Battery pack and energy storage device

Abstract

The utility model relates to a battery pack and an energy storage device, the battery pack comprises a shell, an installation assembly and a pipeline, the installation assembly comprises an installation support and a locking piece, the installation support is installed on the shell, the locking piece is installed on the installation support, the pipeline is located between the installation support and the locking piece, and the locking piece can lock the pipeline so that the pipeline can be fixed to the installation support. In the length direction of the installation assembly, the limiting parts are arranged at the two ends of the installation support and abut against the two ends of the pipeline correspondingly, the relative position of the pipeline and the installation support can be limited in the length direction of the installation assembly, and the stability of the installed pipeline is improved.

Description

Technical Field

[0001] The present application relates to the field of energy storage technology, and in particular to a battery pack and an energy storage device. Background Art

[0002] The battery pack is equipped with a fire protection system. When the temperature inside the battery pack is too high, the suppression tube in the fire protection system will release the inhibitor to reduce the possibility of spontaneous combustion of the battery pack. During the transportation of the battery pack, the battery pack will shake, and the suppression tube inside the battery pack will shake inside the battery pack, which may easily cause damage to the suppression tube. Utility Model Content

[0003] The present application provides a battery pack and an energy storage device, which are used to solve the problem of the shaking of the suppression tube in the battery pack.

[0004] An embodiment of the present application provides a battery pack, the battery pack comprising:

[0005] case;

[0006] A mounting assembly, the mounting assembly comprising a mounting bracket and a locking member, the mounting bracket being mounted on the housing, and the locking member being mounted on the mounting bracket;

[0007] a pipeline, wherein the pipeline is located between the mounting bracket and the locking member;

[0008] Wherein, along the length direction of the mounting assembly, both ends of the mounting bracket are provided with limiting portions, and the limiting portions located at both ends of the mounting bracket abut against the two ends of the pipeline respectively.

[0009] In a possible implementation manner, the limiting portion protrudes from one side of the mounting bracket, and a side facing the pipeline is arc-shaped.

[0010] In a possible implementation, the mounting bracket includes a mounting plate and a base, an angle is formed between the base and the mounting plate, and one end of the locking member is connected to the mounting plate, and the other end is connected to the base.

[0011] In a possible implementation manner, the base is provided with a mounting portion, and the mounting portion is provided with a through hole; one end of the locking member connected to the base is provided with a first bending portion, and the first bending portion extends into the through hole.

[0012] In a possible implementation manner, a second bent portion is provided at one end of the locking member connected to the mounting plate, and the second bent portion is detachably mounted on the mounting plate.

[0013] In a possible implementation manner, a flange is provided on a side of the mounting plate away from the base.

[0014] In a possible implementation, along the length direction of the mounting assembly, support portions are provided at both ends of the base, and the support portions are bent in a direction away from the pipeline.

[0015] In a possible implementation manner, a support foot is provided on one side of the support portion, and the support foot is used to be connected to the housing.

[0016] In a possible implementation manner, a protrusion is provided on the pipeline, and the protrusion abuts against the limiting portion.

[0017] An embodiment of the present application further provides an energy storage device, which includes a plurality of battery packs, and the battery packs are any of the battery packs described above.

[0018] The present application relates to a battery pack and an energy storage device. The battery pack includes a shell, a mounting assembly and a pipeline. The mounting assembly includes a mounting bracket and a locking member. The mounting bracket is mounted on the shell, and the locking member is mounted on the mounting bracket. The pipeline is located between the mounting bracket and the locking member. The locking member can lock the pipeline to fix the pipeline to the mounting bracket. Along the length direction of the mounting assembly, both ends of the mounting bracket are provided with limiting portions, which are respectively abutted against the two ends of the pipeline, and can limit the relative position of the pipeline and the mounting bracket along the length direction of the mounting assembly to improve the stability of the pipeline after installation.

[0019] It should be understood that the foregoing general description and the following detailed description are exemplary only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the structure inside the housing provided in an embodiment of the present application;

[0021] Figure 2 for Figure 1 A partial enlarged view of the middle I position;

[0022] Figure 3 A schematic diagram of the structure of the installation components and pipelines provided in the embodiment of the present application;

[0023] Figure 4 A schematic diagram of the structure of the mounting bracket provided in the embodiment of the present application;

[0024] Figure 5 for Figure 4 A partial enlarged view of the II position;

[0025] Figure 6 A schematic diagram of the structure of a locking member provided in an embodiment of the present application;

[0026] Figure 7 A schematic diagram of the structure of a battery pack provided in an embodiment of the present application.

