Battery, battery test method, related device, test equipment and test system

Abstract

The invention discloses a battery, a battery testing method, a related device, testing equipment and a testing system, the battery comprises a shell, a voltage sampling system and a controller, and the shell is provided with a positive electrode and a negative electrode; two detection ends of the voltage sampling system are respectively connected with the positive electrode and the negative electrode, and the voltage sampling system is used for detecting the voltage between the positive electrode and the negative electrode to obtain the voltage at two ends of the battery; the controller is connected with the output end of the voltage sampling system and used for generating a preset response signal in response to the situation that the change condition of the voltage at the two ends of the battery meets a preset change condition. According to the scheme, the battery can automatically detect the voltage at the two ends.

Description

Technical Field

[0001] The present application relates to the field of testing technology, and in particular to a battery, a battery testing method, related devices, testing equipment and a testing system. Background Art

[0002] At present, batteries are increasingly used in people's daily lives, such as power batteries used as core components of electric vehicles. The voltage or temperature at both ends of the battery and other data may reflect the health status of the battery, but the current method for collecting the voltage at both ends of the battery is generally to set up a voltage sampling system in the power-consuming device, and connect the battery to the voltage sampling system to obtain the voltage at both ends of the battery. The problems with this method include that a voltage sampling system must be set up in the power-consuming device to collect the voltage at both ends of the battery, and some power-consuming devices may not have a voltage sampling system, so that the voltage at both ends of the battery cannot be collected. Summary of the invention

[0003] The present application at least provides a battery, a battery testing method, related devices, testing equipment and a testing system.

[0004] The present application provides a battery, which includes: a shell, a voltage sampling system and a controller, wherein a positive electrode and a negative electrode are arranged on the shell; two detection ends of the voltage sampling system are respectively connected to the positive electrode and the negative electrode, and are used to detect the voltage between the positive electrode and the negative electrode to obtain the voltage at both ends of the battery; the controller is connected to the output end of the voltage sampling system, and is used to generate a preset response signal in response to the change of the voltage at both ends of the battery satisfying a preset change condition.

[0005] In the above scheme, by setting a voltage sampling system on the battery, and connecting the two detection terminals of the voltage sampling system to the positive electrode and the negative electrode of the battery respectively, the voltage sampling system can sample the voltage at both ends of the battery. In addition, the controller is connected to the output terminal of the voltage sampling system, so that the controller can generate a preset response signal when the change of the voltage at both ends of the battery meets the preset change condition. The preset response signal can be used to judge whether the battery is qualified in the future. Compared with triggering the controller to generate a preset response signal by reaching a specific timer time, the triggering condition of this scheme is more flexible.

[0006] In some embodiments, the battery further includes a voltage divider circuit, which is disposed between the voltage sampling system and the positive electrode and the negative electrode.

[0007] In the above scheme, generally speaking, the voltage value that the voltage sampling system can collect is less than 3V. This scheme can conveniently reduce a large voltage to a small voltage by setting a voltage divider circuit between the voltage sampling system and the positive electrode and the negative electrode, so that the voltage sampling system can sample a larger voltage.

[0008] In some embodiments, the battery further includes a communication system, the communication system is connected to the controller, and the controller is used to control the communication system to send data.

[0009] In the above solution, by providing a communication system on the battery, the battery can communicate with an external device or load.

[0010] In some embodiments, the housing includes a shell having an opening and an end cover, the positive electrode and the negative electrode are arranged on a side of the end cover away from the shell, and the controller and the voltage sampling system are connected to the end cover.

[0011] In the above scheme, by connecting the communication system, the voltage sampling system and the controller to the end cover respectively, the communication system, the voltage sampling system and the controller can be conveniently removed from the battery for daily maintenance or overhaul.

[0012] In some embodiments, the controller and the voltage sampling system are arranged on a side of the end cover facing the housing.

[0013] In the above scheme, in the above scheme, by setting the voltage sampling system on the side of the end cap facing the shell, that is, setting it inside the battery, it is more convenient to carry and can reduce the interference of external factors during the voltage sampling process, thereby improving the accuracy of the sampled voltage data. In addition, the controller is also set on the side of the end cap facing the shell to facilitate the interaction between the controller and the voltage sampling system.

[0014] In some embodiments, the controller includes a threshold circuit and a signal generator, one end of the threshold circuit is connected to the output end of the voltage sampling system, and the other end is connected to the signal generator. The signal generator is used to generate a preset response signal when receiving a signal output by the threshold circuit.

[0015] In the above scheme, by setting a threshold circuit in the control, it is convenient to detect whether the voltage output by the voltage sampling system reaches a preset value.

[0016] In some embodiments, there are at least two threshold circuits, one end of each threshold circuit is connected to the output end of the voltage sampling system, and the other end is connected to a signal generator, and the signal generator is used to generate a preset response signal when receiving signals output by all threshold circuits in sequence.

[0017] In the above solution, by setting two threshold circuits, the condition of the preset response signal generated by the signal generator can be made more stringent, and the subsequent detection of whether the battery is qualified by using the preset response signal is more accurate.

[0018] In some embodiments, the controller and the voltage sampling system are integrated on a chip.

[0019] In the above solution, by integrating the voltage sampling system and the controller on a chip, the space occupied by the discrete chip can be reduced, thereby achieving the effect of relatively reducing the volume of the battery.

[0020] The present application provides a battery testing method, which is applied to a testing device, and the testing device is connected to the above-mentioned battery. The battery testing method includes: the testing device inputs an electrical signal of a preset waveform to the battery; determines whether a preset response signal output by the battery is received, and the preset response signal is issued when the battery detects that the change in the voltage at both ends of the battery meets the preset change condition; and determines that the battery is qualified in response to receiving the preset response signal output by the battery.

[0021] In the above scheme, the test equipment inputs an electrical signal of a preset waveform to the battery, and then the voltage change at both ends of the battery is detected by the battery in the battery. If the battery is qualified, the battery will output a preset response signal after detecting that the change in the voltage at both ends of the battery itself meets the preset change conditions. Therefore, after the test equipment receives the preset response signal, it can be determined that the battery is qualified. This scheme simplifies the triggering conditions for the battery to output the preset response signal, making battery testing more convenient.

[0022] In some embodiments, determining whether a preset response signal output by the battery is received includes: determining whether a waveform of the received response signal is a target waveform; and determining that the preset response signal is received in response to the waveform of the received response signal being the target waveform.

[0023] In the above scheme, by judging whether the waveform of the received response signal is the target waveform, it is possible to judge whether the battery has an abnormality. For example, if the waveform of the response signal is inconsistent with the preset target waveform, it is likely that the battery has an abnormality, resulting in the inability to perform the corresponding function normally.

[0024] In some embodiments, in response to the waveform of the received response signal being a target waveform, determining that a preset response signal has been received includes: in response to the waveform of the response signal being the target waveform, determining whether the duration of the response signal is a preset duration; in response to the duration of the response signal being the preset duration, determining that the preset response signal has been received.

