CN217983587U - Module output pole busbar leading-out structure and battery cell module - Google Patents

Abstract

The utility model provides a module output pole busbar extraction structure and electric core module, this extraction structure includes: the end plate, the end plate insulating plate and the output electrode module; the end plate insulating plates and the end plates are sequentially arranged along the arrangement direction of the batteries; the end plate insulating plate is positioned between the end plate and the output end battery; the output pole module is fixed between the end plate and the end plate insulating plate; the output pole module includes: an output electrode, an output electrode bus bar, and an intermediate portion; the output electrode bus bar is a bus bar between the battery at the end part of the battery core module and the output electrode, and the directions of the output electrode bus bar and the bus bar between the batteries in the battery core module are consistent; the plane where the bus bars are located is parallel to the arrangement direction of the batteries in the battery cell module; the plane where the output pole is located is intersected with the plane where the output pole bus bar is located; the output electrode bus bar is electrically connected to the output electrode through the intermediate portion. The utility model discloses, can satisfy simultaneously super hot security performance when filling soon, output utmost point busbar safe effective design.

Description

Module output pole busbar leading-out structure and battery cell module

Technical Field

The utility model relates to a battery technology field especially relates to a module output pole busbar outgoing structure and electric core module.

Background

At present, the appearance types of the battery cell can be divided into a square shell battery cell, a soft package battery cell and a cylindrical battery cell, wherein the application of the square shell battery cell in China is wide. The square shell battery cell can be divided into two types according to the position of the pole: ejecting the pole and laterally ejecting the pole. The scheme of pole ejection is commonly found in domestic mainstream schemes such as VDA modules; the pole side out scheme can be seen in some CTP schemes.

The VDA module in China at present adopts the ejecting scheme of utmost point post, and its module output utmost point busbar orientation is unanimous with utmost point post orientation. However, as the requirements for the charging speed and the safety performance of the power battery of the electric automobile are higher and higher, the increase of the quick charging speed of the battery brings larger heat productivity, and therefore a better cooling system is needed to help the battery to dissipate heat. When the square-shell battery cell pole is ejected, a liquid cooling plate can be designed at the bottom end of the battery cell generally, single-side cooling is arranged, the heat dissipation performance of the scheme is limited, and negative influence is caused on the temperature consistency of the battery cell.

The ejecting problem of existence of above-mentioned utmost point post can be solved to utmost point post side play scheme, but the square shell electricity core module that utmost point post side goes out is comparatively rare because general demand output pole busbar is not in the side, and is inconsistent with utmost point post direction, all needs the adjustment at module length direction and direction of height, design difficulty. Because the busbar is longer, detour from the end plate outside easily produces the safety risk, if the battery package meets extrusion collision, easily produces the short circuit risk. The design of the idea can generate negative influence on the utilization rate of the internal space of the battery pack, and meanwhile, the requirement on the thickness of the end plate is provided.

SUMMERY OF THE UTILITY MODEL

The utility model provides a module output pole busbar lead-out structure and electric core module to thermal safety ability, the problem of output pole busbar safe effective design when can't satisfy super fast filling simultaneously among the solution prior art.

According to the utility model discloses an aspect provides a module output pole busbar outgoing structure, and it includes: the end plate module comprises an end plate, an end plate insulating plate and an output electrode module;

the end plate insulating plates and the end plates are sequentially arranged along the arrangement direction of the batteries in the battery cell module;

the end plate insulating plate is positioned between the end plate and an output end battery, and the output end battery is a battery close to an output electrode in the battery cell module;

the end plate, the end plate insulating plate configured to be capable of securing a portion of an output electrode module between the end plate and the end plate insulating plate;

the output pole module includes: an output electrode, an output electrode bus bar, and an intermediate portion;

the output electrode bus bar is a bus bar between a battery at the end part of the battery core module and the output electrode, and the directions of the output electrode bus bar and the bus bar between the batteries in the battery core module are consistent;

the plane where the bus bars are located is parallel to the arrangement direction of the batteries in the battery cell module;

the plane of the output electrode is intersected with the plane of the output electrode bus bar;

the output pole bus bar is electrically connected to the output pole through the intermediate portion.

Preferably, the end plate insulator plate are configured to be able to clamp the intermediate portion between the end plate and the end plate insulator plate.

Preferably, the plane of the middle part, the plane of the end plate and the plane of the end plate insulating plate are parallel to each other.

Preferably, the plane of the output electrode is perpendicular to the plane of the output electrode bus bar.

