CN220692240U - Upper cover structure and battery module that battery module was used - Google Patents

Abstract

The utility model provides an upper cover structure for a battery module and the battery module, wherein the structure of the upper cover structure for the battery module comprises a fire-resistant layer, and the fire-resistant layer covers the upper part of a module body; an upper cover plate arranged between the refractory layer and the upper part of the module body, wherein the size of the upper cover plate is smaller than that of the upper part of the module body; and the connecting layer is arranged between the fire-resistant layer and the upper cover plate, the upper surface of the connecting layer is connected with the fire-resistant layer, a first part of the lower surface of the connecting layer is connected with the upper cover plate, and a second part of the lower surface of the connecting layer is connected with the upper part of the module body. The upper cover structure for the battery module and the battery module can solve the problem that the cost of the upper cover structure of the existing battery module is high.

Description

Upper cover structure and battery module that battery module was used

Technical Field

The application relates to the technical field of battery modules, in particular to an upper cover structure for a battery module and the battery module.

Background

With the increasing severity of the current energy crisis, the new energy industry is also widely concerned and rapidly developed. In particular, new energy automobiles are increasingly focused on, and the comprehensive performance of electric automobiles is also focused on by various consumer groups, so that the cost and weight of power batteries become important factors for restricting the development of the electric automobiles.

The upper cover PC (polycarbonate) sheet of the battery module and the high-temperature refractory material on the surface of the battery module are important components for forming the battery module and the battery pack. In the prior art, the upper cover PC sheet and the surface high-temperature refractory material of the battery module are generally divided into two independent parts, and two working procedures are needed in the production and processing process, so that the personnel cost and the working procedure cost are increased, the overall production speed of the battery pack is slowed down, and finally the cost of the battery pack is increased. In addition, the upper cover PC sheet of the battery module in the prior art covers the whole battery module, so that the whole package quality energy density of the battery package is reduced, and the manufacturing cost of the upper cover PC sheet of the battery module is increased.

Disclosure of Invention

Accordingly, an object of the present application is to provide an upper cover structure for a battery module and a battery module, which are used for solving the problem of higher cost of the upper cover structure of the existing battery module.

According to a first aspect of the present utility model, there is provided an upper cover structure for a battery module, wherein the upper cover structure for a battery module includes: the fire-resistant layer covers the upper part of the module body; an upper cover plate arranged between the refractory layer and the upper part of the module body, wherein the size of the upper cover plate is smaller than that of the upper part of the module body; and the connecting layer is arranged between the fire-resistant layer and the upper cover plate, the upper surface of the connecting layer is connected with the fire-resistant layer, a first part of the lower surface of the connecting layer is connected with the upper cover plate, and a second part of the lower surface of the connecting layer is connected with the upper part of the module body.

Preferably, the refractory layer comprises: the first avoiding hole is arranged in the center of the refractory layer; and two second avoidance holes, wherein the two second avoidance holes are respectively arranged at two ends of the first avoidance hole in the first direction, and the two second avoidance holes are arranged at intervals with the first avoidance hole.

Preferably, the centers of the two ends of the refractory layer in the length direction are provided with identification holes, the upper cover plate is arranged in the center of the refractory layer, and two identification parts are arranged at positions corresponding to the two identification holes.

Preferably, the connection layer is a double-sided adhesive layer, a first portion of a lower surface of the connection layer is located at a center in a width direction of the connection layer, and a second portion of the lower surface of the connection layer is located at both sides in the width direction of the first portion of the lower surface of the connection layer.

Preferably, the first avoidance hole is a rectangular hole with an arc-shaped bulge formed at one end in the length direction, the first avoidance hole is arranged along the length direction of the refractory layer, and the two second avoidance holes are kidney-shaped holes.

Preferably, the length of the refractory layer is equal to the length of the upper portion of the module body, and the width of the refractory layer is equal to the width of the upper portion of the module body.

Preferably, the length of the upper cover plate is equal to the length of the upper portion of the module body, and the width of the upper cover plate is smaller than the width of the upper portion of the module body.

Preferably, the size and shape of the connection layer is the same as the size and shape of the refractory layer.

