CN110600642B

CN110600642B - Lithium battery cell structure

Info

Publication number: CN110600642B
Application number: CN201910753963.1A
Authority: CN
Inventors: 孙其勇
Original assignee: Anhui Wuxing Power New Energy Co ltd
Current assignee: Anhui Wuxing Power New Energy Co ltd
Priority date: 2019-08-15
Filing date: 2019-08-15
Publication date: 2021-12-07
Anticipated expiration: 2039-08-15
Also published as: CN110600642A

Abstract

The invention discloses a lithium battery cell structure, which comprises a battery outer box, a box cover and a battery, wherein the battery is placed in the battery outer box, a partition plate is fixedly arranged in the battery outer box, a plurality of placing grooves penetrating through the partition plate are formed in the partition plate, a fixing plate vertical to the partition plate is slidably arranged in each placing groove, a fastening groove parallel to the partition plate is formed in each partition plate, a fastening rod is slidably arranged in each fastening groove and fixedly connected with the fixing plate, one end of each fastening rod penetrates through the battery outer box and extends to the outer side of the battery outer box, a U-shaped frame used for adjusting the fastening rod is fixedly arranged in the middle of one end of the battery outer box, the fixing plate can fix the battery, the fastening rod can adjust the pre-tightening force of the fixing plate on the battery, the battery can be prevented from shaking and can be adjusted by using a fastening bolt, so that the adjustment is more convenient.

Description

Lithium battery cell structure

Technical Field

The invention relates to the technical field of lithium batteries, in particular to a battery core structure of a lithium battery.

Background

With the development of the automobile industry, electric automobiles are increasingly used, and lithium ion batteries are developed as main power batteries due to the capability of repeated charging and high energy density, therefore, lithium batteries are increasingly used in electric vehicles, a power supply system used in the vehicle is formed by connecting a plurality of lithium batteries in parallel to supply power to the vehicle, the lithium batteries for supplying power to the vehicle are called as battery modules or battery cores, when the battery core of the lithium battery is installed, the battery core cannot be fastened because the size of the installation groove of the installation plate for placing the battery is fixed, the battery core is easy to shake, the connection between the electric cores is usually manually connected through a lead, the connection position adopts bolts or welding, after long-term use, the bolt is easy to loosen or the welding part is easy to oxidize to cause the problem of heat generation of the contact point.

Disclosure of Invention

The invention aims to provide a lithium battery cell structure, which solves the problems that in the background technology, due to the fact that the size of a mounting groove of a mounting plate for placing a battery is fixed, the battery cell cannot be fastened, the battery cell is prone to shaking, connection between the battery cells is often manually connected through a wire, a connection position is connected through a bolt or welded, and after long-time use, the bolt is prone to loosening or the welding position is prone to oxidation, and therefore a contact point is prone to generate heat.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a lithium cell electricity core structure, includes battery outer container, case lid and battery, the battery is placed in the inside of battery outer container, the inside fixed mounting of battery outer container has the baffle, set up a plurality of standing grooves that run through the baffle on the baffle, the inside slidable mounting of standing groove has the fixed plate perpendicular with the baffle, the fastening groove parallel with the baffle is seted up to the inside of baffle, the inside slidable mounting of fastening groove has the anchorage bar, anchorage bar and fixed plate fixed connection, just the one end of anchorage bar runs through the battery outer container and extends to the outside of battery outer container, the one end middle part fixed mounting of battery outer container has the U type frame that is used for adjusting the anchorage bar.

Preferably, the one end that the anchorage bar stretches out the battery outer container is seted up threadedly, the fixed rotation in the screw thread outside is installed fastening bolt, is located the anchorage bar outside of U type frame inside is installed the spring, the one end and the anchorage bar fixed connection of spring, the other end and the inside wall fixed connection of U type frame.

Preferably, the locating slot has been seted up to battery outer container mutually perpendicular's lateral wall, the locating slot is isosceles triangle, and the degree of depth of locating slot is less than the wall thickness of battery outer container, case lid mutually perpendicular's lateral wall is provided with locating piece of locating slot assorted with the body, battery outer container four corners upper end fixed mounting has the installation pole, set up on the case lid with installation pole assorted mounting hole.

Preferably, install the polar plate on the battery, the polar plate includes pole piece and utmost point post, pole piece fixed mounting is in the below of utmost point post, the top fixed mounting of utmost point post has the flexure strip, be provided with the recess between the flexure strip, spherical groove has been seted up to the upper end of utmost point post, the diameter of the face of cylinder that the flexure strip inboard constitutes is four fifths of spherical groove diameter.

