Wiring board and current testing device

Abstract

The invention relates to the technical field of battery cell testing, and provides a wiring board and a current testing device, and the wiring board comprises a board main body, a conductive patch and a sliding block. Wherein a main sliding groove is formed in the plate main body, and a straight line passing through the two tabs is parallel to the length direction of the main sliding groove; the conductive patches comprise the positive electrode patch and the negative electrode patch, the positive electrode patch and the negative electrode patch are arranged on the two opposite side walls of the main sliding groove in the width direction respectively, and the conductive patches are electrified. Two sliding blocks are inserted into each main sliding groove and used for being in one-to-one correspondence with the two tabs, one sliding block can be electrically connected with the positive electrode patch, the other sliding block can be electrically connected with the negative electrode patch, the two sliding blocks can be close to or away from each other in the length direction of the main sliding grooves, and probe modules used for being in contact with the tabs are installed on the sliding blocks; the probe module is electrically connected with the conductive patch through the slide block. Therefore, the current testing device has higher compatibility with different types of battery cells, and the wiring layout of the probe module is simplified.

Description

Technical Field

[0001] The present invention relates to the technical field of battery cell testing, and in particular to a wiring board and a current testing device. Background Art

[0002] The battery cell is the core component of the battery, and it needs to be tested for current when it leaves the factory. The test device contacts the tabs of the battery cell through the probe module to form a circuit connection. However, with the increase in the use scenarios of battery cells, their structural characteristics are not the same in different types of battery cells, that is, there is a difference in the spacing between the tabs of different types of battery cells. When performing current tests on battery cells of different specifications, it is necessary to move the position of the test probe so that the test probe is aligned with the tab in the vertical direction. This will cause the wire to move with it, and it is necessary to leave a surplus of wire, which is not conducive to wiring.

[0003] Therefore, there is an urgent need for a wiring board and a current testing device to solve the above technical problems. Summary of the invention

[0004] The purpose of the present invention is to provide a wiring board and a current testing device, which can have higher compatibility with different types of battery cells and simplify the wiring layout of the probe module.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] The wiring board is suitable for a current test device to perform a current test on a battery cell. The battery cell includes two tabs. The wiring board includes:

[0007] A plate body, wherein the plate body is provided with a main chute, and a straight line passing through the two tabs is parallel to the length direction of the main chute;

[0008] Conductive patches, the conductive patches include positive patches and negative patches, the positive patches and the negative patches are respectively arranged on two opposite side walls of the main chute in the width direction, and current flows through the conductive patches;

[0009] Sliders, two of the above-mentioned slide blocks are inserted in each of the above-mentioned main slide grooves, which are used to correspond to the two above-mentioned pole ears one by one, and one of the above-mentioned slide blocks can be electrically connected to the above-mentioned positive electrode patch, and the other above-mentioned slide block can be electrically connected to the above-mentioned negative electrode patch. The two above-mentioned slide blocks can approach or move away from each other along the length direction of the above-mentioned main slide grooves. The above-mentioned slide blocks are all equipped with probe modules for contacting the above-mentioned pole ears, and the above-mentioned probe modules are electrically connected to the above-mentioned conductive patches through the above-mentioned slide blocks.

[0010] As a preferred technical solution for the wiring board, the board body is provided with a plurality of the main slide grooves, the current testing device can accommodate a plurality of the battery cells, and each of the battery cells can correspond to one of the main slide grooves.

[0011] As a preferred technical solution of the wiring board, a plurality of the main chutes are arranged in parallel.

[0012] As a preferred technical solution of the wiring board, the conductive patches of the plurality of main slideways are arranged in parallel.

[0013] As a preferred technical solution for the wiring board, the board body is further provided with a secondary slide groove, each of the main slide grooves is provided with at least one secondary slide groove, the secondary slide grooves are arranged parallel to the main slide grooves, and the slider can be at least partially inserted into the secondary slide grooves and can slide in the secondary slide grooves.

