Battery pack

Abstract

The utility model provides a battery pack and relates to the field of battery pack structures. The battery pack is provided with a shell which is provided with a containing cavity, and a reinforcing part and a supporting part are arranged in the containing cavity; the battery cell module is located in the containing cavity, and the supporting part is attached to the bottom of the battery cell module; and the liquid cooling plate is positioned at the bottom of the battery cell module, and an avoiding part corresponding to the supporting part is formed on the liquid cooling plate. The structural stability of the shell can be improved through the reinforcing part and the supporting part, namely, the impact resistance of the shell can be improved, so that the possibility that the battery module is damaged and the like can be effectively reduced under the impact working condition. And avoiding parts corresponding to the supporting parts are formed on the liquid cooling plate, so that the compactness and layout rationality of the overall structure of the battery pack can be ensured.

Description

Technical Field

[0001] The present application relates to the field of battery pack structures, and in particular to a battery pack. Background Art

[0002] As an important component of new energy vehicles, the stability of the battery pack structure affects its safety during use. However, the structural strength of existing battery packs is still relatively low. When the battery pack encounters an impact, the battery module is easily damaged. Therefore, how to further improve the stability of the battery pack structure to protect the battery module under impact has become an urgent problem to be solved. Utility Model Content

[0003] In view of this, the purpose of the present application is to provide a battery pack to solve the problem that the existing battery pack has low structural strength and is difficult to protect the battery module under impact conditions.

[0004] According to the above purpose, the utility model provides a battery pack, wherein the battery pack is provided with:

[0005] The housing is formed with a receiving cavity, wherein a reinforcing portion and a supporting portion are arranged in the receiving cavity;

[0006] A battery cell module is located in the accommodating cavity, and the support portion is in contact with the bottom of the battery cell module; and

[0007] The liquid cooling plate is located at the bottom of the battery core module, and the liquid cooling plate is formed with an escape portion corresponding to the support portion.

[0008] Preferably, the shell includes a top cover, a surrounding plate and a bottom guard plate connected in sequence, the surrounding plate is formed into a rectangular parallelepiped frame structure, and the reinforcement part and the support part are both connected to the surrounding plate.

[0009] Preferably, the support portion comprises a plurality of support plates, and the two ends of the enclosure in the width direction are respectively connected to the support plates; each of the support plates extends along the length direction of the enclosure.

[0010] Preferably, the support plate is formed into a multi-step structure.

[0011] Preferably, along the width direction of the enclosure, the support plate is formed with a first inclined section, a first connecting section, a second inclined section and a second connecting section which are connected in sequence, the first inclined section is connected to the enclosure, and the second connecting section is fitted with the bottom of the battery cell module.

[0012] Preferably, the support plate and the enclosure plate are integrally formed.

[0013] Preferably, the avoidance portion includes a plurality of avoidance holes corresponding one-to-one to the support plates.

[0014] Preferably, the reinforcement portion includes a reinforcement beam, and two ends of the reinforcement beam in the extension direction are respectively connected to two ends of the enclosure plate in the width direction; along the length direction of the enclosure plate, the reinforcement beam is located in the middle section of the accommodating cavity.

[0015] Preferably, a plurality of recesses are formed on the top of the reinforcing beam close to the top cover, and the recesses are located at both ends and the middle of the reinforcing beam in the length direction.

[0016] Preferably, the reinforcing portion further includes a plurality of connecting pieces, and the connecting pieces are arranged on the top of the reinforcing beam so as to cover the openings of the corresponding recessed portions at the top of the reinforcing beam.

[0017] According to the battery pack of the utility model, a reinforcing portion and a supporting portion are arranged in the accommodating cavity of the shell, and when the battery cell module is arranged in the accommodating cavity, the supporting portion is fitted with the bottom of the battery cell module. In this way, the structural stability of the shell can be improved by the reinforcing portion and the supporting portion, that is, the impact resistance of the shell can be improved, thereby effectively reducing the possibility of damage to the battery module and the like during impact conditions.

[0018] Furthermore, the liquid cooling plate is formed with an avoidance portion corresponding to the above-mentioned support portion, so that the compactness and rationality of the layout of the overall structure of the battery pack can be ensured.