Preferably, the plane of the output electrode bus bar and the plane of the middle part are mutually perpendicular in pairs.

Preferably, one side of the end plate close to the end plate insulating plate is provided with a groove;

the recess is configured to receive the intermediate portion.

Preferably, the recess is further configured to receive the output pole.

Preferably, the face of the output pole module in contact with the end plate is covered with an insulating layer.

According to the utility model discloses a second aspect provides an electricity core module, and it includes: at least two batteries, busbars and any one of the module output electrode busbar lead-out structures which are arranged in sequence;

wherein the content of the first and second substances,

two adjacent batteries are electrically connected through the bus bar to realize series connection.

The utility model provides a module output pole busbar lead-out structure and electric core module, draw out the output pole from between end plate insulation board and the end plate, improved the space utilization in the battery package; and the leading-out structure leads the output pole and the bus bar not to be in the same plane, nor in a parallel plane (namely the plane of the output pole is intersected with the plane of the output pole bus bar), so that when the bus bar is positioned on the side surface in order to meet the thermal safety performance during super rapid charging, the leading-out structure can lead the output pole out to the other side (for example, when the output pole is a square battery, the output pole can be led out to the top surface), thereby facilitating the connection of the output pole and other components, and having simple structure and convenient connection.

The utility model provides a module output pole busbar extraction structure and electric core module draws forth the output pole between end plate insulation board and the end plate, and most positions of output pole all lie in between end plate and end plate insulation board, have reduced the output pole and have collided with the external possibility, have improved the high-pressure security performance of electric core module.

The utility model discloses an among the alternative, set up the recess through the one side that is close to the end plate insulation board at the end plate for hold the intermediate part of output pole module, can alleviate the pressure that the output pole module receives, further improved the security performance.

The utility model discloses an among the alternative, through the output utmost point module with the insulating layer of end plate contact's face cladding, can avoid output utmost point module and end plate overlap joint to arouse the electric leakage risk, further improved the security performance.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the description below are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive labor.

Fig. 1 is an exploded view of a module output electrode bus bar lead-out structure according to an embodiment of the present invention;

fig. 2 is a schematic diagram of an output electrode module of a module output electrode bus bar lead-out structure according to an embodiment of the present invention;

fig. 3 is a side view of an output electrode module of a module output electrode bus bar lead-out structure according to an embodiment of the present invention;

fig. 4 is a front view of an output electrode module of a module output electrode bus bar lead-out structure according to an embodiment of the present invention;

fig. 5 is a top view of an output electrode module of a module output electrode bus bar lead-out structure according to an embodiment of the present invention;

fig. 6 is a back view of an output electrode module of a module output electrode bus bar lead-out structure according to an embodiment of the present invention;

fig. 7 is a rear view of an end plate of a module output electrode bus bar lead-out structure according to an embodiment of the present invention;

fig. 8 is a side view of an end plate of a module output pole bus bar extraction structure in accordance with an embodiment of the present invention;

fig. 9 is a front view of an end plate of a module output electrode bus bar lead-out structure according to an embodiment of the present invention;

fig. 10 is a top view of an end plate of a module output pole bus bar extraction structure in accordance with an embodiment of the present invention;

fig. 11 is an exploded view of a cell module according to an embodiment of the present invention;

fig. 12 is a top view of a battery cell module according to an embodiment of the present invention;

fig. 13 is a front view of a battery cell module according to an embodiment of the present invention;

fig. 14 is a side view of a battery cell module according to an embodiment of the present invention;

description of reference numerals:

1-an end plate, wherein the end plate is provided with a plurality of grooves,

11-the grooves are formed in the surface of the glass substrate,

2-the insulating plate of the end plate,

3-the output pole module is used for outputting the voltage,

31-the output pole of the cathode-anode,

32-a bus bar of the output pole,

33-an intermediate portion;

4-a battery, wherein the battery is connected with the power supply,

41-module end cells;

5-bus bar.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be understood that the terms "upper portion", "lower portion", "upper end", "lower surface", "upper surface", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, 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.

In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

In the description of the present invention, "plurality" means a plurality, such as two, three, four, etc., unless specifically limited otherwise.

In the description of the present invention, unless explicitly stated or limited otherwise, the terms "connected" and the like are to be understood broadly, and may for example be fixedly connected, detachably connected, or integrated; can be mechanically connected, electrically connected or can communicate with each other; 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 according to specific situations by those of ordinary skill in the art.

The technical solution of the present invention will be described in detail with specific examples. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments.

