Precision calibration tool and system for blade lithium battery formation and capacity grading equipment

Abstract

The utility model discloses a precision calibration tool for blade lithium battery formation and capacity grading equipment, and relates to the technical field of lithium batteries. The precision calibration tool for the blade lithium battery formation and capacity grading equipment comprises a box body, a plurality of relay switches, a copper bus bar, a current detection assembly and a converter, the box body is provided with a power taking port, a first side plate and a second side plate, the first side plate and the second side plate are oppositely arranged, and the first side plate and the second side plate are each provided with a plurality of contact pole columns; the plurality of relay switches are arranged in the box body; the contact pole on the first side plate and the corresponding contact pole on the second side plate are electrically connected with the probes on the two sides of the blade lithium battery respectively to form a charging and discharging loop. The precision calibration tool for the blade lithium battery formation and capacity grading equipment provided by the utility model can be suitable for the blade lithium battery formation and capacity grading equipment; and the calibration efficiency can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium batteries, and more specifically, to a precision calibration tool for a blade lithium battery capacity splitting device. In addition, the utility model also relates to a capacity splitting system including the precision calibration tool for the blade lithium battery capacity splitting device. Background Art

[0002] Blade lithium batteries have excellent comprehensive performance, and capacity division is a key process in the production process of lithium batteries. After the blade lithium batteries are assembled, they need to go through the formation process for the first charge to activate the active substances in the battery; capacity division is to charge and discharge the activated battery in a cycle, so as to screen out the cells with qualified capacity and group them. When the capacity division equipment is in the process of charging and discharging, the current will encounter resistance in each small section of the circuit and produce a certain voltage drop. Therefore, when the battery is formed and divided, some electricity will be lost, and there will be errors in the final battery test data results. There is a high possibility of safety accidents such as overcharging and over-discharging. Therefore, it is necessary to use precision calibration tools to calibrate the voltage and current of the charging and discharging circuit in the capacity division cabinet, so as to calibrate and adjust to zero, ensure the elimination of the voltage drop value, and ensure the accuracy of data such as the cell capacity and internal resistance.

[0003] The power accuracy calibration technology in existing chemical fractionation equipment can be divided into tooling calibration and non-tooling calibration: non-tooling calibration requires manual wiring of each battery cell channel, which has the problems of small operating space, cumbersome wiring, and low efficiency, and has certain safety hazards. In addition, frequent power-on and power-off operations will cause damage to the equipment. For tooling calibration, the devices currently used for automatic accuracy calibration of chemical fractionation equipment on the market are mostly used for ordinary lithium batteries and cannot be applied to blade lithium batteries. In addition, the existing tooling is a simple panel structure and needs to be equipped with a tooling trolley to interact with the calibration panel in the equipment through the network cable and the equipment in the tooling trolley to collect data for calibration. In addition, the existing calibration tooling has reliability issues. When the contact pole of the tooling is docked with the probe of the chemical fractionation equipment, there is a risk of accidentally touching the overall conductive short circuit.

[0004] In summary, how to provide a precision calibration tool suitable for the chemical composition and capacity equipment of blade lithium batteries is a problem that needs to be urgently solved by technical personnel in this field. Utility Model Content

[0005] In view of this, the purpose of the utility model is to provide a precision calibration tool for blade lithium battery capacity-splitting equipment, which can be used for the precision calibration of blade lithium battery capacity-splitting equipment and can effectively improve the calibration efficiency.

[0006] Another object of the utility model is to provide a capacity splitting system including the precision calibration tooling of the blade lithium battery capacity splitting equipment.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A precision calibration tool for blade lithium battery fractionation equipment, comprising:

[0009] The box body is provided with a power supply port for taking power from the chemical component cabinet and a first side plate and a second side plate arranged opposite to each other, and the first side plate and the second side plate are both provided with a plurality of contact poles;

[0010] A plurality of relay switches are arranged in the box, one end of the relay switch in the same charge and discharge circuit is connected to a contact pole on the first side plate, and the other end is connected to a corresponding contact pole in the second side plate; the contact pole on the first side plate and the corresponding contact pole on the second side plate are respectively electrically connected to the probes located on both sides of the blade lithium battery in the chemical storage cabinet to form the charge and discharge circuit;

[0011] A busbar electrically connecting adjacent relay switches;

[0012] A current detection component, disposed in the box and electrically connected to the charge-discharge circuit, for detecting the current value and voltage value of the charge-discharge circuit during the charge-discharge process;

[0013] The converter comprises an AC end and a DC end, wherein the AC end is connected to the power intake port, and the DC end is connected to the busbar.

