Battery cell pairing system and pairing method

Abstract

The invention belongs to the technical field of battery production, and discloses a battery cell pairing system and pairing method. The battery cell pairing system comprises a feeding mechanism and two battery cell clamps, one of the two battery cell clamps is used for clamping a battery cell body placed in the + X direction, the other battery cell clamp is used for clamping a battery cell body placed in the-X direction, the two battery cell clamps can move in the X direction, and at least one battery cell clamp can move in the Z direction; the positions of the two battery cell clamps are exchanged; the battery cell clamp comprises a driving mechanism and two clamping jaws which are oppositely arranged, and the output end of the driving mechanism is connected with at least one clamping jaw, so that the two adjacent clamping jaws are close to each other and clamp and fix a battery cell body; and the feeding mechanisms are used for placing the battery cell bodies on the two battery cell clamps respectively. The battery cell pairing system can complete pairing of two pairs of battery cell bodies in one working process, so that pairing of the battery cell bodies is rapidly carried out, the working efficiency is improved, the occupied area is small, and the cost is lower.

Description

Technical Field

[0001] The present invention relates to the technical field of battery production, and in particular to a battery cell pairing system and a pairing method. Background Art

[0002] The production and manufacturing of lithium batteries are becoming more and more mature, and their application areas are constantly being updated, and the demand is also increasing. A single lithium-ion battery usually has multiple cells inside, and multiple cells are connected in parallel or in series. To ensure the smooth operation of the lithium-ion battery as a whole, the consistency of multiple cells must be good, otherwise the performance of the lithium-ion battery will decline rapidly during use, seriously affecting the user experience.

[0003] In the prior art, when pairing battery cells, the battery cells are first transported to a battery cell rotating mechanism, where they are rotated so that the two battery cells to be paired appear in pairs in the form of A / B side batteries. After the rotation is completed, the battery cells are returned to the pairing mechanism for stacking and pairing. Transporting the battery cells back and forth multiple times prolongs the working time and reduces the working efficiency. In addition, a separate battery cell rotating mechanism needs to occupy an additional separate workstation, which occupies a large area.

[0004] Therefore, there is an urgent need to provide a new battery cell pairing system and pairing method to solve the above technical problems in the prior art. Summary of the invention

[0005] The object of the present invention is to provide a battery cell pairing system, which can quickly pair battery cells, improve work efficiency, occupy a smaller area and have lower cost.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] The battery cell pairing system comprises a feeding mechanism and two battery cell clamps, wherein one of the two battery cell clamps is used to clamp a battery cell body placed along the +X direction, and the other is used to clamp a battery cell body placed along the -X direction, and both of the two battery cell clamps can move along the X direction, and at least one of the battery cell clamps can move along the Z direction, so that the positions of the two battery cell clamps can be interchanged; the battery cell clamp comprises a driving mechanism and two clamps arranged opposite to each other, and the output end of the driving mechanism is connected to at least one of the clamps, so that two adjacent clamps are close to each other and clamp and fix the battery cell body; the feeding mechanism is used to place the battery cell body on the two battery cell clamps respectively.

[0008] Optionally, one of the two clamps is a fixed clamp, which is fixed to the clamp seat of the battery cell clamp, and the other is a movable clamp, which is connected to the output end of the driving mechanism.

[0009] Optionally, the driving mechanism includes a first driving member, a push rod, a connecting rod and an elastic member, the push rod is connected to the output end of the first driving member, one end of the connecting rod is connected to the push rod, and the other end is connected to the movable clamping jaw, the first driving member is used to drive the push rod to move along the Y direction, so that the connecting rod rotates and drives the movable clamping jaw to move along the X direction, and the movable clamping jaw can approach or move away from the fixed clamping jaw along the X direction.

[0010] Optionally, any one of the clamp seat and the push rod is provided with a first slide rail extending along the Y direction, and the other is provided with a first slide groove extending along the Y direction and slidably connected to the first slide rail.

[0011] Optionally, any one of the clamp seat and the movable clamp is provided with a second slide rail extending along the X direction, and the other is provided with a slider extending along the Y direction and slidably connected to the second slide rail.

