CN212257498U

CN212257498U - Battery cell limiting structure, power battery pack and portable battery-replacing electric vehicle

Info

Publication number: CN212257498U
Application number: CN202021024105.8U
Authority: CN
Inventors: 周道辉
Original assignee: Dialev New Energy Automobile Co ltd
Current assignee: Dialev New Energy Automobile Co ltd
Priority date: 2020-06-06
Filing date: 2020-06-06
Publication date: 2020-12-29
Anticipated expiration: 2030-06-06

Abstract

The utility model provides an electricity core limit structure and power battery package and portable electric motor car that trades, the utility model provides an electricity core limit structure is used for in the battery package with a plurality of electric cores of array arrangement. This electric core limit structure is including installing in the electric core mount at electric core upper and lower both ends to and removable the spacing subassembly on electric core mount. The limiting assembly comprises a first connecting plate and a second connecting plate, wherein the first connecting plate is arranged between the battery cell and the shell of the battery pack, and the second connecting plate is connected to the first connecting plate and located between two adjacent battery cells. And a partition plate which can partition each battery cell is constructed on the second connecting plate. The utility model discloses an electricity core limit structure helps reducing the casing and takes place the probability of warping, improves the security of battery package.

Description

Battery cell limiting structure, power battery pack and portable battery-replacing electric vehicle

Technical Field

The utility model relates to an energy storage device production technical equipment field, in particular to electricity core limit structure more relates to a power battery package to and a portable electric motor car that trades.

Background

Electric vehicles have been developed in china for decades as a green sunward industry. On the electric vehicle side, the electric vehicles in china have reached 1.2 million by the end of 2010 and have grown at a rate of 30% per year. From the energy consumption perspective, the electric vehicle is only one twelfth of a car; from the development trend, the market prospect of the electric vehicle industry still looks good. In recent years, lithium battery cells are widely used in the field of power batteries, and are often used as battery cells of battery packs of electric vehicles. The battery package includes casing and a plurality of electric core, and a plurality of electric cores are array and arrange in the casing, and electric core arranges along the length direction of electric core has the multiseriate promptly, and every thickness direction of arranging along electric core has a plurality of electric cores, and the underrun structure of electric core glues and splices with the casing. In order to guarantee that the distance after electric core arranges is unanimous, set up to the zero clearance between the electric core usually, do not have the space between the main plane of two adjacent electric cores promptly, and electric core in the use, the main plane can take place the inflation and warp, and this can't provide the deformation space for the inflation of electric core, can cause the casing on every side to take place to warp, produces the potential safety hazard.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing an electricity core limit structure helps reducing the probability that the casing takes place to warp, improves the security of battery package.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

a battery cell limiting structure is used in a battery pack with a plurality of battery cells arranged in an array manner, and comprises a battery cell fixing frame and a limiting assembly, wherein the battery cell fixing frame is arranged at the upper end and the lower end of the battery cell, and the limiting assembly can be detachably arranged on the battery cell fixing frame; the limiting assembly comprises a first connecting plate and a second connecting plate, wherein the first connecting plate is arranged between the battery cells and the shell of the battery pack, and the second connecting plate is connected to the first connecting plate and is positioned between two adjacent battery cells; and a partition board capable of partitioning each battery cell is constructed on the second connecting board.

Furthermore, an inserting block is arranged on the side face of the battery cell fixing frame, and a corresponding sliding groove is formed in the limiting assembly and corresponds to the inserting block.

Further, an electrode port is arranged at the top of the battery cell fixing frame and used for electric connection between the battery cells.

Furthermore, raised spacing blocks are arranged at the top of the battery cell fixing frame and around the electrode ports at intervals.

Furthermore, on the electric core fixing frame, a flame-retardant piece is arranged adjacent to the electric core.

Furthermore, the second connecting plate is provided with heat dissipation holes.

Further, the first and second connection plates are of unitary construction.

Compared with the prior art, the utility model discloses following advantage has:

(1) electric core limit structure, use through setting up electric core mount and spacing subassembly cooperation, simultaneously, set up first connecting plate and second connecting plate can be better cut apart installation electric core, can reduce the probability that the casing takes place to warp, improve the security of battery package.

(2) The installation of setting up plug-in block and spout can constitute electric core fixed frame on spacing subassembly through the cartridge, simple structure simple to operate.

(3) The provision of the electrode ports may facilitate electrical connection between the cells.

(4) The battery cell can be better cooled by adopting the raised spacing blocks.

(5) The danger of damage to the battery cell in the battery pack can be avoided by arranging the flame-retardant piece.

(6) The battery cell can be better cooled by the heat dissipation holes.

(7) The integrally constructed first and second connection plates may reduce production costs.

Another object of the present invention is to provide a power battery pack, which includes a lower casing, an upper casing, and a battery module installed in a cavity formed by the lower casing and the upper casing; the battery module including be a plurality of electric cores of array range and set up in if at electric core both ends the utility model discloses in electric core limit structure.

