CN219553758U

CN219553758U - Lithium battery shell

Info

Publication number: CN219553758U
Application number: CN202320525541.0U
Authority: CN
Inventors: 张兴良
Original assignee: Power Manufacturing Co ltd Zhejiang Bonn
Current assignee: Power Manufacturing Co ltd Zhejiang Bonn
Priority date: 2023-03-14
Filing date: 2023-03-14
Publication date: 2023-08-18
Anticipated expiration: 2033-03-14

Abstract

The utility model relates to a lithium battery shell, which relates to the technical field of lithium batteries and comprises a shell and an end cover, wherein a placing groove for placing a power supply core is formed in the shell, the end cover covers an opening of the placing groove, two mounting grooves are formed in the end cover, mounting blocks are arranged in the mounting grooves, contact pieces are fixedly connected to the mounting blocks, a fixing groove is formed in the side wall of the mounting block, penetrating holes aligned with the fixing groove are formed in the side wall of the mounting groove, and fixing columns are simultaneously inserted into the penetrating holes and the fixing groove. The utility model has the effect of reducing the occurrence of the condition that a certain contact piece is damaged and the whole end cover needs to be replaced.

Description

Lithium battery shell

Technical Field

The utility model relates to the technical field of lithium batteries, in particular to a lithium battery shell.

Background

Lithium batteries are a type of batteries using lithium metal or lithium alloy as a positive/negative electrode material and using a nonaqueous electrolyte solution, and are currently widely used in various fields such as electric tools, electric bicycles, electric automobiles, aerospace and the like.

In the related art, when the lithium battery is used, an electric core composed of a diaphragm, electrolyte and the like is required to be placed in a shell and is subjected to sealing treatment through a cover plate, and an anode contact piece and a cathode contact piece are arranged on the cover plate so as to be connected with the inside of the shell, so that the lithium battery can be subjected to charge and discharge treatment.

In view of the above-mentioned related art, the inventor believes that when a contact piece on an end cover is damaged, a worker needs to replace the entire end cover, and the overall replacement cost is high, and there is room for improvement.

Disclosure of Invention

In order to reduce the occurrence of damage to a certain contact piece and the need of replacing the whole end cover, the utility model provides a lithium battery shell.

The utility model provides a lithium battery shell which adopts the following technical scheme:

the utility model provides a lithium battery casing, includes casing and end cover, set up the standing groove that is used for supplying power core to place on the casing, the end cover covers the standing groove opening, set up two mounting grooves on the end cover, all be provided with the installation piece in the mounting groove, equal fixedly connected with contact piece on the installation piece, the fixed slot has been seted up on the lateral wall of installation piece, set up the hole of wearing that aligns with the fixed slot on the lateral wall of mounting groove, wear to establish the hole with peg graft simultaneously in the fixed slot has the fixed column.

Through adopting above-mentioned technical scheme, when damage appears in a certain contact piece on the end cover, the user takes out in wearing to establish downthehole fixed column on the installation piece that will correspond, and the user can take out the installation piece in the mounting groove this moment to realize changing alone of a certain contact piece, the user need not to change the processing to whole end cover this moment, when needs install the installation piece, the user pegs in wearing to establish downthehole and fixed slot simultaneously with the fixed column to install the installation piece on the end cover.

Optionally, the fixed slot bottom surface fixedly connected with spring, fixed column fixed connection keeps away from the one end of fixed slot bottom surface on the spring, the spring has natural state and compressed state, when the spring is in natural state, the one end of keeping away from the spring on the fixed column is pegged graft in wearing to establish the downthehole, when the spring is in compressed state, the fixed column contracts in the fixed slot completely.

