Calibration tool for battery test system

Abstract

The utility model relates to the technical field of battery testing, and particularly discloses a battery testing system calibration tool which comprises a shell and a first switch. A positive wire and a negative wire are arranged in the shell, and a Hall current sensor, a voltage sensor and an input / output port are connected in series between the positive wire and the negative wire; the number of the first switches is multiple, the multiple first switches are installed on the shell in a matrix mode, the multiple first switches are connected into the positive electrode wire and the negative electrode wire in parallel, and each first switch is electrically connected with a first positive electrode port and a first negative electrode port. The first positive electrode port is configured to be conducted with the positive electrode wire when the first switch is rotated to an open state, and the first negative electrode port is configured to be conducted with the negative electrode wire when the first switch is rotated to an open state. According to the utility model, the calibration efficiency can be greatly improved, human participation is reduced, the detection result error is small, and the reliability of the test result can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery testing, in particular to a calibration tool for a battery testing system. Background Art

[0002] The battery testing system is mainly used for detecting the characteristics of the battery such as voltage, current, capacity, temperature, cycle life, etc. during the charging and discharging processes of the battery, as well as activating, maintaining and repairing the battery. The working principle of the battery testing system is to set the current value or voltage value, capacity or time, termination voltage and cycle times of charging or discharging, and set protection parameters for capacity, voltage, temperature, etc., and the test will automatically stop when the set value is reached. Such a battery testing system can be expanded with multiple modules; each module has its own power supply and a complete control circuit, and a single module can work independently. Multiple modules can be connected in series through the built-in serial port to form a (current, voltage) measurement system for use.

[0003] During the test, the battery to be tested needs to be placed in the channel of the corresponding module, and the positive and negative electrodes of the battery to be tested are respectively abutted against the positive and negative electrode columns at both ends of the channel, and the device can be started to perform the charging or discharging test on the battery to be tested. To ensure the accuracy of the test, the positive and negative electrode columns at both ends of each channel should be calibrated before the test. However, the existing calibration is basically carried out manually by using a multimeter to monitor and calibrate the positive and negative electrode columns one by one, with low calibration efficiency; and manual calibration is prone to large errors, it is difficult to ensure the calibration accuracy, and the reliability of the test results cannot be improved. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is: how to solve the problems of low calibration efficiency and large errors existing in the prior art.

[0005] To solve the above technical problem, the utility model provides a calibration tool for a battery testing system, including:

[0006] A housing, in which a positive wire and a negative wire are provided;

[0007] A Hall current sensor, which is connected in series to the positive wire and the negative wire and is used for measuring the current between the positive wire and the negative wire;

[0008] A voltage sensor, which is connected in series to the positive wire and the negative wire and is used for measuring the voltage between the positive wire and the negative wire;

[0009] An input / output port, which is connected in series between the positive wire and the negative wire; and

[0010] Multiple first switches installed on the housing, the first switches are connected to the positive wire and the negative wire, and the multiple first switches are arranged in parallel with each other. Each first switch is electrically connected to a first positive terminal port and a first negative terminal port. The first positive terminal port is configured to conduct with the positive wire when the first switch is in the open state, and the first negative terminal port is configured to conduct with the negative wire when the first switch is in the open state.

[0011] Further preferably, it further includes:

[0012] A battery emulator, with a positive contact and a negative contact respectively provided at both ends of the battery emulator. The positive contact is electrically connected to the first positive terminal port, and the negative contact is electrically connected to the first negative terminal port.

[0013] Further preferably, it further includes:

[0014] A light-emitting diode, which is provided inside the first switch. The first switch is made of a light-transmitting material, and the light-emitting diode is configured to light up when the first switch is in the open state.

[0015] Further preferably, it further includes:

[0016] A power supply box, which is connected to the housing. An internal power supply is provided inside the power supply box, and the internal power supply is used to supply power to the light-emitting diode.

[0017] Further preferably, the internal power supply is provided with a first positive lead and a first negative lead, and the light-emitting diode is configured to conduct with the first positive lead and the first negative lead when the first switch is in the open state.

[0018] Further preferably, the input / output port is installed on the outer side of the housing. The input / output port includes a second positive terminal port and a second negative terminal port. Multiple first positive terminal ports are connected in parallel to the positive wire, and then the positive wire is connected to the second positive terminal port. Multiple first negative terminal ports are connected in parallel to the negative wire, and then the negative wire is connected to the second negative terminal port.

