Battery pack and energy storage system

Abstract

The utility model relates to a battery pack and an energy storage system, the battery pack comprises a battery module, a fixing support and a connector, the battery module comprises a plurality of battery cells arranged in parallel, an end plate is arranged at the end of the battery module, and the fixing support is detachably connected to the end plate and clamped with the connector. According to the battery pack provided by the invention, the connector is detachably connected to the end plate through the fixing bracket, and connectors of different specifications can be clamped on the fixing bracket or different fixing brackets can be replaced to adapt to connection of the connectors of different specifications on the end plate according to different mounting environments; the connector is flexible in mounting and fixing mode and high in adaptability, and the battery module can be connected with electrical equipment in different mounting environments.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of energy storage, in particular to a battery pack and an energy storage system. BACKGROUND

[0002] The battery module includes a plurality of electric cells arranged in sequence and an end plate arranged at the end of the battery module. The connector is an interface between the battery module and other electrical equipment. The electric cells are electrically connected through the connector, and the connector is fixed to the end plate of the battery module, facilitating the electrical connection between the connector and other elements to realize the transmission of electrical energy and signals between the battery module and the electrical equipment.

[0003] At present, the connector is generally directly fixed to the end plate of the battery module. When the connection environment of the battery module changes, the adaptability of the connector is poor, affecting the connection adaptability between the battery module and the electrical equipment. CONTENT OF THE UTILITY MODEL

[0004] Therefore, it is necessary to provide a battery pack and an energy storage system to solve the problem of poor adaptability of the connector in the existing battery module.

[0005] A battery pack, comprising:

[0006] A battery module, comprising a plurality of electric cells arranged side by side, and an end plate arranged at the end of the battery module; and

[0007] A fixing bracket and a connector, the fixing bracket being detachably connected to the end plate and being clamped with the connector.

[0008] In one embodiment, one of the fixing bracket and the connector is provided with a first clamping hook, and the other one is provided with a first clamping groove, and the first clamping hook can be matched with the first clamping groove.

[0009] In one embodiment, one of the fixing bracket and the end plate is provided with a second clamping hook, and the other one is provided with a second clamping groove, and the second clamping hook can be matched with the second clamping groove.

[0010] Alternatively, the fixing bracket is connected to the end plate by screwing.

[0011] In one embodiment, the fixing bracket comprises a body, at least one first clamping hook and at least one second clamping hook, and the first clamping hook and the second clamping hook are arranged on the body.

[0012] The connector is provided with a first clamping groove matched with the first clamping hook, and the end plate is provided with a second clamping groove matched with the second clamping hook.

[0013] In one of the embodiments, the first clamping hooks and the second clamping hooks are multiple, at least two of the first clamping hooks are arranged on opposite sides of the body, and at least two of the second clamping hooks are arranged on opposite sides of the body.

[0014] In one of the embodiments, the first clamping hook comprises a first connecting part and a first clamping part, opposite ends of the first connecting part are connected to the body and the first clamping part respectively, the first clamping part protrudes to the outside of the first connecting part, and can be matched in the first clamping groove.

[0015] The second clamping hook comprises a second connecting part and a second clamping part, opposite ends of the second connecting part are connected to the body and the second clamping part respectively, the second clamping part protrudes to the outside of the second connecting part, and can be matched in the second clamping groove.

[0016] In one of the embodiments, at least one of the first connecting part and the first clamping part is elastic, and at least one of the second connecting part and the second clamping part is elastic.

[0017] In one of the embodiments, the end plate is provided with a receiving groove, when the fixing support is connected to the end plate, the fixing support is at least partially and / or the connector is at least partially received in the receiving groove.

[0018] In one of the embodiments, the battery module is provided with the end plate at opposite ends, and a plurality of the fixing supports are connected between the end plates.

[0019] An energy storage system, comprising:

[0020] At least one battery pack according to any one of the above technical solutions.

[0021] The above battery pack and energy storage system, through the fixing support, the connector is detachably connected to the end plate, for different installation environments, different specifications of connectors can be clamped on the fixing support, or different fixing supports are replaced to adapt to the connection of different specifications of connectors on the end plate. The battery pack provided by the application is detachable among the end plate, the fixing support and the connector, the installation and fixing mode of the connector is flexible, the adaptability of the connector is high, and the connection of the battery module and the electrical equipment in different installation environments can be realized. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 The structure diagram of the battery pack provided in some embodiments.