[0027] Reference numerals:

[0028] 1- housing;

[0029] 2- Install the components;

[0030] 21-Mounting bracket;

[0031] 211-mounting plate;

[0032] 212- base;

[0033] 213-installation department;

[0034] 214-through hole;

[0035] 215-Flanging;

[0036] 216-supporting part;

[0037] 217-support legs;

[0038] 22-locking member;

[0039] 221- first bending portion;

[0040] 222- second bending portion;

[0041] 23-limiting part;

[0042] 3-Pipeline;

[0043] 31- raised portion;

[0044] 4-Upper cover;

[0045] 41-Window.

[0046] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application. DETAILED DESCRIPTION

[0047] In order to better understand the technical solution of the present application, the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0048] It should be clear that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0049] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms "a", "said" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings.

[0050] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0051] It should be noted that the directional words such as "upper", "lower", "left", and "right" described in the embodiments of the present application are described at the angles shown in the accompanying drawings and should not be understood as limiting the embodiments of the present application. In addition, in the context, it is also necessary to understand that when it is mentioned that an element is connected to another element "upper" or "lower", it can not only be directly connected to another element "upper" or "lower", but also indirectly connected to another element "upper" or "lower" through an intermediate element.

[0052] A plurality of cells may be arranged in the shell 1 of the battery pack disclosed in the present application, and the plurality of cells in the cell may be connected in series, in parallel or in a mixed connection. The mixed connection means that the plurality of cells are both connected in series and in parallel. In some embodiments, the plurality of cells may be directly connected in series, in parallel or in a mixed connection, and then the whole formed by the plurality of cells is accommodated in the box. The plurality of cells may be arranged side by side along the length direction of the battery pack, or may be arranged side by side along the width direction of the battery pack. In other embodiments, the plurality of cells may be first connected in series, in parallel or in a mixed connection to form a battery module, and the plurality of battery modules may be connected in series, in parallel or in a mixed connection to form a whole, and be accommodated in the box. Among them, the battery module includes a frame structure, and the frame structure may include an end plate, a side plate, a top plate and a bottom plate connected to each other, and the plurality of cells are located in the inner cavity of the frame structure, and are stacked and arranged in the inner cavity of the frame structure, and the stacking direction may be the length direction, the width direction or the height direction. In addition, the battery pack may also include other structures, such as a converging component, for realizing the electrical connection between the plurality of cells.

[0053] The battery cell may be in a cylindrical, flat, rectangular or other shape.

[0054] The battery cell includes a shell, a top cover, an electrode assembly and other functional components. In some embodiments, the shell and the top cover can be independent components. The shell has an opening, and the top cover covers the opening of the shell to isolate the internal environment of the battery cell from the external environment. The internal environment surrounded by the shell and the top cover can be used to accommodate the electrode assembly, electrolyte and other components. In other embodiments, the top cover and the shell can be integrated. Specifically, the top cover and the shell can form a common connection surface before other components are placed in the shell. When the interior of the shell needs to be encapsulated, the top cover covers the shell.

[0055] The shell can be in various shapes and sizes, such as a rectangular parallelepiped, a cylindrical shape, a hexagonal prism, etc. Specifically, the shape of the shell can be determined according to the specific shape and size of the electrode assembly. The shell can also be made of various materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and the embodiments of the present application do not impose any special restrictions on this.

[0056] The shape of the top cover can be adapted to the shape of the outer shell. A positive pole and a negative pole may be provided on the top cover. The positive pole and the negative pole may be electrically connected to the electrode assembly for outputting or inputting electrical energy of the battery cell. In some embodiments, the top cover may also be provided with an explosion-proof valve for releasing the internal pressure when the internal pressure or temperature of the battery cell reaches a threshold value. In some embodiments, an insulating member may also be provided on the inner side of the top cover, and the insulating member may be used to isolate the conductive parts in the outer shell from the top cover to reduce the risk of short circuit. Exemplarily, the insulating member may be plastic, rubber, etc.

