Battery cell test fixture

Abstract

The utility model discloses a battery cell test fixture, and belongs to the technical field of battery cell test. The battery cell test clamp comprises a base, a support, two pressing parts, two conductive connecting sheets and two cables. The frame body is arranged on one side of the support in the battery cell test clamp, the two conductive connecting sheets are respectively fixed at the bottom of the frame body, one ends of the two cables are electrically connected with the two pole columns of the battery cell, and the other ends of the two cables can be respectively fixed on the two conductive connecting sheets. Therefore, a cable used for transmitting electric energy can be fixedly installed on the electrical core test clamp, the possibility of connection of the positive electrode and the negative electrode is physically isolated, and the bad phenomenon of short circuit between the positive electrode and the negative electrode of the electrical core is avoided. Besides, the conductive end of the charging and discharging equipment extends into the frame body and then is aligned with the conductive connecting piece, and an operator can operate the pressing part with one hand to press the conductive end of the charging and discharging equipment and the conductive connecting piece, so that the charging and discharging test of the battery cell is realized.

Description

Technical Field

[0001] The present application relates to the technical field of battery cell testing, and in particular to a battery cell testing fixture. Background Art

[0002] New energy storage technologies are attracting widespread attention, and energy storage cells continue to be a hot commodity in the energy storage market, resulting in significant shipments. To ensure that the quality of shipped cells meets customer requirements, extensive performance and cycle testing is required.

[0003] Currently, during battery cell testing, two cables are used to connect the cell terminals and the charging and discharging equipment ports. However, these two cables can easily come into contact during the cell testing process, causing a short circuit. Utility Model Content

[0004] The present invention provides a battery cell testing fixture. This can solve the problem in the prior art where cables used for battery cell testing are easily short-circuited due to contact. The technical solution is as follows:

[0005] In one aspect, a battery cell testing fixture is provided, comprising:

[0006] Base, bracket, two pressing parts, two conductive connecting pieces and two cables;

[0007] The base and the bracket are arranged opposite to each other and connected to each other, and the side of the base facing the bracket is used to support the battery cell;

[0008] The bracket has a frame on one side away from the base, the two conductive connecting pieces are respectively fixed to the bottom of the frame and are insulated, and the frame is used to support the two conductive ends of the charging and discharging device;

[0009] One end of the two cables is electrically connected to the two poles of the battery cell, and the other end of the two cables is electrically connected to the two conductive connecting pieces.

[0010] The two pressing components are movably connected to the frame respectively, and one end of the pressing component extends into the frame;

[0011] After the conductive end of the charging and discharging device is located between the pressing component and the conductive connecting piece, moving the pressing component can apply pressure to the conductive end of the charging and discharging device to abut against the conductive connecting piece.

[0012] Optionally, the frame includes: a first sub-frame and a second sub-frame that are separately arranged, one of the pressing components is movably connected to the first sub-frame, and the other pressing component is movably connected to the second sub-frame; the two conductive connecting pieces are respectively fixed in the first sub-frame and the second sub-frame; one conductive end of the charging and discharging device can be extended into the first sub-frame, and the other conductive end of the charging and discharging device can be extended into the second sub-frame.

[0013] Optionally, the battery cell testing fixture further includes: a first insulating layer fixed between one of the conductive connecting pieces and the bottom of the first sub-frame, and a second insulating layer fixed between another of the conductive connecting pieces and the bottom of the second sub-frame.

[0014] Optionally, the pressing component includes: a handle and a pressing plate, wherein the pressing plate is fixedly connected to one end of the handle, the pressing plate is located inside the frame, and an end of the handle facing away from the pressing plate is located outside the frame;

[0015] Wherein, the handle is threadedly connected to the frame.

[0016] Optionally, the pressing component further includes: an insulating protective layer fixed to the side of the pressing disc facing away from the handle member.

[0017] Optionally, the battery cell test fixture further comprises: a lifting clamp and two conductive posts, wherein the lifting clamp and the two conductive posts are both located between the battery cell and the bracket, the lifting clamp is slidably connected to the base, and the two conductive posts are connected to the lifting clamp; one end of the cable facing away from the conductive connecting piece is electrically connected to the corresponding conductive post;

[0018] In which, the lifting clamp is configured to: drive the two conductive columns to move in the direction close to the two poles of the battery cell, so that the end of the conductive column facing away from the cable abuts against the pole of the battery cell, or drive the two conductive columns to move in the direction away from the two poles of the battery cell.

