Processing Method, Processing Tooling and Battery Module of Double-Row Battery Module

Abstract

The present invention provides a processing method, a processing tooling and a battery module for a double-row battery module. The processing method includes the following steps: Step S1, arrangement and clamping of cell units: making each cell unit in a first state where the pole blocks are all upward; Step S2, arrangement of connection units; Step S3, opposition and fixation of two cell units: taking the middle part of the first electrical connector as the rotation center, respectively rotating each cell unit upward, and the two cell units are switched to a second state where the pole blocks are opposed. In the processing method of the double-row battery module of the present invention, each cell is connected in series through the first electrical connector and the second electrical connector, and through the rotation of the two cell units, the pole blocks in the two cell units can be opposed, so as to switch the cell units from the first state to the second state, which is beneficial to avoiding the occurrence of the problem of unilateral high potential difference in the U-shaped circuit in the double-row battery module in the prior art, and is beneficial to improving the safety of the double-row battery module.

Description

Technical Field

[0001] The present invention relates to the technical field of power batteries, and particularly relates to a processing method for a double-row battery module. At the same time, the present invention also relates to a processing tool for applying this processing method, and a battery module manufactured by this processing method. Background Art

[0002] In the prior art, it is not easy to form an arrangement where the pole blocks in two corresponding battery cells in two rows of modules are arranged opposite to each other. Even after two single-row battery cell units are welded and then the battery cell units in each row are moved so that the pole blocks in each row are arranged corresponding to each other, at this time, a U-shaped voltage loop will be formed, resulting in a problem of high-voltage electromotive force at one end. Thus, it poses a great challenge to the insulation safety design and process safety within the battery module. In addition, there are also defects in the processing of double-row battery modules, such as large volume and low space utilization rate. Summary of the Invention

[0003] In view of this, the present invention aims to propose a processing method for a double-row battery module to improve the safety of the battery module and at the same time facilitate the improvement of production efficiency.

[0004] To achieve the above object, the technical solution of the present invention is realized as follows:

[0005] A structural method for a double-row battery module, the processing method includes the following steps:

[0006] Step S1, arrangement and clamping of battery cell units: Stack a plurality of battery cells and a plurality of separators alternately in sequence to form two of the battery cell units arranged side by side, so that each of the battery cell units is in a first state where the pole blocks are all facing upward, and clamp and fix both ends of each of the battery cell units;

[0007] Step S2, arrangement of connection units: Connect first electrical connectors between adjacent two of the pole blocks on two relatively arranged battery cells respectively. Along the length direction of the battery cell unit, arrange a plurality of second electrical connectors alternately on both sides of the first electrical connector, and form electrical connections between adjacent two of the pole blocks in the same column through the second electrical connectors, so that each of the battery cells in the two battery cell units is connected in series;

[0008] Step S3, opposition and fixation of the two battery cell units: Take the middle part of the first electrical connector as the rotation center, rotate each of the battery cell units upward respectively, the middle part of the first electrical connector is bent, and the two battery cell units are switched to a second state where the pole blocks are opposite to each other, and fix the two battery cell units in the second state.

[0009] Further, there is also a step S20 between step S2 and step S3;

[0010] Step S20 includes the arrangement of collecting plates: a first collecting plate electrically connected to each of the first electrical connectors is respectively arranged on the plurality of first electrical connectors, and a second collecting plate is respectively connected to two columns of the second electrical connectors.

[0011] Further, step S20 also includes the arrangement of pressure relief plates: a pressure relief plate is provided on the top of each of the battery cell units, spanning the explosion-proof devices provided on each of the battery cells;

[0012] A pressure relief groove extending along the length direction of the pressure relief plate is formed on the pressure relief plate, and through holes corresponding to each of the explosion-proof devices are provided at the bottom of the pressure relief groove.

[0013] Further, step S20 also includes the arrangement of insulating plates: the insulating plate is arranged on one of the pressure relief plates, and in the second state, the insulating plate forms a partition between the two battery cell units.

