WO2020233544A1

WO2020233544A1 - Battery test system and method

Info

Publication number: WO2020233544A1
Application number: PCT/CN2020/090841
Authority: WO
Inventors: 谢红斌; 林尚波
Original assignee: Oppo广东移动通信有限公司
Priority date: 2019-05-20
Filing date: 2020-05-18
Publication date: 2020-11-26
Also published as: CN111965553B; CN111965553A

Abstract

A battery test system and method. In the system, a battery device (12) is separately connected to a power supply device (10) and a battery test device (11). During a discharge process, the system can discharge the battery by the battery test device (11) according to preset process logic, so that the current is controlled during the discharge process of the battery. Thus, the battery discharge rate is effectively improved, the battery test time is reduced, the battery aging rate is slowed, and the accuracy of the battery test result is greatly improved.

Description

Battery testing system and method

Technical field

This application relates to the field of electronic technology, in particular to a battery testing system and method. .

Background technique

With the advent of batteries, they have many advantages such as high working voltage, large capacity, long cycle life and no memory effect, making them widely used in life. In order to ensure the safety of the battery during use, the battery needs to undergo rigorous testing before it is put into use.

At present, the battery test method is the whole machine test, which uses different charging strategies to charge the battery through the Microcontroller Unit (MCU), and the discharge is the actual normal power consumption of the terminal. Taking the battery cycle performance test as an example, the battery charge and discharge mode can be cycled periodically until the battery capacity drops to a certain value (usually 80% of the rated capacity), record the battery charge and discharge times, or compare The remaining capacity of the battery after the same cycle of cycles is used to characterize the cycle performance of the test battery.

However, in the above battery test process, the discharge test time is long, which easily accelerates the aging of the battery and reduces the accuracy of the test result.

Summary of the invention

Based on this, it is necessary to provide a battery testing system and method in response to the technical problem of long discharge test time during the above battery testing process, which easily accelerates the aging of the battery and reduces the accuracy of the test result.

In a first aspect, an embodiment of the present application provides a battery testing system, the system includes: the system includes: a power supply device, a battery test device, and a battery device, the battery device is respectively connected to the power supply device and the battery test device Connected; the power supply device for charging the battery in the battery device;

The battery testing equipment is used to control the discharge of the battery according to a preset step logic; the step logic is used to specify the current and duration of the battery discharge.

In one of the embodiments, the system further includes a control device, and the control device is respectively connected to the power supply device and the battery device;

The control device is configured to send a charging instruction to the power supply device; the charging instruction includes a current value to be charged; the power supply device is configured to send a battery in the battery device according to the current value to be charged Recharge.

In one of the embodiments, the system further includes a control switch;

The control device is also used to control the connection state between the battery device and the power supply device, and the connection state between the battery device and the battery test device through the control switch.

In one of the embodiments, the control device is configured to control the control switch during the charging process, turn on the connection between the battery device and the power supply device, and cut off the battery device and the battery Test the connection between the equipment.

In one of the embodiments, the control device is used to control the control switch during the discharging process, turn on the connection between the battery device and the battery test device, and cut off the battery device and the battery test device. Connection between power supply equipment.

In one of the embodiments, the control device is configured to control the control switch to turn on the connection between the battery device and the battery test device when the charging time reaches the preset charging time, and to cut off all The connection between the battery device and the power supply device.

In one of the embodiments, during the process of charging the battery by the power supply device, the battery testing device uses the minimum current of the battery testing device to charge the battery at a constant current.

In one of the embodiments, the battery testing device is specifically configured to detect the charging mode of the battery, and control the battery discharge according to the charging mode and the process logic.

In one of the embodiments, if the charging method is a non-constant voltage charging method, the battery testing device is configured to stop the battery testing device as the battery when the voltage of the battery reaches a preset threshold. Charging, and controlling the battery to discharge when the preset time period is reached.

In one of the embodiments, if the charging method is a constant voltage charging method, the battery testing device is configured to stop the battery testing device when the battery continues under the preset constant voltage for the preset duration. Charge the battery, and control the battery to discharge after reaching a preset time period.

In one of the embodiments, the control device is further configured to adjust the charging instruction according to the current battery state information of the battery.

In one of the embodiments, the control device is configured to determine the charging strategy corresponding to the current battery state information of the battery according to the mapping relationship between the battery state information and the charging strategy, and correspondingly according to the current battery state information The charging strategy adjusts the charging instructions.

In one of the embodiments, the battery device includes a fuel gauge; the control device is configured to read the current battery state information of the battery through the fuel gauge.

