CN210576090U

CN210576090U - Battery shell and battery

Info

Publication number: CN210576090U
Application number: CN201921496750.7U
Authority: CN
Inventors: 赖信华; 野德柱; 高峰
Original assignee: Chengdu Yinlong New Energy Industry Technology Research Co ltd; Yinlong New Energy Co Ltd
Current assignee: Chengdu Yinlong New Energy Industry Technology Research Co ltd; Yinlong New Energy Co Ltd
Priority date: 2019-09-09
Filing date: 2019-09-09
Publication date: 2020-05-19
Anticipated expiration: 2029-09-09

Abstract

A battery shell and a battery relate to the field of new energy. Wherein, battery case includes anodal apron, negative pole apron and casing, and anodal apron sets up the one end at the casing, and the negative pole apron sets up the other end at the casing, and anodal apron, negative pole apron and casing form annotate the liquid cavity, and one side that the casing is close to annotating the liquid cavity is provided with the guiding gutter, guiding gutter and annotate liquid cavity intercommunication. The utility model discloses in, be provided with the guiding gutter on one side that the casing is close to in the notes liquid cavity, the guiding gutter with annotate liquid cavity intercommunication, after the electrolyte holding is in annotating the liquid cavity, electrolyte can flow in annotating liquid cavity and guiding gutter, increased the accommodation space of electrolyte with the guiding gutter of annotating liquid cavity intercommunication, and how much direct influence of electrolyte the cycle number of times and the infiltration effect of battery to the circulation performance and the infiltration effect of battery have been improved.

Description

Battery shell and battery

Technical Field

The utility model relates to a new forms of energy field particularly, relates to a battery case and battery.

Background

In the field of lithium titanate batteries, the battery can consume electrolyte in the charging and discharging processes, and the cycle number of the battery is directly influenced by the amount of the electrolyte; the infiltration effect of the battery can cause the diaphragm and the pole piece to be seriously damaged if the battery cannot be infiltrated fully before activation, and the diaphragm is directly damaged to influence the performance of the battery. The content of electrolyte of the current battery in the prior art is very small.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a battery case and battery, its cycling performance and the infiltration effect that can improve the battery.

The embodiment of the utility model is realized like this:

in a first aspect, an embodiment of the present invention provides a battery case, including: anodal apron, negative pole apron and casing, anodal apron sets up the one end of casing, the negative pole apron sets up the other end of casing, anodal apron negative pole apron reaches the casing forms annotates the liquid cavity, the casing is close to one side of annotating the liquid cavity is provided with the guiding gutter, the guiding gutter with annotate liquid cavity intercommunication.

In an alternative embodiment, the guide groove extends in the direction of extension of the housing.

In an alternative embodiment, a reinforcing portion is provided protruding from the housing, and the reinforcing portion extends in the extending direction of the housing.

In an alternative embodiment, the channels extend from the housing to the reinforcement.

In an alternative embodiment, the cross-section of the reinforcement is arcuate.

In an optional embodiment, a liquid injection hole is formed in the positive cover plate, and the liquid injection hole is communicated with the liquid injection cavity.

In a second aspect, an embodiment of the present invention provides a battery, including a battery anode, a battery cathode and the battery casing as in any one of the previous embodiments, wherein the battery anode and the battery cathode are mounted on the anode cover plate.

In an optional embodiment, the positive cover plate is provided with an installation groove, and the battery positive electrode and the battery negative electrode are arranged on the bottom wall of the installation groove.

In an alternative embodiment, an insulating layer is disposed between the battery positive electrode and the battery negative electrode.

In an alternative embodiment, the battery positive electrode is welded to the battery negative electrode.

The embodiment of the utility model provides a beneficial effect is: the battery shell comprises an anode cover plate, a cathode cover plate and a shell, wherein the anode cover plate is arranged at one end of the shell, the cathode cover plate is arranged at the other end of the shell, the anode cover plate, the cathode cover plate and the shell form a liquid injection cavity, one side of the shell, which is close to the liquid injection cavity, is provided with a diversion trench, and the diversion trench is communicated with the liquid injection cavity.