[0025] In the above scheme, if the duration of the response signal cannot reach the preset duration or continues after reaching the preset duration, it is likely that there is something wrong with the battery. If the battery in the battery is not checked, various problems may occur during the subsequent use of the battery.

[0026] In some embodiments, the method further includes: receiving an adjustment instruction for the preset duration; and adjusting the preset duration stored in the test device based on the adjustment instruction.

[0027] In the above solution, by dynamically adjusting the duration, the battery testing process can be made more flexible.

[0028] In some embodiments, the response signal includes a first response signal and a second response signal, the target waveform includes a first target waveform and a second target waveform, the first response signal and the second response signal are received at different times, and in response to the waveform of the received response signal being the target waveform, it is determined that a preset response signal is received, including: in response to the waveform of the first response signal being the first target waveform and the waveform of the second response signal being the second target waveform, it is determined that a preset response signal is received.

[0029] In the above solution, by using multiple response signals to determine whether a battery is qualified, the test result can be made more accurate.

[0030] In some embodiments, the method further includes: determining that the battery is unqualified in response to not receiving a preset response signal output by the battery.

[0031] In the above scheme, if an abnormality occurs in the battery, causing the battery to be unable to detect the voltage change at both ends of the battery, or failing to generate or transmit a preset response signal after detecting the voltage change at both ends of the battery, the test equipment will be unable to receive the preset response signal. In this way, the faulty battery can be identified, facilitating subsequent maintenance of the battery.

[0032] The present application provides a battery testing method, which is applied to the above-mentioned battery. The battery is connected to a testing device, and the testing device is used to input an electrical signal of a preset waveform to the battery. The battery testing method includes: judging whether the voltage change at both ends of the battery meets a preset change condition; generating a preset response signal in response to the voltage change at both ends of the battery meeting the preset change condition; and sending the preset response signal to the testing device so that the testing device determines that the battery is qualified based on the preset response signal.

[0033] In the above scheme, an electrical signal of a preset waveform is input to the battery through the test equipment, and then the voltage change at both ends of the battery is detected through the battery in the battery. If the battery is qualified, the battery in the battery will output a preset response signal after detecting that the change in the voltage at both ends of the battery meets the preset change conditions. Therefore, after the test equipment receives the preset response signal, it can be determined that the battery is qualified. This scheme simplifies the triggering conditions for the battery to output the preset response signal, making battery testing more convenient.

[0034] In some embodiments, determining whether a voltage change across a battery satisfies a preset change condition includes: determining whether the voltage across the battery reaches a first voltage value and a second voltage value in sequence; and determining that the voltage change across the battery satisfies a preset change condition in response to the voltage across the battery reaching the first voltage value and the second voltage value in sequence.

[0035] In the above scheme, by using two voltage thresholds to trigger the battery to generate a preset response signal, compared with using a single threshold to trigger the battery to generate a preset response signal, this scheme can reduce the possibility of erroneously triggering the battery to generate a preset response signal, making the battery test result more accurate.

[0036] In some embodiments, the response signal includes a first response signal and a second response signal, and the first response signal and the second response signal respectively correspond to preset change conditions, so that the test device determines that the battery is qualified based on the first response signal and the second response signal.

[0037] In the above scheme, by setting the first response signal and the second response signal, the first response signal and the second response signal respectively correspond to preset change conditions, that is, two conditions for triggering the battery to generate a response signal are set. By using multiple response signals to determine whether the battery is qualified, the test result can be made more accurate.

[0038] In some embodiments, the duration of the preset response signal is a preset duration.

[0039] In the above scheme, if the duration of the response signal cannot reach the preset duration or continues after reaching the preset duration, it is likely that there is an abnormality in the function of the battery or other modules in the battery. If the batteries in the battery are not checked, various problems may arise during the subsequent use of the battery.

[0040] In some embodiments, the method further includes: receiving an adjustment instruction for one or more of the preset duration, the first voltage value, and the second voltage value; and adjusting one or more of the preset duration, the first voltage value, and the second voltage value in response to the adjustment instruction.

[0041] In the above solution, by dynamically adjusting one or more of the preset duration, the first voltage value, and the second voltage value, the battery testing process can be made more flexible.

[0042] The present application provides a battery testing device, which is arranged in a testing device, the testing device is connected to a battery, and a battery is arranged in the battery. The battery testing device includes: an output module, a signal receiving module and a processing module; the output module is used to input an electrical signal of a preset waveform to the battery; the signal receiving module is used to determine whether a preset response signal output by the battery is received, and the preset response signal is issued when the battery detects that the change in the voltage at both ends of the battery meets the preset conditions; the processing module is used to determine that the battery is qualified in response to receiving the preset response signal output by the battery.

[0043] The present application provides a testing device, which includes the above-mentioned testing device including a memory and a processor, and the processor is used to execute program instructions stored in the memory to implement the above-mentioned first battery testing method.

[0044] The present application provides a battery testing system, comprising the above-mentioned testing device and the above-mentioned battery, wherein the testing device is connected to the battery so that the testing device can test the battery.

[0045] The present invention provides an electrical device, comprising the above-mentioned battery.

[0046] In the above scheme, by setting a voltage sampling system on the battery, and connecting the two detection terminals of the voltage sampling system to the positive electrode and the negative electrode of the battery respectively, the voltage sampling system can sample the voltage at both ends of the battery. In addition, the controller is connected to the output terminal of the voltage sampling system, so that the controller can generate a preset response signal when the change of the voltage at both ends of the battery meets the preset change condition, and the preset response signal can be used to judge whether the battery is qualified in the future.

[0047] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] The drawings herein are incorporated into the specification and constitute a part of the specification. These drawings illustrate embodiments consistent with the present application and are used together with the specification to illustrate the technical solution of the present application.

[0049] Figure 1 is a schematic structural diagram of a vehicle provided in some embodiments;

[0050] Figure 2 The structure of the battery provided by some embodiments is shown in FIG. Figure 1 ;

[0051] Figure 3 The structure of the battery provided by some embodiments is shown in FIG. Figure 2 ;

[0052] Figure 4 is a schematic diagram of the structure of a controller provided in some embodiments;

[0053] Figure 5a is a flowchart of an embodiment of a battery testing method provided by some embodiments;

[0054] Figure 5b is a schematic diagram of a sub-flow chart of step S12 in a battery testing method provided in some embodiments;

[0055] Figure 6a is a flowchart of another embodiment of a battery testing method provided in some embodiments;

[0056] Figure 6b The voltage change at both ends of the battery and the duration of the preset response signal provided by some embodiments are schematic diagrams. Figure 1 ;

[0057] Figure 6c The voltage change at both ends of the battery and the duration of the preset response signal provided by some embodiments are schematic diagrams. Figure 2 ;

[0058] Figure 7 is a structural schematic diagram of an embodiment of a battery testing device provided in some embodiments;

[0059] Figure 8 is a schematic diagram of the structure of an embodiment of a testing device provided in some embodiments;

[0060] Fig. 9 It is a structural schematic diagram of an embodiment of a battery testing system provided by some embodiments. DETAILED DESCRIPTION

[0061] The scheme of the embodiment of the present application is described in detail below in conjunction with the drawings of the specification.