According to a second aspect of the present utility model, there is provided a battery module, wherein the battery module includes a module body and an upper cover structure for the battery module as described above, the upper cover structure for the battery module being mounted at an upper portion of the module body.

Preferably, the end of the module body in the length direction is provided with an insert part protruding outwards and an output stage protection part, the refractory layer is provided with a first extension protection part at a position corresponding to the insert part, and the refractory layer is provided with a second extension protection part at a position corresponding to the output stage protection part.

According to the upper cover structure for the battery module and the battery module, the upper cover structure for the battery module comprises the fire-resistant layer, the upper cover plate and the connecting layer, the fire-resistant layer covers the upper portion of the module body, the upper cover plate is arranged between the fire-resistant layer and the upper portion of the module body, the connecting layer is connected with the fire-resistant layer and the upper cover plate, the fire-resistant layer and the upper cover plate are integrated into a whole, the number of procedures of the upper cover structure for the battery module in production and processing is reduced, and the size of the upper cover plate is smaller than that of the upper portion of the module body, so that the second portion of the lower surface of the connecting layer can be connected with the upper portion of the module body, the fire-resistant layer and the upper cover plate are fixed to the module body, and meanwhile materials of the upper cover plate are saved.

In order to make the above objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered limiting the scope, and that other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic view of a top cover structure for a battery module and a structure of the battery module according to the present utility model.

Fig. 2 is a schematic view of an upper cover structure for a battery module and an angle of the battery module according to the present utility model.

Fig. 3 is a schematic view of an angle of an upper cover structure for a battery module according to the present utility model.

Reference numerals: 1-a refractory layer; 11-a first escape aperture; 12-a second avoidance hole; 13-identifying holes; 14-round holes; 101-a first extension shield; 102-a second extension shield; 2-upper cover plate; 21-an identification part; a 3-connection layer; 4-module body; 41-an insert part; 42-an output stage guard; 43-clip.

Detailed Description

The following detailed description is provided to assist the reader in obtaining a thorough understanding of the methods, apparatus, and/or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatuses, and/or systems described herein will be apparent after an understanding of the present disclosure. For example, the order of operations described herein is merely an example, and is not limited to the order set forth herein, but rather, obvious variations may be made upon an understanding of the present disclosure, other than operations that must occur in a specific order. In addition, descriptions of features known in the art may be omitted for the sake of clarity and conciseness.

The features described herein may be embodied in different forms and should not be construed as limited to the examples described herein. Rather, the examples described herein have been provided solely to illustrate some of the many possible ways of implementing the methods, devices, and/or systems described herein that will be apparent after a review of the disclosure of the present application.

In the entire specification, when an element (such as a layer, region or substrate) is described as being "on", "connected to", "bonded to", "over" or "covering" another element, it may be directly "on", "connected to", "bonded to", "over" or "covering" another element or there may be one or more other elements interposed therebetween. In contrast, when an element is referred to as being "directly on," directly connected to, "or" directly coupled to, "another element, directly on," or "directly covering" the other element, there may be no other element intervening therebetween.

As used herein, the term "and/or" includes any one of the listed items of interest and any combination of any two or more.

Although terms such as "first," "second," and "third" may be used herein to describe various elements, components, regions, layers or sections, these elements, components, regions, layers or sections should not be limited by these terms. Rather, these terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, a first member, component, region, layer or section discussed in examples described herein could also be termed a second member, component, region, layer or section without departing from the teachings of the examples.

For ease of description, spatially relative terms such as "above … …," "upper," "below … …," and "lower" may be used herein to describe one element's relationship to another element as illustrated in the figures. Such 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 the device in the figures is turned over, elements described as "above" or "upper" relative to another element would then be oriented "below" or "lower" relative to the other element. Thus, the term "above … …" includes both orientations "above … …" and "below … …" depending on the spatial orientation of the device. The device may also be otherwise positioned (e.g., rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

The terminology used herein is for the purpose of describing various examples only and is not intended to be limiting of the disclosure. Singular forms also are intended to include plural forms unless the context clearly indicates otherwise. The terms "comprises," "comprising," and "having" are intended to specify the presence of stated features, integers, operations, elements, and/or groups thereof, but do not preclude the presence or addition of one or more other features, integers, operations, elements, and/or groups thereof.

