CN115436805A

CN115436805A - Battery detection method, battery simulation test method, vehicle-mounted system and vehicle

Info

Publication number: CN115436805A
Application number: CN202111568750.5A
Authority: CN
Inventors: 沈强; 盛益
Original assignee: Beijing Chehejia Automobile Technology Co Ltd
Current assignee: Beijing Chehejia Automobile Technology Co Ltd
Priority date: 2021-12-21
Filing date: 2021-12-21
Publication date: 2022-12-06

Abstract

The disclosure relates to a battery detection method, a battery simulation test method, an on-board system and a vehicle, wherein the battery detection method comprises the steps of obtaining a charging voltage platform comparison reference and a discharging voltage platform comparison reference; the charging voltage platform comparison reference and the discharging voltage platform comparison reference are obtained by carrying out simulation test on a battery for simulation; acquiring a real-time charging voltage platform and a real-time discharging voltage platform of a battery in a vehicle; and comparing the real-time charging voltage platform and the real-time discharging voltage platform with the comparison reference of the charging voltage platform and the comparison reference of the discharging voltage platform, and detecting whether the internal resistance of the battery in the vehicle is in an abnormal state. Through the technical scheme, the early warning of the internal resistance change of the battery system is realized, the safety risk of the internal resistance abnormality of the battery system is identified in advance, the risk of thermal runaway or fire explosion of the battery system caused by the abnormal heating of the battery due to the increased internal resistance is reduced, and the use safety of a vehicle is ensured.

Description

Battery detection method, battery simulation test method, vehicle-mounted system and vehicle

Technical Field

The present disclosure relates to the field of vehicle technologies, and in particular, to a battery detection method, a battery simulation test method, a vehicle-mounted system, and a vehicle.

Background

With the rapid development of the electric vehicle industry, the holding capacity of the electric vehicle is higher and higher, and the safety of the battery is particularly important when the battery system is used as an important part of the electric vehicle.

In the use process of the battery system, the contact resistance of the battery electrical component and the internal resistance of the battery are abnormally increased, for example, the battery of the existing electric vehicle has a process risk of increasing the internal resistance of the battery in the production and manufacturing process, and although the quality of the battery system is detected before the battery system leaves a factory, the battery system still has a risk of bringing the battery system of the electric vehicle with the abnormal internal resistance in the subsequent use process. When the resistance of the battery is abnormal, the battery generates a large amount of heat in the using process, so that a great safety risk exists in the using process of a vehicle.

Disclosure of Invention

In order to solve the technical problems or at least partially solve the technical problems, the disclosure provides a battery detection method, a battery simulation test method, a vehicle-mounted system and a vehicle, which realize early warning on internal resistance change of a battery system, identify safety risks of abnormal internal resistance of the battery system in advance, reduce risks of thermal runaway or fire explosion of the battery system caused by abnormal heating of the battery due to increased internal resistance, and ensure the use safety of the vehicle.

In a first aspect, an embodiment of the present disclosure provides a battery detection method, including:

acquiring a charging voltage platform comparison reference and a discharging voltage platform comparison reference; the charging voltage platform comparison reference and the discharging voltage platform comparison reference are obtained by carrying out simulation test on a battery for simulation;

acquiring a real-time charging voltage platform and a real-time discharging voltage platform of a battery in the vehicle;

and comparing the real-time charging voltage platform and the real-time discharging voltage platform with a charging voltage platform comparison reference and a discharging voltage platform comparison reference, and judging whether the internal resistance of the battery in the vehicle is in an abnormal state.

Optionally, the obtaining a charging voltage platform comparison reference and a discharging voltage platform comparison reference includes:

acquiring accumulated charging capacity, accumulated charging energy, accumulated discharging capacity and accumulated discharging energy; the method comprises the steps that a battery for simulation is used, wherein the accumulated charging capacity, the accumulated charging energy, the accumulated discharging capacity and the accumulated discharging energy are obtained through simulation test on the battery for simulation;

acquiring a comparison reference of the charging voltage platform according to the accumulated charging capacity and the accumulated charging energy;

and obtaining the comparison reference of the discharge voltage platform according to the accumulated discharge capacity and the accumulated discharge energy.

Optionally, the obtaining a real-time charging voltage platform and a real-time discharging voltage platform of a battery in the vehicle includes:

acquiring accumulated charging capacity, accumulated charging energy, accumulated discharging capacity and accumulated discharging energy of a battery in the vehicle;

acquiring the real-time charging voltage platform according to the accumulated charging capacity and the accumulated charging energy;

and acquiring the real-time discharge voltage platform according to the accumulated discharge capacity and the accumulated discharge energy.

Optionally, the comparing the real-time charging voltage platform and the real-time discharging voltage platform with the charging voltage platform comparison reference and the discharging voltage platform comparison reference, and determining whether the internal resistance of the battery in the vehicle is in an abnormal state includes:

when the real-time charging voltage platform is greater than or equal to the charging voltage platform comparison reference and the real-time discharging voltage platform is greater than or equal to the discharging voltage platform comparison reference, judging that the internal resistance of a battery in the vehicle is in a normal state;

and when the real-time charging voltage platform is smaller than the charging voltage platform comparison reference and/or the real-time discharging voltage platform is smaller than the discharging voltage platform comparison reference, judging that the internal resistance of the battery in the vehicle is in an abnormal state.