[0019] Further preferably, both the Hall current sensor and the voltage sensor are embedded on the surface of the housing.

[0020] Further preferably, multiple first switches are installed in a matrix on the housing.

[0021] Further preferably, it further includes:

[0022] A second positive lead, which is connected to the positive pole of the internal power supply;

[0023] A second negative lead wire, which is connected to the negative pole of the built-in power supply. The Hall current sensor and the voltage sensor are connected in parallel to the second positive lead wire and the second negative lead wire, and the built-in power supply is used to supply power to the Hall current sensor and the voltage sensor; and

[0024] A second switch, which is connected in series to the second positive lead wire and the second negative lead wire.

[0025] Further preferably, the Hall current sensor is a through-hole current sensor.

[0026] Compared with the prior art, the battery test system calibration tooling provided by the present utility model has the beneficial effects that:

[0027] By setting a first positive terminal port and a first negative terminal port respectively for connecting the positive electrode post and the negative electrode post at both ends of the channel of the battery test system, the positive electrode post and the negative electrode post are connected to the positive lead wire and the negative lead wire arranged inside the housing. After setting the current value in the constant current charging mode, start a channel, and use the Hall current sensor connected in series between the positive lead wire and the negative lead wire to detect the current value of this channel and compare it with the set current value; start with the constant voltage charging mode to set the voltage value, and the voltage sensor measures the voltage value of this channel and compares it with the set voltage value; after the test is completed, calibration can be performed according to the detected value and the set value; by setting a plurality of first switches, the first switches are used to control the on and off of each channel, so as to realize the detection of different channels. Using this battery test system calibration tooling can greatly improve the calibration efficiency, reduce human participation, and the detection result error is small, which can improve the reliability of the test result. Description of the Drawings

[0028] Figure 1 is a schematic structural diagram of the battery test system calibration tooling of the present utility model.

[0029] Figure 2 is a schematic diagram after the housing of the present utility model is assembled with the simulated battery.

[0030] Figure 3 is an internal circuit connection diagram of the battery test system calibration tooling of the present utility model.

[0031] Figure 4 is the present utility model Figure 3 an enlarged schematic diagram at position a in.

[0032] In the figure: 10, outer shell; 11, positive electrode wire; 12, negative electrode wire; 20, power supply box; 21, built-in power supply; 22, first positive lead; 23, first negative lead; 24, second positive lead; 25, second negative lead; 26, second switch; 30, first switch; 31, first positive terminal; 32, first negative terminal; 33, light-emitting diode; 40, Hall current sensor; 50, voltage sensor; 60, input / output port; 61, second positive terminal; 62, second negative terminal; 70, battery emulator; 71, positive electrode contact; 72, negative electrode contact. Specific embodiments

[0033] The following combines the accompanying drawings and embodiments to further describe in detail the specific embodiments of the present invention. The following embodiments are used to illustrate the present invention, but are not used to limit the scope of the present invention.

[0034] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. in the present invention is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0035] The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0036] In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0037] In the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or simply means that the horizontal height of the first feature is less than that of the second feature.

[0038] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation.

[0039] It should be noted that in the prior art, the battery test system has a channel for placing the battery to be tested, and positive and negative posts are provided at both ends of the channel. During the test, the battery to be tested needs to be placed in the channel of the corresponding module, and the positive and negative posts at both ends of the channel are respectively abutted against the positive and negative electrodes of the battery to be tested, and the device can be started to perform charging or discharging tests on the battery to be tested.

[0040] As Figures 1 - 4 shown, this embodiment provides a calibration tool for a battery test system, which includes a housing 10, a first switch 30, a Hall current sensor 40, a voltage sensor 50 and an input / output port 60.

[0041] For the convenience of description, in this embodiment, the first switch 30 is preferably a rotary switch, and the rotary switch has an open and a closed position, and the open and closed positions can be switched by rotation.

[0042] In the specific implementation, a positive wire 11 and a negative wire 12 are provided in the housing 10, and a Hall current sensor 40, a voltage sensor 50 and an input / output port 60 are sequentially connected in series between the positive wire 11 and the negative wire 12. By connecting the Hall current sensor 40 in series, the current between the positive and negative posts at both ends of each channel can be measured, and by connecting the voltage sensor 50 in series, the voltage between the positive and negative posts at both ends of each channel can be measured.

