CN213425139U

CN213425139U - Battery module

Info

Publication number: CN213425139U
Application number: CN202022338489.7U
Authority: CN
Inventors: 李宏太; 颜廷露; 孙东升; 刘军辉; 马豪
Original assignee: Avic Lithium Xiamen Technology Co ltd
Current assignee: Zhongchuangxin Aviation New Energy Xiamen Co ltd
Priority date: 2020-10-19
Filing date: 2020-10-19
Publication date: 2021-06-11
Anticipated expiration: 2030-10-19

Abstract

The utility model relates to a battery technology field discloses a battery module. The battery module comprises a low-voltage lead-out support, and the low-voltage lead-out support is positioned on one side of the battery module; and a plurality of accommodating structures used for accommodating low-voltage connectors on the battery module are arranged in the low-voltage leading-out support. In the embodiment, the low-voltage leading-out support with the plurality of accommodating structures is collected to accommodate a plurality of low-voltage connectors in the battery module, so that the number of the low-voltage leading-out supports required to be used is reduced, and the module integration level is improved.

Description

Battery module

Technical Field

The utility model relates to a battery technology field especially relates to a battery module.

Background

At present, the module and the PACK energy density are more and more concerned in the industry, more electric quantity is arranged or the quantity of parts is reduced as much as possible in a limited space, the module is also larger and larger, and the demand of low-voltage signal acquisition points is more and more.

The existing low-pressure interface is laterally arranged and matched with the end plate, the larger the height size of the low-pressure interface is, the lower the size of the end plate is, and the integral structural strength is influenced; current low pressure is gathered and is mostly single connector collection, and this type of structure need use a plurality of low pressures to draw forth the support when big module or collection demand are more, increases spare part quantity, influences the module integrated level.

SUMMERY OF THE UTILITY MODEL

The utility model provides a battery module for what exist among the solution prior art disposes the low pressure respectively for every connector and draws forth the support and cause battery module spare part quantity more, influence the problem of module integrated level.

The embodiment of the utility model provides a battery module, which comprises a low-voltage lead-out support, wherein the low-voltage lead-out support is positioned at one side of the battery module;

and a plurality of accommodating structures for accommodating low-voltage connectors on the battery module are arranged in the low-voltage leading-out support.

In the embodiment, the low-voltage leading-out support is provided with a plurality of accommodating structures, so that a plurality of low-voltage connectors on the battery module can be accommodated at the same time, the number of low-voltage leading-out supports required to be used is reduced, and the integration level of the module is improved; meanwhile, the low-voltage leading-out support can be arranged on one side, close to the battery management system, of the battery module, so that the length of a wiring harness for connecting the low-voltage connector with the battery pipe system is shortened.

Drawings

For a better understanding of the invention, reference may be made to the embodiments illustrated in the following drawings. The components in the drawings are not necessarily to scale, and related elements may be omitted in order to emphasize and clearly illustrate the technical features of the present disclosure. In addition, the relevant elements or components may be arranged differently as is known in the art. Further, in the drawings, like reference characters designate the same or similar parts throughout the several views.

Fig. 1 is an assembly effect diagram of a low-voltage lead-out support and a low-voltage connector according to an embodiment of the present invention;

FIG. 2 is an exploded view of the low voltage outlet cradle and low voltage connector assembly shown in FIG. 1;

FIG. 3 is a top view of the low voltage outlet cradle and low voltage connector shown in FIG. 1 assembled;

fig. 4 is a diagram illustrating an assembly effect of a low-voltage lead-out support (including a low-voltage connector) and an end plate according to an embodiment of the present invention;

fig. 5 is a schematic view of a low-voltage leading-out support according to an embodiment of the present invention;

fig. 6 is another schematic view of a low-pressure leading-out support according to an embodiment of the present invention;

fig. 7 is another schematic view of a low-pressure outlet support according to an embodiment of the present invention;

FIG. 8 is a simplified diagram of the assembly of the low voltage outlet support (including the low voltage connector) and the low voltage collection circuitry shown in FIG. 5;

FIG. 9 is a schematic view of an alternative assembly of the low voltage outlet support (including the low voltage connector) and the low voltage collection circuitry shown in FIG. 5;

FIG. 10 is a diagrammatic view of the assembly of the low voltage outlet support (including low voltage connectors) and the low voltage collection circuitry shown in FIG. 7;

FIG. 11 is a schematic view of an alternative assembly of the low voltage outlet support (including low voltage connectors) and low voltage collection circuitry shown in FIG. 7;

fig. 12 is a partial structure diagram of a low voltage collecting circuit according to an embodiment of the present invention.

