CN115166538A

CN115166538A - Charging detection method, device, equipment and product

Info

Publication number: CN115166538A
Application number: CN202210755560.2A
Authority: CN
Inventors: 陈英杰; 涂伟; 蔡国全
Original assignee: Dongguan Poweramp Technology Ltd
Current assignee: Dongguan Poweramp Technology Ltd
Priority date: 2022-06-30
Filing date: 2022-06-30
Publication date: 2022-10-11

Abstract

The application discloses a charging detection method, a device, equipment and a product, wherein the method comprises the following steps: charging the charging equipment, and determining a charging detection mode of the charging equipment; determining a charging strategy matched with the charging detection mode based on the charging detection mode; charging the charging equipment according to the charging strategy, and acquiring charging data of the charging equipment in the charging process based on the charging strategy; a detection result of the charging device is determined based on the charging data. According to the embodiment of the application, the accuracy of the detection result of the safety detection of the secondary battery can be improved.

Description

Charging detection method, device, equipment and product

Technical Field

The present application belongs to the field of charging technologies, and in particular, to a charging detection method, apparatus, device, and product.

Background

With the development of scientific and technological technology and the improvement of chip manufacturing technology, electric equipment using secondary batteries as energy sources appears in various fields, and the consumption of non-renewable resources such as petroleum is reduced.

In the related art, in order to ensure the charging performance of the secondary Battery in the electric equipment, a Battery Management System (Battery Management System) deployed in the electric equipment may perform safety detection on the secondary Battery during the charging process of the electric equipment. However, the reliability of safety detection in the conventional charging process is low, and the accuracy of the detection result is affected.

Disclosure of Invention

An object of the embodiments of the present application is to provide a charging detection method, apparatus, device and product, which can improve the accuracy of a detection result of a safety detection on a secondary battery.

In a first aspect, an embodiment of the present application provides a charging detection method, where the method includes: charging the charging equipment, and determining a charging detection mode of the charging equipment; determining a charging strategy matched with the charging detection mode based on the charging detection mode; charging the charging equipment according to the charging strategy, and acquiring charging data of the charging equipment in the charging process based on the charging strategy; a detection result of the charging device is determined based on the charging data.

In some implementations of the first aspect, the charging detection mode is a first detection mode, and determining a charging strategy matching the charging detection mode based on the charging detection mode includes: determining a first control strategy corresponding to the first detection mode as a charging strategy, wherein the first control strategy comprises charging the charging device based on a first charging condition.

In some implementations of the first aspect, the charging detection mode is a second detection mode, and determining a charging strategy matching the charging detection mode based on the charging detection mode includes: acquiring the current charging times N corresponding to the charging equipment, wherein N is a positive integer; and determining a second control strategy corresponding to the second detection mode as a charging strategy based on the current charging times N, wherein the second control strategy comprises charging the charging equipment for the Nth time based on the second charging working condition and charging for the (N + 1) th time based on the first charging working condition.

In some implementations of the first aspect, the charging detection mode is a third detection mode, and determining a charging strategy matching the charging detection mode based on the charging detection mode includes: acquiring the current charging times N corresponding to the charging equipment, wherein N is a positive integer; and determining a third control strategy corresponding to the third detection mode as a charging strategy based on the current charging times N, wherein the third control strategy comprises charging the charging equipment for the Nth time based on the first charging working condition, charging for the (N + 1) th time based on the second charging working condition, and charging for the (N + 2) th time based on the first charging working condition.

In some implementations of the first aspect, the charging detection mode is a fourth detection mode, and determining a charging strategy matching the charging detection mode based on the charging detection mode includes: acquiring the current charging times corresponding to the charging equipment; performing remainder operation on the current charging times to obtain a remainder result; under the condition that the remainder result is a first numerical value, determining that the charging strategy is to charge the charging equipment based on a first charging working condition; or under the condition that the surplus result is the second numerical value, determining the charging strategy to charge the charging equipment based on the second charging working condition; or, in the case that the remainder result is a third value, determining that the charging strategy is to charge the charging device based on a normal charging condition, wherein the normal charging condition is constant-current charging first and then constant-voltage charging, and the third value is a value other than the first value and the second value.

In some implementations of the first aspect, charging the charging device, and determining a charging detection mode corresponding to the charging device includes: in the process of charging the charging equipment, acquiring control instruction information of a detection mode; and determining the detection mode corresponding to the control instruction information as a charging detection mode.

In some implementations of the first aspect, charging the charging device, and determining a charging detection mode corresponding to the charging device includes: and under the condition that the control instruction information of the detection mode is not acquired within the fourth time period, determining that the charging detection mode is the fourth detection mode.

In some implementations of the first aspect, the charging device includes a secondary battery, and the first charging condition includes the steps of: a1, standing a charging device for a first time length in a target time period, wherein the open-circuit voltage of a secondary battery has a variable quantity in the target time period; a3, charging the charging equipment at the first charging multiplying power until the voltage of a secondary battery in the charging equipment reaches a charging cut-off voltage; a5, charging the charging equipment by using a second charging multiplying factor until the voltage of a secondary battery in the charging equipment reaches a charging cut-off voltage, wherein the second charging multiplying factor is smaller than the first charging multiplying factor; a7, standing the charging equipment for a second time period; the second charging condition comprises the following steps: b1, standing the charging equipment for a second time; b3, charging the charging equipment by using the third charging multiplying power until the charging capacity of the charging equipment reaches a target value; b5, charging the charging equipment for a second time period by using a fourth charging multiplying factor, and then standing for a third time period, wherein the fourth charging multiplying factor is larger than the third charging multiplying factor; b7, after the step b5, repeating the steps b3 and b5 until the voltage of the secondary battery in the charging device reaches the charge cut-off voltage; and b9, charging the charging equipment by using the second charging multiplying factor until the voltage of the secondary battery in the charging equipment reaches a charging cut-off voltage, wherein the second charging multiplying factor is smaller than the third charging multiplying factor.

In some implementations of the first aspect, the charging device includes a secondary battery, the charging data includes current data and voltage data of the secondary battery charged under the first charging condition, and the determining the detection result of the charging device based on the charging data includes at least one of: acquiring the short circuit impedance of the secondary battery based on the current data and the voltage data so as to perform internal short circuit detection on the secondary battery; acquiring the charging capacity of the secondary battery based on the current data, and performing battery capacity fading SOH detection based on the charging capacity of the secondary battery to obtain a detection result; acquiring the cell capacity of each single cell based on the current data and the voltage data of each single cell in the secondary battery, and determining the cell capacity difference of at least one single cell to obtain a detection result; and calibrating the SOC value of the secondary battery based on the current data, the voltage data and the temperature data of the secondary battery charged under the first charging working condition to obtain a detection result.

