Battery test fixture and battery test frame

Abstract

The utility model provides a battery test fixture and a battery test frame, the battery test fixture comprises a bottom plate, a first support structure and a second support structure, the first support structure and the second support structure are both arranged on the bottom plate, the first support structure comprises a first support plate, and the second support structure comprises a second support plate. The first supporting plate and the second supporting plate are correspondingly arranged, the first supporting plate comprises a first supporting surface, the first supporting surface is used for supporting a first palladium sheet connected with a negative electrode of a to-be-tested battery, the second supporting plate comprises a second supporting surface, and the second supporting surface is used for supporting a second palladium sheet connected with a positive electrode of the to-be-tested battery. The test power lines and palladium sheets are stored through the supporting surfaces of the two supporting plates, so that disordered arrangement positions of the power lines and the to-be-tested battery are avoided, the operation table is arranged in order, and short circuit between the power lines and the power lines of different groups of tests is avoided.

Description

Technical Field

[0001] This application relates to the field of battery testing technology, and in particular to a battery testing fixture and a battery testing frame. Background Technology

[0002] In related technologies, the four-wire pin type fixture is commonly used for battery performance testing. However, when testing high-rate charge and discharge using the pin type fixture, there are problems such as high heat generation, low charge and discharge efficiency, and large measurement errors due to its large contact resistance.

[0003] To address the issue of high contact resistance between the test pin and the battery, a common method is to solder palladium plates to the positive and negative terminals of the battery. These palladium plates are then connected to the OT terminal of the power line for testing, meaning the battery under test is directly carried by the power line. While this method solves the problem of excessive contact resistance, it also presents challenges during testing. The power line is prone to irregular bends, leading to disorganized placement of the battery and power line, resulting in a messy wiring layout on the testing platform and potentially causing short circuits with power lines from other testing groups. Utility Model Content

[0004] This application provides a battery testing fixture and a battery testing frame to at least solve the existing technical problems of disordered arrangement of the battery under test and power line in battery performance testing, and the easy occurrence of short circuits in the power line.

[0005] A first aspect of this application provides a battery testing fixture, including: a base plate, a first support structure, and a second support structure. Both the first support structure and the second support structure are disposed on the base plate. The first support structure includes a first support plate, and the second support structure includes a second support plate. The first support plate and the second support plate are correspondingly disposed to each other. The first support plate includes a first support surface for supporting a first palladium sheet connected to the negative electrode of the battery under test. The second support plate includes a second support surface for supporting a second palladium sheet connected to the positive electrode of the battery under test.

[0006] The battery testing fixture according to the embodiments of this application has at least the following beneficial effects:

[0007] During battery testing, the palladium plates for the positive and negative terminals of the battery are placed on the first support surface of the first support plate and the second support surface of the second support plate, respectively. One end of the power line connector is also placed on both support surfaces, and the power line is connected to the palladium plate on the support surfaces to complete the battery test. The support surfaces of the two support plates are used to accommodate the power line and palladium plate, avoiding a disordered arrangement of the power line and the battery under test, keeping the operating table orderly, and preventing short circuits between the power line and the power lines of other test groups.

[0008] In one possible implementation, the first support plate further includes a first limiting structure for limiting relative displacement of the first palladium sheet mounted on the first support surface relative to the first support surface. The second support plate further includes a second limiting structure for limiting relative displacement of the second palladium sheet mounted on the second support surface relative to the second support surface. The first and second limiting structures ensure a more stable connection between the palladium sheet of the battery under test and the battery testing fixture.

[0009] In one possible implementation, the first limiting structure includes a first protrusion extending from the first support plate in a direction away from the first support plate, and the second limiting structure includes a second protrusion extending from the second support plate in a direction away from the second support plate. A first palladium sheet is placed on the first support plate such that the first protrusion on the first support plate passes through an opening in the first palladium sheet. The engagement of the first protrusion with the opening restricts the first palladium sheet from moving radially along the opening, thereby preventing the first palladium sheet from falling off the first support plate and further enhancing the supporting effect of the first support plate on the first palladium sheet.

[0010] In one possible implementation, both the first protrusion and the second protrusion are bolts, and both the first support plate and the second support plate have threaded holes that match the bolts. The bolt structure of the first and second protrusions makes the manufacturing of the first and second support plates more convenient.

