CN218867297U

CN218867297U - Lithium battery shell structure

Info

Publication number: CN218867297U
Application number: CN202223296405.3U
Authority: CN
Inventors: 邹蔡畅; 丁希罕; 刘其达; 邵先辉
Original assignee: Hangzhou Skyrich Power Co ltd
Current assignee: Hangzhou Skyrich Power Co ltd
Priority date: 2022-12-08
Filing date: 2022-12-08
Publication date: 2023-04-14
Anticipated expiration: 2032-12-08

Abstract

The utility model relates to a lithium battery shell structure belongs to a lithium battery shell structure, to the unreasonable problem that leads to having the safety risk of current lithium battery structure, adopts technical scheme as follows: a lithium battery shell structure comprises a battery shell main body and a battery cover which are arranged up and down, wherein the battery shell main body is provided with a containing cavity for containing a battery core, the battery core is transversely stacked in the containing cavity, the battery cover is provided with a circuit board, the battery core is connected with the circuit board through a connecting wire, the battery cover comprises a bottom cover and a top cover covered on the bottom cover, and the circuit board is arranged on the bottom cover from top to bottom and is surrounded by the top cover; the bottom cover is provided with a wire hole and a connecting piece, and the connecting wire penetrates through the wire hole and is fixed on the connecting piece through a threaded connecting piece penetrating through the hollow part. The connecting wire can pass through the wiring hole, and electric core transversely stacks, guarantees safe in utilization, and the tip of connecting wire is fixed on the connecting piece to avoid the connecting wire to shift, casing compact structure is convenient for realize the lightweight.

Description

Lithium battery shell structure

Technical Field

The utility model belongs to the lithium cell field, in particular to lithium cell shell structure.

Background

In the current market, most of starting batteries used by motorcycles are mainly lead-acid storage batteries. The motorcycle is also provided with a plurality of daily-used electric facilities, such as sound boxes, atmosphere lamps and the like, so as to meet various requirements. The power utilization facilities take power from the storage battery, so that the power consumption of the storage battery can be accelerated. When a user uses related facilities in a state that the vehicle is not started, the storage battery is lack of power, the service life of the storage battery is damaged, and even the battery is damaged and loses functions, and finally the battery is replaced. In addition, the existing lead-acid storage battery has low energy density, large volume and heavy weight, is not beneficial to the light weight of the whole vehicle, and contains lead and other non-environment-friendly substances. Based on the above problems, replacement of lead-acid batteries by lithium batteries is a trend. However, the battery core adopted by the lithium battery is vertically stacked in the battery box (namely, the largest surface of the battery core faces the battery box cover), the battery core is connected to a pole or a terminal of the battery box cover through a wire, when the battery core swells, the top of the swelled battery core is easy to touch the battery box cover, the battery core is easy to be punctured by a sharp end, and potential safety hazards exist; in addition, the circuit board of current lithium cell is fixed on the lid from up down, and for making things convenient for electric core and circuit board to pass through the connecting wire and link to each other, certain length need be reserved to the connecting wire, and this just leads to electric core connecting wire long on the side, needs certain accommodation space, but the connecting wire is unable fixed, may shift in handling, also has certain safety risk. Therefore, the structure of the lithium battery needs to be improved, and potential safety hazards are reduced.

SUMMERY OF THE UTILITY MODEL

Unreasonable problem that leads to having the safety risk to current lithium battery structure, the utility model provides a lithium battery shell structure, battery simple to operate, compact structure and stability effectively reduce the safety risk.

The utility model adopts the technical scheme as follows: a lithium battery shell structure comprises a battery shell body 1 and a battery cover which are arranged up and down, wherein the battery shell body is provided with a containing cavity for containing a battery core, the battery core is transversely stacked in the containing cavity, the battery cover is provided with a circuit board, the battery core is connected with the circuit board through a connecting wire, the battery cover comprises a bottom cover and a top cover covered on the bottom cover, and the circuit board is installed on the bottom cover from top to bottom and is surrounded by the top cover; the bottom cover is provided with a wire hole and a connecting piece with a hollow part, and the connecting wire penetrates through the wire hole and is fixed on the connecting piece through a threaded connecting piece penetrating through the hollow part.