[0062] In the following description, for the purpose of explanation rather than limitation, specific details such as specific subsystem structures, interfaces, and technologies are provided to facilitate a thorough understanding of the present application.

[0063] The term "and / or" in this article is only a description of the association relationship of associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the objects associated before and after are in an "or" relationship. In addition, "many" in this article means two or more than two. In addition, the term "at least one" in this article means any combination of at least two of any one or more of a plurality of, for example, including at least one of A, B, and C, can mean including any one or more elements selected from the set consisting of A, B, and C.

[0064] Considering that some electrical devices may not have a voltage sampling system, in order to improve the monitoring of batteries in various scenarios, this solution proposes a battery with a voltage sampling system. The battery itself can sample the voltage at both ends, thereby reducing the requirements for electrical devices. In addition, in order to better control the voltage sampling system to detect the voltage at both ends of the battery, this solution also sets a controller on the battery, and controls the voltage sampling system to detect the voltage at both ends of the battery through the controller.

[0065] However, the current battery is not equipped with a voltage sampling system and a controller, so many battery testing methods only test the impedance or other performance of the battery. Obviously, these impedance tests or other performance tests cannot test whether the voltage sampling system is working properly or whether the controller is working properly. Therefore, this solution further proposes a battery testing method, by inputting an electrical signal of a preset waveform to the battery. If the test equipment can receive the preset response signal returned by the battery, it means that the voltage sampling system and the controller can work properly. If the test equipment cannot receive the preset response signal, it means that one or more of the voltage sampling system and the controller may have problems, which need to be checked later.

[0066] The electric device disclosed in the embodiment of the present application can be used for electric devices using the battery 100 as a power source or various energy storage systems using the battery 100 as an energy storage element. The electric device can be a mobile phone, a tablet, a laptop, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, etc. Among them, the electric toy can include a fixed or mobile electric toy, for example, a game console, an electric car toy, an electric ship toy, and an electric airplane toy, etc., and the spacecraft can include an airplane, a rocket, a space shuttle, and a spacecraft, etc.

[0067] For the convenience of description, the following embodiments are described by taking a vehicle 1000 as an example of an electrical device according to an embodiment of the present application.

[0068] Please refer to Figure 1The vehicle 1000 may be a fuel vehicle, a gas vehicle or a new energy vehicle. The new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery 100 is provided inside the vehicle 1000. The battery 100 may be provided at the bottom, head or tail of the vehicle 1000. The battery 100 may be used to power the vehicle 1000. For example, the battery 100 may be used as an operating power source for the vehicle 1000. The vehicle 1000 may also include a vehicle controller 200 and a motor 300. The vehicle controller 200 is used to control the battery 100 to power the motor 300, for example, to meet the power requirements for starting, navigating and driving the vehicle 1000.

[0069] In some embodiments of the present application, the battery 100 can not only serve as an operating power source for the vehicle 1000, but also serve as a driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0070] Please refer to Figure 2 The present application provides a battery 100. The battery 100 includes: a housing 110, a voltage sampling system 130 and a controller 140, wherein a positive electrode and a negative electrode are arranged on the housing; two detection terminals of the voltage sampling system are respectively connected to the positive electrode and the negative electrode, and are used to detect the voltage between the positive electrode and the negative electrode to obtain the voltage at both ends of the battery 100; the controller is connected to the output terminal of the voltage sampling system, and is used to generate a preset response signal in response to the change of the voltage at both ends of the battery 100 meeting the preset change condition.

[0071] Among them, the battery 100 provided in this solution can be a battery cell, or a battery 100 module or a battery 100 module including a battery cell and a box for accommodating the battery cell. This solution takes the battery 100 as a battery cell as an example. The battery cell can be a secondary battery 100 or a primary battery 100. It can also be a lithium-sulfur battery 100, a sodium-ion battery 100 or a magnesium-ion battery 100, but is not limited to this. The battery cell can be cylindrical, flat, rectangular or other shapes. The battery cell refers to the smallest unit that constitutes the battery 100. The voltage sampling system 130 can be connected to the positive and negative electrodes of the battery 100 respectively, and is used to sample the voltage at both ends of the battery 100. As long as the system can realize the sampling of the voltage at both ends of the battery 100, it is the voltage sampling system 130 provided by this solution, so this embodiment does not limit the specific structure of the voltage sampling system 130. The controller 140 can be any device or circuit with control function such as a microcontroller MCU, SOC or single-chip microcomputer, and the controller 140 and the above-mentioned vehicle controller 200 can be the same control or different controllers. In some embodiments, the controller 140 is also used to control the voltage sampling system 130 to sample the voltage across the battery 100 according to the sampling timing. In some embodiments, the battery 100 is a battery cell for example, and the voltage across the battery 100 can be the voltage between the positive electrode and the negative electrode. In other embodiments, the battery 100 includes multiple battery cells, and the voltage across the battery 100 can be the voltage across one of the battery cells or the voltage statistics across multiple battery cells. The voltage statistics can be the maximum value, average value, minimum value, etc. obtained by any statistical method. The present application takes the battery 100 as a battery cell as an example. The change in voltage that meets the preset change condition can be that the voltage reaches a certain set voltage value or reaches multiple set voltage values ​​continuously, or the difference between the voltages at different times meets the conditions, etc. The preset change conditions can be set according to the needs, and are not specifically limited here. If the controller can generate a preset response signal when the change in voltage across the battery 100 meets the preset change conditions, it means that the controller can work normally in the battery 100, that is, the battery 100 is qualified. If the controller cannot generate a preset response signal, either there is a problem with the battery cell itself, resulting in the voltage across the battery 100 failing to meet the preset change conditions, or there is a problem with the controller and it cannot work normally, or there is a problem with the sampling system of the battery 100. Regardless of which problem it is, the battery 100 is unqualified and requires subsequent maintenance and other work.

[0072] In the above scheme, by setting a voltage sampling system on the battery 100, and connecting the two detection terminals of the voltage sampling system to the positive electrode and the negative electrode of the battery 100 respectively, the voltage sampling system can sample the voltage at both ends of the battery 100. In addition, the controller is connected to the output terminal of the voltage sampling system, so that the controller can generate a preset response signal when the change of the voltage at both ends of the battery 100 meets the preset change condition. The preset response signal can be used to judge whether the battery 100 is qualified in the future. Compared with triggering the controller to generate a preset response signal by reaching a specific timer time, the triggering condition of this scheme is more flexible.