[0014] Optionally, the first side plate and the second side plate are both insulating plates, and the plurality of contact poles are spaced apart on the first side plate and the second side plate;

[0015] The number of the plurality of contact poles in the first side plate is the same as the number of the plurality of contact poles in the second side plate, and they are arranged opposite to each other one by one.

[0016] Optionally, the plurality of contact poles are arranged at the same height on the first side plate and the second side plate.

[0017] Optionally, a bracket is provided in the box, and the relay switch and the busbar are both installed on the bracket.

[0018] Optionally, a control circuit board is also included, and the relay switch and the current detection component are both connected to the control circuit board. The control circuit board is used to control the on and off of the relay switch and obtain the data measured by the current detection component.

[0019] Optionally, the current detection component includes a multimeter and a current transformer, the multimeter is connected to the busbar, the current transformer, and the control circuit board, and the current transformer is connected in series to the charge and discharge circuit.

[0020] Optionally, it also includes a first switch and a second switch, wherein the first switch and the second switch are both electrically connected to the power port, and the first switch is electrically connected to the current transformer to control the on and off of the current transformer; the second switch is connected to the control circuit board and the multimeter.

[0021] Optionally, the box body is provided with an axial flow fan and an air guide hole, and the axial flow fan and the air guide hole are respectively arranged on two opposite side surfaces of the box body; the axial flow fan is connected to the control circuit board;

[0022] Alternatively, the box is provided with an air switch for controlling the power on and off at the power intake port, an external power intake interface, a communication interface, a network interface and a reset button, and the reset button and the network interface are both connected to the control circuit board.

[0023] Optionally, the box body is provided with a positioning part, which is used to cooperate with the chemical component cabinet to limit the installation position of the box body in the chemical component cabinet, and when the positioning part is installed in cooperation with the chemical component cabinet, the probes on both sides of the chemical component cabinet are connected to the contact poles, and the power intake port is electrically connected to the industrial frequency AC power in the chemical component cabinet.

[0024] A capacity splitting system comprises a precision calibration tool for the blade lithium battery capacity splitting equipment as described in any one of the above items and a capacity splitting cabinet, wherein the blade lithium battery is installed in the capacity splitting cabinet, and the capacity splitting cabinet is provided with a clamping part for limiting the installation position of the precision calibration tool for the blade lithium battery capacity splitting equipment.

[0025] In the process of using the precision calibration tooling of the blade lithium battery capacity splitting equipment provided by the utility model, first, it is necessary to install the precision calibration tooling of the blade lithium battery capacity splitting equipment into a capacity splitting cabinet, and connect to the industrial frequency alternating current in the capacity splitting cabinet through the power port, and the probes on both sides of the capacity splitting cabinet are connected to the contact poles. Here, according to the measurement needs, multiple probes can be set, two probes are set in one charge and discharge circuit, and multiple probes correspond to multiple charge and discharge circuits; multiple probes are connected to corresponding contact poles, and multiple probes are set. During the detection process, the corresponding relay switch is controlled to be energized, so that the corresponding contact pole is electrically connected to the probes located on both sides of the blade lithium battery in the capacity splitting cabinet to form a charge and discharge circuit, and the current detection component detects the current value and voltage value of the charge and discharge circuit during the charge and discharge process.

[0026] When the charging condition of the chemical splitter cabinet is calibrated, the DC power of the chemical splitter cabinet is connected to the contact pole, and is input to the DC end of the converter through the relay switch and the busbar. The converter converts the DC power into industrial frequency AC power, and feeds it back to the grid through the power intake port from the line inside the chemical splitter cabinet, realizing the energy dissipation of the charging process.

[0027] When calibrating the discharge condition of the chemical splitter cabinet, the power port inputs industrial frequency AC power from the chemical splitter cabinet, converts it into DC power through the inverter, and outputs it to the contact pole through the bus bar and relay switch, thereby simulating the lithium battery discharge process and finally outputting it to the equipment probe.

