CN220065999U - Battery packs and energy storage devices - Google Patents

Abstract

The utility model discloses a battery pack and energy storage equipment. The battery pack includes: a box with a receiving cavity; at least one battery module, at least one battery module is located in the receiving cavity, each battery module includes a plurality of battery cells, and the plurality of battery cells are arranged along the first The two adjacent battery cells are arranged side by side in the second direction, and two adjacent battery cells are connected through an electrical connection piece. The battery cell has an explosion-proof valve on one side along the second direction; the collection component includes a wire harness isolation plate and a wire harness. The wire harness isolation plate is located in the battery module. Along at least one side of the third direction, the wire harness is mounted on the wire harness isolating plate and connected to the electrical connection piece. In the above-mentioned battery pack, the wire harness isolation plate and the explosion-proof valve are located in different directions, which increases the safe distance between the wire harness isolation plate and the explosion-proof valve and prevents the battery cell from causing thermal runaway. The shielding direction can avoid or reduce the risk of burning the wire harness isolation plate due to sprayed electrolyte or sparks.

Description

Battery packs and energy storage devices

Technical field

The utility model relates to the technical field of energy storage, in particular to a battery pack and energy storage equipment.

Background technique

In related technology, a battery pack includes a battery module and a wire harness isolating plate located above the battery module. The battery module includes a battery cell. The wire harness isolating plate is above the battery cell. The wire harness isolating plate is close to the explosion-proof valve. There is a battery When the monomer undergoes thermal runaway, the electrolyte or sparks sprayed out may cause the wiring harness isolation plate to burn.

Utility model content

An embodiment of the present invention provides a battery pack and an energy storage device to solve at least one of the above technical problems.

A battery pack according to the embodiment of the present invention includes:

A box body, the box body is provided with a receiving cavity;

At least one battery module, the at least one battery module is located in the accommodation cavity, each battery module includes a plurality of battery cells, the plurality of battery cells are arranged side by side along the first direction, two adjacent ones Each of the battery cells is connected through an electrical connecting piece, and one side of the battery cells along the second direction has an explosion-proof valve;

Collection component, the collection component includes a wire harness isolating plate and a wire harness. The wire harness isolating plate is located on at least one side of the battery module along the third direction. The wire harness is installed on the wire harness isolating plate and connected to the battery module. In the connecting piece, the first direction, the second direction and the third direction are perpendicular to each other.

In the above battery pack, the wire harness isolation plate is located on at least one side of the battery module along the third direction, and the battery cell has an explosion-proof valve on one side along the second direction. The second direction and the third direction are perpendicular to each other, so that the wire harness isolation plate is The explosion-proof valve is located on the side in different directions, which increases the safe distance between the wiring harness isolation plate and the explosion-proof valve. When the battery cell undergoes thermal runaway, the wiring harness isolation plate blocks the explosion-proof valve in the second direction after the explosion-proof valve is sprayed, thus avoiding or reducing the explosion. The electrolyte or sparks escaping may cause the wiring harness isolation plate to burn.

In some embodiments, the box includes two first side plates spaced apart along the third direction, and a portion of the first side plates forms the wire harness isolation plate.

In this way, a part of the first side plate can be used to form a wire harness isolation plate, thereby improving the assembly efficiency of the battery pack.

In some embodiments, the first side plate includes a base plate and a convex plate, the convex plate is protruding on a side of the base plate facing the battery module, and the convex plate forms the wire harness isolation plate. .

In this way, the fixing effect of the wire harness can be increased.

In some embodiments, the wire harness isolation plate is located between two adjacent battery modules.

In some embodiments, the wire harness isolating plate has a groove on one side facing the battery module, the wire harness includes a wiring portion and a connecting portion, and the connecting portion connects the electrical connecting piece and the The wiring part is located in the groove.

In some embodiments, a fixing piece is provided in the groove, and the wiring portion is fixed on the fixing piece.