Reference numerals:

10-low pressure leading-out support

11-containment structure

111-first partition 112-second partition 113-opening

20-low-voltage connector 21-connection terminal

30-low voltage collection line 31-branch

301-3/4 rounded 302-C buffer

303-Z-shaped buffer 304-ladder structure

40-end plate

Detailed Description

The technical solutions in the exemplary embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the exemplary embodiments of the present disclosure. The example embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the present disclosure, and it is, therefore, to be understood that various modifications and changes may be made to the example embodiments without departing from the scope of the present disclosure.

In the description of the present disclosure, unless otherwise explicitly specified or limited, the terms "first", "second", and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more; the term "and/or" includes any and all combinations of one or more of the associated listed items. In particular, reference to "the" object or "an" object is also intended to mean one of many such objects possible.

The terms "connected," "secured," and the like are to be construed broadly and unless otherwise stated or indicated, and for example, "connected" may be a fixed connection, a removable connection, an integral connection, an electrical connection, or a signal connection; "connected" may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present disclosure can be understood by those skilled in the art as the case may be.

Further, in the description of the present disclosure, it is to be understood that the directional words "upper", "lower", "inner", "outer", etc., which are described in the exemplary embodiments of the present disclosure, are described at the angles shown in the drawings, and should not be construed as limiting the exemplary embodiments of the present disclosure. It will also be understood that, in this context, when an element or feature is referred to as being "on", "under", or "inner", "outer" with respect to another element(s), it can be directly on "," under ", or" inner "," outer "with respect to the other element(s), or indirectly on", "under", or "inner", "outer" with respect to the other element(s) via intervening elements.

As shown in fig. 1, 2, 3, and 4, the battery module includes a low voltage lead-out holder 10, and the low voltage lead-out holder 10 is located at one side of the battery module;

the low voltage outlet support 10 is provided with a plurality of receiving structures 11 for receiving low voltage connectors 20 on the battery module.

Wherein, low voltage connector 20 is used for connecting low pressure collection circuit 30 and battery management system, low pressure collection circuit 30 can gather the voltage signal of the battery cell that sets up in the battery module, current signal, information such as temperature signal, when the quantity of battery cell is more, can satisfy the collection demand on the one hand through setting up a plurality of low voltage connector 20, on the other hand can reduce single low voltage connector 20's the height of inclining out, thereby provide great space for the design of end plate 40 in the direction of height, so as to be favorable to improving the structural strength of end plate 40.

The low-voltage leading-out support 10 is internally provided with a plurality of accommodating structures 11 capable of accommodating a plurality of low-voltage connectors 20 at the same time, the number of the accommodating structures 11 is not less than that of the low-voltage connectors 20, preferably, the accommodating structures 11 correspond to the low-voltage connectors 20 one by one, and each accommodating structure 11 is internally provided with one low-voltage connector 20. The inner space of the accommodating structure 11 is adapted to the shape and size of the low-voltage connector 20, and the accommodating structure 11 can fix and support the low-voltage connector 20 by structural limitation.

After the low-voltage leading-out support 10 and the low-voltage connectors 20 are assembled, the low-voltage connectors 20 are all located on the same side of the battery module, so that external circuits between the low-voltage connectors 20 and the battery management system are led out from the same side of the battery module, and the wiring mode between the battery module and the battery management system is simplified.

When the battery pack is specifically arranged, the low-voltage leading-out support 10 can be arranged on one side, close to the battery management system, of the battery module, so that the length of a wiring harness between the low-voltage connector 20 and the battery management system is shortened, the internal space occupied by the wiring harness is saved, and the energy density of the battery pack is improved.

In the battery module, the low-voltage leading-out support 10 is an integral structure, that is, the plurality of accommodating structures 11 form an integral assembly, and the low-voltage leading-out support 10 can be integrally formed through an injection molding process or a welding process, or can be formed through other process means, which is not limited specifically herein.

Thus, the low-voltage leading-out support 10 with the accommodating structures 11 is adopted to simultaneously accommodate a plurality of low-voltage connectors 20 on the battery module, the number of low-voltage leading-out supports 10 required to be used is reduced, and the module integration level is improved.

Optionally, the low voltage lead out holder 10 is provided on the end plate 40 of the battery module and/or the harness board assembly. Specifically, the fixing may be performed by various methods such as inserting, welding, bonding, or fastening, and is not limited herein.

In the battery module, a plurality of receiving structures 11 in a low voltage lead-out holder 10 are arranged in a row in a length direction or a width direction of the battery module. The number of the accommodating structures 11 may be two, three, four or other numbers, which are specifically set as required, and now two accommodating structures 11 are taken as an example for specific description, wherein the X axis represents the length direction of the battery module, and the Y axis represents the width direction of the battery module:

for example, as shown in the schematic diagrams of fig. 5 and 6, two receiving structures 11 are arranged in a row along the longitudinal direction (X-axis direction) of the battery module.