Optionally, the determining that the internal resistance of the battery in the vehicle is in an abnormal state includes:

when the real-time charging voltage platform is larger than the charging voltage platform comparison reference and the real-time discharging voltage platform is smaller than the discharging voltage platform comparison reference, or the real-time charging voltage platform is smaller than the charging voltage platform comparison reference and the real-time discharging voltage platform is larger than the discharging voltage platform comparison reference, judging that the internal resistance of a battery in the vehicle is in a primary abnormal state;

when the real-time charging voltage platform is smaller than the charging voltage platform comparison reference and the real-time discharging voltage platform is smaller than the discharging voltage platform comparison reference, judging that the internal resistance of a battery in the vehicle is in a secondary abnormal state;

the battery detection method further comprises the following steps:

when the internal resistance of the battery in the vehicle is in the primary abnormal state, performing primary display early warning reminding or primary sound early warning reminding;

and when the internal resistance of the battery in the vehicle is in the secondary abnormal state, performing secondary display early warning reminding or secondary sound early warning reminding.

the working condition parameters of the charging voltage platform comparison reference, the discharging voltage platform comparison reference, the real-time charging voltage platform and the real-time discharging voltage platform are the same.

Optionally, the operating condition parameter includes at least one of an ambient temperature, an ambient humidity, or a battery current operating condition.

In a second aspect, an embodiment of the present disclosure further provides a battery simulation test method, including:

carrying out simulation test on a simulation battery;

acquiring a charging voltage platform comparison reference and a discharging voltage platform comparison reference of the battery for simulation based on the simulation test; the charging voltage platform comparison reference and the discharging voltage platform comparison reference are used for judging whether the internal resistance of a battery in the vehicle is in an abnormal state or not.

Optionally, the performing a simulation test on the simulation battery includes:

carrying out multiple simulation tests on a plurality of sets of simulation batteries;

the obtaining of the comparison reference of the charging voltage platform and the comparison reference of the discharging voltage platform of the battery for simulation based on the simulation test includes:

taking the charging voltage platform with the highest repetition rate in the charging voltage platforms obtained by the multiple times of simulation tests as a comparison reference of the charging voltage platforms;

and taking the discharge voltage platform with the highest repetition rate in the discharge voltage platforms obtained by the multiple times of simulation tests as the comparison reference of the discharge voltage platforms.

Optionally, the performing simulation test on the simulation battery includes:

carrying out simulation test on the battery for simulation under different working condition parameters;

and acquiring a charging voltage platform comparison reference and a discharging voltage platform comparison reference of the battery for simulation under different working condition parameters.

In a third aspect, an embodiment of the present disclosure further provides a battery detection apparatus, including:

the reference acquisition module is used for acquiring a charging voltage platform comparison reference and a discharging voltage platform comparison reference; the charging voltage platform comparison reference and the discharging voltage platform comparison reference are obtained by carrying out simulation test on a battery for simulation;

the real-time acquisition module is used for acquiring a real-time charging voltage platform and a real-time discharging voltage platform of a battery in the vehicle;

and the abnormity detection module is used for comparing the real-time charging voltage platform and the real-time discharging voltage platform with the charging voltage platform comparison reference and the discharging voltage platform comparison reference, and judging whether the internal resistance of the battery in the vehicle is in an abnormal state.

In a fourth aspect, an embodiment of the present disclosure further provides a battery simulation testing apparatus, including:

the simulation test module is used for performing simulation test on the simulation battery;

the reference module is used for acquiring a charging voltage platform comparison reference and a discharging voltage platform comparison reference of the battery for simulation based on the simulation test; the charging voltage platform comparison reference and the discharging voltage platform comparison reference are used for judging whether the internal resistance of a battery in the vehicle is in an abnormal state or not.

In a fifth aspect, an embodiment of the present disclosure provides an on-vehicle system, including:

a processor and a memory;

the processor is adapted to perform the steps of the battery detection method according to the first aspect by calling a program or instructions stored in the memory.

In a sixth aspect, embodiments of the present disclosure provide a vehicle including the on-board system according to the fifth aspect.

Compared with the prior art, the technical scheme provided by the embodiment of the disclosure has the following advantages:

the method for detecting the battery comprises the steps of obtaining a charging voltage platform comparison reference and a discharging voltage platform comparison reference, wherein the charging voltage platform comparison reference and the discharging voltage platform comparison reference are obtained by carrying out simulation test on a battery for simulation; acquiring a real-time charging voltage platform and a real-time discharging voltage platform of a battery in a vehicle; and comparing the real-time charging voltage platform and the real-time discharging voltage platform with the comparison reference of the charging voltage platform and the comparison reference of the discharging voltage platform, and judging whether the battery in the vehicle is in an abnormal state. Therefore, the abnormal state of the internal resistance of the battery in the vehicle is detected according to the actual parameters of the battery and the battery parameters calibrated by the simulation test in the using process of the vehicle, namely whether the battery has the use safety problem is judged, the internal resistance change of the battery system is pre-warned, the safety risk of the internal resistance abnormality of the battery system is identified in advance, the risk of thermal runaway or fire explosion of the battery system caused by the abnormal heating of the battery due to the increased internal resistance is reduced, and the use safety of the vehicle is ensured.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.

In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present disclosure, the drawings used in the embodiments or technical solutions in the prior art description will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 is a schematic flow chart of a battery detection method according to an embodiment of the present disclosure;

fig. 2 is a schematic flow chart of a battery simulation test method according to a third embodiment of the present disclosure;

fig. 3 is a schematic structural diagram of a battery detection apparatus according to a fifth embodiment of the present disclosure;

fig. 4 is a schematic structural diagram of a battery simulation testing apparatus according to a sixth embodiment of the present disclosure;

fig. 5 is a schematic structural diagram of an on-board system provided in a seventh embodiment of the present disclosure.

Detailed Description

In order that the above objects, features and advantages of the present disclosure may be more clearly understood, aspects of the present disclosure will be further described below. It should be noted that, in the case of no conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced in other ways than those described herein; it is to be understood that the embodiments disclosed in the specification are only a few embodiments of the present disclosure, and not all embodiments.

