A cell precision calibration tool for formation and grading equipment

Abstract

The present invention discloses a cell precision calibration tooling for a formation and capacitance measurement device in the technical field of formation and capacitance calibration, which includes a tooling box body, a fully enclosed ventilated hollow box body. On its top, there are respectively two calibration scales and two electrode plates. The two calibration scales are arranged in parallel on the opposite side edges of the top of the tooling box body. When detecting a formation and capacitance measurement device for a square cell, it can be quickly plugged and connected. Only by aligning this device with the power-taking port of the formation and capacitance measurement device and pushing it in, the power-taking and data connection of the device components can be completed. The installation is very convenient. Moreover, a wireless router and a multimeter are integrated inside this device, making the data detection of this device for the formation and capacitance measurement device more convenient. This device installs all the detection components in a whole protective box body in a coordinated manner, and the circuit is more regular.

Description

Technical Field

[0001] The present invention relates to the technical field of formation and grading calibration, and particularly to a cell precision calibration tooling for formation and grading equipment. Background Art

[0002] When square lithium batteries are hot-pressed for formation and graded, a large current needs to be passed between the positive and negative electrodes of each battery for charging and discharging. By charging and discharging the cells, data such as the capacity and internal resistance of these cells can be analyzed to determine the quality grade of the cells, and they are grouped to select batteries with the same electrical parameters for series and parallel applications. When the formation and grading equipment is in the process of charging and discharging, the current will encounter resistance in each small section during its flow in the circuit, resulting in a certain voltage drop. Therefore, when forming and grading the cells, a part of the power will be lost, and there will be errors in the final test data results of the cells. Moreover, safety accidents such as overcharging and over-discharging are very likely to occur. Therefore, it is necessary to calibrate the voltage and current of the test power supply through a precision calibration tooling, so as to calibrate and zero-adjust to ensure the elimination of the voltage drop value and the accuracy of data such as the cell capacity and internal resistance.

[0003] Currently, the devices for automatic precision calibration of formation and grading equipment on the market are mostly of a simple panel structure and also require a tooling cart for assistance. The calibration panel in the equipment is interactively connected with the equipment in the tooling cart through an Ethernet cable to collect data for calibration.

[0004] The defects of the prior art are mainly manifested in: 1. Complicated operation and messy wiring. The tooling used on the market currently requires manual external connection of a 220V interface to supply power to the tooling instruments outside the equipment, and then through cables and Ethernet connections to connect to the tooling panel. The overall cables are exposed, posing safety problems; 2. The exposed cables are messy and not beautiful, and a tooling cart is also required to place the instruments. The instruments and the tooling panel are independently separated, making the operation inconvenient; 3. Poor compatibility. Most of the tooling used on the market are in the form of a panel. Although they can be compatible with the cell pole pitch, the number of channels, and the front and rear probe pitches, the panel size is a fixed structure with poor compatibility. For each formation and grading cabinet with different power-taking sockets, a fixed panel needs to be separately equipped, which is very inconvenient. Moreover, when the cell pole pitch is slightly different, the structure of such a panel cannot be compatible, that is, not only the panel size needs to be separately equipped, but also the cell pole pitch needs to re-match a panel, and data transmission also requires separately pulling a data cable for use by an external monitoring computer, which is very inconvenient.

[0005] Based on this, the present invention designs a cell precision calibration tooling for formation and grading equipment to solve the above problems. Summary of the Invention

[0006] The object of the present invention is to provide a cell precision calibration tool for a formation and grading equipment, which can achieve quick insertion and connection when detecting a square cell formation and grading equipment. Only by aligning this device with the power-taking port of the formation and grading equipment and pushing it in, the power-taking and data connection of the devices of the equipment can be completed. The installation is very convenient. Moreover, a wireless router and a multimeter are integrated inside this device, making the data detection of this device for the formation and grading equipment more convenient. Only by pushing this device into the formation and grading cabinet for docking is required. And all the detection devices of this device are cooperatively connected and installed in an integral protective box body, the circuit is more regular, and the circuit is not exposed outside, making it safer to use.

