A battery power checking system, method and automobile

Abstract

The application provides a battery capacity verification system, comprising: a slave controller configured to acquire initial battery usage information and battery capacity information; and a master controller in communication connection with the slave controller, the master controller being configured to perform screening processing on the initial battery according to the usage information and the battery capacity information to obtain the initial battery satisfying a preset capacity correction condition, which is recorded as a target battery; and the master controller being further configured to control the target battery to discharge or charge to generate target correction capacity information. The battery capacity verification system, method and automobile disclosed by the application can improve the capacity evaluation accuracy of the battery.

Description

Technical Field

[0001] This invention relates to the field of battery management technology, and in particular to a battery charge verification system, method, and automobile. Background Technology

[0002] With the continuous development of new energy technologies, batteries, as a core power source, have been widely promoted. Battery capacity assessment has a crucial impact on battery status monitoring and power consumption strategies. However, existing batteries suffer from low accuracy in capacity assessment due to plateau effects. Therefore, there are areas for improvement. Summary of the Invention

[0003] In view of the shortcomings of the prior art described above, the purpose of this invention is to provide a battery charge verification system, method, and vehicle, which improves the accuracy of battery charge assessment.

[0004] To achieve the above and other related objectives, the present invention provides a battery charge verification system, comprising:

[0005] From the controller, to obtain initial battery usage information and battery level information; and

[0006] The main controller is communicatively connected to the slave controller. The main controller is used to filter the initial battery according to the usage information and the battery power information to obtain the initial battery that meets the preset power correction conditions, which is denoted as the target battery.

[0007] The main controller is also used to control the discharge or charging of the target battery to generate target corrected power information.

[0008] In one embodiment of the present invention, the slave controller includes:

[0009] The sensing unit is used to detect the current, voltage, and temperature information of the initial battery; and

[0010] A battery monitoring unit is communicatively connected to the sensing unit to acquire the initial battery usage time information, charging times information, discharging times information, and battery power information based on the current information, the voltage information, and the temperature information.

[0011] In one embodiment of the present invention, the power correction conditions include initial power correction conditions, discharge correction conditions, and charging correction conditions.

[0012] In one embodiment of the present invention, the main controller includes:

[0013] A power calibration screening unit, communicatively connected to the battery monitoring unit, is used to screen the initial battery according to the usage information and initial power calibration conditions to obtain an intermediate battery.

[0014] A discharge correction screening unit is communicatively connected to the charge correction screening unit to screen the intermediate battery according to discharge correction conditions in order to obtain discharged batteries and non-discharge batteries.

[0015] A charging calibration screening unit, communicatively connected to the discharging calibration screening unit, is used to screen the non-discharging batteries according to charging calibration conditions to obtain rechargeable batteries; and

[0016] An equalization control unit is used to control the discharge of the battery in order to generate target corrected charge information;

[0017] The equalization control unit is also used to control the charging of the rechargeable battery in order to generate target corrected power information;

[0018] The target battery includes both the discharge battery and the rechargeable battery.

[0019] In one embodiment of the present invention, the initial power correction condition includes at least one of the following: usage time information, charging number information, and discharging number information in the initial battery, which is greater than or equal to a preset threshold.

[0020] In one embodiment of the present invention, the discharge correction condition satisfies:

[0021] SOC+SOCe-SOC1 <SOClow;

[0022] Wherein, SOC represents the real-time power information of the intermediate battery, SOCe represents the power accumulation error information, SOC1 represents the travel power demand information, and SOClow represents the low voltage information of the discharge battery in the plateau region.

[0023] In one embodiment of the present invention, the charging correction condition satisfies:

[0024] SOC + SOCe + SOC2 > SOChigh;

[0025] Wherein, SOC represents the real-time power information of the intermediate battery, SOCe represents the power accumulation error information, SOC2 represents the chargeable power information for travel, and SOChigh represents the high voltage information of the platform area of ​​the rechargeable battery.

[0026] The present invention also provides a method for verifying the charge of a battery, comprising:

[0027] Obtain initial battery usage information and battery level information;

[0028] The initial batteries are screened based on the usage information and the battery power information to obtain initial batteries that meet preset power correction conditions, which are denoted as target batteries; and

[0029] Control the target battery to discharge or charge in order to generate target corrected power information.

