CN114089205B - Charging limiting current detection method, device and system and storage medium - Google Patents
Charging limiting current detection method, device and system and storage medium Download PDFInfo
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- CN114089205B CN114089205B CN202210069938.3A CN202210069938A CN114089205B CN 114089205 B CN114089205 B CN 114089205B CN 202210069938 A CN202210069938 A CN 202210069938A CN 114089205 B CN114089205 B CN 114089205B
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Abstract
The invention provides a charging limit current detection method, a device, a system and a storage medium, wherein the charging limit current detection method comprises the following steps: the method comprises the steps that charging equipment is controlled to charge a battery to be detected by a plurality of target charging currents respectively under the condition that the battery to be detected is in a target electric quantity stage, wherein the target charging currents are larger than the rated charging currents of the battery to be detected; acquiring battery state parameters corresponding to a battery to be detected after the battery is charged under a plurality of target charging currents; and determining the maximum target charging current corresponding to the undamaged state of the battery state parameter as the charging limit current of the target electric quantity stage. According to the charging limit current detection method, the device, the system and the storage medium, the battery to be detected is tried through a plurality of target charging currents, the maximum charging current which does not cause damage to the battery is used as the charging limit current, the charging limit current can be determined quickly and efficiently, the real charging capacity of the battery can be mastered conveniently, and the charging safety is improved.
Description
Technical Field
The invention relates to the technical field of new energy, in particular to a charging limit current detection method, a charging limit current detection device, a charging limit current detection system and a storage medium.
Background
With the development of new energy technology, batteries can be used for supplying power to vehicles, working machines and various terminal devices, the batteries can be charged, current is supplied to the batteries through charging equipment in the process of charging the batteries so that the batteries accumulate charge and energy, the charging power needs to be controlled, if the charging power is too high, the batteries can be damaged, and risks of explosion or leakage of corrosive chemical materials are caused, so that a safe charging mode needs to be adopted.
The current charging mode is mainly to detect the state of charge of the battery in the charging process so as to adjust the charging current in real time, so that the charging limit current of the battery is not definitely obtained, the real charging capability of the battery is difficult to master, and the safety is poor.
Disclosure of Invention
The invention provides a charging limiting current detection method, a device, a system and a storage medium, which are used for solving the defects that in the prior art, the charging state of a battery is mainly detected in the charging process, so that the charging current is adjusted in real time, the charging limiting current of the battery is not definitely obtained, the real charging capacity of the battery is difficult to master, and the safety is poor, realizing the purpose of quickly and efficiently determining the charging limiting current of the battery to be detected, conveniently mastering the real charging capacity of the battery, and improving the charging safety.
The invention provides a charging limit current detection method, which comprises the following steps: the method comprises the steps that charging equipment is controlled to charge a battery to be detected by a plurality of target charging currents respectively under the condition that the battery to be detected is in a target electric quantity stage, wherein the target charging currents are larger than the rated charging currents of the battery to be detected; acquiring corresponding battery state parameters of the battery to be detected after the battery to be detected is charged under a plurality of target charging currents; and determining the maximum target charging current corresponding to the battery state parameter in the undamaged state as the charging limit current of the target electric quantity stage.
According to the charging limit current detection method provided by the invention, when a battery to be detected is in a target electric quantity stage, the control charging device charges the battery to be detected with a plurality of target charging currents respectively, and the method comprises the following steps: and controlling the charging equipment to charge the battery to be detected in a complete charging stage, wherein the complete charging stage comprises a target electric quantity stage and a reference electric quantity stage, the battery to be detected is charged with the target charging current under the condition that the battery to be detected is in the target electric quantity stage, and the battery to be detected is charged with the rated charging current under the condition that the battery to be detected is in the reference electric quantity stage.
According to the charging limiting current detection method provided by the present invention, before the controlling the charging device charges the battery to be detected with a plurality of target charging currents respectively when the battery to be detected is in the target electric quantity stage, the method further includes: acquiring a battery capacity parameter of the battery to be detected; dividing a plurality of target electric quantity stages for the battery to be detected based on the battery capacity parameter; after the step of taking the maximum target charging current corresponding to the battery state parameter in the undamaged state as the charging limit current of the target electric quantity stage, the method further includes: and determining a charging limit current curve of the battery to be detected based on the charging limit currents of the plurality of target electric quantity phases.
