CN219457951U

CN219457951U - Battery pole and high-capacity battery

Info

Publication number: CN219457951U
Application number: CN202223613731.2U
Authority: CN
Inventors: 席彪; 雷政军; 刘毅
Original assignee: Shaanxi Olympus Power Energy Co Ltd
Current assignee: Shaanxi Olympus Power Energy Co Ltd
Priority date: 2022-08-29
Filing date: 2022-08-29
Publication date: 2023-08-01
Anticipated expiration: 2032-08-29

Abstract

The utility model discloses a battery pole and a high-capacity battery, wherein the battery pole is arranged in a high-capacity battery shell, the pole is respectively provided with a substrate, a plurality of fins and a baffle, one end of each fin is convexly arranged on the substrate, the baffle is fixedly connected with the other end of each fin, and the substrate, the fins and the baffle form a plurality of heat dissipation channels. The utility model provides a utmost point post has set up the fin of heat dissipation usefulness and has set up the baffle along the fin, has improved the radiating area of utmost point post greatly, makes the heat that the utmost point post was accumulated in time disperse, simple structure, practicality are strong, and the electricity core is installed conveniently, and is with low costs.

Description

Battery pole and high-capacity battery

Technical Field

The utility model relates to the technical field of batteries, in particular to a battery pole and a high-capacity battery.

Background

The lithium ion battery has the advantages of high energy density, long cycle life, small self-discharge, no memory effect, good low-temperature performance, low maintenance cost, quick charge, high efficiency, long heavy current discharge time and the like, and is the first choice of a large-scale energy storage and power supply.

When the battery heats, the pole is a part with heat mainly concentrated, the existing pole structure has small area and poor heat dissipation, and heat is easily accumulated to cause the danger of the battery.

CN1 13300025a discloses a battery, which relates to the technical field of new energy batteries. The battery comprises a shell and at least one electric core arranged in the shell, wherein the shell is provided with a positive pole column and a negative pole column, the positive pole column and the negative pole column are respectively electrically connected with the positive pole and the negative pole of the electric core, electrolyte is filled in the shell, the battery further comprises a heat conducting layer, and the periphery of the electric core is coated with the heat conducting layer. The utility model not only can integrally reduce the temperature rise condition of the battery, but also can uniformly dissipate heat, so that the temperature inside the battery becomes more uniform, the restriction of heat factors on the single battery capacity is eliminated, and the service life and the safety performance of the high-capacity battery are ensured. The structure of the pole in this application is close to traditional structure, and pole volume is little, and the radiating effect is not good.

CN213692275U discloses a pouch battery adapter plate and a pouch battery, and the patent uses a PCB substrate to weld the tabs of the pouch battery together, thereby forming an electrical connection between the pouch batteries. The connection mode has the advantages of smaller current carrying, higher cost and more complicated process.

The problem of heat dissipation and current carrying of the battery pole is a problem to be solved urgently.

Disclosure of Invention

In order to solve the problems, the utility model adopts a technical scheme that a battery pole is provided and is arranged in a high-capacity battery shell, the pole is respectively provided with a substrate, a plurality of fins and a baffle plate, one end of each fin is convexly arranged on the substrate, the baffle plate is fixedly connected with the other end of each fin, and the substrate, the fins and the baffle plate form a plurality of heat dissipation channels.

Preferably, a heat pipe fixing groove is formed in the length direction.

Preferably, the heat dissipation channels extend in parallel along the length direction of the substrate.

Preferably, the baffle is arched.

Preferably, the pole includes a first region, a second region, and a third region, and the width of the fins in the first region and the third region is lower than the width of the fins in the second region.

Preferably, the width of the fin of the first region close to the second region is higher than the width of the fin of the first region far from the second region; the width of the fin, which is close to the second area, of the third area is higher than the width of the fin, which is far away from the second area, of the third area; the width of the fins of the second region near the first region and the third region is lower than the width of the fins in the middle of the second region.