[0014] Compared with the prior art, the present invention has the following advantages:

[0015] In the processing method of the double-row battery module of the present invention, each battery cell is connected in series through the first electrical connector and the second electrical connector, and through the rotation of the two battery cell units, the pole blocks in the two battery cell units can be opposed, so that the battery cell units are switched from the first state to the second state, which is beneficial to avoiding the problem of unilateral high potential difference in the U-shaped circuit in the double-row battery module in the prior art, and is beneficial to improving the safety of the double-row battery module.

[0016] In addition, another object of the present invention is to provide a processing tooling for the double-row battery module, which is used to execute the above-mentioned processing method;

[0017] The processing tooling includes a base, and two supporting seats rotatably connected through rotating shafts at both ends;

[0018] Each of the supporting seats has a supporting plate and clamping plates oppositely arranged at both ends of the supporting plate. The battery cell units are respectively located on the supporting plates and are clamped between the two clamping plates in the first state;

[0019] Two guiding parts extending in the vertical direction are provided on the base, and each rotating shaft slides on the base through the guiding parts;

[0020] When the two supporting seats receive an external force, the rotating shafts slide vertically downward along the corresponding guiding parts, so that the two battery cell units rotate towards each other and are switched to the second state, and in the second state, the battery cell units are supported on the base.

[0021] Further, connection arms extending upward are respectively provided at two ends of the supporting seat, and the rotating shaft is connected between the corresponding two connection arms;

[0022] The guiding part is guiding holes provided on both sides of the base, and the rotating shaft is inserted into the corresponding guiding holes and can slide along the guiding holes.

[0023] Further, a plurality of rolling bodies are provided at the bottom of the supporting seat. When the supporting seat rotates, the rolling bodies can roll on the base to support the supporting seat on the base.

[0024] Further, the position of at least one of the clamping plates on the supporting plate is adjustable.

[0025] Further, each supporting seat has side plates located outside the clamping plates, and the two clamping plates, the supporting plate and the side plates jointly enclose a space for accommodating the battery cell unit;

[0026] And / or, an operating part for receiving the external force is provided on the supporting seat.

[0027] Compared with the prior art, the present invention has the following advantages:

[0028] When the supporting seat of the processing tooling for the double-row battery module of the present invention is driven to rotate by an external force, the rotating shaft can slide up and down on the base via the guiding part, which is beneficial to switching the battery cell unit from the first state to the second state, making the processing process of the double-row battery module easy to operate and conducive to improving the processing efficiency of the double-row battery module.

[0029] In addition, another object of the present invention is to provide a double-row battery module, which is processed by the processing method of the double-row battery module as described above.

[0030] For the double-row battery module of the present invention, by opposing the pole blocks in the two battery cell units and connecting the batteries in series, it is beneficial to avoid the U-shaped loop of voltage in the prior art, resulting in the problem of high voltage electromotive force at one end, thereby being beneficial to improving the safety of the battery module, and at the same time being beneficial to reducing the space occupation amount, and having good practicability. Description of the Drawings

[0031] The drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0032] Figure 1 It is a schematic structural diagram of two battery cell units in step S1 according to Embodiment 1 of the present invention;

[0033] Figure 2 Schematic diagram of the structure of two battery cell units in Embodiment 1 of the present invention at step S20;

[0034] Figure 3 Schematic diagram of the structure of the pressure relief plate in Embodiment 1 of the present invention;

[0035] Figure 4 Schematic diagram of the structure of two battery cell units in Embodiment 1 of the present invention at step S3;

[0036] Figure 5 Schematic diagram of the structure of the acquisition board, pressure relief plate and insulating plate in the first state in Embodiment 1 of the present invention;

[0037] Figure 6 Schematic diagram of the structure of the processing tooling and the battery cell unit in one use state in Embodiment 2 of the present invention;

[0038] Figure 7 Schematic diagram of the structure of the processing tooling and the battery cell unit in another use state in Embodiment 2 of the present invention;

[0039] Figure 8 Schematic diagram of the structure of the processing tooling in one use state in Embodiment 2 of the present invention;

[0040] Figure 9 Schematic diagram of the structure of the processing tooling in another use state in Embodiment 2 of the present invention.