In some implementations of the first aspect, the charging device includes a secondary battery, the charging data includes current data and voltage data of the secondary battery charged under the second charging condition, and the determining the detection result of the charging device based on the charging data includes: acquiring charging internal resistance corresponding to the secondary battery based on the current data and the voltage data; and performing impedance detection or lithium analysis detection on the secondary battery based on the charging internal resistance to obtain a detection result.

In a second aspect, an embodiment of the present application provides a charge detection device, including: the determining module is used for charging the charging equipment and determining a charging detection mode of the charging equipment; the determining module is further used for determining a charging strategy matched with the charging detection mode based on the charging detection mode; the acquisition module is used for charging the charging equipment according to the charging strategy and acquiring charging data of the charging equipment in the charging process based on the charging strategy; the determining module is further used for determining a detection result of the charging equipment based on the charging data.

In some implementations of the second aspect, the charging detection mode is a first detection mode, and the determining module is specifically configured to: determining a first control strategy corresponding to the first detection mode as a charging strategy, wherein the first control strategy comprises charging the charging device based on a first charging condition.

In some implementations of the second aspect, the charge detection mode is a second detection mode, and the determining module includes: the charging device comprises an acquisition unit, a charging unit and a charging unit, wherein the acquisition unit is used for acquiring the current charging times N corresponding to the charging device, and N is a positive integer; and the determining unit is used for determining a second control strategy corresponding to the second detection mode as a charging strategy based on the current charging frequency N, wherein the second control strategy comprises charging the charging equipment for the Nth time based on the second charging working condition and charging for the (N + 1) th time based on the first charging working condition.

In some implementations of the second aspect, the charge detection mode is a third detection mode, and the determining module includes: the charging device comprises an acquisition unit, a charging unit and a charging unit, wherein the acquisition unit is used for acquiring the current charging times N corresponding to the charging device, and N is a positive integer; and the determining unit is used for determining a third control strategy corresponding to the third detection mode as a charging strategy based on the current charging frequency N, wherein the third control strategy comprises charging the charging equipment for the Nth time based on the first charging working condition, charging for the (N + 1) th time based on the second charging working condition, and charging for the (N + 2) th time based on the first charging working condition.

In some implementations of the second aspect, the charge detection mode is a fourth detection mode, and the determining module includes: the acquisition unit is used for acquiring the current charging times corresponding to the charging equipment; the computing unit is used for carrying out residue taking operation on the current charging times to obtain a residue taking result; the determining unit is used for determining that the charging strategy is to charge the charging equipment based on a first charging working condition under the condition that the residue taking result is a first numerical value; or the determining unit is used for determining the charging strategy to charge the charging equipment based on the second charging working condition under the condition that the surplus result is the second numerical value; or, the determining unit is configured to determine that the charging strategy is to charge the charging device based on a normal charging condition when the remainder result is a third value, where the normal charging condition is constant-current charging and then constant-voltage charging, and the third value is a value other than the first value and the second value.

In some implementations of the second aspect, the determining module includes: the acquisition unit is used for acquiring control instruction information of the detection mode in the process of charging the charging equipment; and the determining unit is used for determining the detection mode corresponding to the control instruction information as the charging detection mode.

In some implementations of the second aspect, the determining module is specifically configured to: and under the condition that the control instruction information of the detection mode is not acquired within the fourth duration, determining that the charging detection mode is the fourth detection mode.

In some implementations of the second aspect, the charging device includes a secondary battery, and the first charging condition includes the steps of: a1, standing a charging device for a first time length in a target time period, wherein the open-circuit voltage of a secondary battery has a variable quantity in the target time period; a3, charging the charging equipment at the first charging multiplying power until the voltage of a secondary battery in the charging equipment reaches a charging cut-off voltage; a5, charging the charging equipment by using a second charging multiplying factor until the voltage of a secondary battery in the charging equipment reaches a charging cut-off voltage, wherein the second charging multiplying factor is smaller than the first charging multiplying factor; a7, standing the charging equipment for a second time length; the second charging condition comprises the following steps: b1, standing the charging equipment for a second time; b3, charging the charging equipment by using the third charging multiplying power until the charging capacity of the charging equipment reaches a target value; b5, charging the charging equipment for a second time period by using a fourth charging multiplying factor, and then standing for a third time period, wherein the fourth charging multiplying factor is larger than the third charging multiplying factor; b7, after the step b5, repeating the steps b3 and b5 until the voltage of the secondary battery in the charging device reaches the charge cut-off voltage; and b9, charging the charging equipment by using the second charging multiplying factor until the voltage of the secondary battery in the charging equipment reaches a charging cut-off voltage, wherein the second charging multiplying factor is smaller than the third charging multiplying factor.

In some implementations of the second aspect, the charging device includes a secondary battery, the charging data includes current data and voltage data of the secondary battery charged under the first charging condition, and the determining module is specifically configured to at least one of: acquiring the short circuit impedance of the secondary battery based on the current data and the voltage data so as to perform internal short circuit detection on the secondary battery; acquiring the charging capacity of the secondary battery based on the current data, and performing battery capacity fading SOH detection based on the charging capacity of the secondary battery to obtain a detection result; acquiring the cell capacity of each single cell based on the current data and the voltage data of each single cell in the secondary battery, and determining the cell capacity difference of at least one single cell to obtain a detection result; and calibrating the SOC value of the secondary battery based on the current data, the voltage data and the temperature data of the secondary battery charged under the first charging working condition to obtain a detection result.

In some implementations of the second aspect, the charging device includes a secondary battery, the charging data includes current data and voltage data of the secondary battery charged under the second charging condition, and the determining module is specifically configured to: acquiring charging internal resistance corresponding to the secondary battery based on the current data and the voltage data; and performing impedance detection or lithium analysis detection on the secondary battery based on the charging internal resistance to obtain a detection result.

In a third aspect, an embodiment of the present application provides an electronic device, including: a processor and a memory storing computer program instructions; the steps of the charge detection method as described in the first aspect are implemented when the processor executes the computer program instructions.

In a fourth aspect, embodiments of the present application provide a computer-readable storage medium, on which computer program instructions are stored, and when executed by a processor, implement the steps of the charge detection method according to the first aspect.