[0073] In some embodiments, please also refer to Figure 3 The battery 100 further includes a voltage divider circuit 160, which is disposed between the voltage sampling system 130 and the positive electrode and the negative electrode.

[0074] The voltage divider circuit 160 may be a resistor voltage divider circuit. The resistor voltage divider circuit may be composed of two resistors (not shown) connected in series, and the output voltage generated is only a fraction of its input voltage. The input voltage is applied to the two resistors, and the required output voltage comes from the connection between the two resistors, and the second resistor is usually connected to the ground.

[0075] In the above scheme, generally speaking, the voltage value that the voltage sampling system 130 can collect is less than 3V. This scheme can conveniently reduce a large voltage to a small voltage by setting a voltage divider circuit between the voltage sampling system 130 and the positive electrode and the negative electrode, so that the voltage sampling system 130 can sample a larger voltage.

[0076] In some embodiments, the battery 100 further includes a communication system 120 , the communication system 120 is connected to the controller, and the controller 140 is used to control the communication system 120 to send data.

[0077] The communication system 120 can be any system with communication function such as a carrier communication system 120, an infrared communication system 120, etc. The communication system 120 can send and receive data. In some embodiments, the controller 140 is connected to the communication system 120 and the voltage sampling system 130 respectively.

[0078] In the above solution, by providing a communication system on the battery 100 , the battery 100 can communicate with an external device or load.

[0079] In some embodiments, the housing includes a shell 112 with an opening and an end cap 111 , the positive electrode and the negative electrode are arranged on a side of the end cap 111 away from the shell 112 , and the controller 140 and the voltage sampling system 130 are connected to the end cap 111 .

[0080] The end cap 111 can be covered at the opening of the housing 112. The connection with the end cap 111 can be set on the side of the end cap 111 facing the housing 112, or on the side of the end cap 111 away from the housing 112. Optionally, the communication system, the controller and the voltage sampling system are connected to the end cap. The communication system 120, the voltage sampling system 130 and the controller 140 can be set on the same side of the end cap 111, or on different sides of the end cap 111.

[0081] In the above solution, by connecting the communication system 120, the voltage sampling system 130 and the controller 140 to the end cover 111 respectively, the communication system 120, the voltage sampling system 130 and the controller 140 can be conveniently removed from the battery 100 for daily maintenance or repair operations.

[0082] In some embodiments, the controller 140 and the voltage sampling system 130 are disposed on a side of the end cover facing the housing.

[0083] The controller 140 and the voltage sampling system 130 can be fixed on the side of the end cover 111 facing the housing 112 by a fixing member (not shown). Optionally, the communication system 120, the controller 140, and the voltage sampling system 130 are arranged on the side of the end cover 111 facing the housing 112. The communication system 120 can be a carrier communication system. The communication system 120 is respectively connected to the positive and negative electrodes of the battery 100. Specifically, the communication system 120 is respectively connected to the positive electrode column and the negative electrode column of the battery 100. After the positive and negative electrodes of the battery 100 are connected to the external device, the external device, the positive electrode, the communication system 120 and the negative electrode form a communication loop, which is convenient for sending data to the external device or receiving data sent by the external device.

[0084] In the above scheme, in the above scheme, by setting the voltage sampling system on the side of the end cap facing the shell, that is, setting it inside the battery 100, it is more convenient to carry and can reduce the interference of external factors during the voltage sampling process, thereby improving the accuracy of the sampled voltage data. In addition, the controller is also set on the side of the end cap facing the shell to facilitate the interaction between the controller and the voltage sampling system.

[0085] In some embodiments, please also refer to Figure 4 The controller 140 includes a threshold circuit 141 and a signal generator 142. One end of the threshold circuit 141 is connected to the output end of the voltage sampling system, and the other end is connected to the signal generator 142. The signal generator 142 is used to generate a preset response signal when receiving a signal output by the threshold circuit 141.

[0086] The threshold circuit 141 can be understood as a circuit that compares with one or more threshold voltages, and the reference voltage for comparison is called the threshold voltage. For example, if the voltage collected by the voltage sampling circuit is 3V and the reference voltage is also 3V, the threshold circuit 141 can generate a corresponding output signal, which facilitates the signal generator 142 to generate a preset response signal after receiving the signal output by the threshold circuit 141.

[0087] In the above solution, by setting a threshold circuit 141 in the control, it is convenient to detect whether the voltage output by the voltage sampling system reaches a preset value.

[0088] In some embodiments, there are at least two threshold circuits 141, one end of each threshold circuit 141 is connected to the output end of the voltage sampling system, and the other end is connected to the signal generator 142. The signal generator 142 is used to generate a preset response signal when the signals output by all threshold circuits 141 are received in sequence.

[0089] Each threshold circuit 141 is independently configured, and the input end of each threshold circuit 141 is connected to the output end of the voltage sampling system, and the output end is connected to the signal generator 142. Sequential reception can be understood as first receiving the signal output by the first threshold circuit 141, and then receiving the signal output by the second threshold circuit 141.

[0090] In the above solution, by setting two threshold circuits 141, the condition of the preset response signal generated by the signal generator 142 can be made more stringent, and the subsequent detection of whether the battery 100 is qualified by using the preset response signal is more accurate.

[0091] In some embodiments, the controller 140 and the voltage sampling system 130 are integrated on a chip 150 .

[0092] Exemplarily, the chip 150 may be a LH100 or other type of chip 150, and the type of the chip 150 is not specifically limited herein. The power interface of the chip 150 is respectively connected to the positive electrode and the negative electrode of the battery 100, so that the battery 100 supplies power to the chip 150. The chip may be fixed to the side of the end cap facing the housing by a fixing member or other means.

[0093] In the above solution, by integrating the voltage sampling system 130 and the controller 140 on a chip 150 , the space occupied by the discrete chips can be reduced, thereby achieving the effect of relatively reducing the volume of the battery 100 .

[0094] See also Figure 5aThe battery method provided in the present application is applied to a testing device, and the testing device is connected to the above-mentioned battery. The battery testing method includes the contents of the following steps S11 to S13. Step S11: The testing device inputs an electrical signal of a preset waveform to the battery. Step S12: Determine whether a preset response signal output by the battery is received. Among them, the preset response signal is issued when the battery detects that the change in the voltage at both ends of the battery meets the preset change condition. Step S13: In response to receiving the preset response signal output by the battery, determine that the battery is qualified.