[0041] Description of reference numerals:

[0042] 1. Battery cell; 2. Separator; 3. Base; 4. Support plate; 5. Clamping plate;

[0043] 100. Output pole piece; 101. Explosion-proof device; 102. Second acquisition board; 103. First acquisition board; 104. Second electrical connector; 105. Insulating plate; 106. Pressure relief plate; 1061. Through hole; 107. First electrical connector;

[0044] 301. Vertical plate; 302. Guide hole; 303. Rotating shaft;

[0045] 401. End plate; 4011. Connecting arm; 4012. Guide rail; 402. Protrusion; 403. Connecting shaft; 404. Roller; 405. Side plate; 406. Handle; 407. Operating rod. Detailed description of the invention

[0046] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0047] In the description of the present invention, it should be noted that if terms indicating orientation or positional relationship such as "upper", "lower", "inner", "back", etc. appear, they are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, if terms such as "first", "second", etc. appear, they are also only for descriptive purposes and should not be construed as indicating or implying relative importance.

[0048] The present invention will be described in detail below with reference to the drawings and in conjunction with embodiments.

[0049] Embodiment 1

[0050] This embodiment relates to a processing method for a double-row battery module. Generally speaking, the processing method includes the following steps:

[0051] Step S1, arrangement and clamping of battery cell units: A plurality of battery cells 1 and a plurality of separators 2 are alternately stacked in sequence to form two battery cell units arranged side by side, so that each battery cell unit is in a first state where the pole pieces are all facing upward, and both ends of each battery cell unit are clamped and fixed.

[0052] Step S2, arrangement of connection units: First electrical connectors 107 are respectively connected between adjacent pole pieces on two relatively arranged battery cells 1. Along the length direction of the battery cell unit, a plurality of second electrical connectors 104 are arranged in a staggered manner on both sides of the first electrical connector 107, and electrical connections between adjacent pole pieces in the same column are formed through the second electrical connectors 104, so that the battery cells 1 in the two battery cell units are connected in series.

[0053] Step S3, opposition and fixation of the two battery cell units: With the middle part of the first electrical connector 107 as the rotation center, each battery cell unit is rotated upward respectively. The middle part of the first electrical connector 107 is bent, and the two battery cell units are switched to a second state where the pole pieces are opposed to each other, and the two battery cell units in the second state are fixed.

[0054] Based on the above overall introduction, an exemplary structure of the battery module completed in arrangement S1 is as Figure 1 shown. Adjacent two battery cells 1 in each row of battery cell units are separated by a separator 2. Due to the arrangement of the first electrical connection piece and the second electrical connection piece, the two battery cell units are serially connected in a snake-like manner along one end of the two battery cells 1 arranged relatively, so as to realize the series connection between the battery cells 1.

[0055] In this embodiment, the number of battery cells 1 in each battery cell unit is an even number, and the two output pole pieces 100 of the battery module are respectively located at both ends of the same battery cell unit. Of course, if the number of battery cells 1 in the battery cell unit is an odd number, the two output pole pieces 100 are located on different battery cell units and are arranged relatively.

[0056] Combined Figure 1 As shown, to improve the use effect of the first electrical connection piece and the second electrical connection piece, recessed portions facing the battery cell 1 are respectively formed in the middle parts of the two. When switching from the first state to the second state, the first electrical connection piece will bend and deform left and right with the recessed portion as the center, which is beneficial to improving the forming effect and stability during use. The above-mentioned taking the middle part of the first electrical connector 107 as the rotation center means taking the recessed portion on the first electrical connector 107 as the rotation center, which is beneficial to improving the facing effect of the battery cell unit and has better safety.

[0057] To collect information of each battery cell 1, such as voltage and temperature information, to improve the safety of the battery cell 1. In this embodiment, step S20 is also provided between step S2 and step S3. Step S20 includes the arrangement of the acquisition board: the first acquisition board 103 electrically connected to each first electrical connector 107 respectively on a plurality of first electrical connectors 107, and the second acquisition board 102 is respectively connected to two columns of second electrical connectors 104.

