A soft pack battery pack

Abstract

A soft-pack battery pack comprises a plurality of soft-pack battery cells (1) and a splicable shell (2) and a locking rod (3) connecting two splicable shells (2); the top of the soft-pack battery cell (1) is provided with two pole ears (4) extending outward; the pole ears (4) are elastic metal sheets; the pole ears (4) are composed of a fixing part and a connecting part; a hook head (5) is provided at the end of the connecting part; a connecting hole (6) for use with the hook head (5) is provided on the fixing part; and the width of the fixing part is greater than the width of the connecting part. The present invention has the advantages that each soft-pack battery is placed in an independent space and will not cause compression deformation between each other; the battery pack can be added and removed conveniently and quickly; and a single soft-pack battery can be quickly installed and disassembled.

Description

Technical Field

[0001] The present invention relates to the technical field of batteries, and in particular to a soft-pack battery pack. Background Art

[0002] At present, soft-pack batteries are increasingly used in the market due to their light weight, large capacity and flexible design. In order to obtain better battery performance, multiple soft-pack batteries need to be assembled to form a battery pack. Most of the existing battery packs adopt simple bundling, and the electrodes are connected in series through a wire, which can easily cause backlog and deformation between each other. In the case of damage, the soft-pack batteries need to be disassembled and reassembled. The installation and disassembly are complicated, which can easily cause the soft-pack batteries to deform and affect the battery life. Summary of the invention

[0003] The purpose of the present invention is to provide a soft-pack battery pack to solve the above-mentioned shortcomings.

[0004] The present invention comprises a plurality of soft-packed cells, a splicable shell and a locking rod connecting two splicable shells. The top of the soft-packed cell is provided with two pole ears extending outward. The pole ears are elastic metal sheets. The pole ears are composed of a fixing part and a connecting part. A hook is provided at the end of the connecting part. A connecting hole used in conjunction with the hook is opened on the fixing part. The width of the fixing part is greater than the width of the connecting part.

[0005] A T-shaped slot is provided at the lower part of one end of the splicable shell, one end of the T-shaped slot is closed and the other end is open, a T-shaped plug block used in conjunction with the T-shaped slot is provided at the lower part of the other end of the splicable shell, a screw locking hole is provided on the T-shaped slot at the open end, and a threaded hole corresponding to the screw locking hole is provided at the bottom of the T-shaped plug block, and the lower parts of the two splicable shells are connected by the T-shaped plug block and the T-shaped slot, and are locked by screws;

[0006] A pair of locking rod installation grooves are respectively opened at the top of both ends of the splicable shell, a screw locking hole is opened on one side of the locking rod installation groove, and threaded holes corresponding to the screw locking holes are respectively opened at both ends of the locking rod, and the upper parts of the two splicable shells are locked by the locking rod and the screw;

[0007] At least two battery cell installation grooves are provided on the splicable shell, and a battery cell fixing seat is provided in the battery cell installation groove. The battery cell fixing seat is an inverted U-shaped seat, and a pole ear avoidance hole is provided on the top of the battery cell fixing seat. Inwardly bent battery cell support plates are respectively provided at both ends of the opening of the battery cell fixing seat, and outwardly protruding clamping platforms are respectively provided at both ends of the top of the battery cell fixing seat. Buckles used in conjunction with the clamping platforms are respectively provided on both sides of the battery cell installation groove of the splicable shell, and the soft-pack battery cell is inserted into the battery cell installation groove of the splicable shell through the battery cell fixing seat and is locked by the cooperation of the clamping platform and the buckle, and the pole ears of each soft-pack battery cell are connected in sequence from front to back.

[0008] The thickness of the front and rear end plates of the splicable shell is half the thickness of the partitions of two adjacent battery cell installation slots, and the splicable shell is provided with multiple groups of heat dissipation holes penetrating the partitions on the left and right sides.

[0009] Card platform avoidance grooves are respectively provided on both sides of the battery cell installation groove, the clip is hinged in the avoidance groove through a pin shaft, and the clip is provided with a card slot used in conjunction with the card platform.

[0010] A chamfer is arranged at an opening of a groove wall on one side of the locking rod installation groove, and a picking groove is arranged on one side of the locking rod.

[0011] The fixing part of the pole ear is welded by double layers of elastic metal sheets.

[0012] The present invention has the advantages that each soft-pack battery is placed in an independent space and will not cause squeezing and deformation to each other, the battery pack can be added and removed conveniently and quickly, and a single soft-pack battery can be installed and disassembled quickly. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the present invention.