[0019] Optionally, the base includes: a base body and a lifting guide rail, the two ends of the lifting guide rail are fixedly connected to the base body and the bracket respectively; the lifting clamp includes: a clamp body and a long-handled fastening bolt, the clamp body is arranged opposite to the base body, the clamp body is sleeved on the lifting guide rail and is slidably connected to the lifting guide rail, and the long-handled fastening bolt is inserted into the clamp body; the two conductive posts are slidably connected to the clamp body;

[0020] The long-handled fastening bolt is configured such that after the clamping member body slides to a designated position on the lifting guide rail, it abuts against a side surface of the lifting guide rail.

[0021] Optionally, the clamp body has a strip-shaped through-slot, one end of the conductive post passes through the strip-shaped through-slot and is located on a side of the clamp body close to the base body, the other end of the conductive post is located on a side of the clamp body away from the base body, and a portion of the conductive post between the two ends is located in the strip-shaped through-slot;

[0022] The battery cell testing fixture further includes: two limiting members, the two limiting members corresponding to the two conductive posts respectively, the limiting members being sleeved on the corresponding conductive posts and movably connected to the conductive posts, and the width of the limiting members being greater than the width of the strip-shaped through slot;

[0023] Wherein, the limiting member is configured to abut against the clamping member body after the conductive column moves to a specified position along the strip-shaped through slot.

[0024] Optionally, the side surface of the conductive column has an external thread, and the portion of the limiting member that contacts the conductive column has an internal thread that matches the external thread.

[0025] Optionally, the battery cell testing fixture also includes: two auxiliary limit members corresponding to the two conductive columns respectively, the auxiliary limit members are sleeved on the part of the corresponding conductive column located on the side of the clamp body close to the base body, and the width of the auxiliary limit members is greater than the width of the strip-shaped through groove.

[0026] The beneficial effects of the technical solutions provided in the embodiments of the present application include at least:

[0027] A battery cell test fixture may include: a base, a bracket, two clamping components, two conductive connecting pieces and two cables. By setting a frame on one side of the bracket in the battery cell test fixture, the two conductive connecting pieces are respectively fixed to the bottom of the frame, and at the same time, one end of the two cables is electrically connected to the two poles of the battery cell, and the other ends of the two cables can be fixed to the two conductive connecting pieces respectively. In this way, the cables used to transmit electric energy can be fixedly installed on the battery cell test fixture, and the possibility of physical isolation of the positive and negative pole connections is ensured to ensure that the adverse phenomenon of short circuit does not occur between the positive and negative poles of the battery cell. In addition, after the conductive end of the charging and discharging device is extended into the frame and aligned with the conductive connecting piece, the operator can operate the clamping component with one hand to clamp the conductive end of the charging and discharging device to the conductive connecting piece to realize the charge and discharge test of the battery cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0029] Figure 1 This is a schematic structural diagram of a battery cell testing fixture provided in an embodiment of the present application;

[0030] Figure 2 yes Figure 1 A front view of a cell test fixture is shown;

[0031] Figure 3 Schematic diagram of another battery cell testing fixture provided in an embodiment of the present application;

[0032] Figure 4 This is a partial structural diagram of a battery cell testing fixture provided in an embodiment of the present application;

[0033] Figure 5 This is a structural diagram of another battery cell testing fixture provided in an embodiment of the present application;

[0034] Figure 6 yes Figure 5 A front view of the battery cell test fixture is shown.

[0035] The above drawings illustrate specific embodiments of the present application, which will be described in more detail below. These drawings and the textual description are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION

[0036] In order to make the objectives, technical solutions and advantages of this application clearer, the implementation methods of this application will be further described in detail below with reference to the accompanying drawings.

[0037] Please refer to Figure 1 and Figure 2 , Figure 1 This is a structural diagram of a battery cell testing fixture provided in an embodiment of the present application. Figure 2 yes Figure 1 The battery cell testing fixture may include: a base 100 , a bracket 200 , two pressing components 300 , two conductive connecting pieces 400 , and two cables 500 .