Preferably, the bottom fixed mounting of case lid has with spherical groove assorted spherical spliced pole, the upper end fixedly connected with of spherical spliced pole leads electrical pillar, the fixed support column that is provided with in the outside of leading electrical pillar, the fixed slot that is used for placing the flexure strip is offered to the bottom surface of support column, the edge of fixed slot is provided with the chamfer and makes the fixed slot opening be tubaeform, lead the inside that electrical pillar extends to the case lid, and be located the inside one end fixed mounting of case lid and have the conducting strip, it installs the insulating layer to lead electrical pillar and the conducting strip outside.

Preferably, the conducting strips correspond to the positions of the polar plates, and the conducting strip above the positive electrode of one battery is connected with the negative conducting strip above the other battery through a conducting strip.

Preferably, the side wall of the battery outer box is provided with a sliding chute matched with the fixing plate, and the length of the sliding chute is the same as that of the placing groove.

Preferably, the conductive posts, the conductive sheets and the conductive strips are made of conductive metal materials or conductive graphite.

Preferably, the support posts and the insulating layer are insulating ceramics.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, the fixing plate can fix the battery, the fastening rod can adjust the pre-tightening force of the fixing plate for fastening the battery, the battery can be prevented from shaking, and the fastening bolt is used for adjustment, so that the adjustment is more convenient.

2. Pole piece and spherical spliced pole and conducting strip, the positive negative pole wiring of battery in the installation has been avoided, work efficiency is greatly improved, and flexure strip and fixed slot play fixed effect to the spherical spliced pole, can prevent rocking between pole piece and the spherical spliced pole and cause the insecure problem of connection, also can avoid the condition that the contact point that appears owing to the insecure connection generates heat, the connection piece constitutes a power supply system with adjacent battery, the in-process of installation has avoided the parallel connection line between the battery, the work load has been reduced, work efficiency is greatly improved.

Drawings

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

FIG. 2 is a schematic diagram of the outer case of the battery of the present invention;

FIG. 3 is a cross-sectional view of the outer case of the battery of the present invention;

FIG. 4 is a schematic diagram of a plate structure according to the present invention;

FIG. 5 is a cross-sectional view of a plate of the present invention;

FIG. 6 is a cross-sectional view of a ball joint column of the present invention;

FIG. 7 is a diagram of a conductive sheet according to the present invention.

In the figure: 1. a battery outer case; 2. a box cover; 3. positioning blocks; 4. mounting a rod; 41. mounting holes; 5. a U-shaped frame; 6. a battery; 7. a polar plate; 71. pole pieces; 72. a pole column; 73. an elastic sheet; 74. a groove; 75. a spherical groove; 8. positioning a groove; 9. a fixing plate 10 and a placing groove; 101. a chute; 11. a partition plate; 111. a fastening groove; 12. a fastening rod; 121. a spring; 122. Fastening a bolt; 13. a support pillar; 131. fixing grooves; 14. a conductive sheet; 15. an insulating layer; 16. a spherical connecting column; 161. a conductive post; 17 conductive strips.

Detailed Description

The invention provides a lithium battery core structure, which aims to solve the problems that the battery core is easy to shake due to the fact that the size of a mounting groove for placing a battery of a mounting plate is fixed, the battery core cannot be fastened, the battery cores are often connected manually through a wire, a connection part is connected through a bolt or welded, and after long-time use, the bolt is easy to loosen or the welding part is easy to oxidize to cause heating of a contact point. The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

Referring to fig. 1-3, the present embodiment provides a cell structure of a lithium battery, which includes an outer case 1, a case cover 2 and a battery 6, the battery 6 is arranged in the battery outer box 1, a clapboard 11 is fixedly arranged in the battery outer box 1, a plurality of placing grooves 10 penetrating through the partition plate 11 are arranged on the partition plate 11, a fixing plate 9 vertical to the partition plate 11 is slidably arranged in the placing grooves 10, the inner part of the partition 11 is provided with a fastening groove 111 parallel to the partition 11, the fastening groove 111 is internally provided with a fastening rod 12 in a sliding way, the fastening rod 12 can carry the fixing plate 9 to slide in the placing groove 10 for fixing the battery 6, the fastening rod 12 is fixedly connected with the fixing plate 9, and one end of the fastening rod 12 penetrates the battery outer case 1 and extends to the outside of the battery outer case 1, and a U-shaped frame 5 for adjusting the fastening rod 12 is fixedly arranged in the middle of one end of the battery outer box 1.

