Restraining clamp tool for aluminum shell lithium battery

Abstract

The utility model discloses a restraining clamp tool for an aluminum shell lithium battery, which relates to the technical field of lithium batteries and comprises a side fixing component, a connecting component, a side fixing component top end plate and a hole end plate, the connecting component comprises a guide rod and a restraining connecting plate, and the top end plate and the hole end plate are two groups of opposite clamping plate mechanisms. And three groups of restraint connecting plates are mounted at the bottoms below the top end plate and the hole end plate. According to the utility model, the design of the restraining tool for the square batteries with different sizes and models is realized, the problem that in different production processes in the prior art, the same tool is used for meeting the requirement of battery cell size remodeling for restraining is solved, the movable restraining partition plates are arranged in the restraining tray, the battery grooves are formed among the restraining sheets, the restraining and the unrestraining of the batteries are conveniently realized, and the restraining efficiency is improved. And the production conditions of batteries with different sizes and models are compatible, and the uniformity of whole-process constraint precision is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium batteries, and particularly relates to a restraint fixture tooling for an aluminum shell lithium battery. Background Art

[0002] The square lithium battery is a type of battery. Lithium ion batteries are classified into square lithium batteries, cylindrical lithium batteries and button lithium batteries according to their shapes; lithium batteries are classified into aluminum shell lithium batteries, steel shell lithium batteries and soft pack batteries according to their outer packaging materials; and are classified into lithium cobaltate, lithium iron phosphate, lithium manganate and lithium polymer according to their cathode materials. Square shell batteries are widely used in the fields of power, energy storage, 3C digital, etc. due to their high working voltage, high specific energy, long cycle life and small self-discharge.

[0003] In the prior art, formation is a very important process in the production of lithium ion batteries. Battery formation, also known as battery forming, refers to a series of charging and activation processes carried out on the battery before it is officially used. This process has different effects on different types of batteries.

[0004] When forming lithium ion batteries, a restraint tray is required. In common restraint trays, lithium ion batteries and multiple partitions are interspersed with each other. This arrangement cannot fix the lithium ion batteries safely and stably on the restraint tray, and there is a risk of collision during the transfer of lithium ion batteries in each process, which not only poses a threat to the safety of operators, but also damages the lithium ion batteries. Therefore, we propose a restraint fixture tooling for an aluminum shell lithium battery. Content of the Utility Model

[0005] (1) Technical Problem to be Solved

[0006] Aiming at the deficiencies of the prior art, the utility model provides a restraint fixture tooling for an aluminum shell lithium battery, which solves the technical problem of stable restraint of the battery.

[0007] (2) Technical Solution

[0008] To achieve the above objectives, the utility model is realized through the following technical solutions:

[0009] A restraint fixture tooling for an aluminum shell lithium battery, comprising

[0010] a restraint mechanism, which includes a side fixing component and a connection component.

[0011] The side fixing component includes a top plate and a hole end plate, and the connection component includes a guide rod and a restraint connecting plate. The top plate and the hole end plate are two sets of opposite clamping plate mechanisms. Three restraint connecting plates are installed at the bottom below the top plate and the hole end plate. In addition, a guide rod is provided on the opposite side of the top plate and the hole end plate to assist in fixing the top plate and the hole end plate.

[0012] Preferably, a mounting hole is provided in the middle of the connecting block. The connecting block passes through and is installed outside two groups of guide rods. The connecting block is arranged between the top plate and the restraint top plate. The end-side restraint plate and several intermediate restraint partition plates are sleeved on the connecting block assembly and can move along the guide rods. A shaping block is provided at the upper end of the intermediate restraint partition plate.

[0013] Preferably, insertion blocks are provided between adjacent connecting blocks. The insertion blocks use a mortise and tenon structure for connecting the two-side support moving limit blocks. Multiple connecting blocks are spliced front and back to control the restraint position within a certain range.