When the structure of this application is adopted, electric core and circuit board link to each other, the connecting wire can pass through the wiring hole, from down upwards successive layer assembly can, electric core transversely stacks, touch the circuit board after effectively avoiding electric core bulging, electric core is punctured risk greatly reduced, guarantee safe in utilization, the end fixing of connecting wire is on the connecting piece to avoid the connecting wire to shift, convenient operation, and needn't reserve the assembly space for the connecting wire, be favorable to whole shell structure compactness, be convenient for realize the lightweight.

Furthermore, the side wall of the bottom cover encloses a containing area with an opening below the connecting sheet, a sliding groove is arranged in the containing area, a limiting seat can enter the containing area from the opening along the sliding groove, a nut which can be matched with the threaded connecting piece for use is arranged on the limiting seat, and when the limiting seat is located in the containing area, the nut is limited by the limiting seat and the bottom cover. In this setting, spacing seat can effectively limit the nut, and when connecting through threaded connection spare, the nut can not shift, and the nut that not only is convenient for is spacing fast, makes things convenient for threaded connection spare quick assembly disassembly again.

Further, spacing seat is equipped with two perpendicular settings separate the fender muscle, works as spacing seat is located when holding the district, two separate the fender muscle and be located respectively the side and the opening side of nut, in order to avoid the nut is followed the opening part roll-off, a vertical protruding muscle sets up the opening part works as spacing seat is in hold in the district, vertical protruding muscle is spacing seat, in order to avoid spacing seat is followed under the vibration influence hold the district roll-off, and then influence the stability of connecting wire. The nut is limited in the accommodating area by the limiting seat which is arranged in a sliding mode through two blocking ribs.

Further, the side wall of the bottom cover comprises an outer edge and an inner edge which are arranged at intervals, the outer edge is higher than the inner edge, a water separating groove with a high outer part and a low inner part is defined by the outer edge, the inner edge and the bottom wall of the bottom cover, the top cover is provided with a top edge and a lower edge, the top edge is positioned at the top of the water separating groove, the lower edge is inserted into the water separating groove, and sealant is arranged in the water separating groove so that the top cover and the bottom cover can be sealed. The topside can separate the water that flows from top to bottom and keep off, is equipped with sealed glue in the water proof tank, can form better sealed effect, effectively avoids circuit board and water contact.

Furthermore, a first buckle is arranged on the inner side of the lower edge of the top cover, a first clamping groove is formed in the inner edge, and when the top cover covers the bottom cover, the first buckle is matched with the first clamping groove, so that the top cover and the bottom cover are limited.

Further, a second buckle is arranged on the inner side face of the top of the battery case body, a second clamping groove is formed in the inner edge and located below the first clamping groove, and when the bottom cover covers the battery case body, the second buckle is matched with the second clamping groove, so that the battery cover and the battery case body are limited. The first clamping groove and the second clamping groove are arranged up and down, so that the cooperation of the battery shell main body and the bottom cover can be observed conveniently, and the cooperation looseness can be found.

Further, the bottom that separates the basin is equipped with the arch, the lower edge is taken the bellied upper surface the lower edge with separate and form the cavity between the basin to can't take off the top cap under the atmospheric pressure effect after top cap and bottom lid close, make things convenient for sealed glue to flow.

Furthermore, a support column is arranged on the bottom cover, the circuit board is connected to the support column, and the circuit board is separated from the bottom cover through the support column, so that heat dissipation of a heating element on the circuit board is facilitated.

Furthermore, two outer polar columns are arranged on the bottom cover and are respectively used as a positive polar column and a negative polar column, the connecting pieces are two, and the two outer polar columns and the two connecting pieces are integrally embedded and formed on the bottom cover.

Furtherly, be equipped with spacing bubble cotton in the battery case main part, be located the electric core side, spacing on the one hand and press from both sides tight electric core, on the other hand plays the cushioning effect to avoid electric core and battery case main part direct collision.