[0011] In one possible implementation, the first support structure further includes a first connecting arm connected to the first support plate, the first connecting arm being connected to the base plate and extending from the base plate in a direction away from the base plate. The second support structure further includes a second connecting arm connected to the second support plate, the second connecting arm being connected to the base plate and extending from the base plate in a direction away from the base plate. By utilizing the first connecting arm to configure the first support plate to protrude from the base plate in a direction away from the base plate, the first support plate is positioned away from the base plate, thereby forming a space between the first support plate and the base plate to accommodate test batteries of different sizes.

[0012] In one possible implementation, both the first and second support surfaces are planar, with the first support surface parallel to the plane containing the base plate, and the second support surface also parallel to the plane containing the base plate. The first support plate serves both to connect the power line and the first palladium plate and to support the battery under test, thereby making the battery testing fixture more compact and cost-effective.

[0013] In one possible implementation, the battery testing fixture further includes a first slider, which is slidably connected to the base plate to make the relative position between the first slider and the base plate adjustable. The first slider is connected to the first connecting arm. By changing the relative position between the first slider and the base plate, the position between the first support plate connected to the first slider and the bottom edge is changed. At this time, the relative distance between the first support plate and the second support plate can be adjusted, thereby accommodating batteries of different sizes to be tested.

[0014] In one possible implementation, the base plate further includes a multi-hole position adjustment plate, which includes a plurality of first positioning holes extending along the sliding direction of the first slider and the base plate. The first slider further includes a second positioning hole and a positioning rod, which are matched. The positioning rod is used to insert into the first positioning hole and the second positioning hole. Using a multi-hole position adjustment plate matched with the second positioning holes on the first slider as an adjustment mechanism for adjusting the distance between the first support plate and the second support plate results in a simpler structure and manufacturing process for the multi-hole position adjustment plate, saving on the manufacturing cost of the battery testing fixture.

[0015] In one possible implementation, the battery testing fixture further includes a first connecting rod passing through the first slider and the first connecting arm. A first groove is formed on the surface of the base plate facing the first slider, extending along the sliding direction between the first slider and the base plate. The first connecting rod is at least partially located within the first groove. The second positioning hole is an elongated hole, extending in the same direction as the plurality of first positioning holes. Setting the second positioning hole as an elongated hole improves the adjustment accuracy of the distance between the first and second support plates, thereby accommodating batteries of more sizes and specifications.

[0016] A second aspect of this application provides a battery test fixture, including a wiring channel and at least two placement plates. The upper surface of the placement plates is used to place a battery test fixture as described in any of the foregoing embodiments. The wiring channel is disposed below the placement plates, and the position of the wiring channel corresponds to the battery test fixture. The wiring channel is used to receive power lines for the battery test fixture.

[0017] According to the battery test rack of this application embodiment, the power line and palladium plate are housed by the support surfaces of two support plates, and the power line is accommodated by the wiring channel of the battery test rack, so as to avoid the power line and the battery under test being arranged in a disorderly manner, and to avoid the power line from being short-circuited with the power line of other test groups. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of a battery testing fixture provided in an embodiment of this application;

[0020] Figure 2 This is a schematic diagram of the battery test fixture, the battery under test, and the power line assembled according to an embodiment of this application;

[0021] Figure 3 yes Figure 2 A schematic diagram along line A-A';

[0022] Figure 4 yes Figure 3 A partial schematic diagram at point B in the middle;

[0023] Figure 5 This is a schematic diagram of the first support structure provided in an embodiment of this application;

[0024] Figure 6 This is a schematic diagram of a battery test fixture provided in an embodiment of this application.