In a fifth aspect, the present application provides a computer program product stored in a non-volatile storage medium, the computer program product being executed by at least one processor to implement the steps of the charge detection method according to the first aspect.

In a sixth aspect, an embodiment of the present application provides a chip, where the chip includes a processor and a communication interface, where the communication interface is coupled to the processor, and the processor is configured to execute a program or instructions to implement the steps of the charge detection method according to the first aspect.

The application provides a charging detection method, a charging detection device and a charging detection product, wherein in the charging process of a charging device, the charging detection mode of the charging device can be determined, and then a charging strategy matched with the charging detection mode is determined. On the basis, the charging equipment can be charged based on the charging strategy, the charging data of the charging equipment during charging based on the charging strategy is acquired, and due to the fact that the charging strategy is matched with the charging detection mode, compared with the charging data acquired under conventional charging, the charging data acquired based on the charging strategy can better reflect the performance of the secondary battery expected to be detected under the charging detection mode. Therefore, when the safety detection of the secondary battery is carried out by using the charging data obtained by charging under the charging strategy, the accuracy of the detection result can be improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the embodiments of the present application will be briefly described below.

Fig. 1 is a schematic flowchart of a charging detection method according to an embodiment of the present application;

fig. 2 is a schematic flowchart of a charge detection method according to another embodiment of the present application;

fig. 3 is a schematic flowchart of a charge detection method according to yet another embodiment of the present application;

fig. 4 is a schematic flowchart of a charge detection method according to yet another embodiment of the present application;

fig. 5 is a schematic flowchart of a charge detection method according to yet another embodiment of the present application;

fig. 6 is a schematic flowchart of a charge detection method according to yet another embodiment of the present application;

fig. 7 is a schematic flowchart of a charge detection method according to yet another embodiment of the present application;

fig. 8 is a schematic structural diagram of a charge detection device according to an embodiment of the present application;

fig. 9 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

Detailed Description

Features and exemplary embodiments of various aspects of the present application will be described in detail below, and in order to make objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are intended to be illustrative only and are not intended to be limiting. It will be apparent to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present application by illustrating examples thereof.

In order to ensure the charging performance of the secondary Battery in the electric equipment, a Battery Management System (Battery Management System) deployed in the electric equipment can perform safety detection on the secondary Battery during the charging process of the electric equipment. However, the reliability of safety detection in the conventional charging process is low, and the accuracy of the detection result is affected. In addition, for some safety detection realized depending on special charging conditions, the detection cannot be completed based on charging data obtained under conventional charging.

The conventional charging process may be constant current charging with a set current, and when the battery voltage rises to a charging cut-off voltage, the charging process is changed to constant voltage charging, so as to maintain the charging voltage at the charging cut-off voltage. At this time, the charging current gradually decreases, and when the current decreases to 1/10 of the set charging current, the charging is ended.

In order to solve the problems in the related art, embodiments of the present application provide a charging detection method, which may determine a charging detection mode of a charging device in a charging process of the charging device, and further determine a charging policy matched with the charging detection mode. On the basis, the charging equipment can be charged based on the charging strategy, the charging data of the charging equipment during charging based on the charging strategy is acquired, and due to the fact that the charging strategy is matched with the charging detection mode, compared with the charging data acquired under conventional charging, the performance expected to be detected by the secondary battery under the charging detection mode can be better reflected based on the charging data acquired based on the charging strategy. Therefore, when the charging data obtained by charging under the charging strategy is used for safety detection of the secondary battery, the accuracy of the detection result can be improved, and the problems that the reliability of safety detection in the conventional charging process is low and the accuracy of the detection result is influenced in the related art are solved.

The charging detection method provided by the embodiment of the present application is described in detail below with reference to the accompanying drawings through specific embodiments and application scenarios thereof.

Fig. 1 is a schematic flowchart of a charging detection method according to an embodiment of the present application, where an execution main body of the charging detection method may be an electronic device. The above-described execution body does not constitute a limitation of the present application.

The electronic device may be a charging device, for example, a charger.

For example, the charging device may be a device such as an electric two-wheeled vehicle, an electric motorcycle, an electric power tool, an unmanned aerial vehicle, an energy storage system, etc., which operates using electric energy of a secondary battery, which may be a lithium ion battery, a sodium ion battery, a solid-state battery, or the like.

As shown in fig. 1, a charging detection method provided in an embodiment of the present application may include steps 110 to 140.

And step 110, charging the charging equipment, and determining a charging detection mode of the charging equipment.

And step 120, determining a charging strategy matched with the charging detection mode based on the charging detection mode.

And step 130, charging the charging equipment according to the charging strategy, and acquiring charging data of the charging equipment in the charging process based on the charging strategy.

In step 140, a detection result of the charging device is determined based on the charging data.

According to the charging detection method provided by the embodiment of the application, in the process of charging the charging equipment, the charging detection mode of the charging equipment can be determined, and then the charging strategy matched with the charging detection mode is determined. On the basis, the charging equipment can be charged based on the charging strategy, the charging data of the charging equipment during charging based on the charging strategy is acquired, and due to the fact that the charging strategy is matched with the charging detection mode, compared with the charging data acquired under conventional charging, the charging data acquired based on the charging strategy can better reflect the performance of the secondary battery expected to be detected under the charging detection mode. Therefore, when the safety detection of the secondary battery is carried out by using the charging data obtained by charging under the charging strategy, the accuracy of the detection result can be improved.

The following describes specific implementation of the above steps in detail with reference to specific embodiments.

Referring to step 110, a charging detection mode of the charging device is determined for charging the charging device.

The charging device can correspond to a plurality of charging detection modes, and the electronic device can perform different types of safety detection on the secondary battery in the charging device in different charging detection modes.

For example, different types of security detection may include, but are not limited to: internal short circuit detection, battery capacity fade (SOH) detection, cell capacity variation detection, battery State Of Charge (SOC) value estimation, impedance detection, or lithium analysis detection.

In one example, the electronic device may provide four charging detection modes of "one-touch maintenance", "periodic maintenance", "performance optimization", "safety detection", in which the electronic device may perform internal short detection, impedance detection, and lithium analysis detection on the secondary battery in the charging device in the "safety detection" mode.

In one embodiment, step 110 may specifically include the following steps: in the process of charging the charging equipment, acquiring control instruction information of a detection mode; and determining the detection mode corresponding to the control instruction information as a charging detection mode.