Example one

Fig. 1 is a schematic flowchart of a battery detection method provided in an embodiment of the present disclosure, where the battery detection method may be applied to a scene where a battery of a vehicle needs to be detected, where the vehicle may be an electric vehicle or a hybrid vehicle, and the battery detection method may be executed by the battery detection apparatus provided in the embodiment of the present disclosure. As shown in fig. 1, the battery test method includes:

s101, acquiring a charging voltage platform comparison reference and a discharging voltage platform comparison reference; the comparison reference of the charging voltage platform and the comparison reference of the discharging voltage platform are obtained by carrying out simulation test on a battery for simulation.

Specifically, a test simulation platform may be established, where the battery for simulation is a battery used for determining a comparison reference, and the battery for simulation is applied to the established test simulation platform. The method comprises the steps of carrying out whole vehicle working condition simulation test on a simulation battery in a test simulation platform, namely carrying out whole vehicle working condition circulation test on the simulation battery by a complete process of simulating vehicle use or driving, obtaining characterization parameters of voltage platforms of the simulation battery at different circulation stages through the test simulation test, namely obtaining a charging voltage platform comparison reference and a discharging voltage platform comparison reference of the simulation battery.

S102, acquiring a real-time charging voltage platform and a real-time discharging voltage platform of a battery in the vehicle.

Specifically, a real-time charging voltage platform and a real-time discharging voltage platform of a battery in the vehicle in the use process of the vehicle are obtained, wherein the real-time charging voltage platform and the real-time discharging voltage platform correspond to the charging and discharging conditions of the battery in the vehicle in the use process of the vehicle.

S103, comparing the real-time charging voltage platform and the real-time discharging voltage platform with a charging voltage platform comparison reference and a discharging voltage platform comparison reference, and judging whether the internal resistance of the battery in the vehicle is in an abnormal state.

Specifically, the detection of the abnormal state of the battery in the vehicle can be realized by judging the internal resistance condition of the battery in the vehicle, wherein the internal resistance condition of the battery is mainly divided into two parts, one part is the internal resistance of parts, such as a battery core and each connecting piece, and the other part is a connecting point, such as a mechanical fastening point or resistance generated by welding. The judgment of the internal resistance condition of the battery in the vehicle can be realized through the judgment of the real-time charging voltage platform and the real-time discharging voltage platform of the vehicle, and further the judgment of the abnormal state of the battery in the vehicle is realized.

At present, in the use process of a battery system, the contact resistance of a battery electrical component and the internal resistance of a battery are abnormally increased, for example, the battery of the existing electric vehicle has a process risk of increasing the internal resistance of the battery in the production and manufacturing process, and although the quality of the battery system is detected before the battery system leaves a factory, the battery system still has a risk of bringing the battery system of the electric vehicle with the abnormal internal resistance in the subsequent use process. When the resistance of the battery is abnormal, a large amount of heat is generated in the using process of the battery, so that a great safety risk exists in the using process of a vehicle.

Therefore, according to the embodiment of the disclosure, the abnormal state of the internal resistance of the battery in the vehicle is detected according to the actual parameters of the battery and the battery parameters calibrated by the simulation test in the use process of the vehicle, that is, whether the battery has a safety use problem is judged, the internal resistance change of the battery system is pre-warned, the safety risk of the internal resistance abnormality of the battery system is identified in advance, the risk of thermal runaway or fire explosion of the battery system caused by the abnormal heating of the battery due to the increased internal resistance is reduced, and the use safety of the vehicle is ensured.

For example, the executing subject of the steps 101 to 103 may be a vehicle or a cloud system, that is, the battery detection method described in the above embodiment may be executed by the vehicle, the cloud system, or both the vehicle and the cloud system. For example, when the Vehicle is used as an execution subject, the execution subject may be an ECU (Electronic Control Unit), a VCU (Vehicle Control Unit), or a BMS (Battery Management System) in the Vehicle, and the embodiment of the present disclosure is not limited thereto. When the cloud system is used as an execution main body, the vehicle is in communication connection with the cloud system, communication data in the use process of the vehicle, such as a real-time charging voltage platform and a real-time discharging voltage platform of a battery in the vehicle, can be uploaded to the cloud system through a vehicle machine, namely an Electronic Control Unit (ECU), and the communication mode of interaction between the vehicle and the cloud can be a 4G communication mode or a 5G communication mode.

Example two

Optionally, in step 101, obtaining a comparison reference of the charging voltage platform and a comparison reference of the discharging voltage platform includes: acquiring accumulated charge capacity, accumulated charge energy, accumulated discharge capacity and accumulated discharge energy, wherein the accumulated charge capacity, the accumulated charge energy, the accumulated discharge capacity and the accumulated discharge energy are acquired by performing a simulation test on a battery for simulation; acquiring a comparison reference of a charging voltage platform according to the accumulated charging capacity and the accumulated charging energy; and obtaining a comparison reference of a discharge voltage platform according to the accumulated discharge capacity and the accumulated discharge energy.

Specifically, the accumulated charging capacity, the accumulated charging energy, the accumulated discharging capacity and the accumulated discharging energy of the simulation battery in the whole vehicle working condition simulation test process refer to accumulated charging parameters and accumulated discharging parameters of the simulation battery in the whole vehicle working condition simulation test process. Acquiring a charging voltage platform comparison reference according to the accumulated charging capacity and the accumulated charging energy, wherein the charging voltage platform comparison reference is equal to the ratio of the accumulated charging energy to the accumulated charging capacity; and obtaining a discharge voltage platform comparison reference according to the accumulated discharge capacity and the accumulated discharge energy, wherein the discharge voltage platform comparison reference is equal to the ratio of the accumulated discharge energy to the accumulated discharge capacity, the unit of the capacity is Ah, and the unit of the energy is Wh. Therefore, the comparison reference of the charging voltage platform and the comparison reference of the discharging voltage platform of the battery correspond to the use and running process of the vehicle, and the accuracy of detecting the abnormal state of the battery is improved.

