CN214589075U

CN214589075U - Lithium battery pack for electric vehicle

Info

Publication number: CN214589075U
Application number: CN202120505797.6U
Authority: CN
Inventors: 姜丽华; 李天�; 宇小强
Original assignee: China Lithium Energy Technology Hangzhou Co ltd
Current assignee: China Lithium Energy Technology Hangzhou Co ltd
Priority date: 2021-03-10
Filing date: 2021-03-10
Publication date: 2021-11-02
Anticipated expiration: 2031-03-10

Abstract

The utility model discloses a lithium cell group for electric motor car, comprising a main body, the main part surface is provided with plastic casing, the inside bottom of plastic casing is provided with buffer spring, the buffer spring upper end is provided with the fixed plate, the fixed plate upper surface is provided with the bubble cotton, be provided with the PP membrane on the bubble cotton, plastic casing one side lower extreme is provided with the vent, be provided with the filtering layer in the vent, the inside group battery of installing with PP membrane contact of plastic casing, the group battery includes electric core, be provided with the nickel piece on the electric core, there is the connection piece on the nickel piece, the top cap is installed on the plastic casing top, the top cap upper surface is provided with first recess, the inside left side of first recess is provided with the fixed block, be provided with logical groove in the fixed block, it is provided with the rotary column to lead to inslot portion, the rotary column both ends are connected with the handle. The utility model discloses a lithium cell group for electric motor car promotes heat dispersion, increases the life of lithium cell, effectively reduces impact, the vibrations problem among the practical application, reduces that the group battery receives violent impact and impaired.

Description

Lithium battery pack for electric vehicle

Technical Field

The utility model relates to a lithium cell technical field specifically is lithium cell group for electric motor car.

Background

Lithium batteries are a type of battery using a nonaqueous electrolyte solution with lithium metal or a lithium alloy as a negative electrode material. Because the lithium battery can be repeatedly charged and discharged, the safety, specific capacity, self-discharge rate and cost performance ratio of the lithium battery are all superior to those of the common battery. The lithium battery pack is formed by connecting a plurality of lithium batteries in parallel or in series and then arranging the lithium batteries in a plastic shell; the lithium battery pack has lighter weight and longer service life than a lead-acid storage battery, and is gradually applied to electric vehicles.

The prior art has the following defects or problems:

1. because the battery pack shell is made of plastic materials, the heat dissipation performance is reduced, and the service life is shortened because the heat of the lithium battery cannot be dissipated in time;

2. the problems of impact and vibration in the practical application of the light vehicle are not considered and countermeasures are not taken, so that the battery pack is easily damaged by severe impact.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a weak point to prior art provides lithium cell group for electric motor car to solve the problem that provides in the background art.

In order to achieve the above object, the utility model provides a following technical scheme: lithium cell group for electric motor car, comprising a main body, the main part surface is provided with plastic casing, the inside bottom of plastic casing is provided with buffer spring, the buffer spring upper end is provided with the fixed plate, the fixed plate upper surface is provided with the bubble cotton, be provided with the PP membrane on the bubble cotton, plastic casing one side lower extreme is provided with the vent, be provided with the filtering layer in the vent, the inside battery pack of installing with the contact of PP membrane of plastic casing, the battery pack includes electric core, be provided with the nickel piece on the electric core, there is the connection piece on the nickel piece, the top cap is installed on the plastic casing top, the top cap upper surface is provided with first recess, the inside left side of first recess is provided with the fixed block, be provided with logical groove in the fixed block, it is provided with the rotary column to lead to inslot portion.

As the utility model discloses a preferred technical scheme: the utility model discloses a plastic housing, including rotary column, plastic housing, top cover, electrode, protective frame, supporting plate, first recess, the rotary column both ends are connected with the handle, the first recess is kept away from to plastic housing upper surface is provided with the second recess, be provided with the backup pad in the second recess, the backup pad middle part is provided with the electrode, be provided with the protective frame on the second recess, the second recess is kept away from to the top cover upper surface is provided with the electric quantity display screen.

As the utility model discloses a preferred technical scheme: the plastic shell is fixedly connected with the buffer spring through a fixing sheet, the buffer spring is fixedly installed with the fixing plate through the fixing sheet, and the number of the buffer springs is a plurality.

As the utility model discloses a preferred technical scheme: the plastic housing is characterized in that a vent is formed in the lower end of one side of the plastic housing, the vent and the filter layer are fixedly installed through a clamping groove, and the number of the vent and the number of the filter layer are two.