[0028] When multi-channel calibration is required, after completing the calibration of one channel, the current relay switch is controlled to be disconnected, and the next relay switch is controlled to be powered on to complete the switching of the measurement channel. By controlling the on and off of multiple relay switches in sequence, the charge and discharge circuits formed by multiple contact poles are calibrated in sequence to achieve multi-channel detection calibration. Of course, under the condition that the requirements are met, multiple current detection components can also be set to calibrate the charge and discharge circuits formed by multiple contact poles at the same time, which is determined according to the actual situation.

[0029] The precision calibration tooling of the blade lithium battery capacity splitting equipment provided by the utility model is provided with a plurality of contact poles, and is electrically connected to the probes located on both sides of the battery in the capacity splitting cabinet through the contact poles, and can be applicable to the capacity splitting equipment of the blade lithium battery; and during use, only a single tooling is required to simulate various working conditions such as charging and discharging of the equipment, and can complete the detection of multiple channels, which can effectively improve the calibration efficiency; in addition, the components and cables of the precision calibration tooling are integrated into the box body, avoiding the safety risk of exposed cables, and can directly connect to the industrial frequency AC power from the capacity splitting equipment cabinet without the need for external cables to draw power.

[0030] In addition, the utility model also provides a capacity splitting system including the precision calibration tooling of the above-mentioned blade lithium battery capacity splitting equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0032] Figure 1 A structural schematic diagram of a specific embodiment of a precision calibration tool for a blade lithium battery fractionation device provided by the utility model;

[0033] Figure 2 A schematic diagram of the internal structure of the precision calibration tooling for blade lithium battery fractionation equipment;

[0034] Figure 3 A top view of the internal component layout of the precision calibration tooling for blade lithium battery capacity conversion equipment.

[0035] Figure 1-Figure 3 middle:

[0036] 1 is a box body, 11 is an axial flow fan, 12 is an air guide hole, 13 is an air switch, 14 is an external power interface, 15 is a network interface, 16 is a communication interface, 17 is a reset button, 2 is a cover plate, 3 is a side plate, 31 is a power port, 32 is a contact pole, 41 is a bracket, 42 is a relay switch, 43 is a bus bar, 51 is a terminal block, 52 is a converter, 53 is a first switch, 54 is a second switch, 55 is a socket, 56 is a control circuit board, 57 is a multimeter, and 58 is a current transformer. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0038] The core of the utility model is to provide a precision calibration tool for blade lithium battery capacity-splitting equipment, which can be used for the precision calibration of blade lithium battery capacity-splitting equipment and can effectively improve the calibration efficiency.

[0039] Another core of the utility model is to provide a capacity splitting system including the precision calibration tooling of the above-mentioned blade lithium battery capacity splitting equipment.

[0040] Please refer to Figures 1 to 3 .

[0041] It should be noted that the blade lithium battery has a special shape of being narrow and thin, and the electrodes are located at both ends of the battery. Therefore, the appearance structure of its chemical composition equipment calibration tooling is also very different from that of conventional tooling. The contact poles 32 of the tooling are respectively located on the first side plate and the second side plate that are opposite to each other. Each contact pole 32 is connected to a separate relay switch 42, and is connected to the inverter 52 and the multimeter 57 through the bus copper bus 43, thereby simulating the charging and discharging circuit of the blade lithium battery.

[0042] The present specific embodiment discloses a precision calibration tool for a blade lithium battery splitting device, including a box body 1, a plurality of relay switches 42, a busbar 43, a current detection component and a current transformer 52, wherein the box body 1 is provided with a power supply port 31 for taking power from the splitting cabinet and a first side plate and a second side plate arranged opposite to each other, and the first side plate and the second side plate are both provided with a plurality of contact poles 32; a plurality of relay switches 42 are arranged in the box body 1, one end of the relay switch 42 in the same charge and discharge circuit is connected to a contact pole 32 on the first side plate, and the other end is connected to a contact pole 32 on the first side plate. The end is connected to a corresponding contact pole 32 in the second side panel; the contact pole 32 on the first side panel and the corresponding contact pole 32 on the second side panel are respectively electrically connected to the probes located on both sides of the blade lithium battery in the storage cabinet to form a charging and discharging circuit; the bus bar 43 is electrically connected to the adjacent relay switch 42; the current detection component is arranged in the box body 1 and is electrically connected to the charging and discharging circuit, and is used to detect the current value and voltage value of the charging and discharging circuit during the charging and discharging process; the inverter 52 includes an AC end and a DC end, the AC end is connected to the power intake port 31, and the DC end is connected to the bus bar 43.