[0058] The battery module arranged with the first acquisition board 103 and the second acquisition board 102 is as Figure 2 As shown, both the first acquisition board 103 and the second acquisition board 102 extend along the length direction of the battery cell unit. It can adopt the mature acquisition board structure in the prior art as long as it can collect the information of the battery cell 1. In addition, the first acquisition board 103 and one of the second acquisition boards 102 are located on the same battery cell unit, which is beneficial for the two battery cells 1 to switch from the first state to the second state.

[0059] In this embodiment, to further improve the safety of the double-row battery cell 1 module, step S20 also includes the arrangement of the pressure relief plate 106: a pressure relief plate 106 is provided on the top of each battery cell unit across the explosion-proof device 101 on each battery cell 1. A pressure relief groove extending along the length direction of itself is formed on the pressure relief plate 106, and through holes 1061 corresponding to each explosion-proof device 101 one by one are provided at the bottom of the pressure relief groove.

[0060] In terms of the detailed structure, as Figures 2 to 5 As shown, the explosion-proof device 101 in this embodiment is in the same direction as the pole piece. In this embodiment, the pressure relief plate 106 is arranged above each acquisition board via the side plates 405 on both sides. It can be made of insulating materials in the prior art, which is beneficial for the electrolyte to flow out through the pressure relief groove after the explosion-proof device 101 is damaged, thereby improving the safety of the battery module. The explosion-proof device 101 here can adopt an explosion-proof valve or the like provided on the top cover plate of the battery cell 1.

[0061] Step S20 in this embodiment further includes the arrangement of the insulating plate 105: The insulating plate 105 is disposed on one of the pressure relief plates 106, and in the second state, the insulating plate 105 forms a partition between the two battery cell units, and a pressure relief channel is formed between the insulating plate 105 and the corresponding pressure relief plate 106 respectively. As Figure 2 and Figure 5 shown in, the insulating plate 105 partitions the two battery cell units 2, achieving a good insulating effect, which is conducive to improving the safety of the battery module during use. The insulating plate 105 here can adopt a high-temperature resistant insulating plate 105 in the prior art, which has a mature product and is convenient for layout and implementation, and has a good high-temperature resistant insulating effect.

[0062] It should be noted here that, in this embodiment, in addition to the pole columns of the battery cell 1 and the explosion-proof device 101 being Figure 1 both located on the same side as shown in, the pole blocks on the battery cell 1 and the explosion-proof device 101 can also be located on opposite sides, or the explosion-proof device 101 and the pole blocks are located on two adjacent side faces with a 90° angle. Generally, it is for a structure where the battery cell 1 needs to be placed lying down. When the explosion-proof device 101 and the pole blocks are not on the same side face, a solution where the insulating plate 105 does not have high-temperature resistance is also feasible.

[0063] The processing method of the double-row battery module described in this embodiment enables each battery cell 1 to be connected in series through the first electrical connector 107 and the second electrical connector 104, and by rotating the two battery cell units, the pole blocks in the two battery cell units can be opposed, thereby switching the battery cell units from the first state to the second state, which is conducive to avoiding the problem of high potential difference on one side of the U-shaped circuit in the double-row battery module in the prior art, and is conducive to improving the safety of the double-row battery module.

[0064] Embodiment Two

[0065] This embodiment relates to a processing tooling for a double-row battery module, which is used to execute the processing method described in Embodiment One. Generally speaking, the processing tooling includes a base 3, and two supporting seats rotatably connected through rotating shafts 303 at both ends.

[0066] Each supporting seat has a supporting plate 4, and clamping plates 5 are oppositely arranged at both ends of the supporting plate 4. The battery cell units are respectively located on the supporting plate 4 and are clamped between the two clamping plates 5 in the first state. Two guiding parts extending in the vertical direction are provided on the base 3, and each rotating shaft 303 slides on the base 3 through the guiding parts respectively. When the two supporting seats receive an external force, the rotating shafts 303 slide vertically downward along the corresponding guiding parts, causing the two battery cell units to rotate towards each other and switch to the second state.

[0067] Based on the above overall introduction, the structure of the processing tooling in this embodiment in the initial state is as Figure 6 shown in, and the structure in the opposed state is asFigure 7 as shown. The specific structure of the processing tooling is described in Figure 8 and Figure 9 as shown. In this embodiment, the base 3 serves as a bearing foundation and should have good bearing stability. The length of the supporting plate 4 in the supporting seat is longer than the length of the battery cell unit, so as to have better ability to support the battery cell unit.

