CN217158459U

CN217158459U - Battery pack and shell thereof

Info

Publication number: CN217158459U
Application number: CN202220551973.4U
Authority: CN
Inventors: 罗培文; 陈伟东; 陈小源
Original assignee: Sunwoda Electric Vehicle Battery Co Ltd
Current assignee: Xinwangda Power Technology Co ltd
Priority date: 2022-03-10
Filing date: 2022-03-10
Publication date: 2022-08-09
Anticipated expiration: 2032-03-10

Abstract

The utility model provides a shell and battery package of battery package. Wherein, the shell of battery package includes: a bottom case having an accommodation space; the upper cover is arranged on the bottom box and shields the accommodating space; the bottom box comprises a first plate body located at the bottom of the bottom box, a conducting circuit is arranged on the first plate body, and a first connecting terminal electrically connected with a first end of the conducting circuit and a second connecting terminal connected with a second end of the conducting circuit are arranged on the bottom box. Use the technical scheme of the utility model the battery package that can solve among the correlation technique effectively lacks safety inspection device's problem.

Description

Battery pack and shell thereof

Technical Field

The utility model relates to a power battery field particularly, relates to a shell and battery package of battery package.

Background

With the increasing maturity of new energy technology and market, electric vehicles gradually get wide acceptance and selection of people, and the share in the automobile market is continuously improved. The battery system is one of the most critical parts of the electric automobile, and the battery system comprises a battery pack, wherein the battery pack comprises a shell and a battery module arranged in the shell, and the shell of the battery pack can play a role in structural support and sealing protection and is of great importance to the safety and reliability of the battery system.

The battery pack is generally arranged on an automobile chassis, and because the ground clearance of the battery pack is small, the battery pack is easy to support the bottom in the running process of an electric automobile, the situations of deformation, even breakage and the like of the shell of the battery pack occur, serious influence is brought to the safety and reliability of an internal battery module, even serious accidents such as fire can be caused, and the safety detection of the battery pack is very important. However, currently, there is no good monitoring means to detect whether the battery pack is damaged, and most of them are to overhaul the battery system during regular maintenance of the electric vehicle. However, when the bottom is supported, a driver is difficult to judge the damage condition of the box body, and in most cases, the driver cannot go to a 4S shop for maintenance in time or even does not realize the support of the bottom, so that the battery pack can be seriously deformed or broken to continue running, and the condition has serious potential safety hazard.

SUMMERY OF THE UTILITY MODEL

A primary object of the present invention is to provide a battery pack and a battery pack for solving the problem of the battery pack in the related art lacking a safety detection device.

In order to achieve the above object, according to an aspect of the present invention, there is provided a battery pack case including: a bottom case having an accommodation space; the upper cover is arranged on the bottom box and shields the accommodating space; the bottom box comprises a first plate body located at the bottom of the bottom box, a conducting circuit is arranged on the first plate body, and a first connecting terminal electrically connected with a first end of the conducting circuit and a second connecting terminal connected with a second end of the conducting circuit are arranged on the bottom box.

Furthermore, an insulating layer is arranged between the conductive circuit and the first plate body; or the first plate body is made of insulating materials.

Further, the conductive circuit is formed by coating conductive paint or conductive adhesive.

Furthermore, the first plate body comprises a first side edge and a second side edge which are oppositely arranged, and the conductive circuit is bent from the first side edge to the second side edge; or the conducting circuit is arranged around from the central point to the edge of the first plate body.

Furtherly, the under casing still including setting up in the second plate body of first plate body top and setting up in the bounding wall of first plate body and second plate body circumference direction, second plate body and bounding wall enclose into accommodation space, have installation clearance between first plate body and the second plate body, the shell of battery package still includes: and the pressure sensor is arranged in the mounting gap.

Further, the lower surface of the pressure sensor abuts against the first plate body, and the upper surface of the pressure sensor abuts against the second plate body.

Further, the pressure sensor includes a plurality of pressure sensors, and the plurality of pressure sensors are uniformly arranged in the mounting gap.

Further, the pressure sensor comprises a sensor body and a lead electrically connected with the sensor body, a third connecting terminal is further arranged on the bottom case, and the free ends of the leads are electrically connected with the third connecting terminal.

Furthermore, the lead is adhered to the first plate body.

According to the utility model discloses an on the other hand provides a battery package, include: the shell is the shell; and the battery module is arranged in the accommodating space of the shell.

