CN217387404U

CN217387404U - Lithium ion battery pack for low-speed electric vehicle

Info

Publication number: CN217387404U
Application number: CN202123450383.7U
Authority: CN
Inventors: 庄文生; 温尚龙; 陈欣义
Original assignee: Guangzhou Guangzhu Battery Co ltd
Current assignee: Guangzhou Guangzhu Battery Co ltd
Priority date: 2021-12-30
Filing date: 2021-12-30
Publication date: 2022-09-06
Anticipated expiration: 2031-12-30

Abstract

The utility model discloses a lithium ion battery pack for a low-speed electric vehicle, which comprises a shell and a battery module, wherein the shell comprises a shell body and a shell cover, the shell cover is arranged on the shell body, the shell body is connected with the shell cover through a bolt, and the shell body is a cuboid; the battery module comprises a first module and four second modules, the four second modules and the first module are sequentially arranged in the shell from bottom to top, the second module comprises sixty-four second lithium battery monomers, the sixty-four second lithium battery monomers are arranged in an eight-row eight-column staggered manner, the first module comprises sixteen first lithium battery monomers, the sixteen first lithium battery monomers are arranged in a two-row eight-column staggered manner, and the first module and the four second modules are electrically connected; through the crisscross module that forms of lithium cell monomer, connect between each module and form the battery module, saved the space greatly, make the volume reduction of battery module.

Description

Lithium ion battery pack for low-speed electric vehicle

Technical Field

The utility model relates to an electric motor car battery field, in particular to lithium ion battery group for low-speed electric motor car.

Background

The low-speed electric vehicle can be widely defined to cover an electric bicycle, an electric motorcycle, an electric tricycle, a low-speed electric vehicle and the like. The power source of the battery is generally a battery, the traditional lead-acid battery is one of the batteries which are widely applied, the lead-acid battery has the defects of low energy density, short service life, high cost and the like, the lithium battery is a better substitute of the lead-acid battery, and the conventional battery pack has the problem of overlarge volume on a low-speed electric vehicle.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a lithium ion battery group for low-speed electric motor car, the volume is less.

According to the utility model discloses a lithium ion battery group for low-speed electric motor car of first aspect embodiment, include: the shell comprises a shell body and a shell cover, wherein the shell cover is arranged on the shell body, the shell body is connected with the shell cover through a bolt, and the shell body is a cuboid; the battery module, the battery module is including first module and four second modules, from supreme four of having set gradually down in the casing the second module with first module, the second module is including sixty four second lithium cell monomers, sixty four second lithium cell monomer arrangement mode is eight rows and eight rows staggered distribution, first module is including sixteen first lithium cell monomer, and sixteen is first lithium cell monomer arrangement mode is two rows and eight rows staggered distribution, first module and four the electricity is connected between the second module.

According to the utility model discloses lithium ion battery group for low-speed electric motor car has following beneficial effect at least: through the crisscross module that forms of lithium cell monomer, connect between each module and form the battery module, saved the space greatly, make the volume reduction of battery module.

According to the utility model discloses a some embodiments, first lithium battery cell level is placed, the vertical placement of second lithium battery cell.

According to some embodiments of the invention, the first module and four are connected through banded copper conductor or banded nickel conductor between the positive negative pole of second module.

According to some embodiments of the invention, a first FR4 epoxy board is provided between the first module and four of the second modules.

According to some embodiments of the utility model, the battery module still is provided with the PCB protection shield, the PCB protection shield sets up in the superiors on the first FR4 epoxy board of second module, the negative pole of first module with the PCB protection shield electricity is connected.

According to some embodiments of the utility model, the skin of battery module is provided with the fibre sticky tape, the width of fibre sticky tape is 50mm, the skin of fibre sticky tape is provided with second FR4 epoxy board.

According to some embodiments of the utility model, be equipped with article prefix socket and the double-phase socket for the electric motor car on the cap, article prefix socket with the double-phase socket for the electric motor car respectively with the battery module electricity is connected, article prefix socket with the double-phase socket parallel arrangement for the electric motor car.

According to some embodiments of the utility model, still be equipped with handle and handle base on the shell lid, the handle base set up in the center of cap, the handle base with the handle is rotationally connected, be provided with the GPS module in the handle base.