[0068] To achieve the rotational connection between the two supporting seats, connection arms 4011 extending upward are respectively provided at both ends of the supporting seat, and the rotating shaft 303 is connected between the corresponding two connection arms 4011. And the axis of the rotating shaft 303 is located above the upper pole piece of the battery cell 1. The distance between the axis of the rotating shaft 303 and the top surface of the battery cell 1 in the first state is H, then the distance between the two battery cells 1 in the second state is 2H.

[0069] As Figures 6 to 9 shown, end plates 401 are respectively provided at both ends of the supporting seat, each connection arm 4011 is respectively arranged on the end plate 401, and convex blocks facing each other are respectively provided at the free ends of the connection arms 4011. The rotating shaft 303 passes through the two overlapping convex blocks, so that the two supporting seats are rotationally connected via the rotating shaft 303.

[0070] The structures of the supporting plate 4, the end plate 401 and the connection arm 4011 here are simple and convenient for processing and forming. It should be noted that the distance between the axis of the rotating shaft 303 and the end cover of the battery cell 1 in this embodiment is half of the distance between the two battery cells 1 in the second state, so as to improve the space utilization rate of the battery module and reduce the space occupied by the battery module.

[0071] Still referring to Figure 6 shown, in this embodiment, a vertical plate 301 corresponding to the rotating shaft 303 is provided on the base 3, and the above-mentioned guiding part is a guiding hole 302 provided on the corresponding vertical plate 301. The rotating shaft 303 is inserted into the corresponding guiding hole 302 and can slide along the guiding hole 302. As a preferred implementation manner, the top of the guiding hole 302 is open, so as to facilitate the insertion of the rotating shaft 303 into the guiding hole 302, and thus has a good guiding effect. The structure of the guiding hole 302 here is simple, which is beneficial to guiding the moving rotating shaft 303, thereby improving the forming effect of the battery cell unit in the second state.

[0072] To improve the clamping effect and versatility of the clamping plate 5 on the battery cell unit. In this embodiment, the position of at least one clamping plate 5 on the supporting plate 4 is adjustable. For example, the positions of the clamping plates on the supporting plate 4 are all adjustable. As Figure 8As shown in the figure, mounting plates are respectively provided at both ends of the supporting plate 4, and operating rods 407 screwed to the mounting plates are inserted through the respective mounting plates. One end of each operating rod 407 facing the battery cell unit is rotatably connected to the clamping plate. When the operating rod 407 is rotated, the length between the mounting plate and the battery cell unit increases, thereby pushing the clamping plates closer to each other. This not only helps to improve the clamping effect on the battery cell unit but also facilitates the clamping of battery units of different length specifications, thus having better versatility.

[0073] It can be understood that in this embodiment, a scheme in which only one of the clamping plates 5 on each supporting seat is adjustable in position on the supporting plate 4 is also feasible.

[0074] In addition, to improve the stability of the clamping plate 5 during movement, in this embodiment, as Figure 8 shown in the figure, a guide rail 4012 extending along its own length direction is provided on the supporting plate 4, and a guide groove for guiding cooperation with the guide rail 4012 is provided at the bottom of the clamping plate 5. During the movement of the clamping plate 5, the cooperation between the guide groove and the guide rail 4012 makes the movement of the clamping plate 5 more stable and reliable.

[0075] Furthermore, in this embodiment, a plurality of rolling elements are provided at the bottom of the supporting seat. When the supporting seat rotates, the rolling elements can roll on the base 3, thereby supporting the supporting seat on the base 3. As Figure 6 and Figure 7 shown in the figure, a protrusion 402 extending along its own length direction is provided in the middle of the bottom surface of the supporting plate 4, and connecting shafts 403 extending along the length direction of the supporting plate 4 are respectively rotatably provided on both sides of the protrusion 402. The rolling elements are rollers 404 rotatably provided at intervals on the corresponding connecting shafts 403.