In order to solve the problems, the utility model adopts a technical scheme that the high-capacity battery comprises a battery core, a shell and a pole, wherein the battery core is stacked along the length direction of the shell in the thickness direction, and the pole is arranged at two sides of the stacked battery core and extends along the stacking direction of the battery core; the fins are fixedly arranged on one surface of the substrate, which is opposite to the battery cell, and the battery cell is electrically connected to the substrate.

Preferably, a plurality of channels of the polar post are filled with heat absorbing materials.

Preferably, the heat absorbing material is a phase change material.

The utility model has the beneficial effects that: the utility model provides a utmost point post has set up the fin of heat dissipation usefulness and has set up the baffle along the fin, has improved the heat dissipation and the current-carrying area of utmost point post greatly, makes the heat that the utmost point post was accumulated in time disperse, simple structure, practicality are strong, and the electricity core is installed conveniently, and is with low costs.

Additional advantages, objects, and features of the utility model will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the utility model.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a pole in one embodiment;

FIG. 2 is a schematic view of a pole in one embodiment;

FIG. 3 is a schematic view of a pole in one embodiment;

fig. 4 is a schematic structural view of a large-capacity battery according to an embodiment;

fig. 5 is a schematic view of the structure of a large-capacity battery in one embodiment.

Reference numerals:

100-cell casing

200-temperature control system

221-heat pipe

400-polar column

41-substrate

42-fin

421-baffle

431-first area

432-second region

433-third region

44-heat pipe fixing groove

45-connecting hole of connecting terminal

46-mounting hole

500-explosion venting assembly

600-shell

Detailed Description

Although embodiments of the utility model have been disclosed above, they are not limited to the use listed in the specification and embodiments. It can be applied to various fields suitable for the present utility model. Additional modifications will readily occur to those skilled in the art. Therefore, the utility model is not to be limited to the specific details and illustrations shown and described herein, without departing from the general concepts defined in the claims and their equivalents.

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.

Hereinafter, a battery post and a large-capacity battery according to the present application are specifically disclosed with reference to the drawings. However, unnecessary detailed description may be omitted. For example, detailed descriptions of well-known matters and repeated descriptions of the actual same structure may be omitted. This is to avoid that the following description becomes unnecessarily lengthy, facilitating the understanding of those skilled in the art. Furthermore, the drawings and the following description are provided for a full understanding of the present application by those skilled in the art, and are not intended to limit the subject matter recited in the claims.

All embodiments and alternative embodiments of the present application may be combined with each other to form new solutions, unless specifically stated otherwise. All technical features and optional technical features of the present application may be combined with each other to form new technical solutions, unless specified otherwise.

Reference herein to "comprising" and "including" means open ended, as well as closed ended, unless otherwise noted. For example, "comprising" and "including" may mean that other components not listed may also be included or included, or that only listed components may be included or included.

It is further understood that the terms "first," "second," and the like, are merely used to distinguish one entity or action from another entity or action and do not necessarily require or imply any actual relationship or order between such entities or actions.

Example 1

As shown in fig. 1 to 3, a battery pole 400 is schematically shown, the pole 400 is used for a large-capacity battery, the pole 400 is fixedly disposed at two sides of a cell housing 100 stacked along a longitudinal direction of the housing, and the pole 400 extends along the stacking direction of the cell housing 100.

The pole 400 is respectively provided with a substrate 41, a plurality of fins 42 and a baffle 421, one end of each fin 42 is convexly arranged on the substrate 41, the baffle 421 is fixedly connected with the other end of each fin 42, and the fins 42 are arranged to form a plurality of heat dissipation channels. The heat dissipation channels extend in parallel along the length direction of the substrate 41. In some embodiments, fins 42 extend along the length of base 41 in a wavy or zigzag arrangement. The heat dissipation channel is filled with heat absorbing materials. In some embodiments, the heat absorbing material is a phase change material, in particular a paraffin composite material.