The utility model discloses in, be provided with the guiding gutter on one side that the casing is close to in the notes liquid cavity, the guiding gutter with annotate liquid cavity intercommunication, after the electrolyte holding is in annotating the liquid cavity, electrolyte can flow in annotating liquid cavity and guiding gutter, increased the accommodation space of electrolyte with the guiding gutter of annotating liquid cavity intercommunication, and how much direct influence of electrolyte the cycle number of times and the infiltration effect of battery to the circulation performance and the infiltration effect of battery have been improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a battery case according to a first viewing angle according to a first embodiment of the present invention;

fig. 2 is a schematic structural diagram of a battery case according to a second embodiment of the present invention;

fig. 3 is a schematic structural diagram of a battery according to a third embodiment of the present invention.

10-battery; 100-a battery housing; 110-positive electrode cover plate; 120-negative electrode cover plate; 130-a housing; 140-a liquid injection cavity; 150-a diversion trench; 160-a reinforcement; 170-liquid injection hole; 200-a battery positive electrode; 300-battery negative electrode.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

First embodiment

Referring to fig. 1 and fig. 2, the present embodiment provides a battery case 100, and the battery case 100 provided by the present embodiment can improve the cycle performance and the wetting effect of the battery.

In the present embodiment, the battery case 100 includes: the liquid injection device comprises a positive cover plate 110, a negative cover plate 120 and a shell 130, wherein the positive cover plate 110 is arranged at one end of the shell 130, the negative cover plate 120 is arranged at the other end of the shell 130, the positive cover plate 110, the negative cover plate 120 and the shell 130 form a liquid injection cavity 140, a diversion trench 150 is arranged on one side, close to the liquid injection cavity 140, of the shell 130, and the diversion trench 150 is communicated with the liquid injection cavity 140.

In this embodiment, a flow guide groove 150 is disposed on one side of the casing 130 close to the liquid injection cavity 140, the flow guide groove 150 is communicated with the liquid injection cavity 140, when the electrolyte is accommodated in the liquid injection cavity 140, the electrolyte can flow in the liquid injection cavity 140 and the flow guide groove 150, the flow guide groove 150 communicated with the liquid injection cavity 140 increases the accommodating space of the electrolyte, and the circulation frequency and the infiltration effect of the battery are directly affected by the amount of the electrolyte, so that the circulation performance and the infiltration effect of the battery are improved.

In the present embodiment, the guide groove 150 extends in the extending direction of the housing 130. The length of the guide groove 150 can be increased, so that the accommodating space of the whole electrolyte is increased, and the capacity of the electrolyte is improved.

It should be noted that, in this embodiment, the diversion trench 150 extends along the extending direction of the casing 130, but is not limited thereto, in other embodiments of the present invention, the diversion trench 150 may also extend along the radial direction of the casing 130, and with the solution equivalent to this embodiment, the effect of this embodiment can be achieved, all being within the protection scope of the present invention.

In this embodiment, the case 130 is provided with the reinforcing portion 160 protruding upward, and the reinforcing portion 160 extends in the extending direction of the case 130.

In the present embodiment, the reinforcing part 160 provided along the extending direction of the case 130 can reinforce the lateral force of the battery case 100, improving the strength of the battery case 100.

In the present embodiment, the guide groove 150 extends from the housing 130 to the reinforcement portion 160. The area of the guide groove 150 can be increased, thereby increasing the capacity of the electrolyte.

In the present embodiment, the cross-section of the reinforcing part 160 is arc-shaped.

It should be noted that, in this embodiment, the cross section of the reinforcing portion 160 is an arc, but is not limited thereto, in other embodiments of the present invention, the cross section of the reinforcing portion 160 may be another shape such as a rectangle, and the same solution as this embodiment can achieve the effect of this embodiment, all within the protection scope of the present invention.

In the present embodiment, the reinforcing part 160 is provided in plurality, the reinforcing parts 160 are uniformly disposed on the case 130, and the reinforcing parts 160 enhance the lateral force of the case 130, thereby improving the strength of the battery case 100.

In the present embodiment, there are a plurality of flow guide grooves 150, and the plurality of flow guide grooves 150 and the plurality of reinforcing portions 160 are disposed in a one-to-one correspondence.

