CN204885250U - Accumulator - Google Patents

Abstract

The utility model discloses an accumulator, including shell and the apron of setting in the shell upper end, be equipped with at least a set of anodal binding post and negative pole binding post on the apron, wherein the shell has five terminal surfaces, is bottom surface and two sets of side respectively, and wherein a set of side is the rectangle structure, and a set of side all forms to the shell sunken concave structures in inside in addition. Through concave structures, make the battery in the use, avoid the utmost point to organize middle part overexpanision, improve the uniformity that each position of electrode changes, effectively reduce the internal resistance that the battery used the later stage, improve battery life, simultaneously, after the group battery combination, make by concave structures and form heat dissipation channel between the battery, can effectively reduce the temperature in the middle of the battery, improve the inside temperature uniformity of battery, can improve the life of battery equally. Concave structures can form simple process, convenient in the battery case forming process or among the battery preparation process.

Description

A kind of storage battery

Technical field

The utility model relates to a kind of storage battery, especially a kind of storage battery with concave structure.

Background technology

The development of new-energy automobile has driven the fast development of electrokinetic cell.The shape of electrokinetic cell has cylindrical, square, aluminum plastic film Soft Roll shape usually.Degree that cylindrical battery is withstand voltage is high, flexible-packed battery not compression resistance.Rectangular cell is withstand voltage, and degree is lower.Rectangular cell adopts plastics or metal material as battery case usually, but electrokinetic cell in use, due to heat, the many factors such as side reaction, inside can produce certain pressure, cause cell expansion, in cyclic process also can there is expansion to a certain degree in electrode, the rock deformation pressure that can bear due to each position of rectangular cell shell is different, make more easily to expand in the middle of battery, thus make battery middle part inside dimension large, space is provided to the distortion etc. of pole group, make electrode each position extent of reaction, the differences such as internal resistance strengthen, affect the useful life of battery.

Battery, normally when battery combination is applied, is fixed up with clamping plate, fixture etc. by the means of current employing, reduces the excessive expansion in battery use procedure.But during composition battery pack, the resistance to bulbs of pressure that in battery pack, the battery of diverse location bears are different, make the difference of battery pack in application process between each battery strengthen gradually, affect battery with two side terminals, thus affect the useful life of battery pack.

In battery applications process, heat in the middle of battery more easily accumulates, usual way is again in battery combination process, by forming heat dissipation channel between battery case or battery, battery is lowered the temperature, but such method makes battery each position radiating effect consistent, the temperature of battery self can not be made consistent, the inconsistency of inside battery can be strengthened equally.

Therefore, utility model people of the present utility model needs a kind of new technology of design badly to improve its problem.

Utility model content

The utility model aims to provide a kind of storage battery, and it effectively can improve useful life and the fail safe of batteries.

For solving the problems of the technologies described above, the technical solution of the utility model is:

A kind of storage battery, comprise shell and the cover plate being arranged on described shell upper end, described cover plate is provided with at least one group of positive terminal and negative terminal, wherein said shell has five end faces, be respectively bottom surface and two groups of sides, wherein one group of side is rectangular configuration, and other one group of side all forms the concave structure to shell inner recess, and described cover plate and described shell match.

Preferably, concave structure described in each all runs through the whole side at its place, and the concave structure being positioned at two sides of described shell is mutually symmetrical, the concave structure of this symmetry is double curve structure, the bottom surface of described shell is mated with this concave structure, and the concave structure of described cover plate and described shell matches.

Preferably, concave structure described in each is all arranged on the middle part of the side at its place.

Preferably, the hyperbola formula of described concave structure is:

$\frac{x^2}{4}-\frac{y^2}{9}=1,$

There is the axis of two sides of rectangular configuration for x-axis in this formula, there is the axis of two sides of concave structure for y-axis.

Preferably, described shell is prepared from by plastic material.

Preferably, described shell is prepared from by metal material.

Preferably, described cover plate is prepared from by plastics or metal material.

Adopt technique scheme, the utility model at least comprises following beneficial effect:

Storage battery described in the utility model, by in battery cell case forming process, making in the middle part of battery cell case along pole group thickness direction is concave structure, make battery in use, avoid pole group middle part excessive expansion, improve the consistency of electrode each position change, effectively reduce the internal resistance that battery uses the later stage, improve battery; Meanwhile, when after battery combination, made to form heat dissipation channel between battery by concave structure, effectively can reduce the temperature in the middle of battery, improve the temperature consistency of inside battery, the useful life of battery can be improved equally, avoid the potential safety hazard because inside battery heat accumulation causes.Concave structure can be formed in battery case forming process or in cell making process process, and technique is simple, convenient, is particularly useful for all kinds of prismatic cells such as hydrogen nickel, lithium ion.

Accompanying drawing explanation

Fig. 1 is the structural representation of storage battery described in the utility model;

Fig. 2 is the concave structure schematic diagram of storage battery described in an embodiment;

Fig. 3 is the structural representation after the Combined storage battery described in Fig. 2;

Fig. 4 is the structural representation of storage battery described in another embodiment.