[0015] Figure 2 It is a schematic diagram of the structure of the splicable shell.

[0016] Figure 3 It is a schematic diagram of the soft-pack battery structure.

[0017] Figure 4 It is a schematic diagram of the structure of the battery cell fixing seat.

[0018] Figure 5 Schematic diagram of the locking rod structure. DETAILED DESCRIPTION

[0019] As shown in the accompanying drawings, the present invention includes a plurality of soft-packed cells 1, a splicable shell 2, and a locking rod 3 connecting two splicable shells 2. The top of the soft-packed cell 1 is provided with two pole ears 4 extending outward. The pole ears 4 are elastic metal sheets. The pole ears 4 are composed of a fixing part and a connecting part. A hook 5 is provided at the end of the connecting part. A connecting hole 6 used in conjunction with the hook 5 is opened on the fixing part. The width of the fixing part is greater than the width of the connecting part.

[0020] A T-shaped slot 7 is provided at the lower part of one end of the splicable housing 2, one end of the T-shaped slot 7 is closed, and the other end is open. A T-shaped plug 8 used in conjunction with the T-shaped slot 7 is provided at the lower part of the other end of the splicable housing 2, a screw locking hole is provided on the T-shaped slot 7 at the open end, and a threaded hole corresponding to the screw locking hole is provided at the bottom of the T-shaped plug 8. The lower parts of the two splicable housings 2 are connected by the T-shaped plug 8 and the T-shaped slot 7, and are locked by screws;

[0021] A pair of locking rod installation grooves are respectively opened at the top of both ends of the splicable housing 2, a screw locking hole is opened on one side of the locking rod installation groove, and threaded holes corresponding to the screw locking holes are respectively opened at both ends of the locking rod 3. The upper parts of the two splicable housings 2 are locked by the locking rod 3 and the screw;

[0022] At least two battery cell installation grooves are provided on the splicable shell 2, and a battery cell fixing seat 10 is provided in the battery cell installation groove. The battery cell fixing seat 10 is an inverted U-shaped seat, and a pole ear 4 avoidance hole is provided on the top of the battery cell fixing seat 10. Inwardly bent battery cell support plates 11 are respectively provided at both ends of the opening of the battery cell fixing seat 10, and outwardly protruding clamping platforms 12 are respectively provided at both ends of the top of the battery cell fixing seat 10. Buckles 13 used in conjunction with the clamping platforms 12 are respectively provided on both sides of the battery cell installation groove of the splicable shell 2. The soft-pack battery 1 is inserted into the battery cell installation groove of the splicable shell 2 through the battery cell fixing seat 10, and is locked by the cooperation of the clamping platform 12 and the buckle 13. The pole ears 4 of each soft-pack battery 1 are connected in sequence from front to back.

[0023] The thickness of the front and rear end plates 16 of the splicable housing 2 is half the thickness of the partitions 15 of two adjacent battery cell installation slots. The splicable housing 2 is provided with multiple groups of heat dissipation holes 17 penetrating the partitions 15 on the left and right sides.

[0024] Avoidance grooves for the clamping platform 12 are respectively provided on both sides of the battery cell installation groove. The buckle 13 is hinged in the avoidance groove through a pin shaft. The buckle 13 is provided with a clamping groove used in conjunction with the clamping platform 12 .

[0025] A chamfer is provided at the opening of the groove wall on one side of the locking rod installation groove, and a picking groove 20 is provided on one side of the locking rod 3.

[0026] The fixing portion of the pole tab 4 is formed by welding a double layer of elastic metal sheets.

