A square aluminum shell battery module integration and welding integrated tooling

Abstract

The utility model discloses a square aluminum shell battery module integrated and welded tooling, including a bottom plate, a fixed plate and a mounting plate are arranged on the bottom plate, a longitudinal push screw is arranged through the mounting plate, one end of the longitudinal push screw is rotatably connected with a pre-tightening plate, the pre-tightening plate is located between the fixed plate and the mounting plate, and side baffles are also arranged on the fixed plate and the mounting plate, a transverse push screw is arranged through the side baffle, one end of the transverse push screw is arranged with a side push plate, the side push plate is located between the pre-tightening plate and the side baffle, and a welding plate is arranged above the side push plate and the pre-tightening plate, and the welding plate is detachably connected to the fixed plate and the mounting plate respectively. The side push plate and the pre-tightening plate are adjusted by screws, and the side push plate can ensure the flatness of the battery cell stacking; the pre-tightening plate can pre-tighten the battery cell, which is convenient for fixing by steel belts; the locking pressure head can not only press the busbar and the pole, but also ensure the welding quality; it can be compatible with a variety of sizes, and the switching is flexible, which improves the work efficiency.

Description

Technical Field

[0001] The utility model belongs to the technical field of battery core welding processing, and in particular relates to a square aluminum shell battery module integration and welding integrated tooling. Background Art

[0002] Energy storage technology refers to storing energy under certain conditions so that it can be released when needed to achieve energy balance and optimal utilization. With the rapid development and application of new energy, the application of energy storage technology has also received widespread attention and promotion. Energy storage technology plays an important role in the field of new energy. With the continuous advancement of science and technology and the expansion of application scenarios, the application of energy storage technology will become more extensive and in-depth.

[0003] At present, the new energy storage industry uses battery modules for energy storage. The battery module is made by fixing multiple battery cells together and then using a laser welding process to weld the top pole of the battery cell to the bus (copper bus or aluminum bus) in series. In order to save production costs, a small number of sample trials are generally required in the early stage of module product development. Due to the lack of corresponding tools, the existing trials only perform simple fixation and welding of the battery cells, which causes the module to fall apart due to loose fixation in the later experimental testing stage. If the contact between the pole and the bus is not tight, it will lead to loose welding. During the test and inspection process, the bus with loose welding will fall off the pole, which can easily cause a short circuit in the core and cause a fire.

[0004] Therefore, we need to design a square aluminum shell battery module integration and welding integrated tooling to solve these problems. Utility Model Content

[0005] The problem to be solved by the utility model is to provide a square aluminum shell battery module integration and welding integrated tooling, and to design a battery module trial production fixing tooling to solve the problems of unstable fixation and loose welding of poles and busbars that are prone to occur during the existing battery module trial production.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0007] A square aluminum shell battery module integrated and welded tooling comprises a base plate, a fixed plate and a mounting plate are provided on the base plate, a longitudinal push screw is provided on the mounting plate, one end of the longitudinal push screw is rotatably connected to a pre-tightening pressure plate, the pre-tightening pressure plate is located between the fixed plate and the mounting plate, side baffles are also provided on the fixed plate and the mounting plate, a transverse push screw is provided on the side baffle, one end of the transverse push screw is provided with a side push plate, the side push plate is located between the pre-tightening pressure plate and the side baffle, a welding pressure plate is provided above the side push plate and the pre-tightening pressure plate, the welding pressure plate is detachably connected to the fixed plate and the mounting plate respectively, and a plurality of locking pressure heads are provided on the welding pressure plate.

[0008] Preferably, a slide rail is fixedly provided on the bottom plate, a slider is fixedly provided on the pre-tightening plate, and the pre-tightening plate is slidably mounted on the bottom plate through the cooperation between the slider and the slide rail.

[0009] Preferably, a plurality of guide shafts are fixedly provided on the side push plate, the free ends of the guide shafts slide through the side baffle, and the free ends of the guide shafts located on the same side of the transverse push screw are connected via a connecting piece.

[0010] Preferably, a slide rod is fixedly provided on the pre-tightening plate, and a free end of the slide rod passes through the mounting plate.