[0007] The present invention is implemented as follows: A cell precision calibration tool for a formation and grading equipment, comprising:

[0008] A tool box body, which is a fully enclosed ventilated hollow box body, and two calibration scales and two electrode plates are respectively provided on its top. The two calibration scales are arranged in parallel on the opposite side edges of the top of the tool box body, and both sides of each electrode plate are erected and locked between the two calibration scales on both sides through bolts in an adjustable manner;

[0009] Two tool guiding strips are symmetrically installed on the tool box body, and the tool box body can be slidably separated in the formation and grading cabinet through the tool guiding strips;

[0010] A multimeter, a wireless router and a printed circuit board are all installed in the tool box body;

[0011] A power-taking socket is fixedly arranged on the inner side wall of the tool box body and is in pluggable electrical connection with the power-taking port in the formation and grading cabinet;

[0012] The printed circuit board is electrically connected to the power-taking socket through a transformer, and the multimeter and the wireless router are both electrically connected to the external circuit of the printed circuit board.

[0013] Further, it further includes a conversion docking box, which is a hollow box body with an opening on one side, and can be detachably clamped and covered on the side wall of the tool box body with the tool guiding strips;

[0014] There are two conversion calibration scales, which are arranged in parallel on the top of the conversion docking box and are respectively in a straight-line docking with the two calibration scales on the top of the tool box body;

[0015] A conversion guiding strip is fixedly arranged on the outer wall of the side parallel to and opposite to the opening side of the conversion docking box and is arranged in parallel with the two tool guiding strips.

[0016] Further, a plurality of clamping pieces are provided on one side of the opening of the conversion docking box. Two communicating round holes with a smaller upper part and a larger lower part are opened on the clamping pieces. The conversion docking box can be detachably clamped with the bolts on the side wall of the tooling box body through the clamping pieces.

[0017] Further, the two electrode plates are parallel to each other; the two tooling guiding strips are arranged parallel to each other on the vertical side wall of the tooling box body, and the two electrode plates are perpendicular to the calibration scale.

[0018] Further, an observation window is opened on the outer side wall of the tooling box body. The observation window is a glass plate, and the reading screen of the multimeter is installed facing the observation window; a handle is fixed on each of the inner and outer side walls of the tooling box body, and the two handles are symmetrically arranged.

[0019] Further, a high-precision resistor is also arranged in the tooling box body, and the transformer is electrically connected to the power-taking socket through the high-precision resistor.

[0020] Further, two anti-fooling grooves are also arranged outside the tooling box body. The two anti-fooling grooves are respectively arranged directly below the two power-taking sockets, and the anti-fooling grooves are clamped at the connection between the power-taking socket and the power-taking port in the formation and grading cabinet.

[0021] Further, two bakelite pads are also provided on the top of the tooling box body. A waist-shaped hole is provided on each side of the bakelite pad. The bakelite pad can be locked between the two calibration scales on the top of the tooling box body with adjustable spacing through bolts and the waist-shaped holes. The two bakelite pads are respectively isolated between the two electrode plates and the tooling box body in a one-to-one correspondence.

[0022] Further, a fan is also arranged in the tooling box body. The fan is installed on the inner wall of the tooling box body, and the suction direction of the fan is directly opposite to the high-precision resistor.

[0023] Further, at least two sockets are also arranged in the tooling box body. The multimeter and the wireless router are both electrically connected to the printed circuit board separately through the sockets.

[0024] The beneficial effects of the present invention are as follows: 1. The overall internal structure of the device is compact, and the components are all arranged inside the tooling, which is convenient for manual picking and placing. When calibrating, only need to directly push the tooling box body of the device into the formation and grading equipment as a whole. While pushing, the contact power-taking socket on the inner side of the tooling box body can conveniently take power in the formation and grading equipment, and then supply power to the detection components inside the tooling box body, which is very convenient to use;

[0025] 2. The tooling box of this device is equipped with a wireless router to achieve wireless transmission of calibration data. That is, after the tooling is pushed into the device, the calibration of the tooling box can be wirelessly controlled and calibration data can be obtained through a computer outside the device, realizing convenient operation. There is no need to pull the network cable, and there is no need to reach into the deep part of the formation and grading equipment for operation, simplifying the operation steps of monitoring. There is no need to pull the network cable to transmit data, nor to pull the power cord to monitor the current. It only needs to dock the tooling box of this device in the formation capacitor device;

[0026] 3. This device has the ability to be compatible with model changes. By adjusting the distance between the two electrode plates, it can be adjusted to be compatible with different pole column distances of battery cells and can also be compatible with multiple channels (different front and rear distances of battery cells);

[0027] 4. This device can be compatible with large or small material boxes of formation and grading equipment with different sizes by adding or removing the model-changing docking box, and it can be simply snapped on through the snap pieces and bolts without the need to tighten the screws. Such a disassembly and assembly method enables convenient model change operation of the tooling box, meets the requirements of rapid model change, and can be compatible with material boxes of different sizes of formation and grading equipment without affecting the adjustment ability of the pole column distance of compatible battery cells;

[0028] 5. The tooling is equipped with a contact power-taking socket. After it enters the device in place, power can be taken for the tooling, and calibration can also be completed in the automatic line, which is very convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The present invention will be further described below with reference to the accompanying drawings in conjunction with embodiments.