Optionally, corresponding to step 102, acquiring a real-time charging voltage platform and a real-time discharging voltage platform of a battery in a vehicle includes: acquiring the accumulated charging capacity, the accumulated charging energy, the accumulated discharging capacity and the accumulated discharging energy of a battery in the vehicle; acquiring a real-time charging voltage platform according to the accumulated charging capacity and the accumulated charging energy; and acquiring a real-time discharge voltage platform according to the accumulated discharge capacity and the accumulated discharge energy.

Specifically, a real-time charging voltage platform is obtained according to the accumulated charging capacity and the accumulated charging energy; and acquiring a real-time discharge voltage platform according to the accumulated discharge capacity and the accumulated discharge energy, wherein the accumulated charge capacity, the accumulated charge energy, the accumulated discharge capacity and the accumulated discharge energy correspond to simulation test parameters of the simulation battery one by one. Taking the cloud system as an example of the execution main body, the real-time charging voltage platform can be obtained by calculating the accumulated charging capacity and the accumulated charging energy through the cloud end, the comparison of the real-time charging voltage platform is equal to the ratio of the accumulated charging energy to the accumulated charging capacity of the battery in the vehicle in the use process of the vehicle, the comparison of the real-time discharging voltage platform is equal to the ratio of the accumulated discharging energy to the accumulated discharging capacity of the battery in the vehicle in the use process of the vehicle, the unit of the capacity is Ah, and the unit of the energy is Wh. Therefore, the real-time charging voltage platform and the real-time discharging voltage platform can be compared with the charging voltage platform comparison reference and the discharging voltage platform comparison reference respectively.

Optionally, corresponding to step 103, comparing the real-time charging voltage platform and the real-time discharging voltage platform with the charging voltage platform comparison reference and the discharging voltage platform comparison reference, and determining whether the internal resistance of the battery in the vehicle is in an abnormal state, including: and when the real-time charging voltage platform is greater than or equal to the comparison reference of the charging voltage platform and the real-time discharging voltage platform is greater than or equal to the comparison reference of the discharging voltage platform, judging that the internal resistance of the battery in the vehicle is in a normal state.

Specifically, the abnormal state of the internal resistance of the battery in the vehicle is detected, the real-time charging voltage platform is compared with the charging voltage platform comparison reference, and the real-time discharging voltage platform is compared with the discharging voltage platform comparison reference. When the real-time charging voltage platform is larger than the comparison reference of the charging voltage platform and the real-time discharging voltage platform is larger than the comparison reference of the discharging voltage platform, the charging and discharging conditions of the battery in the vehicle are judged to be normal, and the battery of the vehicle can be judged to be in a normal state at the moment.

Optionally, comparing the real-time charging voltage platform and the real-time discharging voltage platform with the charging voltage platform comparison reference and the discharging voltage platform comparison reference, and determining whether the internal resistance of the battery in the vehicle is in an abnormal state, including: when the real-time charging voltage platform is smaller than the comparison reference of the charging voltage platform and/or the real-time discharging voltage platform is smaller than the comparison reference of the discharging voltage platform, the battery in the vehicle is judged to be in an abnormal state, namely when at least one of the real-time charging voltage platform and the real-time discharging voltage platform is smaller than the corresponding comparison reference, the battery in the vehicle is judged to be in the abnormal state.

Optionally, when the real-time charging voltage platform is greater than the charging voltage platform comparison reference and the real-time discharging voltage platform is less than the discharging voltage platform comparison reference, or the real-time charging voltage platform is less than the charging voltage platform comparison reference and the real-time discharging voltage platform is greater than the discharging voltage platform comparison reference, determining that the internal resistance of the battery in the vehicle is in a primary abnormal state; and when the real-time charging voltage platform is smaller than the comparison reference of the charging voltage platform and the real-time discharging voltage platform is smaller than the comparison reference of the discharging voltage platform, judging that the internal resistance of the battery in the vehicle is in a secondary abnormal state.

Specifically, the abnormal state of the internal resistance of the battery in the vehicle is detected, the real-time charging voltage platform is compared with the charging voltage platform comparison reference, and the real-time discharging voltage platform is compared with the discharging voltage platform comparison reference. When the real-time charging voltage platform is larger than the comparison reference of the charging voltage platform and the real-time discharging voltage platform is larger than the comparison reference of the discharging voltage platform, the charging and discharging conditions of the battery in the vehicle are judged to be normal, and the battery of the vehicle can be judged to be in a normal state at the moment. And when the real-time charging voltage platform is smaller than the charging voltage platform comparison reference and the real-time discharging voltage platform is smaller than the discharging voltage platform comparison reference, judging that the charging of the battery in the vehicle is normal and the discharging is abnormal, or when the real-time charging voltage platform is smaller than the charging voltage platform comparison reference and the real-time discharging voltage platform is larger than the discharging voltage platform comparison reference, judging that the charging of the battery in the vehicle is abnormal and the discharging is normal, and further judging that the battery of the vehicle is in a primary abnormal state. And when the real-time charging voltage platform is smaller than the charging voltage platform comparison reference and the real-time discharging voltage platform is smaller than the discharging voltage platform comparison reference, judging that charging and discharging are abnormal in the charging and discharging conditions of the vehicle, and further judging that the battery of the vehicle is in a secondary abnormal state, wherein the abnormal severity degree corresponding to the secondary abnormal state is higher than the abnormal severity degree corresponding to the primary abnormal state. Therefore, the detection of the abnormal state of the battery in the vehicle is realized according to the comparison reference of the charging voltage platform, the comparison reference of the discharging voltage platform, the real-time charging voltage platform and the real-time discharging voltage platform.