[0057] The material of the top cover can be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and the present application embodiment does not impose any special restrictions on this. Optionally, the top cover can be made of a material with a certain hardness and strength (such as aluminum alloy), so that the top cover is not easily deformed when squeezed and collided, so that the battery cell can have higher structural strength and safety performance.

[0058] The electrode assembly is a component in the battery cell where electrochemical reactions occur to generate electricity. The housing may contain one or more electrode assemblies. The electrode assembly includes a positive electrode sheet, a negative electrode sheet, and a separator. The separator is located between the positive electrode sheet and the negative electrode sheet and is used to separate the positive electrode sheet from the negative electrode sheet. The negative electrode sheet, the separator, and the positive electrode sheet are stacked and wound in sequence.

[0059] The negative electrode sheet includes a negative electrode current collector and a negative electrode active material layer coated on the surface of the negative electrode current collector, and the positive electrode sheet includes a positive electrode current collector and a positive electrode active material layer coated on the surface of the positive electrode current collector. After winding, the negative electrode active material layer, the positive electrode active layer and the separator located therebetween constitute a winding structure. The negative electrode current collector can be cut to form a negative electrode tab, and the positive electrode current collector can be cut to form a positive electrode tab. The positive electrode tab and the negative electrode tab can be located together at one end of the winding structure, or the positive electrode tab and the negative electrode tab can be located at both ends of the winding structure.

[0060] The positive electrode tab is electrically connected to the positive electrode post through the positive electrode connector, and the negative electrode tab is electrically connected to the negative electrode post through the negative electrode connector. During the charge and discharge process of the battery cell, the positive electrode active material and the negative electrode active material in the winding structure react with the electrolyte to generate electrical energy, which is then transmitted to the positive electrode post through the positive electrode tab and the positive electrode connector, and to the negative electrode post through the negative electrode tab and the negative electrode connector, and the electrical energy is output through the positive electrode post and the negative electrode post.

[0061] The positive poles of multiple battery cells can be electrically connected through the positive electrode connecting sheet, and the negative poles of multiple battery cells can be electrically connected through the negative electrode connecting sheet, so as to realize the series connection, parallel connection or mixed connection of multiple battery cells.

[0062] like Figure 1 and Figure 2 As shown, the embodiment of the present application provides a battery pack, and a mounting assembly 2 and a pipeline 3 are also arranged in the shell 1 of the battery pack, and the pipeline 3 is installed on the shell 1 through the mounting assembly 2. The mounting assembly 2 includes a mounting bracket 21 and a locking member 22, the mounting bracket 21 is installed on the shell 1, the locking member 22 is installed on the mounting bracket 21, and the pipeline 3 is located between the mounting bracket 21 and the locking member 22. Along the length direction of the mounting assembly 2, both ends of the mounting bracket 21 are provided with limiting portions 23, which are respectively abutted against the two ends of the pipeline 3.

[0063] A fire protection system is provided in the battery pack, and the pipeline 3 can be a suppression tube in the fire protection system. When the temperature of the battery cell in the battery pack is too high or spontaneous combustion occurs, the fire protection system will be triggered, and the suppression tube will release the inhibitor to reduce the possibility of spontaneous combustion of the battery pack. Among them, the pipeline 3 can also be other pipeline devices in the battery pack. The limiting part 23 abuts against both ends of the pipeline 3, and can limit the relative position of the pipeline 3 and the mounting bracket 21 along the axial direction of the pipeline 3 to improve the stability of the pipeline 3 after installation.

[0064] like Figure 3 As shown, in a possible embodiment, a protrusion 31 is provided on the pipeline 3 , and the protrusion 31 is located at both ends of the pipeline 3 for abutting against the limiting portion 23 .

[0065] The pipeline 3 is mounted on the mounting bracket 21 through the locking member 22. Along the radial direction of the pipeline 3, the side edge of the limiting portion 23 contacts the side wall of the pipeline 3, so that the locking member 22 can limit the relative position of the pipeline 3 and the mounting bracket 21 along the radial direction of the pipeline 3. Along the axial direction of the pipeline 3, the side wall of the protrusion 31 abuts against the limiting portion 23, which can limit the relative position of the pipeline 3 and the mounting bracket 21 along the radial direction of the pipeline 3, reducing the possibility of the mounting bracket 21 in the pipeline 3.