[0014] As a preferred technical solution for the above-mentioned wiring board, the above-mentioned slider includes a block body and a threaded fastener, the above-mentioned probe module is installed on the above-mentioned block body, a limiting protrusion is arranged in the above-mentioned secondary slide groove, the above-mentioned threaded fastener is partially inserted in the above-mentioned secondary slide groove and is threadedly connected with the above-mentioned block body, and the above-mentioned limiting protrusion can be clamped between the above-mentioned block body and the nut of the above-mentioned threaded fastener.

[0015] As a preferred technical solution of the wiring board, a terminal is provided on the side of the slider facing away from the battery cell, and the probe module includes a probe and a sensor. The probe is electrically connected to the terminal, and the sensor is electrically connected to the conductive patch.

[0016] As a preferred technical solution of the wiring board, it also includes a driving member, and the driving member is used to drive the slider to move along the length direction of the main slide groove.

[0017] A current testing device comprises the above-mentioned wiring board.

[0018] As a preferred technical solution of the above-mentioned current testing device, it also includes a base, the above-mentioned base is provided with an installation position, and the same installation position can accommodate one of the above-mentioned battery cells. The above-mentioned wiring board and the above-mentioned base can move relatively along the depth direction of the above-mentioned main slide groove, approaching or moving away from the above-mentioned battery cell.

[0019] Beneficial effects of the present invention:

[0020] The present invention provides a wiring board and a current testing device for a battery cell to perform a current test. The battery cell includes two pole ears, and the wiring board includes a board body, a conductive patch and a slider. The board body is provided with a main slide, and a straight line passing through the two pole ears is parallel to the length direction of the main slide; the conductive patch includes a positive electrode patch and a negative electrode patch, and the positive electrode patch and the negative electrode patch are respectively arranged on the opposite side walls of the main slide in the width direction, and the conductive patch is passed through the current; two sliders are inserted in each main slide, which are used to correspond to the two pole ears one by one, and one of the sliders can be electrically connected to the positive electrode patch, and the other slider can be electrically connected to the negative electrode patch. The two sliders can approach or move away from each other along the length direction of the main slide, and the sliders are both equipped with probe modules for contacting the pole ears, and the probe modules are electrically connected to the conductive patches through the sliders.

[0021] Exemplarily, when conducting a current test on a battery cell, the spacing between the two sliders in the main slide is adjusted according to the structural features of the battery cell being tested, that is, the spacing between the two pole ears of the battery cell, so that the probe module carried on the slider can contact the pole ears one by one, and because the main slide is provided with a positive electrode patch on one of its side walls in the width direction, and a negative electrode patch is provided on the side wall opposite thereto, current is passed through both the positive electrode patch and the negative electrode patch, and the slider is a conductor, and the probe module can be electrically connected to the positive electrode patch or the negative electrode patch through the slider. Since the movement direction of the slider relative to the plate body is the length direction of the main slide, during the movement, both sides of the slider can always fit with the positive electrode patch or the negative electrode patch and maintain electrical connection, that is, the probe module can remain energized at any position in the main slide, so that current testing can be performed for various types of battery cells, simplifying the wiring layout. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0023] Figure 1 is a structural schematic diagram of a current testing device provided by an embodiment of the present invention;

[0024] Figure 2 is a top view of a current testing device provided by an embodiment of the present invention;

[0025] Figure 3 is a schematic diagram of the structure of a wiring board provided in an embodiment of the present invention;

[0026] Figure 4 is a side view of a wiring board provided by an embodiment of the present invention;

[0027] Figure 5 is a top view of a wiring board provided by an embodiment of the present invention;

[0028] Figure 6 yes Figure 5 Sectional view at AA in the middle;

[0029] Figure 7 yes Figure 6 A partial enlarged view of point B in the middle.