[0030] Figure 1 It is a schematic structural diagram of the tooling box of the present invention;

[0031] Figure 2 It is a schematic diagram of the assembly and docking position of the tooling box and the model-changing docking box of the present invention;

[0032] Figure 3 It is a schematic structural diagram of the opening side of the model-changing docking box of the present invention;

[0033] Figure 4 It is a schematic external structural diagram of the model-changing docking box of the present invention;

[0034] Figure 5 It is a schematic side structural diagram of the tooling box of the present invention;

[0035] Figure 6 It is a schematic A-A cross-sectional view of the interior of the tooling box of the present invention;

[0036] Figure 7 It is a schematic B-B cross-sectional view of the interior of the tooling box of the present invention.

[0037] In the attached drawings, the list of components represented by each reference numeral is as follows:

[0038] 1 - Tooling box body, 11 - Calibration scale, 12 - Electrode plate, 121 - Bakelite spacer, 122 - Waist-shaped hole, 13 - Tooling guide bar, 14 - Observation window, 15 - Handle, 2 - Changeover docking box, 21 - Changeover calibration ruler, 22 - Clamping piece, 23 - Changeover guide bar, 3 - Multimeter, 31 - High-precision resistor, 32 - Wireless router, 33 - Power take-off socket, 34 - Fan, 35 - Socket, 4 - Printed circuit board, 41 - Transformer, 42 - Anti-fooling groove. Detailed implementation mode

[0039] Please refer to Figures 1 to 7 As shown, the present invention provides a technical solution: a core precision calibration tooling for a formation and grading equipment, comprising:

[0040] The tooling box body 1 is a fully enclosed ventilated hollow box body, and two calibration scales 11 and two electrode plates 12 are respectively arranged on the top thereof. The two calibration scales 11 are arranged in parallel on the opposite side edges of the top of the tooling box body 1, and both sides of each electrode plate 12 are erected and locked between the two calibration scales 11 on both sides through bolts and can be adjusted;

[0041] Two tooling guide bars 13 are symmetrically installed on the tooling box body 1, and the tooling box body 1 is slidably arranged in the formation and grading cabinet through the tooling guide bars 13 in a separable manner;

[0042] The multimeter 3, the wireless router 32 and the printed circuit board 4 are all installed in the tooling box body 1;

[0043] The power take-off socket 33 is fixedly arranged on the inner side wall of the tooling box body 1 and is electrically connected to the power take-off port in the formation and grading cabinet in a pluggable manner;

[0044] The printed circuit board 4 is electrically connected to the power take-off socket 33 through the transformer 41, and the multimeter 3 and the wireless router 32 are both electrically connected to the external circuit of the printed circuit board 4. When detecting a formation and grading equipment for a square core, it can be quickly plugged and connected. Only by aligning this device with the power take-off port of the formation and grading equipment and pushing it in, the power taking and data connection of the devices of the equipment can be completed. The installation is very convenient. Moreover, the wireless router 32 and the multimeter 3 are integrated inside this device, making the data detection of this device for the formation and grading equipment more convenient. Only by pushing this device into the formation and grading equipment for docking is required. And all the detection devices of this device are cooperatively connected and installed in a whole protective box body, the circuit is more regular, and the circuit is not exposed outside, and it is safer to use.