According to the charging limiting current detection method provided by the invention, the sequence of the target electric quantity stages is arranged from small to large according to the electric quantity of the corresponding battery to be detected, and the target charging current corresponding to the next target electric quantity stage is smaller than the target charging current corresponding to the previous target electric quantity stage.
According to the charging limit current detection method provided by the invention, the step of dividing the battery to be detected into a plurality of target electric quantity stages based on the battery capacity parameter comprises the following steps: and equally dividing the battery capacity parameters to obtain a plurality of target electric quantity stages. The battery to be detected is obtained after full-filling and discharging circulation of the new battery is carried out for the target times.
The present invention also provides a charging limit current detection device, including: the control module is used for controlling the charging equipment to charge the battery to be detected by a plurality of target charging currents respectively under the condition that the battery to be detected is in a target electric quantity stage, wherein the target charging currents are larger than the rated charging currents of the battery to be detected; the acquisition module is used for acquiring corresponding battery state parameters of the battery to be detected after the battery to be detected is charged under a plurality of target charging currents; and the determining module is used for determining the maximum target charging current corresponding to the undamaged battery state parameter as the charging limit current of the target electric quantity stage.
The present invention also provides a charging limit current detection system, including: a battery to be detected; the charging equipment is electrically connected with the battery to be detected; the sensor is electrically connected with the battery to be detected; the charging-limiting-current detection device as described above, the charging apparatus, and the sensor are electrically connected to the charging-limiting-current detection device.
The invention also provides an electronic device, which comprises a memory, a processor and a computer program stored on the memory and capable of running on the processor, wherein the processor executes the program to realize the steps of the charging limiting current detection method.
The present invention also provides a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the charging limit current detection method as described in any one of the above.
The invention also provides a computer program product comprising a computer program which, when executed by a processor, carries out the steps of the method of detecting a charging limit current as described in any one of the above.
According to the charging limit current detection method, the device, the system and the storage medium, the battery to be detected is tried through the target charging currents, the maximum target charging current which cannot cause damage to the battery to be detected is used as the charging limit current of the battery to be detected in the target electric quantity stage, the charging limit current of the battery to be detected can be determined quickly and efficiently, the real charging capacity of the battery can be mastered conveniently, and the charging safety is improved.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a schematic flow chart of a charge limit current detection method provided by the present invention;
FIG. 2 is a schematic diagram of a charging limiting current curve of the charging limiting current detection method provided by the present invention;
fig. 3 is a schematic structural diagram of a charging limit current detection device provided by the present invention;
fig. 4 is a schematic structural diagram of an electronic device provided in the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
The charging limit current detection method, apparatus, system and storage medium of the present invention are described below with reference to fig. 1 to 4.
The charging limiting current detection method can be executed by a charging limiting current detection device, the charging limiting current detection device can comprise a processor with a logic operation function, the charging limiting current detection device can be electrically connected with charging equipment, the charging equipment can charge a battery to be detected, the charging limiting current detection device can also comprise a sensor, the sensor can be electrically connected with the battery to be detected, and the sensor can detect the battery capacity parameter and the battery state parameter of the battery to be detected.
As shown in fig. 1, the present invention provides a charge limit current detection method, which includes the following steps 110 to 130.
It can be understood that the battery to be detected may be a lithium battery, a plurality of batteries to be detected of the same type may be prepared, a battery capacity parameter of the battery to be detected may be identified, the battery capacity parameter is a size of a charge that the battery can bear, the battery capacity parameter is one of important performance indexes for measuring battery performance, and it represents an electric quantity discharged by the battery under conditions of a certain discharge rate, temperature, end voltage, and the like, and the battery capacity parameter may be in units of ampere-hour (a · H for short, 1A · H = 3600C).
In the process of charging the battery to be detected, the electric quantity of the battery to be detected can be gradually increased, the electric quantity of the battery can also be represented by a state of charge (SOC), and then the charging stage of the battery to be detected can be divided into a plurality of target electric quantity stages according to the electric quantity increasing stage of the battery, for example, as shown in table 1, the target electric quantity stages can be divided into 0-20% SOC, 20-40% SOC, 40-60% SOC, 60-80% SOC and 80-100% SOC.