[0095] The test equipment is any device that can input an electrical signal to the battery, and the electrical signal can be a voltage signal or a current signal. The preset waveform can be a sine waveform, a cosine waveform or other arbitrary waveform, and the waveform of the electrical signal is not specifically limited here. The preset response signal can be a signal with a specific waveform, for example, a high-level signal, a low-level signal, or a signal that changes periodically, etc., and the waveform of the preset response signal is not specifically limited here. The change in voltage that meets the preset change condition can be that the voltage reaches a certain set voltage value or reaches multiple set voltage values ​​continuously, or the difference between the voltages at different times meets the conditions, etc. The preset change conditions can be set according to needs and are not specifically limited here. Among them, the preset response signal can be generated by the controller in the battery. If the battery can send a preset response signal to the test equipment when the change in voltage at both ends of the battery meets the preset change conditions, it means that the battery can work normally inside the battery, that is, the battery is qualified. If the battery cannot send a preset response signal to the test equipment, either there is a problem with the battery cell itself, resulting in the voltage at both ends of the battery failing to meet the preset change conditions, or there is a problem with the voltage sampling or controller in the battery, and it cannot work normally. Regardless of the problem, the battery is unqualified and requires subsequent maintenance and other work.

[0096] In the above scheme, the test equipment inputs an electrical signal of a preset waveform to the battery, and then detects the voltage change at both ends of the battery through the battery. If the battery is qualified, the battery will output a preset response signal after detecting that the voltage change at both ends of the battery meets the preset change conditions. Therefore, after the test equipment receives the preset response signal, it can be determined that the battery is qualified. This scheme simplifies the triggering conditions for the battery to output the preset response signal, making the battery test more convenient.

[0097] See also Figure 5b In some embodiments, the above step S12 may include the following steps: Step S121: Determine whether the waveform of the received response signal is the target waveform. Step S122: In response to the waveform of the received response signal being the target waveform, determine that a preset response signal is received.

[0098] The target waveform may be a continuous high level, a continuous low level, or a waveform that changes periodically, etc., and the target waveform is not specifically limited here. For example, if the target waveform is a continuous high level, but the waveform of the received response signal is a sine wave, then it is determined that the received response signal is not a preset response signal, and it is further determined that the preset response signal is not received. Similarly, if the waveform of the received response signal is a continuous high level, it can be determined that the preset response signal is received.

[0099] In the above scheme, by judging whether the waveform of the received response signal is the target waveform, it is possible to judge whether the battery has an abnormality. For example, if the waveform of the response signal is inconsistent with the preset target waveform, it is likely that the controller, voltage sampling system or other modules in the battery have an abnormality, resulting in the inability to perform the corresponding function normally.

[0100] In some embodiments, the above step S122 may include the following steps: in response to the waveform of the response signal being the target waveform, determining whether the duration of the response signal is a preset duration, and in response to the duration of the response signal being the preset duration, determining that a preset response signal is received.

[0101] The preset duration can be considered as the response time of the battery. If the response time is not specified, it is likely to cause the battery response time to be longer, which may cause delays in the implementation of various functions of the battery during subsequent use. Therefore, by further measuring the duration of the response signal, it is possible to determine whether the battery can respond normally. For example, if the preset duration is 2 seconds, but the duration of the response signal is 1 second or 3 seconds, it is determined that the duration of the response signal is not the preset duration, and it is determined that the preset response signal is not received. In other embodiments, the preset duration can be a time interval. As long as the duration of the response signal is within the time interval, the duration of the response signal is determined to be the preset duration.

[0102] In the above scheme, if the duration of the response signal cannot reach the preset duration or continues after reaching the preset duration, it is likely that there is an abnormality in the function of the voltage sampling system or controller or other modules in the battery. If the batteries in the battery are not checked, various problems may arise during the subsequent use of the battery.

[0103] In some embodiments, the method further includes: receiving an adjustment instruction for the preset duration, and adjusting the preset duration stored in the test device based on the adjustment instruction.

[0104] It is understandable that the preset duration can be adjusted to increase or decrease the preset duration according to actual needs. For example, an adjustment button can be set on the test device, and when it is detected that the user rotates the adjustment button, it is determined that an adjustment instruction for the preset duration is received, and the preset duration is adjusted according to the rotation direction and rotation angle, and the adjusted preset duration can also be displayed on the display interface of the test device.

[0105] In the above solution, by dynamically adjusting the duration, the battery testing process can be made more flexible.

[0106] In some embodiments, the response signal includes a first response signal and a second response signal, the target waveform includes a first target waveform and a second target waveform, and the first response signal and the second response signal are received at different times. The above step S122 may include the following steps: in response to the waveform of the first response signal being the first target waveform and the waveform of the second response signal being the second target waveform, determining that a preset response signal is received.

[0107] Exemplarily, the first response signal may be issued when the battery detects that the change in the voltage at both ends of the battery satisfies the first preset change condition, and the second response signal may be issued when the battery detects that the change in the voltage at both ends of the battery satisfies the second preset change condition. Among them, the first preset change condition and the second preset change condition may be different, and the specific preset change condition may be set according to demand, which is not specifically limited here. The first target waveform and the second target waveform may be the same or different. Exemplarily, the first target waveform may be a continuous high level, and the second target waveform may be a sine waveform. In another embodiment, both the first target waveform and the second target waveform may be a continuous high level. If the waveform of one of the response signals is inconsistent with the corresponding target waveform, it is determined that the preset response signal has not been received.

[0108] As described above, in response to the waveform of the first response signal being the first target waveform and the waveform of the second response signal being the second target waveform, it is also possible to judge from the duration of the response signal, the first response signal corresponds to the first preset duration, the second response signal corresponds to the second preset duration, and when the waveform of the first response signal is the first target waveform and the waveform of the second response signal is the second target waveform, it is further possible to determine whether the preset response signal is received by the duration of the first response signal and the second response signal. For example, if the duration of one of the response signals is inconsistent with the corresponding preset duration, it is determined that the preset response signal is not received, and only when the duration of both response signals is consistent with the corresponding preset duration, it is determined that the preset response signal is received.

[0109] In other embodiments, the response signal may be received periodically, and if the waveform and duration of the response signal received in each period meet corresponding conditions and the number of periods reaches a preset number of periods, it is determined that the preset response signal is received.

[0110] In some other embodiments, in response to the waveform of the first response signal being the first target waveform and the waveform of the second response signal being the second target waveform, it can also be determined whether the preset response signal is received based on whether the interval between the first response signal and the second response signal is the preset interval. The preset interval can be determined based on the electrical signal input to the battery by the test device. For example, if the electrical signal is a sinusoidal signal, it can be determined based on the waveform of the sinusoidal signal when the voltage across the battery can meet the preset change condition, thereby determining the preset interval between the first response signal and the second response signal.

[0111] In the above solution, by using multiple response signals to determine whether a battery is qualified, the test result can be made more accurate.

[0112] In some embodiments, the method further includes: determining that the battery is unqualified in response to not receiving a preset response signal output by the battery.

[0113] If the battery fails to meet the requirements, the reasons for the failure can be further determined, so as to formulate targeted maintenance strategies or improvement strategies.

[0114] In the above scheme, if an abnormality occurs in the battery or other modules in the battery, the battery will be unable to detect the voltage change at both ends of the battery, or the preset response signal cannot be generated or transmitted after the voltage change at both ends of the battery is detected, the test equipment will be unable to receive the preset response signal. In this way, the faulty battery can be identified, which facilitates the subsequent maintenance of the battery.

