阅读说明：本技术 一种集成化的电池模组 (Integrated battery module ) 是由 达尼埃尔布鲁塞斯 于 2021-09-26 设计创作，主要内容包括：本发明提供了一种电池模组,其包括整体水平地设置于电池模组的多个电芯的上方的线束隔离板集成模块；该线束隔离板集成模块将导电片组与隔离板集成为一个整体结构,并且每一个隔离单元的两条侧边部均设置至少一个弹性部分,在具体的应用实践中,若电芯发生膨胀,隔离单元两条侧边部的弹性部分发生弹性形变,从而吸收掉电芯膨胀产生的拉力,防止隔离板发生断裂；此外,还能够很好地解决因电芯高度不一致所导致的高度较低的电芯极柱与导电片之间焊接不良的问题。(The invention provides a battery module, which comprises a wiring harness isolation plate integrated module, a plurality of battery cores and a plurality of battery modules, wherein the wiring harness isolation plate integrated module is integrally and horizontally arranged above the plurality of battery cores of the battery module; in a specific application practice, if the battery cell expands, the elastic parts on the two side edges of the isolation unit elastically deform, so that tension generated by expansion of the battery cell is absorbed, and the isolation plate is prevented from being broken; in addition, the problem of poor welding between the battery cell pole column with lower height and the conducting strip caused by inconsistent battery cell height can be well solved.)

1. A battery module, its characterized in that:

the battery module comprises a plurality of electric cores and a wiring harness isolation plate integrated module which are closely arranged;

the wiring harness isolation plate integrated module is integrally and horizontally arranged above a plurality of battery cores of the battery module;

the wire harness isolation plate integrated module comprises a plurality of conductive sheet groups and isolation plates;

each conducting strip group comprises at least one conducting strip, and each conducting strip is arranged on a pole of a corresponding battery cell; when one conducting strip group comprises a plurality of conducting strips, two adjacent conducting strips are connected end to end along the cell arrangement direction;

the isolating plate is provided with a plurality of isolating units arranged along the arrangement direction of the battery cores, a first accommodating space for accommodating one conducting sheet set is formed in each isolating unit, and at least one end part of each conducting sheet set is fixed in the isolating unit;

two side edge parts of the isolation unit respectively comprise at least one elastic part, and the elastic parts are provided with elastic deformation directions extending along the arrangement direction of the battery cells.

2. The battery module according to claim 1, wherein:

the elastic portion has a linear structure in a U-shape, a W-shape, or the like.

3. The battery module according to claim 1, wherein:

when one conducting strip group comprises a plurality of conducting strips, the adjacent conducting strips are connected end to end through a first elastic body, and the first elastic body is provided with an elastic deformation direction extending along the arrangement direction of the battery cell.

4. The battery module according to claim 3, wherein:

the first elastic body is connected with the adjacent edge strip part of the adjacent conducting strip and is arranged in an extending mode, and the cross section of the first elastic body is in an inverted U shape or the like.

5. The battery module according to claim 1, wherein:

the isolation plate further comprises a plurality of second elastic pieces, the adjacent isolation units are connected through at least one second elastic piece, and the second elastic pieces are provided with elastic deformation directions extending along the arrangement direction of the battery cells.

6. The battery module according to claim 5, wherein:

the second elastic member has a linear structure in a U-shape, a W-shape, or the like.

7. The battery module according to claim 1, wherein:

two side edge parts of the conducting strip group are respectively separated from two side edge parts of the isolation unit.

8. The battery module according to claim 7, wherein:

the isolation plate is integrally injection-molded, so that the plurality of conductive sheet groups and the isolation plate are integrated into a whole.

9. The battery module according to any one of claims 1 to 8, wherein:

the wiring harness isolation plate integrated module also comprises a circuit board for low-voltage sampling and a plurality of collecting nickel sheets;

the circuit board is a low-voltage sampling wiring harness board or a flexible circuit board;

a second accommodating space for accommodating the circuit board is formed in the isolating plate, the circuit board is separated from the isolating unit,

each conducting strip group is electrically connected with the circuit board through one or more collecting nickel sheets.

10. The battery module according to claim 9, wherein:

each collecting nickel sheet is provided with a first end part connected with the circuit board, a second end part connected with the corresponding conducting sheet group and a middle part positioned between the first end part and the second end part;

each isolation unit is provided with a fixing structure fixedly connected with the middle part of the corresponding acquisition nickel sheet;

the isolation plate is integrally injection-molded, so that the plurality of conducting plate groups, the circuit board, the plurality of collecting nickel plates and the isolation plate are integrated into a whole.