[0023] Figure 2 The structure diagram of the end plate, the fixing support and the connector module provided in some embodiments.

[0024] Figure 3 For Figure 2 A-A sectional view in the middle.

[0025] Figure 4 For Figure 3 A partial enlarged view of the B region in the middle.

[0026] Figure 5 For Figure 2 A partial enlarged view of the C region in the middle.

[0027] Reference signs:

[0028] 100, battery pack;

[0029] 110, battery module; 120, battery cell; 130, end plate; 131, second clamping groove; 132, accommodating groove; 140, fixing support; 141, body; 142, first clamping hook; 1421, first connecting part; 1422, first clamping part; 143, second clamping hook; 1431, second connecting part; 1432, second clamping part; 150, connector; 151, first clamping groove. DETAILED DESCRIPTION

[0030] In order to make the above objectives, features and advantages of the present application more apparent and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, a large number of specific details are set forth in order to facilitate a full understanding of the present application. However, the present application can be implemented in many different ways other than those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, so the present application is not limited to the specific embodiments disclosed below.

[0031] In the description of the present application, it should be understood that if these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0032] In addition, the terms "first", "second", and the like, if any, are used herein for descriptive purposes only and should not be construed as indicating or implying relative importance or implicating the number of indicated technical characteristics. Thus, a feature defined with the terms "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, if the term "a plurality of" appears, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise explicitly specified and limited.

[0033] In the present application, unless otherwise explicitly specified and limited, if the terms "mounting", "connecting", "connecting", "fixing" and the like appear, these terms should be interpreted broadly. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0034] In the present application, unless otherwise explicitly specified and limited, if the first feature is described as "on" or "under" the second feature and the like, it can mean that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be the first feature directly above or obliquely above the second feature, or it can only mean that the first feature is higher than the second feature in horizontal height. The first feature "below", "below" and "below" the second feature can be the first feature directly below or obliquely below the second feature, or it can only mean that the first feature is lower than the second feature in horizontal height.

[0035] It should be noted that if an element is referred to as "fixed to" or "disposed on" another element, it can be directly on another element or there can be a middle element. If an element is considered to be "connected" to another element, it can be directly connected to another element or there can be a middle element. If present, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in the present application are only for illustrative purposes and do not represent the only implementation.

[0036] The technical solutions provided by the embodiments of the present application will be described below with reference to the accompanying drawings.

[0037] As an important component of the energy storage system, the battery module includes a plurality of electric cells arranged in sequence and an end plate arranged at the end of the battery module. The connector is an interface between the battery module and other electrical equipment. The electric cells are electrically connected through the connector, and the connector is fixed to the end plate of the battery module, facilitating the electrical connection of the connector and other elements to realize the transmission of electrical energy and signals between the battery module and the electrical equipment. At present, the connector is generally directly fixed to the end plate of the battery module. When the connection environment of the battery module changes, the adaptability of the connector is poor, affecting the connection adaptability of the battery module and the electrical equipment.

[0038] Based on this, referring to Figure 1 and Figure 2 The battery pack 100 includes a battery module 110, a fixing support 140, and a connector 150. The battery module 110 includes a plurality of electric cells 120 arranged side by side. The electric cell 120 is an electrical energy storage unit and can provide power for the device configured with the battery pack 100. By connecting a plurality of electric cells 120 in parallel or series, the battery module 110 can meet the electrical energy demand of different applications. The end of the battery module 110 is provided with an end plate 130, which is usually made of a metal material with strong electrical conductivity. The end plate 130 is responsible for the electrical connection between the electric cell 120 and the PCM main board and the output terminal. The end plate 130 plays a mechanical fixing role in the battery module 110, ensures the stable position of the electric cell 120 in the battery module 110, prevents damage to the electric cell 120 caused by external force, and improves the safety performance of the battery pack 100.

[0039] The fixing support 140 is detachably connected to the end plate 130, and the fixing support 140 is connected to the connector 150. In this way, the connector 150 is detachably connected to the end plate 130 through the fixing support 140. For different installation environments, different specifications of the connector 150 can be connected on the fixing support 140, or different fixing supports 140 can be replaced to adapt to the connection of different specifications of the connector 150 on the end plate 130.

[0040] The above-mentioned battery plate is detachable between the end plate 130, the fixing support 140, and the connector 150. Compared with the traditional fixing support 140 directly fixed to the end plate 130, the installation and fixing mode of the connector 150 is flexible, the adaptability of the connector 150 is higher, and the connection between the battery module 110 and the electrical equipment in different installation environments can be realized.

