CN214706165U - Module connection structure and battery package - Google Patents

Abstract

The utility model relates to a battery technology field especially relates to a module connection structure and battery package. The module connection structure includes: the glue bearing box is used for connecting the adjacent modules; the mica isolation plate comprises a first isolation plate and a second isolation plate, the first isolation plate extends into the glue bearing box to divide the space in the glue bearing box into independent isolation chambers, the bottom wall of the second isolation plate is abutted against the top of the glue bearing box, the second isolation plate covers the module to be connected, and the second isolation plate is provided with a glue injection hole; and the gel block is formed by injecting gel through the gel injection hole on the second partition plate. The utility model discloses in the module connection structure who provides, it is made by mica to hold gluey box, and mica is high temperature resistant material, so hold gluey box can insulate against heat, can not punctured by electric arc after one of them module electric out of control, so hold gluey box high pressure resistant and be difficult for appearing damaging by the air current impact. The gel block can block the ejection of air flow, so that thermal runaway is properly delayed, and time is provided for avoiding risks.

Description

Module connection structure and battery package

Technical Field

The utility model relates to a battery technology field especially relates to a module connection structure and battery package.

Background

The battery package includes the box and is located a plurality of battery module in the box. With the rapid development of new energy automobiles, people pursue the whole automobile power more and more, the energy density of a battery system is gradually meeting the requirements of people, however, with the increase of the quantity of electric vehicles in the market, the case of out-of-control ignition is frequently reported. How to make a protection design of a battery pack and protect member safety is a primary task in the development of the current electric vehicle.

Present battery package design is very limited to the means that prevents the thermal diffusion between the module of inside, but sets up fire-retardant layer or heat dissipation layer usually between electric core, though the thermal runaway risk of single module can be postponed in above-mentioned setting, nevertheless to taking place thermal runaway back high pressure arcing between the module can puncture adjacent module, does not have suitable thermal runaway protection barrier of delaying between the module and can cause the time of taking away the risk not enough, takes place serious consequence.

Therefore, a module connecting structure is needed to solve the above-mentioned technical problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a module connection structure can prevent to be punctured by the high-pressure arc of drawing to the dangerous time is kept away in the extension.

To achieve the purpose, the utility model adopts the following technical proposal:

provided is a module connecting structure including:

the glue bearing box is used for connecting the adjacent modules;

the mica isolation plate comprises a first isolation plate and a second isolation plate, the first isolation plate extends into the glue bearing box to divide the space in the glue bearing box into independent isolation chambers, the bottom wall of the second isolation plate is abutted against the top of the glue bearing box, the second isolation plate covers the module to be connected, and a glue injection hole is formed in the second isolation plate;

and the gel block is formed by injecting gel into the gel bearing box through the gel injection hole on the second partition plate.

As a preferable technical solution of the above module connecting structure, the first partition and the second partition are vertically disposed.

As a preferable technical solution of the above module connecting structure, the mica partition board is of an integral structure.

As a preferable technical solution of the above module connecting structure, the mica isolating plate is a split structure.

As an optimal technical scheme of the module connecting structure, the isolation chambers are arranged in one-to-one correspondence with the glue injection holes.

As an optimal technical scheme of the module connecting structure, the glue bearing box and the side wall adjacent to the module are provided with connecting grooves.

As a preferable technical solution of the above module connecting structure, the connecting grooves are provided in pairs, and two of the connecting grooves in pairs are located on opposite sides of the second partition plate.

The utility model also provides a battery pack, it includes two at least modules, still includes as above module connection structure, module connection structure connects the module.

As an optimal technical scheme of the above battery pack, the modules are arranged in pairs, two paired modules are located on two opposite sides of the second partition plate, two adjacent modules are electrically connected through a copper bar, the side wall of the glue bearing box adjacent to the modules is provided with a connecting groove, and part of the copper bar penetrates into the connecting groove to be arranged in the glue bearing box.

