CN221126148U

CN221126148U - Battery pack and new energy automobile

Info

Publication number: CN221126148U
Application number: CN202322781374.9U
Authority: CN
Inventors: 宁帅; 苏立擂
Original assignee: Zhejiang Zero Run Technology Co Ltd; Zhejiang Lingxiao Energy Technology Co Ltd
Current assignee: Zhejiang Zero Run Technology Co Ltd; Zhejiang Lingxiao Energy Technology Co Ltd
Priority date: 2023-10-16
Filing date: 2023-10-16
Publication date: 2024-06-11
Anticipated expiration: 2033-10-16

Abstract

The application relates to the technical field of battery packs, in particular to a battery pack and a new energy automobile. The battery pack comprises a box body, a plurality of cross beams, a plurality of battery modules and a plurality of electric connecting pieces. The box body is provided with a containing cavity, the plurality of cross beams are arranged in the containing cavity at intervals and are connected with the box body in an insulating mode, and the containing cavity is separated by the plurality of cross beams to form a plurality of mounting grooves. Each battery module and each mounting groove are arranged in a one-to-one correspondence manner and are respectively mounted in the corresponding mounting grooves. The cross beam has conductivity, one end of the electric connector is electrically connected with the output pole of the battery module, and the other end is electrically connected with the side wall of the cross beam, so that the adjacent battery modules can be connected in series through the electric connector and the cross beam. The projection of each electric connecting piece along the depth direction of the mounting groove is positioned in the corresponding mounting groove. The battery pack and the new energy automobile provided by the application solve the problems of higher weight and cost of the battery pack caused by longer length of the conductive bars connected with the battery module in the prior art.

Description

Battery pack and new energy automobile

Technical Field

The application relates to the technical field of battery packs, in particular to a battery pack and a new energy automobile.

Background

As the power core of new energy automobile, the inside of battery package is equipped with a plurality of battery modules generally, and realizes high-pressure connection through the conducting bar between a plurality of battery modules to satisfy the output needs of battery package.

In traditional battery package structure, the crossbeam between adjacent battery module can be passed over to the conducting bar in order to realize series connection between the adjacent battery module, and conducting bar overall length is longer, not only leads to weight and cost increase for whole package energy density reduces, and the conducting bar still easily interferes with other structures (e.g. crossbeam etc.) in the course of the work moreover, thereby leads to the conducting bar to bump the damage, influences the security of battery package. If the plastic member or the like is provided for fixing the conductive bars, the weight and manufacturing cost of the battery pack are further increased.

Disclosure of utility model

Based on this, it is necessary to provide a battery pack and a new energy automobile to solve the problems of high weight and high cost of the battery pack caused by the longer length of the current conductive bars connected with the battery module.

The application provides a battery pack, which comprises a box body, a plurality of cross beams, a plurality of battery modules and a plurality of electric connecting pieces, wherein the cross beams are arranged on the box body; the box body is provided with a containing cavity, the cross beams are arranged in the containing cavity at intervals and are connected with the box body in an insulating mode, the cross beams divide the containing cavity to form a plurality of mounting grooves, and each battery module and each mounting groove are arranged in a one-to-one correspondence mode and are respectively arranged in the corresponding mounting grooves; the cross beam has conductivity, one end of the electric connector is electrically connected with the output pole of the battery module, and the other end of the electric connector is electrically connected with the side wall of the cross beam, so that the adjacent battery modules can be connected in series through the electric connector and the cross beam; and the projection of each electric connecting piece along the depth direction of the mounting groove is positioned in the corresponding mounting groove.

In one embodiment, the plurality of battery modules have the same structure.

In one embodiment, the output electrode of each battery module comprises a battery positive electrode and a battery negative electrode, the battery positive electrode and the battery negative electrode are arranged at two opposite ends of the battery module, and the directions of the battery positive electrodes and the battery negative electrodes of the battery modules are the same; wherein, the battery positive electrode and the battery negative electrode are both connected with the electric connecting piece.

In one embodiment, the battery anode and the battery cathode are both disposed near the cross beam, and the electrical connection member connects the battery anode or the battery cathode with the corresponding adjacent cross beam, respectively.

In one embodiment, the electrical connector includes a first connection portion, a second connection portion, and a third connection portion connecting the first connection portion and the second connection portion; one end of the first connecting part, which is far away from the third connecting part, is connected with the output electrode of the battery module, and the side surface of the second connecting part is attached to and connected with the side wall of the cross beam.

In one embodiment, the first connecting portion, the second connecting portion and the third connecting portion are integrally bent and molded.