[0041] In an embodiment, referring to Figure 1 and Figure 2As shown, one of the fixing support 140 and the connector 150 is provided with a first hooking part, and the other of the fixing support 140 and the connector 150 is provided with a first slot part, and the first hooking part can be matched with the first slot part. For example, the fixing support 140 is provided with the first hooking part, and the connector 150 is provided with the first slot part; for another example, the fixing support 140 is provided with the first slot part, and the connector 150 is provided with the first hooking part. For example, the first hooking part has elasticity, and the operator acts on the connector 150 in a pushing, pulling, buckling or other manner, and the first hooking part is deformed elastically, so that the first hooking part is clamped in the first slot part, and the detachable connection between the connector 150 and the fixing support 140 can be achieved.

[0042] In this way, the detachable connection between the connector 150 and the fixing support 140 can be achieved through the clamping and matching between the first hooking part and the first slot part, so that the installation and fixing mode of the connector 150 is more flexible, different specifications of the connector 150 can be clamped on the fixing support 140 according to different installation environments, and the connection between the battery module 110 and the electrical equipment in different installation environments can be achieved.

[0043] In order to achieve the detachable connection between the fixing support 140 and the end plate 130, in an embodiment, referring to Figure 1 and Figure 2 As shown, one of the fixing support 140 and the end plate 130 is provided with a second hooking part, and the other of the fixing support 140 and the end plate 130 is provided with a second slot part, and the second hooking part can be matched with the second slot part. For example, the fixing support 140 is provided with the second hooking part, and the end plate 130 is provided with the second slot part; for another example, the fixing support 140 is provided with the second slot part, and the end plate 130 is provided with the second hooking part. For example, the second hooking part has elasticity, and the operator acts on the fixing support 140 in a pushing, pulling, buckling or other manner, and the second hooking part is deformed elastically, so that the second hooking part is clamped in the second slot part, and the detachable connection between the fixing support 140 and the end plate 130 can be achieved.

[0044] In another embodiment, the fixing support 140 is connected to the end plate 130 in a screwing manner. For example, screw holes are arranged on the fixing support 140 and the end plate 130, and the detachable connection between the fixing support 140 and the end plate 130 can be achieved through the cooperation of the connecting bolts and the screw holes.

[0045] Thus, through the snap-fit ​​engagement between the second hook portion and the second slot portion, or the screw connection between the fixing bracket 140 and the end plate 130, a detachable connection between the fixing bracket 140 and the end plate 130 can be achieved. This makes the installation and fixing method of the fixing bracket 140 more flexible. For different installation environments, different fixing brackets 140 can be replaced to accommodate the connection of connectors 150 of different specifications on the end plate 130. This enables the battery module 110 to connect with electrical equipment in different installation environments.

[0046] In one embodiment, see further. Figures 3-5 As shown, the fixing bracket 140 includes a body 141, at least one first hook 142, and at least one second hook 143, both of which are disposed on the body 141. Preferably, the first hook 142 and the second hook 143 are integrally formed on the body 141 by injection molding, extrusion, or other methods to simplify the molding process of the fixing bracket 140 and improve its structural strength. The connector 150 is provided with a first slot 151, which can cooperate with the first hook 142. If the first hook 142 is elastic, the operator can apply force to the connector 150 or the fixing bracket 140 by pushing, pulling, or snapping. Through the elastic deformation of the first hook 142, the first hook 142 is engaged with the first slot 151, thereby achieving a detachable connection between the connector 150 and the fixing bracket 140. The end plate 130 is provided with a second slot 131, which can cooperate with the second hook 143. If the second hook 143 is elastic, the operator can push, pull, or snap on the fixed bracket 140 or the end plate 130. Through the elastic deformation of the second hook 143, the second hook 143 can be engaged with the second slot 131, thereby realizing a detachable connection between the fixed bracket 140 and the end plate 130.