[0011] Preferably, insulating plates are fixedly arranged on the opposite surfaces of the fixing plate and the pre-tightening plate, and reinforcing plates are also arranged on the fixing plate and the mounting plate.

[0012] Preferably, the locking pressure head is mounted on the welding pressure plate by means of bolts, and a spring is also sleeved on the bolts, and the spring is located above the locking pressure head.

[0013] Preferably, a frame is arranged below the bottom plate, wheels are arranged at the bottom of the frame, a plurality of positioning blocks are arranged at the top of the frame, and the bottom plate is located between the plurality of positioning blocks.

[0014] Preferably, a pad is fixedly disposed on the bottom plate, and a plurality of mounting grooves are disposed on the pad.

[0015] Preferably, locking fasteners are fixedly provided on the fixing plate and the mounting plate, and the welding pressure plate is detachably connected to the fixing plate and the mounting plate via the locking fasteners.

[0016] The advantages and positive effects of the utility model are:

[0017] The utility model is provided with a side push plate and a pre-tightening plate which are adjusted by a screw rod. The side push plate can be used to adjust the flatness of the stacking of the battery cells, thereby ensuring the aesthetics of the battery module; the battery cells can be pre-tightened by the pre-tightening plate, which is convenient for fixation by a steel belt, and the fixation of the battery cells is more secure; the hollow locking pressure head on the welding pressure plate can not only press the busbar and the pole, but also will not affect the welding of the pole and the busbar, thereby ensuring the welding quality; it can be compatible with the integration and welding of square aluminum shell battery modules of various sizes, and can be flexibly switched in the sample trial production stage, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 It is a schematic diagram of the use state of the utility model;

[0020] Figure 2 It is a schematic diagram of the position structure of each component of the utility model;

[0021] Figure 3 It is a schematic diagram of the installation position of the side baffle of the utility model;

[0022] Figure 4 It is a schematic diagram of the locking pressure head of the utility model.

[0023] The following are the descriptions of the reference numerals:

[0024] 1. Frame; 2. Bottom plate; 3. Pad; 4. Spring; 5. Mounting groove; 6. Fixing plate; 7. Insulating plate; 8. Slide rail; 9. Preload plate; 10. Mounting plate; 11. Longitudinal push screw; 12. Slide bar; 13. Side baffle; 14. Side push plate; 15. Guide shaft; 16. Horizontal push screw; 17. Connecting piece; 18. Slider; 19. Bolt; 20. Positioning block; 21. Welding plate; 22. Handle; 23. Steel belt; 24. Locking fastener; 25. Reinforcement plate; 26. Wheel; 27. Locking pressure head. DETAILED DESCRIPTION

[0025] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model 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 cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0027] The utility model is further described below in conjunction with the accompanying drawings:

[0028] Example 1: Figure 1-Figure 4 As shown, a square aluminum shell battery module integration and welding integrated tooling includes a base plate 2, characterized in that: a fixed plate 6 and a mounting plate 10 are arranged on the base plate 2, a longitudinal push screw 11 is arranged through the mounting plate 10, one end of the longitudinal push screw 11 is rotatably connected to a pre-tightening plate 9, the pre-tightening plate 9 is located between the fixed plate 6 and the mounting plate 10, and a side baffle 13 is also arranged on the fixed plate 6 and the mounting plate 10, a transverse push screw 16 is arranged through the side baffle 13, one end of the transverse push screw 16 is arranged with a side push plate 14, the side push plate 14 is an insulating material with sufficiently high strength, the side push plate 14 is located between the pre-tightening plate 9 and the side baffle 13, a welding plate 21 is arranged above the side push plate 14 and the pre-tightening plate 9, the welding plate 21 is detachably connected to the fixed plate 6 and the mounting plate 10 respectively, and a plurality of locking pressure heads 27 are arranged on the welding plate 21.