The utility model discloses beneficial effect who has: the utility model provides a lithium battery shell structure, electricity core links to each other with the circuit board, the connecting wire passes through the walk-line hole, from down upwards successive layer assembly can, electricity core transversely stacks, effectively avoid touch the circuit board after electric core bulging, electric core is punctured risk greatly reduced, guarantee safe in utilization, the end fixing of connecting wire is on the connecting piece, in order to avoid the connecting wire to shift, and convenient operation, and needn't reserve the assembly space for the connecting wire, be favorable to whole shell structure compactness, be convenient for realize the lightweight. In addition, a limiting seat is adopted for limiting the nut, so that the nut cannot move when the threaded connecting piece is connected, the nut is convenient to quickly limit, and the threaded connecting piece is convenient to quickly disassemble and assemble.

Drawings

FIG. 1 is a schematic view of the overall structure of a lithium battery case structure;

FIG. 2 is an assembly view of a lithium battery cell casing structure;

FIG. 3 is a schematic view of a top cover assembly;

FIG. 4 is a schematic view showing an assembly structure of a battery cover;

FIG. 5 is a schematic structural view of the top cover;

FIG. 6 is a schematic structural view of an integrally formed external pole and connecting sheet;

FIG. 7 is a schematic structural view of a stopper seat;

in the figure: 1-a battery case body; 11-electric core; 12-a second buckle; 13-limiting foam; 2-a battery cover; 21-bottom cover; 211-outer edge; 212-inner edge; 213-water separating tank; 214-a first card slot; 215-a second card slot; 216-bumps; 217-support column; 218-outer pole; 219-vertical ribs; 22-a top cover; 221-top edge; 222-lower edge; 223-a first buckle; 23-a circuit board; 24-a wiring hole; 25-connecting pieces; 26-a containment zone; 27-a chute; 28-a limiting seat; 281-blocking ribs; 29-a threaded connection; 3-connecting wires; 4-a nut.

Detailed Description

The technical solutions of the embodiments of the present invention are explained and illustrated below with reference to the drawings of the present invention, but the following embodiments are only preferred embodiments of the present invention, and not all embodiments are included. Based on the embodiments in the embodiment, other embodiments obtained by those skilled in the art without any creative work belong to the protection scope of the present invention.

The lithium battery shell structure of the embodiment, as shown in fig. 1 to fig. 7, includes a battery shell body 1 and a battery cover 2 which are arranged up and down, where the battery shell body 1 has a containing cavity for containing a battery cell 11, the battery cell 11 is transversely stacked in the containing cavity, the battery cover 2 is provided with a circuit board 23, the battery cell 11 is connected to the circuit board 23 through a connecting wire 3, the battery cover 2 includes a bottom cover 21 and a top cover 22 covering the bottom cover 21, and the circuit board 23 is installed on the bottom cover 21 from top to bottom and is surrounded by the top cover 22; the bottom cover 21 is provided with a wiring hole 24 and a connecting piece 25 with a hollow part, and the connecting wire 3 passes through the wiring hole 24 and is fixed on the connecting piece 25 through a threaded connecting piece 29 penetrating through the hollow part.

When the structure of this application is adopted, electric core 11 links to each other with circuit board 23, connecting wire 3 can pass through wiring hole 24, from upwards from down successive layer assembly can, in this embodiment, electric core 11 transversely stacks can be utmost point ear up, also can be utmost point ear towards one side, thus, the great side of area will be towards the lateral wall of battery case main part 1, rather than the circuit board, consequently, electric core 11 transversely stacks, even electric core takes place to swell, also can not contact with the circuit board, greatly reduced electric core 11 is punctured the risk, guarantee safe in utilization, the end fixing of connecting wire 3 is on connection piece 25, in order to avoid the aversion of connecting wire 3, and convenient operation, and needn't reserve the assembly space for connecting wire 3, still be favorable to whole shell structure compactness, be convenient for realize the lightweight.

The side wall of the bottom cover 21 is enclosed to form an accommodating area 26 with an opening below the connecting sheet 25, a sliding groove 27 is arranged in the accommodating area 26, a limiting seat 28 can enter the accommodating area 26 from the opening along the sliding groove 27, a nut 4 which can be used in cooperation with the threaded connecting piece 29 is arranged on the limiting seat 28, and when the limiting seat 28 is located in the accommodating area 26, the nut 4 is limited by the limiting seat 28 and the bottom cover 21. In this arrangement, the limiting seat 28 can effectively limit the nut 4, and when the nut 4 is connected through the threaded connecting piece 29, the nut 4 cannot be displaced, so that the nut 4 is convenient to limit quickly, and the threaded connecting piece 29 is convenient to disassemble and assemble quickly. In this embodiment, the wire hole 24 is adjacent to the accommodating cavity 26, and when the limiting seat 28 is installed, the limiting seat 28 can be placed at the wire hole 24 and then pushed into the accommodating cavity 26, so that structural interference can be avoided during assembly.