As a preferable technical solution of the above battery pack, the module connecting structure is located at a corner of the module.

The utility model discloses beneficial effect:

the utility model discloses in the module connection structure who provides, it is made by mica to hold gluey box, and mica is high temperature resistant material, so hold gluey box can insulate against heat, can not punctured by electric arc after one of them module electric out of control, so hold gluey box high pressure resistant and be difficult for appearing damaging by the air current impact. The gel block is used for protecting the copper bars, and in the environment of high temperature out of control and full of melt-blown objects, if only air exists between the copper bars, a large amount of charged metal fragments can be mixed in the air, so that discharge and arc discharge between the copper bars are easily caused.

Drawings

Fig. 1 is a schematic structural diagram of module connection of a battery pack according to an embodiment of the present invention;

fig. 2 is an exploded view of a module connecting structure according to an embodiment of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

fig. 4 is a sectional view of a module connecting structure after module connection according to an embodiment of the present invention;

fig. 5 is an exploded view of a module connection structure according to an embodiment of the present invention.

In the figure:

1. a glue bearing box; 11. connecting grooves;

2. a mica separator plate; 21. a first separator; 22. a second separator; 221. injecting glue holes;

3. a module;

4. copper bars.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

The utility model discloses in provide a battery package, as shown in fig. 1 and fig. 2, this battery package includes module connection structure and two at least modules 3, and module connection structure connects adjacent module 3. This battery package passes through module connection structure connection module 3, can be in one of them module 3 thermal runaway back, and module connection structure prevents to be struck by high pressure and punctures to the extension keeps away the dangerous time. This module connection structure can prevent that one of them module 3 thermal runaway back high-pressure arc discharge from puncturing adjacent module 3, can postpone the thermal runaway, provides certain time for keeping away the danger.

In this embodiment, the modules 3 are arranged in pairs, two modules 3 in a pair are located on two opposite sides of the second partition 22, two adjacent modules 3 are connected by the copper bar 4, and a part of the copper bar 4 penetrates into the connecting groove 11 to be placed in the glue bearing box 1. Copper bar 4 is after the gel is injected, immerses in the gel to condense back and gel at the gel and condense as an organic whole, copper bar 4 condenses with the gel piece for whole promptly, thereby realizes that module connection structure connects module 3. Preferably, in this embodiment, the module connecting structure is located at a corner of the module 3. This kind of setting mode can realize connecting four module 3 simultaneously.

As shown in fig. 3-5, the module connecting structure includes a glue bearing box 1, a mica isolation plate 2 and a gel block, wherein the glue bearing box 1 is used for connecting adjacent modules 3; the mica isolation plate 2 comprises a first isolation plate 21 and a second isolation plate 22, the first isolation plate 21 extends into the glue bearing box 1 to divide the space in the glue bearing box 1 into independent isolation chambers, the bottom wall of the second isolation plate 22 is abutted against the top of the glue bearing box 1, the second isolation plate 22 covers the module 3 to be connected, and the second isolation plate 22 is provided with a glue injection hole 221; the gel block is formed by injecting gel into the gel receiving box 1 through the gel injection hole 221 of the second partition plate 22.

In the module connection structure provided in this embodiment, the glue bearing box 1 is made of mica, and the mica is a high temperature resistant material, so the glue bearing box 1 can insulate heat, and the electric runaway of one of the modules 3 cannot be punctured by electric arcs, so the glue bearing box 1 is high-voltage resistant and is not easy to be damaged by air flow impact. The gel block is used for protecting the copper bars, and in the environment of high temperature out of control and full of melt-blown objects, if only air exists between the copper bars, a large amount of charged metal fragments can be mixed in the air, so that discharge and arc discharge between the copper bars are easily caused.