In one of the embodiments, it is characterized in that:

The power supply device and the battery testing device alternately charge and discharge the battery in cycles until the preset number of cycles is reached.

In one of the embodiments, the control device is connected to the battery device through a two-wire synchronous serial bus.

In one of the embodiments, the control device is connected to the power supply device through a universal serial bus.

In a second aspect, an embodiment of the present application provides a battery testing method, the method including:

Charge the battery in the battery device;

The battery is controlled to discharge according to a preset process logic; the process logic is used to specify the current and duration of the battery discharge.

In one of the embodiments, the charging the battery in the battery device includes:

Acquiring a charging instruction; the charging instruction includes the current value to be charged;

The battery device is charged according to the current value to be charged.

In one of the embodiments, the connection state between the battery device and the power supply device, and the connection state between the battery device and the battery test device are controlled by the control switch.

In one of the embodiments, the method for controlling the connection state between the battery device and the power supply device, and the connection state between the battery device and the battery test device through the control switch includes :

During the charging process, the control switch is controlled to turn on the connection between the battery device and the power supply device, and cut off the connection between the battery device and the battery test device.

During the discharging process, the control switch is controlled to turn on the connection between the battery device and the battery test device, and cut off the connection between the battery device and the power supply device.

In one of the embodiments, the control switch is controlled during the discharging process to turn on the connection between the battery device and the battery test device, and cut off the connection between the battery device and the power supply device Connection, including:

When the charging duration reaches the preset charging duration, the control switch is controlled to turn on the connection between the battery device and the battery testing device, and cut off the connection between the battery device and the power supply device.

In one of the embodiments, the charging mode of the battery is detected, and the battery discharge is controlled according to the charging mode and the process logic.

In one of the embodiments, if the charging mode is a non-constant voltage charging mode, when the voltage of the battery reaches a preset threshold, stop charging the battery, and after the preset time period is reached, control the The battery is discharged.

In one of the embodiments, if the charging method is a constant voltage charging method, when the battery is at a preset constant voltage for a duration of a preset duration, the battery will stop charging, and when the battery reaches the preset duration After a period of time, the battery is controlled to discharge.

In one of the embodiments, before the sending a charging instruction to the power supply device, the method includes:

The charging instruction is adjusted according to the current battery state information of the battery.

In one of the embodiments, the adjusting the charging instruction according to the current battery state information of the battery includes: determining the corresponding battery state information according to the mapping relationship between the battery state information and the charging strategy Charging strategy, and adjusting the charging instruction according to the charging strategy corresponding to the current battery state information.

In one of the embodiments, the method includes: reading the current battery state information of the battery through the fuel gauge. In one of the embodiments, the method includes: charging and discharging the battery alternately until a preset number of cycles is reached.

An embodiment of the application provides a battery testing system and method. The battery equipment in the system is respectively connected to the power supply equipment and the battery testing equipment. Because in the discharging process, the system can use the battery testing equipment to follow the preset process logic Discharging the battery allows the battery current to be controlled during the discharge process, effectively increasing the battery discharge speed, shortening the battery test time, slowing the battery aging rate, and greatly improving the accuracy of the battery test results.

Description of the drawings

FIG. 1 is a schematic diagram of a battery testing system provided by an embodiment;

FIG. 2 is a schematic diagram of a battery testing system provided by an embodiment;

FIG. 3 is a schematic diagram of a battery testing system provided by an embodiment;

4 is a schematic diagram of a battery testing system provided by an embodiment;

FIG. 5 is a schematic diagram of a battery testing system provided by an embodiment;

FIG. 6 is a schematic diagram of a relationship between battery current and voltage according to an embodiment;

FIG. 7 is a schematic flowchart of a current testing method provided by an embodiment;

FIG. 8 is a schematic flowchart of a current testing method provided by an embodiment.

Detailed ways

In order to make the purpose, technical solutions, and advantages of this application clearer, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the application, and not used to limit the application.

In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, not all of the embodiments.

Fig. 1 is a schematic diagram of a battery testing system provided by an embodiment. As shown in Fig. 1, the system includes a power supply device 10, a battery test device 11, and a battery device 12. The battery device 12 is connected to the power supply device 10 and the battery respectively. The test equipment 11 is connected; the power supply equipment 10 is used to charge the battery in the battery equipment 12; the battery test equipment 11 is used to control the battery discharge according to the preset process logic; the process logic is used to specify the current and duration of the battery discharge .