For another example, as shown in the schematic diagram of fig. 7, the two receiving structures 11 are arranged in a row along the width direction (Y-axis direction) of the battery module.

When the number of the receiving structures 11 exceeds two, one row may be formed in the length direction of the battery module, two or three rows may be formed, and the like, and the plurality of rows of the receiving structures 11 are disposed in the width direction of the battery module.

In addition, the plurality of receiving structures 11 may be arranged in other ways, such as randomly, so long as the low-voltage connectors 20 can be received without interfering with other components when the space requirement is satisfied.

When the low-voltage connector 20 is disposed in the receiving structure 11 of the low-voltage leading-out support 10, the connecting terminal 21 of the low-voltage connector 20 needs to be plugged into or pulled out from an external circuit, and therefore, the receiving structure 11 needs to be provided with an opening 113 to expose the connecting terminal 21 of the low-voltage connector 20. Alternatively, as shown in fig. 2 and 4, an opening 113 is provided at one end of the receiving structure 11 in the width direction of the battery module, and the opening 113 corresponds to the connection end 21 of the low-voltage connector 20 provided inside.

The opening 113 is formed in the side wall of the accommodating structure 11, and the orientation of the opening 113 is consistent with the width direction of the battery module, so that the existing space in the width direction of the battery module can be fully utilized when wiring is performed, and the extra increase of the length dimension of the battery module by a circuit is avoided.

In particular, the openings 113 of any two of the plurality of receiving structures 11 in the low pressure outlet support 10 are oriented in the same or opposite directions. Two receiving structures 11 are still taken as an example for specific description:

for example, as shown in the schematic view of fig. 5, the openings 113 of the two receiving structures 11 have the same direction;

for another example, as shown in the schematic diagrams of fig. 6 and 7, the openings 113 of the two receiving structures 11 are opposite in direction.

The direction of the opening 113 of the receiving structure 11 is related to the spatial layout of the battery module on the side of the low voltage leading-out support 10, so that when the low voltage connector 20 is inserted into or pulled out of the external circuit, there is a corresponding operating space without interfering with other components.

In a specific embodiment, a plurality of accommodating structures 11 are arranged along the length direction of the battery module, each accommodating structure 11 comprises a first partition plate 111 and a second partition plate 112 which are arranged at intervals along the length direction of the battery module, and the first partition plate 111 and the second partition plate 112 are arranged in sequence along the direction far away from the battery module;

the first partition board 111 and the second partition board 112 are disposed in a staggered manner at ends close to the opening 113, and a projection of one end of the second partition board 112 close to the opening 113 on a plane where the first partition board 111 is located in the first partition board 111.

Wherein, along the length direction of the battery module, the first separator 111 is closer to the end of the battery module than the second separator 112; "the ends of the first and

second separators

111, 112 adjacent to the opening 113 are disposed in a staggered manner" means that the end of the first separator 111 adjacent to the opening 113 is not aligned with the end of the second separator 112 adjacent to the opening 113 in the width direction of the battery module;

"the projection of the end of the second partition 112 close to the opening 113 on the plane of the first partition 111 is located in the first partition 111", in other words, the first partition 111 protrudes out of the second partition 112 at the end close to the opening 113.

Specifically, as shown in fig. 5, at the end close to the opening 113, the first partition 111 protrudes out of the second partition 112, and at the other end far from the opening 113, the first partition 111 is aligned with the second partition 112, and the length of the first partition 111 is greater than that of the second partition 112; in this manner, the opening 113 of the receiving structure 11 is enlarged, providing a larger space for the connecting end 21 of the low-voltage connector 20.

Further, two receiving structures 11 arranged in a row in the length direction of the battery module share one partition plate therebetween. In this case, as shown in fig. 5 and 6, the directions of the openings 113 of the housing structures 11 may be the same or opposite.

It should be noted that, in addition to the first partition 111 and the second partition 112, the receiving structure 11 further includes other partitions which together form a receiving space corresponding to the size and shape of the low-voltage connector 20, and therefore, will not be described in detail.

This battery module still includes that low pressure gathers circuit 30, and low pressure gathers circuit 30 and includes connecting portion, wherein:

the connecting part comprises a plurality of branches 31, and the plurality of branches 31 correspond to the low-voltage connectors 20 on the battery module one by one and are electrically connected.

The low-voltage acquisition circuit 30 is arranged on the wiring harness board assembly and is used for acquiring information such as voltage signals, current signals, temperature signals and the like of the single batteries arranged in the battery module; the low-voltage acquisition circuit 30 is electrically connected with the low-voltage connector 20, and the low-voltage connector 20 is electrically connected with the battery management system through an external circuit, so that the battery pipeline system can monitor the service state of the single battery.