[0025] Figure label:

[0026] 100-Battery test fixture, 110-Base plate, 111-Multi-hole position adjustment plate, 1111-First positioning hole, 112-First slide groove, 120-First support structure, 121-First support plate, 1211-First support surface, 1212-First limiting structure, 1212a-First protrusion, 1213-Threaded hole, 122-First connecting arm, 130-Second support structure, 131-Second support plate, 1311-Second support surface, 1312-Second limiting structure, 1312a-Second protrusion, 132-Second connecting arm, 140-First slider, 141-Second positioning hole, 150-First connecting rod;

[0027] 200-Battery test rack, 210-Wire routing channel, 220-Placement board, 230-Frame, 240-Moving wheel set;

[0028] 300 - Battery under test, 310 - First palladium plate, 320 - Second palladium plate;

[0029] 400-Power line. Detailed Implementation

[0030] The embodiments of this implementation are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this implementation, and should not be construed as limiting this implementation.

[0031] In the description of this embodiment, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this embodiment and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this embodiment.

[0032] In the description of this embodiment, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0033] In the description of this embodiment, unless otherwise explicitly limited, terms such as setting, installing, and connecting should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this embodiment in conjunction with the specific content of the technical solution.

[0034] The following combination Figures 1 to 5 The battery test fixture of the present application is described in detail.

[0035] Please refer to Figure 1 , Figure 1 This is a schematic diagram of the battery testing fixture 100. The battery testing fixture 100 includes a base plate 110, a first support structure 120, and a second support structure 130. The first support structure 120 and the second support structure 130 are disposed on the base plate 110. The first support structure 120 includes a first support plate 121, and the second support structure 130 includes a second support plate 131. The first support plate 121 and the second support plate 131 are correspondingly arranged. The first support plate 121 also includes a first support surface 1211, which is used to support a first palladium sheet 310 connected to the negative electrode of the battery under test 300. The second support plate 131 includes a second support surface 1311, which is used to support a second palladium sheet 320 connected to the positive electrode of the battery under test 300. Please refer to further details. Figure 2 , Figure 2This is a schematic diagram showing the installation of the battery under test 300 and the power line 400 on the battery testing fixture 100. Two corresponding first support plates 121 and second support plates 131 are set on the base plate 110. The support surfaces of the first support plates 121 and second support plates 131 respectively support the two palladium plates of the battery under test 300, thus supporting the battery under test 300 with palladium plates. The battery testing fixture 100 supports the battery under test 300, making its position more orderly during testing. When using the battery testing fixture 100 for testing, the power line can be connected to the palladium plates. Because the support plates of the battery testing fixture 100 support the palladium plates of the battery under test 300, the power line connected to the palladium plates is routed more orderly, avoiding a cluttered testing platform and further preventing short circuits between the power lines and other battery testing power lines.

[0036] It is understandable that the first support plate 121 and the second support plate 131 are arranged to correspond to each other, and there is a gap between the first support plate 121 and the second support plate 131 for placing the battery 300 under test; the corresponding arrangement can also be that the first support surface 1211 of the first support plate 121 and the second support surface 1311 of the second support plate 131 are at the same height.

[0037] Understandably, traditional battery test fixtures use a four-wire pin-type fixture. This type of fixture is designed for batteries under test that do not use a palladium sheet. The fixture includes pins, which contact the battery under test horizontally at their ends to perform the test. To avoid high resistance due to the small contact area between the pin end and the battery under test, a palladium sheet is typically used. The palladium sheet is a conductive metal sheet, roughly rectangular in shape. One end of the palladium sheet is soldered to the battery under test, resulting in a larger contact area and reduced resistance. The other end of the palladium sheet is then connected to the power line to test various parameters of the battery. Since a pin-type fixture cannot adequately support a rectangular palladium sheet, this embodiment uses a support plate with a support surface. The plate-shaped support surface perfectly fits the rectangular palladium sheet, offering simple design while providing good support.

[0038] Please continue to refer to this. Figure 2 During testing, the first palladium plate 310 of the negative electrode and the second palladium plate 320 of the positive electrode of the battery under test 300 are placed on the first support surface 1211 of the first support plate 121 and the second support surface 1311 of the second support plate 131, respectively. The power line 400 is then connected to the first palladium plate 310 and the second palladium plate 320, and the test can begin.

[0039] It is understood that the base plate 110 can be made of metal or plastic, and there are no specific restrictions. It is understood that the base plate 110 can be rectangular in shape, with fixing holes at each of its four corners, through which it can be fixed to the battery testing platform. It is understood that the specific manner in which the first support structure 120 and the second support structure 130 are disposed on the base plate 110 is not limited; for example, it can be a fixed connection or a sliding connection.

