CN115015743A - Relay aging prediction method and system for automobile power battery and automobile - Google Patents

Abstract

The invention discloses a relay aging prediction method and a system of an automobile power battery and an automobile, wherein the method comprises the steps of obtaining a battery current signal of the power battery and a whole automobile load current signal of the automobile after starting a preset stabilization time threshold of the power battery; when the working state of a relay of the power battery is detected to be changed in real time, according to the load current signal of the whole vehicle and the current signal of the battery, an aging numerical value corresponding to the relay is inquired from a preset relay life table; acquiring an aging numerical value accumulated value of the relay; and carrying out aging prediction on the relay according to the aging numerical value accumulated value. The invention improves the accuracy of the aging prediction of the service life of the relay, and improves the user experience and the safety.

Description

Relay aging prediction method, system and automobile for automotive power battery

technical field

The invention relates to the field of relay aging prediction, in particular to a relay aging prediction method, system and automobile of an automobile power battery.

Background technique

During the use of the electric vehicle, it is necessary to turn on or off the relay in the power battery of the electric vehicle, so as to realize the high-voltage power-on and power-off of the electric vehicle; however, as the use time of the relay becomes longer and longer, it is prone to failure, etc. Therefore, it is very important to predict the aging of the relay life of the power battery.

In the prior art, there is a scheme of monitoring the voltage at both ends of the battery pack in the power battery pack through a battery management system, through the terminal voltage of the relay and the relay status feedback signal fed back by the underlying software, and then predicting the life and aging of the relay. However, this scheme has the following shortcomings: due to the problem of sampling accuracy of the terminal voltage after passing through the relay, and the fluctuation range of the terminal voltage is large, the accuracy of this scheme for the aging prediction of the life of the relay is low.

SUMMARY OF THE INVENTION

Embodiments of the present invention provide a relay aging prediction method, system and vehicle for a power battery of an automobile, so as to solve the problem of low accuracy of aging prediction for the life of a relay.

A relay aging prediction method for an automotive power battery, comprising:

After starting the preset stabilization time threshold of the power battery, obtain the battery current signal of the power battery and the vehicle load current signal of the vehicle;

When it is detected in real time that the working state of the relay of the power battery changes, according to the vehicle load current signal and the battery current signal, query the aging value corresponding to the relay from the preset relay life table;

Obtain the cumulative value of the aging value of the relay;

The aging prediction is performed on the relay according to the accumulated value of the aging value.

A relay aging prediction system for an automotive power battery includes an automotive power battery and a control module for executing the above-mentioned relay aging prediction method for the automotive power battery.

An automobile includes the relay aging prediction system for the above-mentioned automobile power battery.

The above-mentioned method, system and vehicle for predicting the aging of a relay of an automobile power battery, the method obtains the battery current signal of the power battery and the vehicle load current signal of the automobile after starting the preset stabilization time threshold of the power battery; When the working state of the relay of the power battery changes, according to the vehicle load current signal and the battery current signal, query the aging value corresponding to the relay from the preset relay life table; obtain the relay The cumulative value of the aging value refers to the cumulative value of the aging value corresponding to each change in the working state of the relay after the relay is installed in the power battery; according to the cumulative value of the aging value, the Relays perform aging prediction.

When detecting that the working state of each relay of the power battery changes, the present invention performs aging prediction on the life of the relay through the aging value corresponding to the current value when the working state changes each time, thereby improving the reliability of the aging prediction of the life of the relay. Furthermore, it can be predicted in advance whether the relay will fail due to aging life, reducing the probability of forming a high-voltage circuit in the power battery or causing the electric vehicle to lose power, improving user experience and battery safety.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the following briefly introduces the drawings that are used in the description of the embodiments of the present invention. Obviously, the drawings in the following description are only some embodiments of the present invention. , for those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative labor.