Technical Field

The invention relates to an integrated battery module, and belongs to the technical field of batteries.

Background

The battery module is the minimum unit of new forms of energy power electrical power generating system, and it generally mainly includes subassembly such as electric core, conducting strip (for example aluminium bar), the pencil board or flexible circuit board (FPC) that are used for the low pressure sampling, pencil division board to and module end plate, module curb plate and module apron.

Wherein, contain a plurality of electric cores in the battery module, the top terminal surface welding conducting strip (aluminium bar) of the utmost point post of every electric core, thereby the electricity between the conducting strip is connected the series connection or the parallel connection between the realization electric core. The wiring harness isolation plate is used for isolating the battery core and the conducting strips of the battery core from a wiring harness plate or an FPC (flexible printed circuit) used for low-voltage sampling, and the structure can protect the battery.

The wire harness isolation plate in the prior art is generally made of hard plastic, but has some problems in practical application. For example, as the service time and the number of charging and discharging times of the battery increase, the battery core expands to generate a large expansion force; the longer the time, the larger the expansion force, and the expansion force can reach between 10KN and 30KN by the end of the service life of the battery; the expansion force of the cell can cause the conductive sheet (aluminum bar) and the wire harness separator plate to stretch and fail structurally. In addition, since a plurality of battery cells exist in the battery module, the heights of the battery cells (the top end surfaces of the poles) cannot be completely consistent in practice; however, the conductive sheet (aluminum bar) is limited to the same height plane by the wire harness isolation plate, and therefore, a gap may exist between the cell pole with a lower height and the conductive sheet (aluminum bar), which may cause poor welding (such as cold welding) or easy failure of welding between the cell pole and the conductive sheet.

Disclosure of Invention

In order to solve the above-mentioned problems, an aspect of the present invention provides a battery module, wherein,

the battery module comprises a plurality of electric cores and a wiring harness isolation plate integrated module which are closely arranged;

the wiring harness isolation plate integrated module is integrally and horizontally arranged above a plurality of battery cores of the battery module;

the wire harness isolation plate integrated module comprises a plurality of conductive sheet groups and isolation plates;

each conducting strip group comprises at least one conducting strip, and each conducting strip is arranged on a pole of a corresponding battery cell; when one conducting strip group comprises a plurality of conducting strips, two adjacent conducting strips are connected end to end along the cell arrangement direction;

the isolating plate is provided with a plurality of isolating units arranged along the arrangement direction of the battery cores, a first accommodating space for accommodating one conducting sheet set is formed in each isolating unit, and at least one end part of each conducting sheet set is fixed in the isolating unit;

two side edge parts of the isolation unit respectively comprise at least one elastic part, and the elastic parts are provided with elastic deformation directions extending along the arrangement direction of the battery cells.

Preferably, the elastic portion has a linear structure in a U-shape, a W-shape, or the like.

Preferably, when one conducting strip group comprises a plurality of conducting strips, the adjacent conducting strips are connected end to end through a first elastic body, and the first elastic body has an elastic deformation direction extending along the arrangement direction of the battery cells.

Preferably, the first elastic body is connected with and extends from the adjacent edge strip part of the adjacent conducting strip, and the cross section of the first elastic body is in an inverted U shape or the like.

Preferably, the separator further includes a plurality of second elastic members, and adjacent separator units are connected by at least one second elastic member, and the second elastic member has an elastic deformation direction extending along the arrangement direction of the battery cells.

Preferably, the second elastic member has a linear structure in a U-shape, a W-shape, or the like.

Preferably, two side portions of the conductive sheet group are separated from two side portions of the isolation unit, respectively.

Preferably, the isolation plate is integrally injection-molded, so that the plurality of conductive sheet groups and the isolation plate are integrated into a whole;

preferably, the wiring harness isolation plate integrated module further comprises a circuit board for low-voltage sampling and a plurality of collecting nickel sheets;

the circuit board is a low-voltage sampling wiring harness board or a flexible circuit board;

a second accommodating space for accommodating the circuit board is formed in the isolating plate, the circuit board is separated from the isolating unit,

each conducting strip group is electrically connected with the circuit board through one or more collecting nickel sheets.

Preferably, each collecting nickel sheet has a first end connected with the circuit board, a second end connected with the corresponding conducting sheet group, and a middle part between the first end and the second end;

each isolation unit is provided with a fixing structure fixedly connected with the middle part of the corresponding acquisition nickel sheet.

Preferably, the isolation plate is integrally injection-molded, so that the plurality of conductive sheet groups, the circuit board, the plurality of collecting nickel sheets and the isolation plate are integrated into a whole.