[0030] In the figure:

[0031] X, length direction; Y, width direction; Z, depth direction;

[0032] 1. Wiring board; 2. Battery cell; 3. Base; 4. Probe module;

[0033] 100, plate body; 110, main slide; 120, auxiliary slide; 121, limiting protrusion; 122, first clamping gap; 123, second clamping gap;

[0034] 210, positive electrode patch; 220, negative electrode patch;

[0035] 300, slider; 310, block body; 320, terminal. DETAILED DESCRIPTION

[0036] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0037] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" 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 a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0039] In the description of this embodiment, the terms "upper", "lower", "right", etc., directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0040] like Figures 3 to 7 As shown, the present invention provides a wiring board 1, which is suitable for a current testing device to perform a current test on a battery cell 2. The battery cell 2 includes two tabs. The wiring board 1 includes a board body 100, a conductive patch and a slider 300. Among them, the board body 100 is provided with a main slide 110, and the straight line passing through the two pole ears is parallel to the length direction X of the main slide 110; the conductive patch includes a positive patch 210 and a negative patch 220, and the positive patch 210 and the negative patch 220 are respectively arranged on the opposite side walls of the main slide 110 in the width direction Y, and the conductive patch is passed with current; two sliders 300 are inserted in each main slide 110, which are used to correspond to the two pole ears one by one, and one of the sliders 300 can be electrically connected to the positive patch 210, and the other slider 300 can be electrically connected to the negative patch 220, and the two sliders 300 can approach or move away from each other along the length direction X of the main slide 110, and the sliders 300 are both equipped with probe modules 4 for contacting the pole ears, and the probe module 4 is electrically connected to the conductive patch through the slider 300.

[0041] Exemplarily, when performing a current test on the battery cell 2, the distance between the two sliders 300 in the main slide 110 is adjusted according to the structural features of the battery cell 2 being tested, that is, the distance between the two pole ears of the battery cell 2, so that the probe module 4 carried on the slider 300 can contact the pole ears one by one, and since the main slide 110 is provided with a positive electrode patch 210 on one of the side walls in the width direction Y and a negative electrode patch 220 is provided on the opposite side wall, current flows through the positive electrode patch 210 and the negative electrode patch 220, the slider 300 is a conductor, and the probe module 4 can be electrically connected to the positive electrode patch 210 or the negative electrode patch 220 through the slider 300. Since the movement direction of the slider 300 relative to the board body 100 is the length direction X of the main slide groove 110, during the movement, the two sides of the slider 300 can always fit with the positive electrode patch 210 or the negative electrode patch 220 to maintain electrical connection, that is, the probe module 4 can remain energized at any position of the main slide groove 110. In this way, current testing can be performed for various types of battery cells 2, simplifying the wiring layout.

[0042] Exemplarily, in the projection of the width direction Y of the main chute 110 , the positive electrode patch 210 and the negative electrode patch 220 do not overlap, and are spaced apart in the length direction X of the main chute 110 .

[0043] Exemplarily, in the width direction Y of the main sliding groove 110 , one side wall of the sliding block 300 is conductive, and the other side is provided with an insulating layer and is non-conductive.

[0044] Optionally, the board body 100 is provided with a plurality of main slots 110, and the current testing device can accommodate a plurality of battery cells 2, and each battery cell 2 can correspond to one of the main slots 110. Exemplarily, in this embodiment, the current testing device accommodates four battery cells 2, and the board body 100 is provided with four main slots 110, and the four battery cells 2 correspond to the four main slots 110 one by one. The two sliders 300 in each main slot 110 can carry the probe module 4 to adjust the relative position according to the distance between the two pole ears of the corresponding battery cell 2, so that the current test of multiple battery cells 2 can be performed at the same time, and the position of the probe module 4 can be adjusted according to different models of battery cells 2, thereby expanding the versatility of the current testing device.

[0045] Optionally, a plurality of main slide grooves 110 are arranged in parallel.

[0046] Exemplarily, the plurality of main slide grooves 110 are arranged in sequence along the width direction Y of the main slide grooves 110 , so that the layout of the main slide grooves 110 on the board body 100 is relatively compact.

[0047] Optionally, the conductive patches of multiple main chutes 110 are arranged in parallel. In this way, the multiple main chutes 110 do not affect each other, and when the probe modules 4 carried by the sliders 300 in one part of the main chutes 110 are connected to the tabs of the battery cell 2 to perform current testing, the probe modules 4 in the other part of the main chutes 110 can be in an idle state.