The utility model provides a power battery package has the same beneficial effect with foretell electric core limit structure, no longer gives unnecessary details here.

Another object of the utility model is to provide a portable electric motor car that trades is installed as in the utility model discloses a power battery package.

The utility model provides a portable electric motor car that trades has the same beneficial effect with foretell electric core limit structure, no longer gives unnecessary details here.

Drawings

The accompanying drawings, which form a part of the present disclosure, are provided to provide a further understanding of the present disclosure, and the exemplary embodiments and descriptions thereof are provided to explain the present disclosure, wherein the related terms in the front, back, up, down, and the like are only used to represent relative positional relationships, and do not constitute an undue limitation of the present disclosure. In the drawings:

fig. 1 is a schematic view of an installation structure of a battery cell limiting structure 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;

fig. 3 is a schematic structural diagram of a battery cell unit according to an embodiment of the present invention;

fig. 4 is a schematic structural view of a limiting assembly according to an embodiment of the present invention;

description of reference numerals:

101-lower shell, 102-upper shell, 103-handle; 2-battery module, 201-battery cell, 202-battery cell fixing frame, 203-flame retardant piece, 204-plug block, 205-spacing block, 206-electrode port; 3-limiting component, 301-first connecting plate, 302-second connecting plate, 303-sliding groove, 304-heat dissipation hole and 305-partition plate.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, terms of left, right, up, down, and the like are used for convenience of description and are based on terms in the illustrated state, and should not be construed as limiting the structure of the present invention; references to first and second are for convenience of description and are not to be construed as indicating or implying relative importance.

Example one

The embodiment relates to a battery core limiting structure, which can help to reduce the probability of deformation of a shell and improve the safety of a battery pack. The battery cell limiting structure is used in a battery pack with a plurality of battery cells arranged in an array manner, and comprises battery cell fixing frames arranged at the upper end and the lower end of a battery cell and limiting assemblies with detachable battery cell fixing frames. The limiting assembly comprises a first connecting plate and a second connecting plate, wherein the first connecting plate is arranged between the battery cell and the shell of the battery pack, and the second connecting plate is connected to the first connecting plate and located between two adjacent battery cells. And a partition board capable of dividing each battery cell is constructed on the second connecting board.

Based on the above general structural principles, the present invention will be described in detail with reference to the accompanying drawings in conjunction with embodiments. The battery cell limiting structure of the embodiment can be used in a battery pack with a plurality of battery cells 201 arranged in an array manner, and an exemplary structure of the battery cell limiting structure is shown in fig. 1-2, and mainly comprises a battery cell fixing frame 202 installed at the upper end and the lower end of the battery cell 201, and a limiting assembly 3 of the detachable battery cell fixing frame 202. The limiting assembly 3 comprises a first connecting plate 301 and a second connecting plate 302 vertically connected to the first connecting plate 301, the first connecting plate 301 is arranged between the battery cells 201 and the shell of the battery pack, and the second connecting plate 302 is located between two adjacent battery cells 201; a partition board 305 capable of separating each cell is configured on the second connection board 302, and in this embodiment, the partition board 305 is disposed at the bottom of the second connection board 302.

In order to better implement the installation of the battery cell, as shown in fig. 3-4, an insertion block 204 is disposed on a side surface of the battery cell fixing frame 202, and a corresponding sliding groove 303 is disposed on the limiting component 3 and corresponds to the insertion block 204. The installation of the battery cell fixing frame 202 on the limiting component 3 can be formed by inserting the inserting block 204 and the sliding groove 303, and the structure is simple and the installation is convenient. In this embodiment, the insertion blocks 204 are disposed on four side surfaces of the battery cell fixing frame 202, or only one or a few insertion blocks 204 may be disposed, and in order to ensure structural insertion firmness, the cross section of the insertion block 204 is configured to be trapezoidal, and the upper bottom edge of the trapezoidal shape is disposed on the battery cell fixing frame 202.

Based on the above structure, an electrode port 206 is provided at the top of the cell holder 202 for electrical connection between the cells 201. The nickel strap can be welded on the electrode ports 206 of the two adjacent cell fixing frames 202, so that the positive electrode and the negative electrode of the cell can be connected with the conductive nickel strap, and the energy output of the cell is realized.

In order to reduce the problem of damage to the battery cell, raised spacers 206 are configured at the top of the battery cell fixing frame 202 at intervals of the ring electrode ports 207, the raised spacers 206 are configured at the top of the battery cell fixing frame 202 at intervals of the ring electrode ports 207, and the flame retardant piece 203 is arranged in the battery cell fixing frame 202. The raised spacer blocks 206 are arranged to better facilitate heat circulation, so that the situation that other electric cores in the battery module are subjected to chain thermal runaway reaction after the thermal runaway of a single electric core is avoided. The flame-retardant member 3 is an existing device and can be purchased and used directly. The flame retardant member 3 can reduce the temperature of the thermal runaway cell by absorbing heat. After the absorbed heat reaches a certain temperature, liquefaction occurs firstly, then the absorbed heat continues to be absorbed, and gasification occurs, so that the temperature of the electric core out of thermal control is reduced, chain reaction of thermal control caused by other electric cores after single electric core out of thermal control is avoided, and the safety coefficient of use of the electric core is improved. The heat management of the core is realized, and the damage of the battery core is avoided.