In one embodiment, the electrical connector is a copper bar or an aluminum bar.

In one embodiment, the battery pack further comprises fixing members, wherein the fixing members are arranged at two opposite ends of the cross beam, one end of each fixing member is connected to the end portion of the cross beam, and the other end of each fixing member is connected to the box body.

In one embodiment, the fixing member is provided with a U-shaped groove, and the end portion of the cross beam is inserted into the U-shaped groove and fixedly clamped with the inner wall of the U-shaped groove.

The application also provides a new energy automobile, which comprises the battery pack according to any one of the embodiments.

Compared with the prior art, the battery pack and the new energy automobile provided by the application have the advantages that the cross beam can not only play a role in improving the integral strength of the battery pack box body, but also can serve as a carrier of a high-voltage loop in the battery pack. And, electrically conduct through the crossbeam, and the projection of electric connector is at the setting in corresponding mounting groove, and the electric connector need not the output pole of adjacent battery module, but can only set up in corresponding mounting groove, realizes the indirect electricity of adjacent battery module through the crossbeam and links. So, shortened the extension length of electric connector greatly for electric connector's weight and cost are reduced, and still avoided current conducting bar to cross the collision problem that exists when the crossbeam, so can cancel spare parts that are used for fixing such as working of plastics, not only further reduced manufacturing cost, the security is also higher. Meanwhile, the conductive bars are connected to the side walls of the cross beam, so that occupation of the upper space of the cross beam can be reduced, the volume of the battery pack can be reduced, and the space utilization rate of the battery pack can be improved. And the height of the cross beam can be correspondingly increased so as to further improve the structural strength of the battery pack box body.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments or the conventional techniques of the present application, the drawings required for the descriptions of the embodiments or the conventional techniques will be briefly described below, and it is apparent that the drawings in the following descriptions are only some embodiments of the present application, and other drawings may be obtained according to the drawings without inventive effort for those skilled in the art.

Fig. 1 is a schematic structural view of a battery pack according to an embodiment of the present application;

fig. 2 is a schematic view of a portion of a battery pack according to an embodiment of the present application;

fig. 3 is a schematic structural diagram of a case according to an embodiment of the present application.

The symbols in the drawings are as follows:

100. A battery pack; 10. a case; 11. a receiving chamber; 111. a mounting groove; 20. a cross beam; 30. a battery module; 31. a battery positive electrode; 32. a battery negative electrode; 40. an electrical connection; 41. a first connection portion; 42. a second connecting portion; 43. a third connecting portion; 50. a fixing member; 51. u-shaped groove.

Detailed Description

In order that the above objects, features and advantages of the application will be readily understood, a more particular description of the application will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. The present application may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the application, whereby the application is not limited to the specific embodiments disclosed below.

It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When a component is considered to be "connected" to another component, it can be directly connected to the other component or intervening components may also be present. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and the like are used in the description of the present application for the purpose of illustration only and do not represent the only embodiment.

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

In the present application, unless expressly stated or limited otherwise, a first feature "up" or "down" on a second feature may be that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through intermedial media. Moreover, a first feature "above," "over" and "on" a second feature may be a first feature directly above or obliquely above the second feature, or simply indicate that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely under the second feature, or simply indicating that the first feature is less level than the second feature.

Unless defined otherwise, all technical and scientific terms used in the specification of the present application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and/or" as used in the description of the present application includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1, in order to solve the problem of high weight and cost of a battery pack caused by longer length of a conductive bar connected to a battery module in the prior art, the present application provides a battery pack 100.

Referring to fig. 1-3, a battery pack 100 provided by the present application includes a case 10, a plurality of cross members 20, a plurality of battery modules 30, and a plurality of electrical connectors 40. The box 10 is provided with a containing cavity 11, a plurality of cross beams 20 are arranged in the containing cavity 11 at intervals and are connected with the box 10 in an insulating mode, and the containing cavity 11 is separated by the plurality of cross beams 20 to form a plurality of mounting grooves 111. Each battery module 30 and each mounting groove 111 are disposed in a one-to-one correspondence, and are mounted in the corresponding mounting groove 111, respectively. The cross member 20 has conductivity, one end of the electrical connector 40 is electrically connected to the output electrode of the battery module 30, and the other end is electrically connected to the side wall of the cross member 20, so that adjacent battery modules 30 can be connected in series with the cross member 20 through the electrical connector 40. Wherein, the projection of each electric connector 40 along the depth direction of the mounting groove 111 is located in the corresponding mounting groove 111.