Through adopting above-mentioned technical scheme, when needs are installed the installation piece, use personnel to extrude the fixed column so that the fixed column contracts completely in the fixed slot, so that the installation piece can normally peg graft to the mounting groove in, when wearing to establish the hole and the fixed slot aligns, keep away from fixed one end grafting on the fixed column in wearing to establish downthehole, realized the installation of installation piece on the end cover, improved the stability of installation piece on the end cover, when needs change a certain installation piece, use personnel extrude the fixed column through wearing to establish the hole, the installation piece can remove relative mounting groove this moment, in order to realize the dismantlement of installation piece on the end cover.

Optionally, a plug is inserted in the penetrating hole in an interference manner, and the plug covers the opening end face of the penetrating hole.

Through adopting above-mentioned technical scheme, the setting of end cap has reduced other debris and has got into and wear to establish downthehole and make the fixed column to the condition emergence that is close to the direction removal of fixed slot bottom surface and shrink in the fixed slot.

Optionally, a force application column is arranged at one end, far away from the fixed column, of the plug.

Through adopting above-mentioned technical scheme, the user accessible application of force post is comparatively convenient takes out the end cap in wearing to establish the downthehole to the user takes out the processing to the end cap.

Optionally, a guiding surface is obliquely arranged at one end, far away from the fixation, of the fixing column, and the guiding surface faces the end face where the bottom surface of the mounting groove is located.

Through adopting above-mentioned technical scheme, when the user controlled installation piece pegged graft in to the mounting groove, guide surface and the terminal surface butt at mounting groove opening place continue to apply force to the installation piece, and the guide surface receives the extrusion force of mounting groove lateral wall, and this extrusion force can decompose into the component towards the fixed slot bottom surface under the effect of guide surface to make the fixed column shrink in the fixed slot completely, thereby be convenient for the user carries out the installation operation to the installation piece.

Optionally, the fixed slot bottom surface is provided with the guide arm, the spring housing is located the guide arm lateral wall, the limiting groove that supplies the guide arm to peg graft along fixed slot depth direction to slide is offered to the terminal surface that is connected with the spring on the fixed column.

Through adopting above-mentioned technical scheme, when the spring is compressed, the guide arm can carry out radial spacing to the spring to reduce the spring and appear the too big condition of transverse bending range by the in-process of fixed column extrusion, thereby reduce the spring and appear the possibility of elasticity inefficacy.

Optionally, be provided with the piece that slides on the lateral wall of fixed column, offer the spout that supplies the piece that slides to peg graft along fixed groove depth direction on the lateral wall of fixed groove, be provided with the magnetism piece of inhaling mutually with the piece magnetism that slides on the lateral wall of spout.

Through adopting above-mentioned technical scheme, when the fixed column moves to the direction of keeping away from the fixed slot bottom surface, the magnetism is inhaled the piece mutually with sliding block magnetism to make the fixed column peg graft fast to wear to establish downthehole, at this moment under the effect of the suction force of piece with sliding block is inhaled to the magnetism, the fixed column is difficult for removing relative fixed slot, has further improved the stability of fixed column in the fixed slot, simultaneously, has reduced the fixed column and has fallen out the fixed slot completely and make the condition emergence that the spring was prolonged excessively, has improved the security of spring when using.

Optionally, the terminal surface that is provided with the contact piece on the installation piece has seted up the grafting groove, the atress groove has been seted up on the lateral wall in grafting groove.

Through adopting above-mentioned technical scheme, when needs take out the installation piece from the mounting groove in, the user accessible spliced groove and the comparatively convenient application of force to the installation piece in atress groove to the user takes out the processing to the installation piece.

Optionally, an installation identifier is arranged on the end cover.

Through adopting above-mentioned technical scheme, the setting of installation sign is convenient for use personnel learn the position condition of negative pole and positive pole in the casing to the user personnel of being convenient for install the operation to the end cover.

In summary, the present utility model includes at least one of the following beneficial technical effects:

1. the arrangement of the mounting block and the mounting groove realizes the independent replacement of a certain contact piece so as to reduce the occurrence of the condition that the whole end cover is required to be replaced due to the damage of a certain contact piece;

2. the fixing column is stably inserted into the penetrating hole due to the arrangement of the magnetic attraction block, so that the stability of the fixing column in use is improved;

3. the setting of spliced groove and atress groove is convenient for the user to exert a force to the installation piece to the user of being convenient for takes out the processing to the installation piece.