Table 1: schematic table of multiple target electric quantity phases of charging limiting current detection method
The battery to be detected can be charged through the charging equipment, and when the battery to be detected is in a target electric quantity stage, the battery to be detected can be charged through a plurality of target charging currents respectively, for example, a plurality of batteries to be detected can be prepared simultaneously, each battery to be detected is charged through one target charging current, and different target charging currents are given to different batteries to be detected.
The plurality of target charging currents are all larger than the rated charging current, that is, the target charging current exceeding the rated charging current is used for charging the battery to be detected.
For example, the target electric quantity stage may be 20% SOC to 40% SOC, a plurality of batteries to be detected may be prepared, when the state of charge parameters of the plurality of batteries to be detected all reach 20% SOC, different charging currents may be given to different batteries to be detected at this time, the batteries to be detected may be charged until the state of charge parameters of the batteries to be detected reach 40% SOC, for example, the target charging current of the first battery to be detected 1A, the target charging current of the second battery to be detected 2A, and the target charging current of the third battery to be detected 3A may be given, and the rated charging current of the batteries to be detected may be 0.8A.
And step 120, acquiring battery state parameters corresponding to the battery to be detected after the battery is charged under the plurality of target charging currents.
It can be understood that, after the batteries to be detected are charged by utilizing a plurality of target charging currents respectively, the influences caused by the batteries to be detected are different, the plurality of target charging currents are not applied to the same batteries to be detected, but the batteries to be detected of the same type are charged, at the moment, battery state parameters of different batteries to be detected, which are charged by applying different target charging currents, are obtained, for example, the lithium precipitation condition of a negative pole piece of the battery can be shot by a camera, when the negative pole piece does not precipitate lithium, the battery state parameters are considered to be normal, that is, the batteries to be detected are not damaged, and when the negative pole piece precipitates lithium, the battery state parameters are considered to be abnormal, that is, the batteries to be detected are damaged.
It can be understood that different target charging currents are used for charging the battery to be detected, the obtained battery state parameters of the battery to be detected are different, the battery state parameter of the battery to be detected may be in a damaged state or in an undamaged state, at this time, the target charging currents corresponding to the battery state parameters obtained in step 120 that are in the undamaged state are compared, and the maximum target charging current is selected from the target charging currents as the charging limit current of the battery to be detected in the target electric quantity stage.
By the mode, the battery to be detected is tried by utilizing the target charging currents, the maximum target charging current which cannot cause the damage of the battery to be detected is used as the charging limit current of the battery to be detected in the target electric quantity stage, and therefore the charging limit current of the battery to be detected in the target electric quantity stage can be conveniently and quickly tested.
According to the charging limiting current detection method provided by the invention, the battery to be detected is tried by a plurality of target charging currents, the maximum target charging current which cannot cause damage to the battery to be detected is used as the charging limiting current of the battery to be detected in the target electric quantity stage, the charging limiting current of the battery to be detected can be determined quickly and efficiently, the real charging capacity of the battery can be mastered conveniently, and the charging safety is improved.
In some embodiments, the full charge phase of the battery to be tested comprises a target charge phase and a reference charge phase.
That is to say, the state of charge parameters of the battery to be detected may include a target electric quantity stage and a reference electric quantity stage in the charging process from 0 to 100% SOC, where the reference electric quantity stage is other electric quantity stages except the target electric quantity stage in the complete charging stage of the battery, for example, the target electric quantity stage may be 0% to 20% SOC, and the reference electric quantity stage may be 20% to 100% SOC.
Controlling a charging device to charge a battery to be detected by a plurality of target charging currents respectively under the condition that the battery to be detected is in a target electric quantity stage, comprising: and controlling the charging equipment to charge the battery to be detected in a complete charging stage, wherein the battery to be detected is charged with a target charging current under the condition that the battery to be detected is in a target electric quantity stage, and the battery to be detected is charged with a rated charging current under the condition that the battery to be detected is in a reference electric quantity stage.