According to the utility model discloses a some embodiments, casing and lower floor be provided with the cotton material of EVA bubble between the second module, the cotton material of EVA bubble is used for the buffering the pressure of battery module to the casing bottom, the casing with be provided with the epoxy foam between the battery module, the epoxy foam is used for fixing, buffering, insulating and protection the battery module.

According to the utility model discloses a few embodiments, be equipped with the louvre on the side of casing, louvre distribution mode is the rectangle distribution.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural diagram of a lithium ion battery pack for a low-speed electric vehicle according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a battery module according to an embodiment of the present invention.

Reference numerals are as follows:

casing 110, shell cover 120, louvre 111, EVA bubble cotton material 112, article prefix socket 121, double-phase socket 122 is used to the electric motor car, handle 123, handle base 124, battery module 200, first module 210, first lithium cell 211, second module 220, second lithium cell 221, first FR4 epoxy 230, second FR4 epoxy 240, PCB protection shield 250.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to the orientation description, such as the directions of up, down, front, back, left, right, etc., may be the orientation or positional relationship shown on the drawings, only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the present number, and the terms greater than, less than, within, etc. are understood as including the present number. If there is a description of first and second for the purpose of distinguishing technical features only, this is not to be understood as indicating or implying a relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the terms such as setting, installing, connecting, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meaning of the terms in the present invention by combining the specific contents of the technical solution.

Referring to fig. 1 and 2, the present invention provides a lithium ion battery pack for a low-speed electric vehicle, including a housing and a battery module 200, wherein the housing includes a casing 110 and a housing cover 120, the housing cover 120 is disposed on the casing 110, the casing 110 is connected to the housing cover 120 by bolts, and the casing 110 is a rectangular parallelepiped; the battery module 200 includes a first module 210 and four second modules 220, four second modules 220 and a first module 210 are sequentially arranged in the casing 110 from bottom to top, the second module 220 includes sixty-four second lithium battery cells 221, the arrangement of the sixty-four second lithium battery cells 221 is eight rows and eight columns of staggered distribution, the first module 210 includes sixteen first lithium battery cells 211, the arrangement of the sixteen first lithium battery cells 211 is two rows and eight columns of staggered distribution, and the first module 210 and the four second modules 220 are electrically connected.

The 18650 type ternary lithium battery is all adopted by first lithium battery monomer 211 and second lithium battery monomer 221 of this embodiment, because 18650 type ternary lithium battery's shape is cylindrical, so when adopting the adjacent distribution of vertically and horizontally of traditional rectangle, have great space between the adjacent lithium battery, also have great space in the middle of the rectangle that four lithium battery monomers formed, and when adopting crisscross distribution, also be the lithium battery monomer of next line, when being located the position in the middle of the last line lithium battery, can save out the space, thereby the volume and the weight of group battery have been reduced.

The utility model discloses an in some embodiments, first lithium battery cell 211 level is placed, and second lithium battery cell 221 is vertical to be placed.

By placing a smaller number of first modules 210 of lithium battery cells horizontally, the height of the battery pack is reduced compared to a vertical placement, thereby further reducing the volume of the battery pack.

In some embodiments of the present invention, the positive and negative electrodes of the first module 210 and the four second modules 220 are connected by a strip copper conductor or a strip nickel conductor.

The use of the strip-shaped conductors can reduce the distance between two adjacent modules, thereby reducing the volume of the battery pack.

In some embodiments of the present invention, a first FR4 epoxy board 230 is disposed between the first module 210 and the four second modules 220.

By arranging the FR4 flame-retardant grade epoxy board material between the modules, the risk of burning other modules when the lithium battery monomer is accidentally ignited can be reduced.

In some embodiments of the present invention, the battery module 200 further comprises a PCB protection plate 250, the PCB protection plate 250 is disposed on the first FR4 epoxy plate 230 of the uppermost second module 220, and the cathode of the first module 210 is electrically connected to the PCB protection plate 250.

The PCB protection plate 250 is connected to the negative electrode of the battery module 200, that is, the PCB protection plate 250 is connected in series to the battery module 200, so that the PCB can be used to protect the battery and to extend the service life of the battery pack.

In some embodiments of the present invention, the outer layer of the battery module 200 is provided with a fiber adhesive tape, the width of the fiber adhesive tape is 50mm, and the outer layer of the fiber adhesive tape is provided with a second FR4 epoxy board 240.

The use of the fiber tape together with the FR4 epoxy board prevents the risk of fire spreading and igniting the exterior of the battery, such as the body of a low-speed electric vehicle, in the event of accidental self-ignition of the battery.