1 is a flowchart of a method for predicting relay aging of an automotive power battery according to an embodiment of the present invention;

FIG. 2 is a flowchart of step S10 in the method for predicting the aging of the relay of the automotive power battery according to an embodiment of the present invention;

FIG. 3 is a flowchart of step S20 in the relay aging prediction method of the automotive power battery according to an embodiment of the present invention;

FIG. 4 is a flowchart of step S40 in the method for predicting the aging of a relay of an automotive power battery according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of a computer device in an embodiment of the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

In one embodiment, as shown in FIG. 1 , a method for predicting the aging of a relay of an automobile power battery is provided, which includes the following steps:

S10: After reaching the preset stabilization time threshold for starting the power battery, acquire the battery current signal of the power battery and the vehicle load current signal of the vehicle.

It is understandable that no matter in the charging or discharging state of the power battery, it is only after the power battery is powered on that the preset stabilization time threshold can be accurately obtained from the BMS (Battery Management System, battery management system). body voltage and module temperature. Optionally, the preset stabilization time threshold may be 0.4s, 0.5s, or the like. Preferably, the power battery is a power battery installed on an electric vehicle, and the power battery can be a lithium-ion battery or the like.

Further, the battery current signal includes the charging current signal and the discharging current signal of the power battery, and the battery current signal can be obtained by collecting the current value of the power battery by the Hall sensor in the power battery. The vehicle load current signal refers to the current value of other load equipment in the vehicle except the power battery (such as the current value of the heater on the vehicle when it is heated). The vehicle load current signal is transmitted from the vehicle control system through the vehicle CAN communication. received signal.

In one embodiment, step S10 includes, that is, the acquiring the battery current signal of the power battery includes:

The initial current signal of the power battery is collected in real time, and after it is determined that the initial current signal is valid, the initial current signal is preprocessed to obtain the battery current signal.

It is understandable that after the power battery enters a stable state, the initial current signal of the power battery is collected by the Hall sensor in the power battery, and the initial current signal is transmitted to the BMS through CAN communication, and the sampling accuracy of the initial current signal is carried out. And the sampling period is verified to determine whether the collected initial current signal meets the system requirements; after confirming that the initial current signal meets the sampling accuracy and sampling period, the validity of the initial current signal is diagnosed, for example, the initial current signal is exceeded. Limit diagnosis, open circuit diagnosis, etc., so that after the initial current signal is determined to be valid, the initial current signal is subjected to signal conversion, filtering and other preprocessing, and then the battery current signal is obtained.

In one embodiment, step S10 further includes, that is, the acquiring the battery current signal of the power battery and the vehicle load current signal of the vehicle, including:

S101: Detect whether the message transmission signal associated with the vehicle load current signal is interrupted.

Understandably, the vehicle load current signal is a signal received from the vehicle control system through the vehicle CAN communication. Therefore, before obtaining the vehicle load current signal at the current moment, it is necessary to detect the message associated with the vehicle load current signal. Whether the transmission signal is interrupted, that is, whether the CAN communication between the control module and the vehicle control system is interrupted. When the message transmission signal is interrupted, the control module cannot receive the vehicle load sent by the vehicle control system through CAN communication at the current moment. Current signal; when the message transmission signal is not interrupted, the vehicle load current signal sent by the vehicle control system at the current moment through CAN communication can be received.

S102: When the message transmission signal associated with the vehicle load current signal is not interrupted, record the load current signal included in the current message transmission signal as the vehicle load current signal.

Specifically, after detecting whether the message transmission signal associated with the vehicle load current signal is interrupted, and when the message transmission signal associated with the vehicle load current signal is not interrupted, the vehicle's CAN communication will be used to receive the current transmission from the vehicle control system. The message transmission signal is recorded, and then the load current signal contained in the message transmission signal is recorded as the vehicle load current signal.

S103: When the message transmission signal associated with the vehicle load current signal is interrupted, record the load current signal included in the last message transmission signal before the interruption as the vehicle load current signal, or record the whole vehicle load current signal. The vehicle load current signal is recorded as zero.