[0045] Among them, it also includes a changeover docking box 2, which is a hollow box with an opening on one side and can be detachably clamped and covered on one side wall of the tooling box body 1 with tooling guide strips 13;

[0046] There are two changeover calibration rulers 21, which are arranged in parallel on the top of the changeover docking box 2 and are respectively in a straight line docking with the two calibration scale rulers 11 on the top of the tooling box body 1;

[0047] The changeover guide strip 23 is fixedly arranged on the outer wall of one side parallel to the opening side of the changeover docking box 2 and is arranged in parallel with the two tooling guide strips 13, and can accurately calibrate the position of the electrode plate 12 for convenient and accurate measurement;

[0048] On the opening side of the changeover docking box 2, there are a plurality of clamping pieces 22. Two communicating circular holes that are smaller at the top and larger at the bottom are opened on the clamping pieces 22. The changeover docking box 2 can be detachably clamped with the bolts on the side wall of the tooling box body 1 through the clamping pieces 22. Such clamping pieces 22 can insert the bolts into the clamping pieces 22 from the larger circular hole at the bottom, and then lower the changeover docking box 2 so that the smaller circular hole is stuck on the bolt and cannot be separated, thus clamping the changeover docking box 2 with the tooling box body 1. The installation is very convenient. When separating, just lift the changeover docking box 2 and pull it out;

[0049] The two electrode plates 12 are parallel to each other; the two tooling guide strips 13 are arranged in parallel on the vertical side wall of the tooling box body 1, and the two electrode plates 12 are perpendicular to the calibration scale ruler 11, which is convenient for accurately installing the electrode plates 12, so as to accurately match the distance between the cell poles and perform accurate data measurement;

[0050] An observation window 14 is opened on the outer side wall of the tooling box body 1. The observation window 14 is a glass plate, and the reading screen of the multimeter 3 is installed facing the observation window 14; on the inner and outer side walls of the tooling box body 1, a handle 15 is fixed respectively. The two handles 15 are symmetrically arranged, which is convenient for lifting and placing this device;

[0051] A high-precision resistor 31 is also arranged in the tooling box body 1. The transformer 41 is electrically connected to the power-taking socket 33 through the high-precision resistor, which can make this device have a precise voltage so that the measured data can be more accurate;

[0052] Two anti-fooling grooves 42 are also arranged outside the tooling box body 1. The two anti-fooling grooves 42 are respectively arranged directly below the two power-taking sockets 33. The anti-fooling grooves 42 are clamped at the connection between the power-taking socket 33 and the power-taking port in the formation and grading cabinet, which can ensure that the power-taking socket 33 is connected more accurately and stably;

[0053] On the top of the tooling box body 1, there are also two bakelite pads 121. On both sides of each bakelite pad 121, there is a waist-shaped hole 122. The bakelite pads 121 are locked between two calibration scales 11 on the top of the tooling box body 1 through bolts and the waist-shaped holes 122 with adjustable spacing. The two bakelite pads 121 are respectively isolated between the two electrode plates 12 and the tooling box body 1 in a one-to-one correspondence. By this isolation method, the power connection can be more stable, and more accurate testing can be carried out. After isolation, it is not affected by external interference.

[0054] A fan 34 is also arranged inside the tooling box body 1. The fan 34 is installed on the inner wall of the tooling box body 1, and the suction direction of the fan 34 is directly opposite to the high-precision resistor 31, facilitating the heat dissipation of the components that are prone to heat generation.

[0055] At least two sockets 35 are also arranged inside the tooling box body 1. The multimeter 3 and the wireless router 32 are both electrically connected to the printed circuit board 4 separately through the sockets 35. By connecting separately, it is more convenient to install and replace component models.

[0056] In a specific embodiment of the present invention:

[0057] By providing a core precision calibration tooling for a formation and grading device in the embodiment of the present invention, the technical problems solved by the present invention are as follows: 1. When detecting the cores inside the existing formation and grading cabinet, a panel-type circuit is used. The formation and grading cabinet is connected to this panel through a network cable, and then connected to external computers and current detection devices, etc. It requires the detection personnel to reach into the formation and grading cabinet to accurately connect the lines, and the operation is very cumbersome; 2. In this connection method, the connection to the computer is also very troublesome. It is necessary to use a network cable to connect data, and when connecting devices such as multimeters, it is also very troublesome and requires one-by-one line connection; 3. In this connection and installation method, many lines are exposed outside, which will pose a safety hazard, and when connecting the lines, the staff is not safe either.

