CN221126147U

CN221126147U - Slave board fixing structure and battery pack

Info

Publication number: CN221126147U
Application number: CN202322712501.XU
Authority: CN
Inventors: 黎辉; 蔡海盛; 强心双; 蔡建军; 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: 2023-10-09
Filing date: 2023-10-09
Publication date: 2024-06-11
Anticipated expiration: 2033-10-09

Abstract

The application relates to the technical field of battery packs, in particular to a secondary plate fixing structure and a battery pack. The slave plate fixing structure includes a mounting beam, a slave plate, a protective cover, and an insulating support. The protective cover is formed by bending a plastic plate, and is bent to form a containing cavity with an opening at one end, and the slave plate is contained and limited in the containing cavity through the opening. The mounting beam is arranged on one side of the protective cover close to the opening, and the insulating support piece penetrates through the slave plate and the protective cover and is in insulating connection with the mounting beam. The slave plate fixing structure and the battery pack provided by the application solve the problem of higher protection cost of the existing slave plate.

Description

Slave board fixing structure and battery pack

Technical Field

The application relates to the technical field of battery packs, in particular to a secondary plate fixing structure and a battery pack.

Background

As the power core of the new energy automobile, the safety of the battery pack is particularly important, so each module in the battery pack is generally configured with a corresponding slave board for monitoring the voltage and the temperature of the battery cell.

In the prior art, the slave board is generally in the form of a PCB circuit board, and needs to be installed near the module, and a protection member having functions of insulation, dust prevention, heat insulation, and the like needs to be provided on the slave board. The protection piece generally comprises an injection molding plastic support and a corresponding injection molding plastic cover, parts are more, weight is heavier, occupied space is more, and the processing of the protection piece requires a corresponding die, so that the die opening cost is high, the universality is poor, and the overall cost is increased.

Disclosure of utility model

Based on this, it is necessary to provide a slave plate fixing structure and a battery pack to solve the problem of higher protection cost of the existing slave plate.

The application provides a slave plate fixing structure which comprises an installation beam, a slave plate, a protective cover and an insulating support piece, wherein the protective cover is formed by bending a plastic plate, the protective cover is bent to form a containing cavity with an opening at one end, and the slave plate is contained and limited in the containing cavity through the opening; the mounting beam is arranged on one side, close to the opening, of the protective cover, and the insulating support piece penetrates through the slave plate, the protective cover and is connected with the mounting beam in an insulating mode.

In one embodiment, the protective cover comprises a main plate and a plurality of side plates, one end of each side plate is connected with the main plate, and the other end of each side plate is bent towards a direction away from the main plate and extends to the surface of the slave plate close to the mounting beam; the insulating support piece penetrates through the slave plate and the lap joint between the adjacent side plates to fixedly connect the protective cover and the slave plate.

In one embodiment, the insulating support member comprises a fixing member and a connecting member, wherein one end of the fixing member is fixedly arranged on the slave plate, and the other end of the fixing member penetrates through the slave plate and protrudes out of the surface, close to the mounting beam, of the slave plate and is in threaded connection with the connecting member; wherein, the connecting piece is kept away from the one end of mounting is connected the installation roof beam.

In one embodiment, the connecting piece comprises an insulating sleeve and a locking column, one end of the insulating sleeve is connected with the mounting beam, the other end of the insulating sleeve is provided with a fixing hole, and the insulating sleeve is sleeved on the periphery of the locking column through the fixing hole and is in clamping fit with the locking column along the periphery Xiang Guding of the connecting piece; the locking column is provided with a locking hole in threaded connection with the fixing piece.

In one embodiment, one of the outer periphery of the locking post and the inner wall of the fixing hole is provided with a protrusion, the other is correspondingly provided with a groove, and the protrusion is clamped in the groove to prevent the locking post from rotating along the circumferential direction of the locking post.

In one embodiment, the number of the protrusions and the grooves is multiple, the protrusions and the grooves are all distributed at intervals along the circumferential direction of the connecting piece, and each protrusion is arranged in one-to-one correspondence with each groove.