In one embodiment, a module output electrode bus bar lead-out structure is provided, which includes: an end plate 1, an end plate insulating plate 2, and an output electrode module 3, please refer to fig. 1. The end plate insulating plates 2 and the end plates 1 are sequentially arranged along the arrangement direction of the batteries in the battery cell module; the end plate insulation board 2 is positioned between the end plate and the output end battery, and the output end battery is a battery close to the output electrode in the battery cell module. The end plate, end plate insulating plate is configured to be able to fix part of the output electrode module between the end plate 1 and the end plate insulating plate 2.

Wherein, the output pole module 3 includes: an output electrode 31, an output electrode bus bar 32, and an intermediate portion 33, please refer to fig. 2, fig. 3, fig. 4, fig. 5, and fig. 6. The output electrode bus bar 32 is a bus bar between the battery at the end part of the battery core module and the output electrode, and the directions of the output electrode bus bar 32 and the bus bar 5 between the batteries in the battery core module are consistent; the plane where the bus bar 5 is located is parallel to the arrangement direction of the batteries 4 in the cell module, that is, the bus bar 5 and the output electrode bus bar 32 are located on the side surface of the cell module, which is a polar side-out scheme, please refer to fig. 11. The plane of the output pole is intersected with the plane of the output pole bus bar, namely the output pole is led out to the other surface and is not positioned on the side surface; the output electrode bus bar 32 is electrically connected to the output electrode 31 via the intermediate portion 33.

The bus bar leading-out structure of the module output pole in the embodiment meets the condition that the output pole is not on the side surface when the pole is laterally led out. The pole side outlet scheme can be set and cooled on two sides, and cooling structures can be simultaneously arranged on the upper side and the lower side of the module for cooling, so that the thermal safety performance of the cell system during super quick charging is improved; simultaneously, the output pole is drawn to the another side, not in the side, has made things convenient for the design of high-pressure copper bar between the module, has improved the space utilization in the electric core module. In addition, the output pole is led out from between end plate insulation board and the end plate, and most parts of the output pole are all located between the end plate and the end plate insulation board, so that the possibility of collision between the output pole and the outside is reduced, and the high-voltage safety performance of the battery cell module is improved.

In one embodiment, the output electrode 31, the output electrode bus bar 32, and the intermediate portion 33 of the output electrode module 3 may be integrally formed, or may be three fixedly connected structures.

In one embodiment, the end plate 1 and the end plate insulating plate 2 are configured to be able to clamp the intermediate portion 33 between the end plate 1 and the end plate insulating plate 2. In the embodiment, the output pole module is fixed in a clamping mode, and in different embodiments, the output pole module can be fixed with the end plate and the end plate insulating plate in a clamping mode or a clamping groove mode.

In one embodiment, for easier fixing, the plane of the middle portion, the plane of the end plate, and the plane of the end plate insulating plate are parallel to each other, please refer to fig. 1.

In one embodiment, the plane of the output electrode is perpendicular to the plane of the output electrode bus, please refer to fig. 3. The output pole module is more regular in shape and can be better suitable for a square battery, so that when the output pole bus bar is positioned on the side surface of the battery cell module, the output pole is just positioned on the top surface of the battery cell module, the appearance is more regular, and the connection is more convenient.

In one embodiment, the plane of the output electrode bus bar, and the plane of the middle portion are perpendicular to each other, as shown in fig. 3. The battery is more suitable for square battery cell modules, the middle part, the end plates and the end plate insulating plates can be consistent with the battery direction, the battery can be better attached, and the structure is more compact and firmer.

In one embodiment, a groove 11 is arranged on one side of the end plate close to the end plate insulating plate; the recess 11 is configured to receive the intermediate portion 33, see fig. 8. Therefore, when the end plate and the end plate insulating plate are clamped tightly, the pressure borne by the output electrode module can be reduced, and the safety performance can be further improved.

In one embodiment, the recess 11 is further configured to accommodate the output electrode 31, please refer to fig. 7, 8, 9, and 10. The output pole 31 is also accommodated in the groove 11, so that the output pole can be flush with the top surface of the end plate, the end plate insulating plate and even the battery, the structure is more regular, and the possibility that the output pole collides with the outside can be further reduced by better protection.

In one embodiment, the face of the output pole module that contacts the end plate is covered with an insulating layer, such as: can be plastics, etc., and the insulating layer can avoid causing the electric leakage risk with the end plate overlap joint, has further improved the security performance.