Specifically, after detecting whether the message transmission signal associated with the vehicle load current signal is interrupted, when the message transmission signal associated with the vehicle load current signal is interrupted, the load current included in the last message transmission signal before the interruption is The signal is recorded as the vehicle load current signal, or the vehicle load current signal is recorded as zero.

S20: When it is detected in real time that the working state of the relay of the power battery changes, according to the vehicle load current signal and the battery current signal, query the aging value corresponding to the relay from a preset relay life table .

It can be understood that the working state refers to the on state and the off state of the relay, and the change of the working state refers to the switching between the above on state and the off state. Among them, the relays of the power battery include, but are not limited to, main positive relays, main negative relays, precharge relays, and charging relays.

The aging value corresponding to each type of relay is stored in the preset relay life table, and one aging value corresponds to one current value, that is, after the current value of the relay is determined according to the vehicle load current signal and the battery current signal, the preset Set the relay life table to query the aging value corresponding to the current value of the relay. Further, the preset relay life table is generated according to the number of changes in the theoretical working state of each relay under different currents and the recommended values in the factory specifications of the relay supplier. Exemplarily, the number of times the theoretical working state has changed refers to that, under a certain current, after the set number of times the working state of the relay has changed reaches 1000 times, it is considered that the relay is in an aging situation. The corresponding current value and the recommended value in the factory specification of the relay supplier are used to generate a preset relay life table.

Specifically, after acquiring the battery current signal of the power battery and the vehicle load current signal of the vehicle, it is detected in real time whether the working state of the relay of the power battery has changed. The vehicle load current signal and the battery current signal determine the current value corresponding to the relay, and query the aging value corresponding to the relay from the preset relay life table.

It can be understood that the change of the working state of the relay of the power battery can be performed after receiving the change of the working state of the relay; for example, it is assumed that after the power battery reaches the preset charging requirement, the charging completion and the command to cut off the charging relay is received, And then cut off the connection between the charging relay and the power battery. Further, since there is a time difference between when the working state of the relay changes and when the command to change the working state of the relay is received, when it is detected that the working state of the relay of the power battery changes, the largest one within the preset period should be selected. The battery current signal (one or more battery current signals may be collected periodically in a preset period) is used as the basis for querying in the preset relay life table.

In one embodiment, in step S20, that is, according to the vehicle load current signal and the battery current signal, query the aging value corresponding to the relay from the preset relay life table, including:

S201: When it is determined that the relay whose working state has changed is the charging relay in the power battery, record the sum of the charging current and the vehicle load current as a first current value, and record the first current value and the The difference in the discharge currents is recorded as the second current value.

Understandably, when it is detected in real time that the relay whose working state has changed is the charging relay, since the working state of the charging relay has changed, the current state corresponding to the power battery may be: the charging device is charged by switching to the on state. The relay connects the power battery and starts to charge the power battery, or the power battery has just been charged, so the connection with the charging device is cut off by the charging relay switched to the off state, or the connection with the charging device is cut off by the charging relay switched to the off state. The connection between the charging equipment to interrupt the charging of the power battery, etc.; at this time, the current of the charging relay should be calculated based on the charging current, the discharging current and the vehicle load current as a whole, that is, the charging current and the vehicle load current should be calculated first. The sum is recorded as the first current value, and the difference between the first current value and the discharge current is recorded as the second current value corresponding to the charging relay.

S202: Obtain a first aging value associated with the second current value from the preset relay life table, and record the first aging value as an aging value of the charging relay.

It can be understood that the preset relay life table stores the aging value corresponding to each relay, one aging value corresponds to one current value, and each different relay has an associated preset relay life table, and then detects in real time. When the relay whose working state changes is the charging relay, record the sum of the charging current and the vehicle load current as the first current value, and record the difference between the first current value and the discharging current After the second current value of the charging relay is obtained, a preset relay life table associated with the charging relay is obtained, the first aging value associated with the second current value is obtained from the preset relay life table, and the first aging value is recorded. is the aging value of the charging relay.