In one embodiment, the insulating sleeve is an epoxy member.

In one embodiment, the number of the insulating supports is plural, and plural insulating supports are disposed at intervals on the slave plate.

In one embodiment, the slave plate fixing structure further includes an insulating sheet attached to and connected to a surface of the mounting beam.

The application also provides a battery pack comprising the slave plate fixing structure according to any one of the above embodiments.

Compared with the prior art, the secondary plate fixing structure and the battery pack provided by the application have the advantages that the protective cover is formed by bending the plastic plate, and the injection mold can be omitted, so that the manufacturing cost is effectively saved. And, the protective cover is buckled to form the holding chamber and spacing slave plate, prevents to take place to break away from between protective cover and the slave plate, improves the security of slave plate. That is, the application can perform better insulation, dust prevention and heat insulation functions only through one structure of the protective cover, compared with the prior art, the number of parts is less, the occupied space is correspondingly reduced, the whole weight is greatly reduced, and the application is beneficial to the weight reduction of the vehicle. Simultaneously, utilize insulating support piece to connect from board and protecting cover as an organic wholely to be fixed in the installation roof beam with it, can guarantee from the insulating properties between board and the installation roof beam, improve the security of battery package.

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 diagram of a protective cover according to an embodiment of the present application;

FIG. 4 is a cross-sectional view of a slave plate securing structure according to one embodiment of the present application;

FIG. 5 is a schematic structural view of a connector according to an embodiment of the present application;

Fig. 6 is a schematic structural view of a slave plate according to an embodiment of the present application.

The symbols in the drawings are as follows:

100. A battery pack; 10. a slave plate fixing structure; 11. mounting a beam; 12. a slave plate; 13. a protective cover; 1301. a receiving chamber; 1302. an opening; 131. a main board; 132. a side plate; 14. an insulating support; 141. a fixing member; 142. a connecting piece; 1421. an insulating sleeve; 1421a, fixing holes; 1422. locking the column; 1422a, locking holes; 1423. a protrusion; 1424. a groove; 20. and a battery module.

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. 1-3, in order to solve the problem of high protection cost of the prior slave board, the present application provides a slave board fixing structure 10, wherein the slave board fixing structure 10 is installed in a battery pack 100. The slave plate fixing structure 10 includes a mounting beam 11, a slave plate 12, a shield cover 13, and an insulating support 14. Wherein the slave plate 12 is used to monitor state information of the battery modules 20 in the battery pack 100.

Further, as shown in fig. 2 and 3, the protective cover 13 is formed by bending a plastic plate, and the protective cover 13 is bent to form a receiving cavity 1301 having an opening 1302 at one end, and the protective cover is received from the plate 12 through the opening 1302 and is limited to the receiving cavity 1301. The mounting beam 11 is disposed on a side of the protective cover 13 near the opening 1302, and the insulating support 14 is inserted through the slave plate 12 and the protective cover 13 and is connected to the mounting beam 11 in an insulating manner.

The protective cover 13 is formed by bending a plastic plate, and an injection mold can be omitted, so that the manufacturing cost is effectively saved. The protective cover 13 is bent to form the accommodating cavity 1301 and limit the slave plate 12, so that separation between the protective cover 13 and the slave plate 12 is prevented, and safety of the slave plate 12 is improved. That is, the application can perform better insulation, dust prevention and heat insulation functions only by one structure of the protective cover 13, the number of parts is smaller than that of the prior art, the occupied space is correspondingly reduced, the whole weight is greatly reduced, and the application is beneficial to the weight reduction of the vehicle. Meanwhile, the secondary plate 12 and the protective cover 13 are integrally connected by the insulating support 14 and fixed to the mounting beam 11, so that the insulating performance between the secondary plate 12 and the mounting beam 11 can be ensured, and the safety of the battery pack 100 can be improved.