It will be appreciated that the cross member 20 of the present application serves to increase the overall strength of the housing 10 of the battery pack 100 and also serves as a carrier for the high voltage circuit within the battery pack 100. And, the electric connection member 40 is not directly connected to the output electrode of the adjacent battery module 30 through the arrangement of the cross member 20, which is electrically conductive, and the projection of the electric connection member 40 in the corresponding mounting groove 111, but can be disposed only in the corresponding mounting groove 111, thereby achieving the indirect electric connection of the adjacent battery module 30 through the cross member 20. In this way, the extension length of the electric connector 40 is greatly shortened, so that the weight and cost of the electric connector 40 are reduced, and the problem of collision when the existing conductive bars pass through the cross beam is avoided, so that parts such as plastic parts used for fixing can be omitted, the production cost is further reduced, and the safety is higher.

Meanwhile, the present application can reduce the occupation of the upper space of the cross beam 20 by connecting the conductive bars to the side walls of the cross beam 20, thereby being beneficial to reducing the volume of the battery pack 100 and improving the space utilization of the battery pack 100. And, the height of the cross member 20 can be increased accordingly to further improve the structural strength of the case 10 of the battery pack 100.

Although the cross member 20 is charged, the cross member 20 is connected to the case 10 in an insulating manner, so that the case 10 is prevented from being charged, and the safety of the battery pack 100 is improved. For example, an insulating layer may be disposed on the surface of the beam 20, or other parts may be used to realize insulating connection between the beam 20 and the box 10, and may be reasonably disposed according to actual needs.

Generally, the output electrode of each battery module 30 includes a battery positive electrode 31 and a battery negative electrode 32, the battery positive electrode 31 and the battery negative electrode 32 are disposed at opposite ends of the battery module 30, and the battery positive electrode 31 and the battery negative electrode 32 are connected with an electrical connector 40 for connection and conduction. In addition, in the traditional battery pack structure, in order to reduce the length of the conducting bars as much as possible, at least two kinds of battery modules are generally arranged, and the output poles of the two kinds of battery modules are different, so that when the two kinds of battery modules are arranged on the box body, the battery anode of one kind of battery module and the battery cathode of the other kind of battery module are arranged on the same side of the box body and are close to each other, so that the conducting bars are connected, and meanwhile, the development cost of the battery modules is increased to a certain extent due to the arrangement of the two kinds of battery modules.

Because the cross beam 20 can conduct electricity, the electric connector 40 can be connected to the cross beam 20 nearby by selecting a proper position, and therefore, the adjacent battery modules 30 can be electrically connected through the cross beam 20 no matter how the positions of the battery positive electrode 31 and the battery negative electrode 32 of the battery modules 30 are changed.

Based on this, in an embodiment of the present application, the structures of the plurality of battery modules 30 are the same, so that the development and manufacturing costs of the battery modules 30 are greatly reduced, and the energy efficiency of the battery pack 100 is improved.

Specifically, in one embodiment, the directions of the battery positive electrodes 31 and the battery negative electrodes 32 of the plurality of battery modules 30 are the same. That is, the plurality of battery modules 30 can be mounted to the case 10 in the same arrangement, improving the mounting efficiency and the mounting convenience of the battery modules 30.

Further, in an embodiment, the battery positive electrode 31 and the battery negative electrode 32 are both disposed near the beam 20, and the electrical connector 40 connects the battery positive electrode 31 or the battery negative electrode 32 with the corresponding adjacent beam 20, respectively.

In this way, the length of the electrical connector 40 can be further reduced, and the overall weight of the battery pack 100 can be reduced, thereby achieving weight saving.

In one embodiment, as shown in fig. 2, the electrical connector 40 includes a first connection portion 41, a second connection portion 42, and a third connection portion 43 connecting the first connection portion 41 and the second connection portion 42. One end of the first connection part 41, which is far from the third connection part 43, is connected to the output electrode of the battery module 30, and the side surface of the second connection part 42 is attached to and connected to the side wall of the cross member 20.

In this way, the electrical connector 40 has a simple structure, and can achieve electrical connection between the battery module 30 and the adjacent cross member 20. In addition, the bonding connection between the second connection portion 42 and the side wall of the beam 20 can further improve the connection strength between the electrical connector 40 and the beam 20, and ensure the connection stability of the electrical connector 40.

In an embodiment, the first connecting portion 41, the second connecting portion 42 and the third connecting portion 43 are integrally bent and molded. Thus, the electric connector 40 can be formed easily, and the processing efficiency of the electric connector 40 can be improved.