[0047] Further, see Figure 2 , Figure 4 and Figure 5 As shown, there are multiple first hooks 142 and multiple second hooks 143. At least two first hooks 142 are spaced apart on opposite sides of the body 141. If the body 141 has a hollow structure, multiple first hooks 142 are located on the inner side of the body 141, with at least two first hooks 142 along... Figure 4 The horizontally spaced hooks 143 are arranged on the body 141 to ensure that the relatively far sides of the connector 150 are engaged with the fixed bracket 140, thus improving the stability and reliability of the connection between the connector 150 and the fixed bracket 140. Similarly, at least two second hooks 143 are spaced apart on opposite sides of the body 141. If the body 141 has a hollow structure, multiple second hooks 143 are located on the outside of the body 141, with at least two second hooks 143 along... Figure 5The first and second clamping hooks 142 and 143 are arranged on the body 141 in the horizontal direction, so that the fixing support 140 can be clamped on the end plate 130 on two opposite sides, thereby improving the stability and reliability of the connection between the fixing support 140 and the end plate 130.

[0048] It should be noted that the number of the first and second clamping hooks 142 and 143 can be two, four or other. The specific number of the first and second clamping hooks 142 and 143 is not limited in the present application, as long as at least two first clamping hooks 142 are arranged on the opposite sides of the body 141 and at least two second clamping hooks 143 are arranged on the opposite sides of the body 141.

[0049] Specifically, referring to Figure 2 , Figure 4 and Figure 5 , the first clamping hook 142 comprises a first connecting portion 1421 and a first clamping portion 1422. The opposite ends of the first connecting portion 1421 are connected to the body 141 and the first clamping portion 1422, respectively. Preferably, the body 141, the first connecting portion 1421 and the first clamping portion 1422 are integrally formed by injection molding, extrusion or the like, so as to simplify the forming process of the body 141, the first connecting portion 1421 and the first clamping portion 1422, and improve the structural strength among them. The first clamping portion 1422 protrudes outward from the first connecting portion 1421 and can be fitted into the first clamping groove 151, so as to realize the detachable connection between the connector 150 and the fixing support 140. Similarly, the second clamping hook 143 comprises a second connecting portion 1431 and a second clamping portion 1432. The opposite ends of the second connecting portion 1431 are connected to the body 141 and the second clamping portion 1432, respectively. Preferably, the body 141, the second connecting portion 1431 and the second clamping portion 1432 are integrally formed by injection molding, extrusion or the like, so as to simplify the forming process of the body 141, the second connecting portion 1431 and the second clamping portion 1432, and improve the structural strength among them. The second clamping portion 1432 protrudes outward from the second connecting portion 1431 and can be fitted into the second clamping groove 131, so as to realize the detachable connection between the connector 150 and the fixing support 140.

[0050] It should be noted that the number of the first and second clamping hooks 142 and 143 can be two, four or other. The specific number of the first and second clamping hooks 142 and 143 is not limited in the present application, as long as at least two first clamping hooks 142 are arranged on the opposite sides of the body 141 and at least two second clamping hooks 143 are arranged on the opposite sides of the body 141. Figure 2 Figure 4 and Figure 5 ​As shown, at least one of the first connecting portion 1421 and the first clamping portion 1422 is elastic, for example, the first connecting portion 1421 and / or the first clamping portion 1422 is made of at least one of rubber, silica gel, and plastic. When the operator acts on the connector 150 in a pushing, pulling, buckling, or the like manner, the elastic deformation of the first connecting portion 1421 and / or the first clamping portion 1422 allows the first clamping portion 1422 to be clamped in the first clamping groove 151, thereby achieving the detachable connection between the connector 150 and the fixing support 140. At least one of the second connecting portion 1431 and the second clamping portion 1432 is elastic, for example, the second connecting portion 1431 and / or the second clamping portion 1432 is made of at least one of rubber, silica gel, and plastic. When the operator acts on the fixing support 140 in a pushing, pulling, buckling, or the like manner, the elastic deformation of the second connecting portion 1431 and / or the second clamping portion 1432 allows the second clamping portion 1432 to be clamped in the second clamping groove 131, thereby achieving the detachable connection between the connector 150 and the fixing support 140.

[0051] In an embodiment, referring to Figure 2 As shown, the end plate 130 is provided with a receiving groove 132, which is preferably integrally formed on the end plate 130 by injection molding, extrusion, or the like, so as to simplify the forming process of the receiving groove 132 on the end plate 130. When the fixing support 140 is connected to the end plate 130, the fixing support 140 and / or the connector 150 is at least partially accommodated in the receiving groove 132. That is, when the fixing support 140 is connected to the end plate 130, the fixing support 140 is partially or entirely accommodated in the receiving groove 132, and / or the connector 150 is partially or entirely accommodated in the receiving groove 132. In this way, when the connector 150 needs to be connected to the end plate 130, the connector 150 and the fixing support 140 will not protrude outside the end plate 130, so as to protect the connector 150 and the fixing support 140, and the connector 150 and the fixing support 140 adopt a hidden structure, which will not interfere with the connection of external electrical equipment.