[0014] Preferably, a restraint top plate is provided between the hole end plate and the top plate above the restraint connecting plate, and a restraint block is provided between the hole end plate and the restraint top plate.

[0015] Preferably, a slot with a larger upper part and a smaller lower part is provided in the middle of the connecting block. The depth, width, and length of the slot can be adapted to different thicknesses of battery separator plates.

[0016] Preferably, restraint springs are sleeved on eight guide rods for equally spacing and opening the restraint partition plates. Two folding handles are fixed on each of the two end faces of the top plate and the hole end plate. The top of the restraint partition plate for the thin battery separator plate has a "I"-shaped structure with a thinner middle part and thicker two sides. The "I"-shaped structure can be compatible with the quick change of type after directly inserting a U-shaped insertion plate in the reverse direction on the separator plate. The middle part of the "I"-shaped structure at the top of the restraint partition plate is shorter than the two sides.

[0017] Preferably, after the restraint partition plate is assembled with the guide rod, the bottom of the restraint partition plate has a semi-circular groove structure, which is assembled with the guide rod in a matching manner and is fixed to the top plate and the hole end plate with screws. The two ends of the guide rod are respectively fixed to the hole end plate and the top plate of the tray.

[0018] Preferably, the restraint top plate is provided with a sliding bearing for fixing with the hole end plate, and an external device pushes the restraint top plate to clamp the tray.

[0019] Preferably, the position for placing the restraint partition plate between the connecting blocks is replaced with a heat dissipation partition plate. Heat dissipation partition plates are provided between adjacent connecting blocks. A shaping block is provided at the upper end of the heat dissipation partition plate, and heat dissipation holes are provided inside the shaping block.

[0020] Preferably, a lining is nested on the restraint partition plate. The restraint partition plate is fixed to the end-side restraint partition plate through three screw holes at the top of the end side. Batteries are placed in the space between the linings. The heat dissipation partition plate uses an internal plastic structure with a heat dissipation metal wrapped on the surface.

[0021] (III) Beneficial effects

[0022] The utility model realizes the design of a square battery restraint tooling for different sizes and models, which is used to solve the problem that in the prior art, in different production processes, the same tooling is used to meet the cell size change for restraint. There is a movable restraint partition in the restraint tray, and battery slots are formed between the restraint pieces, which is convenient for realizing the restraint and release of the battery, compatible with the production of batteries of different sizes and models, and realizing the unity of the restraint accuracy in all processes. That is, when the same restraint tooling is used in all the restraint processes of the formation operation, it can ensure that the force, contact form, contact area, etc. of the restrained cells are consistent, ensure the versatility of the restraint tooling, reduce the number of restraint fixture toolings, and realize rapid changeover. Brief Description of the Drawings

[0023] The above description is only an overview of the technical solution of the utility model. In order to be able to understand the technical means of the utility model more clearly and implement it according to the content of the specification, the following takes the preferred embodiments of the utility model and combines with the drawings to describe in detail as follows.

[0024] Figure 1 Three-dimensional structure of a restraint fixture tooling for an aluminum shell lithium battery of the utility model Figure 1 ;

[0025] Figure 2 Three-dimensional structure of a restraint fixture tooling for an aluminum shell lithium battery of the utility model Figure 2 ;

[0026] Figure 3 Three-dimensional structure of a restraint fixture tooling for an aluminum shell lithium battery of the utility model Figure 3 ;

[0027] Figure 4 Side view of a restraint fixture tooling for an aluminum shell lithium battery of the utility model;

[0028] Figure 5 Structure diagram of the restraint partition in a restraint fixture tooling for an aluminum shell lithium battery of the utility model;

[0029] Figure 6 Three-dimensional structure of a restraint fixture tooling for an aluminum shell lithium battery of the utility model Figure 4 ;

[0030] Figure 7 Structure diagram of the heat dissipation partition in a restraint fixture tooling for an aluminum shell lithium battery of the utility model.