In another embodiment, a battery cell module is provided, which includes: at least two batteries, a bus bar, an output electrode module, and a module output electrode bus bar lead-out structure according to any of the above embodiments, which are sequentially arranged, please refer to fig. 11, fig. 12, fig. 13, and fig. 14. Wherein, two adjacent batteries 4 are electrically connected through a bus bar 5 to realize series connection; the output pole module includes: an output electrode 31, an output electrode bus bar 32, and an intermediate portion 33; the output electrode bus bar 32 is a bus bar between the module end battery 41 in the cell module and the output electrode, and the directions of the output electrode bus bar 32 and the bus bar 5 are consistent; the plane where the bus bar 5 is located is parallel to the arrangement direction of the batteries 4 in the battery cell module, that is, the bus bar 5 and the output electrode bus bar 32 are located on the side surface of the battery cell module, and the pole is located on the side surface; the plane of the output electrode 31 is intersected with the plane of the output electrode bus bar 32, namely the output electrode is led out to the other surface and is not arranged on the side surface; the output electrode bus bar 32 is electrically connected to the output electrode 31 via the intermediate portion 33.

The utility model discloses a legend all is with square electric core as an example, and when the busbar in the battery was located the electric core side, module output pole busbar lead-out structure can draw out the output pole to the top surface. In different embodiments, the battery core can also be a battery core with other irregular shapes, and for battery core modules with different shapes, the plane where the output electrode is located is intersected with the plane where the output electrode bus bar is located, and the module output electrode bus bar leading-out structure can lead out the output electrode to the other side outside the side surface (the plane where the bus bar is located) of the battery core. Such as: in order to adapt to different placing spaces, the shape of the battery cell can be designed according to the shape of the placing space, such as an irregular polyhedron, a cylinder and the like. Such as: when the electric core is an irregular polyhedron, the output electrode can be led out to one surface (not the side surface) of the polyhedron according to the design requirement, and when the electric core is a cylinder, the output electrode can be led out to the cylindrical surface of the cylinder.

In the description herein, references to the terms "an embodiment," "an example," "a specific implementation," "an example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the example or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims (9)

1. The utility model provides a module output pole busbar outgoing structure which characterized in that includes: the end plate, the end plate insulating plate and the output electrode module;

the end plate insulating plates and the end plates are sequentially arranged along the arrangement direction of the batteries in the battery cell module;

the end plate insulating plate is positioned between the end plate and an output end battery, and the output end battery is a battery close to an output electrode in the battery cell module;

the end plate, the end plate insulator plate configured to enable a portion of an output electrode module to be secured between the end plate and the end plate insulator plate;

the output pole module includes: an output electrode, an output electrode bus bar, and an intermediate portion;

the output electrode bus bar is a bus bar between a battery at the end part of the battery core module and the output electrode, and the directions of the output electrode bus bar and the bus bar between the batteries in the battery core module are consistent;

the plane where the bus bars are located is parallel to the arrangement direction of the batteries in the battery cell module;

the plane of the output electrode is intersected with the plane of the output electrode bus bar;

the output pole bus bar is electrically connected to the output pole through the intermediate portion.

2. The module output pole bus bar exit structure of claim 1, wherein the end plate, the end plate insulating plate are configured to enable clamping of the middle portion between the end plate and the end plate insulating plate.

3. The module output pole bus bar exit structure of claim 2, wherein the plane of the middle portion, the plane of the end plate, and the plane of the end plate insulating plate are parallel to each other.

4. The modular output pole bus bar exit structure of claim 2, wherein the plane of the output pole is perpendicular to the plane of the output pole bus bar.

5. The module output electrode bus bar lead-out structure of claim 4, wherein a plane of the output electrode, a plane of the output electrode bus bar, and a plane of the middle portion are perpendicular to each other two by two.

6. The modular output pole bus bar exit structure of claim 1 wherein a side of the end plate adjacent to the end plate insulating plate is provided with a groove;

the recess is configured to receive the intermediate portion.

7. The modular output pole bus bar exit structure of claim 6, wherein the recess is further configured to accommodate the output pole.

8. The modular output pole bus bar exit structure of any of claims 1 to 7, wherein the face of the output pole module that contacts the end plate is covered with an insulating layer.

9. The utility model provides a battery cell module which characterized in that includes: at least two batteries, busbars, modular output pole busbar lead-out structures according to any one of claims 1 to 8 arranged in sequence; wherein the content of the first and second substances,

two adjacent batteries are electrically connected through the bus bar to realize series connection.

Images