[0038] The base 100 and the bracket 200 in the battery cell testing fixture can be arranged opposite to each other and connected to each other, and the side of the base 100 facing the bracket 200 can be used to support the battery cell A.

[0039] The side of the bracket 200 in the battery cell test fixture facing away from the base 100 may have a frame 201. Two conductive connecting pieces 400 may be respectively fixed to the bottom of the frame 201 and insulated. Here, the frame 201 may be used to support the two conductive ends of the charging and discharging device (not shown).

[0040] One end of the two cables 500 in the battery cell test fixture can be electrically connected to the two poles of the battery cell A, and the other ends of the two cables 500 can be electrically connected to the two conductive connecting pieces 400. Here, the other ends of the two cables 500 can be fixed to the two conductive connecting pieces 400, and the two poles of the battery cell A can be the positive pole and the negative pole, respectively.

[0041] The two pressing components 300 in the battery cell test fixture can be movably connected to the frame 201, and one end of the pressing component 300 can extend into the frame 201. Here, the two pressing components 300 correspond to the two conductive connecting pieces 400 respectively.

[0042] After the conductive end of the charging and discharging device is located between the end of the pressing component 300 and the conductive connecting piece 400, the pressing component 300 is moved to apply pressure to the conductive end of the charging and discharging device so that it abuts against the conductive connecting piece 400. For example, two pressing components 300 can be moved in sequence so that one end of each pressing component 300 can apply pressure to the conductive end of the charging device so that the conductive end of the charging device abuts against the conductive connecting piece 400.

[0043] In an embodiment of the present application, a frame 201 is provided on one side of the bracket 200 in the battery cell test fixture, two conductive connecting pieces 400 are respectively fixed to the bottom of the frame 201, and one end of the two cables 500 is electrically connected to the two poles of the battery cell A, and the other ends of the two cables 500 can be respectively fixed on the two conductive connecting pieces 400. In this way, the cable 500 for transmitting electric energy can be fixedly installed on the battery cell test fixture, and the possibility of physical isolation of the positive and negative poles is ensured to prevent the occurrence of the adverse phenomenon of short circuit between the positive and negative poles of the battery cell A. In addition, after the conductive end of the charging and discharging device is extended into the frame 201 and aligned with the conductive connecting piece 400, the operator can operate the clamping component 300 with one hand to clamp the conductive end of the charging and discharging device to the conductive connecting piece 400 to realize the charge and discharge test of the battery cell A.

[0044] In summary, the embodiment of the present application provides a battery cell test fixture, which may include: a base, a bracket, two clamping components, two conductive connecting pieces and two cables. By setting a frame on one side of the bracket in the battery cell test fixture, the two conductive connecting pieces are respectively fixed to the bottom of the frame, and at the same time, one end of the two cables is electrically connected to the two poles of the battery cell, and the other ends of the two cables can be fixed on the two conductive connecting pieces respectively. In this way, the cables for transmitting electric energy can be fixedly installed on the battery cell test fixture, and the possibility of physical isolation of the positive and negative pole connections is ensured to ensure that the adverse phenomenon of short circuit does not occur between the positive and negative poles of the battery cell. In addition, after the conductive end of the charging and discharging device is extended into the frame and aligned with the conductive connecting piece, the operator can operate the clamping component with one hand to clamp the conductive end of the charging and discharging device with the conductive connecting piece to realize the charge and discharge test of the battery cell.

[0045] Optional, please refer to Figure 3 , Figure 3 FIG2 is a schematic diagram of another battery cell test fixture provided in an embodiment of the present application. The bracket 200 in the battery cell test fixture may include: a support plate 202 and a frame 201. The support plate 202 may be fixedly connected to the base 100, and the frame 201 may be fixedly connected to the side of the support plate 202 facing away from the base 100.

[0046] In the embodiments of this application, Figure 3 As shown, the frame 201 in the bracket 200 may include: a first sub-frame 201a and a second sub-frame 201b, each of which is separately arranged. One pressing component 300 can be movably connected to the first sub-frame 201a, and another pressing component 300 can be movably connected to the second sub-frame 201b. Two conductive connecting pieces 400 can be fixed respectively in the first sub-frame 201a and the second sub-frame 201b. One conductive end of the charging and discharging device can extend into the first sub-frame 201a, and the other conductive end of the charging and discharging device can extend into the second sub-frame 201b. In this case, by providing two separate sub-frames in the frame 201 and fixing the two conductive connecting pieces 400 respectively in the two sub-frames, the two conductive ends of the charging and discharging device can extend into the two sub-frames respectively. In this way, the ends of the two cables 500 can be further spatially isolated, further ensuring that the ends of the two cables 500 will not touch each other and cause a short circuit.