[0030] In one embodiment of the present invention, the step of screening the initial battery based on the usage information and the battery power information to obtain the initial battery that meets the preset power correction conditions, and denoted as the target battery, includes:

[0031] Determine whether at least one of the initial battery usage time information, battery charging count information, and battery discharging count information is greater than or equal to a preset threshold.

[0032] If the value is greater than or equal to the preset threshold, then an intermediate battery is obtained, and it is determined whether the intermediate battery meets the discharge correction conditions based on the battery power information.

[0033] If the value is less than the preset threshold, the judgment is repeated until at least one of the usage time information, the battery charging times information, and the battery discharging times information is greater than or equal to the preset threshold.

[0034] If the intermediate battery meets the discharge correction condition, then discharge correction information is sent to the equalization control unit;

[0035] If the intermediate battery does not meet the discharge correction condition, then a non-discharged battery is obtained, and it is determined whether the non-discharged battery meets the charging correction condition.

[0036] If the non-discharged battery meets the charging correction conditions, then the charging correction information is sent to the equalization control unit;

[0037] If the non-discharged battery does not meet the charging correction conditions, the judgment is repeated until at least one of the usage time information, the battery charging count information, and the battery discharging count information is greater than or equal to the preset threshold.

[0038] The present invention also provides a vehicle including a battery charge verification system as described in any of the above claims.

[0039] As described above, the present invention provides a battery power verification system, method, and vehicle. By screening and judging the battery power information, and controlling the charging or discharging of the battery according to the screening and judgment results, the battery is removed from the voltage plateau region, which can improve the accuracy of battery power assessment, reduce errors, and achieve a better power consumption strategy. Attached Figure Description

[0040] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0041] Figure 1 The diagram shown is a structural schematic of a battery power verification system according to the present invention.

[0042] Figure 2 The flowchart shown is a battery power verification method according to the present invention;

[0043] Figure 3 Displayed as Figure 2 Flowchart of step S220;

[0044] Figure 4 The diagram shown is a schematic representation of a vehicle according to the present invention.

[0045] Component designation explanation:

[0046] 100. Battery verification system; 110. Slave controller; 111. Sensing unit; 112. Battery monitoring unit; 120. Main controller; 121. Battery calibration and screening unit; 122. Discharge calibration and screening unit; 123. Charge calibration and screening unit; 124. Equalization control unit;

[0047] 300. Automobile. Detailed Implementation

[0048] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0049] Please see Figure 1As shown, this invention provides a battery charge verification system that can be applied to a vehicle's battery management system (BMS) to improve the charge verification accuracy of the BMS. However, it is not limited to this; the charge verification system can also be used in energy storage products to improve the power consumption strategy of energy storage products. The battery type can be a ternary lithium battery or a lithium iron phosphate battery, but is not limited to these, and can also be other types of batteries. The charge verification system 100 may include a slave controller 110 and a master controller 120. The slave controller 110 can be located on the battery cell module to obtain initial battery usage information and battery charge information. The master controller 120 can be located on the battery and can be communicatively connected to the slave controller 110. It is used to screen the initial batteries based on the battery usage information and battery charge information obtained from the slave controller 110 to obtain initial batteries that meet preset charge correction conditions, which can be recorded as target batteries. However, it is not limited to this; the master controller 120 can also be used to control the discharge or charging of the target battery to generate target correction charge information. Specifically, initial battery usage information may include, but is not limited to, usage time, number of charge cycles, and number of discharge cycles. Battery calibration conditions may include, but are not limited to, initial battery calibration conditions, discharge calibration conditions, and charge calibration conditions.

[0050] Furthermore, the controller 110 may include, but is not limited to, a sensing unit 111 and a battery monitoring unit 112. The sensing unit 111 may be electrically connected to the battery cell module to detect the initial battery current, voltage, and temperature information. The battery monitoring unit 112 may be communicatively connected to the sensing unit 111 to calculate and obtain initial battery usage time information, charging cycle information, discharging cycle information, and battery capacity information based on the initial battery current, voltage, and temperature information. Specifically, the battery capacity information may include, but is not limited to, real-time capacity information, accumulated capacity error information, travel capacity demand information, available chargeable capacity information, low-voltage information in the platform area, and high-voltage information in the platform area.