[0029] A slide rail 8 is fixedly provided on the base plate 2, and a slider 18 is fixedly provided on the pre-tightening plate 9. The pre-tightening plate 9 is slidably installed on the base plate 2 through the cooperation between the slider 18 and the slide rail 8. The cooperation between the slide rail 8 and the slider 18 can not only bear the weight of the pre-tightening plate 9, but also reduce the friction between the pre-tightening plate 9 and the pad 3 when moving, thereby extending the service life of the equipment. Moreover, the slide rail 8 and the slider 18 are in contact through the ball bearings, so there is little shaking and high precision when moving, which can make the movement of the pre-tightening plate 9 more stable.

[0030] A plurality of guide shafts 15 are also fixedly provided on the side thrust plate 14. The free ends of the guide shafts 15 slide through the side baffle 13, and the free ends of the guide shafts 15 on the same side of the transverse thrust screw 16 are connected by a connecting piece 17. The side thrust plate 14 can be supported by the guide shafts 15. The connecting piece 17 at the end of the guide shaft 15 is a metal material with sufficiently high strength. After the guide shafts 15 are connected, the synchronous linear motion of the plurality of guide shafts 15 can be ensured, thereby avoiding lateral deviation or jamming when the side thrust plate 14 moves.

[0031] A slide bar 12 is fixedly provided on the pre-tightening plate 9, and the free end of the slide bar 12 passes through the mounting plate 10. The slide bar 12 can be used to prevent the slide bar 12 on the pre-tightening plate 9 from ensuring the stability of the pre-tightening plate 9 when it moves, and at the same time avoid lateral deviation or jamming of the pre-tightening plate 9.

[0032] Among them, nuts and linear bearing sleeves are also installed on the mounting plate 10 and the side baffle plate 13, wherein the nut on the side baffle plate 13 matches the transverse push screw 16, the guide shaft 15 passes through the linear bearing sleeve on the side baffle plate 13, the nut on the mounting plate 10 matches the longitudinal push screw 11, and the slide rod 12 passes through the linear bearing sleeve on the mounting plate 10.

[0033] An insulating plate 7 is fixedly arranged on the opposite surfaces of the fixing plate 6 and the pre-tightening plate 9. A reinforcing plate 25 is also arranged on the fixing plate 6 and the mounting plate 10. The reinforcing plate 25 can provide stable support for the mounting plate 10 and the fixing plate 6 when the battery cell is squeezed.

[0034] The locking head 27 is installed on the welding platen 21 by bolts 19. The platen is made of insulating material with high enough structural strength to ensure mutual insulation between the connecting heads. The locking head 27 is made of brass, and a hollow circular working area is set in the middle, which is also the laser welding position. Because when connecting the battery pole, the laser will pass through the working area, and the welding process will generate a lot of heat. In addition, the locking head 27 needs to repeatedly press the busbar and the pole, so brass with good thermal conductivity and wear resistance is selected. There is a bolt 19 through hole on the locking head 27, which is connected to the welding platen 21 through the bolt 19. The bolt 19 is mounted with a spring 4, which is located above the locking head 27. Its function is to better press the welding position tightly to avoid poor welding caused by uneven welding surface.

[0035] A frame 1 is arranged below the bottom plate 2. The frame 1 is welded from a metal material with sufficient strength and can provide support for the bottom plate 2. Wheels 26 are arranged at the bottom of the frame 1. The wheels 26 are standard parts, which are convenient for personnel to move the frame 1. A plurality of positioning blocks 20 are arranged on the top of the frame 1. The bottom plate 2 is located between the plurality of positioning blocks 20 to fix the bottom plate 2 to prevent the bottom plate 2 from sliding off the frame 1.

[0036] A pad 3 is also fixedly arranged on the base plate 2. The pad 3 is made of an insulating material with sufficiently high strength to further enhance the insulation performance. The pad 3 is connected to the base plate 2 by bolts 19. A plurality of mounting grooves 5 are arranged on the pad 3 to facilitate the placement of the steel belt 23 and to integrate and fix battery cells of different sizes after stacking.

[0037] The fixing plate 6 and the mounting plate 10 are both fixedly provided with locking fasteners 24 , and the welding pressure plate 21 is detachably connected to the fixing plate 6 and the mounting plate 10 via the locking fasteners 24 , so as to facilitate the installation and removal of the welding pressure plate 21 .