[0047] Optional, please refer to Figure 3 and Figure 4 , Figure 4It is a partial structural diagram of a battery cell test fixture provided in an embodiment of the present application. The battery cell test fixture may also include: a first insulating layer 600 fixed between a conductive connecting piece 400 and the bottom of the first sub-frame 201a, and a second insulating layer 700 fixed between another conductive connecting piece 400 and the bottom of the second sub-frame 201b. In this case, by providing an insulating layer between each conductive connecting piece 400 and the bottom of the sub-frame, the conductive connecting piece 400 is fixed on the insulating layer, so that it can effectively ensure that the undesirable phenomenon of short circuit will not occur between the two conductive connecting pieces 400. It should be noted that in other possible implementations, the bottom of the first sub-frame 201a for mounting and fixing the conductive connecting piece 400 can be made of an insulating material, and the bottom of the second sub-frame 201b for mounting and fixing the conductive connecting piece 400 can be made of an insulating material.

[0048] In the embodiments of this application, Figure 3 and Figure 4 As shown, each clamping component 300 in the battery cell test fixture may include: a handle member 301 and a clamping plate 302, one side of the clamping plate 302 may be fixedly connected to one end of the handle member 301, the clamping plate 302 may be located inside the frame 201, and the end of the handle member 301 facing away from the clamping plate 302 may be located outside the frame 201. The handle member 301 may be threadedly connected to the frame 201. In this case, by arranging the handle member 301 and the clamping plate 302 in the clamping component 300, after extending the conductive end of the charging and discharging device into the frame 201 and aligning it with the conductive connecting piece 400, the operator may operate the handle member 301 with one hand to rotate it in one direction relative to the frame 201, and drive the clamping plate 302 to move in a direction close to the conductive end of the charging and discharging device, so as to bring the charging end of the charging and discharging device into close contact with the conductive connecting piece 400. After testing cell A, the operator can single-handedly rotate the handle 301 relative to the frame 201 in another direction, driving the compression plate 302 to move away from the conductive end of the charging and discharging device, making it easier for the operator to remove the conductive end of the charging and discharging device. For example, the width of the compression plate 302 in the compression component 300 can be greater than the width of the handle 301.

[0049] For example, Figure 3 and Figure 4 As shown, each handle member 301 may include a first rod 301a and a second rod 301b connected to each other, wherein one end of the second rod 301b may be fixedly connected to the first rod 301a, and the other end of the second rod 301b may extend into the frame 201 and be fixedly connected to the compression plate 302. The second rod 301b may be threadedly connected to the frame 201.

[0050] It should be noted that when the frame 201 in the bracket 200 includes a first sub-frame 201a and a second sub-frame 201b, one pressing component 300 can be threadedly connected to the first sub-frame 201a, and the other pressing component 300 can be threadedly connected to the second sub-frame 201b.

[0051] Optional, such as Figure 4 As shown, each clamping component 300 in the battery cell test fixture may also include: an insulating protective layer 303 fixed to the side of the clamping disc 302 away from the handle 301. In this case, after the clamping disc 302 moves a certain distance in the direction close to the conductive end of the charging and discharging device, the insulating protective layer 303 on one side of the clamping disc 302 contacts the conductive end of the charging and discharging device, which can provide a certain degree of protection for the operator and provide a buffering protection for the conductive end of the charging and discharging device. It should be noted that in other possible implementations, the clamping disc 302 in the clamping component 300 may also be made of an insulating material, and the embodiments of the present application do not make specific limitations on this. For example, the insulating protective layer 303 may be a rubber layer or a foam layer.