In one embodiment, the protecting cover 13 includes a main plate 131 and a plurality of side plates 132, one end of each side plate 132 is connected to the main plate 131, and the other end is bent in a direction away from the main plate 131 and extends from the plate 12 to a surface close to the mounting beam 11. Wherein, the adjacent side plates 132 are at least partially overlapped, and the insulating support 14 is penetrated through the overlap between the slave plate 12 and the adjacent side plates 132 to fixedly connect the protective cover 13 and the slave plate 12.

In this way, a fixed connection of the slave plate 12 and the protective cover 13 can be achieved. Moreover, it is easy to understand that the main board 131 and the side board 132 are integrally bent and formed, so that the connection strength of the main board 131 and the side board 132 can be ensured, the assembly of the protective cover 13 and the slave board 12 is facilitated, and the overall assembly efficiency is improved.

In one embodiment, the slave plate fixing structure 10 further includes an insulating sheet (not shown) attached and connected to the surface of the mounting beam 11. In this way, the mounting beam 11 has a good insulating property, and can realize separation of the battery module 20 and the slave plate 12, further improving the safety of the battery pack 100.

The insulating sheet may be made of the same plastic material as the protective cover 13, such as PC or PP.

In one embodiment, as shown in fig. 4 to 6, the insulating support 14 includes a fixing member 141 and a connecting member 142, wherein one end of the fixing member 141 is fixedly arranged on the slave plate 12, and the other end of the fixing member is penetrated through the slave plate 12 and protrudes from the surface of the slave plate 12 near the mounting beam 11, and is in threaded connection with the connecting member 142. Wherein, the end of the connecting piece 142 away from the fixing piece 141 is connected with the mounting beam 11.

During assembly, the fixing member 141 can be connected to the slave plate 12, and then the slave plate 12 is placed in the accommodating cavity 1301, so that the fixing member 141 penetrates through a corresponding opening in the protective cover 13 to extend out of the accommodating cavity 1301, and therefore, the mutual positioning between the protective cover 13 and the slave plate 12 is realized, and the matching connection of the fixing member 141 and the connecting member 142 is facilitated, so that the installation difficulty can be reduced.

In an embodiment, as shown in fig. 5, the connecting piece 142 includes an insulating sleeve 1421 and a locking post 1422, one end of the insulating sleeve 1421 is connected to the mounting beam 11, the other end is provided with a fixing hole 1421a, and the insulating sleeve 1421 is sleeved on the circumferential side of the locking post 1422 through the fixing hole 1421a and is fixedly clamped and matched with the locking post 1422 along the circumferential direction of the connecting piece 142. The locking post 1422 is provided with a locking hole 1422a screwed with the fixing member 141.

The insulating sleeve 1421 is used to ensure the insulating property when the connecting member 142 is connected to the mounting beam 11, and the locking post 1422 is disposed so as to be in threaded engagement with the fixing member 141. Further, the locking post 1422 is engaged with the fixing hole 1421a of the insulating sleeve 1421, so that the locking post can be prevented from rotating relative to the fixing member 141 during screw-fitting, and the connection reliability can be improved.

Specifically, in one embodiment, the insulating sleeve 1421 is an epoxy member with better insulation.

In an embodiment, one of the outer periphery of the locking post 1422 and the inner wall of the fixing hole 1421a is provided with a protrusion 1423, the other is correspondingly provided with a groove 1424, and the protrusion 1423 is blocked in the groove 1424 to prevent the locking post 1422 from rotating along the circumferential direction thereof.

In this way, by connecting the projection 1423 and the groove 1424, a rotation-stopping fit of the lock post 1422 and the insulating sleeve 1421 can be achieved.

Further, in an embodiment, the number of the protrusions 1423 and the grooves 1424 is plural, the protrusions 1423 and the grooves 1424 are all arranged at intervals along the circumferential direction of the connecting member 142, and each protrusion 1423 is disposed in one-to-one correspondence with each groove 1424.

In this way, the connection strength between the lock post 1422 and the insulating bush 1421 can be further improved, so that the rotation-stopping strength of the insulating bush 1421 to the lock post 1422 can be improved.