[0076] When the battery cell unit is in the first state, as Figure 6 shown in the figure, the rollers 404 and the protrusion 402 cooperate to support the supporting seat on the base 3 and keep the battery cell unit in the first state. During the process of the battery cell unit switching from the first state to the second state, the outermost row of rollers 404 will first leave the base 3. At this time, the other row of rollers 404 can maintain contact with the base 3 until the battery cell unit switches to the second state, as Figure 7 shown in the figure, each roller 404 is located outside the supporting seat.

[0077] In this embodiment, by providing a plurality of rolling elements, the rotating supporting seat can be supported, thereby improving the connection effect between the two battery cell units. Of course, in addition to using the rollers 404 as the rolling elements here, other structures with a rolling effect can also be used, such as using rollers 404, etc., as long as the usage requirements are met.

[0078] As a preferred embodiment, each supporting seat has a side plate 405 located outside the clamping plate 5. As shown in Figure 6 and Figure 8 shown, the two clamping plates 5, the supporting plate 4 and the side plate 405 jointly enclose a space for accommodating the battery cell unit. The side plate 405 here not only helps to improve the supporting effect of the supporting seat on the battery cell unit, but also can limit the battery cell unit in the width direction, thus having a better use effect.

[0079] In addition, in this embodiment, the supporting seat is provided with an operating part for receiving external force. As a preferred embodiment, as shown in Figure 6 shown, the operating part here is a handle 406 provided outside each side plate 405. Its structure is simple, easy to process and form, and at the same time it is convenient to apply external force on the handle 406. It can be understood that in addition to using the handle 406 on the side plate 405, the operating part in this embodiment can also adopt other structures convenient for applying force provided on the side plate 405. Or it is still feasible to set the operating part at other positions on the supporting seat, as long as the use requirements are met.

[0080] When the processing tooling described in this embodiment is in use, first perform step S1, that is, place the battery cell units on the supporting plate 4 respectively, and then clamp and fix the battery cell units by rotating the clamping plate 5. Each battery cell unit is in the first state. Then arrange the connection unit, the acquisition board, the pressure relief plate 106 and the insulating plate 105; then apply an operating force to the handle 406, so that each supporting seat rotates upward. At this time, the rotating shaft 303 slides downward along the guiding hole 302 until the middle of the first electrical connector 107 is bent, and the battery cell unit is in the second state. Each battery cell unit is clamped and supported on the base 3, and the clamping of the clamping plate 5 on the battery cell unit is released.

[0081] Then, rotate each supporting seat in the reverse direction, and the rotating shaft 303 slides upward along the guiding hole 302 until the battery cell unit is separated from the supporting seat. At this time, the second battery cell unit in the second state can be taken off. Then, the battery cell unit is fixed by potting and sealing, or the two battery cell units are fixed by using a tie strap wound around the two battery cell units. Recently, the two battery cell units in the second state are connected to structures such as the housing on the battery module, and finally a double-row battery module is processed.

[0082] When the processing tooling of the double-row battery module described in this embodiment drives the supporting seat to rotate by an external force, the rotating shaft 303 can slide up and down on the base 3 via the guiding part, which is beneficial to switch the battery cell unit from the first state to the second state, making the processing process of the double-row battery module easy to operate and beneficial to improving the processing efficiency of the double-row battery module.

[0083] In addition, this embodiment also relates to a battery module processed by using the processing method described in the first embodiment. The battery module has the pole blocks of two battery cell units facing each other and the battery cells 1 connected in series, which helps to avoid the U-shaped voltage loop in the prior art and the problem of high-voltage electromotive force at one end, thus helping to improve the safety of the battery module. At the same time, it also helps to reduce the space occupation and has good practicability.

[0084] The foregoing is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A processing tooling for a double-row battery module, characterized in that: The processing tooling is used to process two battery cell units arranged side by side. Each of the battery cell units includes a plurality of battery cells (1) and a plurality of separators (2) stacked alternately in sequence. In the first state, the pole blocks of each battery cell unit are arranged upward. In the second state, the pole blocks of each of the two battery cell units are arranged opposite to each other. The processing tooling includes a base (3) and two supporting seats rotatably connected via rotating shafts (303) at both ends. Each of the supporting seats has a supporting plate (4) and clamping plates (5) oppositely arranged at both ends of the supporting plate (4). The battery cell units are respectively located on the supporting plate (4) and are clamped between the two clamping plates (5) in the first state. Two guiding parts extending in the vertical direction are provided on the base (3). Each of the rotating shafts (303) slides on the base (3) via the guiding parts. When the two supporting seats receive an external force, the rotating shafts (303) slide vertically downward along the corresponding guiding parts, so that the two battery cell units rotate towards each other and switch to the second state. And in the second state, the battery cell units are supported on the base (3).

