[1]
[Technical field]
[2]
This application relates to the field of battery technology, in particular to a battery casing and secondary battery.
[3]
[Background technology]
[4]
The secondary battery is also known as a rechargeable battery or a storage battery, means in the battery discharge after charging manner by activation of the active material to continue to use the battery.
[5]
The secondary battery has a high energy density, high power density, recycled many times, long storage time and the like, mobile telephone, digital camera and a portable computer or other portable electronic device has been widely used, and in the electric car, electric bicycle or other electric vehicles and energy storage facilities and medium-sized electric apparatus have a wide range of application prospect.
[6]
In the prior art, the secondary battery when in use, battery case will form the gas, along with the increase of the gas, the pressure of the battery case will increase, when the battery within the housing when the pressure reaches a certain value, the pressure of the battery case will be too big and a roar, the emergence of a directivity of the burst, the burst may occur after the battery case of the phenomenon of blow, out of the battery case of the debris is the anode and the cathode of the short circuit caused by the lap joint, impact on the safety of the life of the battery.
[7]
[Utility model content]
[8]
In view of this, the embodiment provides a battery casing and secondary battery, in order to relieve the existing technology in the lowland technical problems of battery safety.
[9]
The present invention provides a battery including:
[10]
The shell, the shell is provided with 1st 2nd nicks and scratches;
[11]
Wherein the notch and the notch 1st 2nd arc shape, and the notch 1st 2nd intersects with the notch.
[12]
Further, the housing includes an outer surface;
[13]
The nicks and the 1st 2nd nicks are both arranged in the outer surface.
[14]
Further, the housing includes an inner surface;
[15]
The shell width direction along the W and by the outer surface to the inner surface of the direction, the width of the said 1st notch is gradually reduced;
[16]
The shell width direction along the W and by the outer surface to the inner surface of the direction, the width of the 2nd notch is gradually reduced.
[17]
Further, the shell along the width direction W, the end of the shell comprises a side plate;
[18]
The nicks and the 1st 2nd nicks are both arranged in the side plate.
[19]
Further, the scoring of the 1st 2nd notch depth and the depth of the housing is the wall thickness of the 2/3 - 4/5.
[20]
Further, the indentation and the 1st 2nd notch circumscribed is set.
[21]
Further, the scoring of the 1st and the 2nd notch width the width of not less than 1 mm.
[22]
Further, along the height of the shell in the direction of the H, said 1st notch at the top end of the distance to the top of the shell of not less than 2 mm;
[23]
The height of the shell in the direction along the H, said 2nd notch at the top end of the distance to the top of the shell of not less than 2 mm.
[24]
Further, the 1st and 2nd of the notch and the notch are in the shape of semi-circular arc.
[25]
The present invention provides a secondary battery, comprising:
[26]
The electrode assembly;
[27]
The battery case, for accommodating the electrode assembly, and has an opening;
[28]
The top cover assembly, covering the opening is set.
[29]
The present invention provides the technical scheme can achieve the following beneficial effects:
[30]
The present invention provides a battery including: the shell, the shell is provided with nicks and 1st 2nd notch; wherein 1st nicks and 2nd notch arc shape, and the indentation with the 1st 2nd imprint is crossed. 1st nicks and 2nd imprint in the process of opening, nicks and 1st 2nd notch tear, nicks and 2nd 1st housing along the traces of the intersection of the notch from the two sides towards the side opening, the shell of the immediate tearing shape, ensure that there is sufficient blasting area, and the gas can be rapidly discharged, and still attached to the open portion of the shell, the shell will not be due to flying debris so as to overlap the short circuit caused by the anode and the cathode, to a great extent improves the safety of the secondary battery.
[31]
It should be understood that, the above general description of the details of the latter article and described is only illustrative, not limiting the invention.
[32]
[Attached drawing Figure]
[33]
In order to explain more clearly the application technical scheme of the embodiment, the lower will be the need to use in the embodiment of Figure as a brief account of, it is obvious that, in the description below of Figure is only some embodiments of the invention, the ordinary skill in the art is concerned, in the creative work of the premise of pay, can also be on the basis of these with photos obtain other with photos.
[34]
Figure 1 is the structure diagram of the application of the embodiment of the battery case;
[35]
Figure 2 is the enlarged view of a part in Figure 1;
[36]
Figure 3 is the side view of the application of the embodiment of the battery case;
[37]
Figure 4 Figure 3 to A - A in cutaway view;
[38]
Figure 5 is the enlarged view of b part in Figure 4;
[39]
Figure 6 is the exploded view of the application of the embodiment of the secondary battery.
[40]
The Figure mark:
[41]
1 - Housing;
[42]
11 - Side plate;
[43]
111 - 1St notch;
[44]
112 - 2Nd notch;
[45]
12 - The outer surface;
[46]
13 - The inner surface;
[47]
2 - Top cover assembly;
[48]
21 - The explosion-proof valve of the top cover;
[49]
22 - Slices;
[50]
23 - Pole;
[51]
24 - The top cover sheet;
[52]
3 - Electrode assembly;
[53]
4 - Insulating sleeve.
[54]
[Embodiment]
[55]
In order to better understand the technical proposal of this application, the Figure below to apply for the embodiment of the detailed description.
[56]
It should be made clear, the embodiment described is only the application portion of the embodiment, but not all of the embodiments. Based on the application of the embodiment, the common technical personnel in the field has not made the creative work obtained under the premise of all other embodiment, is within the scope of the applications for the protection.
[57]
In this application the terminology used in the embodiment is only for the purpose of describing the particular embodiment, and not intended to limit the invention. In the invention embodiment and the attached claims used in the singular form of "a", "the" and "the" is also intended to include most forms of, unless the context clearly said other meaning.
[58]
It should be understood, in this text the term "and/or" is only a description related object correlation, that there are three relations can be, for example, A and/or B, can be expressed: exist independently A, exist at the same time A and B, exist in…