[0012] Optionally, the battery cell pairing system further comprises a pairing bracket, the pairing bracket is provided with a first pairing slide rail and a second pairing slide rail both extending along the X direction, the first pairing slide rail and the second pairing slide rail have different height positions in the Z direction, and the pairing bracket is further provided with a first pairing drive member and a second pairing drive member, one of the two battery cell clamps is connected to the output end of the first pairing drive member and is slidably connected to the first pairing slide rail, and the other is connected to the output end of the second pairing drive member and is slidably connected to the second pairing slide rail.

[0013] Optionally, the first matching drive member and the second matching drive member both include a drive motor, an output end of the drive motor is connected to a ball screw extending along the X direction, and a drive block matched with the ball screw is provided at the bottom of the battery clamp.

[0014] Optionally, the matching bracket is further provided with a lifting cylinder, and an output end of the lifting cylinder is connected to at least one of the two battery cell clamps.

[0015] Optionally, the battery cell fixture is provided with an X-direction displacement sensor and a Z-direction displacement sensor, the X-direction displacement sensor is used to detect the displacement of the battery cell fixture along the X-direction, and the Z-direction displacement sensor is used to detect the displacement of the battery cell fixture along the Z-direction.

[0016] Another object of the present invention is to provide a cell pairing method, which is used in a cell pairing system as described in any of the above schemes, including the following steps: S1, cell loading: the above loading mechanism places one of the above cell bodies in one of the above cell clamps along the +X direction for clamping and fixing, and places the other cell body in the other of the above cell clamps along the -X direction for clamping and fixing; S2, cell pairing: one of the above cell clamps moves along the Z direction, and the two above cell clamps move along the X direction at the same time, so that the positions of the two cell clamps are interchanged, and the cell pairing is completed at this time. A pair of the battery cell bodies are paired, and then the two battery cell bodies are taken out; S3, secondary loading of the battery cells: the loading mechanism places one of the battery cell bodies in one of the battery cell clamps along the +X direction and clamps it, and places the other battery cell body in the other of the battery cell clamps along the -X direction and clamps it; S4, pairing and resetting the battery cells: one of the battery cell clamps moves along the Z direction, and the two battery cell clamps move along the X direction at the same time, so that the positions of the two battery cell clamps are interchanged, at which time the pairing of the second pair of battery cell bodies is completed and the two battery cell clamps are reset.

[0017] Beneficial effects:

[0018] The battery cell pairing system of the present invention places battery cell bodies on two battery cell clamps respectively through a feeding mechanism, so that the two battery cell clamps clamp the two battery cell bodies respectively. At this time, the two battery cell bodies are respectively arranged along the -X direction and the +X direction. Since at least one battery cell clamp can move along the Z direction, a height difference occurs between the two battery cell clamps. The two battery cell clamps move relative to each other along the X direction, so that the two battery cell clamps move relative to each other while clamping the battery cell bodies. Subsequently, the battery cell clamp having the ability to move in the Z direction adjusts its own height in the Z direction, so that the two battery cell bodies are at the same height, and the positions of the two battery cell bodies are interchanged and the directions are adjusted. The original two battery cell bodies with opposite battery cell pole ears are adjusted to two battery cell bodies with opposite battery cell pole ears. Through the close connection of the four battery cell pole ears of the two battery cell bodies, the pairing of a pair of battery cell bodies is finally completed. After the pairing is completed, the two paired battery cell bodies 10 are removed. During the resetting process of the two battery cell clamps, the two battery cell bodies can also be placed again, and the pairing of the second pair of battery cell bodies is completed while the resetting is performed. The battery cell pairing system can complete the pairing of two pairs of battery cell bodies during one operation and resetting process, thereby quickly pairing the battery cell bodies and improving work efficiency. In addition, the battery cell pairing system does not require a battery cell flipping device, occupies a smaller area, and has lower manufacturing and use costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is an axonometric diagram of a cell pairing system provided in a specific embodiment of the present invention;

[0020] Figure 2 It is an axonometric diagram of a partial structure of a battery cell fixture provided in a specific embodiment of the present invention;

[0021] Figure 3 It is an axonometric diagram from another perspective of the battery cell pairing system provided in a specific embodiment of the present invention.

[0022] In the figure:

[0023] 10. Battery cell body;

[0024] 100, battery cell fixture; 101, driving mechanism; 1011, first driving member; 102, fixture seat; 103, X-direction displacement sensor; 104, Z-direction displacement sensor; 105, material level sensor; 110, clamping jaw; 111, fixed clamping jaw; 112, movable clamping jaw; 113, slider; 114, second slide rail; 120, push rod; 121, first slide rail; 130, connecting rod; 140, elastic member;

[0025] 200, matching bracket; 201, first matching slide rail; 202, second matching slide rail; 210, first matching driving member; 211, ball screw; 212, driving block; 220, second matching driving member; 230, lifting cylinder. DETAILED DESCRIPTION

[0026] 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.