[0052] In the examples of this application, please refer to Figure 3 and Figure 5 , Figure 5 It is a structural schematic diagram of another battery cell test fixture provided in an embodiment of the present application. The battery cell test fixture may also include: a lifting clamp 800 and two conductive columns 900. The lifting clamp 800 and the two conductive columns 900 can be located between the battery cell A and the bracket 200. The lifting clamp 800 and the base 100 can be slidably connected, and the two conductive columns 900 can be connected to the lifting clamp 800. The end of each cable 500 that is away from the corresponding conductive connecting piece 400 can be electrically connected to the corresponding conductive column 900. Among them, the lifting clamp 800 can be configured to: drive the two conductive columns 900 to move in the direction close to the two poles of the battery cell A, so that the end of the conductive column 900 that is away from the cable 500 can abut against the pole of the battery cell A, or drive the two conductive columns 900 to move in the direction away from the two poles of the battery cell A.

[0053] In this case, by providing a lifting clamp 800 and two conductive posts 900 in the battery cell testing fixture, when performing a performance test on the battery cell, first, the battery cell A is placed on the base 100; then, the lifting clamp 800 is driven to drive the two conductive posts 900 to move in a direction close to the two poles of the battery cell A, ensuring that the two conductive posts 900 are in contact with the two poles of the battery cell A. In this way, the electrical energy of the battery cell A can be transmitted to the charging and discharging equipment in sequence through the conductive posts 900, the cable 500, and the conductive connecting piece 400. In this way, there is no need to perform operations such as welding the conductive posts 900 to the poles of the battery cell A, allowing the battery cell A to be reused, effectively reducing the cost of battery cell testing. After the battery cell performance test is completed, the lifting clamp 800 is driven to drive the two conductive posts 900 to move in a direction away from the battery cell A, so that the conductive posts 900 are separated from the two poles of the battery cell A. For example, both conductive posts 900 can be conductive copper posts.

[0054] Optional, such as Figure 3 and Figure 5 As shown, the base 100 in the battery cell test fixture may include: a base body 101 and a lifting guide rail 102, and the two ends of the lifting guide rail 102 may be fixedly connected to the base body 101 and the bracket 200 respectively. The lifting clamp 800 may include: a clamp body 801 and a long-handled fastening bolt 802, the clamp body 801 may be arranged opposite to the base body 101, the clamp body 801 may be sleeved on the lifting guide rail 102 and may be slidably connected to the lifting guide rail 102. The long-handled fastening bolt 802 may be inserted into the clamp body 801, and the two conductive columns 900 may be slidably connected to the clamp body 801. Among them, the long-handled fastening bolt 802 may be configured so that after the clamp body 801 slides to a specified position on the lifting guide rail 102, it abuts against the side of the lifting guide rail 102. For example, when the clamp body 801 needs to be moved, the operator can drive the end of the long-handled fastening bolt 802 to separate from the lifting guide rail 102, so that the clamp body 801 can slide on the lifting guide rail 102. After the clamp body 801 slides to the specified position, the operator drives the end of the long-handled fastening bolt 802 to abut against the side of the lifting guide rail 102, thereby fixing the clamp body 801. It should be noted that the specified position of the clamp body 801 on the lifting guide rail 102 can be: the position of the clamp body 801 after the clamp body 801 drives the conductive column 900 to move to contact the two poles of the battery cell A.

[0055] In the present application, there may be two lifting guide rails 102, which are respectively fixedly connected to both ends of the base body 101. Correspondingly, there may also be two long-shank fastening bolts 802.

[0056] In the examples of this application, please refer to Figure 6 , Figure 6 yes Figure 5 A front view of a battery cell testing fixture is shown. The clamp body 801 may have a strip-shaped through-slot a1, and one end of each conductive column 900 may pass through the strip-shaped through-slot a1 and be located on a side of the clamp body 801 close to the base body 101, and the other end of the conductive column 900 may be located on a side of the clamp body 801 away from the base body 101, and the portion between the two ends of the conductive column 900 may be located within the strip-shaped through-slot a1. The battery cell testing fixture may further include: two limiting members 1000, the two limiting members 1000 may correspond to the two conductive columns 900 respectively, the limiting members 1000 may be sleeved on the corresponding conductive columns 900 and may be movably connected to the conductive columns 900, and the width of the limiting members 1000 may be greater than the width of the strip-shaped through-slot a1 of the clamp body 801. Each of the limiting members 1000 may be configured to abut against a side of the clamping member body 801 facing away from the base body 101 after the conductive pillar 900 moves to a designated position along the strip-shaped through slot a1 .