In this embodiment, the power supply device 10 includes an interface converter. The interface converter can be an independent hardware interface device that allows the hardware or electronic interface to be connected to other hardware or electronic interfaces, or it can be an information interface. There is no restriction on this. The battery device 12 may be a smart terminal device, such as a mobile phone, a notebook computer, etc., or a pre-built battery simulation device, etc., which is not limited in this embodiment. Among them, the battery testing device 11 may be a device that tests a series of parameters such as current, voltage, capacity, cycle, life, and internal resistance of the battery, for example, a battery test cabinet.

Among them, in the battery testing system, the battery device 12 is connected to the power supply device 10 and the battery test device 11 respectively, wherein the power supply device 10 is used to charge the battery in the battery device 12, and how to charge the battery by the power supply device The battery charging is not limited in this embodiment. For example, it may be controlled by another controller to charge the battery, or the power supply device may automatically charge the battery after being powered on, which is not limited in this embodiment. Among them, the battery testing equipment 11 is used to control the battery discharge according to a preset process logic, and the process logic specifies the current value and the discharge duration of the battery during discharge.

For example, in practical applications, the power supply device 10 charges the battery. After the battery is fully charged, the battery testing device 11 starts to discharge the battery, or the battery testing device 11 automatically starts to discharge the battery after detecting that the battery is fully charged . For example, referring to FIG. 1, the working process of the above-mentioned battery testing system may be: during the charging process of the battery, the power supply device 10 charges the battery in the battery device 12 until it is fully charged. During the discharging process of the battery, the battery testing device 11 starts to execute a preset discharging step logic, which is a preset program stored in the battery testing device 11, according to the preset step logic, The current for discharging the battery by the battery testing device 11 can be controlled, that is, the current for discharging the battery can be preset through the steps. For example, as shown in Table 1 below, the preset step logic can be to first set aside 5Min, then perform constant current discharge with a current of 6A, discharge for 30 minutes, and then execute the set step 5Min. The name of the process step set in, as well as the corresponding time length, current value and voltage value of each process step are not limited, and can be determined according to the actual situation.

Table 1

An embodiment of the present application provides a battery test system, in which the battery device 12 is connected to the power supply device 10 and the battery test device 11, respectively. Because during the discharging process, the system can use the battery test device 11 according to preset work The step logic discharges the battery, that is, it can appropriately control the current of the battery during the discharge according to the actual situation, which effectively improves the battery discharge speed, shortens the battery test time, slows the battery aging speed, and greatly improves The accuracy of battery test results is improved.

Based on the foregoing embodiment, as shown in FIG. 2, the battery testing system provided by the embodiment of the present application may further include a control device, which is connected to the power supply device and the battery device, respectively; and the control device is used to send charging to the power supply device. Command; the charging command includes the current value to be charged; the power supply device is used to charge the battery in the battery device according to the current value to be charged.

In this embodiment, the control device 13 has a certain control function. For example, the control device 13 can control the power supply device 10. The control device 13 can be controlled by a Microcontroller Unit (MCU), or can be controlled by The single-chip microcomputer, central processing unit (CPU), FPGA, etc. realize control, which is not limited in this embodiment. Wherein, the control device 13 is used to send a charging instruction to the power supply device 10; the charging instruction includes the current value to be charged; then the power supply device 10 described above charges the battery in the battery device according to the current value to be charged. In practical applications, the control device 13 can control the power supply device 10 to charge the battery through a charging command. The power supply device 10 charges the battery in the battery device 12 according to the charging command until it is fully charged, which ensures that the power supply device is charging the battery. Controllability of charging current.

It should be noted that, if the battery device 12 is a smart terminal device, the control device may also be a processor integrated in the smart terminal device, or a separate processor, micro-control unit, etc., with processing functions. Device, this embodiment does not specifically limit the setting method of the control device.

Optionally, the aforementioned control device 13 is connected to the battery device 12 through a two-wire synchronous serial bus. For example, if the control device 13 is an MCU, the MCU is connected to the battery device 12 through I2C, and the power supply device 10 is connected to the MCU through a type or USB data cable. It should also be noted that the connection between the control device 13 and the power supply device 10 and the battery device 12 is a communication connection and can perform data interaction, and the connection between the battery device 12 and the power supply device 10 and the battery test device 11 is an electrical connection. In order to realize the charging of the battery by the power supply device 10 and the discharge of the battery by the battery testing device 11.