The post 400 includes a first region 431, a second region 432, and a third region 433, with the width of the fins 42 in the first region 431 and the third region 433 being lower than the width of the fins 42 in the second region 432. In some embodiments, the baffle 421 is arcuate. The width of fin 42 of first region 431 adjacent to second region 432 is greater than the width of fin 42 of first region 431 remote from second region 432; the width of fin 42 of third region 433 adjacent to second region 432 is greater than the width of fin 42 of third region 433 remote from second region 432. The width of fins 42 in second region 432 adjacent to first region 431 and the width of fins 42 in second region 432 adjacent to third region 433 are lower than the width of fins 42 in second region 432. The cross-section of the post 400 has a profile shape that approximates a semicircle.

As shown in fig. 1 and 2, in some embodiments, a heat pipe fixing groove 44 is further provided at one side of the base plate 41 to fix the heat pipe 221 of the high-capacity battery to the pole 400 to conduct and absorb heat of the pole 400.

As shown in fig. 2, in some embodiments, a connection hole 45 of a connection terminal is further provided at a cross-sectional position of one end of the substrate 41 in the height direction for connecting the connection terminal to be connected in series-parallel with other large-capacity batteries.

The utility model provides a utmost point post has set up the fin of heat dissipation usefulness and has set up the baffle along the fin, has improved the heat dissipation and the current-carrying area of utmost point post greatly, makes the heat that the utmost point post was accumulated in time disperse, simple structure, practicality are strong, and the electricity core is installed conveniently, and is with low costs.

Example 2

As shown in fig. 3 and 4, an internal structure of a high-capacity battery includes a plurality of battery cells 100, a temperature control unit 200, an explosion venting assembly 500, a pole 400, and a battery can 600. The temperature control system is arranged on the cover plate 61 of the battery, and the explosion venting assembly 500 is fixedly connected with the battery cell 100, passes through the cover plate 61 and is convexly arranged on the cover plate 61. The temperature control system 200 includes a heat pipe 221, and the heat pipe 221 is bent from the cover 61 to extend into the battery case 600 and is fixedly connected with the heat pipe fixing groove 44 on the pole 400.

The above summary of the present application is not intended to describe each disclosed embodiment or every implementation of the present application. The following description more particularly exemplifies illustrative embodiments. Guidance is provided throughout this application by a series of embodiments, which may be used in various combinations. In the various examples, the list is merely a representative group and should not be construed as exhaustive.

Claims

1. The battery pole is arranged in a high-capacity battery shell and is characterized in that the pole is respectively provided with a substrate, a plurality of fins and a baffle plate, one end of each fin is convexly arranged on the substrate, the baffle plate is fixedly connected with the other end of each fin, and the substrate, the fins and the baffle plate form a plurality of heat dissipation channels.

2. The pole of claim 1, wherein the pole is provided with a heat pipe fixing groove along a length direction of the substrate.

3. The pole of claim 1, wherein the heat dissipation channels extend in parallel along the length of the substrate.

4. The pole of claim 1, wherein the shield is arcuate.

5. The pole of claim 1 wherein the pole comprises a first region, a second region, and a third region, the width of the fins in the first region and the third region being less than the width of the fins in the second region.

6. The pole of claim 5 wherein the width of the fins of the first region proximate the second region is greater than the width of the fins of the first region distal the second region; the width of the fin, which is close to the second area, of the third area is higher than the width of the fin, which is far away from the second area, of the third area; the width of the fins of the second region near the first region and the third region is lower than the width of the fins in the middle of the second region.

7. The high-capacity battery is characterized by comprising a battery cell, a shell and the pole post according to any one of claims 1-6, wherein the battery cells are stacked along the length direction of the shell in the thickness direction, the pole post is arranged on two sides of the stacked battery cells and extends along the stacking direction of the battery cells; the fins are fixedly arranged on one surface of the substrate, which is opposite to the battery cell, and the battery cell is electrically connected to the substrate.

8. The high capacity battery as recited in claim 7, wherein a plurality of said channels of said post are filled with a heat absorbing material.

9. The high capacity battery of claim 8, wherein said heat sink material is a phase change material.