In one embodiment, in step S20, that is, according to the vehicle load current signal and the battery current signal, query the aging value corresponding to the relay from a preset relay life table, further comprising:

When it is confirmed that the relay whose working state has changed is another relay in the power battery except the charging relay, obtain a second aging value associated with the discharge current from the preset relay life table, and The second aging value is recorded as the aging value of the other relays.

Understandably, when it is confirmed that the relay whose working state has changed is another relay in the power battery other than the charging relay, for example, when the current power battery is in a non-charging state, the working state of the charging relay will not change. Instead, the working state of other relays, such as the main positive relay, the main negative relay, etc., has changed, and then the charging current and the vehicle load current do not need to be considered at this time, and then after determining which type of relay the working state has changed, Obtain the second aging value associated with the discharge current from the preset relay life table associated with the relay whose working state has changed, and record the second aging value as the aging value of the relay.

S30: Acquire the cumulative value of the aging value of the relay.

Understandably, for an electric vehicle, the working state of the relay in the power battery changes (that is, when the relay switches between the ON state or the OFF state), which is used to power on and power off the high voltage of the whole vehicle of the electric vehicle. and charging and other functions; however, every time the working state of the relay changes, it will affect the life and aging of the relay, and when the working state changes, if there is a current, the larger the current value, the greater the impact on the life and aging of the relay. Therefore, the present invention predicts the life and aging of the relay by using the battery current signal when the working state of the relay changes each time, and the load current signal of the whole vehicle. The cumulative value of the aging value refers to the cumulative value of the aging value corresponding to each change in the working state of the relay after the relay is installed in the power battery.

Further, the accumulated aging value can be stored in the relay life aging counter, which will accumulate the accumulated aging value of different relays. In addition, in order to facilitate the debugging of each relay of the power battery, an external interface is reserved in the car. , the external interface is used to clear the accumulated value of the aging value corresponding to this type of relay after replacing any relay.

S40: Predict the aging of the relay according to the accumulated value of the aging value. Specifically, in step S40, it includes:

S401: Obtain a preset aging parameter design table; the preset aging parameter design table stores aging parameter design values associated with the relay.

Understandably, a preset relay life table is proposed in step S20, the preset relay life table is used to query the aging value corresponding to the relay, and the preset relay life table is based on the theoretical working state of each relay under different currents. The number of changes occurred, and the recommended values in the relay supplier's factory specification are generated. Furthermore, the preset aging parameter design table in this embodiment can be generated according to the preset relay life table in step S20, that is, the preset aging parameter design table can be obtained by performing an aging test on the relay in advance; The charging relay of the battery is subjected to the aging test. Assuming that the number of times the working state of the charging relay has changed reaches 1,000, the relay is considered to be aging, and then the current aging value of the charging relay is obtained and recorded as corresponding to the charging relay. The design value of the aging parameter.

S402: Record the ratio between the cumulative value of the aging numerical value and the design value of the aging parameter as an aging ratio.

S403: When the aging ratio is greater than or equal to the first aging threshold and less than the second aging threshold, send a relay aging replacement alarm instruction to a preset recipient, and the first aging threshold is smaller than the second aging threshold Aging threshold.

It is understandable that when the life of the relay is seriously aged, the relay will fail (for example, the relay cannot be normally turned on or cannot be normally turned off), thereby forming a high-voltage circuit in the power battery or causing the electric vehicle to lose power. Optionally, the first aging threshold may be set to 80% of the corresponding aging value when the relay fails; the second aging threshold may be set to 90% of the corresponding aging value when the relay fails.

Specifically, after recording the ratio between the accumulated value of the aging numerical value and the design value of the aging parameter as the aging ratio, compare the aging ratio with the first aging threshold and the second aging threshold, and if the aging ratio is greater than or equal to the first aging threshold , and less than the second aging threshold, it is determined that the aging state of the relay's current life has reached the alarm value, and the name of the relay that has reached the alarm value can be displayed on the display device of the car (such as the dashboard, external display, etc.), or it can be displayed in the car. The lighting components on the display will light up, and send the relay aging replacement alarm instruction to the preset recipient. The preset recipient may be the owner of the car.