In the above-mentioned embodiment, the battery device 12 can be connected to the power supply device 10 and the battery test device 11 in a variety of ways. Under different connection methods, the charging and discharging process is controlled differently. For example, the battery device 12 and the power supply When the device 10 is connected, the battery device 12 is disconnected from the battery test device 11; or, when the battery device 12 is disconnected from the power supply device 10, the battery device 12 is connected to the battery test device 11; or, the battery device 12 is connected to the power supply Both the device 10 and the battery testing device 11 are connected. The embodiments of the present application will illustrate the above two situations in detail through the following embodiments in FIGS. 3 to 6.

Based on the battery test system of the embodiment in FIG. 2 above, the control device 13 can control the connection state between the battery device 12 and the power supply device 10 and the battery test device 11 through a switch, as shown in FIG. 3, wherein the battery test system described above It also includes a control switch 14; the control device 13 is also used to control the connection state between the battery device 12 and the power supply device 10, and the connection state between the battery device 12 and the battery test device 11 through the control switch 14.

In this embodiment, the control switch 14 can be a MOS tube, of course, it can be other switches, as long as it can achieve the same function as the control switch 14. This embodiment is not limited, and the state of the control switch 14 The control device 13 controls the connection state between the battery device 12 and the power supply device 10 and the connection state between the battery device 12 and the battery test device 11 through the control switch 14. The solution of this embodiment is described in detail below in the first mode and the second mode respectively.

Manner 1: The control device 13 is used to control the control switch 14 during the charging process, turn on the connection between the battery device 12 and the power supply device 10, and cut off the connection between the battery device 12 and the battery testing device 11.

In this embodiment, when the battery test system performs the process of charging the battery, the control device 13 turns on the connection between the battery device 12 and the power supply device 10 through the control switch 14, and cuts off the battery device 12 and the battery test device 11 In this way, after the control device 13 sends the charging instruction to the power supply device 10, the power supply device 10 can directly charge the battery, and it is currently in the charging process, and the battery test device 11 does not need to work, then the battery device 12 and the battery are disconnected Test the connection between the equipment 11. In this way, during the battery charging process, the power supply device 10 charges the battery and cuts off the battery test device 11, which can avoid the influence of the battery test device 11 on charging and make the test results more prepared. In addition, when the power supply device 10 is working, the battery test device is cut off 11. You can save resources.

Manner 2: The control device 13 is used to control the control switch 14 during the discharging process, turn on the connection between the battery device 12 and the battery testing device 11, and cut off the connection between the battery device 12 and the power supply device 10.

In the present embodiment, when the battery test system performs the test process of discharging the battery, the control device 13 turns on the connection between the battery device 12 and the battery test device 11 through the control switch 14, and cuts off the battery device 12 from the power supply. In this way, the battery testing device 11 can directly discharge the battery, and the battery is currently in the discharging process, and the power supply device 10 does not need to work, then the connection between the battery device 12 and the power supply device 10 is cut off. Similarly, in this method, during the battery discharge process, the battery test cabinet is to discharge the battery, and the power supply device 10 is cut off, which can avoid the influence of the power supply device 10 on the discharge, making the test result more prepared, and when the battery testing device 11 is working, it is cut off The power supply device 10 can save resources.

Optionally, the control device 13 is used to control the control switch 14 when the charging duration reaches the preset charging duration, turn on the connection between the battery device 12 and the battery test device 11, and cut off the battery device 12 and the power supply device 10 The connection between.

Wherein, the control device 13 switches from the charging process to the discharging process, that is, from the connection between the battery device 12 and the power supply device 10 to the connection between the battery device 12 and the battery testing device 11, the battery charging time is required to reach the preset charging time length At this time, the control device 13 controls the control switch 14 to perform the connection switching action. The preset charging time length represents the preset maximum time length that the battery needs to be charged. This embodiment does not limit the specific time length value, which can be determined according to actual conditions.

For example, it is assumed that the control device 13 is an MCU, the battery test device 11 is a battery test cabinet, and the control switch 14 is a MOS tube, and is integrated in the MCU, as shown in Figure 4, during the charging process, the MCU controls the MOS tube to turn on The power supply device 10 is connected to the battery device 12, and sends a charging instruction to the power supply device 10, so that the power supply device 10 can charge the battery. During the discharging process, the MCU controls the MOS tube to turn on the connection between the battery test device 11 and the battery device 12, and the battery test device 11 automatically discharges the battery according to the preset process logic.