[0027] 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.

[0028] 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.

[0029] 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.

[0030] like Figures 1 to 3 As shown, in this embodiment, the X direction and the Y direction are both horizontal directions, and the X direction and the Y direction are perpendicular to each other, while the Z direction is a vertical direction, and the X direction, the Y direction and the Z direction are perpendicular to each other. Here, when the battery body 10 is placed along the +X direction, the battery cell tabs on the battery body 10 face the +X direction, and when the battery body 10 is placed along the -X direction, the battery cell tabs on the battery body 10 face the -X direction.

[0031] Please refer to Figure 1 and Figure 2 In this embodiment, the battery cell pairing system includes a feeding mechanism and two battery cell clamps 100, one of the two battery cell clamps 100 is used to clamp the battery cell body 10 placed along the +X direction, and the other is used to clamp the battery cell body 10 placed along the -X direction. Both of the above-mentioned battery cell clamps 100 can move along the X direction, and at least one of the above-mentioned battery cell clamps 100 can move along the Z direction, so that the positions of the two above-mentioned battery cell clamps 100 are interchanged; the above-mentioned battery cell clamp 100 includes a driving mechanism 101 and two relatively arranged clamps 110, and the output end of the above-mentioned driving mechanism 101 is connected to at least one of the above-mentioned clamps 110, so that the two adjacent above-mentioned clamps 110 are close to each other and clamp and fix the above-mentioned battery cell body 10; the above-mentioned feeding mechanism is used to place the above-mentioned battery cell body 10 on the two above-mentioned battery cell clamps 100 respectively.

[0032] The cell pairing system in this embodiment places the cell body 10 on the two cell clamps 100 through the feeding mechanism, so that the two cell clamps 100 clamp the two cell bodies 10 respectively. At this time, the two cell bodies 10 are respectively arranged along the -X direction and the +X direction. Since at least one cell clamp 100 can move along the Z direction, there is a height difference between the heights of the two cell clamps 100. The two cell clamps 100 move relative to each other in the X direction, so that the two cell clamps 100 move relative to each other while clamping the cell body 10. Then, the cell clamp 100 capable of moving in the Z direction adjusts itself in the X direction. The height in the Z direction makes the two battery cell bodies 10 at the same height, realizes the interchange of the positions and the adjustment of the directions of the two battery cell bodies 10, adjusts the original two battery cell bodies 10 with the battery cell pole ears facing away from each other to two battery cell bodies 10 with the battery cell pole ears facing each other, and finally completes the pairing of a pair of battery cell bodies 10 by bringing the four battery cell pole ears of the two battery cell bodies 10 close to and connecting them; and after the pairing is completed, the two paired battery cell bodies 10 are removed, and in the process of resetting the two battery cell clamps 100, the two battery cell bodies 10 can also be placed again, and the pairing of the second pair of battery cell bodies 10 is completed while resetting. The battery cell pairing system can complete the pairing of two pairs of battery cell bodies 10 in one operation and resetting process, so as to quickly pair the battery cell bodies 10 and improve work efficiency, and the battery cell pairing system does not need to use a battery cell flipping device, and it occupies a small area, and has lower manufacturing and use costs.

[0033] In this embodiment, the loading mechanism is not shown in the figure. The loading mechanism includes a robot and two loading lines, which respectively store the battery cell bodies 10 placed along the +X direction and the battery cell bodies 10 placed along the -X direction. The robot places the battery cell bodies 10 from the loading lines onto the corresponding battery cell fixtures 100.

[0034] Please continue to refer to Figure 1 and Figure 2 One of the two clamps 110 is a fixed clamp 111, which is fixed to the clamp seat 102 of the battery clamp 100, and the other is a movable clamp 112, which is connected to the output end of the driving mechanism 101. In this embodiment, only one clamp 110 is set as the movable clamp 112, so that the movable clamp 112 is connected to the driving mechanism 101, and the movement of the movable clamp 112 is realized, so that the battery body 10 is clamped and fixed when the movable clamp 112 approaches the fixed clamp 111; compared with the solution in which both clamps 110 are moving, the above structure can simplify the structure of the driving mechanism 101, reduce the number of components, and improve reliability.