Use the technical scheme of the utility model, the shell of battery package includes the under casing, and the bottom of under casing is provided with first plate body, and the battery package when the installation, guarantees that first plate body is located the bottommost of whole battery package. The first plate body is provided with a conductive circuit, and the conductive circuit can be connected with other electrical components to form a passage. In the in-process that the car went, in case the battery package meets and holds in the palm the end or receive situations such as striking and when leading to first plate body damaged, set up and can form at first plate body conducting wire and open circuit, lead to the electrical components outage with the conducting wire intercommunication, can judge from this that the battery package has received comparatively serious damage, the driver can in time take measures to maintain the battery package, avoids the battery package to take place serious incident.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a three-dimensional structure of an embodiment of a partial structure of a case of a battery pack according to the present invention;

fig. 2 illustrates a schematic structural view of a first plate of a housing of the battery pack of fig. 1; and

fig. 3 shows a schematic perspective view of an embodiment of a battery pack according to the present invention.

Wherein the figures include the following reference numerals:

1. an accommodating space; 10. a bottom box; 11. a first plate body; 111. a first side edge; 112. a second side edge; 12. a conductive circuit; 13. a second plate body; 14. enclosing plates; 20. an upper cover; 30. a pressure sensor; 40. a housing; 50. a battery module is provided.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Unless specifically stated otherwise, the relative arrangement of parts and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

As shown in fig. 1 to 3, the present application provides an outer case of a battery pack, and an embodiment of the outer case of the battery pack includes a bottom case 10 and an upper cover 20. The bottom case 10 is internally provided with an accommodating space 1; the upper cover 20 is arranged on the bottom case 10 and shields the accommodating space 1; the bottom case 10 includes a first board 11 located at the bottom of the bottom case 10, a conductive circuit 12 is disposed on the first board 11, and a first connection terminal electrically connected to a first end of the conductive circuit 12 and a second connection terminal connected to a second end of the conductive circuit 12 are disposed on the bottom case 10.

By adopting the technical scheme of the embodiment, the shell of the battery pack comprises the bottom case 10, the first plate body 11 is arranged at the bottom of the bottom case 10, and when the battery pack is installed, the first plate body 11 is ensured to be positioned at the bottommost part of the whole battery pack. The first board 11 is provided with a conductive circuit 12, and the conductive circuit 12 can be connected with other electrical components to form a passage. In the in-process that the car went, in case the battery package meets and holds in the palm the end or receive situations such as striking and when leading to first plate body 11 damaged, set up and can form at first plate body 11 conducting circuit 12 and open circuit, lead to the electrical components outage with conducting circuit 12 intercommunication, can judge from this that the battery package has received comparatively serious damage, the driver can in time take measures to maintain the battery package, avoids the battery package to take place serious incident.

As shown in fig. 2, in the present embodiment, an insulating layer is disposed between the conductive trace 12 and the first board 11. In the above structure, if the first board 11 itself is made of a metal material, an insulating layer needs to be disposed between the first board 11 and the conductive circuit to ensure that the conductive circuit 12 can be opened when the first board 11 is damaged.

Of course, in other embodiments, the first board 11 may also be made of an insulating material, and an insulating layer may be disposed on the first board 11 to protect the first board 11. Or an insulating layer is not required to be arranged on the first plate body 11, so that the effect of saving cost is achieved.

As shown in fig. 2, in the present embodiment, the conductive traces 12 are formed by coating conductive paint or conductive paste. The structure enables the conductive circuit 12 to be easily broken along with the damage of the first plate body 11, and the accuracy of judging the damage of the battery pack is improved. If adopt the wire as the conducting wire, because the insulating layer is wrapped up back to the wire outward, therefore intensity is great, difficult causes the circuit break, leads to easily that the conducting wire still is the situation of route even first plate body 11 takes place the breakage for the driver is difficult to notice the damaged condition of battery package.

As shown in fig. 2, in the present embodiment, the first board body 11 includes a first side 111 and a second side 112 disposed oppositely, and the conductive trace 12 is bent in a direction from the first side 111 to the second side 112. In the above structure, the more densely the conductive circuits 12 are arranged, the more accurately the detection of the damage of the battery pack is. The structure can increase the density of the conductive circuits 12, thereby improving the accuracy of the damage detection of the battery pack.

Of course, in other embodiments, the conductive trace 12 may be disposed around the first board 11 from the center point to the edge.

At the in-process that the car went, first plate body 11 probably can not produce the damage after the battery package received the striking, still can cause harmful effects to the structure of battery package inside, for further promotion to the safety inspection effect of battery package, this application has set up pressure sensor in the shell of battery package, and the pressure value that accessible pressure sensor measured judges whether the striking dynamics can cause the influence to the battery package. Specifically, as shown in fig. 1 and fig. 3, in this embodiment, the bottom case 10 further includes a second plate 13 disposed above the first plate 11 and a surrounding plate 14 disposed in the circumferential direction of the first plate 11 and the second plate 13, the second plate 13 and the surrounding plate 14 surround to form an accommodating space 1, a mounting gap is provided between the first plate 11 and the second plate 13, and the battery pack case further includes: and the pressure sensor 30, wherein the pressure sensor 30 is arranged in the mounting gap. In the above structure, the reading of the pressure sensor 30 and the on-off state of the conductive circuit 12 can be used together to judge the state of the bottom of the battery pack. Specifically, when the pressure detected by the pressure sensor 30 is less than the threshold value, it indicates that the battery pack is in a normal state and does not need to be overhauled. When the pressure detected by the pressure sensor 30 is greater than the threshold value, but the conductive trace 12 is still in the conductive state, it indicates that the bottom of the battery pack may be deformed, but not broken. When the pressure detected by the pressure sensor 30 is greater than the threshold value and the conductive line 12 is open, this indicates that the bottom of the battery pack may be deformed and have ruptured. Above-mentioned structure can in time remind the driver when battery package takes place deformation or breaks, reduces the operation risk of vehicle.