The invention provides a battery module, which comprises a wiring harness isolation plate integrated module, a plurality of battery cores and a plurality of battery modules, wherein the wiring harness isolation plate integrated module is integrally and horizontally arranged above the plurality of battery cores of the battery module; in a specific application practice, if the battery cell expands, the elastic parts on the two side edges of the isolation unit elastically deform, so that tension generated by expansion of the battery cell is absorbed, and the isolation plate is prevented from being broken; in addition, the problem of poor welding between the battery cell pole column with lower height and the conducting strip caused by inconsistent battery cell height can be well solved.

Drawings

Fig. 1 is a perspective view of an integrated wiring harness isolation plate integrated module of embodiment 1 of the present invention;

fig. 2 is a schematic view of the overall structure of a battery module according to embodiment 1 of the present invention.

Detailed Description

The present invention will be described in detail below with reference to specific embodiments shown in the drawings. These embodiments are not intended to limit the present invention, and structural, methodological, or functional changes made by those skilled in the art according to these embodiments are included in the scope of the present invention.

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their repetitive description will be omitted.

The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to provide a thorough understanding of embodiments of the invention. One skilled in the relevant art will recognize, however, that the invention may be practiced without one or more of the specific details, or with other methods, components, materials, and so forth. In some instances, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring the invention.

Example 1

Embodiment 1 of the present invention provides, in one aspect, an integrated wiring harness insulation board integrated module 100, as shown in fig. 1.

In another aspect, embodiment 1 of the present invention further provides a battery module 200 using the integrated wire harness isolation board integrated module 100, as shown in fig. 2, the wire harness isolation board integrated module 100 is wholly and horizontally disposed above the battery core 20 of the battery module 200.

As shown in fig. 1 and 2, the wire harness separator integrated module 100 includes a plurality of conductive sheet groups 2 and separators 1.

Each conductive sheet group 2 comprises at least one conductive sheet 21, and each conductive sheet 21 is disposed on a corresponding pole of the battery cell 20 (not specifically shown in the figure); when a plurality of conducting strips 21 are included in one conducting strip group 2, two adjacent conducting strips 21 are connected end to end along the cell arrangement direction.

The specific arrangement of the conductive sheet 21 and the conductive sheet group 2 is designed according to the arrangement and the electrical connection condition of the battery cells 20 of the battery module 200. Fig. 1 shows a specific case of embodiment 1 of the present invention, where two locations a and B are positive and negative electrode end portions of the whole battery module 200, and thus there is only one conducting strip 21 in the conducting strip group 2 corresponding to the two locations; except for the two positions A and B, the other conducting strip groups 2 comprise two conducting strips 21, and the two conducting strips 21 are connected end to end. Of course, in an alternative embodiment of the present invention, one conductive sheet set 2 may further include more than two conductive sheets 21, which are connected end to end in pairs, and the design is determined according to the specific situation of the battery cell 20.

Specifically, in this embodiment, the conductive sheet 21 is an aluminum bar, and each aluminum bar is welded to the top of the terminal of the corresponding electrical core, so as to achieve electrical connection.

The division board 1 has the isolation unit 10 that the several set up along electric core 20 direction of arranging, has formed the first accommodation space (not marked in the figure) of a conducting strip group 2 of holding in each isolation unit 10, and the both ends have at least one tip to be fixed in isolation unit 10 around conducting strip group 2, and two lateral parts of isolation unit 10 all include at least one elastic component 11, and elastic component 11 has the elastic deformation direction that extends along the direction of arranging of electric core.

In the wiring harness isolation plate integrated module 100 with the above structure, at least one end of the front end and the rear end of the conductive sheet group 2 is fixed in the isolation unit 10, that is, the conductive sheet group 2 and the isolation plate 1 are integrated into an integral structure; more importantly, both side edge portions of the barrier unit 10 include at least one elastic portion 11; in a specific application, if the cell 20 expands, the conductive sheet group 2 is stretched; because conducting strip group 2 transmits power to isolation unit 10 through its front and back both ends portion, isolation unit 10 receives behind the pulling force along electric core direction of arranging, and elastic deformation takes place for elastic component 11 of its two side portions to absorb the pulling force that falls the core inflation production, prevent that division board 1 from taking place the fracture. In addition, in practice, if the problem of poor welding between the cell pole and the conducting strip with lower height caused by inconsistent cell height occurs, the existence of the elastic parts 11 at the two side parts of the isolation unit 10 can contain errors in actual products, so that the problem can be well solved; in the concrete operation process, to highly lower electric core utmost point post, the operator only need with the conducting strip 21 that corresponds press down can, elastic component 11 produces deformation and can absorb most pressing force, avoids the division board to break because of pressing (in the division board that adopts hard material and structural design in the past, if press, press the division board fracture very easily).