[0051] Furthermore, the main controller 120 may include, but is not limited to, a power correction screening unit 121, a discharge correction screening unit 122, a charge correction screening unit 123, and an equalization control unit 124. The power correction screening unit 121 can be communicatively connected to the battery monitoring unit 112 to screen the initial battery based on its current, voltage, and temperature information to obtain intermediate batteries. The discharge correction screening unit 122 can be communicatively connected to the power correction screening unit 121 to screen the intermediate batteries according to discharge correction conditions to obtain discharged and non-discharged batteries. The charge correction screening unit 123 can be communicatively connected to the discharge correction screening unit 122 to screen non-discharged batteries according to charge correction conditions to obtain rechargeable batteries. The equalization control unit 124 can be communicatively connected to the discharge correction screening unit 122 to control the discharge of the discharged battery. However, it is not limited to this; the equalization control unit 124 can also be communicatively connected to the charge correction screening unit 123 to control the charging of the rechargeable battery to generate target corrected power information.

[0052] It is worth noting that the initial battery capacity correction condition may include at least one of the following: usage time information, charge count information, and discharge count information in the initial battery, which is greater than or equal to a preset threshold. For example, when the usage time information in the initial battery is greater than or equal to a preset threshold for usage time, it can be determined that the initial battery meets the initial battery capacity correction condition. Similarly, when the charge count information or discharge count information in the initial battery is greater than or equal to a preset threshold for charge count or discharge count, it can also be determined that the initial battery meets the initial battery capacity correction condition. The discharge correction condition can satisfy the following formula:

[0053] SOC+SOCe-SOC1 <SOClow。

[0054] Here, SOC can represent the real-time battery charge information of the intermediate battery, SOCe can represent the accumulated charge error information, SOC1 can represent the travel charge demand information, and SOClow can represent the low-voltage information of the discharge battery's plateau region. When the charge verification system 100 is applied to the BMS battery management system of a hybrid vehicle, the travel charge demand information SOC1 can be obtained from the controller 110 based on the hybrid vehicle's travel navigation needs. However, it is not limited to this; when the charge verification system 100 is applied to other scenarios, the travel charge demand information SOC1 can be the battery usage demand information.

[0055] The charging calibration conditions can satisfy the following formula.

[0056] SOC + SOCe + SOC2 > SOChigh.

[0057] Here, SOC can represent the current charge level of the intermediate battery, SOCe can represent the accumulated charge error information, SOC2 can represent the chargeable capacity information for the trip, and SOChigh can represent the high voltage information of the charging battery's plateau region. When the charge verification system 100 is applied to the battery management system (BMS) of a hybrid vehicle, the chargeable capacity information SOC2 can be the charge level that the battery can obtain when the trip is driven purely by the engine. That is, SOC2 can be calculated and obtained from the controller 110 based on the navigation requirements of the hybrid vehicle when driven purely by the engine. However, it is not limited to this. When the charge verification system 100 is applied to other scenarios, the chargeable capacity information SOC2 can be the chargeable capacity information of the battery.

[0058] Please see Figure 2 as well as Figure 3 As shown, the present invention also provides a battery power verification method, which corresponds to the power verification system in the above embodiments. The method may include the following steps:

[0059] Step S210: Obtain initial battery usage information and battery power information.

[0060] Step S220: Based on the usage information and battery power information, the initial batteries are screened to obtain initial batteries that meet the preset power correction conditions, which are recorded as target batteries.

[0061] Step S230: Control the target battery to discharge or charge in order to generate target corrected power information.

[0062] In one embodiment of the present invention, when step S210 is executed, the initial battery usage information and battery power information can be obtained from the controller 110. The initial battery usage information may include, but is not limited to, usage time information, charging count information, and discharging count information. The battery power information may include, but is not limited to, real-time power information, power accumulation error information, travel power demand information, travel rechargeable power information, low-voltage information in the platform area, and high-voltage information in the platform area. The controller 110 may include, but is not limited to, a sensing unit 111 and a battery monitoring unit 112. The sensing unit 111 can be electrically connected to the battery cell module to detect the initial battery current information, voltage information, and temperature information. The battery monitoring unit 112 can be communicatively connected to the sensing unit 111 to calculate and obtain the initial battery usage time information, charging count information, discharging count information, and battery power information based on the initial battery current information, voltage information, and temperature information.

[0063] Please see Figure 3As shown, in one embodiment of the present invention, when performing step S220, step S220 may specifically include the following steps:

[0064] Step S221: Determine whether at least one of the following is greater than or equal to a preset threshold: initial battery usage time information, battery charging times information, and battery discharging times information.