Wherein, the one end that fastening rod 12 stretches out battery outer container 1 is seted up threadedly, screw thread outside fixed rotation installs fastening bolt 122, and fastening bolt 122 can be used for adjusting fastening rod 12's position for slide in standing groove 10 dead lever 9, be located spring 121 is installed in the inside fastening rod 12 outside of U type frame 5, spring 121's one end and fastening rod 12 fixed connection, the other end and U type frame 5's inside wall fixed connection, spring 121 are used for playing the effect that always supports to fastening rod 12, and the slack of fastening bolt 122 when can preventing to rock increases fastening bolt 122 fastness.

In this embodiment, constant head tank 8 has been seted up to 1 mutually perpendicular's of battery outer container lateral wall, constant head tank 8 is isosceles triangle, and the degree of depth of constant head tank 8 is less than 1 wall thickness of battery outer container, and is preferred, and the degree of depth of constant head tank 8 is two-thirds of 1 wall thickness of battery outer container, 2 mutually perpendicular's of case lid lateral wall with the body be provided with constant head tank assorted locating

piece

3, 1 four corners upper end fixed mounting of battery outer container has installation pole 4, set up on case lid 2 with 4 assorted mounting holes 41 of installation pole, the installation pole 4 outside can the construction bolt, can play fixed effect to case lid 2.

When fixing battery 6, only need place battery 6 between the fixed plate 9 of the inside of battery outer container 1, then through rotating fastening bolt 122, fixed plate 9 will be under the drive of anchorage bar 12, toward the one end removal of battery outer container 1, thereby press from both sides tightly battery 6, play the fastening effect to battery 6, place the vibrations of battery 6, it is fixed more convenient, when needing to dismantle battery 6, only need the reverse rotation fastening bolt 122, make fixed plate 9 relax the clamp force of battery 6, can take off the battery.

Referring to fig. 4-7, a further improvement is made on the basis of embodiment 1: the battery 6 is provided with a pole plate 7, the pole plate 7 comprises a pole piece 71 and a pole post 72, the pole piece 71 is fixedly arranged below the pole post 72, the pole piece 71 is arranged inside the battery 6 and used for leading out electric energy inside the battery 6, the pole post 72 is used for connecting the battery 6 with an external circuit so as to supply power to the outside of the battery 6, an elastic sheet 73 is fixedly arranged above the pole post 72, a groove 74 is arranged between the elastic sheets 73, the upper end of the pole post 72 is provided with a spherical groove 75, and the diameter of a cylindrical surface formed on the inner side of the elastic sheet 73 is four fifths of the diameter of the spherical groove 75; the bottom of the box cover 2 is fixedly provided with a spherical connecting column 16 matched with the spherical groove 75, the upper end of the spherical connecting column 16 is fixedly connected with a conductive column 161, the outer side of the conductive column 161 is fixedly provided with a supporting column 13, the bottom surface of the supporting column 13 is provided with a fixing groove 131 for placing an elastic sheet 73, the depth of the fixing groove 131 is 2-5mm, when the box cover 2 is taken down, the elastic sheet 73 can be prevented from shielding the spherical connecting column 16, the elastic sheet 73 is fixed, the edge of the fixing groove 131 is provided with a chamfer 132 so that the opening of the fixing groove 131 is horn-shaped, the fixing of the fixing groove 131 on the elastic sheet 73 is facilitated, the spherical connecting column 16 is prevented from shaking up and down in the spherical groove 75 when shaking, the conductive column 161 extends to the inside of the box cover 2, and one end in the box cover 2 is fixedly provided with a conductive sheet 14, it installs insulating layer 15 to lead electrical pillar 161 and conducting strip 14 outside, and recess 74 provides the space that moves to the inboard for flexure strip 73, conveniently to the electricity of utmost point post 72 and spherical spliced pole 16 and to the fixed of joining in marriage electrical back to spherical spliced pole 16, and flexure strip 73 can play fixed and spacing effect to installing the contact ball in spherical groove 75 inside, prevents rocking of spherical spliced pole 16, influences normal use, wherein, it is conductive metal material or conductive graphite to lead electrical pillar 161, conducting strip 14 and conducting strip 17, support column 13 and insulating layer 15 are insulating ceramic.

The positions of the conducting strips 14 correspond to the positions of the pole plates 7, wherein the conducting strip above the positive pole of one battery 6 is connected with the negative conducting strip above the other battery 6 through a conducting strip 17, so that different batteries 6 are connected in parallel to form a power supply loop.