[0043] In some embodiments, the Hall current sensor 40 is preferably a through-hole current sensor. It should be noted that the through-hole current sensor is a general standard component or a component known to those skilled in the art, and its structure and principle can be known by those skilled in the art through technical manuals or by conventional experimental methods.

[0044] Further, there are multiple first switches 30, and the multiple first switches 30 are all installed on the housing 10. Each first switch 30 is connected to the positive wire 11 and the negative wire 12. The multiple first switches 30 are arranged in parallel with each other. Each first switch 30 is electrically connected to a first positive terminal port 31 and a first negative terminal port 32. The first positive terminal port 31 is configured to conduct with the positive wire 11 when the first switch 30 rotates to the open state, and the first negative terminal port 32 is configured to conduct with the negative wire 12 when the first switch 30 rotates to the open state. In this way, by setting the first positive terminal port 31 and the first negative terminal port 32 to be used for connecting the positive pole column and the negative pole column at both ends of the battery test system channel respectively, the positive pole column and the negative pole column are connected to the positive wire 11 and the negative wire 12 arranged in the housing 10, and by setting multiple first switches 30, the first switch 30 is used to control the on and off of each channel, so as to realize the detection of different channels. Using this battery test system calibration tooling can greatly improve the calibration efficiency, reduce human participation, and the detection result error is small, which can improve the reliability of the test result.

[0045] In the above embodiment, when measuring the current, after setting the current value in the constant current charging mode, start a channel, and use the Hall current sensor 40 connected in series between the positive wire 11 and the negative wire 12 to detect the current value of this channel, compare it with the set current value, and perform current calibration according to the detected value and the set value after the test is completed.

[0046] In the above embodiment, when measuring the voltage, set the voltage value in the constant voltage charging mode to start a channel, and the voltage sensor 50 measures the voltage value of this channel, and compare it with the set voltage value; perform voltage calibration according to the detected value and the set value after the test is completed.

[0047] It should be noted that since the positive pole column and the negative pole column at both ends of each channel are connected to the positive wire 11 and the negative wire 12 in a parallel manner, in order to ensure the accuracy of measuring the current and voltage, therefore, all the first switches 30 are default to the closed state before measurement. When adopting the above steps of measuring the current or measuring the voltage, only a single channel can be measured, that is, one of the first switches 30 rotates to the open state, and the rest of the first switches 30 rotate to the closed state, and each channel is operated in sequence according to the above steps to complete the test / calibration.

[0048] In the above embodiments, the term "a plurality of" is used to indicate that the number of the first switches 30 is at least two, such as 2, 3, 4, 5, 6, 7, 8 or more; in the prior art, in order to improve the battery test efficiency, the battery test system generally adopts an 8-channel structure. Therefore, in this embodiment, 8 first switches 30 are preferably used.

[0049] In some embodiments, in order to improve the layout rationality and aesthetics of the first switches 30, a plurality of first switches 30 are installed in the housing 10 in a matrix M×N. It should be noted that in the matrix M×N, M represents the number of "rows" and N represents the number of "columns". In this embodiment, it is preferably M = 1 and N = 8, that is, a plurality of first switches 30 are arranged in a matrix 1×8. The arrangement of the matrix 1×8 enables each first switch 30 to correspond to each channel, so as to facilitate identification and operation and improve the detection efficiency.

[0050] In some embodiments, during the test calibration process, it is necessary to connect the first positive terminal port 31 to the positive electrode post of the channel, or connect the first negative terminal port 32 to the negative electrode post of the channel. To ensure the connection stability between the first positive terminal port 31 and the positive electrode post or ensure the connection stability between the first negative terminal port 32 and the negative electrode post, therefore, the battery test system calibration tooling further includes a dummy battery 70. Positive electrode contacts 71 and negative electrode contacts 72 are respectively provided at both ends of the dummy battery 70. The positive electrode contact 71 is electrically connected to the first positive terminal port 31, and the negative electrode contact 72 is electrically connected to the first negative terminal port 32; by providing the dummy battery 70 for fixing the connection of the first positive terminal port 31 and the first negative terminal port 32, during the test calibration process, only the positive electrode contact 71 and the negative electrode contact 72 of the dummy battery 70 need to be respectively corresponding to the positive electrode post and the negative electrode post at both ends of the channel and then placed into the channel, so as to realize the electrical connection between the first positive terminal port 31 and the positive electrode post of the channel through the positive electrode contact 71, and the electrical connection between the first negative terminal port 32 and the negative electrode post of the channel through the negative electrode contact 72.