In some embodiments, the fixing member includes a fixing part and a supporting part, the groove includes a first side wall and a second side wall opposite to each other along the second direction, and the fixing part is fixed on the first side. On the wall, the support part protrudes from the fixing part in a direction close to the second side wall, the support part supports the wiring part, and the wiring part is separated from the second side wall. .

In some embodiments, the projection of the electrical connecting piece on the groove along the third direction at least partially overlaps the groove.

In some embodiments, the wire harness isolation plate is provided with a through hole extending along the first direction.

An energy storage device in an embodiment of the present invention includes the battery pack of any of the above embodiments.

In the above energy storage device, the wire harness isolation plate is located on at least one side of the battery module along the third direction, and the battery cell has an explosion-proof valve on one side along the second direction. The second direction and the third direction are perpendicular to each other, so that the wire harness isolation plate Located in different directions from the explosion-proof valve, the safety distance between the wire harness isolation plate and the explosion-proof valve is increased to prevent the wire harness isolation plate from blocking the explosion-proof valve in the second direction after the explosion-proof valve sprays when the battery cell undergoes thermal runaway, thereby avoiding or reducing Sprayed electrolyte or sparks may cause the wiring harness isolation plate to burn.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Description of the drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description These are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without exerting creative efforts.

Figure 1 is a perspective view of a battery pack according to an embodiment of the present invention;

Figure 2 is an enlarged view of part A of the battery pack in Figure 1;

Figure 3 is another perspective view of the battery pack according to the embodiment of the present invention;

Figure 4 is an enlarged view of part B of the battery pack in Figure 3;

Figure 5 is a cross-sectional view of the battery pack according to the embodiment of the present utility model;

Figure 6 is an enlarged view of part C of the battery pack in Figure 5;

Figure 7 is a partial cross-sectional view of the battery pack according to the embodiment of the present invention;

Figure 8 is an enlarged view of part D of the battery pack in Figure 1;

FIG. 9 is a positional relationship diagram between the projection of the groove and the electrical connecting piece according to the embodiment of the present invention.

Explanation of reference symbols:

Battery pack 100, box 12, battery module 14, collection component 16, accommodation cavity 18, battery cell 20, electrical connection piece 22, explosion-proof valve 24, wire harness isolation plate 26, wire harness 28, lower box 30, opening 32 , first electrode 34, second electrode 36, first connector 38, second connector 40, battery management module 42, first side plate 44, base plate 45, second side plate 46, raised plate 47, third side Board 48 , groove 54 , wiring part 56 , connection part 58 , first side wall 60 , second side wall 62 , fixing part 64 , fixing part 66 , support part 68 , projection 70 , area 72 , through hole 74 .

Detailed ways

The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention and cannot be understood as limitations of the present invention.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", The directions indicated by "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" etc. Or the positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and operation, therefore it cannot be construed as a limitation of the present invention. In addition, the terms “first” and “second” are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Therefore, the features defined as “first” and “second” may explicitly or implicitly include one or more features. In the description of the present invention, "plurality" means two or more, unless otherwise clearly and specifically limited.

In the description of the present utility model, it should be noted that, unless otherwise clearly stated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection or a removable connection. Detachably connect, or connect in one piece. The connection can be mechanical or electrical. It can be a direct connection or an indirect connection through an intermediary. It can be an internal connection between two elements or an interaction between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

In the present invention, unless otherwise expressly stipulated and limited, the first feature being "above" or "below" the second feature may include direct contact between the first and second features, or may include the first and second features being in direct contact with each other. Features are not in direct contact but through other features between them. Furthermore, the terms "above", "above" and "above" a first feature on a second feature include the first feature being directly above and diagonally above the second feature, or simply mean that the first feature is higher in level than the second feature. “Below”, “under” and “under” the first feature is the second feature includes the first feature being directly below and diagonally below the second feature, or simply means that the first feature is less horizontally than the second feature.