In one embodiment, after step S402, that is, after recording the ratio between the cumulative value of the aging numerical value and the design value of the aging parameter as the aging ratio, the method further includes:

When the aging ratio is smaller than the first aging threshold, it is confirmed that the relay does not need to be replaced currently.

Specifically, after the ratio between the cumulative value of the aging value and the design value of the aging parameter is recorded as the aging ratio, when the aging ratio is smaller than the first aging threshold, it indicates that the current life of the relay has not reached the alarm value, that is, The relay is still functional, confirming that the relay does not currently need to be replaced.

In one embodiment, after step S402, that is, after recording the ratio between the cumulative value of the aging numerical value and the design value of the aging parameter as the aging ratio, the method further includes:

When the aging ratio is greater than or equal to the second aging threshold, a serious aging instruction of the relay is sent to the preset receiver, and the relay is disconnected to control the power battery to be turned off.

Specifically, after the ratio between the cumulative value of the aging numerical value and the design value of the aging parameter is recorded as the aging ratio, when the aging ratio is greater than or equal to the second aging threshold, it indicates that the current relay is seriously aged, The relay needs to be replaced to avoid the failure of the relay due to serious aging, thereby forming a high-voltage circuit in the power battery or causing the electric vehicle to lose power; therefore, at this time, a serious aging command of the relay is sent to the preset receiver, and the relay and power are cut off. The connection of the battery to control the shutdown of the power battery, which in turn leads to a high voltage power outage and the car stops running.

In this embodiment, when the working state of each relay of the power battery is changed, the aging value of the current value corresponding to each change is used to predict the life of the relay, which improves the reliability of the aging prediction of the life of the relay. Accuracy; furthermore, it can be predicted in advance whether the relay will fail due to aging life, reducing the probability of forming a high-voltage circuit in the power battery or causing the electric vehicle to lose power.

It should be understood that the size of the sequence numbers of the steps in the above embodiments does not mean the sequence of execution, and the execution sequence of each process should be determined by its functions and internal logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.

In one embodiment, a relay aging prediction system for an automotive power battery is provided, including the automotive power battery and a control module for executing the relay aging prediction method for the automotive power battery in the above embodiment.

In one embodiment, an automobile is provided, including the relay aging prediction system for the power battery of the automobile in the above-mentioned embodiments.

In one embodiment, a computer device is provided, and the computer device may be a server, and its internal structure diagram may be as shown in FIG. 5 . The computer device includes a processor, memory, a network interface, and a database connected by a system bus. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium, an internal memory. The nonvolatile storage medium stores an operating system, a computer program, and a database. The internal memory provides an environment for the execution of the operating system and computer programs in the non-volatile storage medium. The database of the computer equipment is used to store the relay aging prediction method of the automotive power battery in the above embodiment. The network interface of the computer device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, a method for predicting the aging of a relay of an automobile power battery is realized.

In one embodiment, a computer device is provided, including a memory, a processor, and a computer program stored in the memory and running on the processor, when the processor executes the computer program, the relay of the vehicle power battery in the above embodiment is implemented Aging prediction method.

In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the method for predicting the relay aging of a power battery of a vehicle in the above-mentioned embodiment is implemented.

Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above embodiments can be implemented by instructing relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage In the medium, when the computer program is executed, it may include the processes of the above-mentioned method embodiments. Wherein, any reference to memory, storage, database or other medium used in the various embodiments provided in this application may include non-volatile and/or volatile memory. Nonvolatile 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 various forms such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous chain Road (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), etc.

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. Module completion, that is, dividing the internal structure of the device into different functional units or modules to complete all or part of the functions described above.

The above-mentioned embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it is still possible to implement the foregoing implementations. The technical solutions described in the examples are modified, or some technical features thereof are equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the within the protection scope of the present invention.