Specifically, the electronic device may receive a user input that a user selects a charging detection mode in a charging process of the charging device, and in response to the user input, the electronic device obtains control instruction information of the detection mode and determines that the detection mode corresponding to the control instruction information is the charging detection mode; the user input may be touch input, voice input, gesture input, key input, and the like, and the application is not limited in this respect.

In one example, the electronic device may be provided with mechanical buttons 1, 2, 3, and 4 corresponding to the detection mode A, B, C, D, respectively, and the electronic device may receive a pressing input of the mechanical button 1 from a user, acquire control instruction information "mechanical button 1" of the detection mode in response to the pressing input, and determine the detection mode a corresponding to "mechanical button 1" as the charging detection mode at this time.

In another embodiment, step 110 may specifically include: and under the condition that the control instruction information of the detection mode is not acquired within the fourth duration, determining that the charging detection mode is the fourth detection mode.

Specifically, the fourth time length is not limited to a specific value, for example, the fourth time length may be set to 3s, and may also be set to other values, which is not specifically limited herein; and when the electronic equipment does not acquire the control instruction information of the detection mode within the fourth time period, namely the user input is not received, the electronic equipment defaults to select the fourth detection mode as the charging detection mode.

A charging strategy matching the charging detection pattern is determined based on the charging detection pattern, step 120.

The charging detection mode can be divided into a first detection mode, a second detection mode, a third detection mode and a fourth detection mode, and different charging detection modes correspond to different charging control strategies.

In some embodiments of the present application, the charging detection mode may be a first detection mode, and step 120 may specifically include: determining a first control strategy corresponding to the first detection mode as a charging strategy.

Wherein the first control strategy may include charging the charging device based on the first charging condition.

Illustratively, the first detection mode may be a "performance optimization" mode.

In one embodiment, as shown in fig. 2, in the case that the charging detection mode is the first detection mode, the electronic device may introduce the first charging condition into the charging device to perform at least one Of State Of charge SOC value estimation, battery capacity fade SOH detection, battery Power output capability (SOP) estimation, battery Energy output capability (SOE) estimation, and cell capacity difference detection on the charging device to obtain a detection result.

In some embodiments of the present application, the charge detection mode may be a second detection mode, fig. 3 is a flowchart of a charge detection method provided in another embodiment of the present application, and as shown in fig. 3, step 120 may include step 310 and step 320.

Step 310, acquiring a current charging frequency N corresponding to the charging equipment, wherein N is a positive integer;

in step 320, a second control strategy corresponding to the second detection mode is determined as a charging strategy based on the current charging number N.

The second control strategy may include charging the charging device for the nth time based on the second charging condition, and charging for the (N + 1) th time based on the first charging condition.

For example, the second detection mode may be a "safety detection" mode, and if the electronic device obtains that the current charging number is 10, the electronic device performs charging for the charging device for the 10 th time based on the second charging operating condition, and performs charging for the charging device for the 11 th time based on the first charging operating condition.

In one embodiment, under the condition that the charging detection mode is the second detection mode, if the current charging frequency is N, introducing the second charging working condition into the charging equipment so as to perform impedance detection and lithium precipitation detection on the charging equipment to obtain a detection result; and when the next charging is carried out, namely the current charging frequency is N +1, the first charging working condition is led into the charging equipment so as to carry out internal short circuit detection on the charging equipment and obtain a detection result.

In some embodiments of the present application, the charging detection mode may be a third detection mode, fig. 4 is a flowchart of a charging detection method provided in another embodiment of the present application, and as shown in fig. 4, step 120 may include step 410 and step 420.

Step 410, acquiring a current charging frequency N corresponding to the charging equipment, wherein N is a positive integer;

in step 420, based on the current charging number N, a third control strategy corresponding to the third detection mode is determined as the charging strategy.

The third control strategy comprises charging the charging equipment for the Nth time based on the first charging working condition, charging for the (N + 1) th time based on the second charging working condition, and charging for the (N + 2) th time based on the first charging working condition.

For example, the third detection mode may be a "one-touch maintenance" mode, where if the electronic device obtains that the current charging number is 10, the electronic device performs charging for the charging device for the 10 th time based on the first charging condition, performs charging for the charging device for the 11 th time based on the second charging condition, and performs charging for the charging device for the 12 th time based on the first charging condition.

In the embodiment of the application, because the charging data acquired under different charging conditions are different, in the third detection mode, the charging device is continuously charged for three times, and different charging data of the charging device can be acquired under different charging conditions, so that the charging device is subjected to safety detection and performance optimization.

In one embodiment, under the condition that the charging detection mode is the third detection mode, if the current charging frequency is N, the first charging working condition is introduced into the charging equipment so as to perform state of charge SOC value estimation, battery capacity attenuation SOH detection, battery power output capability SOP estimation, battery energy output capability SOE estimation and cell capacity difference detection on the charging equipment to obtain a detection result; when the next charging is carried out, namely the current charging frequency is N +1, introducing the second charging working condition into the charging equipment so as to carry out impedance detection and lithium analysis detection on the charging equipment to obtain a detection result; and guiding the first charging working condition into the charging equipment when the charging is carried out next time, namely the current charging time is N +2, so as to carry out internal short circuit detection on the charging equipment and obtain a detection result.

In some embodiments of the present application, the charge detection mode may be a fourth detection mode, fig. 5 is a flowchart of a charge detection method according to still another embodiment of the present application, and as shown in fig. 5, step 120 may include steps 510 to 530.

Step 510, acquiring the current charging times corresponding to the charging equipment;

step 520, performing remainder operation on the current charging times to obtain a remainder result;

step 530, in the case that the remainder result is a first value, determining that the charging strategy is to charge the charging equipment based on the first charging working condition; or under the condition that the surplus result is the second numerical value, determining the charging strategy to charge the charging equipment based on the second charging working condition; or, in the case that the remainder is the third value, determining that the charging strategy is to charge the charging equipment based on the normal charging working condition.

The conventional charging condition can be constant-current charging and then constant-voltage charging, and the third numerical value is a numerical value except the first numerical value and the second numerical value; the first, second and third values are positive integers, but are not limited to a specific value.

For example, the first numerical value may be set to 0 or 2, the second numerical value may be set to 1, and the third numerical value may be set to a positive integer other than 0, 1, and 2.

In one embodiment, performing the remainder operation on the current charging number may include: and the current charging times are left to the fourth numerical value.

The fourth value is not limited to a specific value, and may be set to 10, for example, or may be set to other values, which is not specifically limited herein.