Drawings

Fig. 1 is a schematic view of a lithium battery case according to an embodiment of the present utility model;

fig. 2 is an exploded view of a lithium battery case according to an embodiment of the present utility model;

FIG. 3 is a cross-sectional view of a mounting block and end cap of an embodiment of the present utility model.

Reference numerals illustrate: 1. a housing; 2. an end cap; 3. a placement groove; 4. a mounting groove; 5. a mounting block; 6. a contact piece; 7. a fixing groove; 8. penetrating holes; 9. fixing the column; 10. a spring; 11. a plug; 12. a force application column; 13. a guide surface; 14. a guide rod; 15. a limit groove; 16. a sliding block; 17. a chute; 18. a magnetic suction block; 19. a plug-in groove; 20. a stress groove; 21. and (5) installing a logo.

Detailed Description

The utility model is described in further detail below with reference to fig. 1-3.

The embodiment of the utility model discloses a lithium battery shell. Referring to fig. 1 and 2, the lithium battery case includes a case 1 and an end cover 2, a placement groove 3 for placing a power supply core is provided on the case 1, and the end cover 2 covers the opening of the placement groove 3 to realize sealing of the case 1, which is the prior art and is not an innovation point of the present utility model, and is not repeated. An installation mark 21 is arranged on the end face of the end cover 2 far away from the installation groove 4, so that a user can know the condition of the anode and the cathode in the box body conveniently. Two mounting grooves 4 are formed in the end cover 2 along the length direction of the end cover 2, the depth direction of the mounting grooves 4 is perpendicular to the end face of the end cover 2, mounting blocks 5 are arranged in the mounting grooves 4, and the size of the cross section of each mounting block 5 perpendicular to the depth direction of the mounting groove 4 is consistent with the shape of the bottom surface of the mounting groove 4. The mounting block 5 is welded with contact pieces 6, and the two contact pieces 6 are respectively a cathode contact piece 6 and an anode contact piece 6.

Referring to fig. 2 and 3, a fixing groove 7 is formed in a side wall of the mounting block 5, a depth direction of the fixing groove 7 is perpendicular to a depth direction of the mounting groove 4, and a depth direction of the fixing groove 7 is perpendicular to an end surface of the mounting block 5 where the fixing groove 7 is formed. The spring 10 is welded on the bottom surface of the fixed groove 7, the spring 10 extends along the depth direction of the fixed groove 7, the fixed column 9 is welded on one end, far away from the bottom surface of the fixed groove 7, of the spring 10, the shape and the size of the end surface, connected with the spring 10, of the fixed column 9 are consistent with those of the bottom surface of the fixed groove 7, the guide surface 13 is obliquely arranged on one end, far away from the spring 10, of the fixed column 9, the guide surface 13 faces the end surface where the bottom surface of the installation groove 4 is located, and when the installation block 5 is inserted into the installation groove 4, the guide surface 13 is abutted against the side wall of the installation groove 4. The side wall of the mounting groove 4 is provided with a penetrating hole 8 for inserting the fixing column 9, the penetrating direction of the penetrating hole 8 is perpendicular to the depth direction of the mounting groove 4, the radial cross section of the penetrating hole 8 is consistent with the bottom surface of the fixing groove 7 in shape and size, and when the end surface of the mounting block 5 far away from the contact piece 6 is abutted to the bottom surface of the mounting groove 4, the fixing groove 7 is aligned with the penetrating hole 8. The spring 10 has a natural state and a compressed state, when the spring 10 is in the natural state, one end, far away from fixation, of the fixing column 9 extends out of the opening of the fixing groove 7, when the penetrating hole 8 is aligned with the fixing groove 7, one end, far away from fixation, of the fixing column 9 is inserted into the penetrating hole 8, and when the spring 10 is in the compressed state, the fixing column 9 is completely contracted in the fixing groove 7.