Variations from the shapes of the illustrations as a result, of manufacturing techniques and/or tolerances, are to be expected. Accordingly, the examples described herein are not limited to the particular shapes shown in the drawings, but include changes in shapes that occur during manufacture.

The features of the examples described herein may be combined in various ways that will be apparent after an understanding of the disclosure of the present application. Further, while the examples described herein have a variety of configurations, other configurations are possible as will be apparent after an understanding of the present disclosure.

As shown in fig. 1 to 3, according to a first aspect of the present utility model, there is provided an upper cover structure for a battery module, which includes a flame retardant coating 1, an upper cover sheet 2, and a connection layer 3.

In the following description, a specific structure of the above-described assembly of the upper cover structure for the battery module and the connection relationship of the above-described assembly will be specifically described with reference to fig. 1 to 3.

As shown in fig. 1 to 3, in an embodiment, a refractory layer 1 may cover an upper portion of the module body 4, and the refractory layer 1 may be made of a high temperature resistant refractory material, which protects the module body 4 from high temperature and flame. The upper covering sheet 2 may be disposed between the refractory layer 1 and the upper portion of the module body 4, and the size of the upper covering sheet 2 may be smaller than the size of the upper portion of the module body 4. The tie layer 3 can set up between flame retardant coating 1 and upper cover plate 2, and the upper surface of tie layer 3 can be connected with flame retardant coating 1, and the first part of the lower surface of tie layer 3 can be connected with upper cover plate 2, and then is in the same place flame retardant coating 1 and upper cover plate 2 integration to reduce the upper cover structure that the battery module was used is in the number of steps in production and processing. The second portion of the lower surface of the connection layer 3 may be connected to the upper portion of the module body 4, so that the upper cover structure for the battery module is fixed to the upper portion of the module body 4.

Preferably, as shown in fig. 1 to 3, in an embodiment, the refractory layer 1 may be made of ceramic silicone rubber, and the shape of the refractory layer 1 and the shape of the upper portion of the module body 4 may be substantially rectangular. And the length of flame retardant coating 1 can be equal with the length on the upper portion of module body 4, and the width of flame retardant coating 1 can be equal with the width on the upper portion of module body 4 for flame retardant coating 1 can cover the upper portion at module body 4 betterly, in order to play thermal-insulated fire prevention's effect.

Preferably, as shown in fig. 1 to 3, in an embodiment, the refractory layer 1 may include a first relief hole 11 and a second relief hole 12. Wherein, the first hole 11 of dodging can be seted up at the central authorities of flame retardant coating 1, and the first hole 11 of dodging can be formed with arc convex rectangular hole for the one end on length direction, the first hole 11 of dodging sets up along the length direction of flame retardant coating 1 (i.e. the length direction of the first hole 11 of dodging is parallel with the length of flame retardant coating 1). The number of the second avoiding holes 12 may be two, and the two second avoiding holes 12 may be respectively disposed at two ends of the first avoiding hole 11 in the first direction (the first direction may be the length direction of the refractory layer 1). Preferably, the two second avoidance holes 12 may be kidney-shaped holes, the two second avoidance holes 12 may be all arranged along the length direction of the refractory layer 1 (i.e., the length direction of the two second avoidance holes 12 is parallel to the length of the refractory layer 1), and the two second avoidance holes 12 may be all arranged at intervals with the first avoidance hole 11.

Preferably, as shown in fig. 1 to 3, in an embodiment, the upper cover sheet 2 may be an upper cover PC (polycarbonate) sheet of the battery module. The upper cover plate 2 may be disposed at the center of the refractory layer 1, the length of the upper cover plate 2 may be equal to the length of the upper portion of the module body 4, and the width of the upper cover plate 2 may be smaller than the width of the upper portion of the module body 4, the upper cover plate 2 being disposed concentrically with the refractory layer 1. Furthermore, the upper covering sheet 2 may preferably be formed by die cutting. The existing upper cover PC sheet is usually formed by adopting plastic suction, and because of different fixing structures of the upper cover PC sheets of different battery modules, each new upper cover PC sheet needs different plastic suction models, so that the manufacturing cost of the upper cover PC sheet is higher. The upper cover plate 2 of the upper cover structure for the battery module can be formed by die cutting, so that the manufacturing cost is reduced.

