CN221596639U

CN221596639U - Lithium battery pack with connecting structure

Info

Publication number: CN221596639U
Application number: CN202323526546.4U
Authority: CN
Inventors: 黄利映; 刘劲飞
Original assignee: Shenzhen Jialimei Intelligent Technology Co ltd
Current assignee: Shenzhen Jialimei Intelligent Technology Co ltd
Priority date: 2023-12-22
Filing date: 2023-12-22
Publication date: 2024-08-23
Anticipated expiration: 2033-12-22

Abstract

The utility model belongs to the field of lithium battery packs, and discloses a lithium battery pack with a connecting structure, which comprises a plurality of lithium battery units, wherein each lithium battery unit comprises a lithium battery, a battery box, battery covers, a conducting component and a conducting component, two battery covers are symmetrically screwed on the openings at two ends of the battery box, a lithium battery is arranged in the battery box between the two battery covers, the battery covers comprise square cover plates and cylindrical screwed joints, the cylindrical screwed joints are screwed into the openings of the battery box, a positioning component is arranged in one side of each square cover plate, and each positioning component comprises a transverse L-shaped push rod and a positioning lock. The utility model is used for solving the problems that the battery pack is not easy to detach and the single battery is not easy to replace, has reasonable structural design and can realize quick installation and detachment.

Description

Lithium battery pack with connecting structure

Technical Field

The utility model relates to the technical field of lithium battery packs, in particular to a lithium battery pack with a connecting structure.

Background

The battery pack is widely applied to various technical fields as a power supply piece, the battery pack is used for connecting battery units, welding anode and cathode, placing the battery units in an appliance, wrapping the battery units by an insulating material, placing the battery units in equipment for use, and connecting and conducting the battery units by adopting tin welding lugs when splicing a plurality of lithium battery units, but the battery units are relatively troublesome to detach and install, the damage to tin welding sites is relatively large in later maintenance, the lugs are extremely easy to damage, the lugs are not available, the maintenance is troublesome, and even the lithium battery units damaging the lugs are discarded, so that the lithium battery is wasted. What is needed is a lithium battery pack that facilitates connection and conduction and does not require soldered connections to achieve quick installation and removal.

Disclosure of utility model

The utility model provides a lithium battery pack with a connecting structure, and aims to solve the problems that the battery pack in the prior art is not easy to detach and is not easy to replace a single battery.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

The lithium battery pack with the connecting structure comprises a plurality of lithium battery units which are spliced, wherein each lithium battery unit comprises a lithium battery, a battery box, battery covers, a conducting assembly and a conducting assembly, two ends of the battery box are opened, two battery covers are symmetrically screwed on the openings at the two ends, a lithium battery is arranged in the battery box between the two battery covers, each battery cover comprises a square cover plate and a cylindrical threaded connector, the cylindrical threaded connector is screwed into the opening of the battery box, a positioning assembly is arranged in one side of the square cover plate, each positioning assembly comprises a transverse L-shaped push rod and a positioning locking piece, a conducting jack is arranged in the other side of the square cover plate opposite to the positioning assembly, the conducting assembly is arranged in the cylindrical threaded connector, the conductive assembly comprises a semi-elliptical elastic conductive sheet, two fixed conductive copper bars and a movable conductive copper bar, wherein two ends of the semi-elliptical elastic conductive sheet are connected with inserting copper bars extending to two sides, notches for inserting the two copper bars are respectively arranged on the upper surfaces of the inner side ends of the fixed conductive copper bars, return springs are arranged between the ends of the inserting copper bars and the inner side walls of the notches, a slot is arranged in the middle of the lower surface of the cylindrical threaded connector, slots which extend inwards and are used for fixedly conducting the copper bars are formed in the two end walls of the slot, copper bar chucks are embedded in the lower surface of the horizontal L-shaped push rod and are exposed, the lower surface of the movable conductive copper bar contacts with the upper surface of one fixed conductive copper bar, and one end of the movable conductive copper bar is connected to a conductive jack.

Preferably, the positioning assembly comprises a positioning block and a spring, a groove is formed in the middle of the upper surface of the horizontal L-shaped push rod, the lower end of the spring is fixed in the groove, the lower surface of the positioning block is fixed on the upper surface of the spring, two strip-shaped lock holes matched with the positioning block are formed in the square cover plate, and the horizontal L-shaped push rod can be fixed through the strip-shaped lock holes.

Preferably, one end of the movable conducting copper bar is provided with a copper bar clamping head, the copper bar clamping head is sleeved at the end part of the horizontal L-shaped push rod, and the movable conducting copper bar clamping head can conduct electricity through the copper bar clamping head.

Preferably, the length of the groove is greater than the distance between the two ends of the semi-elliptical elastic conductive sheet and greater than the distance by 5-8mm.