Claims (10)

1. A relay aging prediction method for an automobile power battery is characterized by comprising the following steps:

after a preset stable time threshold value for starting a power battery is reached, acquiring a battery current signal of the power battery and a finished automobile load current signal of an automobile;

when the working state of a relay of the power battery is detected to be changed in real time, according to the load current signal of the whole vehicle and the current signal of the battery, an aging numerical value corresponding to the relay is inquired from a preset relay life table;

acquiring an aging numerical value accumulated value of the relay;

and carrying out aging prediction on the relay according to the aging numerical value accumulated value.

2. The method for predicting the relay aging of the automobile power battery as set forth in claim 1, wherein the obtaining the battery current signal of the power battery comprises:

acquiring an initial current signal of the power battery in real time, and preprocessing the initial current signal after determining that the initial current signal is effective to obtain the battery current signal.

3. The method for predicting the relay aging of the automobile power battery according to claim 1, wherein the obtaining of the battery current signal of the power battery and the entire automobile load current signal of the automobile comprises:

detecting whether a message transmission signal associated with the vehicle load current signal is interrupted;

when the message transmission signal related to the finished automobile load current signal is not interrupted, recording a load current signal contained in the current message transmission signal as the finished automobile load current signal;

when the message transmission signal related to the whole vehicle load current signal is interrupted, recording the load current signal contained in the last message transmission signal before interruption as the whole vehicle load current signal, or recording the whole vehicle load current signal as zero.

4. The method of claim 1, wherein the relay comprises a charge relay; the battery current signal comprises a charging current and a discharging current;

according to whole car load current signal and battery current signal, from predetermineeing relay life table inquiry with the ageing numerical value that the relay corresponds includes:

when the relay with the changed working state is determined to be a charging relay in the power battery, recording the sum of the charging current and the load current of the whole vehicle as a first current value, and recording the difference between the first current value and the discharging current as a second current value;

and inquiring a first aging numerical value associated with the second current value from the preset relay life table, and recording the first aging numerical value as the aging numerical value of the charging relay.

5. The method for predicting the aging of the relay of the automobile power battery as claimed in claim 4, wherein the method for searching the aging value corresponding to the relay from the preset relay life table according to the load current signal of the whole automobile and the battery current signal further comprises:

and when the relay with the changed working state is confirmed to be other relays except the charging relay in the power battery, acquiring a second aging numerical value associated with the discharging current from the preset relay life table, and recording the second aging numerical value as the aging numerical values of the other relays.

6. The method for predicting the aging of the relay of the automobile power battery according to any one of claims 1 to 5, wherein the predicting the aging of the relay according to the accumulated value of the aging value comprises the following steps:

acquiring a preset aging parameter design table; the preset aging parameter design table stores aging parameter design values related to the relay;

recording the ratio of the aging numerical value accumulated value to the aging parameter design value as an aging ratio;

and when the aging ratio is greater than or equal to a first aging threshold and smaller than a second aging threshold, sending a relay aging replacement alarm instruction to a preset receiver, wherein the first aging threshold is smaller than the second aging threshold.

7. The method for predicting relay aging of an automotive power battery as set forth in claim 6, wherein, after recording the ratio between the accumulated value of the aging numerical values and the design value of the aging parameter as an aging ratio, further comprising:

and when the aging ratio is smaller than the first aging threshold value, confirming that the relay does not need to be replaced currently.

8. The method for predicting relay aging of an automotive power battery as set forth in claim 6, wherein, after recording the ratio between the accumulated value of the aging numerical values and the design value of the aging parameter as an aging ratio, further comprising:

and when the aging ratio is greater than or equal to the second aging threshold, sending a relay severe aging instruction to the preset receiver, and switching off the relay to control the power battery to be switched off.

9. A relay aging prediction system for an automotive power battery, comprising an automotive power battery and a control module for executing the relay aging prediction method for the automotive power battery according to any one of claims 1 to 8.

10. An automobile, characterized by comprising the relay aging prediction system for an automobile power battery according to claim 9.

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