Optionally, the battery detection method further comprises: when the internal resistance of the battery in the vehicle is judged to be in a primary abnormal state, primary display early warning reminding or primary sound early warning reminding is carried out; and when the internal resistance of the battery in the vehicle is judged to be in a secondary abnormal state, secondary display early warning reminding or secondary sound early warning reminding is carried out.

Specifically, the primary display early warning reminder or the primary sound early warning reminder corresponds to a vehicle battery to be reminded of a user, and a certain risk exists, and important attention is needed; the secondary display early warning reminding or the secondary sound early warning reminding corresponds to the requirement of reminding a user that a battery of a vehicle has a short circuit risk and needs to be checked after sale in time. Therefore, when the battery in the vehicle is in an abnormal state in the using process of the vehicle, the user can be prompted to take corresponding measures in time, and the use safety of the vehicle battery is ensured.

Illustratively, the primary display early warning reminder or the primary sound early warning reminder, where the primary display early warning reminder may be that the battery has a certain risk and needs to pay attention to the battery, or may be that the battery has a charging platform error or a discharging platform error, and the like, and the primary sound early warning reminder may be to use a buzzer to perform short-term reminding, and the specific reminding mode of the primary abnormal state is not limited in the embodiments of the present disclosure. And secondary display early warning reminding or secondary sound early warning reminding, wherein the secondary display early warning reminding content can be that the battery has short circuit risk and needs to be checked after sale in time, or can be that the charging platform and the discharging platform of the battery are wrong. The secondary sound early warning reminding mode can be that a buzzer is used for reminding for a long time, and the specific reminding mode of the secondary abnormal state is not limited in the embodiment of the disclosure.

Optionally, comparing the real-time charging voltage platform and the real-time discharging voltage platform with the charging voltage platform comparison reference and the discharging voltage platform comparison reference, and determining whether the internal resistance of the battery in the vehicle is in an abnormal state, includes: the working condition parameters of the charging voltage platform comparison reference, the discharging voltage platform comparison reference, the real-time charging voltage platform and the real-time discharging voltage platform are the same.

Specifically, the whole vehicle working condition simulation test is performed on the simulation battery under different working condition parameters to obtain a charging voltage platform comparison reference and a discharging voltage platform comparison reference of the simulation battery, that is, the charging voltage platform comparison reference and the discharging voltage platform comparison reference can correspond to different working condition parameters, so as to determine the charging and discharging abnormal conditions of the battery in the vehicle under different precondition. Specifically, the abnormal state of the internal resistance of the battery in the vehicle is detected according to the comparison reference of the charging voltage platform, the comparison reference of the discharging voltage platform, the real-time charging voltage platform and the real-time discharging voltage platform under the same working condition parameters, wherein the same working condition parameters are the same working condition parameters. Therefore, when the vehicle is in different environments or working conditions, the state of the vehicle battery can be determined.

Optionally, the operating condition parameter comprises at least one of an ambient temperature, an ambient humidity, or a battery current operating condition.

Illustratively, taking the working condition parameter as the ambient temperature, the ambient temperature range during the whole vehicle working condition simulation test can be set according to the specific environment of the vehicle, and different ambient temperature nodes of the whole vehicle working condition simulation test are determined. Under an environment temperature node, a plurality of sets of batteries with the same specification are subjected to a plurality of times of whole vehicle working condition simulation tests, the obtained vehicle is used under the environment temperature node, and the real-time charging voltage platform and the real-time discharging voltage platform which are uploaded to the cloud end in the vehicle running process are obtained, so that the abnormal state of the internal resistance of the batteries in the vehicle under the environment temperature node is determined, the detection of the abnormal state of the internal resistance of the batteries in the vehicle under different environment temperatures can be realized by adjusting the environment temperature node, and the test diversity is optimized.

For example, the execution subject of each step in the second embodiment may be a vehicle or a cloud system, that is, the battery detection method in the second embodiment may be executed by the vehicle, the cloud system, or both the vehicle and the cloud system. Therefore, the abnormal state of the internal resistance of the battery in the vehicle is detected according to the actual parameters of the battery and the parameters of the battery calibrated through simulation test in the using process of the vehicle, namely whether the battery has a use safety problem is judged, the early warning reminding of different abnormal levels of the internal resistance of the battery in the vehicle is carried out in a corresponding early warning reminding mode, the early warning is carried out on the internal resistance change of the battery system, the safety risk of the internal resistance abnormality of the battery system is identified in advance, the risk of thermal runaway or fire explosion of the battery system caused by abnormal heating of the battery due to the fact that the internal resistance is increased is reduced, the use safety of the vehicle is ensured, and the diversity of the testing process is optimized through different working condition parameters.

EXAMPLE III

Fig. 2 is a schematic flow chart of a battery simulation testing method according to a third embodiment of the present disclosure, where the battery simulation testing method can be applied to a scenario where a simulation test needs to be performed on a battery for simulation, and the battery simulation testing method can be executed by the battery simulation testing apparatus according to the third embodiment of the present disclosure. As shown in fig. 2, the battery simulation test method includes:

s201, performing simulation test on the simulation battery.

Specifically, a test simulation platform may be established, where the battery for simulation is a battery used for determining a comparison reference, and the battery for simulation is applied to the established test simulation platform. And carrying out the whole vehicle working condition simulation test on the simulation battery in the test simulation platform, namely carrying out the whole vehicle working condition circulation test on the simulation battery by simulating the complete flow of vehicle use or driving.

S202, acquiring a charging voltage platform comparison reference and a discharging voltage platform comparison reference of a battery for simulation based on simulation test; the comparison reference of the charging voltage platform and the comparison reference of the discharging voltage platform are used for judging whether the internal resistance of the battery in the vehicle is in an abnormal state or not.