[0058] The achieved technical effects are as follows: 1. The overall internal structure of this device is compact, and the components are all arranged inside the tooling box body 1, which is convenient for manual picking and placing. When calibrating, only need to directly push the tooling box body 1 of this device into the formation and grading device as a whole. While pushing, the contact power-taking socket 33 on the inner side of the tooling box body 1 can conveniently take power in the formation and grading device, and then supply power to the detection components inside the tooling box body 1, which is very convenient to use;

[0059] 2. The tooling box body 1 of this device is built-in with a wireless router 32 to achieve wireless transmission of calibration data. That is, for the calibration operation, only need to push the tooling box body 1 along the tooling guide bar 13 into the device, then the calibration of the tooling box body 1 and the acquisition of calibration data can be wirelessly controlled by a computer outside the device, realizing convenient operation. There is no need to tow network cables, and there is no need to reach into the deep part of the formation and grading equipment for operation, simplifying the operation steps of monitoring. There is no need to tow network cables to transmit data, nor to tow power cables to monitor current. Just dock the tooling box body 1 of this device inside the formation capacitor device. The overall appearance has no wire routing and no obvious cables exposed outside, improving safety such as leakage protection;

[0060] 3. This device has the ability to be compatible with model changes. By adjusting the distance between the two electrode plates 12, and this adjustment of the distance can be accurately calibrated through the calibration scale 11, ensuring the accurate distance between the two electrode plates 12, capable of adjusting and being compatible with different cell pole column distances, and also being able to be compatible with the front and back distances of different cells in multiple channels;

[0061] 4. This device can be compatible with large or small material boxes of different sizes of formation and grading equipment by adding or removing the model-changing docking box 2, and it can be simply snapped on through the clamping piece 22 and the bolt, without the need to tighten screws. Such a disassembly and assembly method enables convenient model-changing operation of the tooling box body 1, meeting the requirements of rapid model change, and being able to be compatible with material boxes of different sizes of formation and grading equipment. Moreover, the model-changing docking box 2 is also equipped with a model-changing calibration scale 21 and a model-changing guide bar 23, which does not affect the ability to adjust the cell pole column distance and does not affect the push-pull sliding in and out of this device inside the formation capacitor device;

[0062] 5. The tooling is equipped with a contact power-taking socket 33. After entering the device in place, power can be taken for the internal components of the tooling box body 1, and calibration can also be completed in the automatic line, which is very convenient to use. The tooling is equipped with a handle 15, and the overall punching is used for weight reduction, and the lifting, placing and installation operations can be completed by one person.

[0063] The overall idea of the technical solution in the embodiment of the present invention to solve the above problems is as follows:

[0064] To better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the specification drawings and specific implementation manners.

[0065] When this invention is manufactured, a sheet metal welded structure is used, and the metal material has multiple ventilation holes on each side, which is convenient for heat dissipation, and each surface is locked by bolts;

[0066] The shape of the tooling box 1 needs to be the same as the shape and size of the cartridge in the formation and grading equipment. Currently, there are two sizes of cartridges in the formation and grading equipment. However, there are various different sizes for the pole pitch of the battery cells in the formation and grading equipment. The overall external shape of the tooling box 1 of this device is the same as the smallest cartridge in the formation and grading equipment. After the tooling box 1 is assembled with the conversion docking box 2, it will have the same shape as the large cartridge;

[0067] First, install tooling guide bars 13 on the left and right sides in the sliding direction of the tooling box 1 pushed into the formation and grading equipment. One tooling guide bar 13 is installed on each side, facilitating the sliding in and out of the tooling box 1 in the formation and grading equipment. The conversion docking box 2 is also a metal box body, with one side open and the other side closed. A clamping piece 22 is provided on the open side, and a conversion guide bar 23 is installed on the outside of the side opposite to the open side. This is to ensure that after the tooling box 1 is docked with the conversion docking box 2, the open side of the conversion docking box 2 covers the outside of the tooling box 1, and the conversion guide bar 23 on the closed side opposite to the open side of the conversion docking box 2 is for sliding together with the tooling box 1. Because the large cartridge bin of the formation and grading equipment cannot be fully erected with only the tooling box 1, the conversion docking box 2 needs to be clamped to the tooling box 1, and then it can slide in the large cartridge bin of the formation and grading equipment through the cooperation of the tooling guide bar 13 and the conversion guide bar 23;

[0068] Fix and install a handle 15 on the vertical side walls of the inner and outer sides of the tooling box 1, which is convenient for lifting the tooling box 1 and also for pushing and pulling the tooling box 1. Then, install two calibration scale bars 11 on the top of the tooling box 1. The two calibration scale bars 11 are as Figure 1 shown. They need to be fixed on the top of the tooling box 1 and installed along the front and rear sides of the top of the tooling box 1. At the same time, the two calibration scale bars 11 must be horizontal and parallel to each other. Similarly, the conversion calibration scale 21 is also installed on the top of the conversion docking box 2, and the conversion calibration scale 21 is a straight extension of the calibration scale bar 11, facilitating the precise adjustment of the position of the electrode plate 12 on the top of the conversion docking box 2.