It can be understood that when a certain determined battery to be detected is charged, the charging process can be divided into two stages, one stage is a target electric quantity stage, and the other stage is a reference electric quantity stage, when the target electric quantity stage is adopted, the battery to be detected is charged with a target charging current, when the reference electric quantity stage is adopted, the battery to be detected is charged with a rated charging current, that is, when each battery to be detected is tested, a complete charging process is performed, that is, the state of charge parameter of the battery to be detected is charged from 0 to 100% SOC.
By carrying out a complete full charge process on the battery to be detected, a real battery charging scene can be ensured to be simulated, so that the measured charging limit current of the battery to be detected at a target electric quantity stage is more accurate.
In some embodiments, before controlling the charging device to charge the battery to be detected with a plurality of target charging currents respectively when the battery to be detected is in the target electric quantity stage, the method further includes: acquiring a battery capacity parameter of a battery to be detected; and dividing the battery to be detected into a plurality of target electric quantity stages based on the battery capacity parameter.
It can be understood that, in the process of charging the battery to be detected, the electric quantity of the battery to be detected can be gradually increased, the electric quantity of the battery can also be represented by a state of charge parameter (SOC), and then the charging stage of the battery to be detected can be divided into a plurality of target electric quantity stages according to the electric quantity increasing stage of the battery, for example, the target electric quantity stages can be divided into 0-20% SOC, 20% SOC-40% SOC, 40% SOC-60% SOC, 60% SOC-80% SOC and 80% SOC-100% SOC.
The charging limit current detection may be performed for different target electric quantity phases, which may correspond to different charging limit currents.
As shown in fig. 2, after the maximum target charging current corresponding to the undamaged battery state parameter is used as the charging limit current of the target electric quantity stage, the method further includes: and determining a charging limit current curve of the battery to be detected based on the charging limit currents of the plurality of target electric quantity stages.
It can be understood that after the charging limit currents of different target electric quantity stages are determined, the charging limit currents of different stages can be drawn in the same coordinate system, so that a charging limit current curve of the battery to be detected can be obtained, and the charging limit current curve of the battery to be detected can be a dynamically changing curve, so that the charging capability of the battery to be detected can be mastered.
In some embodiments, the sequence of the target electric quantity stages is arranged from small to large according to the electric quantity of the corresponding battery to be detected, and the target charging current corresponding to the next target electric quantity stage is smaller than the target charging current corresponding to the previous target electric quantity stage.
It can be understood that, as shown in table 1, during the process of charging the battery to be detected, the electric quantity of the battery to be detected is gradually increased, and the corresponding target electric quantity stage is also gradually advanced from front to back along with the increase of the electric quantity, for example, the first target electric quantity stage may be 0-20% SOC, the second target electric quantity stage may be 20% SOC-40% SOC, the third target electric quantity stage may be 40% SOC-60% SOC, the fourth target electric quantity stage may be 60% SOC-80% SOC, and the fifth target electric quantity stage may be 80% SOC-100% SOC, the target charging current corresponding to the next target electric quantity stage is smaller than the target charging current corresponding to the previous target electric quantity stage, for example, the target charging current at the fifth target electric quantity stage is smaller than the target charging current at the fourth target electric quantity stage, that is to say, in the process of charging the battery to be detected, along with the increase of electric quantity, the target charging current applied to the battery to be detected is gradually reduced.
In some embodiments, the dividing the battery to be detected into a plurality of target electric quantity phases based on the battery capacity parameter includes: and (5) equally dividing the battery capacity parameters to obtain a plurality of target electric quantity stages.
It can be understood that the battery capacity parameters can be proportionally divided, for example, a target power stage can be divided every 20%, for example, the first target power stage can be 0-20% SOC, the second target power stage can be 20% SOC-40% SOC, the third target power stage can be 40% SOC-60% SOC, the fourth target power stage can be 60% SOC-80% SOC, and the fifth target power stage can be 80% SOC-100% SOC.
In some embodiments, the battery to be tested is obtained after a target number of full fill cycles for a new battery.
It will be appreciated that the new battery may be a new lithium battery or lead storage battery that has not been charged or discharged, or may be another type of battery, and that the new battery may be subjected to a plurality of full charge discharge cycles, where full charge refers to charging the battery from a state of charge parameter of 0 to a state of charge parameter of 100%, and full discharge refers to discharging the battery from a state of charge parameter of 100% to 0. The target number of times may be 10 to 30 times, for example, may be 20 times.