[0040] In some implementation methods, please refer to Figure 2 , Figure 3 and Figure 4 The first support plate 121 further includes a first limiting structure 1212, which restricts the displacement of the first palladium sheet 310 mounted on the first support surface 1211 relative to the first support surface 1211. The second support plate 131 further includes a second limiting structure 1312, which restricts the relative displacement of the second palladium sheet 320 mounted on the second support surface 1311 relative to the second support surface 1311. The first limiting structure 1212 and the second limiting structure 1312 ensure a more stable connection between the palladium sheet of the battery under test 300 and the battery testing fixture 100.

[0041] In some embodiments, the first limiting structure 1212 includes a first protrusion 1212a extending from the first support plate 121 in a direction away from the first support plate 121, and the second limiting structure 1312 includes a second protrusion 1312a extending from the second support plate 131 in a direction away from the second support plate 131. Since the battery testing fixture 100 is provided with the first protrusion 1212a on the first support plate 121 and the second protrusion 1312a on the second support plate 131, the first palladium plate 310 and the second palladium plate 320 of the battery under test 300 are both provided with openings that cooperate with the first protrusion 1212a and the second protrusion 1312a. When the battery under test 300 is tested, the first palladium sheet 310 is placed on the first support plate 121, and the first protrusion 1212a on the first support plate 121 passes through the opening on the first palladium sheet 310. Through the cooperation between the first protrusion 1212a and the opening, the first palladium sheet 310 is restricted from moving in the radial direction of the opening, so as to prevent the first palladium sheet 310 from falling off the first support plate 121, and further enhance the supporting effect of the first support plate 121 on the first palladium sheet 310. It can be understood that the end of the power line 400 can also be provided with an opening. The opening at the end of the power line 400 and the opening of the first palladium sheet 310 are passed through the first protrusion 1212a in sequence, and then the power line 400 and the first palladium sheet 310 are pushed to abut against the first support plate 121. At this time, the power line 400 and the first palladium sheet 310 abut against each other to achieve electrical connection, completing the connection process before testing. Meanwhile, by providing openings on the first palladium plate 310 and a first protrusion 1212a on the first support plate 121, it is also beneficial for testers to position the battery under test 300 more quickly, saving test time. Similarly, the second limiting structure 1312 adopts the same structure and principle, which will not be described in detail here.

[0042] It is understood that the first protrusion 1212a and the first support plate 121 can be an integral structure, a separate connection, or a detachable connection; no specific limitation is made. In some embodiments, the first protrusion 1212a is perpendicular to the first support surface 1211 of the first support plate 121. Similarly, the structure and principle of the second protrusion 1312a are the same as those of the first protrusion 1212a, and no limitation is made here.

[0043] In some embodiments, the first limiting structure includes a spring clip, which can be integral with the first support plate or separate from it. The spring clip includes two clamps. Before testing the battery under test, the first palladium plate 310 and the power line 400 are placed between the two clamps. The clamping force generated by the two clamps connects the power line 400 and the first palladium plate 310, thus completing the electrical connection between them. The clamping force between the two clamps restricts the relative movement between the power line 400 and the first palladium plate 310, and also restricts the relative movement between the first palladium plate, the power line, and the first support plate, thereby making the battery under test 300 more stable during testing.

[0044] In some embodiments, both the first protrusion 1212a and the second protrusion 1312a are bolts, and both the first support plate 121 and the second support plate 131 have threaded holes 1213 that match the bolts. It is understood that during battery testing, it is only necessary to install the bolts in the threaded holes 1213 on the support plates, making the manufacturing of the first support plate 121 and the second support plate 131 more convenient. It is also understood that, to ensure the reliability of the connection between the power line 400 and the first palladium plate 310 and to avoid open circuits, the bolt may also include a nut. After the bolt passes through the opening at the end of the power line 400 and the opening in the first palladium plate 310 in sequence, the nut is screwed onto the bolt until it is tightened. This ensures that the power line 400 and the first palladium plate 310 located between the first support plate 121 and the nut are in full contact, preventing open circuits during testing.