[0066] like Figure 3 and Figure 4 As shown, in a possible embodiment, the limiting portion 23 protrudes from the mounting bracket 21, and is used to abut against both ends of the pipeline 3. The limiting portion 23 protrudes from the mounting bracket 21, and the side facing the pipeline 3 is arc-shaped.

[0067] The pipeline 3 and the raised portion 31 are both cylindrical, the limiting portion 23 abuts against the side wall of the raised portion 31, and the side of the limiting portion 23 facing the pipeline 3 is arc-shaped, so that the side edge of the limiting portion 23 can fit with the side wall of the pipeline 3, thereby increasing the abutment area between the side wall of the raised portion 31 and the limiting portion 23, thereby improving the stability of the pipeline 3 after installation.

[0068] like Figure 3 and Figure 4 As shown, in a possible embodiment, the mounting bracket 21 includes a mounting plate 211 and a base 212, and there is an angle between the mounting plate 211 and the base 212. The mounting plate 211 extends along the height direction of the battery pack, and the base 212 is inclined along the width direction of the battery pack. The pipeline 3 is located at the angle between the mounting plate 211 and the base 212. One end of the locking member 22 is connected to the mounting plate 211, and the other end is connected to the base 212 to limit the relative position between the pipeline 3 and the mounting bracket 21.

[0069] There is an angle between the mounting plate 211 and the base 212, and the base 212 extends along the width direction of the battery pack, and can form a receiving space along the radial direction of the pipeline 3. The pipeline 3 is located at the angle between the mounting plate 211 and the base 212, so that the pipeline 3 is located in the receiving space, reducing the possibility of interference between the pipeline 3 and other devices in the battery pack. One end of the locking member 22 is connected to the mounting plate 211, and the other end is connected to the base 212, and the pipeline 3 can be locked to the mounting bracket 21.

[0070] like Figure 4 As shown, in a possible embodiment, support portions 216 are provided at both ends of the base 212 along the length direction of the mounting assembly 2 . The support portions 216 can be an integrally formed structure with the base 212 and bend in a direction away from the pipeline 3 .

[0071] The base 212 is inclined along the width direction of the battery pack, the installation position of the pipeline 3 is opposite to the inclination direction of the base 212, and the support portion 216 is located on one side of the inclination direction of the base 212, so that the support portion 216 can support the base 212, improve the strength of the base 212, and reduce the possibility of deformation of the base 212.

[0072] like Figure 4 As shown, in a possible embodiment, a support foot 217 is provided on one side of the support portion 216 for connecting with the housing 1 .

[0073] The support leg 217 is located on the side of the support portion 216 facing the shell 1 and can be connected to the shell 1 by screws to limit the relative position between the mounting bracket 21 and the shell 1, thereby limiting the position of the pipeline 3 in the battery pack.

[0074] like Figure 4 As shown, in a possible embodiment, a flange 215 is provided on a side of the mounting plate 211 away from the base 212 , and the flange 215 is bent in a direction close to or away from the pipeline 3 .

[0075] The flange 215 can improve the strength of the mounting plate 211 , reduce the possibility of deformation of the mounting plate 211 , and improve the reliability of the mounting bracket 21 .

[0076] like Figure 4 , Figure 5 and Figure 6 As shown, in a possible embodiment, the base 212 is provided with a mounting portion 213 for mounting the locking member 22. The locking member 22 is provided with a first bent portion 221 at one end connected to the base 212, and a through hole 214 is provided on the mounting portion 213, and the first bent portion 221 extends into the through hole 214.

[0077] The first through hole 214 penetrates the mounting portion 213 along the inclined direction of the base 212 , and after the first bent portion 221 extends into the first through hole 214 , the relative position between the first bent portion 221 and the mounting portion 213 can be limited, so that the pipeline 3 can be fixed to the mounting bracket 21 by the locking member 22 .

[0078] like Figure 4 and Figure 6 As shown, in a possible embodiment, a second bending portion 222 is provided at one end of the locking member 22 connected to the mounting plate 211, and a through hole 214 is provided on the second bending portion 222, so that the second bending portion 222 can be detachably mounted on the mounting plate 211 by screws.