[0057] For example, by providing a strip-shaped through-slot a1 on the clamp body 801, the conductive post 900 is inserted into the strip-shaped through-slot a1. When the stopper 1000 moves a certain distance on the conductive post 900 in a direction away from the clamp body 801, it can be disengaged from the clamp body 801. In this way, the conductive post 900 can move smoothly within the strip-shaped through-slot a1, and the distance between the two conductive posts 900 can be adjusted to match the distance between the two poles of the battery cell A. Then, the stopper 1000 moves a certain distance on the conductive post 900 in a direction close to the clamp body 801 and abuts the clamp body 801, and then the conductive post 900 can be fixed in a specified position. In this way, the battery cell test fixture can test batteries of different sizes and models. In addition, when testing the battery cell, the operator does not need to use other additional tools to clamp the battery cell or clamp the conductive ends of the cable and charging and discharging equipment, making the battery cell testing operation convenient and the battery cell testing fixture highly integrated. It should be noted that the extending direction of the strip-shaped through slot a1 in the clamp body 801 can be parallel to the arrangement direction of the two poles of the battery cell A.

[0058] For example, the conductive post 900 may have an external thread (not shown), and the portion of the stopper 1000 that contacts the conductive post 900 may have an internal thread that matches the external thread of the conductive post 900. For example, the stopper 1000 may be a clevis cap.

[0059] Optional, such as Figure 6As shown, the battery cell test fixture may further include: two auxiliary limiting members 1100 corresponding to the two conductive posts 900, each of which may be sleeved on a portion of the corresponding conductive post 900 located on the side of the clamp body 801 close to the base body 101, and the width of the auxiliary limiting member 1100 may be greater than the width of the strip-shaped through-slot a1 of the clamp body 801. In this case, by sleeve-fitting and fixing the auxiliary limiting member 1100 on the portion of the conductive post 900 located on the side of the clamp body 801 close to the base body 101, and the width of the auxiliary limiting member 1100 being greater than the width of the strip-shaped through-slot, the conductive post 900 may be effectively prevented from being separated from the strip-shaped through-slot a1.

[0060] In summary, the embodiment of the present application provides a battery cell test fixture, which may include: a base, a bracket, two clamping components, two conductive connecting pieces and two cables. By setting a frame on one side of the bracket in the battery cell test fixture, the two conductive connecting pieces are respectively fixed to the bottom of the frame, and at the same time, one end of the two cables is electrically connected to the two poles of the battery cell, and the other ends of the two cables can be fixed on the two conductive connecting pieces respectively. In this way, the cables for transmitting electric energy can be fixedly installed on the battery cell test fixture, and the possibility of physical isolation of the positive and negative pole connections is ensured to ensure that the adverse phenomenon of short circuit does not occur between the positive and negative poles of the battery cell. In addition, after the conductive end of the charging and discharging device is extended into the frame and aligned with the conductive connecting piece, the operator can operate the clamping component with one hand to clamp the conductive end of the charging and discharging device with the conductive connecting piece to realize the charge and discharge test of the battery cell.

[0061] It should be noted that in the accompanying drawings, the sizes of layers and regions may be exaggerated for clarity of illustration. It will also be understood that when an element or layer is referred to as being "on" another element or layer, it may be directly on the other element, or there may be an intermediate layer. In addition, it will be understood that when an element or layer is referred to as being "under" another element or layer, it may be directly under the other element, or there may be more than one intermediate layer or element. In addition, it will also be understood that when a layer or element is referred to as being "between" two layers or elements, it may be the only layer between the two layers or elements, or there may also be more than one intermediate layer or element. Similar reference numerals throughout the text indicate similar elements.

[0062] In this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. The term "plurality" refers to two or more than two, unless expressly limited otherwise.

[0063] The above description is merely an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A battery cell testing fixture, characterized in that: include: Base, bracket, two pressing parts, two conductive connecting pieces and two cables; The base and the bracket are arranged opposite to each other and connected to each other, and the side of the base facing the bracket is used to support the battery cell; The bracket has a frame on one side away from the base, the two conductive connecting pieces are respectively fixed to the bottom of the frame and are insulated, and the frame is used to support the two conductive ends of the charging and discharging device; One end of the two cables is electrically connected to the two poles of the battery cell, and the other end of the two cables is electrically connected to the two conductive connecting pieces. The two pressing components are movably connected to the frame respectively, and one end of the pressing component extends into the frame; After the conductive end of the charging and discharging device is located between the pressing component and the conductive connecting piece, moving the pressing component can apply pressure to the conductive end of the charging and discharging device to abut against the conductive connecting piece.