Specifically, characterization parameters of the voltage platform of the battery for simulation at different cycle stages are obtained through test simulation tests, namely a charging voltage platform comparison reference and a discharging voltage platform comparison reference of the battery for simulation are obtained, and the charging voltage platform comparison reference and the discharging voltage platform comparison reference are used for judging whether the internal resistance of the battery in the vehicle is in an abnormal state or not.

Therefore, the simulation test is carried out on the battery for simulation, the comparison reference of the charging voltage platform and the comparison reference of the discharging voltage platform of the battery for simulation are obtained based on the simulation test, the abnormal state of the internal resistance of the battery in the vehicle is detected by using the comparison reference of the charging voltage platform and the comparison reference of the discharging voltage platform obtained by the simulation test, namely, whether the battery has the use safety problem is judged, the internal resistance change of the battery system is early warned, the safety risk of the internal resistance abnormality of the battery system is identified in advance, the risk of thermal runaway or fire explosion of the battery system caused by the abnormal heating of the battery due to the increased internal resistance is reduced, and the use safety of the vehicle is ensured. For example, the execution subject of the above steps 201 to 202 may be a simulation test platform.

Example four

Optionally, corresponding to step 201, performing a simulation test on the simulation battery, including: carrying out a plurality of times of simulation tests on the simulation battery; correspondingly, corresponding to step 202, obtaining a comparison reference of a charging voltage platform and a comparison reference of a discharging voltage platform of the battery for simulation based on the simulation test includes: and acquiring a charging voltage platform comparison reference and a discharging voltage platform comparison reference of the battery for simulation based on multiple simulation tests.

Specifically, the multiple times of the whole vehicle condition simulation test on the simulation battery may be a simulation test under the same precondition selected, where the same precondition is the same ambient temperature, the same ambient humidity, and the same current condition, where the same current condition corresponds to the driving speed of the whole vehicle. And carrying out a plurality of times of whole vehicle working condition simulation tests on the simulation battery, acquiring the accumulated charge-discharge capacity and charge-discharge energy of the simulation battery in each time of whole vehicle working condition simulation test process so as to obtain a charge voltage platform comparison reference and a discharge voltage platform comparison reference of the simulation battery in a single whole vehicle working condition simulation test process, and obtaining a plurality of groups of charge voltage platform comparison references and discharge voltage platform comparison references in a plurality of times of whole vehicle working condition simulation tests.

Optionally, corresponding to step 202, obtaining a comparison reference of a charging voltage platform and a comparison reference of a discharging voltage platform of the battery for simulation based on multiple simulation tests includes: the charging voltage platform with the highest repetition rate in the charging voltage platforms obtained by multiple times of simulation tests is used as a charging voltage platform comparison reference, the discharging voltage platform with the highest repetition rate in the discharging voltage platforms obtained by multiple times of simulation tests is used as a discharging voltage platform comparison reference, so that single or few error data in the charging voltage platform and the discharging voltage platform are eliminated, the accuracy and reliability of the comparison of the charging voltage platform comparison reference and the discharging voltage platform comparison reference of the battery for simulation are improved, the test result of the battery is more accurate, and the battery is suitable for the driving condition of a vehicle in a real situation.

Optionally, corresponding to step 201, performing a simulation test on the simulation battery, including: carrying out multiple simulation tests on multiple sets of cells with the same specification for simulation; correspondingly, corresponding to step 202, obtaining a comparison reference of a charging voltage platform and a comparison reference of a discharging voltage platform of the battery for simulation based on the simulation test includes: and acquiring a charging voltage platform comparison reference and a discharging voltage platform comparison reference of the simulation battery based on multiple simulation tests of multiple sets of simulation batteries with the same specification.

Specifically, the multiple sets of batteries with the same specification for simulation test of the whole vehicle working condition can be selected to be a battery system with the same specification and qualified internal resistance as a test sample for multiple times of simulation test of the whole vehicle working condition, similarly, the accumulated charge-discharge capacity and charge-discharge energy of the multiple sets of batteries for simulation are collected in the whole vehicle working condition simulation test process every time so as to obtain the comparison reference of the charge voltage platform and the comparison reference of the discharge voltage platform of different batteries for simulation in the single whole vehicle working condition simulation test process, and the multiple sets of comparison references of the charge voltage platform and the discharge voltage platform corresponding to the multiple sets of batteries for simulation are obtained in the multiple times of simulation test of the whole vehicle working condition. Normally, the test results of a plurality of sets of simulation batteries with the same specification should be the same, and if different test results occur, the test results can be deleted as error data. Therefore, the test error can be eliminated, and the accuracy of the battery test for simulation is improved.

Optionally, corresponding to step 202, obtaining a comparison reference of a charging voltage platform and a comparison reference of a discharging voltage platform of a battery for simulation based on multiple simulation tests includes: taking a charging voltage platform with the highest repetition rate in the charging voltage platforms obtained by multiple simulation tests aiming at multiple sets of simulation batteries as a charging voltage platform comparison reference; the discharge voltage platform with the highest repetition rate in the discharge voltage platforms obtained by multiple sets of simulation batteries in multiple simulation tests is used as a discharge voltage platform comparison reference so as to eliminate single or few error data in the charge voltage platform and the discharge voltage platform, improve the accuracy and reliability of selection of the charge voltage platform comparison reference and the discharge voltage platform comparison reference of the simulation batteries, further enable the test result of the batteries to be more accurate and adapt to the driving condition of the vehicle in the real situation.