[0065] Step S222: If the value is greater than or equal to a preset threshold, then obtain the intermediate battery and determine whether the intermediate battery meets the discharge correction conditions based on the battery power information. If the value is less than the preset threshold, then repeat step S221 until at least one of the usage time information, battery charging times information, and battery discharging times information is greater than or equal to the preset threshold.

[0066] Step S223: If the intermediate battery meets the discharge correction conditions, then send discharge correction information to the equalization control unit.

[0067] Step S224: If the intermediate battery does not meet the discharge correction conditions, obtain the non-discharged battery and determine whether the non-discharged battery meets the charging correction conditions.

[0068] Step S225: If the non-discharged battery meets the charging correction conditions, then send charging correction information to the equalization control unit. If the non-discharged battery does not meet the charging correction conditions, then repeat the judgment in step S221 until at least one of the usage time information, battery charging times information, and battery discharging times information is greater than or equal to a preset threshold.

[0069] In one embodiment of the present invention, when step S221 is executed, the preset threshold may specifically include a preset threshold for the initial battery usage time, a preset threshold for the number of charging cycles, and a preset threshold for the number of discharging cycles.

[0070] In one embodiment of the present invention, when step S222 is executed, the discharge correction condition can specifically satisfy the following formula.

[0071] SOC+SOCe-SOC1 <SOClow。

[0072] Here, SOC can represent the real-time battery charge information of the intermediate battery, SOCe can represent the accumulated charge error information, SOC1 can represent the travel charge demand information, and SOClow can represent the low-voltage information of the discharge battery's plateau region. When the charge verification system 100 is applied to the BMS battery management system of a hybrid vehicle, the travel charge demand information SOC1 can be obtained from the controller 110 based on the hybrid vehicle's travel navigation needs. However, it is not limited to this; when the charge verification system 100 is applied to other scenarios, the travel charge demand information SOC1 can be the battery usage demand information.

[0073] In one embodiment of the present invention, when step S223 is executed, specifically, the discharge correction information can be received and executed by the main controller 120. The main controller 120 may include, but is not limited to, a power correction screening unit 121, a discharge correction screening unit 122, a charge correction screening unit 123, and an equalization control unit 124, and the equalization control unit 124 can be communicatively connected to the discharge correction screening unit 122. The power correction screening unit 121 can be communicatively connected to the battery monitoring unit 112 to screen batteries based on the initial battery's current information, voltage information, and temperature information to obtain target batteries. The discharge correction screening unit 122 can be communicatively connected to the power correction screening unit 121 to screen intermediate batteries according to discharge correction conditions to obtain discharged batteries and non-discharged batteries. When the discharge correction screening unit 122 determines that the intermediate battery meets the discharge correction conditions, the discharge correction screening unit 122 can send discharge correction information to the equalization control unit 124 to control the intermediate battery that meets the discharge correction conditions to discharge, thereby obtaining a discharged battery, so that the voltage of the discharged battery is in the non-plateau region, thereby obtaining a battery power with higher accuracy.

[0074] In one embodiment of the present invention, when step S224 is executed, specifically, the charging calibration information can be received and executed by the main controller 120. The charging calibration screening unit 123 can be communicatively connected to the discharging calibration screening unit 122 to screen non-discharging batteries according to charging calibration conditions to obtain batteries that meet the charging requirements. Furthermore, the charging calibration screening unit 123 can also be communicatively connected to the equalization control unit 124 to send charging calibration information to the equalization control unit 124. The equalization control unit 124 can control the non-discharging batteries to charge to obtain rechargeable batteries, and the voltage of the rechargeable batteries is in a non-plateau region to obtain a high-precision battery charge level. The charging calibration conditions can satisfy the following formula:

[0075] SOC + SOCe + SOC2 > SOChigh.

[0076] Here, SOC can represent the current charge level of the intermediate battery, SOCe can represent the accumulated charge error information, SOC2 can represent the chargeable capacity information for the trip, and SOChigh can represent the high voltage information of the charging battery's plateau region. When the charge verification system 100 is applied to the battery management system (BMS) of a hybrid vehicle, the chargeable capacity information SOC2 can be the charge level that the battery can obtain when the trip is driven purely by the engine. That is, SOC2 can be calculated and obtained from the controller 110 based on the navigation requirements of the hybrid vehicle when driven purely by the engine. However, it is not limited to this. When the charge verification system 100 is applied to other scenarios, the chargeable capacity information SOC2 can be the chargeable capacity information of the battery.

