. In one example, the preset heat upper limit is the product of the heat dissipation performance data and the specified time period. In other cases, the product of the heat dissipation performance data and the specified time period can be corrected (either increased or decreased) according to actual experiments to generate a preset heat upper limit.

[0060] The recommended operating temperature range of the power battery may refer to the optimal operating temperature range of the power battery. In the recommended operating temperature range, the power battery can exert better battery performance. The maximum value of the recommended operating temperature range may be set as a preset upper temperature limit. In one example, the preset upper temperature limit may be 40°C.

[0061] Optionally, after step S30, i.e., controlling the output power of the power battery according to the dynamic power limit, the step further includes:

[0062] S40: When the temperature inside the pack is lower than a preset lower temperature limit, releasing the control of the dynamic power limit on the output power of the power battery.

[0063] Understandably, the preset lower temperature limit can be set according to actual needs. When the temperature inside the pack is lower than the preset lower temperature limit, it means that the heating problem of the current power battery has been solved, and the control of the dynamic power limit on the output power of the power battery can be released. In other words, the limit value of the power battery output power is restored to the initial state (i.e., the static power limit).

[0064] It should be understood that the order of execution of the steps in the above embodiment does not necessarily mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiment of the present invention.

[0065] In one embodiment, a hybrid vehicle battery power control device is provided, and the hybrid vehicle battery power control device corresponds one-to-one to the hybrid vehicle battery power control method in the above embodiment. Figure 2 As shown, the hybrid vehicle battery power control device includes a battery data acquisition module 10, a dynamic power limit acquisition module 20 and a power control module 30. Each functional module is described in detail as follows:

[0066] The battery data acquisition module 10 is used to acquire the historical heat generation and internal temperature of the power battery;

[0067] A dynamic power limit acquisition module 20 is used to acquire a dynamic power limit associated with the power battery if the historical heat generation is greater than a preset heat upper limit and the temperature inside the pack is greater than a preset temperature upper limit;

[0068] The power control module 30 is used to control the output power of the power battery according to the dynamic power limit.

[0069] Optionally, the battery data acquisition module 10 includes:

[0070] A current internal resistance acquisition unit, used to acquire current data and internal resistance data of the power battery;

[0071] A real-time power calculation unit, used to calculate the real-time heating power of the power battery according to the current data and the internal resistance data;

[0072] The historical heat value generating unit is used to obtain a number of real-time heat powers within a specified time period, perform time integration on the several real-time heat powers, and generate the historical heat value.

[0073] Optionally, the current internal resistance obtaining unit includes:

[0074] A power temperature acquisition unit, used to acquire power information of the power battery and the temperature inside the pack;

[0075] The internal resistance data acquisition unit is used to acquire the internal resistance data corresponding to the power information and the internal temperature of the battery from preset battery internal resistance data.

[0076] Optionally, the hybrid vehicle battery power control device further includes:

[0077] A heat capacity acquisition module is used to acquire heat capacity information of the power battery;

[0078] The time period setting module is used to set the specified time period according to the thermal capacity information.

[0079] Optionally, the dynamic power limit acquisition module 20 includes:

[0080] A static power limit and power reduction rate acquisition unit, used to acquire a static power limit and a power reduction rate associated with the power battery;

[0081] The dynamic power limit setting unit is configured to set the dynamic power limit according to the static power limit and the power reduction rate.

[0082] Optionally, the hybrid vehicle battery power control device further includes:

[0083] A heat upper limit module is provided, which is used to obtain the heat dissipation performance data of the power battery, and set the preset heat upper limit according to the heat dissipation performance data and the specified time period;

[0084] A temperature upper limit module is provided to obtain a recommended operating temperature range of the power battery, and to set a maximum value of the recommended operating temperature range as the preset temperature upper limit.

[0085] Optionally, the hybrid vehicle battery power control device further includes:

[0086] The power control release module is used to release the control of the output power of the power battery by the dynamic power limit value when the temperature inside the pack is lower than a preset temperature lower limit.

[0087] The specific definition of the hybrid vehicle battery power control device can be found in the definition of the hybrid vehicle battery power control method mentioned above, which will not be repeated here. Each module in the above hybrid vehicle battery power control device can be implemented in whole or in part by software, hardware and a combination thereof. The above modules can be embedded in or independent of the processor in the computer device in the form of hardware, or can be stored in the memory of the computer device in the form of software, so that the processor can call and execute the operations corresponding to the above modules.

[0088] In one embodiment, a computer device is provided. The computer device may be a server, and its internal structure diagram may be as follows: Figure 3 As shown. The computer device includes a processor, a memory, a network interface and a database connected through a system bus. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a readable storage medium and an internal memory. The readable storage medium stores an operating system, computer-readable instructions and a database. The internal memory provides an environment for the operation of the operating system and computer-readable instructions in the readable storage medium. The database of the computer device is used to store data involved in the hybrid vehicle battery power control method. The network interface of the computer device is used to communicate with an external terminal through a network connection. When the computer-readable instructions are executed by the processor, a hybrid vehicle battery power control method is implemented. The readable storage medium provided in this embodiment includes a non-volatile readable storage medium and a volatile readable storage medium.

[0089] In one embodiment, a computer device is provided, including a memory, a processor, and computer-readable instructions stored in the memory and executable on the processor, wherein when the processor executes the computer-readable instructions, the following steps are implemented:

[0090] Obtain the historical heat generation and internal temperature of the power battery;

[0091] If the historical heat value is greater than a preset upper heat limit, and the temperature inside the pack is greater than a preset upper temperature limit, obtaining a dynamic power limit value associated with the power battery;

[0092] The output power of the power battery is controlled according to the dynamic power limit.