When the number of the single batteries is large, the acquisition requirements on signals such as voltage, current, temperature and the like are also large, if one low-voltage connector 20 is adopted, the number of pins of the connecting end 21 on the low-voltage connector 20 is large, the side height is also large, and therefore the design space of the end plate 40 is squeezed; in this application, adopted a plurality of low pressure connector 20, it is corresponding, low pressure collection circuit 30 then includes a plurality of branches 31, and every branch 31 is connected with a low pressure connector 20 electricity respectively to reduce the pin quantity in every low pressure connector 20, and then reduced low pressure connector 20's the height of inclining out, released great installation space for end plate 40.

Specifically, the branches 31 may be laid flat without being stacked in the thickness direction, and each branch 31 is electrically connected to one low-voltage connector 20; accordingly, the receiving structure 11 (in which the low-voltage connector 20 is provided) may be provided in the length direction of the battery module or in the width direction of the battery module. Two branches 31 are taken as an example for specific explanation:

for example, as shown in the schematic diagram of fig. 8, two branches 31 are laid flat and electrically connected to the low-voltage connectors 20 in the receiving structure 11 provided along the longitudinal direction of the battery module.

For another example, as shown in the schematic diagram of fig. 10, two branches 31 are laid flat and electrically connected to the low-voltage connectors 20 in the housing structure 11 provided in the width direction of the battery module.

Alternatively, the branches 31 may be stacked, and some of the branches 31 may be stacked in the thickness direction; accordingly, the receiving structure 11 (in which the low-voltage connector 20 is provided) may be provided in the length direction of the battery module or in the width direction of the battery module. Two branches 31 are taken as an example for specific explanation:

for example, as shown in the schematic diagram of fig. 9, the two branches 31 are partially laminated in the thickness direction and electrically connected to the low-voltage connectors 20 in the housing structure 11 provided along the longitudinal direction of the battery module.

For another example, as shown in the schematic diagram of fig. 11, two branches 31 are partially laminated in the thickness direction and electrically connected to the low-voltage contacts 20 in the housing structure 11 provided in the width direction of the battery module.

It should be noted that the low voltage collecting line 30 may include a flexible circuit board, the connecting end 21 of which includes a plurality of the branches 31; it may also comprise a combination of a plurality of flexible circuit boards, each forming one of the above-mentioned branches 31.

The low-voltage acquisition line 30 adopts a same-side bent acquisition structure above the single battery, and meets the acquisition requirement under the condition of not increasing the width of the conductive bar (reducing weight); meanwhile, as shown in fig. 12, 3/4 rounded corners 301, C-shaped buffers 302, Z-shaped buffers 303 and a stepped structure 304 are used, so that the acquisition requirement and the buffer requirement are met under the condition that the thickness of the battery is constant (the space in the X direction is small).

Can see through the above description, the embodiment of the utility model provides a battery module gathers the low pressure that has a plurality of containment structures and draws forth the support to hold a plurality of low pressure connectors in the battery module, reduced the quantity that the support was drawn forth to the low pressure of required use, improved the module integrated level.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and example embodiments be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. The battery module is characterized by comprising a low-voltage lead-out support, wherein the low-voltage lead-out support is positioned on one side of the battery module;

2. The battery module according to claim 1, wherein the low voltage lead-out holder is provided on an end plate and/or a harness plate assembly of the battery module.

3. The battery module according to claim 1 or 2, wherein a plurality of the receiving structures are arranged in line in a length direction or a width direction of the battery module.

4. The battery module according to claim 3, wherein an opening is provided at one end of the receiving structure in the width direction of the battery module, and the opening corresponds to a connection end of a low-voltage connector provided inside.

5. The battery module of claim 4, wherein the openings of any two of the plurality of receiving structures are oriented in the same or opposite directions.

6. The battery module according to claim 4 or 5, wherein the receiving structure comprises a first separator and a second separator which are arranged at intervals along the length direction of the battery module, and the first separator and the second separator are arranged in sequence along the direction away from the battery module;

the first partition plate and the second partition plate are arranged in a staggered mode, wherein one end, close to the opening, of the second partition plate is located in the first partition plate in a projection mode, wherein the projection of one end, close to the opening, of the second partition plate is located on the plane where the first partition plate is located.

7. The battery module according to claim 6, wherein two receiving structures arranged in line in the length direction of the battery module share a separator therebetween.

8. The battery module according to claim 1 or 2, wherein the plurality of receiving structures are of a unitary structure.

9. The battery module according to claim 1 or 2, further comprising a low voltage collecting line including a connecting portion, wherein:

the connecting part comprises a plurality of branches, and the branches correspond to the low-voltage connectors on the battery module one by one and are electrically connected.

10. The battery module of claim 9, wherein the plurality of branches are arranged in a tiled arrangement or a stacked arrangement.