[0035] Furthermore, the driving mechanism 101 includes a first driving member 1011, a push rod 120, a connecting rod 130 and an elastic member 140. The push rod 120 is connected to the output end of the first driving member 1011. One end of the connecting rod 130 is connected to the push rod 120, and the other end is connected to the movable clamp 112. The first driving member 1011 is used to drive the push rod 120 to move along the Y direction, so that the connecting rod 130 rotates and drives the movable clamp 112 to move along the X direction. The movable clamp 112 can approach or move away from the fixed clamp 111 along the X direction. In this embodiment, the first driving member 1011 drives the push rod 120 to move along the Y direction. At this time, the connecting rod 130 connects the push rod 120 and the movable clamping claw 112 respectively, and the connecting rod 130 itself rotates, and the angle between the connecting rod 130 and the push rod 120 changes, thereby pushing the movable clamping claw 112 away from the push rod 120, so that a clamping space appears between the movable clamping claw 112 and the fixed clamping claw 111, and the battery body 10 is put in at this time; then, after the push rod 120 is driven to move a certain distance, the elastic member 140 resets the push rod 120 due to the elastic force, and after the first driving member 1011 is released from driving, the movable clamping claw 112 is close to the fixed clamping claw 111, so as to clamp the battery body 10. The structure of the driving mechanism 101 is simple, and the battery body 10 can be clamped conveniently, and the fixing effect is better.

[0036] In this embodiment, either the clamp seat 102 or the push rod 120 is provided with a first slide rail 121 extending in the Y direction, and the other is provided with a first slide groove extending in the Y direction and slidably connected to the first slide rail 121. In this example, the push rod 120 is provided with the first slide rail 121 extending in the Y direction, which can guide the movement of the push rod 120, and the movement of the push rod 120 on the clamp seat 102 is more stable, so as to achieve a stable clamping of the battery body 10 and avoid deviation.

[0037] Please continue to refer to Figure 2 , either one of the clamp seat 102 and the movable clamping jaw 112 is provided with a second slide rail 114 extending along the X direction, and the other is provided with a slider 113 extending along the Y direction and slidably connected to the second slide rail 114. In this embodiment, the clamp seat 102 is provided with two second slide rails 114 parallel to each other, and two sliders 113 are provided at the bottom of the movable clamping jaw 112. The cooperation of the second slide rail 114 and the slider 113 can realize the stable movement of the movable clamping jaw 112, and guide the movement of the movable clamping jaw 112, so as to clamp the battery cell body 10 more stably.

[0038] like Figure 1 and Figure 3As shown, the battery cell pairing system also includes a pairing bracket 200, and the pairing bracket 200 is provided with a first pairing slide rail 201 and a second pairing slide rail 202 both extending along the X direction. The first pairing slide rail 201 and the second pairing slide rail 202 have different height positions in the Z direction, and the pairing bracket 200 is also provided with a first pairing drive member 210 and a second pairing drive member 220. One of the two battery cell clamps 100 is connected to the output end of the first pairing drive member 210 and is slidably connected to the first pairing slide rail 201, and the other is connected to the output end of the second pairing drive member 220 and is slidably connected to the second pairing slide rail 202. In this embodiment, the first pairing slide rail 201 is arranged below the second pairing slide rail 202, and two first pairing slide rails 201 and two second pairing slide rails 202 are respectively arranged, and the two first pairing slide rails 201 are located between the two second pairing slide rails 202, so that when there is a height difference between the two battery cell clamps 100 and they move and exchange positions along the X direction, they can play an avoidance role, ensuring that the various mechanisms do not affect each other, thereby improving work efficiency.

[0039] Optionally, the first paired driving member 210 and the second paired driving member 220 both include a driving motor, the output end of the driving motor is connected to a ball screw 211 extending along the X direction, and the bottom of the battery cell fixture 100 is provided with a driving block 212 that is matched and connected to the ball screw 211. The driving motor drives the ball screw 211 to rotate along its own axis (parallel to the X axis in the X direction), and the driving block 212 matched with the ball screw 211 can translate along the X direction, thereby driving the two battery cell fixtures 100 to move along the X direction.