Meanwhile, in order to optimize the above structure, heat dissipation holes 304 are provided on the second connection plate 302. The heat dissipation holes 304 are arranged to better cooperate with the spacer blocks 206 to dissipate heat of the battery cell.

In the present embodiment, the first connecting plate 301 and the second connecting plate 302 are of an integral construction. The use of the first connecting plate 301 and the second connecting plate 302 in an integral configuration can reduce the production cost. However, the second connecting plate 302 may be fixed to the first connecting plate 301 in other manners, and the first connecting plate 301 and the second connecting plate 302 may be connected by splicing, inserting, or bolting. First connecting plate 301 is installed between the casing of electric core mount 202 and battery package, and every two both ends of first connecting plate 301 are connected fixedly, and then realize the smooth installation of electric core mount 202 in the battery package. And the second connecting plate 302 is located between the main planes of two adjacent battery cells 201, so as to divide the two adjacent battery cells 201. In as shown in fig. 2, the above-mentioned electric core limiting structure is used in the battery module 2 composed of four electric core units, wherein the second connecting plate 302 is jointed, and if the splicing mode, the insertion mode or the bolt fixing mode can avoid the problem of incapability of installation through the dislocation mode and the like.

Adopt above-mentioned embodiment's electric core limit structure to use through setting up electric core mount 202 and spacing subassembly 3 cooperation, set up first connecting plate 301 and second connecting plate 302 can be better cut apart installation electric core 201, can reduce the probability that the casing takes place to warp, improve the security of battery package.

Example two

The embodiment relates to a power battery pack, which comprises a lower shell 101, an upper shell 102 and a battery module 2 arranged in a cavity formed by the lower shell 101 and the upper shell 102. The battery module 2 includes a plurality of cells 201 arranged in an array, and a cell limiting structure disposed on the cells 201 as in the first embodiment.

The power battery pack of the embodiment can help to reduce damage and maintenance of the power battery pack by arranging the battery core limiting structure in the first embodiment.

EXAMPLE III

The embodiment relates to a portable battery replacing electric vehicle, wherein a power battery pack in the second embodiment is mounted on a vehicle body.

The portable battery-replacing electric vehicle of the embodiment is provided with the power battery pack according to the second embodiment, so that the service life of the electric vehicle is prolonged, the maintenance frequency is reduced, the replacement of the power battery pack is avoided, and the living cost is reduced.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a battery limit structure for in the battery package of a plurality of batteries (201) with array arrangement, its characterized in that: the battery cell fixing frame comprises a battery cell fixing frame (202) arranged at the upper end and the lower end of the battery cell (201), and a limiting assembly (3) which can be disassembled on the battery cell fixing frame (202); the limiting assembly (3) comprises a first connecting plate (301) arranged between the battery cells (201) and the shell of the battery pack, and a second connecting plate (302) connected to the first connecting plate (301) and positioned between two adjacent battery cells (201); the second connecting plate (302) is provided with a separating plate (305) which can separate the electric cores (201).

2. The cell limit structure of claim 1, wherein: an inserting block (204) is arranged on the side surface of the electric core fixing frame (202), and a corresponding sliding groove (303) is arranged on the limiting component (3) corresponding to the inserting block (204).

3. The cell limit structure of claim 2, wherein: an electrode port (206) is arranged at the top of the battery cell fixing frame (202) and used for electric connection between the battery cells (201).

4. The cell limiting structure of claim 3, wherein: and raised spacing blocks (205) are arranged at the top of the battery cell fixing frame (202) and around the electrode port (206) at intervals.

5. The battery cell limiting structure according to any one of claims 1 to 4, wherein: and a flame-retardant piece (203) is arranged on the battery cell fixing frame (202) and is adjacent to the battery cell (201).

6. The cell limit structure of claim 1, wherein: the second connecting plate (302) is provided with heat dissipation holes (304).

7. The cell limit structure of claim 6, wherein: the first connecting plate (301) and the second connecting plate (302) are of unitary construction.

8. A power battery pack comprises a lower shell (101), an upper shell (102) and a battery module (2) arranged in a cavity formed by the lower shell (101) and the upper shell (102); battery module (2) are including being a plurality of electric cores (201) of array arrangement, its characterized in that: and the battery cell limiting structures as described in claims 1 to 7 arranged at two ends of the battery cell (201).

9. The utility model provides a portable electric motor car that trades which characterized in that: the power battery pack as claimed in claim 8 is mounted on a vehicle body.