In the battery test system provided in this embodiment, the control device 13 can control the connection state between the battery device 12 and the power supply device 10, and the connection state between the battery device 12 and the battery test device 11 through the control switch 14, and they are different The connection status respectively corresponds to the charging or discharging process of the battery. In this way, the switching of the charging and discharging process of the battery is realized by controlling the switch 14, and the cycle test function of the battery is completed. It will neither affect the charging of the battery by the power supply device 10, nor It affects the discharge of the battery by the battery test equipment 11, which greatly facilitates the battery test equipment 11 to automatically adjust the discharge current of the battery during the discharge process.

Similarly, based on the battery test system of the embodiment in FIG. 2, an embodiment of the present application also provides a battery test system, wherein the control switch 14 is not required in the battery test system, that is, the battery device 12 and the power supply device 10 and the battery test device 11 are connected. Optionally, when the battery testing device 11 detects that the power supply device 10 is charging the battery, the battery testing device 11 uses the minimum current of the battery testing device to charge the battery at a constant current.

For example, if the control device 13 is an MCU and the battery test device 11 is a battery test cabinet, as shown in FIG. 5, during the charging process, the MCU sends a charging instruction to the power supply device 10 to realize the power supply device 10 to charge the battery. During the discharging process, the MCU sends a charge stop instruction to the power supply device 10, and the power supply device 10 stops charging the battery. At the same time, the battery testing device 11 automatically switches to the discharge mode, and discharges the battery according to the preset process logic.

In this embodiment, both the power supply device 10 and the battery test device 11 are connected to the battery device 12 in either the battery charging process or the battery discharge process. In practical applications, when the battery test device 11 detects the power supply device When 10 is the battery charging, the minimum accuracy current of the battery test equipment 11 is used as the lithium ion and constant current charging is also performed. For example, if the minimum accuracy current value of the battery test equipment 11 is 5mA, then the power supply device 10 supplies power to the battery At the same time, the battery test device 11 also supplies power to the battery with a current of 5 mA. Since the current provided by the battery test device 11 is very small, it will not affect the problem of excessive current in the battery during charging. In this way, the battery testing equipment 11 can monitor the status of the battery in real time, such as current, power, voltage and so on.

While the battery testing device 11 is always charging the battery, when the battery is fully charged, the battery testing device 11 switches from the charging state to the discharging state, and the power supply device 10 charges the battery in different ways, and the corresponding switching discharge mode is also different . In one of the embodiments, the battery testing device 11 is specifically used to detect the charging method of the battery, and discharge the battery according to the charging method and process logic. Optionally, if the charging method is a non-constant voltage charging method, the battery testing device 11 is specifically configured to stop charging the battery when the voltage of the battery reaches a preset threshold, and to control the battery after the preset time period is reached. Discharge. Optionally, if the charging method is a constant voltage charging method, the battery testing device 11 is specifically configured to stop charging the battery when the battery continues under the preset constant voltage for the preset duration, and the battery testing device stops charging the battery when it reaches the preset duration. After setting the duration, control battery discharge.

In this embodiment, the battery testing device 11 detects the charging mode of the battery, and discharges the battery according to the determined charging mode and preset process logic. If the charging mode is a non-constant voltage charging mode, the battery testing device 11 is When the voltage reaches the preset threshold, according to the preset step logic, first switch to the rest step, that is, stop charging the battery. After the rest step is over, the battery is discharged; if the charging method is constant voltage charging, the battery test equipment 11 When the duration of the battery under the preset constant voltage reaches the preset duration, switch to the rest step according to the preset step logic, that is, stop charging the battery, and discharge the battery after the rest step ends. It should be noted that, in the above-mentioned two ways, the time length of the idle step for switching the battery test equipment 11 may be equal or unequal, and the actual situation shall prevail. It is understandable that when the battery testing device 11 switches from the charging mode to the discharging mode, for the power supply device 10, it needs to stop running, where the stopping of the power supply device 10 can be executed by an instruction sent by the control device 13.

In the battery testing system provided in this embodiment, because the battery testing device 11 stops charging the battery, and automatically controls the battery to discharge after the preset time period is reached, that is, there is no need for an additional control device 13 to switch the charging and discharging mode through the control switch 14 and only It is necessary to start the charging and discharging process of the battery testing device 11, and the entire program will run automatically, which greatly improves the intelligence and speed of the entire battery testing process.