[0077] In one embodiment of the present invention, when step S225 is executed, specifically, when the battery does not meet either the discharge correction condition or the charging correction condition, the current battery power information is obtained, and the battery usage information is repeatedly judged until at least one of the battery usage time information, battery charging times information, and battery discharging times information is greater than or equal to a preset threshold, thereby obtaining an intermediate battery.

[0078] Please see Figure 2 As shown, in one embodiment of the present invention, when step S230 is executed, the target battery is controlled to discharge or charge to generate target corrected power information. Specifically, the target battery may include, but is not limited to, a discharging battery and a rechargeable battery. Power correction conditions may include, but are not limited to, initial power correction conditions, discharge correction conditions, and charging correction conditions. When the initial battery meets both the initial power correction conditions and the discharge correction conditions, it can be classified as a discharging battery. The equalization control unit 124 of the main controller 120 can discharge the discharging battery to generate low-voltage information in the non-platform region. The low-voltage information in the non-platform region is then calculated to generate target corrected power information with higher accuracy. When the initial battery meets both the initial power correction conditions and the charging correction conditions, it can be classified as a rechargeable battery. The equalization control unit 124 of the main controller 120 can charge the rechargeable battery to generate high-voltage information in the non-platform region. The high-voltage information in the non-platform region is then calculated to generate target corrected power information with higher accuracy.

[0079] Please see Figure 1 and Figure 4As shown, the present invention also provides a vehicle 300, which may include, but is not limited to, a battery charge verification system 100, and the battery charge verification system 100 is provided with at least one component for verifying the charge of the vehicle 300's battery. Specifically, when the vehicle is operating, the sensing unit 111 within the charge verification system 100 can detect and acquire the current, voltage, and temperature information of the vehicle's initial battery. The battery monitoring unit 112, communicatively connected to the sensing unit 111, can calculate and acquire the initial battery's usage time, charging cycles, discharging cycles, and charge information based on the initial battery's current, voltage, and temperature information. The charge correction screening unit 121, communicatively connected to the battery monitoring unit 112, can perform screening processing on the initial battery based on the initial battery's current, voltage, and temperature information to obtain intermediate batteries that meet the initial charge correction conditions. Subsequently, the discharge correction screening unit 122 can perform screening processing on the intermediate batteries that meet the initial charge correction conditions based on the discharge correction conditions to obtain discharged batteries and non-discharged batteries. The charging calibration screening unit 123 can screen non-discharging batteries that do not meet the discharging calibration conditions according to the charging calibration conditions, so as to obtain rechargeable batteries that meet the charging calibration conditions. Finally, the equalization control unit 124, which is communicatively connected to the discharging calibration screening unit 122 and the charging calibration screening unit 123 respectively, controls the discharging battery to discharge or controls the rechargeable battery to charge, thereby obtaining low-voltage information or high-voltage information in the non-platform area. Based on the low-voltage information or high-voltage information in the non-platform area, target calibration capacity information is generated, thereby improving the accuracy of battery capacity assessment.

[0080] In summary, the battery power verification system, method, and vehicle provided by this invention, by filtering and judging the battery power information and controlling the charging or discharging of the battery based on the filtering and judgment results, can make the battery move out of the voltage plateau region, thereby improving the accuracy of battery power assessment, reducing errors, and achieving a better power consumption strategy.

[0081] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

[0082] Throughout this description, numerous specific details, such as examples of components and / or methods, are provided to provide a complete understanding of embodiments of the invention. However, those skilled in the art will recognize that embodiments of the invention may be practiced without one or more of these specific details or by other devices, systems, components, methods, parts, materials, components, etc. In other instances, well-known structures, materials, or operations have not been specifically shown or described in detail to avoid obscuring aspects of embodiments of the invention.

[0083] Therefore, although the invention has been described herein with reference to specific embodiments thereof, freedom of modification, various changes and substitutions are also within the scope of the foregoing disclosure, and it should be understood that in some cases, certain features of the invention may be adopted without departing from the scope and spirit of the invention and without corresponding use of other features. Thus, many modifications can be made to adapt a particular environment or material to the essential scope and spirit of the invention. The invention is not intended to be limited to the specific terminology used in the following claims and / or the specific embodiments disclosed as the best mode for carrying out the invention, but the invention will include any and all embodiments and equivalents falling within the scope of the appended claims. Therefore, the scope of the invention will be defined only by the appended claims.