The utility model discloses an in some embodiments, be equipped with article prefix socket 121 and the double-phase socket 122 for the electric motor car on the cap 120, article prefix socket and the double-phase socket for the electric motor car are connected with battery module 200 electricity respectively, article prefix socket and the parallelly connected setting of double-phase socket for the electric motor car.

Two kinds of sockets are arranged so that most electric vehicles can use the battery pack, and two kinds of charging and discharging modes can be adopted.

The utility model discloses an in some embodiments, still be equipped with handle 123 and handle base 124 on the cap 120, handle base 124 sets up in the center of cap 120, and handle base 124 is rotationally connected with handle 123, is provided with the GPS module in the handle base 124.

The battery pack can obtain GPS positioning capability by arranging the GPS module, and when the battery pack is stolen and accidentally lost, the battery pack can be quickly positioned by the GPS module.

The utility model discloses an in some embodiments, be provided with the cotton material 112 of EVA bubble between casing 110 and the lower floor second module 220, the cotton material 112 of EVA bubble is used for buffering the pressure of battery module 200 to casing 110 bottom, is provided with the epoxy foam between casing 110 and the battery module 200, and the epoxy foam is used for fixed, buffering, insulating and protection battery module 200.

The utility model discloses an in some embodiments, be equipped with louvre 111 on the side of casing 110, louvre 111 distribution mode is the rectangle distribution.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims

1. A lithium ion battery pack for a low-speed electric vehicle is characterized by comprising:

the shell comprises a shell body and a shell cover, wherein the shell cover is arranged on the shell body, the shell body is connected with the shell cover through a bolt, and the shell body is a cuboid;

the battery module, the battery module is including first module and four second modules, from supreme four of having set gradually down in the casing the second module with first module, the second module is including sixty four second lithium cell monomers, sixty four second lithium cell monomer arrangement mode is eight rows and eight rows staggered distribution, first module is including sixteen first lithium cell monomer, and sixteen is first lithium cell monomer arrangement mode is two rows and eight rows staggered distribution, first module and four the electricity is connected between the second module.

2. The lithium ion battery pack for a low-speed electric vehicle according to claim 1, characterized in that: the first lithium battery monomer is horizontally arranged, and the second lithium battery monomer is vertically arranged.

3. The lithium ion battery pack for a low-speed electric vehicle according to claim 1, characterized in that: the positive and negative electrodes of the first module and the four second modules are connected through a strip copper conductor or a strip nickel conductor.

4. The lithium ion battery pack for a low-speed electric vehicle according to claim 1, characterized in that: a first FR4 epoxy board is arranged between the first module and the four second modules.

5. The lithium ion battery pack for a low-speed electric vehicle according to claim 4, wherein: the battery module is further provided with a PCB protection board, the PCB protection board is arranged on the uppermost layer of the first FR4 epoxy board of the second module, and the negative pole of the first module is electrically connected with the PCB protection board.

6. The lithium ion battery pack for a low-speed electric vehicle according to claim 1, characterized in that: the outer layer of battery module is provided with the fibre sticky tape, the width of fibre sticky tape is 50mm, the outer layer of fibre sticky tape is provided with second FR4 epoxy board.

7. The lithium ion battery pack for a low-speed electric vehicle according to claim 1, wherein: the shell cover is provided with a pin socket and two-phase sockets for the electric vehicle, the pin socket and the two-phase sockets for the electric vehicle are respectively electrically connected with the battery module, and the pin socket and the two-phase sockets for the electric vehicle are arranged in parallel.

8. The lithium ion battery pack for a low-speed electric vehicle according to claim 1, characterized in that: the shell cover is further provided with a handle and a handle base, the handle base is arranged at the center of the shell cover and rotatably connected with the handle, and a GPS module is arranged in the handle base.

9. The lithium ion battery pack for a low-speed electric vehicle according to claim 1, characterized in that: the casing with lower floor be provided with the cotton material of EVA bubble between the second module, the cotton material of EVA bubble is used for the buffering the pressure of battery module to the casing bottom, the casing with be provided with the epoxy foam between the battery module, the epoxy foam is used for fixing, buffering, insulating and protection the battery module.

10. The lithium ion battery pack for a low-speed electric vehicle according to claim 1, characterized in that: and heat dissipation holes are formed in one side surface of the shell and distributed in a rectangular mode.