The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are only examples and are not intended to limit the invention. Furthermore, the present invention may repeat reference numbers and/or reference letters in different examples, such repetition being for purposes of simplicity and clarity and does not in itself indicate a relationship between the various embodiments and/or arrangements discussed. In addition, the present invention provides examples of various specific processes and materials, but those of ordinary skill in the art may recognize the application of other processes and/or the use of other materials.

Referring to FIGS. 1 to 4 , a battery pack 100 provided in an embodiment of the present invention includes a box 12 , at least one battery module 14 and a collection assembly 16 . The box 12 is provided with a receiving cavity 18 . At least one battery module 14 is located in the accommodating cavity 18. Each battery module 14 includes a plurality of battery cells 20. The plurality of battery cells 20 are arranged side by side along the first direction. Two adjacent battery cells 20 are connected by an electrical connecting piece. 22 is connected, and the battery cell 20 has an explosion-proof valve 24 on one side along the second direction. The collection assembly 16 includes a wire harness isolation plate 26 and a wire harness 28. The wire harness isolation plate 26 is located on at least one side of the battery module 14 along the third direction. The wire harness 28 is installed on the wire harness isolation plate 26 and connected to the electrical connection piece 22. In the first direction, The second direction and the third direction are perpendicular to each other.

In the above-mentioned battery pack 100, the wire harness isolation plate 26 is located on at least one side of the battery module 14 along the third direction, and the battery cell 20 has an explosion-proof valve 24 on one side along the second direction. The second direction and the third direction are perpendicular to each other. The wiring harness isolating plate 26 and the explosion-proof valve 24 are positioned in different directions, thereby increasing the safety distance between the wiring harness isolating plate 26 and the explosion-proof valve 24, and preventing the wiring harness isolating plate 26 from spraying the explosion-proof valve 24 behind the explosion-proof valve 24 when thermal runaway occurs in the battery cell 20. The shielding in the second direction further avoids or reduces the risk of the wire harness isolation plate 26 being burned by the sprayed electrolyte or sparks.

Specifically, in FIGS. 1 and 3 , the first direction is the front and rear direction, the second direction is the up and down direction, and the third direction is the left and right direction. It can be understood that in other embodiments, the first direction, the second direction and the third direction can also be directions in other directions, and are not limited to the directions shown in FIGS. 1 and 3 .

The box 12 includes a lower box 30 and an upper cover (not shown). The lower box 30 is provided with an accommodating cavity 18. The top of the lower box 30 has an opening 32 connected to the accommodating cavity 18. The opening 32 can be used to access the battery. Mod 14. The upper cover is disposed on the top of the lower box 30 and closes the opening 32 so that the accommodation cavity 18 forms a relatively airtight space.

The shape of the lower box and the upper cover is not specifically limited in this utility model. In one embodiment, the lower box 30 is in the shape of a rectangular parallelepiped as a whole, and the upper cover is in the shape of a flat rectangular parallelepiped and is located on the top of the lower box 30 . The lower box 30 and the upper cover can be made of metal or plastic. The materials of the lower box 30 and the upper cover can be the same or different. The lower box 30 and the upper cover can be detachably connected. There is no specific limitation here.

The present invention does not specifically limit the number of battery modules 14 in the accommodation cavity 18 . In FIG. 1 , two battery modules 14 are disposed in the accommodation cavity 18 , and the two battery modules 14 are spaced apart along the third direction. The plurality of battery modules 14 may be electrically connected in series, parallel, or series-parallel.

In each battery module 14, a plurality may refer to two or more, and a plurality of battery cells 20 are arranged side by side along the front and rear direction. The battery cells 20 of each battery module 14 may be electrically connected in series, parallel or series-parallel. In FIG. 1 , the battery cells 20 of each battery module 14 are electrically connected in series, and the two battery modules 14 are electrically connected in series. That is, all the battery cells 20 are electrically connected in series. To form a battery system having a first electrode 34 and a second electrode 36 .

