CN218498309U

CN218498309U - Multifunctional integrated bus bar and battery pack

Info

Publication number: CN218498309U
Application number: CN202222717514.1U
Authority: CN
Inventors: 刘杰
Original assignee: Hangzhou Chezhizhi Technology Co ltd
Current assignee: Hangzhou Chezhizhi Technology Co ltd
Priority date: 2022-10-13
Filing date: 2022-10-13
Publication date: 2023-02-17
Anticipated expiration: 2032-10-13

Abstract

The utility model relates to a multifunctional integrated busbar and a battery pack, wherein the multifunctional integrated busbar comprises a busbar body, the busbar body comprises a supporting plate and a supporting leg plate, two ends of the same side of the supporting plate are respectively and integrally connected with a supporting leg plate, and the supporting plate and the supporting leg plate form a busbar body with a U-shaped structure; a plurality of groups of pole connecting holes and a plurality of pressure relief holes are formed in the supporting plate and are respectively arranged at intervals along the direction of openings at two ends of the busbar body; the stabilizer blade board dorsad the one end of backup pad is equipped with the stabilizer blade, two sides of busbar body are equipped with insulating support respectively, and two sides of stabilizer blade board department insulating support still are equipped with the flame retardant coating respectively. The utility model discloses can be fine bear the weight of electric core stack body, can also and battery package casing between form the pressure release passageway, when electric core takes place thermal runaway, can be fine with thermal runaway gaseous from the bottom of the battery package emission. The battery pack is safer and more compact, and the integration efficiency is higher.

Description

Multifunctional integrated bus bar and battery pack

Technical Field

The utility model relates to a busbar technical field, concretely relates to multi-functional integrated busbar and battery package.

Background

At present, two common square battery core cooling schemes are adopted, one scheme is bottom cooling, and the scheme occupies more Z-direction space; another kind is exactly to press from both sides between two electric cores 2 and establishes liquid cold plate body 1, as shown in fig. 6, if electric core is ternary electric core, ternary electric core can produce the inflation at continuous circulation in-process, in order to deal with the inflation, can absorb the inflation by attached bubble cotton or aerogel etc. on electric core opposite side, but does so easily and cause the radiating effect not good, has also increased the cost simultaneously.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve one kind or several kinds of above-mentioned technical problem, provide a multi-functional integrated busbar and battery package.

The utility model provides an above-mentioned technical problem's technical scheme as follows: a multifunctional integrated bus comprises a bus body, wherein the bus body comprises a support plate and support leg plates, the two ends of the same side of the support plate are respectively and integrally connected with the support leg plates, and the support plate and the support leg plates form a bus body with a U-shaped structure; a plurality of groups of pole connecting holes and a plurality of pressure relief holes are formed in the supporting plate and are respectively arranged at intervals along the direction of openings at two ends of the busbar body; the one end that the stabilizer blade board kept away from the backup pad is equipped with the stabilizer blade, two sides of busbar body are equipped with insulating support respectively, two sides of stabilizer blade department insulating support still are equipped with the flame retardant coating respectively.

The utility model has the advantages that: the utility model discloses a multi-functional integrated busbar, the weight of bearing electric core stack body that can be fine can also and battery package casing between form the pressure release passageway, when electric core takes place thermal runaway, can be fine with thermal runaway gaseous from the bottom of the battery package emission. The battery pack is safer and more compact, and the integration efficiency is higher.

On the basis of the technical scheme, the utility model discloses can also do following improvement.

Further, the insulation support is a plastic support, the plastic support is attached to the side face of the busbar body, the fireproof layer is mica paper, and the mica paper is attached to the plastic support.

The beneficial effect of adopting the above further scheme is: the mica paper can play an insulating role and also can play a fireproof role.

Furthermore, the support legs are metal pieces or insulating pieces welded at one end of the support plate, and the support leg plate and the support plate form a T-shaped structure; the metal piece is a bolt or a screw, and the insulating piece comprises structural adhesive.