[0052] Further, referring to Figure 1 and Figure 2 As shown, the battery module 110 is provided with end plates 130 at opposite ends, and the structural strength of the battery module 110 can be improved by the two side end plates 130, and the stable position of the battery cell 120 in the battery module 110 is ensured. The end plates 130 are connected with a plurality of fixing supports 140 at intervals, and a plurality of connectors 150 can be connected to the end plates 130 at intervals, so as to expand the connection interface between the battery module 110 and the electrical equipment, and meet the power and signal transmission between the battery module 110 and the electrical equipment in different environments.

[0053] Exemplarily, as in the present embodiment, referring to Figure 1 andFigure 2 As shown, each end plate 130 is connected with two fixing supports 140, so that the two side end plates 130 of the battery pack 100 can be connected with four fixing supports 140 at the same time. Of course, in other feasible embodiments, the number of fixing supports 140 connected with the end plate 130 can also be three, four, five or other numbers, and the specific number of fixing supports 140 connected with the end plate 130 is not limited in the present application.

[0054] In addition, referring to Figure 1 With Figure 2 As shown, the present application also provides a power storage system, which comprises at least one battery pack 100 according to the above technical solutions. The power storage system described above is detachable among the end plate 130, the fixing support 140 and the connector 150, the installation and fixing mode of the connector 150 is flexible, the adaptability of the connector 150 is higher, and the connection of the battery pack 100 with the electrical equipment under different installation environments can be realized.

[0055] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description simple, all possible combinations of the technical features in the above-mentioned embodiments are not described, however, as long as the combination of the technical features does not exist contradictory, it should be considered as the scope of the present application.

[0056] The above-mentioned embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as the limitation of the patent application scope. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. A battery pack, characterized by, The battery pack comprises: a battery module comprising a plurality of electric cells arranged side by side, the battery module being provided with an end plate at an end thereof; and a fixing bracket and a connector, the fixing bracket being detachably connected to the end plate and being snap-connected to the connector.

2. The battery pack of claim 1, wherein, One of the fixing bracket and the connector is provided with a first hook portion, and the other of the fixing bracket and the connector is provided with a first slot portion, the first hook portion being capable of being fitted into the first slot portion.

3. The battery pack of claim 1, wherein, One of the fixing bracket and the end plate is provided with a second hook portion, and the other of the fixing bracket and the end plate is provided with a second slot portion, the second hook portion being capable of being fitted into the second slot portion. Alternatively, the fixing bracket is connected to the end plate by screwing.

4. The battery pack of claim 1, wherein, The fixing bracket comprises a body, at least one first hook and at least one second hook, the first hook and the second hook being arranged on the body. The connector is provided with a first slot for fitting the first hook, and the end plate is provided with a second slot for fitting the second hook.

5. The battery pack of claim 4, wherein, The first hook and the second hook are both in plurality, at least two of the first hooks being arranged at opposite sides of the body, and at least two of the second hooks being arranged at opposite sides of the body.

6. The battery pack of any one of claims 4 or 5, wherein, The first hook comprises a first connecting portion and a first snap-connection portion, opposite ends of the first connecting portion being connected to the body and the first snap-connection portion respectively, the first snap-connection portion protruding out of the first connecting portion and being capable of being fitted into the first slot. The second hook comprises a second connecting portion and a second snap-connection portion, opposite ends of the second connecting portion being connected to the body and the second snap-connection portion respectively, the second snap-connection portion protruding out of the second connecting portion and being capable of being fitted into the second slot.

7. The battery pack of claim 6, wherein, At least one of the first connecting portion and the first snap-connection portion is elastic, and at least one of the second connecting portion and the second snap-connection portion is elastic.

8. The battery pack of claim 1, wherein, The end plate is provided with a receiving groove, at least part of the fixing bracket and / or at least part of the connector being received in the receiving groove when the fixing bracket is connected to the end plate.

9. The battery pack of claim 1, wherein, The battery module is provided with the end plate at opposite ends thereof, and a plurality of the fixing brackets are connected to the end plates in a spaced manner.

10. An energy storage system characterized by, The energy storage system comprises: at least one battery pack as claimed in any one of claims 1-9.

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