[0031] Legend: 1. Top plate; 2. Hole end plate; 3. Guide rod; 4. Connecting block; 5. Restraint partition; 6. Lining; 7. Restraint block; 8. Slot; 9. Left frame; 10. Restraint connecting plate; 11. Plug-in block; 12. Heat dissipation partition; 13. Restraint top plate; 14. Heat dissipation hole; 15. Molding block. Detailed Description of the Preferred Embodiments

[0032] By providing a restraint fixture tooling for aluminum-shell lithium batteries in the embodiments of the present application, the problem of stable battery restraint in the prior art is solved. Using the same tooling to meet the restraint for the change of cell size, the restraint tray is provided with movable restraint partitions, and battery slots are formed between the restraint sheets, which facilitates the realization of battery restraint and release of restraint.

[0033] Embodiment 1

[0034] As Figures 1-3 shown, the technical solution in the embodiments of the present application for solving the above problems of the battery restraint tooling is generally as follows:

[0035] In view of the problems existing in the prior art, the present utility model provides a restraint fixture tooling for aluminum-shell lithium batteries,

[0036] including: a restraint mechanism, which includes a side fixing component and a connecting component,

[0037] The side fixing component includes a top end plate 1 and a hole end plate 2, the connecting component includes a guide rod 3 and a restraint connecting plate 10. The top end plate 1 and the hole end plate 2 are two sets of opposite clamping plate mechanisms. Three restraint connecting plates 10 are installed at the bottom below the top end plate 1 and the hole end plate 2. In addition, a guide rod 3 is provided on the opposite side of the top end plate 1 and the hole end plate 2 to assist in fixing the top end plate 1 and the hole end plate 2 through the guide rod 3.

[0038] A restraint top plate 13 is arranged between the hole end plate 2 and the top end plate 1 above the restraint connecting plate 10, and a restraint block 7 is arranged between the hole end plate 2 and the restraint top plate 13 to physically limit the positions between the restraint partitions 5.

[0039] An installation hole is arranged in the middle of the connecting block 4. The connecting block 4 passes through and is installed outside the two sets of guide rods 3. The connecting block 4 is arranged between the top end plate 1 and the restraint top plate 13. The end-side restraint plate 9 and several intermediate restraint partitions 5 are sleeved on the connecting block 4 assembly and can move along the guide rod 3. A cell space for the cell to be inserted is provided between adjacent moving restraint partition 5 assemblies. A shaping block 15 is arranged at the upper end of the intermediate restraint partition 5.

[0040] The surface of the guide rod assembly 3 is chrome-plated and smooth. The restraint partition 5 effectively reduces the friction of the movement of the connecting block 4. The two ends of the guide rod 3 are respectively fixed to the hole end plate 2 and the top end plate 1 of the tray.

[0041] An inner lining 6 is nested on the restraint partition 5. The inner lining of the restraint partition 5 can be quickly disassembled and replaced manually. It can be removed and replaced by clamping upwards and lifting. The end side of the restraint partition 5 is fixed to the end restraint partition through three screw holes on the top. Batteries are placed in the space between the inner liners 6. By quickly replacing liners 6 of different sizes, different spatial spacings can be compatible with batteries of different models and sizes without adjusting the production equipment, thereby achieving rapid changeover, reducing the number of tooling, and reducing the intensity of personnel changeover.