[0048] Optionally, the board body 100 is also provided with a secondary slide groove 120, each main slide groove 110 is configured with at least one secondary slide groove 120, the secondary slide groove 120 is arranged parallel to the main slide groove 110, and the slider 300 can be at least partially inserted into the secondary slide groove 120 and can slide in the secondary slide groove 120.

[0049] Exemplarily, in this embodiment, the main slide groove 110 is respectively provided with a secondary slide groove 120 on both sides of its width direction Y, and the slider 300 is T-shaped, including a mounting portion and two limiting portions, the two limiting portions are respectively located on the opposite sides of the mounting portion in the width direction Y of the main slide groove 110 and are fixed to the mounting portion, the mounting portion is used to install the probe module 4, the probe module 4 and / or the mounting portion are inserted in the main slide groove 110, and part of the limiting portion is inserted in the secondary slide groove 120. Since the mounting portion and the limiting portion are relatively fixed, the relative limitation of the slider 300 and the plate body 100 can be achieved, and the movement trajectory of the slider 300 along the length direction X of the main slide groove 110 can be standardized.

[0050] Optionally, the slider 300 includes a block body 310 and a threaded fastener, the probe module 4 is installed on the block body 310, a limiting protrusion 121 is provided in the secondary slide groove 120, the threaded fastener portion is inserted in the secondary slide groove 120 and is threadedly connected to the block body 310, and the limiting protrusion 121 can be clamped between the block body 310 and the nut of the threaded fastener.

[0051] Exemplarily, the auxiliary slot 120 includes a first slit 122 and a second slit 123 along its depth direction Z, wherein the first slit 122 is on the side of the second slit 123 facing away from the battery cell 2, and in the width direction Y of the auxiliary slot 120, the gap of the first slit 122 is smaller than the gap of the second slit 123, and a contact surface, i.e., a limiting protrusion 121, is formed between the first slit 122 and the second slit 123; a nut is provided at one axial end of the threaded fastener, and the threaded fastener can be inserted into the first slit 122 and the second slit 123 at the same time, and the nut can abut against the abutment surface along the depth direction Z of the auxiliary slot 120, i.e., abut against the limiting protrusion 121, and the other end of the threaded fastener can be inserted into the block body 310 and threadedly connected to the block body 310. In this way, when it is necessary to adjust the relative position between the sliders 300 according to the tab spacing of the battery cell 2, the threaded fastener is loosened to separate the nut from the limiting protrusion 121; after the slider 300 moves to the specified position, the threaded fastener is tightened to make the limiting protrusion 121 abut against the nut, thereby increasing the friction force by increasing the pressure, thereby locking the relative position of the slider 300 and the plate body 100.

[0052] Optionally, a terminal 320 is provided on the side of the slider 300 facing away from the battery cell 2, and the probe module 4 includes a probe and a sensor, the probe is electrically connected to the terminal 320, and the sensor is electrically connected to the conductive patch. Since the probe requires high voltage current and the sensor requires low voltage current, the circuits of the probe and the sensor are distinguished, which makes electricity use safer and can meet the electricity requirements of both.

[0053] Optionally, the wiring board 1 further includes a driving member, and the driving member is used to drive the slider 300 to move along the length direction X of the main slide groove 110.

[0054] Exemplarily, the driving member is a motor, an output end of which is connected to a threaded rod, the threaded rod is threadedly connected to the slider 300, the driving member can drive the threaded rod to rotate, and the slider 300 can move along the axial direction of the threaded rod.

[0055] In other embodiments, the driving member may also be an electric push rod.

[0056] like Figure 1 and Figure 2 As shown, a current testing device is also provided, including the wiring board 1 mentioned above.

[0057] Optionally, the current testing device further includes a base 3 , which has an installation position, and the same installation position can accommodate a battery cell 2 , and the wiring board 1 and the base 3 can move relative to each other along the depth direction Z of the main slide groove 110 , approaching or moving away from the battery cell 2 .