Preferably, in this embodiment, two side portions of the conductive sheet group 2 are separated from two side portions of the isolation unit 10 (or "separated", two side portions of the conductive sheet group 2 are not connected to the isolation unit 10); (ii) a Thus, the two side portions of the isolation unit do not affect the stretching of the conductive sheet set 2 (due to the expansion of the battery cell 20), and the conductive sheet set 2 directly transmits the force to the isolation unit 10 through the front and rear end portions thereof.

Specifically, in the present embodiment, as shown in fig. 1, except for two positions a and B, each of the other conductive sheet groups 2 includes two conductive sheets 21, and the two conductive sheets 21 are connected end to end; both the front and rear end portions of the conductive sheet group 2 including the two conductive sheets 21 are fixed in the isolation unit 10. The two positions a and B are the positive and negative electrode end portions of the whole battery module 200, the conductive sheet group 2 at the two positions only contains one conductive sheet 21, only one end portion can be fixed in the isolation unit 10, and a certain gap is reserved between the other end portion and the isolation unit 10.

In the embodiment, the whole isolation plate 1 is formed by injection molding; for example, each conducting sheet group 2 is positioned in an injection mold of the isolation plate 1 by using a positioning hole, and in the process of injection molding of the isolation plate 1, the material of each isolation unit 10 of the isolation plate 1 covers the end of the conducting sheet group 2 inside the isolation plate (covers the front end and the rear end or covers one end), so that after molding, the end of each conducting sheet group 2 is embedded into the corresponding isolation unit 10, and the embedding and fixing are realized; a plurality of conductive sheet groups 2 and the isolation plate 1 are also integrated into a whole structure, which is called an integrated wiring harness isolation plate integrated module 100.

In a specific embodiment of the present invention, the elastic parts 11 of both side edge parts of the insulation unit 10 have a linear structure in a U-shape, a W-shape or the like; alternatively stated, the elastic portion 11 has a linear curved configuration resembling a wave. Specifically, in the present embodiment, as shown in fig. 1, the elastic portions 11 of the two side edge portions of the partitioning unit 10 are convexly curved outward. In principle, the elastic parts 11 of the two side parts can also be bent convexly inward, but will affect the conducting strip group 2 in the isolating unit 10, and the two side parts of the isolating unit 10 cannot be separated from the conducting strip group 2. In principle, the elastic parts 11 of the two side edge parts can also be convexly bent upwards or downwards based on the plane of the isolation plate 1, but the upward bending can thicken the isolation plate 1, which is not in line with the practical requirement of reducing the overall size of the battery module; the downward bending affects the connection between the conductive sheet 21 and the battery cell 20.

Specifically, in the present embodiment, as shown in fig. 1, in one isolation unit 10, one elastic portion 11 is provided on each of both sides (both side edge portions of the isolation unit 10) where each conductive sheet 21 is located. That is, if the conductive sheet group 2 in one isolation unit 10 includes two conductive sheets 21, two elastic portions 11 are respectively disposed on both sides of the isolation unit 10. The group of conductive sheets shown in fig. 1 at a and B includes only one conductive sheet 21, and one elastic portion 11 is disposed on each side of the isolating unit 10.

In a specific embodiment of the present invention, when a plurality of conductive sheets 21 are included in one conductive sheet group 2, adjacent conductive sheets 21 are connected end to end by the first elastic body 22, and the first elastic body 22 has an elastic deformation direction extending along the arrangement direction of the battery cells 20.

Specifically, in the present embodiment, as shown in fig. 1, the first elastic body 22 is connected to and extends along the adjacent edge portion of the adjacent conductive sheet 21, and the cross section of the first elastic body 22 has an inverted U shape or the like.

Specifically, in the present embodiment, in the conductive sheet set 2 of each isolation unit 10, the first elastic body 22 and the conductive sheets 21 are made of the same material, and the plurality of conductive sheets 21 and the first elastic body 22 therebetween are integrally formed to form an integral structure, that is, one conductive sheet set 2 is an integral structure.

Specifically, in this embodiment, as shown in fig. 1, the first elastic body 22 is convexly bent upward based on the plane of the conductive sheet group 2 to form an inverted U-shape or the like in cross section. In a specific practical application, the bent shape of the first elastic body 22 may not affect the connection between the conductive sheet 21 and the battery cell 20, so that an upward convex bending is adopted as much as possible, and an inverted U shape is adopted; in addition, the height of the upward protrusion of the first elastic body 22 is adapted to the practical requirements of the overall size of the battery module.