In a specific application scene, brand new lithium batteries with the same type and smaller errors can be taken and fully charged for 20 times. Carrying out capacity calibration on the batch of lithium batteries, wherein the capacity is marked as 1 SOC; the target electric quantity stage is divided into a plurality of stages, for example, the target electric quantity stage is divided into five stages, namely 0% to 20% SOC, 20% SOC to 40% SOC, 40% SOC to 60% SOC, 60% SOC to 80% SOC and 80% SOC to 100% SOC, and each target electric quantity stage is in a constant current charging mode. And a plurality of groups of constant current charging multiplying power are preliminarily set in the target electric quantity stage, the rest are the reference electric quantity stage, and a fixed constant current charging mode, namely, the rated charging current is adopted for charging in the reference electric quantity stage.
As shown in table 1, the target charge stage is 0% to 20% SOC, and 3 sets of target charging currents are set, that is: and C _ A1/C _ A2/C _ A3, wherein C _ A1 is more than C _ A2 is more than C _ A3 is more than C0, and charging is carried out on the reference electric quantity stage at 20% SOC-100% SOC according to the rated charging current C0.
The target electric quantity stage is 20% SOC ~40% SOC, sets up 3 groups of target charging current, promptly: c _ B1/C _ B2/C _ B3, wherein C _ B1 is larger than C _ B2 and larger than C _ B3 is larger than C0, and charging is carried out according to rated charging current C0 when reference electric quantity stage is 0% -20% SOC and 40% -100% SOC.
The target electric quantity stage is 40% SOC ~60% SOC, sets up 3 sets of target charging current, promptly: c _ C1/C _ C2/C _ C3, wherein C _ C1 is larger than C _ C2 and is larger than C _ C3 is larger than C0, and charging is carried out according to rated charging current C0 when reference electric quantity stage is 0% -40% SOC and 60% -100% SOC.
The target electric quantity stage is 60% SOC ~80% SOC, sets up 3 sets of target charging current, promptly: and C _ D1/C _ D2/C _ D3, wherein C _ D1 is more than C _ D2 is more than C _ D3 is more than C0, and charging is carried out according to rated charging current C0 when the reference electric quantity stage is 0% -60% SOC and 80% -100% SOC.
The target electric quantity stage is 80% SOC ~100% SOC, sets up 3 groups of target charging current, promptly: c _ E1/C _ E2/C _ E3, wherein C _ E1 is larger than C _ E2 and C _ E3 is larger than C0, and charging is carried out on the reference electric quantity stage at 0% -80% SOC according to the rated charging current C0.
The other SOC intervals are sequentially set. Based on the battery characteristics, the target charging current for the previous target charge stage is greater than the target charging current for the next target charge stage, i.e., C _ A1 > C _ A2 > C _ A3 > C _ B1 > C _ B2 > C _ B3 > C _ D1 > C _ D2 > C _ D3 > C _ E1 > C _ E2 > C _ E3 > C0.
As shown in fig. 2, after the battery to be detected is charged, the battery to be detected can be disassembled, the target charging current corresponding to the target electric quantity stage is determined by observing the lithium analysis condition of the negative electrode piece, and the limit charging capacity of the lithium battery can be obtained by fitting the limit charging current of each target electric quantity stage.
The charging limit current detection device provided by the present invention is described below, and the charging limit current detection device described below and the charging limit current detection method described above may be referred to in correspondence with each other.
As shown in fig. 3, the present invention also provides a charge limit current detection device including: a control module 410, an acquisition module 420, and a determination module 430.
The control module 410 is configured to control the charging device to charge the battery to be detected with a plurality of target charging currents respectively when the battery to be detected is in the target electric quantity stage, where the target charging current is greater than a rated charging current of the battery to be detected.
The obtaining module 420 is configured to obtain battery state parameters corresponding to the battery to be detected after the battery is charged under the multiple target charging currents.
The determining module 430 is configured to determine a maximum target charging current corresponding to the battery state parameter in the undamaged state as the charging limit current of the target electric quantity stage.