The lower box 30 includes a front side plate. The front side plate is provided with a first connector 38 and a second connector 40. The first connector 38 is connected to the first electrode 34, and the second connector 40 is connected to the second electrode 36. The first connector 38 and the second connector 40 allow the battery system to discharge to external electrical equipment or charge the battery system from an external power source.

A battery management module 42 is also provided on the front side panel. The battery management module 42 can connect the first electrode 34 and the second electrode 36 to control operations such as charging or discharging of the battery system. The battery management module 42 is also connected to the wiring harness 28 and obtains battery information of the battery cells 20 through the wiring harness 28. The battery information includes but is not limited to voltage, temperature and other information.

The wire harness isolation plate 26 may be a plastic plate, a metal plate, or a plate made of other materials, which is not specifically limited here. The wire harness isolation plate 26 can fix the wire harness 28, and the wire harness 28 is connected to the electrical connection piece 22. Through the electrical connection piece 22, the wire harness 28 can collect the battery information of the battery cell 20 and transmit it to the battery management module 42. Electrical connection tab 22 may include aluminum bar.

In Figure 1, the collection assembly 16 includes two wire harness isolation plates 26: a left wire harness isolation plate 26 and a right wire harness isolation plate 26. The left wire harness isolation plate 26 is located on the left side of the left battery module 14, and the right wire harness isolation plate 26 is located on the left side of the left battery module 14. On the right side of the right battery module 14. The explosion-proof valve 24 is located on the top of the battery cell 20. Therefore, the explosion-proof valve 24 and the wire harness isolation plate 26 are located in different directions, which avoids the wire harness isolation plate 26 from being blocked above after the explosion-proof valve 24 ejects the valve, thereby avoiding or reducing the ejection. The electrolyte or sparks may cause the wiring harness isolation plate 26 to burn.

The wire harness 28 can be connected to the electrical connection piece 22 close to the wire harness 28, which can reduce the length of the wire harness 28 and reduce the cost.

In some embodiments, the box 12 includes two first side plates 44 spaced apart along the third direction, and a portion of the first side plates 44 forms the wire harness isolation plate 26 .

In this way, a part of the first side plate 44 can be used to form the wire harness isolation plate 26 , thereby improving the assembly efficiency of the battery pack 100 .

Specifically, when the battery module 14 is installed, it is separated from the first side plate 44 and a certain space is formed between them. A part of the first side plate 44 forms the wire harness isolation plate 26. When the first side plate 44 is manufactured, it can be The wire harness isolating plate 26 is integrally formed, eliminating the need to assemble the wire harness isolating plate 26 to the first side plate 44 , which can improve the assembly efficiency of the battery pack 100 .

The first side plate 44 is made of metal, and the first side plate 44 on which the wire harness isolating plate 26 is formed can be manufactured through a stamping process.

In one embodiment, the first side plate 44 is made of plastic material, and the first side plate 44 formed with the wire harness isolation plate 26 can be manufactured through an injection molding process.

The box 12 also includes two second side plates 46 spaced along the first direction and two third side plates 48 spaced along the second direction, two first side plates 44, two second side plates 46 and two A third side plate 48 encloses a sealed receiving cavity 18 .

In FIG. 1 , the two first side panels 44 are respectively the left side panel and the right side panel of the lower box 30 , and the two second side panels 46 are respectively the front side panel and the rear side panel of the lower box 30 . The third side plate 48 is the bottom plate of the lower box 30, and the other third side plate 48 is a cover plate.

A left wire harness isolating plate 26 is formed on a part of the left side panel, and a right wire harness isolating plate 26 is formed on a part of the right side panel.

In some embodiments, please refer to FIGS. 1 and 8 . The first side plate 44 includes a base plate 45 and a convex plate 47 . The convex plate 47 is protruding on the side of the base plate 45 facing the battery module 14 . The convex plate 47 forms a wire harness. Isolation plate 26.