[0115] See also Figure 6a The present application provides a battery testing method, which is applied to the above-mentioned battery. The battery is connected to a testing device, and the testing device is used to input an electrical signal of a preset waveform to the battery. The battery testing method includes the following steps S21 to S23: Step S21: Determine whether the voltage change at both ends of the battery meets the preset change condition. Step S22: In response to the voltage change at both ends of the battery meeting the preset change condition, generate a preset response signal. Step S23: Send the preset response signal to the testing device so that the testing device determines that the battery is qualified based on the preset response signal.

[0116] The test equipment is any device that can input an electrical signal to the battery, and the electrical signal can be a voltage signal or a current signal. As mentioned above, the battery can be a battery cell or a battery module composed of multiple battery cells, or in other embodiments, the battery includes a box and a battery cell, and the battery cell is contained in the box. In some embodiments, the battery is a battery cell as an example, the battery can be arranged inside the battery cell, the two ends of the battery can be the positive and negative electrodes of a single battery cell, and the voltage at both ends of the battery can be the voltage between the positive and negative electrodes. In other embodiments, the battery includes multiple battery cells, the battery can be connected to multiple battery cells, the two ends of the battery can be the voltage at both ends of one of the battery cells or the voltage statistics at both ends of multiple battery cells, and the voltage statistics can be the maximum value, average value, minimum value, etc. obtained by any statistical method. The change in voltage that meets the preset change condition can be that the voltage reaches a certain set voltage value or reaches multiple set voltage values ​​continuously, or the difference between the voltages at different times meets the conditions, etc. The preset change conditions can be set according to the needs, and are not specifically limited here. The preset response signal may be a signal with a specific waveform, for example, a high-level signal, a low-level signal, or a signal that changes periodically, etc. The waveform of the preset response signal is not specifically limited here.

[0117] In the above scheme, the test equipment inputs an electrical signal of a preset waveform to the battery, and then detects the voltage change at both ends of the battery through the battery. If the battery is qualified, the battery in the battery will output a preset response signal after detecting that the voltage change at both ends of the battery meets the preset change conditions. Therefore, after the test equipment receives the preset response signal, it can be determined that the battery is qualified. This scheme simplifies the triggering conditions for the battery to output the preset response signal, making the battery test more convenient.

[0118] In some embodiments, determining whether a voltage change across a battery satisfies a preset change condition includes: determining whether the voltage across the battery reaches a first voltage value and a second voltage value in sequence; and determining that the voltage change across the battery satisfies a preset change condition in response to the voltage across the battery reaching the first voltage value and the second voltage value in sequence.

[0119] Reaching the first voltage value and the second voltage value in sequence may specifically mean reaching the first voltage value first and then reaching the second voltage value, or reaching the second voltage value first and then reaching the first voltage value. The first voltage value and the second voltage value are different, for example, the first voltage value may be less than the second voltage value, reaching the first voltage value first and then reaching the second voltage value may be understood as the voltage at both ends of the battery being in an increasing state, while reaching the second voltage value first and then reaching the first voltage value may be understood as the voltage at both ends of the battery being in a decreasing state. For details, please refer to Figure 6b and Figure 6c , schematic diagram of the voltage change at both ends of the battery, Figure 6band Figure 6c The voltage across the battery has a climbing stage and may also have a falling stage. The voltage across the battery can change with the electrical signal input by the test equipment. In the voltage climbing stage, the first voltage value can be a trigger low voltage, and the second voltage value can be a trigger high voltage, that is, the first voltage value is lower than the second voltage value. In the voltage falling stage, the first voltage value can be a trigger high voltage, and the second voltage value can be a trigger low voltage. The specific values ​​of the first voltage value and the second voltage value can be set according to demand and are not specifically limited here.

[0120] In the above scheme, by using two voltage thresholds to trigger the battery to generate a preset response signal, compared with using a single threshold to trigger the battery to generate a preset response signal, this scheme can reduce the possibility of erroneously triggering the battery to generate a preset response signal, making the battery test result more accurate.

[0121] In some embodiments, the response signal includes a first response signal and a second response signal, and the first response signal and the second response signal respectively correspond to preset change conditions, so that the test device determines that the battery is qualified based on the first response signal and the second response signal.

[0122] Among them, the preset change condition corresponding to the first response signal may be different from the preset change condition corresponding to the second response signal. For example, the preset change condition corresponding to the first response signal may be to reach the first voltage value first and then the second voltage value, and the preset change condition corresponding to the second response signal may be to reach the second voltage value first and then the first voltage value. Of course, in other embodiments, the preset change condition corresponding to the second response signal may also be to reach the third voltage value first and then the fourth voltage value, the third voltage value is different from the first voltage value, and the fourth voltage value is different from the second voltage value. After the first response signal is generated, there is no need to wait for the second response signal to be generated and then sent to the test device. The first response signal can be sent directly to the test device after the first response signal is generated. For the specific way in which the test device determines that the battery is qualified based on the first response signal and the second response signal, please refer to the above-mentioned battery method embodiment applied to the test device, which will not be repeated here.

[0123] In other embodiments, because the electrical signal may be a periodic signal, the battery may periodically generate the first response signal and the second response signal.

[0124] In the above scheme, by setting the first response signal and the second response signal, the first response signal and the second response signal respectively correspond to preset change conditions, that is, two conditions for triggering the battery to generate a response signal are set. By using multiple response signals to determine whether the battery is qualified, the test result can be made more accurate.

[0125] In some embodiments, the duration of the preset response signal is a preset duration.

[0126] The preset duration can be considered as the response time of the battery. If the response time is not specified, the battery response time may be longer, which may cause delays in the implementation of various functions of the battery during subsequent use. Therefore, by further measuring the duration of the response signal, it is possible to determine whether the battery can respond normally.

[0127] In the above scheme, if the duration of the response signal cannot reach the preset duration or continues after reaching the preset duration, it is likely that there is an abnormality in the function of the battery or other modules in the battery. If the batteries in the battery are not checked, various problems may arise during the subsequent use of the battery.

[0128] In some embodiments, the battery testing method further includes: receiving an adjustment instruction for one or more of a preset duration, a first voltage value, and a second voltage value; and adjusting one or more of the preset duration, the first voltage value, and the second voltage value in response to the adjustment instruction.

[0129] It is understandable that the preset duration can be adjusted to increase or decrease the preset duration according to actual needs. The adjustment of the first voltage value and the second voltage value can be increased or decreased. Specifically, the adjustment instruction can be sent to the battery by a test device or other device connected to the battery. The preset duration, the first voltage value, and the second voltage value can all be written into the memory of the battery through dynamic configuration.

[0130] In the above solution, by dynamically adjusting one or more of the preset duration, the first voltage value, and the second voltage value, the battery testing process can be made more flexible.