[0040] In this embodiment, the above-mentioned matching bracket 200 is further provided with a lifting cylinder 230, and the output end of the above-mentioned lifting cylinder 230 is connected to at least one of the two above-mentioned battery cell clamps 100. Specifically, in this embodiment, only one battery cell clamp 100 is connected to the lifting cylinder 230, so as to realize the up and down movement of one battery cell clamp 100, so that the battery cell clamp 100 passes through the bottom of the other battery cell clamp 100 along the X direction after being lowered, thereby realizing the exchange of the positions of the two battery cell clamps 100 in the X direction.

[0041] Furthermore, the cell fixture 100 is provided with an X-direction displacement sensor 103 and a Z-direction displacement sensor 104. The X-direction displacement sensor 103 is used to detect the displacement of the cell fixture 100 along the X-direction, and the Z-direction displacement sensor 104 is used to detect the displacement of the cell fixture 100 along the Z-direction. The X-direction displacement sensor 103 and the Z-direction displacement sensor 104 can detect the position and displacement distance of the cell fixture 100 in the X-direction and the Z-direction. When the positions of the two cell fixtures 100 are interchanged, the moving distance of the two cell fixtures 100 can be accurately controlled by the data detected by the X-direction displacement sensor 103 and the Z-direction displacement sensor 104, so as to ensure that after the positions of the two cell fixtures 100 are interchanged, the two cell bodies 10 can remain facing each other, so as to facilitate the subsequent cell pairing.

[0042] Furthermore, the cell fixture 100 is also provided with a material level sensor 105 which can detect whether there is a cell body 10 on the cell fixture 100 . Only after the cell bodies 10 are all placed in place can the cell fixture 100 be moved to achieve pairing of two cell bodies 10 .

[0043] Another object of the present invention is to provide a cell pairing method, which is used in a cell pairing system as described in any of the above schemes, and comprises the following steps: S1, cell loading: the above loading mechanism places one of the above cell bodies 10 in the above cell clamp 100 along the +X direction for clamping and fixing, and places another of the above cell bodies 10 in the above cell clamp 100 along the -X direction for clamping and fixing;

[0044] S2, battery cell pairing: one of the battery cell clamps 100 moves along the Z direction, and the two battery cell clamps 100 move along the X direction at the same time, so that the positions of the two battery cell clamps 100 are interchanged, at which point a pair of battery cell bodies 10 are paired, and then the two battery cell bodies 10 are taken out; S3, battery cell secondary loading: the loading mechanism places one of the battery cell bodies 10 in the +X direction in one of the battery cell clamps 100 for clamping and fixing, and places the other battery cell body 10 in the -X direction in the other of the battery cell clamps 100 for clamping and fixing; S4, battery cell pairing and resetting: one of the battery cell clamps 100 moves along the Z direction, and the two battery cell clamps 100 move along the X direction at the same time, so that the positions of the two battery cell clamps 100 are interchanged, at which point the second pair of battery cell bodies 10 are paired and the two battery cell clamps 100 are reset.

[0045] The cell pairing method in this embodiment, when using the above cell pairing system, can make the two cell clamps 100 move to each other's position, and then the two cell clamps 100 adjust their own height in the Z direction so that the two cell bodies 10 are at the same height, so as to achieve the exchange of positions and adjustment of directions of the two cell bodies 10, and finally complete the pairing of a pair of cell bodies 10; and in the process of resetting the two cell clamps 100, two cell bodies 10 can also be placed, and the pairing of the second pair of cell bodies 10 can be completed while resetting. The cell pairing method can complete the pairing of two pairs of cell bodies 10 in one operation and resetting process, thereby quickly pairing the cell bodies 10 and improving work efficiency.

[0046] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A cell pairing system, characterized in that: include: Two battery cell clamps (100), one of the two battery cell clamps (100) is used to clamp a battery cell body (10) placed along the +X direction, and the other is used to clamp a battery cell body (10) placed along the -X direction, both of the two battery cell clamps (100) are capable of moving along the X direction, and at least one of the battery cell clamps (100) is capable of moving along the Z direction, so that the positions of the two battery cell clamps (100) are interchanged; the battery cell clamp (100) comprises a driving mechanism (101) and two clamping jaws (110) arranged opposite to each other, and the output end of the driving mechanism (101) is connected to at least one of the clamping jaws (110), so that two adjacent clamping jaws (110) are close to each other and clamp and fix the battery cell body (10); A loading mechanism, the loading mechanism being used to place the battery cell body (10) on the two battery cell clamps (100) respectively.