2. The battery cell testing fixture according to claim 1, characterized in that: The frame includes: a first sub-frame and a second sub-frame that are separately arranged, one of the pressing components is movably connected to the first sub-frame, and the other pressing component is movably connected to the second sub-frame; the two conductive connecting pieces are respectively fixed in the first sub-frame and the second sub-frame; one conductive end of the charging and discharging device can be extended into the first sub-frame, and the other conductive end of the charging and discharging device can be extended into the second sub-frame.

3. The battery cell testing fixture according to claim 2, characterized in that: The battery cell testing fixture further includes: a first insulating layer fixed between one of the conductive connecting pieces and the bottom of the first sub-frame, and a second insulating layer fixed between another of the conductive connecting pieces and the bottom of the second sub-frame.

4. The battery cell testing fixture according to claim 1, characterized in that: The pressing component includes: a handle and a pressing plate, wherein the pressing plate is fixedly connected to one end of the handle, the pressing plate is located in the frame, and the end of the handle facing away from the pressing plate is located outside the frame; Wherein, the handle is threadedly connected to the frame.

5. The battery cell testing fixture according to claim 4, characterized in that: The pressing component further includes: an insulating protective layer fixed on the side of the pressing disc facing away from the handle.

6. The battery cell testing fixture according to any one of claims 1 to 5, characterized in that: The battery cell testing fixture further includes: a lifting clamp and two conductive posts, wherein the lifting clamp and the two conductive posts are both located between the battery cell and the bracket, the lifting clamp is slidably connected to the base, and the two conductive posts are connected to the lifting clamp; an end of the cable facing away from the conductive connecting piece is electrically connected to the corresponding conductive post; In which, the lifting clamp is configured to: drive the two conductive columns to move in the direction close to the two poles of the battery cell, so that the end of the conductive column facing away from the cable abuts against the pole of the battery cell, or drive the two conductive columns to move in the direction away from the two poles of the battery cell.

7. The battery cell testing fixture according to claim 6, characterized in that: The base comprises: a base body and a lifting guide rail, the two ends of the lifting guide rail are fixedly connected to the base body and the bracket respectively; the lifting clamp comprises: a clamp body and a long-handled fastening bolt, the clamp body is arranged opposite to the base body, the clamp body is sleeved on the lifting guide rail and is slidably connected to the lifting guide rail, and the long-handled fastening bolt is inserted into the clamp body; the two conductive posts are slidably connected to the clamp body; The long-handled fastening bolt is configured such that after the clamping member body slides to a designated position on the lifting guide rail, it abuts against a side surface of the lifting guide rail.

8. The battery cell testing fixture according to claim 7, characterized in that: The clamp body has a strip-shaped through-slot, one end of the conductive post passes through the strip-shaped through-slot and is located on a side of the clamp body close to the base body, the other end of the conductive post is located on a side of the clamp body away from the base body, and a portion of the conductive post between the two ends is located in the strip-shaped through-slot; The battery cell testing fixture further includes: two limiting members, the two limiting members corresponding to the two conductive posts respectively, the limiting members being sleeved on the corresponding conductive posts and movably connected to the conductive posts, and the width of the limiting members being greater than the width of the strip-shaped through slot; Wherein, the limiting member is configured to abut against a side of the clamping member body away from the base body after the conductive column moves to a designated position along the strip-shaped through slot.

9. The battery cell testing fixture according to claim 8, characterized in that: The side surface of the conductive column has an external thread, and the portion of the limiting member that contacts the conductive column has an internal thread that matches the external thread.

10. The battery cell testing fixture according to claim 8, characterized in that: The battery cell testing fixture also includes: two auxiliary limit members corresponding to the two conductive columns respectively, the auxiliary limit members are sleeved on the part of the corresponding conductive column located on the side of the clamp body close to the base body, and the width of the auxiliary limit members is greater than the width of the strip-shaped through groove.

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