As the utility model discloses a preferred technical scheme: the battery cell is coupled with the nickel sheets, the nickel sheets are welded with the connecting sheets, the number of the battery cells is twenty four, the number of the nickel sheets is twelve, and the number of the connecting sheets is twenty four.

As the utility model discloses a preferred technical scheme: first recess has been seted up to the top cap upper surface, logical groove has been seted up in the fixed block, bubble cotton, PP membrane quantity are two.

As the utility model discloses a preferred technical scheme: the rotary column is fixedly installed with the handle through the clamping groove, the supporting plate is fixedly installed with the electrodes through the clamping groove, the number of the electrodes is three, the electrodes comprise anodes, cathodes and ground wires, and the electrodes, the second grooves, the supporting plate and the protective frame are combined to form a power interface.

Compared with the prior art, the utility model provides a following beneficial effect:

1. according to the lithium battery pack for the electric vehicle, the ventilation opening and the filter layer are formed in the surface of the plastic shell, so that the main body can safely dissipate heat, the heat dissipation performance is improved, and the service life of the lithium battery is prolonged;

2. this lithium cell group for electric motor car vibrates through the impact that sets up the effectual reduction group battery that receives at the inside buffer spring of plastic casing and fixed plate, and it is impaired effectively to reduce the group battery impact.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is an enlarged view of FIG. 1A according to the present invention;

fig. 3 is a top view of the top cover of the present invention;

fig. 4 is a schematic view of the battery pack connection structure of the present invention.

In the figure: 1. a main body; 2. a plastic housing; 3. a buffer spring; 4. a fixing plate; 5. soaking cotton; 6. a PP film; 7. a vent; 8. a filtering layer; 9. a battery pack; 901. an electric core; 10. a top cover; 11. a first groove; 12. a fixed block; 13. a through groove; 14. turning the column; 15. a handle; 16. a second groove; 17. a support plate; 18. an electrode; 19. a protective frame; 20. an electric quantity display screen; 21. a nickel sheet; 22. and (7) connecting the sheets.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, in this embodiment: lithium cell group for electric motor car, including

main part

1, 1 surface of main part is provided with plastic casing 2, the inside bottom of plastic casing 2 is provided with buffer spring 3, buffer spring 3 upper end is provided with

fixed plate

4, 4 upper surfaces of fixed plate are provided with the cotton 5 of bubble, be provided with PP membrane 6 on the cotton 5 of bubble, 2 one side lower extremes of plastic casing are provided with vent 7, be provided with filtering layer 8 in the

vent

7, 2 inside and the contact of PP membrane 6 of plastic casing are installed and are organized group battery 9, group battery 9 includes electric core 901, be provided with nickel piece 21 on the electric core 901, there is connection piece 22 on the nickel piece 21, top cap 10 is installed on 2 tops of plastic casing, top cap 10 upper surface is provided with first recess 11, the inside left side of first recess 11 is provided with fixed block 12, be provided with logical groove 13 in the fixed block 12, logical groove 13 is inside to be provided with rotary column 14.

In the embodiment, two ends of the rotary column 14 are connected with handles 15, a second groove 16 is arranged on the upper surface of the plastic shell 2 far away from the first groove 11, a support plate 17 is arranged in the second groove 16, an electrode 18 is arranged in the middle of the support plate 17, a protective frame 19 is arranged on the second groove 16, and an electric quantity display screen 20 is arranged on the upper surface of the top cover 10 far away from the second groove 16; the plastic shell 2 is fixedly connected with the buffer springs 3 through fixing pieces, the buffer springs 3 are fixedly installed with the fixing plate 4 through the fixing pieces, the number of the buffer springs 3 is a plurality, and impact shock on the battery pack 9 is effectively reduced through the buffer springs 3; the lower end of one side of the plastic shell 2 is provided with a vent 7, the vent 7 and the filter layer 8 are fixedly installed through a clamping groove, the number of the vent 7 and the number of the filter layer 8 are two, the main body 1 can safely dissipate heat through the vent 7, the heat dissipation performance is improved, and the service life of the lithium battery is prolonged; the battery cells 901 and the nickel sheets 21 are coupled, the nickel sheets 21 and the connecting sheets 22 are welded, the number of the battery cells 901 is twenty-four, the number of the nickel sheets 21 is twelve, the number of the connecting sheets 22 is twenty-four, and the battery cells 901 can be connected in parallel through the nickel sheets 21; the upper surface of the top cover 10 is provided with a first groove 11, the fixing block 12 is internally provided with a through groove 13, the number of the foam 5 and the number of the PP films 6 are two, the battery pack 9 can be protected through the top cover 10, the battery pack 9 can be further protected through the foam 5, the PP films 6 can play an insulating role, and stable energy is provided through the battery pack 9; the rotary column 14 and the handle 15 are fixedly installed through a clamping groove, the supporting plate 17 and the electrodes 18 are fixedly installed through a clamping groove, the number of the electrodes 18 is three, the electrodes 18 comprise anodes, cathodes and ground wires, the electrodes 18, the second grooves 16, the supporting plate 17 and the protective frame 19 are combined to form a power interface, and the positions of the electrodes can be fixed through the supporting plate 17.