[0019] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 is an exploded view of a battery pack according to an embodiment of the utility model;

[0022] Figure 2 is a partial exploded view of a battery pack according to an embodiment of the utility model;

[0023] Figure 3 This is a first embodiment of the support member according to the embodiment of the utility model;

[0024] Figure 4 This is a second embodiment of the support member according to the embodiment of the utility model.

[0025] Icons: 10-top cover; 11-enclosure; 110-reinforcement beam; 111-recess; 112-connecting plate; 113-support plate; 1130-first inclined section; 1131-first connecting section; 1132-second inclined section; 1133-second connecting section; 1134-gap; 1135-weight-reducing hole; 12-bottom guard plate; 2-battery cell module; 3-liquid cooling plate; 30-avoidance hole; 31-reinforcement plate. DETAILED DESCRIPTION

[0026] The following specific embodiments are provided to help the reader obtain a comprehensive understanding of the methods, devices and / or systems described herein. However, after understanding the disclosure of the present application, various changes, modifications and equivalents of the methods, devices and / or systems described herein will be apparent. For example, the order of operations described herein is merely an example, and is not limited to the order set forth herein, but in addition to the operations that must occur in a particular order, changes that will be apparent after understanding the disclosure of the present application may be made. In addition, in order to improve clarity and brevity, descriptions of features known in the art may be omitted.

[0027] The features described herein may be implemented in different forms and should not be interpreted as being limited to the examples described herein. Rather, the examples described herein have been provided only to illustrate some of the many possible ways of implementing the methods, devices and / or systems described herein that will be apparent after understanding the disclosure of the present application.

[0028] Throughout the specification, when an element (such as a layer, a region, or a substrate) is described as being “on”, “connected to”, “bound to”, “over”, or “covering” another element, it may be directly “on”, “connected to”, “bound to”, “over”, or “covering” another element, or one or more other elements may be present between them. In contrast, when an element is described as being “directly on”, “directly connected to”, “directly bound to”, “directly over”, or “directly covering” another element, there may be no other elements present between them.

[0029] As used herein, the term "and / or" includes any one of the associated listed items and any combination of any two or more items.

[0030] Although terms such as "first," "second," and "third" may be used herein to describe various members, components, regions, layers, or portions, these members, components, regions, layers, or portions are not limited by these terms. Rather, these terms are only used to distinguish one member, component, region, layer, or portion from another member, component, region, layer, or portion. Therefore, without departing from the teachings of the examples described herein, the first member, component, region, layer, or portion referred to may also be referred to as the second member, component, region, layer, or portion.

[0031] For ease of description, spatial relational terms such as "above", "upper", "below", and "lower" may be used herein to describe the relationship of one element to another element as shown in the accompanying drawings. Such spatial relational terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. For example, if the device in the accompanying drawings is turned over, an element described as being "above" or "upper" relative to another element will subsequently be "below" or "lower" relative to the other element. Therefore, the term "above" includes both "above" and "below" orientations depending on the spatial orientation of the device. The device may also be positioned in other ways (e.g., rotated 90 degrees or in other orientations), and the spatial relational terms used herein will be interpreted accordingly.

[0032] The terms used herein are only used to describe various examples and are not used to limit the present disclosure. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms "include", "comprise" and "have" list the stated features, quantities, operations, components, elements and / or their combinations that exist, but do not exclude the existence or addition of one or more other features, quantities, operations, components, elements and / or their combinations.

[0033] Variations in the shapes shown in the drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the drawings but include variations in shapes that occur during manufacturing.

[0034] The features of the examples described herein may be combined in various ways that will be apparent after understanding the disclosure of the present application. In addition, although the examples described herein have various configurations, other configurations are possible as will be apparent after understanding the disclosure of the present application.

[0035] According to the utility model, a battery pack is provided, such as Figures 1 to 4As shown, the battery pack in this embodiment is provided with a shell, a battery module 2 and a liquid cooling plate 3. The shell forms a receiving cavity, and the battery module 2 and the liquid cooling plate 3 are both arranged in the receiving cavity; in addition, a reinforcing part and a supporting part are also arranged in the receiving cavity, which can effectively improve the structural strength and impact resistance of the shell, so as to protect the battery module. In the following, the specific structure of the above-mentioned parts of the battery pack according to the utility model will be described in detail.