Through all the above embodiments, it is not difficult to understand that during the charging process, the current or voltage of the power supply device 10 charging the battery, and the power supply device 10 starting to charge the battery or stop charging the battery are all sent by the control device 13 If the charging instruction prevails, the control device 13 should adjust the content of the charging instruction in real time during the entire charging process. In one of the embodiments, the embodiment of the present application provides a battery testing system. The control device 13 is also used to The current battery status information adjusts the charging instructions. Optionally, the control device 13 is specifically configured to determine the charging strategy corresponding to the current battery state information of the battery according to the mapping relationship between the battery state information and the charging strategy, and adjust the charging instruction according to the charging strategy corresponding to the current battery state information. Optionally, the battery device 12 includes a fuel gauge; the control device 13 is used to read the current battery state information of the battery through the fuel gauge.

In this embodiment, the control device 13 adjusts the charging instruction according to the current battery state information of the battery, where the current battery state information represents parameter information such as the current battery voltage, current, or power. Specifically, the control device 13 can obtain the current battery state information of the battery through the fuel gauge on the battery device 12, and then the control device 13 determines the current battery state of the battery according to the mapping relationship between the pre-stored battery state information and the charging strategy The charging strategy corresponding to the information, for example, assuming that the current battery does not reach 4.2V, the corresponding charging strategy may be to charge the battery with a current of 5A. Alternatively, the control device 13 may adjust the corresponding charging strategy according to the power of the battery. When detecting that the total capacity value of the battery changes from Q1 to Q2, the charging current in the adjustment charging strategy is switched from a*Q1 to a*Q2. The mapping relationship between the pre-stored battery state information and the charging strategy is not limited in this embodiment, and may be determined according to actual conditions. Based on the charging strategy determined by the control device 13, the control device 13 adjusts the parameters in the charging instruction and sends the charging instruction to the power supply device 10, so that the power supply device 10 charges the battery with the matching parameters. It is understandable that during the charging process, the charging command sent by the control device 13 is adjusted in real time, that is, the power supply device 10 also adjusts the size of the battery charging parameters in real time. For example, as shown in FIG. 6, the battery is charged. The relationship between voltage and current during the process. Set the power supply device 10 to charge the battery with a current of 5A during the charging process. When the voltage reaches 4.2V, adjust the current to 3A according to the charging instruction and continue to charge the battery until the battery voltage is Up to 4.4V.

Optionally, an embodiment of the present application further provides a battery test system, in which the power supply device and the battery test device alternately charge and discharge the battery until the preset number of cycles is reached.

Among them, the embodiment of the present application provides a charging and discharging scenario during battery testing. In practical applications, the battery can be realized by a cycle of charging-discharging. The specific number of cycles can be changed according to actual conditions. For example, it is possible to perform the charging process only once, and then perform the discharging process once, the entire test process is over, and there is no need to recycle the secondary charge and discharge process. For example, if it is necessary to perform the second charge-discharge process in practical applications, during the process of controlling battery discharge by the battery test device, if the control device detects that the current voltage reaches the minimum threshold, it will start sending charge to the power supply device Command to make the power supply device start charging the battery.

In addition, an embodiment of the present application also provides a battery testing method. As shown in FIG. 7, the method includes:

S101: Charge a battery in a battery device.

S102: Control the battery discharge according to a preset process logic; the process logic is used to specify the current and duration of battery discharge.

The implementation principles and technical effects of the battery testing method provided by the foregoing embodiment are similar to those of the foregoing system embodiment, and will not be repeated here.

An embodiment of the present application provides a battery testing method. In the method, the power supply device charges the battery in the battery device, and the battery testing device controls battery discharge according to a preset process logic, where the process logic is used to specify battery discharge Current and duration. In the process of discharging, the battery test equipment can discharge the battery according to the preset process logic, that is, it can appropriately control the current of the battery during the discharging process according to the actual situation, which effectively improves the battery discharge speed , Shorten the battery test time, slow down the aging speed of the battery, and greatly improve the accuracy of the battery test results.

In one of the embodiments, the embodiment of the present application provides a battery testing method. As shown in FIG. 8, the above S101 step includes:

S201: Obtain a charging instruction; the charging instruction includes a current value to be charged.

S202: Charge the battery device according to the current value to be charged.

In one of the embodiments, an embodiment of the present application provides a battery testing method, and the method further includes:

The connection state between the battery device and the power supply device, and the connection state between the battery device and the battery test device are controlled by the control switch.

In one of the embodiments, the embodiment of the present application provides a battery testing method, wherein the connection state between the battery device and the power supply device is controlled by the control switch, and the battery device and the There are two options for the connection status between battery test equipment:

Method 1: Control the control switch during the charging process to turn on the connection between the battery device and the power supply device, and cut off the connection between the battery device and the battery test device.

Method 2: During the discharging process, the control switch is controlled to turn on the connection between the battery equipment and the battery test equipment, and cut off the connection between the battery equipment and the power supply equipment.