[0045] In some implementation methods, please refer to Figure 5The first support structure 120 also includes a first connecting arm 122 connected to the first support plate 121. The first connecting arm 122 is connected to the base plate 110 and extends from the base plate 110 in a direction away from the base plate 110. The second support structure 130 also includes a second connecting arm 132 connected to the second support plate 131. The second connecting arm 132 is connected to the base plate 110 and extends from the base plate 110 in a direction away from the base plate 110. By using the first connecting arm 122 to set the first support plate 121 to protrude from the base plate 110 in a direction away from the base plate 110, the first support plate 121 is moved away from the base plate 110, thereby forming a space between the first support plate 121 and the base plate 110. This space is used to accommodate batteries, thus avoiding the need to open a receiving groove on the base plate 110, which would increase the process difficulty, and also accommodating batteries of different sizes. This simplifies the structure of the battery testing fixture 100 and reduces the production difficulty of the base plate 110. In some embodiments, the first support structure 120 is made of stainless steel and is stamped into an integral structural component including the first connecting arm 122 and the first support plate 121. It is understood that the first connecting arm 122 can be directly connected to the base plate 110, or it can be indirectly connected to the base plate 110 through an intermediate component.

[0046] In some embodiments, the direction of the first connecting arm 122 away from the base plate 110 is perpendicular to the plane of the base plate 110. In some embodiments, both the first support surface 1211 and the second support surface 1311 are planes, with the first support surface 1211 parallel to the plane of the base plate 110 and the second support surface 1311 parallel to the plane of the base plate 110. During the test, the base plate 110 is placed on the operating table, at which point the plane of the base plate 110 is horizontal. Since the first support surface 1211 is parallel to the plane of the base plate 110, the supporting force of the horizontal first support surface 1211 on the first palladium plate 310 is maximized compared to the inclined first support surface 1211. This allows the first support plate 121 to both connect the power line 400 and the first palladium plate 310 and support the battery under test 300, thus making the battery test fixture 100 more compact and cost-effective.

[0047] In some embodiments, the battery testing fixture 100 further includes a first slider 140, which is slidably connected to a base plate 110 so that the relative position between the first slider 140 and the base plate 110 is adjustable. The first slider 140 is connected to a first connecting arm 122. By changing the relative position between the first slider 140 and the base plate 110, the position between the first support plate 121 connected to the first slider 140 and the bottom edge is changed. At this time, the relative distance between the first support plate 121 and the second support plate 131 can be adjusted, thereby accommodating batteries 300 of different sizes to be tested. In some embodiments, the battery testing fixture 100 further includes a second slider, which cooperates with a second support structure. The specific structure is the same as that of the first slider, and will not be described again here.

[0048] In some embodiments, the base plate 110 further includes a multi-hole position adjustment plate 111, which includes a plurality of first positioning holes 1111 extending along the sliding direction of the first slider 140 and the base plate 110. The first slider 140 also includes a second positioning hole 141 and a positioning rod, which are matched. The positioning rod is used to insert into the first positioning hole 1111 and the second positioning hole 141. By using the multi-hole position adjustment plate 111 to match the second positioning hole 141 on the first slider 140 as an adjustment mechanism for adjusting the distance between the first support plate 121 and the second support plate 131, the structure and manufacturing process of the multi-hole position adjustment plate 111 are relatively simple, saving the manufacturing cost of the battery testing fixture 100.

[0049] In some embodiments, the battery testing fixture 100 further includes a first connecting rod 150, which passes through the first slider 140 and the first connecting arm 122. A first groove 112 is formed on the surface of the base plate 110 facing the first slider 140, extending along the sliding direction between the first slider 140 and the base plate 110. The first connecting rod 150 is at least partially located within the first groove 112. The second positioning hole 141 is an elongated hole, extending in the same direction as the plurality of first positioning holes 1111. Setting the second positioning hole 141 as an elongated hole improves the adjustment accuracy of the distance between the first support plate 121 and the second support plate 131, thereby accommodating batteries 300 of more sizes and specifications.

[0050] The following combination Figure 6 The battery test fixture of the present application is described in detail.