[0051] Using the dummy battery 70 is convenient for personnel operation, can reduce the wiring operation during the detection and calibration process, and improve the detection and calibration efficiency. In addition, through the dummy battery 70, a stable connection can be made between the first positive terminal port 31 and the positive electrode post of the channel and between the first negative terminal port 32 and the negative electrode post of the channel, avoiding poor contact and affecting the detection and calibration results.

[0052] In other embodiments, the dummy battery 70 can be selected according to the shape of the channel, but is not limited to a cube or a cylinder.

[0053] In some embodiments, to facilitate the operator to identify and control the opening and closing of the first switch 30, the battery test system calibration tool further includes a light-emitting diode 33. The light-emitting diode 33 is disposed inside the first switch 30 and is configured to light up when the first switch 30 rotates to the open state. By adding the light-emitting diode 33, it can light up when the first switch 30 rotates to the open state, thus playing an intuitive prompting role to avoid detection errors caused by operator mistakes, and further improving the reliability of the test results.

[0054] In other embodiments, to further enhance the prompting effect, the first switch 30 is made of a light-transmitting material. When the light-emitting diode 33 is powered on, the first switch 30 appears red or green. Red has the longest wavelength in the visible spectrum, and the visible distance of red is farther than that of other colors. Therefore, red as a prompting color can have the characteristics of being vigilant and eye-catching, facilitating identification and operation. And green is usually used in equipment to represent normal operation or system startup, which can also play a prompting effect.

[0055] In some embodiments, to achieve the lighting of the light-emitting diode 33 when the first switch 30 rotates to the open state, the battery test system calibration tool further includes a power supply box 20. The power supply box 20 is connected to the outer shell 10. An internal power supply 21 is provided inside the power supply box 20, and the internal power supply 21 is used to supply power to the light-emitting diode 33. That is, when the first switch 30 rotates to the open state, the light-emitting diode 33 is connected to the internal power supply 21 and lights up. When the first switch 30 rotates to the closed state, the light-emitting diode 33 is disconnected from the internal power supply 21 and goes out.

[0056] In the above embodiments, the internal power supply 21 is provided with a first positive lead 22 and a first negative lead 23. The light-emitting diode 33 is configured to conduct with the first positive lead 22 and the first negative lead 23 when the first switch 30 rotates to the open state. As Figure 4 shown, when the first switch 30 rotates clockwise by 90° to the horizontal state, the pins of the light-emitting diode 33 are conducted with the first positive lead 22 and the first negative lead 23, and at this time the light-emitting diode 33 lights up. When the first switch 30 rotates counterclockwise by 90° to the vertical state, the pins of the light-emitting diode 33 are disconnected from the first positive lead 22 and the first negative lead 23, and at this time the light-emitting diode 33 goes out.

[0057] In other embodiments, the power supply box 20 can be disposed outside the outer shell 10 or inside the outer shell 10. The setting method is selected according to actual needs, and it should not be construed as a limitation of the present invention.

[0058] In other embodiments, since there are multiple first switches 30, in order to enable each light-emitting diode 33 to work independently, the light-emitting diodes 33 in the multiple first switches 30 are connected to the first positive lead 22 and the first negative lead 23 in parallel.

[0059] In some embodiments, the input / output port 60 is installed on the outer side of the housing 10. The input / output port 60 includes a second positive terminal port 61 and a second negative terminal port 62. Multiple first positive terminal ports 31 are connected in parallel to the positive wire 11, and then the positive wire 11 is connected to the second positive terminal port 61. Multiple first negative terminal ports 32 are connected in parallel to the negative wire 12, and then the negative wire 12 is connected to the second negative terminal port 62. By providing the input / output port 60, all the first switches 30 can be rotated to the open state. At this time, all the channel lines are connected, and the positive posts and negative posts at both ends of the channels are connected in parallel respectively. A standard source is used to input a standard voltage value to the input / output port 60. At this time, the value displayed by the voltage sensor 50 is the standard voltage value. Thus, during the test, the host computer can be used to detect and obtain the voltage measurement values displayed by all the channels, and the data obtained by the host computer is compared with the standard voltage value input by the standard source, thereby realizing the voltage detection of all the channels and facilitating the subsequent calibration of the voltage.