Preferably, four corners of the square cover plate are respectively provided with a connecting jack, and when the square cover plate is spliced, the square cover plate is connected with the U-shaped connecting inserting rod at the position of the corresponding connecting jack of the adjacent side.

Preferably, the battery box is a square column box, and the sizes of two ends of the battery box are matched with those of the battery cover.

The beneficial effects of the utility model are as follows:

Put into the battery box with the battery lid of both ends and spiral, semi-oval elasticity conducting strip on two battery lids is with battery two poles of the earth butt respectively, pushes out through horizontal L type push rod, pushes in the conduction jack in the adjacent battery lid, realizes connecting and switches on, and it is convenient to connect and switch on, need not the soldering to connect, dismantles also relatively conveniently, and square apron is connected with the U type connection inserted bar in the corresponding connection jack position on adjacent limit, can fix lithium cell group, has realized that battery unit installs fast and dismantles.

Drawings

Fig. 1 is a schematic structural diagram of a lithium battery pack with a connection structure according to the present utility model;

FIG. 2 is a cross-sectional view of a battery cover according to the present utility model;

FIG. 3 is a schematic view of a horizontal L-shaped push rod according to the present utility model;

FIG. 4 is a cross-sectional view of a transverse L-shaped push rod according to the present utility model;

fig. 5 is a splice diagram of a lithium battery unit according to the present utility model;

fig. 6 is a schematic view of a battery cover according to the present utility model.

In the figure: 1. a battery cover; 101. a square cover plate; 102. a cylindrical threaded joint; 11. conducting the jack; 12. semi-elliptical elastic conductive sheet; 13. a return spring; 14. a strip-shaped lock hole; 15. fixing and conducting the copper bars; 16. a battery case; 17. a connection jack; 18. inserting copper bars; 19. a strip groove; 2. horizontally placing an L-shaped push rod; 21. moving and conducting the copper bars; 211. a copper bar clamping head; 22. a reset lever; 23. a positioning block; 24. and (3) a spring.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

Referring to fig. 1-6, a lithium battery pack with connection structure, it forms to splice including a plurality of lithium battery unit, lithium battery unit includes lithium battery, battery case 16, battery cover 1, switches on subassembly and conductive component, the both ends opening of battery case 16 just has two battery covers 1 and two battery covers 1 between the battery case 16 that the symmetry connects soon, battery cover 1 includes square apron 101 and cylindrical screwed joint 102, cylindrical screwed joint 102 screwed into the opening of battery case 16, be equipped with locating component in one side of square apron 101, locating component includes horizontal L push rod 2 and location latch, be equipped with in the opposite side of square apron 101 and switch on jack 11 relatively to locating component, conductive component sets up in cylindrical screwed joint 102, conductive component includes semi-elliptical elastic conductive piece 12, two fixed copper bars 15 and moves copper bars 21 that switch on, the both ends of semi-elliptical elastic conductive piece 12 are to the grafting copper bar 18 that both sides stretched, two fixed copper bars 15 are equipped with on the inboard end and are used for inserting copper bars that insert respectively in the surface and insert the copper bar between the copper bar surface of two side wall surfaces of inserting into the jack 21, the copper bar is equipped with the notch that the copper bar is equipped with down and is equipped with one of two and is connected with the copper bars of the copper bar 21, and the copper bar is inserted into the notch of the copper bar is connected to the inside surface of the jack 21, and the copper bar is equipped with one of the copper bar is connected with the notch of the copper bar is connected with the copper bar and the copper bar is connected with the copper bar 13.

Putting a lithium battery into a battery box 16, screwing two battery covers 1 at two ends, respectively abutting and conducting semi-elliptical elastic conducting strips 12 in the two battery covers 1 with the anode and the cathode of the lithium battery, arranging return springs 13 at the end parts of inserted copper bars 18 at two ends of the semi-elliptical elastic conducting strips 12, when the two ends of the lithium battery are contacted and extruded, deforming the semi-elliptical elastic conducting strips 12, slightly expanding the two sides and extruding the return springs 13 to ensure that the semi-elliptical elastic conducting strips 12 are in extrusion contact with the two ends of the lithium battery, after the lithium battery is disassembled, pushing the semi-elliptical elastic conducting strips 12 to return to the original shape, pushing out a horizontal L-shaped push rod 2, pushing into conducting jacks 11 of the adjacent battery covers, and conducting and connecting current through the current of the lithium battery with the semi-elliptical elastic conducting strips 12, the movable conducting copper bars 21 and the copper bar clamping heads 211.

The positioning assembly comprises a positioning block 23 and a spring 24, a groove is formed in the middle of the upper surface of the horizontal L-shaped push rod 2, the lower end of the spring 24 is fixed in the groove, the lower surface of the positioning block 23 is fixed on the upper surface of the spring 24, and two strip-shaped lock holes 14 matched with the positioning block 23 are formed in the square cover plate 101.