[0043] It should be noted that the box body 1 is provided with a plurality of side panels 3 , and the side panels 3 include a first side panel and a second side panel that are oppositely arranged, wherein the side panels 3 are side panels that are arranged perpendicular to the cover plate 2 .

[0044] like Figure 2 As shown, two bus copper bars 43 are arranged in the box body 1, and two relay switches 42 are arranged in the same charge and discharge circuit, one end of one relay switch 42 is connected to a contact pole 32 on the first side plate, and the other end is connected to one of the bus copper bars 43, and one end of another relay switch 42 is connected to the corresponding contact pole 32 on the second side plate, and the other end is connected to another bus copper bar 43, and the two bus copper bars 43 are electrically connected. Of course, according to actual needs, the actual number of relay switches 42 in the same charge and discharge circuit needs to be determined according to actual conditions, and the number of bus copper bars 43 also needs to be determined according to actual conditions, which will not be elaborated here.

[0045] In the present specific embodiment, one end of the relay switch 42 in the same charge and discharge circuit is connected to a contact pole 32 on the first side plate, and the other end is connected to a corresponding contact pole 32 in the second side plate. Specifically, when only one relay switch 42 is provided in the same charge and discharge circuit, one relay switch 42 in the same charge and discharge circuit is connected to a contact pole 32 on the first side plate and a corresponding contact pole 32 in the second side plate; when multiple relay switches 42 are provided in the same charge and discharge circuit, the multiple relay switches 42 can be electrically connected through a bus bar 43, and the multiple relay switches 42 in the same charge and discharge circuit are connected in series, and one end of the multiple relay switches 42 connected in series is connected to a contact pole 32 on the first side plate, and the other end is connected to a corresponding contact pole 32 in the second side plate.

[0046] In the process of using the precision calibration tooling of the blade lithium battery capacity splitting equipment provided in this specific embodiment, first, the precision calibration tooling of the blade lithium battery capacity splitting equipment needs to be installed in the capacity splitting cabinet, and the industrial frequency AC power in the capacity splitting cabinet is connected through the power port 31, and the probes on both sides of the capacity splitting cabinet are docked with the contact poles 32. Here, according to the measurement needs, multiple probes can be set, two probes are set in one charge and discharge circuit, and multiple probes correspond to multiple charge and discharge circuits; multiple probes are docked with corresponding contact poles 32 at the same time. Control the corresponding relay switch 42 to be energized, so that the corresponding contact pole 32 is electrically connected to the probes on both sides of the blade lithium battery in the capacity splitting cabinet to form a charge and discharge circuit, and the current detection component detects the current value and voltage value of the charge and discharge circuit during the charge and discharge process.

[0047] When the charging condition of the storage cabinet is calibrated, the DC power of the storage cabinet is connected to the contact pole 32, and is input to the DC end of the converter 52 through the relay switch 42 and the busbar 43. The converter 52 converts the DC power into industrial frequency AC power, and feeds it back to the power grid through the power intake port 31 from the line inside the storage cabinet, thereby realizing the energy dissipation of the charging process.

[0048] When the discharge condition of the chemical splitter cabinet is calibrated, the power port 31 inputs industrial frequency AC power from the chemical splitter cabinet, converts it into DC power through the converter 52, and outputs it to the contact pole 32 through the bus bar 43 and the relay switch 42, thereby simulating the discharge process of the lithium battery, and finally outputs it to the equipment probe.

[0049] When multi-channel calibration is required, after completing the calibration of one channel, the current relay switch 42 is controlled to be disconnected, and the next relay switch 42 is controlled to be powered on, so as to complete the switching of the measurement channel. By controlling the sequential on and off of multiple relay switches 42, the charge and discharge circuits formed by multiple contact poles 32 are calibrated in sequence to achieve multi-channel detection calibration. Of course, under the condition that the requirements are met, multiple current detection components can also be set to calibrate the charge and discharge circuits formed by multiple contact poles 32 at the same time, which is determined according to the actual situation.