As shown in fig. 7, spacing seat 28 is equipped with two perpendicular settings separate fender muscle 281, works as spacing seat 28 is located when holding the district 26, two separate fender muscle 281 and be located respectively the side and the opening side of nut 4, so that nut 4 is followed the opening part roll-off, vertical protruding muscle 219 sets up the opening part, works as spacing seat 28 is in hold the district 26, vertical protruding muscle 219 is spacing seat 28, so that spacing seat 28 is followed under the vibration influence hold the district 26 roll-off, and then influence the stability of connecting wire 3. The slidably arranged limiting seat 28 limits the nut 4 in the receiving region 26 by means of two blocking ribs 281. The limiting seat 28 cannot slide out randomly under the limiting effect of the sliding groove 27 and the vertical convex rib 219, and cannot move randomly when the threaded connecting piece is assembled, so that the assembling difficulty is effectively reduced.

As shown in fig. 2 to 4, the side wall of the bottom cover 21 includes an outer edge 211 and an inner edge 212, which are spaced apart from each other, the outer edge 211 is higher than the inner edge 212, the outer edge 211, the inner edge 212 and the bottom wall of the bottom cover 21 define a water separation tank 213 with a high outer portion and a low inner portion, the top cover 22 has a top edge 221 and a bottom edge 222, the top edge 221 is located at the top of the water separation tank 213, the bottom edge 222 is inserted into the water separation tank 213, and a sealant is disposed in the water separation tank 213, so that a seal is formed between the top cover 22 and the bottom cover 21. Topside 221 can separate the water that flows from top to bottom and be equipped with sealed glue in water proof groove 213, can form better sealed effect, effectively avoids circuit board 23 and water contact.

As shown in fig. 2 to 4, a first buckle 223 is disposed on the inner side of the lower edge 222 of the top cover 22, and a first locking groove 214 is disposed on the inner edge 212, when the top cover 22 covers the bottom cover 21, the first buckle 223 is engaged with the first locking groove 214, so that the top cover 22 and the bottom cover 21 are limited. The first latch 223 has an inclined surface to facilitate the latching of the first latch 223.

The inner side surface of the top of the battery case body is provided with a second buckle 12, the inner edge 212 is provided with a second clamping groove 215, the second clamping groove 215 is positioned below the first clamping groove 214, and when the bottom cover 21 covers the battery case body, the second buckle 12 is matched with the second clamping groove 215, so that the battery cover 2 and the battery case body are limited. During assembly, the battery case body 1 and the bottom cover 21 are assembled firstly, and due to the fact that the first clamping groove 214 and the second clamping groove 215 are arranged up and down, an operator can conveniently observe the matching condition of the second buckle 12 and the second clamping groove 215, and can timely find whether the matching is loose or not.

The bottom of the water-isolating groove 213 is provided with a protrusion 216, the lower edge 222 is lapped on the upper surface of the protrusion 216, and a cavity is formed between the lower edge 222 and the water-isolating groove 213, so that the top cover 22 cannot be taken down under the action of air pressure after the top cover 22 and the bottom cover 21 are covered, and the sealant can flow conveniently.

The bottom cover 21 is provided with a support column 217, the circuit board 23 is connected to the support column 217, and the support column 217 separates the circuit board 23 from the bottom cover 21, so that a heat dissipation space is formed between the circuit board 23 and the bottom surface of the bottom cover 21, thereby avoiding heat accumulation and facilitating heat dissipation of the heating element.

The bottom cover 21 is provided with two outer poles 218 serving as a positive pole and a negative pole respectively, the connecting pieces 25 are two, and the two outer poles 218 and the two connecting pieces 25 are integrally embedded and formed on the bottom cover 21. The integrated forming structure is shown in fig. 6, the number of the connecting pieces can be effectively reduced by the arrangement, and the forming is also convenient.