In one embodiment, the electrical connector 40 is a copper or aluminum bar. Thus, the conductive material has better conductivity.

In one embodiment, as shown in fig. 3, the battery pack 100 further includes fixing members 50, the fixing members 50 are disposed at opposite ends of the cross member 20, and one end of the fixing member 50 is connected to an end of the cross member 20 and the other end is connected to the case 10.

In this way, the cross beam 20 can be firmly connected with the case 10 through the fixing member 50, thereby effectively improving the connection reliability of the cross beam 20.

Further, in an embodiment, the fixing member 50 is provided with a U-shaped groove 51, and an end portion of the beam 20 is inserted into the U-shaped groove 51 and fixedly clamped with an inner wall of the U-shaped groove 51.

The fixing piece 50 can increase the contact area with the cross beam 20 by arranging the U-shaped groove 51, and is convenient to be matched with the cross beam 20 better, so that the connection firmness degree of the cross beam 20 and the fixing piece 50 is further improved, the probability of shaking the cross beam 20 is reduced, the box body 10 is prevented from being electrified due to collision damage of the cross beam 20, and the safety of the battery pack 100 is greatly improved. In addition, the U-shaped groove 51 also has a certain positioning effect, so that the cross beam 20 is convenient to install, and the overall assembly efficiency of the battery pack 100 is improved.

The application also provides a new energy automobile, which comprises the battery pack 100 according to any one of the embodiments.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of the application should be determined from the following claims.

Claims

1. The battery pack is characterized by comprising a box body (10), a plurality of cross beams (20), a plurality of battery modules (30) and a plurality of electric connectors (40);

the battery pack comprises a box body (10), a plurality of cross beams (20) and a plurality of battery modules, wherein the box body (10) is provided with a containing cavity (11), the cross beams (20) are arranged in the containing cavity (11) at intervals and are connected with the box body (10) in an insulating mode, the containing cavity (11) is divided by the cross beams (20) to form a plurality of mounting grooves (111), and each battery module (30) and each mounting groove (111) are arranged in a one-to-one correspondence mode and are respectively arranged in the corresponding mounting groove (111);

The cross beam (20) has conductivity, one end of the electric connector (40) is electrically connected with the output pole of the battery module (30), and the other end is electrically connected with the side wall of the cross beam (20), so that the adjacent battery modules (30) can be connected in series through the electric connector (40) and the cross beam (20);

Wherein, the projection of each electric connector (40) along the depth direction of the mounting groove (111) is positioned in the corresponding mounting groove (111).

2. The battery pack according to claim 1, wherein the plurality of battery modules (30) are all identical in structure.

3. The battery pack according to claim 2, wherein the output electrode of each of the battery modules (30) includes a battery positive electrode (31) and a battery negative electrode (32), the battery positive electrode (31) and the battery negative electrode (32) are provided at opposite ends of the battery module (30), and the directions of the battery positive electrodes (31) and the battery negative electrodes (32) of the plurality of battery modules (30) are the same;

Wherein the battery positive electrode (31) and the battery negative electrode (32) are both connected with the electric connector (40).

4. A battery pack according to claim 3, wherein the battery positive electrode (31) and the battery negative electrode (32) are both arranged close to the cross beam (20), and the electrical connection (40) connects the battery positive electrode (31) or the battery negative electrode (32) with the corresponding adjacent cross beam (20), respectively.

5. The battery pack according to claim 1, wherein the electrical connector (40) includes a first connection portion (41), a second connection portion (42), and a third connection portion (43) connecting the first connection portion (41) and the second connection portion (42);

One end of the first connecting part (41) far away from the third connecting part (43) is connected to an output pole of the battery module (30), and the side face of the second connecting part (42) is attached to and connected to the side wall of the cross beam (20).

6. The battery pack according to claim 5, wherein the first connecting portion (41), the second connecting portion (42), and the third connecting portion (43) are integrally bent molded pieces.

7. The battery pack according to claim 1, wherein the electrical connection (40) is a copper bar or an aluminum bar.

8. The battery pack according to claim 1, further comprising fixing members (50), the fixing members (50) being provided at opposite ends of the cross member (20), and one end of the fixing members (50) being connected to an end of the cross member (20) and the other end being connected to the case (10).

9. The battery pack according to claim 8, wherein the fixing member (50) is provided with a U-shaped groove (51), and an end portion of the cross beam (20) is inserted into the U-shaped groove (51) and fixedly clamped with an inner wall of the U-shaped groove (51).

10. A new energy vehicle comprising a battery pack according to any one of claims 1 to 9.