[0036] In this embodiment, if Figure 1 As shown, the shell includes a top cover 10, a panel 11 and a bottom guard plate 12 connected in sequence. The panel 11 is formed into a rectangular parallelepiped frame structure, and the space enclosed by the three when connected is the accommodating cavity. It should be noted that the connection method between the top cover 10 and the bottom guard plate 12 and the panel 11 is not fixed. For example, in this embodiment, a threaded connection is used to achieve a stable connection between the three, or bonding, clamping and other connection methods can also be used. In addition, the specific shapes and specifications of the top cover 10, the panel 11 and the bottom guard plate 12 are not fixed. All three are common components in existing battery packs, as long as they can meet the use requirements of the battery pack.

[0037] Furthermore, the reinforcement part and the support part are both connected to the enclosure 11. Figure 2 As shown, the reinforcement portion includes a reinforcement beam 110, and the two ends of the reinforcement beam 110 in the extension direction are respectively connected to the two ends in the width direction of the enclosure 11, that is, the extension direction of the reinforcement beam 110 is the width direction of the enclosure 11 (i.e., the shell), and along the length direction of the enclosure 11, the reinforcement beam 110 is located in the middle section of the accommodating cavity. In this way, the reinforcement beam 110 can initially increase the structural strength and stability of the shell to avoid adverse effects such as damage to the battery module caused by external impact. It should be noted that there is no restriction on the specifications of the reinforcement beam 110, such as its thickness, and should be determined comprehensively according to actual conditions, such as the specifications of the battery cell module 2; in addition, the specific position of the reinforcement beam 110 in this embodiment is not fixed, as long as it can facilitate the realization of the above-mentioned technical effects. The reinforcement beam 110 can be connected to the enclosure 11 by welding.

[0038] Furthermore, the reinforcing beam 110 is formed with a plurality of recesses 111 near the top of the top cover 10, and the number, shape and specific position of the recesses 111 are not fixed. For example, the recesses 111 in this embodiment are formed into a U-shaped open structure, and are located at both ends and the middle of the length direction of the reinforcing beam 110. The reinforcing beam 110 (in the length direction) divides the accommodating cavity into two spaces, and the provision of the recesses 111 facilitates the insertion and connection of electrical connectors such as sampling lines.

[0039] In addition, the reinforcement part also includes a plurality of connecting pieces 112, which are arranged on the top of the reinforcement beam 110 to cover the opening of the corresponding recess 111 at the top of the reinforcement beam 110, that is, the connecting piece 112 can make up for the damage to the structural stability of the reinforcement beam 110 caused by the recess 111. In this embodiment, the connecting piece 112 is fixed to the reinforcement beam 110 by threaded connection, and corresponding threaded holes are respectively arranged at the top of the reinforcement beam 110 and the connecting piece 112, and then the corresponding screws can realize the stable connection between the two. Based on this, the shape of the connecting piece 112 should be adapted to the reinforcement beam 110, for example, the connecting piece 112 located in the middle of the reinforcement beam 110 is formed into a plate-like structure, and the connecting pieces 112 located at both ends of the reinforcement beam 110 are formed into a stepped Z-shaped structure.

[0040] In this embodiment, if Figures 2 to 4 As shown, the support portion includes a plurality of support plates 113, and both ends of the above-mentioned enclosure 11 in the width direction are respectively connected with support plates 113, and each support plate 113 extends along the length direction of the enclosure 11. Specifically, the support plates 113 in this embodiment are formed into a multi-step structure to ensure its support effect and connection strength. The structure of the support plates 113 in this embodiment is not fixed, such as Figure 3 to Figure 4 As shown, the support plate 113 is formed with a first inclined section 1130, a first connecting section 1131, a second inclined section 1132 and a second connecting section 1133 connected in sequence, the first inclined section 1130 is connected to the enclosure 11, and the second connecting section 1133 is fitted with the bottom of the battery module 2 to play a protective supporting effect on the battery module 2. In addition, in order to further increase the structural strength of the support plate 113, it is integrally formed with the enclosure 11, so that the rigidity of the support plate 113 can be improved by using the rigidity of the shell, thereby improving the supporting rigidity of the battery module.