[0060] In some embodiments, when the input / output port 60 is used as an output port, and when the accuracies of the built-in Hall current sensor 40 and voltage sensor 50 meet the detection / calibration requirements, the input / output port 60 is externally connected to an analog battery device / battery pack; when the requirements are not met, a high-precision ammeter is connected in series and a high-precision voltmeter is connected in parallel.

[0061] In some embodiments, when the input / output port 60 is used as an input port, a standard voltage source is connected in series to input a voltage.

[0062] In some embodiments, to facilitate the operator to read the detection data, the Hall current sensor 40 and the voltage sensor 50 are both embedded in the surface of the housing 10.

[0063] In some embodiments, the battery test system calibration tooling further includes a second positive lead 24, a second negative lead 25, and a second switch 26; the second positive lead 24 is connected to the positive pole of the built-in power supply 21; the second negative lead 25 is connected to the negative pole of the built-in power supply 21, and the Hall current sensor 40 and the voltage sensor 50 are connected in parallel to the second positive lead 24 and the second negative lead 25, and the built-in power supply 21 is used to supply power to the Hall current sensor 40 and the voltage sensor 50; the second switch 26 is connected in series to the second positive lead 24 and the second negative lead 25. The energized or de-energized state between the second positive lead 24 and the second negative lead 25 can be controlled through the second switch 26, so as to realize the controlled use of the Hall current sensor 40 and the voltage sensor 50, and at the same time, the loss of the built-in power supply 21 when not in use can be avoided.

[0064] In other embodiments, for easy carrying, a handle or a shoulder strap can also be provided on the housing 10 of the battery test system calibration tooling.

[0065] In other embodiments, the battery test system calibration tooling can also be provided with a data acquisition module to obtain the detection data of the Hall current sensor 40 and the voltage sensor 50, and transmit the detection data to the host computer in digital signals. The test system software of the host computer is used to compare and judge the data, and the mismatched data is adjusted and corrected by the host computer, so that the actual output value of the battery test system is consistent with the detected value, thereby achieving the purpose of automatic calibration.

[0066] The working process of the present utility model is as follows:

[0067] When the accuracies of the Hall current sensor 40 and the voltage sensor 50 meet the detection / calibration requirements, the input / output port 60 serves as an output port, and the current measurement method is as follows: An analog battery device / battery pack is externally connected between the second positive terminal 61 and the second negative terminal 62, one of the first switches 30 is rotated to the open state, and the remaining first switches 30 are rotated to the closed state. After setting the current value in the constant current charging mode, the channel corresponding to the opened first switch 30 is started, and the Hall current sensor 40 connected in series between the positive wire 11 and the negative wire 12 is used to detect the current value of this channel, and compared with the set current value. After the test is completed, current calibration is performed according to the detected value and the set value.

[0068] When the accuracies of the Hall current sensor 40 and the voltage sensor 50 meet the detection / calibration requirements, the input / output port 60 serves as an output port, and the voltage measurement method is as follows: An analog battery device / battery pack is externally connected between the second positive terminal port 61 and the second negative terminal port 62. One of the first switches 30 is rotated to the open state, and the remaining first switches 30 are rotated to the closed state. The channel corresponding to the opened first switch 30 is started in the constant voltage charging mode with a set voltage value. The voltage sensor 50 measures the voltage value of this channel and compares it with the set voltage value. After the test is completed, voltage calibration is performed according to the detected value and the set value.

[0069] When the input / output port 60 serves as an input port, the standard source method is used for voltage measurement as follows: All the first switches 30 are rotated to the open state. At this time, all the channel lines are connected, and the positive and negative columns at both ends of the channels are connected in parallel respectively. A standard voltage value is input to the input / output port 60 by using a standard source. At this time, the value displayed by the voltage sensor 50 is the standard voltage value. The upper computer is used to detect and obtain the voltage measurement values displayed by all the channels, and then the data obtained by the upper computer is compared with the standard voltage value input by the standard source, so as to realize the voltage detection of all the channels for subsequent voltage calibration.

[0070] Under specific conditions, the calibration tooling of the battery test system can also achieve simultaneous detection / calibration, that is, when the carrying capacities of the analog battery device / battery pack and the Hall current sensor 40 are large enough, all the first switches 30 are rotated to the open position, and the positive and negative poles of all the channels are connected in parallel respectively. The constant current charging / discharging mode is started simultaneously. At this time, the Hall current sensor 40 obtains the total value accumulated by all the channels. Then, the first switches 30 corresponding to each channel are closed one by one. The reduced part during the process of closing one by one is the current value of the closed channel until all are closed.