[0027] Working method and principle: the number of splicable shells 2 can be increased or decreased as needed. The lower parts of two adjacent splicable shells 2 are connected by T-shaped slots 7 and T-shaped plugs 8, and then the T-shaped slots 7 and T-shaped plugs 8 are locked by screws. One end of the T-shaped slot 7 is closed and the other end is open, which is convenient for positioning during installation. The upper parts of the two splicable shells 2 are locked by two locking rods 3 and screws, which are convenient for installation and disassembly. The soft-pack battery cell 1 is placed in the battery cell holder 10, and is inserted into the battery cell installation slot of the splicable shell 2 through the battery cell holder 10. When the battery cell holder 10 is inserted, the card platform 12 presses the buckle 13 downward, and the buckle 13 is flipped inward and locked with the card platform 12. When disassembling, the buckle 13 is pressed outward by external force to separate the buckle 13 from the card platform 12, which is the same as the buckle structure of the computer memory stick. After the soft-pack battery cell 1 is fixed, since the pole ear 4 is an elastic metal sheet with good elasticity, the pole ear 4 is bent from front to back in sequence so that the hook 5 of the front pole ear 4 is hooked on the connecting hole 6 of the rear pole ear 4. Under the reaction force of the elastic metal sheet, the hook 5 and the connecting hole 6 fit tightly, and the width of the fixed part is greater than the width of the connecting part. When bending, the deformation of the fixed part is small, and the bending part is mainly concentrated on the connecting part. The fixed part of the pole ear 4 is welded by a double layer of elastic metal sheet to increase its anti-bending performance.

[0028] The heat dissipation hole 17 facilitates heat dissipation of the soft-pack battery cell 1. A chamfer is provided at the opening of the groove wall on one side of the locking rod installation groove, and a pick-up groove 20 is provided on one side of the locking rod 3. When disassembling, after the screw is loosened, a flat-blade screwdriver is inserted into the pick-up groove 20 to pick out the locking rod 3 upward.

Claims

1. A soft pack battery pack, characterized in that It comprises a plurality of soft-packed battery cells (1), a splicable shell (2) and a locking rod (3) connecting two splicable shells (2); the top of the soft-packed battery cells (1) is provided with two pole ears (4) extending outward; the pole ears (4) are elastic metal sheets; the pole ears (4) are composed of a fixing portion and a connecting portion; a hook (5) is provided at the end of the connecting portion; a connecting hole (6) for use with the hook (5) is provided on the fixing portion; and the width of the fixing portion is greater than the width of the connecting portion; A T-shaped slot (7) is provided at the lower part of one end of the splicable shell (2), one end of the T-shaped slot (7) is closed and the other end is open, a T-shaped plug (8) used in conjunction with the T-shaped slot (7) is provided at the lower part of the other end of the splicable shell (2), a screw locking hole is provided on the T-shaped slot (7) at the open end, a threaded hole corresponding to the screw locking hole is provided at the bottom of the T-shaped plug (8), and the lower parts of the two splicable shells (2) are connected by the T-shaped plug (8) and the T-shaped slot (7), and are locked by screws; A pair of locking rod installation grooves are respectively formed at the top of both ends of the spliceable housing (2), a screw locking hole is formed on one side of the locking rod installation groove, and threaded holes corresponding to the screw locking holes are respectively formed at both ends of the locking rod (3), and the upper parts of the two spliceable housings (2) are locked by the locking rod (3) and the screw; At least two battery cell installation grooves are formed on the splicable shell (2), and a battery cell fixing seat (10) is provided in the battery cell installation groove. The battery cell fixing seat (10) is an inverted U-shaped seat, and a pole ear (4) avoidance hole is formed on the top of the battery cell fixing seat (10). Inwardly bent battery cell support plates (11) are respectively provided at both ends of the opening of the battery cell fixing seat (10), and outwardly protruding clamping platforms (12) are respectively provided at both ends of the top of the battery cell fixing seat (10). Buckles (13) used in conjunction with the clamping platforms (12) are respectively provided on both sides of the battery cell installation groove of the splicable shell (2). The soft-pack battery cell (1) is inserted into the battery cell installation groove of the splicable shell (2) through the battery cell fixing seat (10), and is locked by the clamping platform (12) and the buckle (13). The pole ears (4) of each soft-pack battery cell (1) are connected in sequence from front to back. The thickness of the two front and rear end plates (16) of the splicable housing (2) is half the thickness of the partition plates (15) of the two adjacent battery cell installation slots. The splicable housing (2) is provided with a plurality of groups of heat dissipation holes (17) penetrating the partition plates (15) on the left and right sides. A card platform (12) avoidance groove is respectively formed on both sides of the battery cell installation groove, and the buckle (13) is hinged in the avoidance groove through a pin shaft, and a card slot for use with the card platform (12) is formed on the buckle (13).

2. A soft pack battery pack according to claim 1, characterized in that A chamfer is provided at an opening of a groove wall on one side of the locking rod installation groove, and a picking groove (20) is provided on one side of the locking rod (3).

3. The soft pack battery pack according to claim 1, characterized in that The fixing portion of the pole lug (4) is formed by welding a double layer of elastic metal sheets.

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