In one of the embodiments, the embodiment of the present application provides a battery testing method. The second method includes: when the charging time reaches the preset charging time, controlling the control switch to turn on the connection between the battery device and the battery test device , And cut off the connection between the battery device and the power supply device.

In one of the embodiments, the embodiment of the present application provides a battery testing method, the method further includes: in the process of charging the battery by the power supply device, the battery testing device uses the minimum current of the battery testing device to charge the battery at a constant current.

In one of the embodiments, the embodiment of the present application provides a battery testing method, the method further includes: detecting the charging mode of the battery, and controlling the battery discharge according to the charging mode and the process logic.

In one of the embodiments, the embodiment of the present application provides a battery testing method. The detecting the charging method of the battery and controlling the battery discharge according to the charging method and the process logic includes: if the charging method is a non-constant voltage charging method, Then, when the voltage of the battery reaches the preset threshold, stop charging the battery, and control the battery to discharge after reaching the preset time.

In one of the embodiments, the embodiment of the present application provides a battery testing method. The detecting the charging mode of the battery and controlling the battery discharge according to the charging mode and process logic includes: if the charging mode is a constant voltage charging mode, then When the duration of the battery under the preset constant voltage reaches the preset duration, stop charging the battery, and control the battery to discharge when the preset duration is reached.

In one of the embodiments, an embodiment of the present application provides a battery testing method, the method including: adjusting the charging instruction according to the current battery state information of the battery.

In one of the embodiments, an embodiment of the present application provides a battery testing method. The adjusting the charging instruction according to the current battery state information of the battery includes:

According to the mapping relationship between the battery state information and the charging strategy, the charging strategy corresponding to the current battery state information of the battery is determined, and the charging instruction is adjusted according to the charging strategy corresponding to the current battery state information.

In one of the embodiments, an embodiment of the present application provides a battery testing method, the method includes: reading the current battery state information of the battery through the fuel gauge.

In one of the embodiments, the embodiment of the present application provides a battery testing method, which further includes: alternately cycling charging and discharging the battery until the preset number of cycles is reached.

The implementation principles and technical effects of the battery testing methods provided by all the foregoing embodiments are similar to those of the foregoing system embodiments, and will not be repeated here.

It should be understood that although the various steps in the flowcharts of FIGS. 7 and 8 are shown in sequence as indicated by the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless specifically stated in this article, the execution of these steps is not strictly limited in order, and these steps can be executed in other orders. Moreover, at least part of the steps in Figures 7 and 8 may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily executed at the same time, but can be executed at different times. These sub-steps or The execution order of the stages is not necessarily carried out sequentially, but may be executed alternately or alternately with at least a part of other steps or sub-steps or stages of other steps.

The technical features of the above embodiments can be combined arbitrarily. In order to make the description concise, all possible combinations of the technical features in the above embodiments are not described. However, as long as there is no contradiction between the combinations of these technical features, they should It is considered as the range described in this specification.

The above examples only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the scope of the invention patent. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of this application, several modifications and improvements can be made, and these all fall within the protection scope of this application. Therefore, the scope of protection of the patent of this application shall be subject to the appended claims.

Claims

A battery test system, characterized in that the system includes: a power supply device, a battery test device and a battery device, the battery device is respectively connected to the power supply device and the battery test device;

The power supply device is used to charge a battery in the battery device;

The battery testing equipment is used to control the discharge of the battery according to a preset step logic; the step logic is used to specify the current and duration of the battery discharge.
The system according to claim 1, wherein the system further comprises a control device, and the control device is respectively connected to the power supply device and the battery device;

The control device is configured to send a charging instruction to the power supply device; the charging instruction includes the current value to be charged;

The power supply device is configured to charge the battery in the battery device according to the current value to be charged.
The system according to claim 2, wherein the system further comprises a control switch;