In a specific embodiment of the present invention, the separator 1 further includes a plurality of second elastic members 12, adjacent separator units 10 are connected by at least one second elastic member 12, and the second elastic members 12 have an elastic deformation direction extending along the arrangement direction of the battery cells 20.

In the present embodiment in particular, as shown in fig. 1, the second elastic member 12 has a linear structure in a W shape or a linear structure of a similar shape. Of course, in an alternative embodiment of the present invention, the second elastic member 12 may have a linear structure having a U-shape or the like.

Specifically, in the present embodiment, as shown in fig. 1, the curved linear structure of the second elastic member 12 is located in the planar structure of the separator 1, that is, the overall planar structure of the separator 1 is ensured, which meets the practical requirement of reducing the overall size of the battery module.

In a specific embodiment of the present invention, the wire harness isolation board integrated module 100 further includes a circuit board 3 for low voltage sampling and a plurality of collecting nickel sheets 4; the circuit board 3 is a low-voltage sampling wiring harness board or a flexible circuit board; a second accommodating space 5 for accommodating the circuit board 3 is formed in the isolation board 1, the circuit board 3 is separated from the plurality of isolation units 10, and each conductive sheet group 2 is electrically connected with the circuit board 3 through one or more collecting nickel sheets 4.

In the present embodiment, the circuit board 3 is a flexible circuit board (FPC) for low-voltage sampling.

In this embodiment, the collecting nickel plate 4 is divided into a nickel plate for collecting the voltage of the conducting plate group 2 or a nickel plate for collecting the temperature of the conducting plate group 2.

As shown in fig. 1, the conductive sheet group 2 in the isolation unit 10 at the two positions C and D is connected with the circuit board 3 through 2 collecting nickel sheets 4, wherein one collecting nickel sheet 4 is a voltage collecting nickel sheet, and the other collecting nickel sheet 4 is a temperature collecting nickel sheet. Except for the two positions C and D, the conducting strip group 2 of other isolation units 10 are connected with the circuit board 3 only through 1 voltage-collecting nickel strip 4.

In the present embodiment, each collecting nickel plate 4 has a first end portion (not labeled in the figure) connected to the circuit board 3, a second end portion (not labeled in the figure) connected to the corresponding conducting plate group 2, and a middle portion (not labeled in the figure) located between the first end portion and the second end portion; each isolation unit 10 is provided with a fixing structure 13 fixedly connected with the middle part of the corresponding collecting nickel sheet 4. If the isolating unit 10 only corresponds to one collecting nickel sheet 4, only one fixing structure 13 for fixing the collecting nickel sheet 4 is arranged on the isolating unit 10; if the isolation unit 10 corresponds to two collecting nickel sheets 4, the isolation unit 10 is provided with two fixing structures 13 for fixing the two collecting nickel sheets 4 respectively.

In the embodiment, the whole isolation plate 1 is formed by injection molding; for example, each conductive sheet set 2 and circuit board (FPC)3 are positioned in an injection mold of the isolation board 1 by using positioning holes, two ends of a plurality of collecting nickel sheets 4 are respectively welded with the corresponding conductive sheet set 2 and circuit board 3, and then the material of the isolation board 1 is injected into the injection mold for one-time injection molding. In the injection molding process of the isolation plate 1, on one hand, the material of each isolation unit 10 of the isolation plate 1 covers the end of the conductive sheet group 2 inside the isolation plate 1, and on the other hand, in order to avoid the influence of the high temperature of the injection molding process on the circuit board 3 (the circuit and the temperature sensor therein), the injection molding material forming the isolation units 10 needs to avoid the circuit board 3 (separated from the circuit board 3), the circuit board 3 is left outside the cavity of the injection mold, and the injection molding material only covers the middle part of the collecting nickel sheet 4; therefore, after molding, the end of each conducting strip group 2 is embedded inside the corresponding isolating unit 10, and each isolating unit 10 forms a fixing structure 13 fixedly connected with the collecting nickel strips 4, so that the isolating plate 1, the plurality of conducting strip groups 2, the circuit board 3 and the plurality of collecting nickel strips 4 are integrated into a whole structure, which is referred to as an integrated wiring harness isolating plate integrated module 100.

It should be understood that although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments can also be combined appropriately to form other embodiments understood by those skilled in the art.

The above-listed detailed description is only a specific description of a possible embodiment of the present invention, and they are not intended to limit the scope of the present invention, and equivalent embodiments or modifications made without departing from the technical spirit of the present invention should be included in the scope of the present invention.