Further, preferably, as shown in fig. 1 to 3, in an embodiment, the centers of both ends of the refractory layer 1 in the length direction may be provided with identification holes 13. Specifically, the marking hole 13 may be a kidney-shaped hole, and the marking hole 13 may be spaced apart from the second avoiding hole 12. The upper cover 2 may be provided with two identification portions 21 at positions corresponding to the two identification holes 13, and the size of the identification portions 21 may be smaller than the size of the identification holes 13 so that the identification portions 21 can be exposed from the identification holes 13. Preferably, the contents of the two identification parts 21 may be positive and negative identifications, respectively, so that the operator can easily distinguish the positive and negative ends of the battery module. In addition, the middle portion of the upper covering sheet 2 may be exposed from the first escape holes 11 and the second escape holes 12 of the refractory layer 1. The first avoidance holes 11 and the second avoidance holes 12 of the refractory layer 1 can be used for avoiding the battery cell explosion-proof valve, and the upper cover plate 2 can protect the battery cell explosion-proof valve.

Furthermore, preferably, as shown in fig. 1 to 3, in an embodiment, circular holes 14 may be further formed at intervals between the two second escape holes 12 and the first escape hole 11 of the refractory layer 1, and the two circular holes 14 may be equal in size. The surface of the upper cover plate 2 may be formed with two circular holes 14 having the same size, and the two circular holes 14 of the upper cover plate 2 may be disposed in one-to-one correspondence with the two circular holes 14 of the refractory layer 1. The upper part of the module body 4 may be formed with a cylindrical clip 43 at a position corresponding to the circular hole 14, and the diameter of the clip 43 may be equal to the diameter of the circular hole 14. The two clamping pieces 43 of the module body 4 can sequentially pass through the two round holes 14 of the upper cover plate 2 and the two round holes 14 of the refractory layer 1, so as to position the refractory layer 1 and the upper cover plate 2.

Preferably, as shown in fig. 1 to 3, in an embodiment, the connection layer 3 may be a double-sided adhesive layer. The size and shape of the connection layer 3 may be the same as the size and shape of the refractory layer 1, i.e. the connection layer 3 may be provided with openings of the same shape and size at the location where the refractory layer 1 is provided with openings. The upper surface of the connection layer 3 may be bonded to the bottom surface of the refractory layer 1. A first portion of the lower surface of the attachment layer 3 may be located at the center in the width direction of the attachment layer 3, i.e., a portion of the middle of the attachment layer 3 where no opening is provided may be bonded to the upper covering sheet 2. The second portion of the lower surface of the connection layer 3 may be located at both sides of the first portion of the lower surface of the connection layer 3 in the width direction, and the second portion of the lower surface of the connection layer 3 may be bonded to the upper portion of the module body 4, so that the refractory layer 1 and the upper cover sheet 2 may be fixed to the upper portion of the module body 4.

Further, as shown in fig. 1 and 2, according to a second aspect of the present utility model, there is provided a battery module including a module body 4 and an upper cover structure for a battery module as described above, the upper cover structure for a battery module being mounted at an upper portion of the module body 4.

Preferably, as shown in fig. 1 to 3, in an embodiment, the end portion in the length direction of the module body 4 may be provided with an insert portion 41 and an output stage guard portion 42 protruding outward. The plug-in portion 41 may be a position of the battery module where the low voltage plug-in is mounted, and the top of the output stage protecting portion 42 may be higher than the top surface of the upper cover structure for the battery module. Further, preferably, the refractory layer 1 may be formed with a first extension protection portion 101 at a position corresponding to the insert portion 41, the first extension protection portion 101 may be rectangular in shape, and the first extension protection portion 101 may extend along the length direction of the module body 4 and further cover the top of the insert portion 41 to protect the insert portion 41. The refractory layer 1 may be formed with a second extension protection part 102 at a position corresponding to the output stage protection part 42, where the second extension protection part 102 may be rectangular, and the second extension protection part 102 may extend along the length direction of the module body 4, so that an end of the second extension protection part 102 may be connected with an upper portion of the covering insert part 41, thereby realizing a partial structure of protecting the covering insert part 41. Preferably, the number of the second extension prevention portions 102 may be plural to correspond to the plural covering insert portions 41.