[0093] In one embodiment, one or more computer-readable storage media storing computer-readable instructions are provided. The readable storage media provided in this embodiment include non-volatile readable storage media and volatile readable storage media. The readable storage media store computer-readable instructions. When the computer-readable instructions are executed by one or more processors, the following steps are implemented:

[0094] Obtain the historical heat generation and internal temperature of the power battery;

[0095] If the historical heat value is greater than a preset upper heat limit, and the temperature inside the pack is greater than a preset upper temperature limit, obtaining a dynamic power limit value associated with the power battery;

[0096] The output power of the power battery is controlled according to the dynamic power limit.

[0097] Those of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be implemented by instructing related hardware through computer-readable instructions, and the computer-readable instructions can be stored in a non-volatile readable storage medium or a volatile readable storage medium. When the computer-readable instructions are executed, they may include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application may include non-volatile and / or volatile memory. Non-volatile memory may include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory may include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), etc.

[0098] An embodiment of the present invention further provides a hybrid vehicle, comprising a power battery and a control chip for controlling the power battery, wherein the control chip is used to execute the above hybrid vehicle battery power control method.

[0099] Those skilled in the art can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example. In actual applications, the above-mentioned functions can be distributed and completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above.

[0100] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included in the protection scope of the present invention.

Claims

1. A hybrid vehicle battery power control method, characterized in that: include: Obtain the historical heat generation and internal temperature of the power battery; If the historical heat value is greater than a preset upper heat limit, and the temperature inside the pack is greater than a preset upper temperature limit, obtaining a dynamic power limit value associated with the power battery; Controlling the output power of the power battery according to the dynamic power limit; The obtaining of the historical heat generation and the internal temperature of the power battery includes: Acquiring current data and internal resistance data of the power battery; Calculating the real-time heating power of the power battery according to the current data and the internal resistance data; Acquire a number of real-time heating powers within a specified time period, perform time integration on the number of real-time heating powers, and generate the historical heating power; If the historical heat value is greater than the preset upper heat limit, and the temperature inside the pack is greater than the preset upper temperature limit, before obtaining the dynamic power limit associated with the power battery, the method includes: The heat dissipation performance data of the power battery is obtained, and the preset heat upper limit is set according to the heat dissipation performance data and the specified time period.

2. The hybrid vehicle battery power control method according to claim 1, characterized in that: The obtaining of current data and internal resistance data of the power battery includes: Acquiring power information of the power battery and the temperature inside the pack; The internal resistance data corresponding to the power information and the temperature inside the pack is obtained from preset battery internal resistance data.

3. The hybrid vehicle battery power control method according to claim 1, characterized in that: Before acquiring a plurality of real-time heating powers within a specified time period and integrating the plurality of real-time heating powers over time to generate the historical heating power, the method further includes: Acquiring thermal capacity information of the power battery; The designated time period is set according to the thermal capacity information.

4. The hybrid vehicle battery power control method according to claim 1, characterized in that: If the historical heat value is greater than a preset heat upper limit, and the temperature inside the pack is greater than a preset temperature upper limit, obtaining a dynamic power limit value associated with the power battery includes: Obtaining a static power limit and a power reduction rate associated with the power battery; The dynamic power limit is set according to the static power limit and the power reduction rate.

5. The hybrid vehicle battery power control method according to claim 1, characterized in that: If the historical heat value is greater than the preset upper heat limit, and the temperature inside the pack is greater than the preset upper temperature limit, before obtaining the dynamic power limit associated with the power battery, the method includes: A recommended operating temperature range of the power battery is obtained, and a maximum value of the recommended operating temperature range is set as the preset upper temperature limit.

6. The hybrid vehicle battery power control method according to claim 1, characterized in that: After controlling the output power of the power battery according to the dynamic power limit, the method further includes: When the temperature inside the pack is lower than a preset lower temperature limit, the control of the dynamic power limit on the output power of the power battery is released.

7. A hybrid vehicle battery power control device, characterized in that: include: The battery data acquisition module is used to obtain the historical heat generation and internal temperature of the power battery; A dynamic power limit acquisition module, configured to acquire a dynamic power limit associated with the power battery if the historical heat generation is greater than a preset heat upper limit and the temperature inside the pack is greater than a preset temperature upper limit; A power control module, used to control the output power of the power battery according to the dynamic power limit; A heat upper limit module is provided, which is used to obtain the heat dissipation performance data of the power battery, and set the preset heat upper limit according to the heat dissipation performance data and a specified time period; The battery data acquisition module includes: A current internal resistance acquisition unit, used to acquire current data and internal resistance data of the power battery; A real-time power calculation unit, used to calculate the real-time heating power of the power battery according to the current data and the internal resistance data; The historical heat value generating unit is used to obtain a number of real-time heat powers within a specified time period, perform time integration on the several real-time heat powers, and generate the historical heat value.

8. A computer device comprising a memory, a processor, and computer-readable instructions stored in the memory and executable on the processor, characterized in that: When the processor executes the computer-readable instructions, the hybrid vehicle battery power control method according to any one of claims 1 to 6 is implemented.

9. A hybrid vehicle, characterized in that: It comprises a power battery and a control chip for controlling the power battery, wherein the control chip is used to execute the hybrid vehicle battery power control method as claimed in any one of claims 1 to 6.

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