In the present embodiment, the positive electrode cover plate 110 is provided with a liquid injection hole 170 (see fig. 3), and the liquid injection hole 170 is communicated with the liquid injection cavity 140. The liquid injection hole 170 communicates with the liquid injection cavity 140, and the electrolyte is injected into the liquid injection cavity 140 from the liquid injection hole 170.

The working principle of the battery case 100 provided by the embodiment is as follows: in the present embodiment, the guiding groove 150 is communicated with the injection cavity 140 and extends to the reinforcing portion 160, and the plurality of reinforcing portions 160 are uniformly arranged around the housing 130.

In summary, in the battery case 100 provided in this embodiment, the diversion trench 150 is disposed on one side of the casing 130 close to the liquid injection cavity 140, the diversion trench 150 is communicated with the liquid injection cavity 140, after the electrolyte is accommodated in the liquid injection cavity 140, the electrolyte can flow in the liquid injection cavity 140 and the diversion trench 150, the diversion trench 150 communicated with the liquid injection cavity 140 increases the accommodating space of the electrolyte, and the amount of the electrolyte directly affects the cycle number and the infiltration effect of the battery, thereby improving the cycle performance and the infiltration effect of the battery.

Second embodiment

Referring to fig. 3, the present embodiment provides a battery 10, and the battery 10 provided in the present embodiment can improve the cycle performance and the wetting effect of the battery 10.

For the sake of brevity, reference may be made to embodiment one, where this embodiment is not mentioned.

In the present embodiment, the battery 10 includes a battery positive electrode 200, a battery negative electrode 300, and a battery case 100, and the battery positive electrode 200 and the battery negative electrode 300 are mounted on a positive electrode cover 110.

In the embodiment, the battery positive electrode 200 and the battery negative electrode 300 are both mounted on the positive cover plate 110, so that the number of connecting members between the battery positive electrode 200 and the battery negative electrode 300 is reduced, the connecting space is saved, and the content of the electrolyte can be increased.

In the present embodiment, the positive electrode cover 110 is provided with mounting grooves, and the battery positive electrode 200 and the battery negative electrode 300 are disposed on the bottom walls of the mounting grooves.

In this embodiment, the battery positive electrode 200 and the battery negative electrode 300 are disposed on the bottom wall of the mounting groove, so that the battery positive electrode 200 and the battery negative electrode 300 can be protected, and the damage of impurities to the battery positive electrode 200 and the battery negative electrode 300 is reduced.

In the present embodiment, an insulating layer is provided between the battery positive electrode 200 and the battery negative electrode 300. The internal conduction discharge between the battery positive electrode 200 and the battery negative electrode 300 can be avoided.

In the present embodiment, the battery positive electrode 200 is welded to the battery negative electrode 300. The welding can save the connection space between the battery anode 200 and the battery cathode 300, and improve the capacity of the electrolyte.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. 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. A battery case, comprising: anodal apron, negative pole apron and casing, anodal apron sets up the one end of casing, the negative pole apron sets up the other end of casing, anodal apron negative pole apron reaches the casing forms annotates the liquid cavity, the casing is close to one side of annotating the liquid cavity is provided with the guiding gutter, the guiding gutter with annotate liquid cavity intercommunication.

2. The battery case according to claim 1, wherein the flow guide groove extends in an extending direction of the case.

3. The battery case according to claim 1, wherein a reinforcing portion is provided on the case body in a protruding manner, and the reinforcing portion extends in the extending direction of the case body.

4. The battery case of claim 3, wherein the channels extend from the housing to the reinforcement.

5. The battery case of claim 3, wherein the reinforcement is arcuate in cross-section.

6. The battery case according to claim 1, wherein a liquid injection hole is formed in the positive electrode cover plate, and the liquid injection hole is communicated with the liquid injection cavity.

7. A battery comprising a positive battery electrode, a negative battery electrode, and the battery case according to any one of claims 1 to 6, wherein the positive battery electrode and the negative battery electrode are mounted on the positive electrode lid.

8. The battery of claim 7, wherein the positive cover plate is provided with a mounting groove, and the battery positive electrode and the battery negative electrode are disposed on a bottom wall of the mounting groove.

9. The battery of claim 8, wherein an insulating layer is disposed between the battery positive electrode and the battery negative electrode.

10. The battery of claim 7, wherein the battery positive electrode is welded to the battery negative electrode.