2. The processing tooling for a double-row battery module according to claim 1, characterized in that: Connection arms (4011) extending upward are respectively provided at both ends of the supporting seat. The rotating shaft (303) is connected between the corresponding two connection arms (4011). The guiding parts are guiding holes (302) provided on both sides of the base (3). The rotating shaft (303) is inserted into the corresponding guiding hole (302) and can slide along the guiding hole (302).

3. The processing tooling for a double-row battery module according to claim 1, characterized in that: A plurality of rolling bodies are provided at the bottom of the supporting seat. When the supporting seat rotates, the rolling bodies can roll on the base (3) to support the supporting seat on the base (3).

4. The processing tooling for a double-row battery module according to claim 1, characterized in that: The position of at least one of the clamping plates (5) on the supporting plate (4) is adjustable.

5. The processing tooling for a double-row battery module according to any one of claims 1 to 4, characterized in that: Each of the supporting seats has side plates (405) located outside the clamping plates (5). The two clamping plates (5), the supporting plate (4) and the side plates (405) together enclose a space for accommodating the battery cell units. And / or, an operating part for receiving the external force is provided on the supporting seat.

6. A processing method for a double-row battery module, characterized in that: The processing method uses the processing tooling for a double-row battery module according to any one of claims 1-5 to process a double-row battery module. The processing method includes the following steps: Step S1, arrangement and clamping of battery cell units: Stack a plurality of battery cells (1) and a plurality of separators (2) alternately in sequence to form two battery cell units arranged side by side, make each battery cell unit in the first state where the pole blocks are arranged upward, and clamp and fix both ends of each battery cell unit. Step S2. Arrangement of connection units: First electrical connectors (107) are respectively connected between adjacent two of the pole blocks on two relatively arranged battery cells (1). Along the length direction of the battery cell unit, a plurality of second electrical connectors (104) are arranged staggeredly on both sides of the first electrical connectors (107). Electrical connections between adjacent two of the pole blocks in the same column are formed through the second electrical connectors (104), so that the battery cells (1) in the two battery cell units are connected in series. Step S3. Opposing and fixing of the two battery cell units: With the middle part of the first electrical connector (107) as the rotation center, each battery cell unit is rotated upward respectively. The middle part of the first electrical connector (107) is bent, and the two battery cell units are switched to the second state where the pole blocks are opposed to each other, and the two battery cell units in the second state are fixed.

7. The processing method for a double-row battery module according to claim 6, characterized in that: There is also a step S20 between step S2 and step S3. The step S20 includes the arrangement of the acquisition boards: First acquisition boards (103) electrically connected to the respective first electrical connectors (107) are arranged on the plurality of first electrical connectors (107), and second acquisition boards (102) are respectively connected to two columns of the second electrical connectors (104).

8. The processing method for a double-row battery module according to claim 7, characterized in that: The step S20 also includes the arrangement of the pressure relief plates (106): Pressure relief plates (106) spanning the explosion-proof devices (101) on each of the battery cells (1) are arranged on the top of each battery cell unit. Pressure relief grooves extending along the length direction of the pressure relief plates (106) are formed on the pressure relief plates (106), and through holes (1061) corresponding to the explosion-proof devices (101) one by one are arranged at the bottoms of the pressure relief grooves.

9. The processing method for a double-row battery module according to claim 8, characterized in that: The step S20 also includes the arrangement of the insulating plates (105): The insulating plates (105) are arranged on one of the pressure relief plates (106), and when in the second state, the insulating plates (105) form a partition between the two battery cell units.

10. A double-row battery module, wherein the double-row battery module is processed by using the processing tooling for a double-row battery module according to any one of claims 1 to 5.

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