[0069] Two electrode plates 12 are also required as the positive and negative contacts for the battery cell poles. Each electrode plate 12 is fixedly mounted on a bakelite spacer 121 for insulation operation. A waist-shaped hole 122 is opened on the bakelite spacer 121 for calibrating and adjusting the installation position on the calibration scale bars 11 on both sides of the top of the tooling box 1.

[0070] As Figure 1 shown, an observation window 14 needs to be installed on the outside of the tooling box 1, facilitating the observation and reading of the data of the multimeter 3 after the tooling box 1 slides into the formation and grading equipment and is in place.

[0071] On the outer side of the vertical side wall inside the work box 1, an anti-fooling groove 42 is installed, and a power-taking socket 33 is installed on the anti-fooling groove 42. It is necessary to ensure that the power-taking socket 33 can be position-matched with the power-taking port of the formation and grading equipment for accurate docking;

[0072] Then, various components need to be installed inside the work box 1. The multimeter 3, high-precision resistor 31, wireless router 32, fan 34, two sockets 35, printed circuit board 4, and transformer 41 all need to be placed inside the work box 1. The installation positions and cooperation relationships are as Figure 6 and Figure 7 shown, Figure 6 and Figure 7 In the left side is the inner side of the work box 1, and the right side is the outer side of the work box 1;

[0073] The fan 34 is installed on the upper layer of the work box 1. The fan 34 is arranged close to the power-taking socket 33, and the fan 34 cools the high-precision resistor 31 directly. The multimeter 3 occupies a large space and is placed vertically in the central position of the work box 1. The reading screen is arranged facing the observation window 14. The wireless router 32 only needs not to block the multimeter 3. The printed circuit board 4, that is, the PCB board, needs to be installed at the bottom of the work box 1 and connected to the transformer 41. The internal circuit connection is through the high-precision resistor 31 connected to the power-taking socket 33, and through the power-taking socket 33 in contact with the power-taking port of the formation and grading equipment. The power-taking socket 33, high-precision resistor 31, and transformer 41 are connected in sequence. The printed circuit board 4 is connected to the transformer 41. The two sockets 35 are connected to the printed circuit board 4. At the same time, the fan 34 is also connected to the printed circuit board 4. The multimeter 3 and the wireless router 32 are powered by connecting to the socket 35, which is convenient for changing the models of components and is very easy to replace.

[0074] When the present invention is in use, first measure the distance between the electrode columns of the battery cells in the formation and grading equipment, and adjust the distance between the electrode plates 12 according to this distance. The progress is adjusted through the calibration scale 12. Then lock the bakelite cushion block 121 on the top of the tooling box body 1. In order to match the size of the material box inside the formation and grading equipment, a conversion docking box 2 or a disassembled conversion docking box 2 can be installed on this device. The operator lifts the precision tooling through the front and rear handles 15, and through the highly precise guide bars 13 on both sides of the tooling box body 1, which cooperate with the guide grooves in the formation and grading equipment, and push it into the formation and grading equipment. The contact power-taking socket 33 on the rear side of the tooling box body 1 is connected to the power-taking port in the formation and grading equipment for power supply. Then this device can start running for calibration. The wireless router 32 in the tooling box body 1 performs feedback power calibration. The electrode plates 12 are used to make contact with the electrode columns of the battery cells in the formation and grading equipment to take power, so as to calibrate the power. The power-taking method is to take power from the formation and grading equipment through the power-taking socket 33, and then supply power to the multimeter 3, wireless router 32 and fan 34 through the high-precision resistor 31, transformer 41, printed circuit board 4 and transformer 41 to make these devices operate normally. The electrode plates 12 are used to monitor the data of the battery cells, and then the data is transmitted to the laptop computer controlled by the operator through the wireless router 32 for data reading and sorting, and the detection work is completed.

[0075] The outer side of the tooling box body 1 of this device is the side that is still exposed outside after being assembled into the formation and grading equipment, that is, the side with the observation window 14, and opposite to the observation window 14, the side with the power-taking socket 33 is the inner side of the tooling box body 1.