[0131] For a better understanding of this solution, please refer to Figure 6b and Figure 6c The first voltage value and the second voltage value are two voltages that the battery triggers to generate a preset response signal, which are a trigger low voltage and a trigger high voltage, respectively. Figure 6b After the voltages at both ends of the battery reach the first voltage and the second voltage successively, a high-level signal (first response signal) of a preset duration is generated. That is, based on the voltage climbing characteristic at the beginning of charging, when the power supply input voltage exceeds the first voltage and the second voltage value successively, the corresponding pin of the battery starts to output a preset waveform or level and lasts for a preset time. Figure 6cAfter the voltages at both ends of the battery reach the second voltage value and the first voltage value successively, a high-level signal (second response signal) of a preset duration is generated. The first response signal can be used alone to determine whether the battery is qualified, or the second response signal can be used alone to determine whether the battery is qualified, or the first response signal and the second response signal can be combined to determine whether the battery is qualified, or the first response signal and the second response signal generated periodically can be combined to determine whether the battery is qualified. In addition, in addition to determining whether the battery is qualified according to the preset response signal, a control instruction can also be sent to the battery, and the battery outputs a corresponding output signal in response to the control instruction, so that the test equipment can combine the output signal to comprehensively determine whether the battery is qualified.

[0132] See also Figure 7 The present application provides a battery testing device 40, which is arranged in a testing device, and the testing device is connected to the above-mentioned battery. The battery testing device 40 includes: an output module 41, a signal receiving module 42 and a processing module 43; the output module 41 is used to input an electrical signal of a preset waveform to the battery; the signal receiving module 42 is used to determine whether a preset response signal output by the battery is received, and the preset response signal is issued when the battery detects that the change in the voltage at both ends of the battery meets the preset conditions; the processing module 43 is used to determine that the battery is qualified in response to receiving the preset response signal output by the battery.

[0133] In the above scheme, the test equipment inputs an electrical signal of a preset waveform to the battery, and then detects the voltage change at both ends of the battery through the battery. If the battery is qualified, the battery will output a preset response signal after detecting that the voltage change at both ends of the battery meets the preset change conditions. Therefore, after the test equipment receives the preset response signal, it can be determined that the battery is qualified. This scheme simplifies the triggering conditions for the battery to output the preset response signal, making the battery test more convenient.

[0134] In some embodiments, the signal receiving module 42 determines whether a preset response signal output by the battery is received, including: determining whether the waveform of the received response signal is a target waveform; in response to the waveform of the received response signal being the target waveform, determining that the preset response signal is received.

[0135] In the above scheme, by judging whether the waveform of the received response signal is the target waveform, it is possible to judge whether the battery has an abnormality. For example, if the waveform of the response signal is inconsistent with the preset target waveform, it is likely that the voltage sampling system, controller or other modules in the battery have an abnormality, resulting in the inability to perform the corresponding function normally.

[0136] In some embodiments, the signal receiving module 42 determines that a preset response signal is received in response to the waveform of the received response signal being a target waveform, including: in response to the waveform of the response signal being the target waveform, determining whether the duration of the response signal is a preset duration; in response to the duration of the response signal being the preset duration, determining that a preset response signal is received.

[0137] In the above scheme, if the duration of the response signal cannot reach the preset duration or continues after reaching the preset duration, it is likely that there is an abnormality in the voltage sampling system, the function of the controller or other modules in the battery. If the battery is not checked, various problems may arise during the subsequent use of the battery.

[0138] In some embodiments, the battery testing device setting 40 further includes a parameter adjustment module (not shown), which is used to: receive an adjustment instruction for a preset duration; and adjust the preset duration stored in the testing device based on the adjustment instruction.

[0139] In the above solution, by dynamically adjusting the duration, the battery testing process can be made more flexible.

[0140] In some embodiments, the response signal includes a first response signal and a second response signal, the target waveform includes a first target waveform and a second target waveform, the first response signal and the second response signal are received at different times, and in response to the waveform of the received response signal being the target waveform, it is determined that a preset response signal is received, including: in response to the waveform of the first response signal being the first target waveform and the waveform of the second response signal being the second target waveform, it is determined that a preset response signal is received.

[0141] In the above solution, by using multiple response signals to determine whether a battery is qualified, the test result can be made more accurate.

[0142] In some embodiments, the processing module 43 is further configured to: determine that the battery is unqualified in response to not receiving a preset response signal output by the battery.

[0143] In the above scheme, if the voltage sampling system, controller or other modules in the battery are abnormal, the battery will be unable to detect the voltage changes at both ends of the battery, or the preset response signal cannot be generated or transmitted after the voltage changes at both ends of the battery are detected. This will make the test equipment unable to receive the preset response signal. In this way, the faulty battery can be detected, which is convenient for subsequent maintenance of the battery.

[0144] See also Figure 8The present application provides a testing device 50, which includes the above-mentioned testing device including a memory 51 and a processor 52, and the processor 52 is used to execute program instructions stored in the memory 51 to implement the battery testing method described in the above-mentioned battery testing method embodiment applied to the testing device.

[0145] In a specific implementation scenario, the test device 50 may include, but is not limited to: computer equipment, electrical equipment, microcomputers, desktop computers, servers, and in addition, the test device 50 may also include mobile devices such as laptops and tablet computers, which are not limited here.

[0146] Specifically, the processor 52 is used to control itself and the memory 51 to implement the steps in any of the above-mentioned battery testing method embodiments. The processor 52 can also be called a CPU (Central Processing Unit). The processor 52 may be an integrated circuit chip with signal processing capabilities. The processor 52 can also be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), a field-programmable gate array (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor, etc. In addition, the processor 52 can be implemented by an integrated circuit chip.

[0147] In the above scheme, the test device 50 inputs an electrical signal of a preset waveform to the battery, and then detects the voltage change at both ends of the battery through the battery. If the battery is qualified, the battery will output a preset response signal after detecting that the voltage change at both ends of the battery meets the preset change conditions. Therefore, after the test device 50 receives the preset response signal, it can be determined that the battery is qualified. This scheme simplifies the triggering conditions for the battery to output the preset response signal, making the battery test more convenient.

[0148] See also Fig. 9 The present application provides a battery testing system 1, which includes the above-mentioned testing device 50 and the above-mentioned battery 100, and the testing device 50 is connected to the battery 100 so that the testing device can test the battery 100.

[0149] In the above scheme, an electrical signal of a preset waveform is input to the battery 100 through the test device 50, and then the voltage change at both ends of the battery 100 is detected through the battery 100. If the battery 100 is qualified, the battery 100 will output a preset response signal after detecting that the change in the voltage at both ends of the battery 100 meets the preset change condition. Therefore, after the test device 50 receives the preset response signal, it can be determined that the battery 100 is qualified. This scheme simplifies the triggering conditions for the battery 100 to output the preset response signal, making the test of the battery 100 more convenient.