[0079] When the screw is tightened, the locking member 22 can be connected to the mounting plate 211, and the locking member 22 can fix the pipeline 3 to the mounting bracket 21. When the screw is loosened, the locking member 22 can be moved away from the mounting bracket 21, so that the pipeline 3 and the limiter 23 are no longer in contact, and the pipeline 3 can be pulled out axially, or pulled out through the gap between the locking member 22 and the mounting plate 211, so as to realize the removal of the pipeline 3.

[0080] like Figure 7 As shown, in a possible embodiment, the battery pack further includes an upper cover 4, which is mounted on the housing 1, and the pipe 3 and the mounting assembly 2 are located inside the upper cover 4. A window 41 is provided on the upper cover 4 for inspecting and maintaining the device in the battery pack. After the pipe 3 is installed on the mounting assembly 2, it can be exposed to the window 41, so that the staff can inspect or replace the pipe 3 through the window 41. A cover plate and a sealing ring are provided on the window 41, and after the cover plate is installed on the upper cover 4, the airtightness of the battery pack can be improved.

[0081] The embodiment of the present application also provides an energy storage device, which includes multiple battery packs, which are interconnected and used to store electrical energy. The battery pack is any of the battery packs described above, so the energy storage device also has the above technical effects.

[0082] The present application relates to a battery pack and an energy storage device, the battery pack includes a shell 1, a mounting assembly 2 and a pipeline 3, the mounting assembly 2 includes a mounting bracket 21 and a locking member 22, the mounting bracket 21 is mounted on the shell 1, the locking member 22 is mounted on the mounting bracket 21, the pipeline 3 is located between the mounting bracket 21 and the locking member 22, and the locking member 22 can lock the pipeline 3 so that the pipeline 3 is fixed to the mounting bracket 21. Along the length direction of the mounting assembly 2, both ends of the mounting bracket 21 are provided with limiting portions 23, which are respectively abutted against the two ends of the pipeline 3, and can limit the relative position of the pipeline 3 and the mounting bracket 21 along the length direction of the mounting assembly 2, so as to improve the stability of the pipeline 3 after installation.

[0083] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A battery pack, characterized in that: The battery pack comprises: Housing (1); A mounting assembly (2), the mounting assembly (2) comprising a mounting bracket (21) and a locking member (22), the mounting bracket (21) being mounted on the housing (1), and the locking member (22) being mounted on the mounting bracket (21); A pipeline (3), wherein the pipeline (3) is located between the mounting bracket (21) and the locking member (22); Wherein, along the length direction of the mounting assembly (2), both ends of the mounting bracket (21) are provided with limiting portions (23), and the limiting portions (23) located at the two ends of the mounting bracket (21) are respectively abutted against the two ends of the pipeline (3).

2. The battery pack according to claim 1, characterized in that: The limiting portion (23) protrudes from one side of the mounting bracket (21), and the side facing the pipeline (3) is arc-shaped.

3. The battery pack according to claim 1, characterized in that: The mounting bracket (21) comprises a mounting plate (211) and a base (212), an angle being formed between the base (212) and the mounting plate (211), one end of the locking member (22) being connected to the mounting plate (211), and the other end being connected to the base (212).

4. The battery pack according to claim 3, characterized in that: The base (212) is provided with a mounting portion (213), and a through hole (214) is provided on the mounting portion (213); one end of the locking member (22) connected to the base (212) is provided with a first bending portion (221), and the first bending portion (221) extends into the through hole (214).

5. The battery pack according to claim 3, characterized in that: One end of the locking member (22) connected to the mounting plate (211) is provided with a second bent portion (222), and the second bent portion (222) is detachably mounted on the mounting plate (211).

6. The battery pack according to claim 3, characterized in that: A flange (215) is provided on one side of the mounting plate (211) away from the base (212).

7. The battery pack according to claim 3, characterized in that: Along the length direction of the mounting assembly (2), support portions (216) are provided at both ends of the base (212), and the support portions (216) are bent in a direction away from the pipeline (3).

8. The battery pack according to claim 7, characterized in that: A support foot (217) is provided on one side of the support portion (216), and the support foot (217) is used to be connected to the housing (1).

9. The battery pack according to any one of claims 1 to 8, characterized in that: The pipeline (3) is provided with a protruding portion (31), and the protruding portion (31) abuts against the limiting portion (23).

10. An energy storage device, characterized in that: The energy storage device comprises a plurality of battery packs, and the battery packs are the battery packs according to any one of claims 1 to 9.

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