[0051] Please refer to Figure 6The battery test rack 200 includes a wiring channel 210 and at least two placement plates 220. The upper surface of the placement plates 220 is used to place the battery test fixture 100 provided in any of the aforementioned embodiments. The wiring channel 210 is disposed below the placement plates 220, and its position corresponds to that of the battery test fixture 100. The wiring channel 210 is used to receive the power line 400 for the battery test fixture 100. By providing the wiring channel 210 below the battery test fixture 100, the wiring of the entire battery test rack 200 is made more organized, facilitating maintenance of the battery test rack 200 by operators.

[0052] In some embodiments, the battery test rack 200 further includes a frame 230 and a set of wheels 240. The frame 230 forms an accommodating space, and the set of wheels 240 is mounted on the bottom wall of the frame 230. At least two placement plates 220 are mounted from top to bottom in the accommodating space of the frame 230 and connected to the frame 230. By providing the set of wheels 240, it is convenient for operators to move the battery test rack 200 to the required position.

[0053] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this implementation. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0054] Although embodiments of this implementation have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this implementation, the scope of which is defined by the claims and their equivalents.

Claims

1. A battery testing fixture, characterized in that, The device includes a base plate, a first support structure, and a second support structure. Both the first and second support structures are disposed on the base plate. The first support structure includes a first support plate, and the second support structure includes a second support plate. The first and second support plates are disposed corresponding to each other. The first support plate includes a first support surface for supporting a first palladium sheet connected to the negative electrode of the battery under test. The second support plate includes a second support surface for supporting a second palladium sheet connected to the positive electrode of the battery under test.

2. The battery testing fixture according to claim 1, characterized in that, The first support plate further includes a first limiting structure, which is used to limit the relative displacement of the first palladium sheet mounted on the first support surface relative to the first support surface. The second support plate further includes a second limiting structure, which is used to limit the relative displacement of the second palladium sheet mounted on the second support surface relative to the second support surface.

3. The battery testing fixture according to claim 2, characterized in that, The first limiting structure includes a first protrusion extending from the first support plate in a direction away from the first support plate, and the second limiting structure includes a second protrusion extending from the second support plate in a direction away from the second support plate.

4. The battery testing fixture according to claim 3, characterized in that, Both the first protrusion and the second protrusion are bolts, and both the first support plate and the second support plate have threaded holes that match the bolts.

5. The battery testing fixture according to any one of claims 1-4, characterized in that, The first support structure further includes a first connecting arm connected to the first support plate, the first connecting arm being connected to the base plate and extending from the base plate in a direction away from the base plate. The second support structure further includes a second connecting arm connected to the second support plate, the second connecting arm being connected to the base plate and extending from the base plate in a direction away from the base plate.

6. The battery testing fixture according to claim 5, characterized in that, Both the first support surface and the second support surface are planes. The first support surface is parallel to the plane on which the base plate is located, and the second support surface is parallel to the plane on which the base plate is located.

7. The battery testing fixture according to claim 5, characterized in that, The battery testing fixture also includes a first slider, which is slidably connected to the base plate so that the relative position between the first slider and the base plate is adjustable, and the first slider is connected to the first connecting arm.

8. The battery testing fixture according to claim 7, characterized in that, The base plate also includes a multi-hole position adjustment plate, which includes a plurality of first positioning holes. The plurality of first positioning holes extend along the sliding direction of the first slider and the base plate. The first slider also includes a second positioning hole and a positioning rod. The first positioning hole, the second positioning hole and the positioning rod are matched. The positioning rod is used to be inserted into the first positioning hole and the second positioning hole.

9. The battery testing fixture according to claim 8, characterized in that, The battery testing fixture further includes a first connecting rod, which passes through the first slider and the first connecting arm. A first groove is formed on the surface of the base plate facing the first slider. The first groove extends along the sliding direction between the first slider and the base plate. The first connecting rod is at least partially located in the first groove. The second positioning hole is an elongated hole, and the extension direction of the elongated hole is the same as the extension direction of the plurality of first positioning holes.

10. A battery testing fixture, characterized in that, The device includes a wiring channel and at least two placement plates. The upper surface of the placement plates is used to place the battery test fixture as described in any one of claims 1 to 9. The wiring channel is located below the placement plates and its position corresponds to the battery test fixture. The wiring channel is used to receive power lines for the battery test fixture.

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