Preferably, as shown in fig. 4, in the present embodiment, the first partition plate 21 is disposed perpendicular to the second partition plate 22. Mica division board 2 is the setting of T font promptly, and this kind of setting mode can be convenient for in mica division board 2 penetrates the glue bearing box 1, and first baffle 21 is the same with the length of second baffle 22 to guarantee that mica division board 2 can separate glue bearing box 1 completely, thereby separate glue bearing box 1 module 3 of the relative both sides, prevent that module 3 of arbitrary side from appearing when the electric runaway opposite side module 3 is punctured by high voltage arc.

Preferably, the mica isolation plate 2 is of an integral structure in the embodiment. The structure is convenient to manufacture, the manufacturing steps are few, and the die sinking cost is saved. Of course, in other embodiments, the mica spacer 2 is a split structure.

Preferably, in this embodiment, the isolation chambers are disposed in one-to-one correspondence with the glue injection holes 221. Of course, in other embodiments, the number of the glue injection holes 221 corresponding to each isolation chamber is not limited to one, but the top of each isolation chamber is provided with the glue injection hole 221, so as to ensure that the gel can be injected into each isolation chamber, thereby forming a gel block.

Preferably, in the present embodiment, the side wall of the glue bearing box 1 adjacent to the module 3 is provided with a connecting groove 11 through which the copper bar 4 can penetrate. The arrangement mode is convenient for the glue bearing box 1 to connect the modules 3 positioned at the two opposite sides of the glue bearing box 1 into a whole. And copper bar 4 connects two adjacent modules 3, and copper bar 4 is located module 3's corner to realize the connection to adjacent module 3, two adjacent modules 3 in this embodiment mean lie in and hold gluey box 1 with two modules 3 of one side

It should be noted that, in the present embodiment, the connecting grooves 11 are provided in pairs, and two connecting grooves 11 in a pair are located on opposite sides of the second partition 22. The arrangement is also convenient for the glue bearing box 1 to connect the modules 3 positioned at the two opposite sides of the glue bearing box 1 into a whole.

In addition, the foregoing is only the preferred embodiment of the present invention and the technical principles applied thereto. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

Claims (10)

1. A module connecting structure, comprising:

the glue bearing box (1) is used for connecting the adjacent modules (3);

the mica isolation plate (2) comprises a first isolation plate (21) and a second isolation plate (22), the first isolation plate (21) extends into the glue bearing box (1) to separate the space in the glue bearing box (1) into independent isolation chambers, the bottom wall of the second isolation plate (22) is abutted to the top of the glue bearing box (1), the second isolation plate (22) covers the module (3) to be connected, and a glue injection hole (221) is formed in the second isolation plate (22);

and the gel block is formed by injecting gel into the gel bearing box (1) through a gel injection hole (221) on the second partition plate (22).

2. The module connecting structure according to claim 1, wherein the first partition (21) is disposed perpendicular to the second partition (22).

3. The module connecting structure according to claim 2, wherein the mica spacer plate (2) is a one-piece structure.

4. The module connecting structure according to claim 2, wherein the mica spacer plate (2) is a split structure.

5. The module connecting structure according to claim 1, wherein the isolation chambers are disposed in one-to-one correspondence with the glue injection holes (221).

6. The module connecting structure according to claim 1, wherein the side wall of the glue bearing box (1) adjacent to the module (3) is provided with a connecting groove (11).

7. Module connecting structure according to claim 6, wherein the connecting slots (11) are arranged in pairs, two connecting slots (11) of a pair being located on opposite sides of the second partition (22).

8. A battery pack comprising at least two modules (3), characterized by further comprising a module connecting structure according to any one of claims 1-7, said module connecting structure connecting said modules (3).

9. The battery pack according to claim 8, wherein the module groups (3) are arranged in pairs, two module groups (3) in a pair are located on opposite sides of the second partition (22), two adjacent module groups (3) are electrically connected through a copper bar (4), a connecting groove (11) is provided on a side wall of the glue bearing box (1) adjacent to the module group (3), and a part of the copper bar (4) penetrates into the connecting groove (11) to be placed in the glue bearing box (1).

10. A battery pack according to claim 9, wherein the module connecting structure is located at a corner of the module (3).

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