In one embodiment, the first value may be set to 0 or 2, the second value may be set to 1, and when the charge detection mode is the fourth detection mode, the current charging frequency corresponding to the charging equipment is left over for 10 to obtain a left-over result, and if the left-over result is 0, the first charging condition is introduced into the charging equipment to perform SOC value estimation, SOH detection, SOP estimation of battery power output capability, SOE estimation of battery energy output capability, and cell capacity difference detection on the charging equipment to obtain a detection result; if the remainder result is 1, introducing the second charging working condition into the charging equipment to perform impedance detection and lithium separation detection on the charging equipment to obtain a detection result; if the remaining result is 2, introducing the charging equipment into a first charging working condition to perform internal short circuit detection on the charging equipment to obtain a detection result; and if the remainder result is a third numerical value except 0, 1 and 2, introducing the normal charging working condition into the charging equipment, and waiting for the end of charging.

Illustratively, the fourth detection mode may be a "periodic maintenance" mode.

In some embodiments of the present application, the charging device includes a secondary battery, and as shown in fig. 6, the first charging condition may include the steps of:

a1, standing the charging equipment in a target time period for a first time length.

Wherein the open circuit voltage of the secondary battery has a variation amount within a target period, which may be a non-plateau region of the Open Circuit Voltage (OCV) in which a variation in the state of charge (SOC) of the secondary battery hardly causes a variation in the open circuit voltage.

The first time period is not limited to a specific value, for example, the first time period may be set to 1h, or may be set to other values, and the present application is not limited thereto.

and a3, charging the charging equipment at the first charging multiplying power until the voltage of the secondary battery in the charging equipment reaches a charging cut-off voltage.

The first charging rate is not limited to a specific value, for example, the first charging rate may be set to 0.2C, or may be set to other values, and the application is not limited herein.

and a5, charging the charging equipment at a second charging multiplying factor until the voltage of the secondary battery in the charging equipment reaches a charging cut-off voltage, wherein the second charging multiplying factor is smaller than the first charging multiplying factor.

The second charging magnification is not limited to a specific value, for example, the second charging magnification may be set to 0.02C, or may be set to other values, and the application is not limited in particular.

and a7, standing the charging equipment for a second time length.

The second duration may be the same as or different from the first duration, and is not limited to a specific value, for example, the second duration may be set to 1h, or may be set to another value, which is not specifically limited herein.

In some embodiments of the present application, as shown in fig. 7, the second charging condition may include the following steps:

and b1, standing the charging equipment for a second time.

And b3, charging the charging equipment at the third charging multiplying power until the charging capacity of the charging equipment reaches the target value.

The third charging rate is not limited to a specific value, for example, the third charging rate may be set to 0.3C, or may be set to other values, and the present application is not limited thereto.

And b5, charging the charging equipment for a second time period by using the fourth charging rate, and then standing for a third time period.

The fourth charging rate is greater than the third charging rate, and the fourth charging rate is not limited to a specific value, for example, the fourth charging rate may be set to 0.5C, or may be set to other values, and the present application is not limited specifically herein.

b7, after the step b5, repeating the steps b3 and b5 until the voltage of the secondary battery in the charging device reaches the charge cutoff voltage.

And b9, charging the charging equipment by using the second charging multiplying factor until the voltage of the secondary battery in the charging equipment reaches a charging cut-off voltage, wherein the second charging multiplying factor is smaller than the third charging multiplying factor.

Step 130 is involved, charging the charging device according to the charging policy, and acquiring charging data of the charging device in the charging process based on the charging policy.

Specifically, the electronic device may obtain charging data of the charging device in real time, and the charging data may include current data and voltage data.

In one embodiment, the secondary battery may include a plurality of unit cells, and the voltage data may include voltage data of each unit cell.

In one embodiment, the charging data may also include temperature data, battery state of charge data, low temperature heating data, and the like.

In one embodiment, the secondary battery may include a plurality of unit cells, and the voltage data may include voltage data of each unit cell; the temperature data may include temperature data of each unit cell.

A determination is made of the charging device detection based on the charging data, step 140.

In some embodiments of the present application, the charging device comprises a secondary battery, the charging data comprises current data and voltage data of the secondary battery charged under the first charging condition, and the step 140 comprises at least one of:

acquiring the short circuit impedance of the secondary battery based on the current data and the voltage data so as to perform internal short circuit detection on the secondary battery; acquiring the charging capacity of the secondary battery based on the current data, and performing battery capacity fading SOH detection based on the charging capacity of the secondary battery to obtain a detection result; acquiring the cell capacity of each single cell based on the current data and the voltage data of each single cell in the secondary battery, and determining the cell capacity difference of at least one single cell to obtain a detection result; and calibrating the SOC value of the secondary battery based on the current data, the voltage data and the temperature data of the secondary battery charged under the first charging working condition to obtain a detection result.

In this embodiment, the electronic device may introduce the first charging condition into the charging device, so as to obtain current data and voltage data of the charging device charged under the first charging condition. Based on this, at least one of the detection of the internal short circuit of the secondary battery in the charging device, the detection of the battery capacity fade SOH, the estimation of the cell capacity difference and the state of charge SOC value can be realized by the current data and the voltage data. Therefore, the algorithm or the strategy for detecting the performance of the secondary battery in the charging equipment can be arranged in the electronic equipment, the electronic equipment effectively and safely detects the secondary battery by using the charging data generated in real time while charging the charging equipment, and the algorithm or the strategy is not required to be embedded into the BMS, so that the chip memory can be saved, and the cost is saved.

In some embodiments of the present application, the charging device includes a secondary battery, the charging data includes current data and voltage data of the secondary battery charged under the second charging condition, and step 140 may specifically include: acquiring charging internal resistance corresponding to the secondary battery based on the current data and the voltage data; and performing impedance detection or lithium analysis detection on the secondary battery based on the charging internal resistance to obtain a detection result.

The electronic equipment can acquire the relation between pulse current and voltage of different SOC sections along with time during the charging process of the charging equipment to perform lithium analysis, and lithium analysis detection is completed.

In the embodiment of the application, some battery performance detection modes realized depending on special charging working conditions (such as a first charging working condition and a second charging working condition) cannot be met under conventional charging or have low conventional charging reliability, so that a detection result is influenced. When the electronic equipment charges the charging equipment based on the second charging working condition, the current data and the voltage data generated by charging can be acquired, compared with the charging data acquired under the conventional charging working condition, the charging data charged under the second charging working condition can accurately determine the charging internal resistance of the secondary battery, and impedance detection or lithium analysis detection is carried out based on the charging internal resistance, so that the accuracy of a detection result can be improved.