Optionally, corresponding to step 201, performing a simulation test on the simulation battery, including: carrying out simulation test on a battery for simulation under different working condition parameters; correspondingly, according to the charging voltage platform comparison benchmark, the discharging voltage platform comparison benchmark, the real-time charging voltage platform and the real-time discharging voltage platform detection vehicle in the battery's internal resistance's abnormal conditions, including: and detecting the abnormal state of the internal resistance of the battery in the vehicle according to the comparison reference of the charging voltage platform, the comparison reference of the discharging voltage platform, the real-time charging voltage platform and the real-time discharging voltage platform under the same working condition parameters.

Specifically, the whole vehicle working condition simulation test is performed on the simulation battery under different working condition parameters to obtain a charging voltage platform comparison reference and a discharging voltage platform comparison reference of the simulation battery, that is, the charging voltage platform comparison reference and the discharging voltage platform comparison reference can correspond to different working condition parameters, so as to determine the charging and discharging abnormal conditions of the internal resistance of the battery in the vehicle under different precondition. Specifically, the abnormal state of the internal resistance of the battery in the vehicle is detected according to a charging voltage platform comparison reference, a discharging voltage platform comparison reference, a real-time charging voltage platform and a real-time discharging voltage platform under the same working condition parameters, wherein the same working condition parameters are the same working condition parameters. Therefore, when the vehicle is in different environments or working conditions, the state of the vehicle battery can be determined.

Therefore, the embodiment of the disclosure performs the simulation test on the battery for simulation, and obtains the comparison reference of the charging voltage platform and the comparison reference of the discharging voltage platform of the battery for simulation based on the simulation test, so as to detect the abnormal state of the internal resistance of the battery in the vehicle by using the comparison reference of the charging voltage platform and the comparison reference of the discharging voltage platform obtained by the simulation test, i.e., determine whether the battery has the use safety problem, perform early warning on the internal resistance change of the battery system, recognize the safety risk of the internal resistance abnormality of the battery system in advance, reduce the risk of thermal runaway or fire explosion of the battery system caused by abnormal heating of the battery due to increased internal resistance, ensure the use safety of the vehicle, effectively eliminate single or few error data in the charging voltage platform and the discharging voltage platform, improve the accuracy and reliability of the comparison reference of the charging voltage platform and the discharging voltage platform of the battery for simulation, and further enable the test result of the battery to be more accurate and adapt to the driving condition of the vehicle in the real situation. For example, the execution subject of the above steps in the fourth embodiment of the present disclosure may be a simulation test platform.

EXAMPLE five

The embodiment of the present disclosure further provides a battery detection apparatus, and fig. 3 is a schematic structural diagram of the battery detection apparatus provided in the fifth embodiment of the present disclosure. As shown in fig. 3, the battery detection apparatus includes a reference obtaining module 21, a real-time obtaining module 23, and an abnormality detection module 22, where the reference obtaining module 21 establishes a communication connection with the abnormality detection module 22, and the real-time obtaining module 23 establishes a communication connection with the abnormality detection module 22. The reference obtaining module 21 is configured to obtain a comparison reference of a modular charging voltage platform and a comparison reference of a discharging voltage platform; the charging voltage platform comparison reference and the discharging voltage platform comparison reference are obtained by carrying out simulation test on a battery for simulation; the real-time acquisition module 22 is used for acquiring a real-time charging voltage platform and a real-time discharging voltage platform of a battery in the vehicle in the running process of the vehicle; the anomaly detection module 23 is configured to compare the real-time charging voltage platform and the real-time discharging voltage platform with the charging voltage platform comparison reference and the discharging voltage platform comparison reference, and determine whether the internal resistance of the battery in the vehicle is in an abnormal state.

It should be noted that, for the specific working principle of the battery detection apparatus, reference may be made to the discussion of the specific working principle of the battery detection method in the foregoing embodiment, and details are not described here again.

EXAMPLE six

The embodiment of the present disclosure further provides a battery simulation test device, and fig. 4 is a schematic structural diagram of a battery simulation test device provided in a sixth embodiment of the present disclosure. As shown in fig. 4, the battery simulation testing apparatus includes a simulation testing module 31 and a reference module 32, where the simulation testing module 31 is configured to perform a simulation test on a simulation battery, and the reference module 32 is configured to obtain a charging voltage platform comparison reference and a discharging voltage platform comparison reference of the simulation battery based on the simulation test; the comparison reference of the charging voltage platform and the comparison reference of the discharging voltage platform are used for judging whether the internal resistance of the battery in the vehicle is in an abnormal state or not.

It should be noted that, for the specific working principle of the battery simulation testing apparatus, reference may be made to the discussion of the specific working principle of the battery simulation testing method in the foregoing embodiment, and details are not described here again.

EXAMPLE seven

The embodiment of the disclosure further provides a vehicle-mounted system, and fig. 5 is a schematic structural diagram of the vehicle-mounted system provided by the seventh embodiment of the disclosure. As shown in fig. 5, the vehicle-mounted system includes a processor 401 and a memory 402, and the processor 401 executes the steps of the battery detection method according to the above-mentioned embodiment by calling a program or an instruction stored in the memory 402, so that the vehicle-mounted system has the beneficial effects described in the above-mentioned embodiment, and is not described herein again.

As shown in FIG. 5, the in-vehicle system may be configured to include at least one processor 401, at least one memory 402, and at least one communication interface 403. The various components in the in-vehicle system are coupled together by a bus system 404. The communication interface 403 is used for information transmission with an external device. It is understood that the bus system 404 is used to enable communications among the components. The bus system 404 includes a power bus, a control bus, and a status signal bus in addition to a data bus. For clarity of illustration, the various buses are labeled as bus system 404 in fig. 5.