[0042] The middle part of the connecting block 4 is provided with a slot 8 which is larger at the top and smaller at the bottom. The depth, width and length of the slot 8 can be adapted to battery separators of different thicknesses, so as to achieve the purpose of rapid type change and compatibility without the need to adjust the capacity separation equipment (the existing compatible replacement of batteries of other thicknesses requires replacement of the fixture or replacement of the separator after overall removal, which results in high cost and long time consumption respectively);

[0043] like Figure 4 As shown, a plug-in block 11 is provided between adjacent connection blocks 4, and the plug-in block 11 is a mortise and tenon structure for connecting the movable limit blocks on both sides, and multiple plug-in blocks 11 are spliced ​​front and back to achieve the purpose of controlling the restraint position within a certain range, so that the battery pressure will not be too large and the position of the positive and negative poles of the battery docking device is more controllable. The existing non-hard connection structure generally uses a spring, which can achieve the purpose of controlling pressure and gap, but there is a problem of incomplete opening due to inconsistent spring force, and the constraint has a certain floating, and it is not easy to control the constraint accuracy;

[0044] like Figure 5 As shown, the top of the thin battery partition of the restraining partition 5 is an "I" structure that is thin in the middle and thick on both sides. The "I" structure can be compatible with the quick change of the U-shaped plug-in plate after being directly inserted in reverse on the partition. The top of the restraining partition 5 is an "I" structure that is thin in the middle and thick on both sides. The middle part is shorter than the two sides to avoid squeezing the battery weld at the top after the U-shaped plug-in plate is inserted in reverse.

[0045] The top plate 1 and the bottom of the hole end plate 2 are fixed by a restraint connecting plate 10, and the eight external guide rods 3 make the whole stable without looseness. The eight guide rods are sleeved with restraint springs for equidistantly opening the restraint partitions 5. Two folding handles are fixed on both end surfaces of the top plate 1 and the hole end plate 2, which is convenient for personnel to manually move the restraint tray in special circumstances.

[0046] After the restraint partition 5 is assembled with the guide rod 3, the semicircular groove structure at the bottom of the restraint partition 5 is assembled with the guide rod 3. The surface of the guide rod 3 is chrome-plated and smooth, and is fixed with the top plate 1 and the hole end plate 2 by screws. When the restraint partition 5 slides left and right, the friction is greatly reduced, ensuring that the restraint clamp is flexible to tighten and open.

[0047] The restraint top plate 13 is provided with a sliding bearing for fixing with the hole end plate 2. The external device pushes the restraint top plate 13 to clamp the tray. The restraint top plate 13 evenly distributes the thrust onto the plane of the restraint partition 5, achieving the unity of the restraint accuracy in all processes. That is, when the same restraint tooling is used in all restraint processes of the entire forming operation, it can ensure that the force, contact form, contact area, etc. for restraining the battery cells are consistent. On the basis of ensuring the versatility of the restraint tooling, the problem of reducing the restraint accuracy error of the battery cells is solved.

[0048] Embodiment 2

[0049] As Figures 6-7 shown, based on Embodiment 1, in the process of using the battery in this embodiment of the present application, certain heat may be generated, affecting the use environment of the battery. Correspondingly, a heat dissipation structure is designed to optimize heat dissipation. The general idea is as follows:

[0050] The position for placing the restraint partition 5 between the connection blocks 4 is replaced with a heat dissipation partition 12. The heat dissipation partitions 12 are arranged between adjacent connection blocks 4. A shaping block 15 is arranged at the upper end of the heat dissipation partition 12, and heat dissipation holes 14 are arranged inside the shaping block 15. The heat dissipation holes 14 are vertical grid through-hole partitions. When the long and thin battery is in use, under the premise of occupying the heat dissipation space on both sides, the heat dissipation effect of the battery can be ensured.

[0051] During use, the heat dissipation partition 12 adopts a structure with internal plastic and a heat dissipation metal coated on the surface (either plastic or all-metal is used in the prior art. The former has the risk of excessive battery temperature during high-current charging and discharging, and the latter has problems such as too high manufacturing cost and inconvenient handling).

[0052] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the present invention.