[0050] The precision calibration tooling of the blade lithium battery capacity splitting equipment provided in this specific embodiment is provided with a plurality of contact poles 32, and is electrically connected to the probes located on both sides of the battery in the capacity splitting cabinet through the contact poles 32, and can be applicable to the capacity splitting equipment of the blade lithium battery; and during use, only a single tooling is required to simulate various working conditions such as charging and discharging of the equipment, and can complete the detection of multiple channels, which can effectively improve the calibration efficiency; in addition, the components and cables of this precision calibration tooling are integrated into the box body 1, avoiding the safety risk of exposed cables, and can directly connect to the industrial frequency AC power from the capacity splitting equipment cabinet without the need for external cables to draw power.

[0051] Specifically, the first side plate and the second side plate can both be insulating plates, and multiple contact poles 32 can be arranged at intervals on the first side plate and the second side plate; the number of multiple contact poles 32 in the first side plate is the same as the number of multiple contact poles 32 in the second side plate, and they are arranged one by one.

[0052] like Figure 1 As shown, the box body 1 is a rectangular parallelepiped structure, the first side plate and the second side plate in the box body 1 are arranged opposite to each other, and the contact poles 32 on the first side plate and the second side plate are arranged opposite to each other one by one, and the relay switch 42 is arranged between the two pairs of contact poles 32. Since the first side plate and the second side plate are both made of insulating materials, the insulation performance between adjacent contact poles 32 can be effectively guaranteed.

[0053] Specifically, a cover plate 2 may be provided on the box body 1 , and the cover plate 2 may be opened and closed on the box body, so that the cover plate 2 can be opened conveniently for maintenance or installation.

[0054] Furthermore, the plurality of contact poles 32 may be arranged at the same height on the first side plate and the second side plate, and the intervals between adjacent contact poles may be the same, and the sizes of all contact poles 32 may be the same.

[0055] In this specific embodiment, the first side plate and the second side plate are both made of insulating materials, each contact pole 32 is connected to the corresponding relay switch 42, and the relay switch 42 is driven on and off by the control circuit board 56 to switch different calibration channels. The operation is reliable and the problem of accidental touching of the overall conductive short circuit is effectively prevented.

[0056] like Figure 2 As shown, a bracket 41 can be set in the box body 1, and the relay switch 42 and the bus bar 43 are both installed on the bracket 41. The installation through the bracket 41 can improve the heat dissipation effect of the relay switch 42 and the bus bar 43. In addition, the installation of the bracket 41 can set the relay switch 42, the bus bar 43, and the contact pole 32 at the same height position, with multiple line lengths.

[0057] Based on the above embodiment, the precision calibration tooling of the blade lithium battery componentization equipment also includes a control circuit board 56, and the relay switch 42 and the current detection component are both connected to the control circuit board 56. The control circuit board 56 is used to control the on and off of the relay switch 42 and obtain the data measured by the current detection component.

[0058] The current detection component includes a multimeter 57 and a current transformer 58. The multimeter 57 is connected to the busbar 43, the current transformer 58, and the control circuit board 56. The current transformer 58 is connected in series to the charge and discharge circuit.

[0059] In the actual setting process, the AC end of the converter 52 can be connected to the power outlet 31 through the wiring terminal 51, and the multimeter 57 and the relay switch 42 can be controlled by the control circuit board 56, which is conducive to realizing automatic control. The control circuit board 56 controls multiple relay switches 42 to be turned on and off in a preset order, so that multi-channel calibration can be realized. The specific on-off order of the relay switch 42 can be carried out from one end to the other end, or from the middle to both ends, or in other pre-set order. It is determined according to the actual situation and will not be repeated here.

[0060] The precision calibration tooling of the blade lithium battery componentization equipment also includes a first switch 53 and a second switch 54, both of which are electrically connected to the power intake port 31, and the first switch is electrically connected to the current transformer 58 to control the on and off of the current transformer 58; the second switch 54 is connected to the control circuit board 56 and the multimeter 57.