It can be understood that, in the charging detection method provided in the embodiment of the present application, the execution main body may be an electronic device (a charger), or a control module used in the charging detection apparatus to execute the charging detection method, or may also be a Battery Management System (Battery Management System). The charging detection device will be described in detail below.

Fig. 8 is a schematic structural diagram of a charge detection device according to an embodiment of the present application. As shown in fig. 8, the charge detection apparatus 800 may include: a determination module 810 and an acquisition module 820.

The determining module 810 is configured to charge the charging device and determine a charging detection mode of the charging device; the determining module 810 is further configured to determine, based on the charging detection pattern, a charging policy that matches the charging detection pattern; an obtaining module 820, configured to charge the charging device according to the charging policy, and obtain charging data of the charging device in a charging process based on the charging policy; the determining module 810 is further configured to determine a detection result of the charging device based on the charging data.

In some embodiments of the present application, the charging detection mode is a first detection mode, and the determining module 810 is specifically configured to: determining a first control strategy corresponding to the first detection mode as a charging strategy, wherein the first control strategy comprises charging the charging device based on a first charging condition.

In some embodiments of the present application, the charging detection mode is a second detection mode, and the determining module 810 includes: the charging device comprises an acquisition unit, a charging unit and a charging unit, wherein the acquisition unit is used for acquiring the current charging times N corresponding to the charging device, and N is a positive integer; and the determining unit is used for determining a second control strategy corresponding to the second detection mode as a charging strategy based on the current charging frequency N, wherein the second control strategy comprises charging the charging equipment for the Nth time based on the second charging working condition and charging for the (N + 1) th time based on the first charging working condition.

In some embodiments of the present application, the charging detection mode is a third detection mode, and the determining module 810 includes: the charging device comprises an acquisition unit, a charging unit and a charging unit, wherein the acquisition unit is used for acquiring the current charging times N corresponding to the charging device, and N is a positive integer; and the determining unit is used for determining a third control strategy corresponding to the third detection mode as a charging strategy based on the current charging frequency N, wherein the third control strategy comprises charging the charging equipment for the Nth time based on the first charging working condition, charging for the (N + 1) th time based on the second charging working condition, and charging for the (N + 2) th time based on the first charging working condition.

In some embodiments of the present application, the charging detection mode is a fourth detection mode, and the determining module 810 includes: the acquisition unit is used for acquiring the current charging times corresponding to the charging equipment; the computing unit is used for carrying out residue taking operation on the current charging times to obtain a residue taking result; the determining unit is used for determining that the charging strategy is to charge the charging equipment based on the first charging working condition under the condition that the residue taking result is the first numerical value; or the determining unit is used for determining the charging strategy to charge the charging equipment based on the second charging working condition under the condition that the surplus result is the second numerical value; or, the determining unit is configured to determine that the charging strategy is to charge the charging device based on a normal charging condition when the remainder result is a third value, where the normal charging condition is constant-current charging and then constant-voltage charging, and the third value is a value other than the first value and the second value.

In some embodiments of the present application, the determining module 810 comprises: the acquisition unit is used for acquiring control instruction information of the detection mode in the process of charging the charging equipment; and the determining unit is used for determining the detection mode corresponding to the control instruction information as the charging detection mode.

In some embodiments of the present application, the determining module 810 is specifically configured to: and under the condition that the control instruction information of the detection mode is not acquired within the fourth duration, determining that the charging detection mode is the fourth detection mode.

In some embodiments of the present application, the charging device comprises a secondary battery, and the first charging condition comprises the steps of: a1, standing a charging device for a first time length in a target time period, wherein the open-circuit voltage of a secondary battery has a variable quantity in the target time period; a3, charging the charging equipment at the first charging multiplying power until the voltage of a secondary battery in the charging equipment reaches a charging cut-off voltage; a5, charging the charging equipment by using a second charging multiplying factor until the voltage of a secondary battery in the charging equipment reaches a charging cut-off voltage, wherein the second charging multiplying factor is smaller than the first charging multiplying factor; a7, standing the charging equipment for a second time length; the second charging condition comprises the following steps: b1, standing the charging equipment for a second time; b3, charging the charging equipment by using the third charging multiplying power until the charging capacity of the charging equipment reaches a target value; b5, charging the charging equipment for a second time period by using a fourth charging multiplying factor, and then standing for a third time period, wherein the fourth charging multiplying factor is larger than the third charging multiplying factor; b7, after the step b5, repeating the steps b3 and b5 until the voltage of the secondary battery in the charging device reaches the charge cut-off voltage; and b9, charging the charging equipment at a second charging multiplying factor until the voltage of the secondary battery in the charging equipment reaches a charging cut-off voltage, wherein the second charging multiplying factor is smaller than the third charging multiplying factor.

In some embodiments of the present application, the charging device comprises a secondary battery, the charging data comprises current data and voltage data of the secondary battery charged in the first charging condition, and the determining module 810 is specifically configured to at least one of: acquiring the short circuit impedance of the secondary battery based on the current data and the voltage data so as to perform internal short circuit detection on the secondary battery; acquiring the charging capacity of the secondary battery based on the current data, and performing battery capacity fading SOH detection based on the charging capacity of the secondary battery to obtain a detection result; acquiring the cell capacity of each single cell based on the current data and the voltage data of each single cell in the secondary battery, and determining the cell capacity difference of at least one single cell to obtain a detection result; and calibrating the SOC value of the secondary battery based on the current data, the voltage data and the temperature data of the secondary battery charged under the first charging working condition to obtain a detection result.

In some embodiments of the present application, the charging device includes a secondary battery, the charging data includes current data and voltage data of the secondary battery charged under the second charging condition, and the determining module 810 is specifically configured to: acquiring charging internal resistance corresponding to the secondary battery based on the current data and the voltage data; and performing impedance detection or lithium analysis detection on the secondary battery based on the charging internal resistance to obtain a detection result.

The charging detection device provided by the application can determine the charging detection mode of the charging equipment in the charging process of the charging equipment, and further determine the charging strategy matched with the charging detection mode. On the basis, the charging equipment can be charged based on the charging strategy, the charging data of the charging equipment during charging based on the charging strategy is acquired, and due to the fact that the charging strategy is matched with the charging detection mode, compared with the charging data acquired under conventional charging, the charging data acquired based on the charging strategy can better reflect the performance of the secondary battery expected to be detected under the charging detection mode. Therefore, when the charging data obtained by charging under the charging strategy is used for safety detection of the secondary battery, the accuracy of the detection result can be improved.