[0038] The working process of this embodiment is as follows: when in use, you first need to open the locking fastener 24, remove the welding pressure plate 21 from the fixed plate 6 and the mounting plate 10 through the handle 22, and then rotate the longitudinal push screw 11 to drive the pre-tightening pressure plate 9 to move toward the mounting plate 10 through the longitudinal push screw 11, and then adjust the position of the side push plate 14 by rotating the transverse push screw 16 to ensure the flatness of the battery cell stacking. The guide shaft 15 fixed on the side push plate 14 and connected to each other by the connecting piece 17 can ensure that the side push plate 14 does not deviate or get stuck when moving. It should be noted that the length of the side push plate 14 does not exceed the distance between the fixed plate 6 and the opposite surface of the pre-tightening pressure plate 9 after it is fitted with the mounting plate 10, that is, when the pre-tightening pressure plate 9 is moved to fit with the mounting plate 10 under the drive of the total push screw, the transverse push screw 16 can push the side push plate 14 into between the pre-tightening pressure plate 9 and the fixed plate 6.

[0039] The length of the transverse push screw 16 does not exceed the distance between the side baffle 13 and the opposite surface of the pre-tightening plate 9 to ensure that the side push plate 14 does not enter between the pre-tightening plate 9 and the fixed plate 6, thereby avoiding damage caused by mutual squeezing between the pre-tightening plate 9 and the side push plate 14 when the pre-tightening plate 9 moves.

[0040] After the side thrust plate 14 and the pre-tightening plate 9 are adjusted to their positions, the steel belt 23 is connected end to end and then installed on the pad 3 through the mounting groove 5 on the pad 3. The steel ring formed by the steel belt 23 can be inserted into the gap between the pads 3, so the size of the steel ring made of the steel belt 23 can be adjusted according to the size of the battery module composed of the battery cells.

[0041] After placing the steel ring made of steel belt 23, the battery cells are stacked one by one. When stacking the battery cells, all the battery cells are in contact with the side push plate 14 when necessary. This is to ensure the flatness of the battery cells after stacking. After the battery cells are stacked, the horizontal push screw 16 is rotated in the opposite direction to make the horizontal push screw 16 drive the side push plate 14 to move toward the side baffle 13 until the side push plate 14 moves to fit the side baffle 13 and stops. This can avoid the pre-tightening plate 9 from being squeezed against the side push plate 14 when moving toward the fixed plate 6, causing damage to the device. Then the longitudinal push screw 11 is rotated to push the pre-tightening plate 9 toward the fixed plate 6 through the longitudinal push screw 11 to start squeezing the battery cells. When the overall size of all the battery cells after stacking is squeezed to meet the design requirements, the steel ring made of steel belt 23 in the mounting groove 5 on the pad 3 is put on the stacked battery cells after squeezing to fix the battery cells.

[0042] Then put the busbar on the top of the battery cell, and install the welding pressure plate 21 to the fixing plate 6 through the locking fastener 24. Because the locking pressure head 27 is provided with a through hole and the hole diameter is larger than the diameter of the bolt 19, the bolt 19 is connected to the welding pressure plate 21 after passing through the through hole, so that the locking pressure head 27 is sleeved on the bolt 19 through the through hole, and the spring 4 above the pressure plate will squeeze the locking pressure head 27 downward. Therefore, when the welding pressure plate 21 is fixed, all the locking pressure heads 27 will be located above the battery cell pole, and the elastic force of the spring 4 will push the busbar downward, so that the busbar can fit tightly with the pole, fix the busbar, and the locking pressure head 27 is as follows Figure 4 As shown, the middle part is a hollow structure, which is also convenient for welding the busbar and the pole.

[0043] After the bus and welding are completed, open the locking fastener 24, remove the welding pressure plate 21, and then put the steel ring made of steel belt 23 on the top of the extruded battery cell, and then rotate the longitudinal push screw 11 in the opposite direction to make the pre-tightening pressure plate 9 approach the mounting plate 10, and then remove the welded and fixed battery cell from the pad 3, and wrap the aluminum shell on the outside of the battery cell to protect the battery cell.