[0071] In summary, the embodiment of the present utility model provides a calibration tooling for a battery test system. By setting a plurality of first switches and using the first switches to control the on and off of each channel, the detection of different channels is realized. Using this calibration tooling for the battery test system can greatly improve the calibration efficiency, reduce human participation, and the detection result has a small error, which can improve the reliability of the test result.

[0072] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and replacements can be made, and these improvements and replacements should also be regarded as the protection scope of the present invention. The basic principles, main features and advantages of the present invention have been shown and described above. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above preferred embodiments. The embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to embrace all changes that fall within the meaning and scope of the equivalent elements of the claims in the present invention.

[0073] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in the embodiments can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A calibration tool for a battery test system, characterized in that, Comprising: A housing (10), within which a positive electrode wire (11) and a negative electrode wire (12) are provided; A Hall current sensor (40), which is connected in series to the positive electrode wire (11) and the negative electrode wire (12) for measuring the current between the positive electrode wire (11) and the negative electrode wire (12); A voltage sensor (50), which is connected in series to the positive electrode wire (11) and the negative electrode wire (12) for measuring the voltage between the positive electrode wire (11) and the negative electrode wire (12); An input / output port (60), which is connected in series between the positive electrode wire (11) and the negative electrode wire (12); and A plurality of first switches (30) mounted on the housing (10), the first switches (30) being connected to the positive electrode wire (11) and the negative electrode wire (12), and the plurality of first switches (30) being arranged in parallel with each other. Each first switch (30) is electrically connected to a first positive terminal port (31) and a first negative terminal port (32). The first positive terminal port (31) is configured to be conductive with the positive electrode wire (11) when the first switch (30) is in an open state, and the first negative terminal port (32) is configured to be conductive with the negative electrode wire (12) when the first switch (30) is in an open state.

2. The calibration tooling for a battery test system according to claim 1, wherein Further comprising: A battery emulator (70), with a positive electrode contact (71) and a negative electrode contact (72) provided at both ends thereof. The positive electrode contact (71) is electrically connected to the first positive terminal port (31), and the negative electrode contact (72) is electrically connected to the first negative terminal port (32).

3. A calibration tool for a battery test system according to claim 1, characterized in that, Further comprising: A light-emitting diode (33), which is provided inside the first switch (30). The first switch (30) is made of a light-transmitting material, and the light-emitting diode (33) is configured to light up when the first switch (30) is in an open state.

4. A calibration tool for a battery test system according to claim 3, wherein, Further comprising: A power supply box (20), which is connected to the housing (10). An internal power supply (21) is provided inside the power supply box (20), and the internal power supply (21) is used to supply power to the light-emitting diode (33).

5. A calibration tool for a battery test system according to claim 4, wherein The internal power supply (21) is provided with a first positive lead (22) and a first negative lead (23), and the light-emitting diode (33) is configured to be conductive with the first positive lead (22) and the first negative lead (23) when the first switch (30) is in an open state.

6. A calibration tool for a battery test system according to claim 1, characterized in that, The input / output port (60) is mounted on the outside of the housing (10). The input / output port (60) includes a second positive terminal port (61) and a second negative terminal port (62). A plurality of first positive terminal ports (31) are connected in parallel to the positive electrode wire (11), and then the positive electrode wire (11) is connected to the second positive terminal port (61). A plurality of first negative terminal ports (32) are connected in parallel to the negative electrode wire (12), and then the negative electrode wire (12) is connected to the second negative terminal port (62).

7. A calibration tool for a battery test system according to claim 1, characterized in that, The Hall current sensor (40) and the voltage sensor (50) are both embedded in the surface of the housing (10).

8. A calibration tool for a battery test system according to claim 1, characterized in that, A plurality of the first switches (30) are mounted in a matrix on the housing (10).

9. A calibration tool for a battery test system according to claim 4, wherein, It further includes: A second positive lead (24) connected to the positive pole of the built-in power supply (21); A second negative lead (25) connected to the negative pole of the built-in power supply (21). The Hall current sensor (40) and the voltage sensor (50) are connected in parallel to the second positive lead (24) and the second negative lead (25). The built-in power supply (21) is used to supply power to the Hall current sensor (40) and the voltage sensor (50); and A second switch (26) connected in series to the second positive lead (24) and the second negative lead (25).

10. A calibration tool for a battery test system according to claim 1, characterized in that, The Hall current sensor (40) is a through-core current sensor.

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