According to the charging limiting current detection device, the battery to be detected is tried through the plurality of target charging currents, the maximum target charging current which cannot cause damage to the battery to be detected is used as the charging limiting current of the battery to be detected in the target electric quantity stage, the charging limiting current of the battery to be detected can be determined quickly and efficiently, the real charging capacity of the battery can be mastered conveniently, and the charging safety is improved.
The present invention also provides a charging limit current detection system, including: a battery to be detected; the charging equipment is electrically connected with the battery to be detected; the sensor is electrically connected with the battery to be detected; the charging-limiting-current detection device as described above, the charging apparatus, and the sensor are electrically connected to the charging-limiting-current detection device. The charging limiting current detection device can control the charging equipment to charge the battery to be detected by a plurality of target charging currents respectively under the condition that the battery to be detected is in a target electric quantity stage; acquiring battery state parameters corresponding to a battery to be detected after the battery is charged under a plurality of target charging currents; the maximum target charging current corresponding to the battery state parameter in the undamaged state is determined as the charging limit current of the target electric quantity stage, so that the charging equipment is controlled, the overcharging of the battery to be detected by the charging equipment is avoided, and the safety performance in the charging process is improved.
Fig. 4 illustrates a physical structure diagram of an electronic device, which may include, as shown in fig. 4: a processor (processor)510, a communication Interface (Communications Interface)520, a memory (memory)530 and a communication bus 540, wherein the processor 510, the communication Interface 520 and the memory 530 communicate with each other via the communication bus 540. Processor 510 may invoke logic instructions in memory 530 to perform a charge limit current detection method comprising: the method comprises the steps that charging equipment is controlled to charge a battery to be detected by a plurality of target charging currents respectively under the condition that the battery to be detected is in a target electric quantity stage, wherein the target charging currents are larger than the rated charging currents of the battery to be detected; acquiring corresponding battery state parameters of the battery to be detected after the battery to be detected is charged under a plurality of target charging currents; and determining the maximum target charging current corresponding to the battery state parameter in the undamaged state as the charging limit current of the target electric quantity stage.
According to the charging limiting current detection method provided by the invention, the battery to be detected is tried by a plurality of target charging currents, the maximum target charging current which cannot cause damage to the battery to be detected is used as the charging limiting current of the battery to be detected in the target electric quantity stage, the charging limiting current of the battery to be detected can be determined quickly and efficiently, the real charging capacity of the battery can be mastered conveniently, and the charging safety is improved.
Furthermore, the logic instructions in the memory 530 may be implemented in the form of software functional units and stored in a computer readable storage medium when the software functional units are sold or used as independent products. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
In another aspect, the present invention also provides a computer program product, the computer program product including a computer program, the computer program being stored on a non-transitory computer-readable storage medium, wherein when the computer program is executed by a processor, a computer is capable of executing the charging limit current detection method provided by the above methods, the method including: the method comprises the steps that charging equipment is controlled to charge a battery to be detected by a plurality of target charging currents respectively under the condition that the battery to be detected is in a target electric quantity stage, wherein the target charging currents are larger than the rated charging currents of the battery to be detected; acquiring corresponding battery state parameters of the battery to be detected after the battery to be detected is charged under a plurality of target charging currents; and determining the maximum target charging current corresponding to the battery state parameter in the undamaged state as the charging limit current of the target electric quantity stage.
According to the charging limiting current detection method provided by the invention, the battery to be detected is tried by a plurality of target charging currents, the maximum target charging current which cannot cause damage to the battery to be detected is used as the charging limiting current of the battery to be detected in the target electric quantity stage, the charging limiting current of the battery to be detected can be determined quickly and efficiently, the real charging capacity of the battery can be mastered conveniently, and the charging safety is improved.
In yet another aspect, the present invention also provides a non-transitory computer-readable storage medium having stored thereon a computer program, which when executed by a processor, is implemented to perform the charging limit current detection method provided by the above methods, the method comprising: the method comprises the steps that charging equipment is controlled to charge a battery to be detected by a plurality of target charging currents respectively under the condition that the battery to be detected is in a target electric quantity stage, wherein the target charging currents are larger than the rated charging currents of the battery to be detected; acquiring corresponding battery state parameters of the battery to be detected after the battery to be detected is charged under a plurality of target charging currents; and determining the maximum target charging current corresponding to the battery state parameter in the undamaged state as the charging limit current of the target electric quantity stage.