When the installation block 5 is required to be installed, a user controls the installation block 5 to be inserted into the installation groove 4, the guide surface 13 is abutted with the end surface where the opening of the installation groove 4 is positioned, the force is continuously applied to the installation block 5, the guide surface 13 is subjected to the extrusion force of the side wall of the installation groove 4 so that the fixing column 9 is completely contracted in the fixing groove 7, the installation block 5 can be normally inserted into the installation groove 4, when the penetrating hole 8 is aligned with the fixing groove 7, the extending part of the fixing column 9 is inserted into the penetrating hole 8, and the side wall of the penetrating hole 8 is clamped with the fixing column 9, so that the installation block 5 is fixed in the installation groove 4, and the installation block 5 is fixed on the end cover 2; when a certain contact piece 6 is damaged, a user extrudes the fixing column 9 through the penetrating hole 8 to take out the corresponding mounting block 5 from the mounting groove 4, so that the single replacement of the certain contact piece 6 is realized, and the situation that the whole end cover 2 needs to be replaced due to the damage of the certain contact piece 6 is reduced. The end face of the mounting block 5, which is provided with the contact piece 6, is vertically provided with a plugging groove 19, the side wall of the plugging groove 19 is provided with a stress groove 20, and the depth direction of the stress groove 20 is vertical to the depth direction of the plugging groove 19. When the user needs to take out the installation block 5, the user applies force to the installation block 5 through the inserting groove 19 and the force receiving groove 20, so that the user can conveniently replace the installation block 5.

In order to make the fixed column 9 more stable when inserting in the through hole 8, the sliding block 16 is welded on the side wall of the fixed column 9, the sliding block 16 is rectangular in shape, the sliding groove 17 for inserting and sliding the sliding block 16 along the depth direction of the fixed groove 7 is formed in the side wall of the fixed groove 7, the magnetic block 18 is welded on the side wall of the sliding groove 17, the shape and the size of the magnetic block 18 are consistent with those of the sliding block 16, the magnetic block 18 and the sliding block 16 are attracted with each other, at the moment, under the action of no external force, the attraction force between the magnetic block 18 and the sliding block 16 and the elasticity of the spring 10 enable the fixed column 9 to be difficult to move relative to the through hole 8, so that the stability of the mounting block 5 on the end cover 2 is improved, and meanwhile, the situation that the spring 10 is excessively elongated when the fixed column 9 completely falls out of the fixed groove 7 is reduced.

In order to reduce the situation that the transverse bending amplitude of the spring 10 is overlarge in the process of being extruded by the fixing column 9, the guide rod 14 is welded on the bottom surface of the fixing groove 7, the guide rod 14 is cylindrical, the guide rod 14 extends along the depth direction of the fixing groove 7, the spring 10 is sleeved on the outer side wall of the guide rod 14, the limiting groove 15 for the guide rod 14 to plug and slide along the depth direction of the fixing groove 7 is formed in the end surface of the fixing column 9, the radial cross section shape of the guide rod 14 is consistent with the bottom surface of the limiting groove 15 in size, and when the fixing column 9 is completely contracted in the fixing groove 7, one end, far away from fixing, of the guide rod 14 is abutted to the bottom surface of the limiting groove 15. When the spring 10 is compressed, the guide rod 14 can limit the spring 10, so that the spring 10 is not easy to have excessive transverse bending amplitude when being compressed, and the possibility of irretrievable spring 10 is reduced.