Claims

1. A restraint fixture tooling for an aluminum-shell lithium battery, characterized in that: A restraint mechanism, which includes a side fixing component and a connecting component. The side fixing component includes a top plate (1) and a hole end plate (2), and the connecting component includes a guide rod (3) and a restraint connecting plate (10). The top plate (1) and the hole end plate (2) are two sets of opposite clamping plate mechanisms. Three restraint connecting plates (10) are installed at the bottom below the top plate (1) and the hole end plate (2). In addition, a guide rod (3) is arranged on the opposite side of the top plate (1) and the hole end plate (2). An installation hole is provided in the middle of the connecting block (4). The connecting block (4) passes through and is installed outside the two guide rods (3). The connecting block (4) is arranged between the top plate (1) and the restraint top plate (13). The end-side restraint plate (9) and several intermediate restraint partition plates (5) are sleeved on the connecting block (4) assembly and can move along the guide rod (3).

2. The restraint fixture tooling for an aluminum shell lithium battery as described in claim 1, characterized in that: A restraint spring is sleeved on the guide rod (3) for equidistantly opening the restraint partition plates (5). A shaping block (15) is arranged at the upper end of the intermediate restraint partition plate (5).

3. The restraint fixture tooling for an aluminum-shell lithium battery as described in claim 2, characterized in that: Insertion blocks (11) are arranged between adjacent connecting blocks (4). The insertion blocks (11) use a mortise and tenon structure for connecting the two-side support moving limit blocks.

4. The restraint fixture tooling for an aluminum-shell lithium battery as described in claim 1, wherein: A restraint top plate (13) is arranged above the restraint connecting plate (10) between the hole end plate (2) and the top plate (1). A restraint block (7) is arranged between the hole end plate (2) and the restraint top plate (13).

5. The restraint fixture tooling for an aluminum-shell lithium battery as described in claim 2, characterized in that: A large-top and small-bottom slot (8) is arranged in the middle of the connecting block (4). The depth, width, and length of the slot (8) can be adapted to different thickness battery partition plates.

6. The restraint fixture tooling for an aluminum-shell lithium battery according to claim 2, characterized in that: Two folding handles are fixed on each end face of the top plate (1) and the hole end plate (2). The top of the restraint partition plate (5) for the thin battery partition plate has an "I"-shaped structure with a thin middle and thick sides. The "I"-shaped structure can be compatible with the quick change of the model after directly inserting a U-shaped insertion plate reversely on the partition plate. The middle part of the top of the restraint partition plate (5) with an "I"-shaped structure is shorter than the two sides.

7. The restraint fixture tooling for an aluminum shell lithium battery according to claim 2, characterized in that: After the restraint partition plate (5) is assembled with the guide rod (3), the bottom of the restraint partition plate (5) has a semi-circular groove structure, which is assembled with the guide rod (3) in a matching manner and fixed to the top plate (1) and the hole end plate (2) with screws. The two ends of the guide rod (3) are respectively fixed to the hole end plate (2) and the top plate (1) of the tray.

8. The restraint fixture tooling for an aluminum shell lithium battery as described in claim 4, characterized in that: The restraint top plate (13) is provided with a sliding bearing for fixing with the hole end plate (2). An external device pushes the restraint top plate (13) to clamp the tray.

9. The restraint fixture tooling for an aluminum-shell lithium battery according to claim 2, characterized in that: The position for placing the restraint partition plate (5) between the connecting blocks (4) is replaced with a heat dissipation partition plate (12). Heat dissipation partition plates (12) are arranged between adjacent connecting blocks (4). A shaping block (15) is arranged at the upper end of the heat dissipation partition plate (12). Heat dissipation holes (14) are arranged inside the shaping block (15).

10. The restraint fixture tooling for an aluminum-shell lithium battery according to claim 9, characterized in that: An inner liner (6) is nested on the restraint partition plate (5). The restraint partition plate (5) is fixed to the end-side restraint partition plate through three screw holes at the top on the end side. A battery is placed in the space between the inner liners (6). The heat dissipation partition plate (12) has a structure with an internal plastic and a heat dissipation metal coated on the surface.

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