[0150] In some embodiments, the functions or modules included in the device provided by the embodiments of the present disclosure can be used to execute the method described in the above method embodiments. The specific implementation can refer to the description of the above method embodiments, and for the sake of brevity, it will not be repeated here.

[0151] The above description of various embodiments tends to emphasize the differences between the various embodiments. The same or similar aspects can be referenced to each other, and for the sake of brevity, they will not be repeated herein.

[0152] In the several embodiments provided in the present application, it should be understood that the disclosed methods and devices can be implemented in other ways. For example, the device implementation described above is only schematic. For example, the division of modules or units is only a logical function division. There may be other division methods in actual implementation, such as units or components can be combined or integrated into another subsystem, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, and the indirect coupling or communication connection of devices or units can be electrical, mechanical or other forms.

[0153] In addition, each functional unit in each embodiment of the present application can be integrated into a processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of a software functional unit. If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including several instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor (processor) to perform all or part of the steps of each implementation method of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk and other media that can store program code.

Claims

1. A battery, characterized in that: The battery comprises: A housing, wherein a positive electrode and a negative electrode are disposed on the housing; A voltage sampling system, wherein two detection terminals of the voltage sampling system are respectively connected to the positive electrode and the negative electrode, and are used to detect the voltage between the positive electrode and the negative electrode to obtain the voltage at both ends of the battery; A controller is connected to the output end of the voltage sampling system and is used to generate a preset response signal in response to the change of the voltage at both ends of the battery meeting a preset change condition.

2. The battery according to claim 1, characterized in that The battery further comprises a voltage divider circuit, which is arranged between the voltage sampling system and the positive electrode and the negative electrode.

3. The battery according to claim 2, characterized in that The battery further includes a communication system, wherein the communication system is connected to the controller, and the controller is used to control the communication system to send data.

4. The battery according to any one of claims 1 to 3, characterized in that The housing comprises a shell with an opening and an end cover, the positive electrode and the negative electrode are arranged on a side of the end cover away from the shell, and the controller and the voltage sampling system are connected to the end cover.

5. The battery according to claim 4, characterized in that The controller and the voltage sampling system are arranged on a side of the end cover facing the housing.

6. The battery according to claim 1, characterized in that The controller includes a threshold circuit and a signal generator. One end of the threshold circuit is connected to the output end of the voltage sampling system, and the other end is connected to the signal generator. The signal generator is used to generate the preset response signal when receiving the signal output by the threshold circuit.

7. The battery according to claim 6, characterized in that There are at least two threshold circuits, one end of each threshold circuit is connected to the output end of the voltage sampling system, and the other end is connected to the signal generator, and the signal generator is used to generate the preset response signal when the signals output by all threshold circuits are received in sequence.

8. The battery according to any one of claims 1 to 7, characterized in that The controller and the voltage sampling system are integrated on a chip.

9. A battery testing method, characterized in that: The battery testing method is applied to a testing device, the testing device is connected to the battery according to any one of claims 1 to 8, and the battery testing method comprises: The testing device inputs an electrical signal of a preset waveform to the battery; Determining whether a preset response signal output by the battery is received, wherein the preset response signal is sent by the battery when the battery detects that a change in the voltage across the battery satisfies a preset change condition; In response to receiving a preset response signal output by the battery, it is determined that the battery is qualified.

10. The method according to claim 9, characterized in that The determining whether a preset response signal output by the battery is received includes: Determine whether the waveform of the received response signal is the target waveform; In response to the waveform of the received response signal being the target waveform, it is determined that the preset response signal is received.

11. The method according to claim 10, characterized in that The step of determining that the preset response signal is received in response to the waveform of the received response signal being a target waveform comprises: In response to the waveform of the response signal being a target waveform, determining whether the duration of the response signal is a preset duration; In response to the duration of the response signal being the preset duration, it is determined that the preset response signal is received.

12. The method according to claim 11, characterized in that The method further comprises: receiving an adjustment instruction for the preset duration; Based on the adjustment instruction, the preset duration stored in the test device is adjusted.

13. The method according to claim 10, characterized in that The response signal includes a first response signal and a second response signal, the target waveform includes a first target waveform and a second target waveform, the first response signal and the second response signal are received at different times, the waveform in response to the received response signal is the target waveform, and determining that the preset response signal is received includes: In response to the waveform of the first response signal being the first target waveform and the waveform of the second response signal being the second target waveform, it is determined that the preset response signal is received.

14. The method according to any one of claims 9 to 13, characterized in that The method further comprises: In response to not receiving a preset response signal output by the battery, the battery is determined to be unqualified.

15. A battery testing method, characterized in that: The battery testing method is applied to the battery according to any one of claims 1 to 8, the battery is connected to a testing device, the testing device is used to input an electrical signal of a preset waveform to the battery, and the battery testing method comprises: Determining whether a voltage change at both ends of the battery satisfies a preset change condition; In response to a voltage change at both ends of the battery satisfying a preset change condition, generating a preset response signal; The preset response signal is sent to a test device so that the test device determines that the battery is qualified based on the preset response signal.

16. The method according to claim 15, characterized in that The determining whether the voltage change at both ends of the battery satisfies a preset change condition includes: Determining whether the voltages at both ends of the battery reach a first voltage value and a second voltage value in sequence; In response to the voltage across the battery reaching the first voltage value and the second voltage value in sequence, it is determined that a change in the voltage across the battery satisfies a preset change condition.

17. The method according to claim 15, characterized in that The response signal includes a first response signal and a second response signal, and the first response signal and the second response signal respectively correspond to preset change conditions, so that the test device determines that the battery is qualified based on the first response signal and the second response signal.

18. The method according to claim 15 or 16, characterized in that The duration of the preset response signal is a preset duration.

19. The method according to claim 18, characterized in that The method further comprises: receiving an adjustment instruction for one or more of the preset duration, the first voltage value, and the second voltage value; In response to the adjustment instruction, one or more of the duration, the first voltage value, and the second voltage value are adjusted.

20. A battery testing device, characterized in that: The battery testing device is arranged in a testing device, the testing device is connected to a battery as claimed in any one of claims 1 to 8, and the battery testing device comprises: An output module, used for inputting an electrical signal of a preset waveform to the battery; A signal receiving module, used to determine whether a preset response signal output by the battery is received, wherein the preset response signal is sent when the battery detects that a change in the voltage at both ends of the battery meets a preset condition; The processing module is used to determine whether the battery is qualified in response to receiving a preset response signal output by the battery.

21. A testing device, characterized in that: The testing device comprises a memory and a processor, wherein the processor is configured to execute program instructions stored in the memory to implement the method according to any one of claims 9 to 14.

22. A battery testing system, characterized in that: The invention comprises the testing device according to claim 21 and the battery according to any one of claims 1 to 8, wherein the testing device is connected to the battery so that the testing device tests the battery.

23. An electrical device, characterized in that: The electrical device comprises a battery as described in any one of claims 1 to 8.

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