Be equipped with spacing bubble cotton 13 in battery case main part 1, be located 11 sides of electric core, when electric core 11 assembles, this spacing bubble cotton 13 can be spacing and press from both sides tight electric core, because it is soft materials, can also play the cushioning effect, can avoid

electric core

11 and 1 direct collision of battery case main part, cause the damage to electric core 11.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and those skilled in the art should understand that the present invention includes but is not limited to the contents described in the drawings and the above detailed description. Any modification which does not depart from the functional and structural principles of the present invention is intended to be included within the scope of the claims.

Claims

1. A lithium battery shell structure comprises a battery shell main body and a battery cover which are arranged up and down, wherein the battery shell main body is provided with a containing cavity for containing a battery cell, the battery cover is provided with a circuit board, the battery cell and the circuit board are connected through a connecting wire, the lithium battery shell structure is characterized in that the battery cell is transversely stacked in the containing cavity, the battery cover comprises a bottom cover and a top cover covered on the bottom cover, and the circuit board is installed on the bottom cover from top to bottom and is surrounded by the top cover; the bottom cover is provided with a wire hole and a connecting piece with a hollow part, and the connecting wire penetrates through the wire hole and is fixed on the connecting piece through a threaded connecting piece penetrating through the hollow part.

2. The lithium battery casing structure of claim 1, wherein the side wall of the bottom cover encloses a receiving area having an opening below the connecting piece, the receiving area is provided with a sliding groove, a limiting seat can enter the receiving area from the opening along the sliding groove, the limiting seat is provided with a nut capable of cooperating with the threaded connecting member, and when the limiting seat is located in the receiving area, the nut is limited by the limiting seat and the bottom cover.

3. The lithium battery shell structure as claimed in claim 2, wherein the limiting seat is provided with two vertically arranged blocking ribs, when the limiting seat is located in the accommodating area, the two blocking ribs are respectively located on the side surface and the opening side of the nut so as to prevent the nut from sliding out of the opening, a vertical convex rib is arranged at the opening, and when the limiting seat is located in the accommodating area, the vertical convex rib is used for limiting the limiting seat.

4. The lithium battery casing structure of claim 2, wherein the side wall of the bottom cover comprises an outer edge and an inner edge spaced apart from each other, the outer edge is higher than the inner edge, the outer edge, the inner edge and the bottom wall of the bottom cover define a water-separating channel with an outer height and an inner height, the top cover has a top edge and a bottom edge, the top edge is located at the top of the water-separating channel, the bottom edge is inserted into the water-separating channel, and a sealant is disposed in the water-separating channel so as to form a seal between the top cover and the bottom cover.

5. The lithium battery shell structure as claimed in claim 4, wherein a first buckle is disposed on the inner side of the lower edge of the top cover, and a first locking groove is disposed on the inner edge, and when the top cover is covered on the bottom cover, the first buckle and the first locking groove are engaged to limit the top cover and the bottom cover.

6. The lithium battery case structure of claim 5, wherein a second buckle is disposed on an inner side surface of the top of the battery case body, a second locking groove is disposed on the inner edge, the second locking groove is located below the first locking groove, and when the bottom cover is covered on the battery case body, the second buckle cooperates with the second locking groove, so that the battery cover and the battery case body are limited.

7. The lithium battery casing structure of claim 4, wherein a protrusion is formed at the bottom of the water-blocking groove, the lower edge is overlapped on the upper surface of the protrusion, and a cavity is formed between the lower edge and the water-blocking groove.

8. The lithium battery cell casing structure of claim 1, wherein the bottom cover is provided with support columns to which the circuit board is connected, and the circuit board is spaced from the bottom cover by the support columns.

9. The lithium battery shell structure as claimed in claim 1, wherein the bottom cover is provided with two external poles respectively serving as a positive pole and a negative pole, and the connecting pieces are two, and the two external poles are respectively embedded and formed on the bottom cover integrally with the two connecting pieces.

10. The lithium battery shell structure of claim 1, wherein a limiting foam is arranged in the battery shell main body and is positioned on the side surface of the battery core.