Claims

1. A battery charge verification system, characterized in that, The system includes: From the controller, to obtain initial battery usage information and battery level information; and The main controller is communicatively connected to the slave controller. The main controller is used to filter the initial battery according to the usage information and the battery power information to obtain the initial battery that meets the preset power correction conditions, which is denoted as the target battery. The main controller is also used to control the discharge or charging of the target battery to generate target corrected power information; The main controller includes: A power calibration screening unit, communicatively connected to the battery monitoring unit, is used to screen the initial battery based on the usage information and initial power calibration conditions to obtain an intermediate battery. A discharge correction screening unit is communicatively connected to the charge correction screening unit to screen the intermediate battery according to discharge correction conditions in order to obtain discharged batteries and non-discharge batteries. A charging calibration screening unit, communicatively connected to the discharging calibration screening unit, is used to screen the non-discharging batteries according to charging calibration conditions to obtain rechargeable batteries; and An equalization control unit is used to control the discharge of the battery in order to generate target corrected charge information; The equalization control unit is also used to control the charging of the rechargeable battery in order to generate target corrected power information; The target battery includes the discharge battery and the rechargeable battery; The discharge correction condition satisfies: SOC+SOCe-SOC1 <SOClow; Wherein, SOC represents the real-time power information of the intermediate battery, SOCe represents the power accumulation error information, SOC1 represents the travel power demand information, and SOClow represents the low voltage information of the discharge battery in the plateau region.

2. The battery charge verification system according to claim 1, characterized in that, The slave controller includes: The sensing unit is used to detect the current, voltage, and temperature information of the initial battery; and A battery monitoring unit is communicatively connected to the sensing unit to acquire the initial battery usage time information, charging times information, discharging times information, and battery power information based on the current information, the voltage information, and the temperature information.

3. The battery charge verification system according to claim 1, characterized in that, The initial power correction condition includes at least one of the following: usage time information, charging number information, and discharging number information in the initial battery, which is greater than or equal to a preset threshold.

4. The battery charge verification system according to claim 1, characterized in that, The charging correction condition satisfies: SOC + SOCe + SOC2 > SOChigh; Wherein, SOC represents the real-time power information of the intermediate battery, SOCe represents the power accumulation error information, SOC2 represents the chargeable power information for travel, and SOChigh represents the high voltage information of the platform area of ​​the rechargeable battery.

5. A method for verifying the charge level of a battery, using the battery charge verification system as described in any one of claims 1 to 4, characterized in that, The method includes: Obtain initial battery usage information and battery level information; The initial batteries are screened based on the usage information and the battery power information to obtain initial batteries that meet preset power correction conditions, which are denoted as target batteries; and Control the target battery to discharge or charge in order to generate target corrected power information.

6. The battery charge verification method according to claim 5, characterized in that, The step of filtering the initial batteries based on the usage information and the battery power information to obtain the initial batteries that meet the preset power correction conditions, and denoting them as target batteries, includes: Determine whether at least one of the initial battery usage time information, battery charging count information, and battery discharging count information is greater than or equal to a preset threshold. If the value is greater than or equal to the preset threshold, then an intermediate battery is obtained, and it is determined whether the intermediate battery meets the discharge correction conditions based on the battery power information. If the value is less than the preset threshold, the judgment is repeated until at least one of the usage time information, the battery charging times information, and the battery discharging times information is greater than or equal to the preset threshold. If the intermediate battery meets the discharge correction condition, then discharge correction information is sent to the equalization control unit; If the intermediate battery does not meet the discharge correction condition, then a non-discharged battery is obtained, and it is determined whether the non-discharged battery meets the charging correction condition. If the non-discharged battery meets the charging correction conditions, then the charging correction information is sent to the equalization control unit; If the non-discharged battery does not meet the charging correction conditions, the determination of whether at least one of the initial battery usage time information, battery charging number information, and battery discharging number information is greater than or equal to a preset threshold is repeated until at least one of the usage time information, battery charging number information, and battery discharging number information is greater than or equal to the preset threshold.

7. A car, characterized in that, Includes a battery charge verification system as described in any one of claims 1-4.

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