The utility model discloses a theory of operation and use flow: when the electric vehicle is used, a user places the main body 1 into a battery compartment of the electric vehicle by opening the handle 15, inserts a power cord of the electric vehicle into the second groove 16 and contacts the electrode 18, the connection between the main body 1 and the electric vehicle is completed, and the battery pack 9 in the main body 1 is impacted due to road bumps when the electric vehicle runs. Through fixed plate 4 and buffer spring 3 of the cotton 5 of bubble and 2 bottoms of plastic casing, the shock that effectual reduction group battery 9 received is vibrate, and it is impaired effectively to reduce group battery 9 to strike, when group battery 9 used for a long time to begin to generate heat, and outside air accessible vent 7 gets into 1 insides of main part and dispels the heat to group battery 9, guarantees that the temperature of group battery 9 can not be too high, promotes heat dispersion, increases the life of lithium cell.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. Lithium cell group for electric motor car, its characterized in that: comprises a main body (1), a plastic shell (2) is arranged on the outer surface of the main body (1), a buffer spring (3) is arranged at the bottom end inside the plastic shell (2), a fixing plate (4) is arranged at the upper end of the buffer spring (3), foam (5) is arranged on the upper surface of the fixing plate (4), a PP film (6) is arranged on the foam (5), a vent (7) is arranged at the lower end of one side of the plastic shell (2), a filter layer (8) is arranged in the vent (7), a battery pack (9) is arranged inside the plastic shell (2) and in contact with the PP film (6), the battery pack (9) comprises a battery cell (901), a nickel sheet (21) is arranged on the battery cell (901), a connecting sheet (22) is arranged on the nickel sheet (21), a top cover (10) is arranged at the top end of the plastic shell (2), a first groove (11) is arranged on the upper surface of the top cover (10), a fixing block (12) is arranged on the left side inside the first groove (11), a through groove (13) is formed in the fixing block (12), and a rotary column (14) is arranged inside the through groove (13).

2. The lithium battery pack for an electric vehicle according to claim 1, wherein: the utility model discloses a rotary column, including rotary column (14), plastic casing (2), first recess (11) are kept away from to plastic casing (2) upper surface and are provided with second recess (16), be provided with backup pad (17) in second recess (16), backup pad (17) middle part is provided with electrode (18), be provided with protective frame (19) on second recess (16), top cap (10) upper surface is kept away from second recess (16) and is provided with electric quantity display screen (20).

3. The lithium battery pack for an electric vehicle according to claim 1, wherein: the plastic shell (2) is fixedly connected with the buffer springs (3) through fixing pieces, the buffer springs (3) are fixedly installed with the fixing plate (4) through the fixing pieces, and the number of the buffer springs (3) is a plurality.

4. The lithium battery pack for an electric vehicle according to claim 1, wherein: the plastic shell is characterized in that a vent (7) is formed in the lower end of one side of the plastic shell (2), the vent (7) and the filter layer (8) are fixedly installed through a clamping groove, and the number of the vent (7) and the number of the filter layer (8) are two.

5. The lithium battery pack for an electric vehicle according to claim 1, wherein: the battery cell (901) is coupled with the nickel sheets (21), the nickel sheets (21) are welded with the connecting sheets (22), the number of the battery cells (901) is twenty four, the number of the nickel sheets (21) is twelve, and the number of the connecting sheets (22) is twenty four.

6. The lithium battery pack for an electric vehicle according to claim 1, wherein: first recess (11) have been seted up to top cap (10) upper surface, logical groove (13) have been seted up in fixed block (12), bubble cotton (5), PP membrane (6) quantity are two.

7. The lithium battery pack for an electric vehicle according to claim 2, wherein: the rotary column (14) and the handle (15) are fixedly installed through clamping grooves, the supporting plate (17) and the electrodes (18) are fixedly installed through clamping grooves, the number of the electrodes (18) is three, the electrodes (18) comprise anodes, cathodes and ground wires, and the electrodes (18), the second grooves (16), the supporting plate (17) and the protective frame (19) are combined to form a power interface.