The beneficial effect of adopting the further scheme is that: the bus bar body is conveniently placed in the battery can shell.

Further, every group utmost point post connecting hole contains positive post connecting hole and the negative pole post connecting hole of interval arrangement, and the interval between the positive post connecting hole of every group utmost point post connecting hole and the negative pole post connecting hole is equipped with a pressure release hole.

The beneficial effect of adopting the further scheme is that: the cell can be subjected to directional pressure relief.

Further, the supporting plate is arranged perpendicular to the leg plate; the busbar body is an aluminum plate or a steel plate.

A battery pack comprises the multifunctional integrated bus bar, and further comprises a battery pack shell and a battery cell stacking body formed by stacking a plurality of battery cells, wherein the battery cell stacking body is arranged in the battery pack shell, the bus bar body is further arranged on the inner side of the bottom of the battery pack shell, a support leg plate of the bus bar body is supported on the inner side of the bottom of the battery pack shell through a support leg, and a pressure relief channel is formed between the bus bar body and the battery pack shell; every electric core stack body corresponds a busbar body, and the anodal post and the negative pole post of each electric core of electric core stack body weld respectively in a set of utmost point post connecting hole, and the explosion venting valve of each electric core of electric core stack body corresponds with a pressure release hole respectively and arranges.

The utility model has the advantages that: the utility model discloses a battery package is safe compact more, and integrated efficiency is higher.

Further, still be equipped with a plurality of mica plates on the bottom medial surface of battery package casing, every electric core stack body corresponds sets up a mica plate, the stabilizer blade of busbar body passes through the stabilizer blade and supports on the mica plate.

Furthermore, a plurality of explosion-proof valves are arranged on the side wall of the battery pack shell, and each pressure relief channel corresponds to at least one explosion-proof valve.

Further, a guide groove is formed in the inner side face of the bottom of the battery pack shell, structural adhesive is arranged in the guide groove, and the support legs are arranged in the guide groove.

The beneficial effect of adopting the further scheme is that: the guide groove is arranged, so that the supporting legs are convenient to position and install.

Further, still be equipped with first liquid cold drawing and second liquid cold drawing in the battery pack casing, first liquid cold drawing is arranged with the second liquid cold drawing is perpendicular, first liquid cold drawing is attached in one side of a plurality of electric core stacks and is located the top of battery pack casing, and the electric core stacks one side between the adjacent electric core stacks and marginal position all is equipped with the second liquid cold drawing.

Drawings

Fig. 1 is a schematic view of a bus bar body according to the present invention;

FIG. 2 is a schematic top view of the bus bar body of the present invention;

FIG. 3 is a first schematic view of the assembly of the bus bar body in the battery can body according to the present invention;

fig. 4 is a schematic view of a top view of the battery cell of the present invention assembled in the battery can body;

fig. 5 is a schematic view of a partial structure of the battery pack case of the present invention;

fig. 6 is a schematic structural view of the bus bar body of the present invention assembled in the battery can body.

In the drawings, the components represented by the respective reference numerals are listed below:

1. a busbar body; 11. a support plate; 12. a foot supporting plate; 13. a leg; 14. an insulating support; 15. a fire barrier layer; 16. pole connecting holes; 17. a pressure relief vent;

2. an electric core; 21. a positive post; 22. a negative pole post;

3. a battery pack housing; 31. an explosion-proof valve; 32. a pressure relief channel; 33. mica plates; 34. a first liquid cold plate; 35. a second liquid cooling plate.

Detailed Description

The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.

As shown in fig. 1 to 6, the multifunctional integrated bus bar of the present embodiment includes a bus bar body 1, the bus bar body 1 includes a support plate 11 and a leg plate 12, both ends of the same side of the support plate 11 are respectively integrally connected with the leg plate 12, and the support plate 11 and the leg plate 12 form a U-shaped bus bar body 1; a plurality of groups of pole connecting holes 16 and a plurality of pressure relief holes 17 are formed in the supporting plate 11, and the plurality of groups of pole connecting holes 16 and the plurality of pressure relief holes 17 are respectively arranged at intervals along the direction of openings at two ends of the busbar body 1; one end of the supporting foot plate 12, which deviates from the supporting plate 11, is provided with a supporting foot 13, two side surfaces of the busbar body 1 are respectively provided with an insulating support 14, and two side surfaces of the insulating support 14 at the supporting foot plate 12 are also respectively provided with a fireproof layer 15.