It will be appreciated that the memory 402 in this embodiment can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. In some embodiments, memory 402 stores the following elements: an executable unit or data structure, or a subset thereof, or an extended set of them, an operating system and an application program. In the embodiment of the present disclosure, the processor 401 executes the steps of the embodiments of the battery detection method provided by the embodiment of the present disclosure by calling the program or the instructions stored in the memory 402.

The method provided by the embodiment of the present disclosure may be applied to the processor 401, or implemented by the processor 401. The processor 401 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the battery detection method may be implemented by hardware integrated logic circuits or instructions in software in the processor 401. The Processor 401 may be a general-purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, or discrete hardware components. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

The steps of the battery detection method provided by the embodiment of the present disclosure may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software units in the decoding processor. The software elements may be located in ram, flash, rom, prom, or eprom, registers, among other storage media that are well known in the art. The storage medium is located in a memory 402, and the processor 401 reads information in the memory 402 and performs the steps of the method in combination with its hardware.

The vehicle-mounted system may further include one or more physical components to implement battery detection according to an instruction generated by the processor 401 when the battery detection method provided by the embodiment of the present application is executed. Different entity components can be arranged in the vehicle-mounted system or outside the vehicle-mounted system, such as a cloud server and the like. The various physical components cooperate with the processor 401 and the memory 402 to implement the functions of the in-vehicle system in this embodiment.

The disclosed embodiments also provide a storage medium, such as a computer-readable storage medium, storing a program or instructions that cause a computer to perform a battery detection method, the method including:

acquiring a real-time charging voltage platform and a real-time discharging voltage platform of a battery in a vehicle;

and comparing the real-time charging voltage platform and the real-time discharging voltage platform with the charging voltage platform comparison reference and the discharging voltage platform comparison reference, and judging whether the internal resistance of the battery in the vehicle is in an abnormal state or not.

Optionally, the computer executable instructions, when executed by the computer processor, may also be used to implement the technical solution of the battery detection method provided by any embodiment of the present disclosure.

From the above description of the embodiments, it is obvious for those skilled in the art that the present application can be implemented by software and necessary general hardware, and certainly can be implemented by hardware, but the former is a better embodiment in many cases. Based on such understanding, the technical solutions of the present application may be embodied in the form of a software product, which may be stored in a computer-readable storage medium, such as a floppy disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a FLASH Memory (FLASH), a hard disk or an optical disk of a computer, and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device) to execute the methods of the embodiments of the present disclosure.

The embodiment of the present disclosure further provides a vehicle, which includes the vehicle-mounted system according to the above-mentioned embodiment, and therefore the vehicle according to the embodiment of the present disclosure has the beneficial effects according to the above-mentioned embodiment, and details are not repeated here. The vehicle according to the embodiment of the present disclosure may include, for example, a range extender for providing additional electric energy to enable the electric vehicle to increase the electric vehicle component of the driving range, and the range extender in the conventional sense refers to a combination of an engine and a generator.

It should be noted that, in this document, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element.

The foregoing are merely exemplary embodiments of the present disclosure, which will enable those skilled in the art to understand or practice the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A battery testing method, comprising:

2. The method of claim 1, wherein the obtaining a charging voltage platform comparison reference and a discharging voltage platform comparison reference comprises:

acquiring accumulated charging capacity, accumulated charging energy, accumulated discharging capacity and accumulated discharging energy; wherein the accumulated charge capacity, the accumulated charge energy, the accumulated discharge capacity, and the accumulated discharge energy are obtained by performing a simulation test on the simulation battery;

3. The battery detection method of claim 1, wherein the obtaining of the real-time charging voltage platform and the real-time discharging voltage platform of the battery in the vehicle comprises:

acquiring the accumulated charging capacity, the accumulated charging energy, the accumulated discharging capacity and the accumulated discharging energy of a battery in the vehicle;

4. The battery detection method according to claim 1, wherein the comparing the real-time charging voltage platform and the real-time discharging voltage platform with the charging voltage platform comparison reference and the discharging voltage platform comparison reference to determine whether the internal resistance of the battery in the vehicle is in an abnormal state comprises:

5. The battery detection method according to claim 4, wherein the determining that the internal resistance of the battery in the vehicle is in an abnormal state when the real-time charging voltage plateau is less than the charging voltage plateau comparison reference and/or the real-time discharging voltage plateau is less than the discharging voltage plateau comparison reference comprises:

the battery detection method further comprises the following steps:

6. The battery detection method according to claim 1, wherein the comparing the real-time charging voltage platform and the real-time discharging voltage platform with the charging voltage platform comparison reference and the discharging voltage platform comparison reference to determine whether the internal resistance of the battery in the vehicle is in an abnormal state comprises:

7. The battery detection method of claim 6, wherein the operating condition parameter comprises at least one of an ambient temperature, an ambient humidity, or a battery current operating condition.

8. A battery simulation test method is characterized by comprising the following steps:

carrying out simulation test on a simulation battery;

acquiring a charging voltage platform comparison reference and a discharging voltage platform comparison reference of the battery for simulation based on the simulation test; the charging voltage platform comparison reference and the discharging voltage platform comparison reference are used for judging whether the internal resistance of the battery in the vehicle is in an abnormal state or not.

9. The battery simulation test method according to claim 8, wherein the performing of the simulation test on the simulation battery comprises:

10. The battery simulation test method according to claim 8, wherein the performing of the simulation test on the simulation battery comprises:

11. A battery test apparatus, comprising:

the real-time acquisition module is used for acquiring a real-time charging voltage platform and a real-time discharging voltage platform of the internal resistance of the battery in the vehicle;

12. A battery simulation test apparatus, comprising:

13. An in-vehicle system, comprising:

a processor and a memory;

the processor is operable to perform the steps of the battery detection method of any of claims 1-7 by invoking programs or instructions stored by the memory.

14. A vehicle characterized by comprising an on-board system according to claim 13.