The charging detection apparatus provided in the embodiments of the present application can implement each process implemented by the electronic device in the method embodiments of fig. 1 to 7, and can implement the same technical effect, and is not described herein again to avoid repetition.

Fig. 9 is a schematic hardware structure diagram of an electronic device according to an embodiment of the present application.

As shown in fig. 9, the electronic device 900 in this embodiment may include a processor 901 and a memory 902 that stores computer program instructions.

Specifically, the processor 901 may include a Central Processing Unit (CPU), or an Application Specific Integrated Circuit (ASIC), or may be configured to implement one or more Integrated circuits of the embodiments of the present Application.

Memory 902 may include mass storage for data or instructions. By way of example, and not limitation, memory 902 may include a Hard Disk Drive (HDD), floppy Disk Drive, flash memory, optical Disk, magneto-optical Disk, magnetic tape, or Universal Serial Bus (USB) Drive or a combination of two or more of these. Memory 902 may include removable or non-removable (or fixed) media, where appropriate. The memory 902 may be internal or external to the integrated gateway disaster recovery device, where appropriate. In a particular embodiment, the memory 902 is a non-volatile solid-state memory. The Memory may include Read-Only Memory (ROM), random Access Memory (RAM), magnetic disk storage media devices, optical storage media devices, flash Memory devices, electrical, optical, or other physical/tangible Memory storage devices. Thus, in general, the memory includes one or more tangible (non-transitory) computer-readable storage media (e.g., memory devices) embodying software that includes computer-executable instructions and which, when executed (e.g., by one or more processors), is operable to perform the operations described with reference to the methods in accordance with embodiments of the application.

The processor 901 realizes any one of the charge detection methods or charge detection methods in the above embodiments by reading and executing computer program instructions stored in the memory 902.

In one example, electronic device 900 can also include a communication interface 903 and a bus 910. As shown in fig. 9, the processor 901, the memory 902, and the communication interface 903 are connected via a bus 910 to complete communication with each other.

The communication interface 903 is mainly used for implementing communication between modules, apparatuses, units and/or devices in this embodiment of the application.

Bus 910 includes hardware, software, or both to couple the components of the online data traffic billing device to each other. By way of example, and not limitation, a bus may include an Accelerated Graphics Port (AGP) or other graphics bus, an Enhanced Industry Standard Architecture (EISA) bus, a Front Side Bus (FSB), a Hypertransport (HT) interconnect, an Industry Standard Architecture (ISA) bus, an infiniband interconnect, a Low Pin Count (LPC) bus, a memory bus, a Micro Channel Architecture (MCA) bus, a Peripheral Component Interconnect (PCI) bus, a PCI-Express (PCI-X) bus, a Serial Advanced Technology Attachment (SATA) bus, a video electronics standards association local (VLB) bus, or other suitable bus or a combination of two or more of these. Bus 910 can include one or more buses, where appropriate. Although specific buses are described and shown in the embodiments of the application, any suitable buses or interconnects are contemplated by the application.

The electronic device provided in the embodiments of the present application can implement each process implemented by the electronic device in the method embodiments of fig. 1 to 7, and can implement the same technical effect, and is not described herein again to avoid repetition.

In addition, in combination with the charging detection method in the foregoing embodiments, the embodiments of the present application may be implemented by providing a computer storage medium. The computer storage medium having computer program instructions stored thereon; the computer program instructions, when executed by a processor, implement the steps of any of the charge detection methods in the above embodiments.

In combination with the charging detection method in the foregoing embodiments, the embodiments of the present application may provide a computer program product to implement. The (computer) program product is stored in a non-volatile storage medium, which program product, when executed by at least one processor, implements the steps of any one of the charge detection methods in the above embodiments.

The embodiment of the present application further provides a chip, where the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to execute a program or an instruction to implement each process of the above charging detection method embodiment, and can achieve the same technical effect, and in order to avoid repetition, the description is omitted here.

It should be understood that the chips mentioned in the embodiments of the present application may also be referred to as system-on-chip, system-on-chip or system-on-chip, etc.

It is to be understood that the present application is not limited to the particular arrangements and instrumentality described above and shown in the attached drawings. A detailed description of known methods is omitted herein for the sake of brevity. In the above embodiments, several specific steps are described and shown as examples. However, the method processes of the present application are not limited to the specific steps described and illustrated, and those skilled in the art can make various changes, modifications and additions, or change the order between the steps, after comprehending the spirit of the present application.

The functional blocks shown in the above-described structural block diagrams may be implemented as hardware, software, firmware, or a combination thereof. When implemented in hardware, it may be, for example, an electronic Circuit, an Application Specific Integrated Circuit (ASIC), suitable firmware, plug-in, function card, or the like. When implemented in software, the elements of the present application are the programs or code segments used to perform the required tasks. The program or code segments can be stored in a machine-readable medium or transmitted by a data signal carried in a carrier wave over a transmission medium or a communication link. A "machine-readable medium" may include any medium that can store or transfer information. Examples of a machine-readable medium include electronic circuits, semiconductor memory devices, ROM, flash memory, erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, fiber optic media, radio Frequency (RF) links, and so forth. The code segments may be downloaded via computer networks such as the internet, intranet, etc.

It should also be noted that the exemplary embodiments mentioned in this application describe some methods or systems based on a series of steps or devices. However, the present application is not limited to the order of the above-described steps, that is, the steps may be performed in the order mentioned in the embodiments, may be performed in an order different from the order in the embodiments, or may be performed simultaneously.

Aspects of the present disclosure are described above with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the disclosure. It will be understood that each block of the flowchart illustrations and/or block diagrams, and combinations of blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, enable the implementation of the functions/acts specified in the flowchart and/or block diagram block or blocks. Such a processor may be, but is not limited to, a general purpose processor, a special purpose processor, an application specific processor, or a field programmable logic circuit. It will also be understood that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware for performing the specified functions or acts, or combinations of special purpose hardware and computer instructions.

As described above, only the specific embodiments of the present application are provided, and it can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the system, the module and the unit described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again. It should be understood that the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the present application, and these modifications or substitutions should be covered within the scope of the present application.