2. The battery cell pairing system according to claim 1, characterized in that: One of the two clamping jaws (110) is a fixed clamping jaw (111), and the fixed clamping jaw (111) is fixed to the clamp seat (102) of the battery cell clamp (100); the other is a movable clamping jaw (112), and the movable clamping jaw (112) is connected to the output end of the driving mechanism (101).

3. The battery cell pairing system according to claim 2, characterized in that: The driving mechanism (101) comprises a first driving member (1011), a push rod (120), a connecting rod (130) and an elastic member (140); the push rod (120) is connected to the output end of the first driving member (1011); one end of the connecting rod (130) is connected to the push rod (120), and the other end is connected to the movable clamping jaw (112); the first driving member (1011) is used to drive the push rod (120) to move along the Y direction, so that the connecting rod (130) rotates and drives the movable clamping jaw (112) to move along the X direction; the movable clamping jaw (112) can approach or move away from the fixed clamping jaw (111) along the X direction.

4. The battery cell pairing system according to claim 3, characterized in that: Either one of the clamp seat (102) and the push rod (120) is provided with a first slide rail (121) extending along the Y direction, and the other is provided with a first slide groove extending along the Y direction and slidably connected to the first slide rail (121).

5. The battery cell pairing system according to claim 3, characterized in that: Either one of the clamp seat (102) and the movable clamping jaw (112) is provided with a second slide rail (114) extending along the X direction, and the other is provided with a slider (113) extending along the Y direction and slidably connected to the second slide rail (114).

6. The battery cell pairing system according to claim 1, characterized in that: The battery cell pairing system further comprises a pairing bracket (200), wherein the pairing bracket (200) is provided with a first pairing slide rail (201) and a second pairing slide rail (202) both extending in the X direction, wherein the first pairing slide rail (201) and the second pairing slide rail (202) have different height positions in the Z direction, and the pairing bracket (200) is further provided with a first pairing drive member (210) and a second pairing drive member (220), wherein one of the two battery cell clamps (100) is connected to an output end of the first pairing drive member (210) and is slidably connected to the first pairing slide rail (201), and the other is connected to an output end of the second pairing drive member (220) and is slidably connected to the second pairing slide rail (202).

7. The battery cell pairing system according to claim 6, characterized in that: The first matching driving member (210) and the second matching driving member (220) both comprise a driving motor, the output end of the driving motor being connected to a ball screw (211) extending along the X direction, and the bottom of the battery cell clamp (100) is provided with a driving block (212) that is matched and connected to the ball screw (211).

8. The battery cell pairing system according to claim 6, characterized in that: The matching bracket (200) is further provided with a lifting cylinder (230), and the output end of the lifting cylinder (230) is connected to at least one of the two battery cell clamps (100).

9. The battery cell pairing system according to any one of claims 1 to 8, characterized in that: The battery cell clamp (100) is provided with an X-direction displacement sensor (103) and a Z-direction displacement sensor (104); the X-direction displacement sensor (103) is used to detect the displacement of the battery cell clamp (100) along the X-direction; and the Z-direction displacement sensor (104) is used to detect the displacement of the battery cell clamp (100) along the Z-direction.

10. A cell pairing method, characterized in that: A cell pairing system for use in any one of claims 1 to 9, comprising the steps of: S1. Battery cell loading: the loading mechanism places one battery cell body (10) in a battery cell clamp (100) along the +X direction for clamping and fixing, and places another battery cell body (10) in another battery cell clamp (100) along the -X direction for clamping and fixing; S2, pairing of battery cells: one of the battery cell clamps (100) moves along the Z direction, and the two battery cell clamps (100) move along the X direction at the same time, so that the positions of the two battery cell clamps (100) are interchanged, and the pairing of a pair of battery cell bodies (10) is completed at this time, and then the two battery cell bodies (10) are taken out; S3, secondary loading of battery cells: the loading mechanism places one of the battery cell bodies (10) in a battery cell clamp (100) along the +X direction for clamping and fixing, and places another of the battery cell bodies (10) in another of the battery cell clamps (100) along the -X direction for clamping and fixing; S4, battery cell pairing and resetting: one of the battery cell clamps (100) moves along the Z direction, and the two battery cell clamps (100) move along the X direction at the same time, so that the positions of the two battery cell clamps (100) are interchanged, at which time the pairing of the second pair of battery cell bodies (10) is completed and the two battery cell clamps (100) are reset.

Images