[0061] In actual use, the first switch 53 and the second switch 54 both draw power from the power port 31 , wherein the first switch 53 supplies power to the current transformer 58 , the second switch 54 supplies power to the control circuit board 56 , and supplies power to the multimeter 57 through the socket 55 .

[0062] In a specific embodiment, an axial flow fan 11 can be installed on one side of the inner wall of the box body 1, and an air guide hole 12 is opened on the other side to dissipate heat from the heating device; in addition, an air switch 13, an external power supply interface 14, a communication interface 16, a network interface 15 and a reset button 17 are installed on the inner wall of the box body 1, and the reset button 17 and the network interface 15 are both connected to the control circuit board 56; the external power supply interface 14 is used to input AC power from the outside, so that the calibration tool has two power supply methods, which is different from the power supply inside the cabinet. The external power supply can be used for on-site debugging of the tool.

[0063] In addition, in order to facilitate the positioning and installation of the precision calibration tooling of the blade lithium battery chemical separation equipment into the chemical separation cabinet, a positioning part can be set on the box body 1, and the positioning part is used to cooperate with the chemical separation cabinet to limit the installation position of the box body 1 in the chemical separation cabinet. When the positioning part is installed in cooperation with the chemical separation cabinet, the probes on both sides of the chemical separation cabinet are connected to the contact poles 32, and the power port 31 is electrically connected to the industrial frequency AC power in the chemical separation cabinet.

[0064] The method of using the precision calibration tooling for the blade lithium battery fractionation equipment mentioned in this application document is as follows:

[0065] In the first step, the precision calibration tooling of the blade lithium battery splitting equipment is installed in the splitting cabinet, and the industrial frequency AC power in the cabinet is connected through the power port 31, and the probes on both sides of the splitting cabinet are connected to the corresponding contact poles 32.

[0066] The second step is detection and calibration: the control circuit board 56 outputs a signal to turn on the relay switch 42 and form a single charge and discharge circuit. The multimeter 57 detects the voltage value of the contact pole 32 and detects the current value of the charge and discharge power line by connecting the current transformer 58.

[0067] When the charging condition of the capacity-splitting device is calibrated, the DC current enters the contact pole 32, and is input to the DC end of the converter 52 through the relay switch 42 and the busbar 43. The converter 52 converts it into industrial frequency AC power, which is finally fed back to the power grid through the power intake port 31 through the line in the capacity-splitting cabinet, thereby realizing the energy dissipation of the charging process.

[0068] When calibrating the discharge condition of the capacity conversion device, the power intake port 31 inputs industrial frequency alternating current, which is converted into direct current by the converter 52 and output to the contact pole 32 through the bus bar 43 and the relay switch 42, thereby simulating the discharge process of the lithium battery and finally outputting to the device probe.

[0069] In the third step, after the measurement of the channel is completed, the control circuit board 56 drives to disconnect the current relay switch 42 and connect the next group of relay switches 42, thereby completing the switching of the measurement channel. The relay switches 42 are turned on and off in sequence under the drive of the control circuit board 56, thereby realizing multi-channel detection and calibration.

[0070] In addition to the precision calibration tooling of the above-mentioned blade lithium battery capacitating equipment, the utility model also provides a capacitating system including the precision calibration tooling of the blade lithium battery capacitating equipment disclosed in the above-mentioned embodiment and a capacitating cabinet, wherein blade lithium batteries are installed in the capacitating cabinet, and a clamping portion for limiting the installation position of the precision calibration tooling of the blade lithium battery capacitating equipment is provided in the capacitating cabinet. For the structures of other parts of the capacitating system, please refer to the prior art and will not be repeated herein.

[0071] Each embodiment in this specification is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referenced to each other. Any combination of all embodiments provided by the utility model is within the protection scope of this utility model and will not be described in detail here.

[0072] The above is a detailed introduction to the precision calibration tooling and system of the blade lithium battery capacity-forming equipment provided by the utility model. This article uses specific examples to illustrate the principles and implementation methods of the utility model. The description of the above embodiments is only used to help understand the method of the utility model and its core idea. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the utility model.