When the battery pack is not connected, the vertical rod of the horizontal L-shaped push rod 2 is positioned at the center of the battery cover 1, the positioning block 23 acted by the spring 24 is clamped in the corresponding bar-shaped lock hole 14, the horizontal L-shaped push rod 2 is pushed to a position far away from the center of the battery cover 1 during connection, the positioning block 23 is clamped in the corresponding bar-shaped lock hole 14 to prevent the problem of poor contact caused by displacement of the horizontal L-shaped push rod 2, and the reset rod 22 is inserted into the bar-shaped lock hole 14 to move the horizontal L-shaped push rod 2 towards the center of the battery cover 1 at the same time when the horizontal L-shaped push rod 2 is required to be retracted. At least two springs 24 are arranged at two ends below the positioning block 23 respectively, so that stable lifting or pressing of the positioning block is ensured.

One end of the movable conductive copper bar 21 is provided with a copper bar clamping head 211, and the copper bar clamping head 211 is sleeved at the end part of the horizontal L-shaped push rod 2.

Can be connected to adjacent movable conductive copper bars 21 by copper bar clamps 211. The copper bar clamping head 211 can ensure that the moving conducting copper bar 21 at the end part does not tilt downwards, and can also ensure the connection reliability.

The length of the strip groove 19 is longer than the interval between the two ends of the semi-elliptic elastic conductive sheet 12 and longer than the distance of 5-8mm.

The semi-elliptical elastic conductive sheet 12 is convenient to transversely displace when being abutted by a lithium battery.

Four corners of the square cover plate 101 are respectively provided with a connecting jack 17, and when the square cover plate 101 is spliced, the square cover plate 101 is connected with U-shaped connecting inserting rods at positions corresponding to the connecting jacks 17 on adjacent sides.

The battery pack can be fixed to prevent loosening.

The battery box 16 is a square column box, and the two ends of the battery box 16 are matched with the battery cover 1 in size. The whole concatenation of being convenient for is stable.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims

1. A lithium battery pack having a connection structure, characterized in that: including a plurality of lithium cell concatenation forms, lithium cell includes lithium cell, battery case (16), battery lid (1), switches on subassembly and conductive component, the both ends opening of battery case (16) and the symmetry connect soon on both ends opening have two battery lids (1) and be equipped with the lithium cell in battery case (16) between two battery lids (1), battery lid (1) include square apron (101) and cylindrical screwed joint (102), cylindrical screwed joint (102) screw access is to in the opening of battery case (16), be equipped with locating component in one side of square apron (101), locating component is equipped with in the opposite side of horizontal L type push rod (2) and locating lock piece including horizontal L type push rod (11), conductive component sets up in cylindrical screwed joint (102), conductive component includes semi-elliptical elasticity conducting strip (12), two fixed copper bars (15) and removes copper bars (21) that switch on, copper bars (18) of semi-elliptical elasticity conducting strip both sides are equipped with two inner side surfaces (18) are equipped with down the clearance between the copper bars (19) respectively, the copper bars (19) are equipped with down the tip (13) are inserted to the fixed surface between two, the utility model discloses a copper bar, including strip groove (19), fixed copper bar (15) that switches on, be equipped with inwards extension on the both ends wall of strip groove (19) and be used for fixed slot that switches on copper bar (15) male, the lower surface of horizontal L type push rod (2) is embedded to have copper bar chuck (211) and it exposes, the removal switches on copper bar (21) lower surface and one of them fixed copper bar (15) upper surface contact, another the one end that switches on copper bar (21) is switched in and is switched on jack (11).

2. The lithium battery pack having a connection structure according to claim 1, wherein: the positioning assembly comprises a positioning block (23) and a spring (24), a groove is formed in the middle of the upper surface of the horizontal L-shaped push rod (2), the lower end of the spring (24) is fixed in the groove, the lower surface of the positioning block (23) is fixed on the upper surface of the spring (24), and two strip-shaped lock holes (14) matched with the positioning block (23) are formed in the square cover plate (101).

3. The lithium battery pack having a connection structure according to claim 1, wherein: one end of the movable conducting copper bar (21) is provided with a copper bar clamping head (211), and the copper bar clamping head (211) is sleeved at the end part of the horizontal L-shaped push rod (2).

4. The lithium battery pack having a connection structure according to claim 1, wherein: the length of the strip groove (19) is larger than the distance between the two ends of the semi-elliptic elastic conducting plate (12) and is larger than the distance by 5-8mm.

5. The lithium battery pack having a connection structure according to claim 1, wherein: four corners of the square cover plate (101) are respectively provided with a connecting jack (17), and when the square cover plate (101) is spliced, the square cover plate (101) is connected with the U-shaped connecting inserting rod at the positions of the corresponding connecting jacks (17) of the adjacent sides.

6. The lithium battery pack having a connection structure according to claim 1, wherein: the battery box (16) is a square column box, and the sizes of two ends of the battery box (16) are matched with those of the battery cover (1).