The shapes of the pole connecting hole 16 and the pressure relief hole 17 can be set according to the shapes of the pole and the explosion relief valve.

The insulating support 14 of this embodiment is a plastic support attached to the side of the busbar body 1, and the fireproof layer 15 is mica paper attached to the plastic support. The mica paper can play an insulating role and also can play a fireproof role.

As shown in fig. 1, the supporting leg 13 of this embodiment is a metal or insulating member welded to one end of the supporting plate 11, and the supporting leg plate 12 and the supporting plate 11 form a T-shaped structure; the metal piece is a bolt or a screw, and the insulating piece comprises structural adhesive. It is convenient to place the busbar body 1 in the battery pack case 3.

As shown in fig. 2, each group of pole connection holes 16 includes a positive pole connection hole and a negative pole connection hole arranged at an interval, and a pressure relief hole 17 is provided at an interval between the positive pole connection hole and the negative pole connection hole of each group of pole connection holes 16. The arrangement of the pressure relief hole can realize directional pressure relief of the battery core.

As shown in fig. 1, the supporting plate 11 of the present embodiment is arranged perpendicular to the leg plate 12; the busbar body 1 is an aluminum plate or a steel plate.

The multi-functional integrated busbar of this embodiment, the weight of bearing electric core stack body that can be fine can also and battery package casing between form pressure release channel, when electric core takes place thermal runaway, can be fine with thermal runaway gaseous from battery package bottom emission. The battery pack is safer and more compact, and the integration efficiency is higher.

As shown in fig. 3 to fig. 6, the present embodiment further provides a battery pack, which includes a plurality of the multifunctional integrated bus bars, and further includes a battery pack case 3 and a battery cell stacked body formed by stacking a plurality of battery cells 2, the battery cell stacked body is disposed in the battery pack case 3, the bus bar body 1 is further disposed on the inner side of the bottom of the battery pack case 3, the leg plate 12 of the bus bar body 1 is supported on the inner side of the bottom of the battery pack case 3 through the leg 13, and a pressure relief channel 32 is formed between the bus bar body 1 and the battery pack case 3; every electric core pile up body corresponds a busbar body 1, and the anodal post 21 and the negative pole post 22 of each electric core 2 of electric core pile up body weld respectively in a set of utmost point post connecting hole 16, and the valve that explodes that leaks of each electric core 2 of electric core pile up body corresponds with a pressure release hole 17 respectively and arranges. The battery pack of the embodiment is safer and more compact, and has higher integration efficiency.

As shown in fig. 4, a plurality of mica plates 33 are further disposed on the inner side surface of the bottom of the battery pack case 3 in the embodiment, one mica plate 33 is correspondingly disposed in each cell stack, and the leg plates 12 of the busbar body 1 are supported on the mica plates 33 through the legs 13.

As shown in fig. 5, a plurality of explosion-proof valves 31 are disposed on a side wall of the battery pack case 3 of this embodiment, and each of the pressure relief channels 32 corresponds to at least one of the explosion-proof valves 31.

A further preferable scheme of this embodiment is that a guide groove is provided on the inner side surface of the bottom of the battery pack case 3, a structural adhesive is provided in the guide groove, and the support leg 13 is provided in the guide groove. The guide groove is arranged, so that the supporting legs are convenient to position and install.

As shown in fig. 6, a first liquid cooling plate 34 and a second liquid cooling plate 35 are further disposed in the battery pack case 3 according to this embodiment, the first liquid cooling plate 34 is disposed perpendicular to the second liquid cooling plate 35, the first liquid cooling plate 34 is attached to one side of the plurality of cell stacked bodies and is located at the top of the battery pack case 3, and the second liquid cooling plates 35 are disposed between the adjacent cell stacked bodies and on one side of the cell stacked body at the edge position.