As shown in fig. 2, in the present embodiment, the pressure sensor 30 includes a plurality of pressure sensors 30, and the plurality of pressure sensors 30 are uniformly arranged in the mounting gap. In the above configuration, the more the number of the pressure sensors 30 is, the more densely the pressure sensors are arranged in the battery pack, the more accurately the state of the bottom of the battery pack is detected. The structure can improve the accuracy of detecting the bottom state of the battery pack.

Specifically, as shown in fig. 2, in the present embodiment, the pressure sensor 30 includes a sensor body and a lead electrically connected to the sensor body, and the bottom case 10 is further provided with a third connection terminal, and the free ends of the plurality of leads are electrically connected to the third connection terminal. The above structure facilitates the installation of the pressure sensor 30. It should be noted that the lead of the pressure sensor 30 is bonded to the first plate 11.

In the present embodiment, the lower surface of the pressure sensor 30 abuts against the first plate 11, and the upper surface of the pressure sensor 30 abuts against the second plate 13. The above structure can improve the accuracy of the detection result of the pressure sensor 30.

As shown in fig. 3, the present application also provides a battery pack, and an embodiment of the battery pack of the present application includes: a housing 40 and a battery module 50. Wherein, the housing 40 is the housing described above; the battery module 50 is disposed in the receiving space 1 of the housing 40. Since the case 40 of the battery pack of the present application has an advantage of being able to detect the safety state of the battery pack, the battery pack having the same also has the above-described advantages.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be interpreted as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …", "above … …", "above … …", "above", and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and if not stated otherwise, the terms have no special meaning, and therefore, the scope of the present invention should not be construed as being limited.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A battery pack housing, comprising:

a bottom case (10) having an accommodation space (1);

an upper cover (20) which is arranged on the bottom case (10) and shields the accommodating space (1);

the bottom box (10) comprises a first plate body (11) located at the bottom of the bottom box (10), a conductive circuit (12) is arranged on the first plate body (11), and a first connecting terminal electrically connected with a first end of the conductive circuit (12) and a second connecting terminal electrically connected with a second end of the conductive circuit (12) are arranged on the bottom box (10).

2. The battery pack case of claim 1,

an insulating layer is arranged between the conducting circuit (12) and the first plate body (11); or

The first plate body (11) is made of an insulating material.

3. The battery pack case according to claim 1, wherein the conductive line (12) is formed by coating conductive paint or conductive paste.

4. The battery pack case of claim 1,

the first board body (11) comprises a first side edge (111) and a second side edge (112) which are oppositely arranged, and the conductive circuit (12) is bent in the direction from the first side edge (111) to the second side edge (112); or

The conductive circuit (12) is arranged around from the center point to the edge of the first board body (11).

5. The battery pack case according to any one of claims 1 to 4, wherein the bottom case (10) further comprises a second plate body (13) disposed above the first plate body (11) and a surrounding plate (14) disposed in a circumferential direction of the first plate body (11) and the second plate body (13), the second plate body (13) and the surrounding plate (14) surround the accommodating space (1), and a mounting gap is provided between the first plate body (11) and the second plate body (13), and the battery pack case further comprises:

a pressure sensor (30), the pressure sensor (30) disposed within the mounting gap.

6. The battery pack case according to claim 5, wherein a lower surface of the pressure sensor (30) abuts against the first plate body (11), and an upper surface of the pressure sensor (30) abuts against the second plate body (13).

7. The battery pack case according to claim 5, wherein the pressure sensor (30) includes a plurality of pressure sensors (30), and the plurality of pressure sensors (30) are uniformly arranged in the mounting gap.

8. The battery pack case according to claim 7, wherein the pressure sensor (30) includes a sensor body and a lead wire electrically connected to the sensor body, and a third connection terminal is further provided on the bottom case (10), and a plurality of free ends of the lead wire are electrically connected to the third connection terminal.

9. The battery pack case according to claim 8, wherein the lead is bonded to the first plate body (11).

10. A battery pack, comprising:

a housing (40), characterized in that the housing (40) is a housing according to any one of claims 1 to 9;

a battery module (50) disposed in the accommodating space (1) of the housing (40).