[0058] Exemplarily, the base 3 is used to accommodate and fix the battery cell 2, and the pole piece of the battery cell 2 is exposed outside the base 3. The wiring board 1 can move relative to the base 3 along the depth direction Z of the main slide groove 110 to switch between its first position and the second position. When in the first position, the distance between the wiring board 1 and the base 3 is large, which is convenient for disassembly and assembly of the battery cell 2; after the battery cell 2 and the base 3 are fixed; the wiring board 1 moves from the first position to the second position, gradually approaching the base 3, until the probe module 4 contacts the pole ear of the battery cell 2.

[0059] In addition, the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A wiring board, suitable for a current testing device, for performing a current test on a battery cell (2), wherein the battery cell (2) comprises two tabs, and is characterized in that: The wiring board comprises: A plate body (100), wherein the plate body (100) is provided with a main slide groove (110), and a straight line passing through the two tabs is parallel to a length direction (X) of the main slide groove (110); Conductive patches, the conductive patches comprising a positive electrode patch (210) and a negative electrode patch (220), the positive electrode patch (210) and the negative electrode patch (220) being respectively arranged on two opposite side walls of the main chute (110) in the width direction (Y), and current is passed through the conductive patches; Slide blocks (300), two of the slide blocks (300) are inserted into each of the main slide grooves (110), and are used to correspond to the two pole ears one by one, and one of the slide blocks (300) can be electrically connected to the positive electrode patch (210), and the other slide block (300) can be electrically connected to the negative electrode patch (220), and the two slide blocks (300) can approach or move away from each other along the length direction (X) of the main slide groove (110), and the slide blocks (300) are both equipped with probe modules (4) for contacting the pole ears, and the probe modules (4) are electrically connected to the conductive patch through the slide blocks (300).

2. The wiring board according to claim 1, characterized in that: The board body (100) is provided with a plurality of main slide grooves (110), the current testing device can accommodate a plurality of battery cells (2), and each battery cell (2) can correspond to one of the main slide grooves (110).

3. The wiring board according to claim 2, characterized in that: A plurality of main slide grooves (110) are arranged in parallel.

4. The wiring board according to claim 2, characterized in that: The conductive patches of the plurality of main slideways (110) are arranged in parallel.

5. The wiring board according to claim 1, characterized in that: The plate body (100) is also provided with a secondary slide groove (120), each of the main slide grooves (110) is configured with at least one secondary slide groove (120), the secondary slide grooves (120) are arranged parallel to the main slide grooves (110), and the slider (300) can be at least partially inserted into the secondary slide groove (120) and can slide in the secondary slide groove (120).

6. The wiring board according to claim 5, characterized in that: The slider (300) includes a block body (310) and a threaded fastener, the probe module (4) is installed on the block body (310), a limiting protrusion (121) is arranged in the auxiliary slide groove (120), the threaded fastener is partially inserted in the auxiliary slide groove (120) and is threadedly connected to the block body (310), and the limiting protrusion (121) can be clamped between the block body (310) and the nut of the threaded fastener.

7. The wiring board according to claim 1, characterized in that: A terminal (320) is provided on a side of the slider (300) facing away from the battery cell (2); the probe module (4) comprises a probe and a sensor; the probe is electrically connected to the terminal (320); and the sensor is electrically connected to the conductive patch.

8. The wiring board according to claim 1, characterized in that: It also includes a driving member, which is used to drive the sliding block (300) to move along the length direction (X) of the main sliding groove (110).

9. The current testing device is characterized in that: A wiring board (1) comprising any one of claims 1 to 8.

10. The current testing device according to claim 9, characterized in that: The invention also comprises a base (3), wherein the base (3) is provided with a mounting position, wherein one of the battery cells (2) can be accommodated in the same mounting position, and the wiring board (1) and the base (3) can move relative to each other along the depth direction (Z) of the main slide groove (110), and can move closer to or farther away from the battery cell (2).

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