Claims

1. A charge detection method, the method comprising:

charging a charging device, and determining a charging detection mode of the charging device;

determining a charging strategy matched with the charging detection mode based on the charging detection mode;

charging the charging equipment according to the charging strategy, and acquiring charging data of the charging equipment in a charging process based on the charging strategy;

determining a detection result of the charging device based on the charging data.

2. The method of claim 1, wherein the charging detection pattern is a first detection pattern, and wherein determining the charging strategy matching the charging detection pattern based on the charging detection pattern comprises:

determining a first control strategy corresponding to the first detection mode as the charging strategy, wherein the first control strategy comprises charging the charging device based on a first charging condition.

3. The method of claim 1, wherein the charging detection pattern is a second detection pattern, and wherein determining a charging strategy matching the charging detection pattern based on the charging detection pattern comprises:

acquiring the current charging times N corresponding to the charging equipment, wherein N is a positive integer;

and determining a second control strategy corresponding to the second detection mode as the charging strategy based on the current charging times N, wherein the second control strategy comprises charging the charging equipment for the Nth time based on a second charging working condition and charging for the (N + 1) th time based on a first charging working condition.

4. The method of claim 1, wherein the charging detection pattern is a third detection pattern, and wherein determining the charging strategy matching the charging detection pattern based on the charging detection pattern comprises:

and determining a third control strategy corresponding to the third detection mode as the charging strategy based on the current charging time N, wherein the third control strategy comprises charging the charging equipment for the Nth time based on a first charging working condition, charging for the (N + 1) th time based on a second charging working condition, and charging for the (N + 2) th time based on the first charging working condition.

5. The method of claim 1, wherein the charging detection pattern is a fourth detection pattern, and wherein determining the charging strategy matching the charging detection pattern based on the charging detection pattern comprises:

acquiring the current charging times corresponding to the charging equipment;

performing remainder operation on the current charging times to obtain a remainder result;

under the condition that the surplus result is a first numerical value, determining that the charging strategy is to charge the charging equipment based on a first charging working condition;

alternatively, the first and second electrodes may be,

under the condition that the surplus result is a second numerical value, determining that the charging strategy is to charge the charging equipment based on a second charging working condition;

alternatively, the first and second liquid crystal display panels may be,

and under the condition that the remainder result is a third numerical value, determining that the charging strategy is to charge the charging equipment based on a conventional charging working condition, wherein the conventional charging working condition is constant-current charging firstly and then constant-voltage charging, and the third numerical value is a numerical value except the first numerical value and the second numerical value.

6. The method according to any one of claims 1 to 5, wherein the charging a charging device and determining a charging detection mode corresponding to the charging device comprises:

acquiring control instruction information of a detection mode in the process of charging the charging equipment;

and determining a detection mode corresponding to the control instruction information as the charging detection mode.

7. The method of claim 5, wherein the charging a charging device and determining a charging detection mode corresponding to the charging device comprises:

and under the condition that the control instruction information of the detection mode is not acquired within a fourth time period, determining that the charging detection mode is the fourth detection mode.

8. The method of any one of claims 2-5, wherein the charging device comprises a secondary battery,

the first charging condition comprises the following steps:

a1, standing the charging equipment for a first time length in a target time period, wherein the open circuit voltage of the secondary battery has a variable quantity in the target time period;

a3, charging the charging equipment at a first charging multiplying power until the voltage of a secondary battery in the charging equipment reaches a charging cut-off voltage;

a5, charging the charging equipment by using a second charging multiplying factor until the voltage of a secondary battery in the charging equipment reaches a charging cut-off voltage, wherein the second charging multiplying factor is smaller than the first charging multiplying factor;

a7, standing the charging equipment for a second time length;

the second charging condition comprises the following steps:

b1, standing the charging equipment for a second time;

b3, charging the charging equipment at a third charging rate until the charging capacity of the charging equipment reaches a target value;

b5, charging the charging equipment for a second time period and then standing for a third time period by using a fourth charging multiplying factor, wherein the fourth charging multiplying factor is greater than the third charging multiplying factor;

b7, after the step b5, repeating the steps b3 and b5 until the voltage of the secondary battery in the charging device reaches the charge cutoff voltage;

and b9, charging the charging equipment by using the second charging multiplying factor until the voltage of a secondary battery in the charging equipment reaches a charging cut-off voltage, wherein the second charging multiplying factor is smaller than the third charging multiplying factor.

9. The method of any one of claims 2-5, wherein the charging device comprises a secondary battery, wherein the charging data comprises current data and voltage data of the secondary battery charged under the first charging condition, and wherein determining the detection result of the charging device based on the charging data comprises at least one of:

acquiring short-circuit impedance of the secondary battery based on the current data and the voltage data so as to perform internal short-circuit detection on the secondary battery;

acquiring the charging capacity of the secondary battery based on the current data, and performing battery capacity fading (SOH) detection based on the charging capacity of the secondary battery to obtain a detection result;

acquiring the cell capacity of each single cell based on the current data and the voltage data of each single cell in the secondary battery, and determining the cell capacity difference of at least one single cell to obtain the detection result;

and calibrating the SOC value of the secondary battery based on the current data, the voltage data and the temperature data of the secondary battery charged under the first charging working condition to obtain the detection result.

10. The method according to any one of claims 2-5, wherein the charging device comprises a secondary battery, the charging data comprises current data and voltage data of the secondary battery charged under the second charging condition, and the determining the detection result of the charging device based on the charging data comprises:

acquiring charging internal resistance corresponding to the secondary battery based on the current data and the voltage data;

and carrying out impedance detection or lithium analysis detection on the secondary battery based on the charging internal resistance to obtain the detection result.

11. A charge detection device, the device comprising:

the device comprises a determining module, a judging module and a judging module, wherein the determining module is used for charging the charging equipment and determining a charging detection mode of the charging equipment;

the determining module is further configured to determine, based on the charging detection pattern, a charging strategy matched with the charging detection pattern;

the acquisition module is used for charging the charging equipment according to the charging strategy and acquiring charging data of the charging equipment in the charging process based on the charging strategy;

the determining module is further configured to determine a detection result of the charging device based on the charging data.

12. An electronic device, characterized in that the electronic device comprises: a processor and a memory storing computer program instructions;

the processor, when executing the computer program instructions, implements the charge detection method of any of claims 1-10.

13. A computer program product, stored on a non-volatile storage medium, the program product being executable by at least one processor to implement the steps of a charge detection method as claimed in any one of claims 1 to 10.