[0044] In this embodiment, gaps are reserved above and below the insulating plate 7 installed on the fixing plate 6 and the pre-tightening plate 9. The pre-tightening plate 9 is supported by the slider 18 and the slide rail 8, and there is also a gap between the pre-tightening plate 9 and the pad 3, which is convenient for the steel ring made of the steel belt 23 to fit and fix the battery cell.

[0045] The above is a detailed description of an embodiment of the utility model, but the content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A square aluminum shell battery module integration and welding tool, comprising a bottom plate (2), characterized in that: The bottom plate (2) is provided with a fixing plate (6) and a mounting plate (10), a longitudinal push screw (11) is provided through the mounting plate (10), one end of the longitudinal push screw (11) is rotatably connected to a pre-tightening plate (9), the pre-tightening plate (9) is located between the fixing plate (6) and the mounting plate (10), the fixing plate (6) and the mounting plate (10) are also provided with side baffles (13), and a transverse push screw is provided through the side baffles (13). (16), a side thrust plate (14) is provided at one end of the transverse thrust screw (16), and the side thrust plate (14) is located between the pre-tightening pressure plate (9) and the side baffle plate (13), and a welding pressure plate (21) is provided above the side thrust plate (14) and the pre-tightening pressure plate (9), and the welding pressure plate (21) is detachably connected to the fixing plate (6) and the mounting plate (10), respectively, and a plurality of locking pressure heads (27) are provided on the welding pressure plate (21).

2. According to claim 1, a square aluminum shell battery module integration and welding integrated tooling, characterized in that: A slide rail (8) is fixedly arranged on the base plate (2), a slider (18) is fixedly arranged on the pre-tightening plate (9), and the pre-tightening plate (9) is slidably mounted on the base plate (2) through the cooperation between the slider (18) and the slide rail (8).

3. According to claim 1, a square aluminum shell battery module integration and welding integrated tooling, characterized in that: A plurality of guide shafts (15) are fixedly arranged on the side thrust plate (14), and the free ends of the guide shafts (15) slide through the side baffle plate (13), and the free ends of the plurality of guide shafts (15) located on the same side of the transverse thrust screw (16) are connected via a connecting piece (17).

4. According to claim 1, a square aluminum shell battery module integration and welding tool is characterized in that: A slide rod (12) is fixedly arranged on the pre-tightening plate (9), and the free end of the slide rod (12) passes through the mounting plate (10).

5. The square aluminum shell battery module integration and welding integrated tooling according to claim 1, characterized in that: An insulating plate (7) is fixedly arranged on the opposite surfaces of the fixing plate (6) and the pre-tightening plate (9), and a reinforcing plate (25) is also arranged on the fixing plate (6) and the mounting plate (10).

6. The square aluminum shell battery module integration and welding integrated tooling according to claim 1, characterized in that: The locking pressure head (27) is mounted on the welding pressure plate (21) via a bolt (19); a spring (4) is also sleeved on the bolt (19); and the spring (4) is located above the locking pressure head (27).

7. The square aluminum shell battery module integration and welding integrated tooling according to claim 1, characterized in that: A vehicle frame (1) is arranged below the bottom plate (2), a wheel (26) is arranged at the bottom of the vehicle frame (1), a plurality of positioning blocks (20) are arranged at the top of the vehicle frame (1), and the bottom plate (2) is located between the plurality of positioning blocks (20).

8. The square aluminum shell battery module integration and welding integrated tooling according to claim 1, characterized in that: A backing plate (3) is also fixedly arranged on the bottom plate (2), and a plurality of mounting grooves (5) are arranged on the backing plate (3).

9. The square aluminum shell battery module integration and welding integrated tooling according to claim 1, characterized in that: The fixing plate (6) and the mounting plate (10) are both fixedly provided with locking fasteners (24), and the welding pressure plate (21) is detachably connected to the fixing plate (6) and the mounting plate (10) via the locking fasteners (24).

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