The plug 11 is inserted in the penetrating hole 8 in an interference manner, the size of the cross section shape of the plug 11 perpendicular to the penetrating direction of the penetrating hole 8 is consistent with the size of the radial cross section shape of the penetrating hole 8, the plug 11 is inserted in the inserting hole, the situation that other sundries enter the penetrating hole 8 to enable the fixing column 9 to move towards the direction close to the bottom surface of the fixing groove 7 and shrink in the fixing groove 7 is reduced, and meanwhile, the situation that the spring 10 is damaged due to the fact that liquid with fluidity such as rainwater enters the fixing groove 7 through the penetrating hole 8 and contacts with the spring 10 is reduced. The end, far away from the fixed column 9, of the plug 11 is vertically welded with a force application column 12, and a user conveniently takes out the plug 11 by pulling the force application column 12, so that the plug 11 is conveniently taken out by the user.

The implementation principle of the lithium battery shell provided by the embodiment of the utility model is as follows: when a certain contact piece 6 on the end cover 2 is damaged, a user takes out the plug 11 in the penetrating hole 8 through the force application column 12, and extrudes the fixing column 9 through the penetrating hole 8 so that the fixing column 9 is completely contracted in the fixing groove 7, and at the moment, the user takes out the mounting plate through the inserting groove 19 and the force receiving groove 20, so that the single replacement of the certain contact piece 6 is realized, and the occurrence of the situation that the whole end cover 2 is required to be replaced due to the damage of the certain contact piece 6 is reduced.

The above embodiments are not intended to limit the scope of the present utility model, so: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims

1. A lithium battery housing, characterized in that: including casing (1) and end cover (2), standing groove (3) that are used for supplying power core to place have been seted up on casing (1), end cover (2) cover standing groove (3) opening, two mounting grooves (4) have been seted up on end cover (2), all be provided with installation piece (5) in mounting groove (4), all fixedly connected with contact piece (6) on installation piece (5), fixed slot (7) have been seted up on the lateral wall of installation piece (5), set up on the lateral wall of installation groove (4) with fixed slot (7) aligned wear to establish hole (8), wear to establish hole (8) with peg graft simultaneously in fixed slot (7) has fixed column (9).

2. A lithium battery case according to claim 1, wherein: the utility model discloses a fixed slot (7) bottom surface fixedly connected with spring (10), fixed column (9) fixedly connected with keeps away from the one end of fixed slot (7) bottom surface on spring (10), spring (10) have natural state and compression state, works as when spring (10) are in natural state, the one end of keeping away from spring (10) on fixed column (9) is pegged graft in wearing to establish in hole (8), works as when spring (10) are in compression state, fixed column (9) shrink completely in fixed slot (7).

3. A lithium battery case according to claim 2, wherein: the plug (11) is inserted in the penetrating hole (8) in an interference mode, and the plug (11) covers the opening end face of the penetrating hole (8).

4. A lithium battery case (1) according to claim 3, characterized in that: and a force application column (12) is arranged at one end, far away from the fixed column (9), of the plug (11).

5. A lithium battery case according to claim 2, wherein: the fixing column (9) is obliquely provided with a guide surface (13) at one end far away from fixation, and the guide surface (13) faces the end face of the bottom surface of the mounting groove (4).

6. A lithium battery case according to claim 2, wherein: the bottom surface of the fixed groove (7) is provided with a guide rod (14), the spring (10) is sleeved on the outer side wall of the guide rod (14), and the end surface of the fixed column (9) connected with the spring (10) is provided with a limit groove (15) for the guide rod (14) to be inserted and slipped along the depth direction of the fixed groove (7).

7. A lithium battery case according to claim 2, wherein: the sliding block (16) is arranged on the side wall of the fixed column (9), a sliding groove (17) for the sliding block (16) to slide along the depth direction of the fixed groove (7) in an inserting mode is formed in the side wall of the fixed groove (7), and a magnetic attraction block (18) which is attracted with the sliding block (16) in a magnetic mode is arranged on the side wall of the sliding groove (17).

8. A lithium battery case according to claim 1, wherein: the end face of the mounting block (5) provided with the contact piece (6) is provided with a plugging groove (19), and the side wall of the plugging groove (19) is provided with a stress groove (20).

9. A lithium battery case according to claim 1, wherein: and the end cover (2) is provided with an installation mark (21).