According to the charging limiting current detection method provided by the invention, the battery to be detected is tried by a plurality of target charging currents, the maximum target charging current which cannot cause damage to the battery to be detected is used as the charging limiting current of the battery to be detected in the target electric quantity stage, the charging limiting current of the battery to be detected can be determined quickly and efficiently, the real charging capacity of the battery can be mastered conveniently, and the charging safety is improved.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. Based on the understanding, the above technical solutions substantially or otherwise contributing to the prior art may be embodied in the form of a software product, which may be stored in a computer-readable storage medium, such as ROM/RAM, magnetic disk, optical disk, etc., and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method according to the various embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (9)
1. A charge limiting current detection method, comprising:
the method comprises the steps that charging of a battery to be detected is carried out by a charging device in a complete charging stage, wherein the complete charging stage comprises a target electric quantity stage and a reference electric quantity stage, the charging device is controlled to charge the battery to be detected by a plurality of target charging currents respectively under the condition that the battery to be detected is in the target electric quantity stage, the target charging currents are larger than rated charging currents of the battery to be detected, and the battery to be detected is charged by the rated charging currents under the condition that the battery to be detected is in the reference electric quantity stage;
acquiring corresponding battery state parameters of the battery to be detected after the battery to be detected is charged under a plurality of target charging currents;
and determining the maximum target charging current corresponding to the battery state parameter in the undamaged state as the charging limit current of the target electric quantity stage.
2. The charging limit current detection method according to claim 1, wherein before the controlling the charging device charges the battery to be detected with a plurality of target charging currents, respectively, in a case where the battery to be detected is in a target charge stage, the method further comprises:
acquiring a battery capacity parameter of the battery to be detected;
dividing a plurality of target electric quantity stages for the battery to be detected based on the battery capacity parameter;
after the step of taking the maximum target charging current corresponding to the battery state parameter in the undamaged state as the charging limit current of the target electric quantity stage, the method further includes:
and determining a charging limit current curve of the battery to be detected based on the charging limit currents of the plurality of target electric quantity phases.
3. The method according to claim 2, wherein the target electric quantity phases are arranged in sequence from small to large according to the electric quantity of the corresponding battery to be detected, and the target charging current corresponding to the next target electric quantity phase is smaller than the target charging current corresponding to the previous target electric quantity phase.
4. The method for detecting the charging limit current according to claim 2, wherein the step of dividing the battery to be detected into a plurality of target electric quantity phases based on the battery capacity parameter comprises:
and equally dividing the battery capacity parameters to obtain a plurality of target electric quantity stages.
5. The charging limit current detection method according to any one of claims 1 to 4, wherein the battery to be detected is obtained after a new battery is subjected to a target number of full charge and discharge cycles.
6. A charging limit current detection device, characterized by comprising:
the control module is used for controlling the charging equipment to charge a battery to be detected in a complete charging stage, wherein the complete charging stage comprises a target electric quantity stage and a reference electric quantity stage, the charging equipment is controlled to respectively charge the battery to be detected by a plurality of target charging currents under the condition that the battery to be detected is in the target electric quantity stage, the target charging currents are larger than the rated charging currents of the battery to be detected, and the battery to be detected is charged by the rated charging currents under the condition that the battery to be detected is in the reference electric quantity stage;
the acquisition module is used for acquiring corresponding battery state parameters of the battery to be detected after the battery to be detected is charged under a plurality of target charging currents;
and the determining module is used for determining the maximum target charging current corresponding to the undamaged battery state parameter as the charging limit current of the target electric quantity stage.
7. A charge limit current detection system, comprising:
a battery to be detected;
the charging equipment is electrically connected with the battery to be detected;
the sensor is electrically connected with the battery to be detected;
the charging-limit-current detecting device as claimed in claim 6, wherein the charging apparatus and the sensor are electrically connected to the charging-limit-current detecting device.
8. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the steps of the charge limit current detection method according to any one of claims 1 to 5 are implemented when the processor executes the program.
9. A non-transitory computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the charge limiting current detection method according to any one of claims 1 to 5.
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