The control device is also used to control the connection state between the battery device and the power supply device, and the connection state between the battery device and the battery test device through the control switch.
The system according to claim 3, wherein the control device is used to control the control switch during the charging process, turn on the connection between the battery device and the power supply device, and cut off The connection between the battery device and the battery test device.
The system according to claim 3, wherein the control device is used to control the control switch during the discharging process to turn on the connection between the battery device and the battery test device, and Cut off the connection between the battery device and the power supply device.
The system according to claim 5, wherein the control device is configured to control the control switch to turn on the battery device and the battery test device when the charging duration reaches a preset charging duration And cut off the connection between the battery device and the power supply device.
The system according to claim 1 or 2, wherein when the power supply device is charging the battery, the battery test device uses the minimum current of the battery test device as the battery constant current Recharge.
The system according to claim 7, wherein the battery testing device is specifically configured to detect the charging mode of the battery, and control the battery discharge according to the charging mode and the process logic.
The system according to claim 8, wherein if the charging mode is a non-constant voltage charging mode, the battery testing device is configured to: when the voltage of the battery reaches a preset threshold, the The battery testing device stops charging the battery, and controls the battery to discharge when the preset time period is reached.
The system according to claim 8, wherein if the charging mode is a constant voltage charging mode, the battery testing equipment is used for the battery testing device for a preset duration of time under a preset constant voltage When the time, the battery testing device stops charging the battery, and controls the battery to discharge when the preset time period is reached.
The system according to claim 2, wherein the control device is further configured to adjust the charging instruction according to the current battery state information of the battery.
The system according to claim 11, wherein the control device is configured to determine the charging strategy corresponding to the current battery state information of the battery according to the mapping relationship between the battery state information and the charging strategy, and The charging instruction is adjusted according to the charging strategy corresponding to the current battery state information.
The system according to claim 11 or 12, wherein the battery device includes a fuel gauge; the control device is configured to read the current battery state information of the battery through the fuel gauge.
The system according to any one of the claims 1-6, wherein:

The power supply device and the battery testing device alternately charge and discharge the battery in cycles until the preset number of cycles is reached.
The system according to claim 1, wherein the control device is connected to the battery device through a two-wire synchronous serial bus.
The system according to claim 15, wherein the control device is connected to the power supply device via a universal serial bus.
A battery testing method, characterized in that the method includes:

Charge the battery in the battery device;

The battery is controlled to discharge according to a preset process logic; the process logic is used to specify the current and duration of the battery discharge.
The method of claim 17, wherein the charging the battery in the battery device comprises:

Acquiring a charging instruction; the charging instruction includes the current value to be charged;

The battery device is charged according to the current value to be charged.
The method of claim 18, wherein the method further comprises:

The connection state between the battery device and the power supply device, and the connection state between the battery device and the battery test device are controlled by the control switch.
The method according to claim 19, wherein the method for controlling the connection state between the battery device and the power supply device through the control switch, and the relationship between the battery device and the battery test device The connection status between, including:

During the charging process, the control switch is controlled to turn on the connection between the battery device and the power supply device, and cut off the connection between the battery device and the battery test device.
The method according to claim 19, wherein the method for controlling the connection state between the battery device and the power supply device through the control switch, and the relationship between the battery device and the battery test device The connection status between, including:

During the discharging process, the control switch is controlled to turn on the connection between the battery device and the battery test device, and cut off the connection between the battery device and the power supply device.
22. The method of claim 21, wherein the control switch is controlled during the discharging process to turn on the connection between the battery device and the battery test device, and cut off the battery device and the battery test device. The connection between the power supply equipment includes:

When the charging duration reaches the preset charging duration, the control switch is controlled to turn on the connection between the battery device and the battery testing device, and cut off the connection between the battery device and the power supply device.
The method according to claim 17, wherein, during the process of charging the battery by the power supply device, the battery testing device uses the minimum current of the battery testing device to charge the battery with a constant current.
The method according to claim 23, wherein the charging mode of the battery is detected, and the battery discharge is controlled according to the charging mode and the process logic.
The method according to claim 24, wherein if the charging mode is a non-constant voltage charging mode, when the voltage of the battery reaches a preset threshold, the battery is stopped charging, and when the voltage reaches the preset After a period of time, the battery is controlled to discharge.
The system according to claim 24, wherein if the charging method is a constant voltage charging method, when the battery continues at a predetermined constant voltage for a predetermined time period, the stop is The battery is charged, and after a preset time period is reached, the battery is controlled to discharge.
The method according to any one of claims 18-26, wherein before the sending a charging instruction to the power supply device, the method comprises:

The charging instruction is adjusted according to the current battery state information of the battery.
The method according to claim 27, wherein the adjusting the charging instruction according to the current battery state information of the battery comprises:

According to the mapping relationship between the battery state information and the charging strategy, the charging strategy corresponding to the current battery state information of the battery is determined, and the charging instruction is adjusted according to the charging strategy corresponding to the current battery state information.
The method according to claim 28, wherein the method comprises: reading the current battery state information of the battery through the fuel gauge.
The method according to claims 18-26, wherein the method comprises: alternately cycling charging and discharging the battery until a preset number of cycles is reached.