In the use, the flame retardant coating 1 and the upper cover plate 2 of the upper cover structure for the battery module are integrated together through the connecting layer 3, so that the assembly steps of the upper cover structure for the battery module are saved, and the process cost is reduced. In addition, through the lightweight design to upper cover plate 2, make the size of upper cover plate 2 be less than the size of the upper portion of module body 4, and then reduced the weight and the material that use of upper cover plate 2, thereby reduced weight and the cost of upper cover structure for the battery module, finally reach the purpose of reducing total weight and the cost of battery module.

Finally, it should be noted that: the foregoing examples are merely specific embodiments of the present application, and are not intended to limit the scope of the present application, but the present application is not limited thereto, and those skilled in the art will appreciate that while the foregoing examples are described in detail, the present application is not limited thereto. Any person skilled in the art may modify or easily conceive of the technical solution described in the foregoing embodiments, or make equivalent substitutions for some of the technical features within the technical scope of the disclosure of the present application; such modifications, changes or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application, and are intended to be included in the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (10)

1. The utility model provides an upper cover structure that battery module was used, battery module includes the module body, its characterized in that, upper cover structure that battery module was used includes:

the fire-resistant layer covers the upper part of the module body;

an upper cover plate arranged between the refractory layer and the upper part of the module body, wherein the size of the upper cover plate is smaller than that of the upper part of the module body; and

the connecting layer is arranged between the fire-resistant layer and the upper cover plate, the upper surface of the connecting layer is connected with the fire-resistant layer, a first part of the lower surface of the connecting layer is connected with the upper cover plate, and a second part of the lower surface of the connecting layer is connected with the upper part of the module body.

2. The upper cover structure for a battery module according to claim 1, wherein the refractory layer comprises:

the first avoiding hole is arranged in the center of the refractory layer; and

the two second avoidance holes are respectively arranged at two ends of the first avoidance hole in the first direction, and the two second avoidance holes are arranged at intervals with the first avoidance hole.

3. The upper cover structure for a battery module according to claim 2, wherein the center of both ends of the refractory layer in the length direction is provided with identification holes, the upper cover plate is provided in the center of the refractory layer, and the upper cover plate is provided with two identification parts at positions corresponding to the two identification holes.

4. The upper cover structure for a battery module according to claim 3, wherein the connection layer is a double-sided adhesive layer, a first portion of the lower surface of the connection layer is located at the center in the width direction of the connection layer, and a second portion of the lower surface of the connection layer is located at both sides in the width direction of the first portion of the lower surface of the connection layer.

5. The upper cover structure for a battery module according to claim 2, wherein the first avoiding hole is a rectangular hole with an arc-shaped protrusion formed at one end in the length direction, the first avoiding hole is arranged along the length direction of the refractory layer, and the two second avoiding holes are kidney-shaped holes.

6. The upper cover structure for a battery module according to claim 1, wherein the refractory layer has a length equal to the length of the upper portion of the module body, and the refractory layer has a width equal to the width of the upper portion of the module body.

7. The upper cover structure for a battery module according to claim 6, wherein the upper cover plate has a length equal to that of the upper part of the module body, and the upper cover plate has a width smaller than that of the upper part of the module body.

8. The upper cover structure for a battery module according to any one of claims 1 to 7, wherein the size and shape of the connection layer are the same as those of the refractory layer.

9. A battery module, comprising a module body and the upper cover structure for the battery module according to any one of claims 1 to 8, wherein the upper cover structure for the battery module is mounted at the upper part of the module body.

10. The battery module according to claim 9, wherein an end portion in the length direction of the module body is provided with an insert portion and an output stage protection portion protruding outward, the refractory layer is formed with a first extension protection portion at a position corresponding to the insert portion, and the refractory layer is formed with a second extension protection portion at a position corresponding to the output stage protection portion.