Wherein: 1. shell, 2. cover plate, 3. positive terminal, 4. negative terminal, 5. concave structure, 6. heat dissipation channel.

Embodiment

Below in conjunction with drawings and Examples, the utility model is further illustrated.

As shown in Figures 1 to 4, for meeting a kind of storage battery of the present utility model, comprise shell 1 and the cover plate 2 being arranged on described shell 1 upper end, described cover plate 2 is provided with at least one group of positive terminal 3 and negative terminal 4, wherein said shell 1 has five end faces, and be respectively bottom surface and two groups of sides, wherein one group of side is rectangular configuration, other one group of side all forms the concave structure 5 to shell 1 inner recess, and described cover plate 2 matches with described shell 1.

In a preferred embodiment, as shown in Figure 2, concave structure 5 described in each all runs through the whole side at its place, and the concave structure 5 being positioned at two sides of described shell 1 is mutually symmetrical, the concave structure 5 of this symmetry is double curve structure, the bottom surface of described shell 1 is mated with this concave structure 5, and described cover plate 2 matches with the concave structure 5 of described shell 1.

Because the concave structure 5 on battery cell case 1 makes inside battery bulk reduce, the bulk after reduction is not less than the size of battery pack, avoids the assembling difficulty of battery pole group.As shown in Figure 3, the concave structure 5 that storage battery is formed, can self-assembling formation heat dissipation channel 6 after the assembling of multiple battery, carries out efficiently radiates heat, improve useful life and the fail safe of batteries in the middle part of the storage battery easily occurring high temperature.

Preferably, the hyperbola formula of described concave structure 5 is:

$\frac{x^2}{4}-\frac{y^2}{9}=1,$

There is the axis of two sides of rectangular configuration for x-axis in this formula, there is the axis of two sides of concave structure 5 for y-axis.The storage battery model mainly for more current routines of selecting of this formula designs, and the storage battery those skilled in the art for other models completely can adjust accordingly according to the user demand of reality and change, and the present embodiment does not limit this.

In an additional preferred embodiment, as shown in Figure 4, described in each, concave structure 5 is all arranged on the middle part of the side at its place.Its preparation technology is: after storage battery completes assembling, and in pole, group thickness direction is squeezed into spill by the middle part of battery cell case 1, and the minimum spatial dimension due to the internal storage battery extruding rear formation is less than the size of accumulator pole group.Therefore it can avoid pole group middle part excessive expansion, improve the consistency of electrode each position change, effectively reduce the internal resistance that battery uses the later stage, improve battery.

Preferably, described shell 1 is prepared from by plastic material.

Preferably, described shell 1 is prepared from by metal material.

Preferably, described cover plate 2 is prepared from by plastics or metal material.

Storage battery described in the utility model, by in battery cell case 1 forming process, making in the middle part of battery cell case 1 along pole group thickness direction is concave structure 5, make battery in use, avoid pole group middle part excessive expansion, improve the consistency of electrode each position change, effectively reduce the internal resistance that battery uses the later stage, improve battery; Simultaneously, when after battery combination, the concave structure 5 with hyperbolic configuration makes to form heat dissipation channel 6 between battery, effectively can reduce the temperature in the middle of battery, improve the temperature consistency of inside battery, the useful life of battery can be improved equally, avoid the potential safety hazard because inside battery heat accumulation causes.Concave structure 5 can be formed in battery case 1 forming process or in cell making process process, and technique is simple, convenient, is particularly useful for all kinds of prismatic cells such as hydrogen nickel, lithium ion.

Above embodiment of the present utility model has been described in detail, but described content is only the preferred embodiment that the utility model is created, and can not be considered to for limiting practical range of the present utility model.All any equivalent variations done according to the utility model application range, all should still be within patent covering scope of the present utility model.

Claims (7)

1. a storage battery, it is characterized in that: comprise shell and the cover plate being arranged on described shell upper end, described cover plate is provided with at least one group of positive terminal and negative terminal, wherein said shell has five end faces, be respectively bottom surface and two groups of sides, wherein one group of side is rectangular configuration, and other one group of side all forms the concave structure to shell inner recess, and described cover plate and described shell match.

2. storage battery as claimed in claim 1, it is characterized in that: concave structure described in each all runs through the whole side at its place, and the concave structure being positioned at two sides of described shell is mutually symmetrical, the concave structure of this symmetry is double curve structure, the bottom surface of described shell is mated with this concave structure, and the concave structure of described cover plate and described shell matches.

3. storage battery as claimed in claim 1, is characterized in that: concave structure described in each is all arranged on the middle part of the side at its place.

4. storage battery as claimed in claim 2, is characterized in that: the hyperbola formula of described concave structure is:

$\frac{x^2}{4}-\frac{y^2}{9}=1,$

There is the axis of two sides of rectangular configuration for x-axis in this formula, there is the axis of two sides of concave structure for y-axis.

5. as right wants the storage battery as described in 4, it is characterized in that: described shell is prepared from by plastic material.

6. storage battery as claimed in claim 5, is characterized in that: described shell is prepared from by metal material.

7. the storage battery as described in as arbitrary in claim 1-6, is characterized in that: described cover plate is prepared from by plastics or metal material.