In one embodiment, as shown in fig. 6, the number of insulating supports 14 is plural, and the plural insulating supports 14 are disposed at intervals on the slave plate 12. In this way, a firm connection from the plate 12 and the mounting beam 11 can be achieved.

The present application also provides a battery pack 100, the battery pack 100 including the battery module 20 and the slave plate fixing structure 10 according to any one of the above embodiments.

The number of the battery modules 20 and the slave plates 12 is plural, and each battery module 20 is disposed in one-to-one correspondence with each slave plate 12. And, each slave plate 12 is provided with a corresponding protective cover 13 structure for protection.

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. A slave plate fixing structure is characterized by comprising a mounting beam (11), a slave plate (12), a protective cover (13) and an insulating support (14),

The protective cover (13) is formed by bending a plastic plate, the protective cover (13) is bent to form a containing cavity (1301) with an opening (1302) at one end, and the slave plate (12) is contained in the containing cavity (1301) through the opening (1302);

The mounting beam (11) is arranged on one side, close to the opening (1302), of the protective cover (13), and the insulating support piece (14) penetrates through the slave plate (12) and the protective cover (13) and is connected with the mounting beam (11) in an insulating mode.

2. The slave board fixing structure according to claim 1, wherein the protective cover (13) includes a main board (131) and a plurality of side boards (132), one end of the side boards (132) is connected to the main board (131), and the other end is bent in a direction away from the main board (131) and extends to a surface of the slave board (12) close to the mounting beam (11);

Wherein, adjacent the side plates (132) are at least partially overlapped, and the insulating support piece (14) penetrates through the lap joint between the slave plate (12) and the adjacent side plates (132) so as to fixedly connect the protective cover (13) and the slave plate (12).

3. The slave plate fixing structure according to claim 1, wherein the insulating support member (14) comprises a fixing member (141) and a connecting member (142), one end of the fixing member (141) is fixedly arranged on the slave plate (12), and the other end of the fixing member is inserted through the slave plate (12) and protrudes from the surface of the slave plate (12) close to the mounting beam (11) and is in threaded connection with the connecting member (142);

wherein, the one end of the connecting piece (142) far away from the fixing piece (141) is connected with the mounting beam (11).

4. A slave plate fixing structure according to claim 3, wherein the connecting member (142) comprises an insulating sleeve (1421) and a locking column (1422), one end of the insulating sleeve (1421) is connected with the mounting beam (11), a fixing hole (1421 a) is formed in the other end of the insulating sleeve, and the insulating sleeve (1421) is sleeved on the periphery of the locking column (1422) through the fixing hole (1421 a) and is fixedly clamped and matched with the locking column (1422) along the circumferential direction of the connecting member (142);

wherein, locking hole (1422 a) that is connected with the mounting (141) screw thread is seted up to locking post (1422).

5. The slave plate fixing structure according to claim 4, wherein one of the outer periphery of the locking post (1422) and the inner wall of the fixing hole (1421 a) is provided with a protrusion (1423), the other is correspondingly provided with a groove (1424), and the protrusion (1423) is clamped in the groove (1424) to prevent the locking post (1422) from rotating along the circumferential direction thereof.

6. The slave plate fixing structure according to claim 5, wherein the number of the protrusions (1423) and the grooves (1424) is plural, the plurality of the protrusions (1423) and the plurality of the grooves (1424) are each arranged at intervals along the circumferential direction of the connecting member (142), and each of the protrusions (1423) is provided in one-to-one correspondence with each of the grooves (1424).

7. The slave plate fixing structure according to claim 4, wherein the insulating sleeve (1421) is an epoxy member.

8. The slave plate fixing structure according to claim 1, wherein the number of the insulating supports (14) is plural, and a plurality of the insulating supports (14) are provided at intervals to the slave plate (12).

9. The slave plate fixing structure according to claim 1, further comprising an insulating sheet attached to and connected to a surface of the mounting beam (11).

10. A battery pack comprising the slave plate fixing structure according to any one of claims 1 to 9.