According to any of the above embodiments, referring to fig. 3, the side wall of the battery outer case 1 is provided with the sliding groove 101 matched with the fixing plate 9, and the length of the sliding groove 101 is the same as that of the placing groove 10, so that the stability of the fixing plate 9 can be improved.

In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be further noted that, unless otherwise specifically stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, integrally connected, mechanically connected, electrically connected, directly connected, connected through an intermediate medium, or connected through the insides of two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a lithium cell electricity core structure, includes battery outer container (1), case lid (2) and battery (6), place in the inside of battery outer container (1) battery (6), its characterized in that: the battery outer box is characterized in that a partition plate (11) is fixedly mounted inside the battery outer box (1), a plurality of placing grooves (10) penetrating through the partition plate (11) are formed in the partition plate (11), a fixing plate (9) perpendicular to the partition plate (11) is slidably mounted inside the placing grooves (10), fastening grooves (111) parallel to the partition plate (11) are formed in the partition plate (11), fastening rods (12) are slidably mounted inside the fastening grooves (111), the fastening rods (12) are fixedly connected with the fixing plate (9), one ends of the fastening rods (12) penetrate through the battery outer box (1) and extend to the outer side of the battery outer box (1), and a U-shaped frame (5) used for adjusting the fastening rods (12) is fixedly mounted in the middle of one end of the battery outer box (1).

2. The lithium battery cell structure of claim 1, wherein: the one end that anchorage bar (12) stretched out battery outer container (1) is seted up threadedly, fastening bolt (122) are installed in the fixed rotation in the screw thread outside, are located inside anchorage bar (12) the outside of U type frame (5) is installed spring (121), the one end and the anchorage bar (12) fixed connection of spring (121), the inside wall fixed connection of the other end and U type frame (5).

3. The lithium battery cell structure of claim 1, wherein: constant head tank (8) have been seted up to battery outer container (1) mutually perpendicular's lateral wall, constant head tank (8) are isosceles triangle, and the degree of depth of constant head tank (8) is less than the wall thickness of battery outer container (1), case lid (2) mutually perpendicular's lateral wall is provided with constant head tank assorted locating piece (3) with the body, battery outer container (1) four corners upper end fixed mounting has installation pole (4), set up on case lid (2) with installation pole (4) assorted mounting hole (41).

4. The lithium battery cell structure of claim 1, wherein: install polar plate (7) on battery (6), polar plate (7) include pole piece (71) and utmost point post (72), pole piece (71) fixed mounting is in the below of utmost point post (72), the top fixed mounting of utmost point post (72) has elastic sheet (73), be provided with recess (74) between elastic sheet (73), spherical groove (75) have been seted up to the upper end of utmost point post (72), the diameter of the face of cylinder that elastic sheet (73) inboard constitutes is four fifths of spherical groove (75) diameter.

5. The lithium battery cell structure of claim 4, wherein: the utility model discloses a novel energy-saving gas stove, including case lid (2), bottom fixed mounting of case lid (2) have with spherical groove (75) assorted spherical spliced pole (16), the upper end fixedly connected with of spherical spliced pole (16) leads electrical pillar (161), the fixed support column (13) that is provided with in the outside of leading electrical pillar (161), fixed slot (131) that are used for placing flexure strip (73) are offered to the bottom surface of support column (13), the edge of fixed slot (131) is provided with chamfer (132) and makes fixed slot (131) opening be tubaeform, lead the inside that electrical pillar (161) extend to case lid (2), and be located the inside one end fixed mounting of case lid (2) and have conducting strip (14), insulating layer (15) are installed in conductive pillar (161) and conducting strip (14) outside.

6. The lithium battery cell structure of claim 5, wherein: the conducting strips (14) correspond to the positions of the polar plates (7), and the conducting strip above the positive electrode of one battery (6) is connected with the negative conducting strip above the other battery (6) through a conducting strip (17).

7. The lithium battery cell structure of claim 1, wherein: the side wall of the battery outer box (1) is provided with a sliding chute (101) matched with the fixing plate (9), and the length of the sliding chute (101) is the same as that of the placing groove (10).

8. The lithium battery cell structure of claim 6, wherein: the conductive column (161), the conductive sheet (14) and the conductive strip (17) are made of conductive metal materials or conductive graphite.

9. A lithium battery cell structure according to claim 5 or 6, characterized in that: the supporting columns (13) and the insulating layers (15) are made of insulating ceramics.