[0076] Although the specific implementation manners of the present invention have been described above, those skilled in the art of this technology should understand that the specific embodiments we described are illustrative rather than used to limit the scope of the present invention. Equivalent modifications and changes made by those skilled in the art in accordance with the spirit of the present invention should be covered within the scope protected by the claims of the present invention.

Claims

1. A cell precision calibration tool for a formation and grading equipment, characterized in that Including: A tooling box body (1), which is a fully enclosed ventilated hollow box body. Two calibration scales (11) and two electrode plates (12) are respectively arranged on the top. The two calibration scales (11) are arranged in parallel on the opposite side edges of the top of the tooling box body (1). Both sides of each electrode plate (12) are mounted and locked between the two calibration scales (11) on both sides through bolts and can be adjusted; Two tooling guide strips (13) are symmetrically installed on the tooling box body (1). The tooling box body (1) is slidably arranged in the charge and discharge cabinet through the tooling guide strips (13) and can be separated; A multimeter (3), a wireless router (32) and a printed circuit board (4) are all installed in the tooling box body (1); A power take-off socket (33) is fixed on the inner side wall of the tooling box body (1) and is in pluggable electrical connection with the power take-off port in the charge and discharge cabinet; The printed circuit board (4) is electrically connected to the power take-off socket (33) through a transformer (41). The multimeter (3) and the wireless router (32) are both electrically connected to the external circuit of the printed circuit board (4); It also includes a conversion docking box (2), which is a hollow box body with an opening on one side and can be detachably clamped and covered on the side wall of the tooling box body (1) with tooling guide strips (13); There are two conversion calibration scales (21), which are arranged in parallel on the top of the conversion docking box (2) and are respectively in a straight line docking with the two calibration scales (11) on the top of the tooling box body (1); A plurality of clamping pieces (22) are arranged on the opening side of the conversion docking box (2). Two communicating circular holes with a smaller upper part and a larger lower part are opened on the clamping pieces (22). The conversion docking box (2) is detachably clamped with the bolts on the side wall of the tooling box body (1) through the clamping pieces (22); A conversion guide strip (23) is fixed on the outer wall of the side parallel and opposite to the opening side of the conversion docking box (2) and is arranged in parallel with the two tooling guide strips (13); The two electrode plates (12) are parallel to each other; the two tooling guide strips (13) are arranged in parallel on the vertical side wall of the tooling box body (1), and the two electrode plates (12) are perpendicular to the calibration scale (11).

2. The cell precision calibration tooling for formation and grading equipment according to claim 1, characterized in that: An observation window (14) is opened on the outer side wall of the tooling box body (1). The observation window (14) is a glass plate. The reading screen of the multimeter (3) is installed facing the observation window (14); a handle (15) is fixed on each of the inner and outer side walls of the tooling box body (1), and the two handles (15) are symmetrically arranged.

3. A cell accuracy calibration tooling for a formation and capacitance testing device according to claim 1, characterized in that: A high-precision resistor (31) is also arranged in the tooling box body (1). The transformer (41) is electrically connected to the power take-off socket (33) through the high-precision resistor.

4. A cell precision calibration tool for a formation and capacitance testing device according to claim 1, characterized in that: Two anti-fooling grooves (42) are also arranged outside the tooling box body (1). The two anti-fooling grooves (42) are respectively arranged directly below the two power take-off sockets (33). The anti-fooling grooves (42) are clamped at the connection between the power take-off socket (33) and the power take-off port in the charge and discharge cabinet.

5. A cell precision calibration tool for a formation and grading device according to claim 1, characterized in that: There are also two bakelite pads (121) provided on the top of the tooling box body (1). One waist-shaped hole (122) is provided on each side of the bakelite pad (121). The bakelite pad (121) is locked between two calibration scales (11) on the top of the tooling box body (1) with adjustable spacing through bolts and the waist-shaped holes (122). The two bakelite pads (121) are respectively isolated between the two electrode plates (12) and the tooling box body (1) in a one-to-one correspondence.

6. A cell accuracy calibration tool for a formation and grading device according to claim 1, characterized in that: A fan (34) is also provided in the tooling box body (1). The fan (34) is installed on the inner wall of the tooling box body (1), and the air suction direction of the fan (34) is directly opposite to the high-precision resistor (31).

7. A cell precision calibration tool for a formation and grading device according to claim 1, characterized in that: At least two sockets (35) are also provided in the tooling box body (1). The multimeter (3) and the wireless router (32) are both electrically connected to the printed circuit board (4) separately through the sockets (35).

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