Claims

1. A precision calibration tool for blade lithium battery fractionation equipment, characterized in that: include: The box body (1) is provided with a power supply port (31) for taking power from the chemical component storage cabinet, and a first side plate and a second side plate arranged opposite to each other, wherein the first side plate and the second side plate are both provided with a plurality of contact poles (32); A plurality of relay switches (42) are arranged in the box (1); one end of the relay switch in the same charge-discharge circuit is connected to a contact pole (32) on the first side plate, and the other end is connected to a corresponding contact pole (32) in the second side plate; the contact pole (32) on the first side plate and the corresponding contact pole (32) on the second side plate are respectively electrically connected to probes located on both sides of the blade lithium battery in the chemical storage cabinet to form the charge-discharge circuit; A busbar (43) electrically connecting adjacent relay switches (42); A current detection component is arranged in the box (1) and electrically connected to the charge and discharge circuit, and is used to detect the current value and voltage value of the charge and discharge circuit during the charge and discharge process; The converter (52) comprises an AC end and a DC end, wherein the AC end is connected to the power intake port (31) and the DC end is connected to the busbar (43).

2. The precision calibration tool for blade lithium battery fractionation equipment according to claim 1 is characterized in that: The first side plate and the second side plate are both insulating plates, and a plurality of contact poles (32) are arranged at intervals on the first side plate and the second side plate; The number of the plurality of contact poles (32) in the first side plate is the same as the number of the plurality of contact poles (32) in the second side plate, and they are arranged opposite to each other one by one.

3. The precision calibration tool for blade lithium battery fractionation equipment according to claim 2 is characterized in that: The plurality of contact poles (32) are arranged at the same height on the first side plate and the second side plate.

4. The precision calibration tool for blade lithium battery fractionation equipment according to claim 2 is characterized in that: A bracket (41) is arranged in the box body (1), and the relay switch (42) and the busbar (43) are both installed on the bracket (41).

5. The precision calibration tool for blade lithium battery fractionation equipment according to any one of claims 1 to 4, characterized in that: It also includes a control circuit board (56), the relay switch (42) and the current detection component are both connected to the control circuit board (56), and the control circuit board (56) is used to control the on and off of the relay switch (42) and obtain data measured by the current detection component.

6. The precision calibration tool for blade lithium battery fractionation equipment according to claim 5 is characterized in that: The current detection component comprises a multimeter (57) and a current transformer (58); the multimeter (57) is connected to the busbar (43), the current transformer (58), and the control circuit board (56); and the current transformer (58) is connected in series to the charge and discharge circuit.

7. The precision calibration tool for blade lithium battery fractionation equipment according to claim 6, characterized in that: It also includes a first switch (53) and a second switch (54), wherein the first switch (53) and the second switch (54) are both electrically connected to the power port (31), the first switch is electrically connected to the current transformer (58) to control the on and off of the current transformer (58); and the second switch (54) is connected to the control circuit board (56) and the multimeter (57).

8. The precision calibration tool for blade lithium battery fractionation equipment according to claim 5, characterized in that: The box body (1) is provided with an axial flow fan (11) and an air guide hole (12), and the axial flow fan (11) and the air guide hole (12) are respectively arranged on two opposite side surfaces of the box body (1); the axial flow fan (11) is connected to the control circuit board (56); Alternatively, the box (1) is provided with an air switch (13) for controlling the power on and off at the power intake port (31), an external power intake interface (14), a communication interface (16), a network interface (15) and a reset button (17), and the reset button (17) and the network interface (15) are both connected to the control circuit board (56).

9. The precision calibration tool for blade lithium battery fractionation equipment according to any one of claims 1 to 4, characterized in that: The box body (1) is provided with a positioning portion, and the positioning portion is used to cooperate with the chemical separation cabinet to limit the installation position of the box body (1) in the chemical separation cabinet, and when the positioning portion and the chemical separation cabinet are in a state of installation in cooperation, the probes on both sides of the chemical separation cabinet are connected to the contact poles (32), and the power outlet (31) is electrically connected to the industrial frequency alternating current in the chemical separation cabinet.

10. A chemical fractionation system, characterized in that: It comprises the precision calibration tooling of the blade lithium battery capacity splitting equipment and a capacity splitting cabinet as described in any one of claims 1 to 9, wherein the blade lithium battery is installed in the capacity splitting cabinet, and the capacity splitting cabinet is provided with a clamping part for limiting the installation position of the precision calibration tooling of the blade lithium battery capacity splitting equipment.

Images