[0041] In addition, in order to avoid interference with the reinforcing beam 110, each support plate 113 is also formed with a vacant portion 1134 corresponding to the reinforcing beam 110. However, it is not limited thereto, and two support plates 113 may be respectively provided at both ends of the width direction of the enclosure 11, and the two support plates 113 are respectively located on both sides of the extending direction of the reinforcing beam 110, such as Figure 4 As shown, the support plate 113 of this structure is also formed with a plurality of weight-reducing holes 1135 .

[0042] In this embodiment, in order to ensure the compactness and reasonable layout of the overall structure of the battery pack, a relief portion corresponding to the above-mentioned support portion is formed at the liquid cooling plate 3, and the relief portion includes a plurality of relief holes 30 corresponding to the support plate 113 one by one, and the structure and size thereof are adapted to the support plate 113. In addition, a plurality of reinforcing plates 31 are also provided at the bottom of the liquid cooling plate 3 to further enhance the stability of the battery pack structure.

[0043] According to the battery pack of the utility model, a reinforcement part and a support part are provided in the housing cavity of the shell, and when the battery cell module 2 is provided in the housing cavity, the support part fits with the bottom of the battery cell module 2, so that the structural stability of the shell can be improved by the reinforcement part and the support part, that is, the impact resistance of the shell can be improved, thereby effectively reducing the possibility of battery module damage and the like in impact conditions. Furthermore, the liquid cooling plate 3 is formed with an avoidance part corresponding to the above-mentioned support part, so that the compactness of the overall structure of the battery pack and the rationality of the layout can be ensured.

[0044] Finally, it should be noted that the above-described embodiments are only specific implementation methods of the present application, which are used to illustrate the technical solutions of the present application, rather than to limit them. The protection scope of the present application is not limited thereto. Although the present application is described in detail with reference to the above-described embodiments, ordinary technicians in the field should understand that any technician familiar with the technical field can still modify the technical solutions recorded in the above-described embodiments within the technical scope disclosed in the present application, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A battery pack, characterized in that: The battery pack is provided with: The housing is formed with a receiving cavity, wherein a reinforcing portion and a supporting portion are arranged in the receiving cavity; The battery cell module is located in the accommodating cavity, and the supporting portion is in contact with the bottom of the battery cell module; as well as The liquid cooling plate is located at the bottom of the battery core module, and the liquid cooling plate is formed with an escape portion corresponding to the support portion.

2. The battery pack according to claim 1, characterized in that: The shell includes a top cover, a panel and a bottom guard plate which are connected in sequence. The panel is formed into a rectangular parallelepiped frame structure. The reinforcement part and the support part are both connected to the panel.

3. The battery pack according to claim 2, characterized in that: The support portion includes a plurality of support plates, and the two ends of the enclosure plate in the width direction are respectively connected to the support plates; each of the support plates extends along the length direction of the enclosure plate.

4. The battery pack according to claim 3, characterized in that: The support plate is formed into a multi-step structure.

5. The battery pack according to claim 4, characterized in that: Along the width direction of the enclosure, the support plate forms a first inclined section, a first connecting section, a second inclined section and a second connecting section which are connected in sequence, the first inclined section is connected to the enclosure, and the second connecting section is fitted with the bottom of the battery cell module.

6. The battery pack according to claim 5, characterized in that: The support plate and the enclosure plate are integrally formed.

7. The battery pack according to claim 3, characterized in that: The avoidance portion includes a plurality of avoidance holes corresponding one to one with the support plates.

8. The battery pack according to claim 2, characterized in that: The reinforcement portion includes a reinforcement beam, and two ends of the reinforcement beam in the extension direction are respectively connected to two ends of the enclosure plate in the width direction; along the length direction of the enclosure plate, the reinforcement beam is located in the middle section of the accommodating cavity.

9. The battery pack according to claim 8, characterized in that: A plurality of recesses are formed on the top of the reinforcing beam close to the top cover, and the recesses are located at both ends and the middle of the reinforcing beam in the length direction.

10. The battery pack according to claim 9, characterized in that: The reinforcing portion further includes a plurality of connecting pieces, and the connecting pieces are arranged on the top of the reinforcing beam so as to cover the openings of the corresponding recessed portions at the top of the reinforcing beam.

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