The battery package of this embodiment, when electric core in the battery package takes place thermal runaway, thermal runaway gas can pass the busbar body and enter into the pressure release passageway in, and the explosion-proof valve 31 on the rethread battery package casing carries out directional blowout, because the utmost point post of electric core 2 arranges down, electric core 2 generally explodes from utmost point post position and spouts, explodes from the bottom of battery package promptly.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship 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 therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment 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 are not necessarily intended to 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. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims

1. The multifunctional integrated bus bar is characterized by comprising a bus bar body, wherein the bus bar body comprises a support plate and support foot plates, the two ends of the same side of the support plate are respectively and integrally connected with the support foot plates, and the support plate and the support foot plates form a U-shaped bus bar body; a plurality of groups of pole connecting holes and a plurality of pressure relief holes are formed in the supporting plate and are respectively arranged at intervals along the direction of openings at two ends of the busbar body; the one end that the stabilizer blade back of the body leaves the backup pad is equipped with the stabilizer blade, two sides of busbar body are equipped with insulating support respectively, two sides of insulating support of foot board department still are equipped with the flame retardant coating respectively.

2. The multifunctional integrated busbar according to claim 1, wherein the insulating support is a plastic support attached to a side surface of the busbar body, and the fire-resistant layer is mica paper attached to the plastic support.

3. The multifunctional integrated bus bar of claim 1, wherein the support leg is a metal or insulating member welded to one end of the support plate, and the support leg and the support plate form a T-shaped structure; the metal piece is a bolt or a screw.

4. The multifunctional integrated bus bar according to claim 1, wherein each group of pole connecting holes comprises a positive pole connecting hole and a negative pole connecting hole which are arranged at intervals, and the interval between the positive pole connecting hole and the negative pole connecting hole of each group of pole connecting holes is provided with a pressure relief hole.

5. The multifunctional integrated bus bar of claim 1, wherein the support plate is arranged perpendicular to the leg plate; the busbar body is an aluminum plate or a steel plate.

6. A battery pack, comprising the multifunctional integrated bus bar of any one of claims 1 to 5, further comprising a battery pack case and a cell stack body formed by stacking a plurality of cells, wherein the cell stack body is disposed in the battery pack case, the bus bar body is further disposed on the inner side of the bottom of the battery pack case, the leg plate of the bus bar body is supported on the inner side of the bottom of the battery pack case through a leg, and a pressure relief channel is formed between the bus bar body and the battery pack case; every electric core stack body corresponds a busbar body, and the anodal post and the negative pole post of each electric core of electric core stack body weld respectively in a set of utmost point post connecting hole, and the explosion venting valve of each electric core of electric core stack body corresponds with a pressure release hole respectively and arranges.

7. The battery pack according to claim 6, wherein a plurality of mica plates are further disposed on the inner side surface of the bottom of the battery pack case, one mica plate is disposed in each cell stack, and the leg plates of the busbar body are supported on the mica plates through the legs.

8. The battery pack according to claim 6, wherein a plurality of explosion-proof valves are disposed on a side wall of the battery pack case, and each of the pressure relief passages corresponds to at least one of the explosion-proof valves.

9. The battery pack according to claim 6, wherein a guide groove is formed on the inner side surface of the bottom of the battery pack shell, structural adhesive is arranged in the guide groove, and the support legs are arranged in the guide groove.

10. The battery pack according to claim 6, wherein the battery pack case is further provided with a first liquid cooling plate and a second liquid cooling plate, the first liquid cooling plate and the second liquid cooling plate are arranged vertically, the first liquid cooling plate is attached to one side of the plurality of cell stacks and is located at the top of the battery pack case, and the second liquid cooling plates are arranged between adjacent cell stacks and on one side of the cell stacks at the edge position.