In this way, the fixing effect of the wire harness 28 can be increased.

Specifically, the thickness of the convex plate 47 is greater than the thickness of the base plate 45. The convex plate 47 has greater strength and is less likely to deform when it is stressed. The convex plate 47 forms the wire harness isolation plate 26, and the wire harness 28 is installed on the convex plate 47. The fixing effect of the wire harness 28 can be increased.

In some embodiments, please refer to FIG. 7 , the wire harness isolation plate 26 is located between two adjacent battery modules 14 .

In this way, the space between two adjacent battery modules 14 can be used to place the wire harness isolation plate 26 .

Specifically, when multiple battery modules 14 are installed, two adjacent battery modules 14 are separated and a certain space is formed between them. The wire harness isolation plate 26 can be placed between the two adjacent battery modules 14 in the space between two adjacent battery modules 14. Optionally, the wire harness isolating plate 26 can be located in the middle position between two adjacent battery modules 14 to facilitate the installation of the wire harness 28 connected to the battery modules 14 on both sides.

In FIG. 1 , two battery modules 14 are disposed in the accommodation cavity 18 , and a wire harness isolation plate 26 is located between the two battery modules 14 . The wire harness 28 connected to the left battery module 14 can be fixed on the left side of the wire harness isolation plate 26, and the wire harness 28 connected to the right battery module 14 can be fixed on the right side of the wire harness isolation plate 26. In this way, the use of the wire harness isolation plate 26 can be reduced. .

In one embodiment, when the number of battery modules 14 is three, the collection assembly 16 may include three wire harness isolation plates 26. The three wire harness isolation plates 26 are separated along the left and right directions. The left wire harness isolation plate 26 may be located on the left battery. Between the module 14 and the left side panel, the middle wire harness isolation plate 26 may be located between the left battery module 14 and the middle battery module 14, and the right wire harness isolation panel 26 may be located between the right battery module 14 and the right side panel. Alternatively, the right wire harness isolating plate 26 can be located between the right battery module 14 and the right side panel, the middle wire harness isolating plate 26 can be located between the right battery module 14 and the middle battery module 14 , and the left wire harness isolating plate 26 can be Located between the left battery module 14 and the left panel. The placement methods of the other three wire harness isolation boards 26 will not be discussed one by one here.

In one embodiment, when the number of battery modules 14 is three, the collection assembly 16 may include two wire harness isolation plates 26. The two wire harness isolation plates 26 are separated along the left and right directions. The left wire harness isolation plate 26 may be located on the left battery. Between the module 14 and the middle battery module 14 , the right wire harness isolation plate 26 may be located between the right battery module 14 and the middle battery module 14 .

In other embodiments, when the number of battery modules 14 is more than three, the position and number of the wire harness isolation plates 26 can be configured with reference to the embodiment of three battery modules 14 , which will not be described in detail here.

In some embodiments, the wire harness isolation plate 26 has a groove 54 on one side facing the battery module 14 . The wire harness 28 includes a wiring portion 56 and a connecting portion 58 . The connecting portion 58 connects the electrical connecting piece 22 and the wiring portion 56 , the wiring portion 56 is located in the groove 54 .

In this way, the wiring portion 56 can be protected and fixed to prevent the wiring harness 28 from being damaged and messy.

Specifically, the wiring portion 56 is located in the groove 54. On the one hand, when the battery pack 100 is assembled with other components, the wiring portion 56 is not easily touched to avoid damage to the wire harness 28. On the other hand, the wiring portion 56 can be along the It is arranged according to the groove 54 to prevent the wiring portion 56 from being exposed and the wiring harness 28 from being messy.

Further, the groove 54 is opened on a side of the harness isolation plate 26 facing the battery module 14. The groove 54 is of a side-opening type. The opening of the groove 54 faces the side of the battery module 14. The groove 54 includes a side along the third There are two opposite first side walls 60 and second side walls 62. In FIG. 4, the first side wall 60 is the lower side wall and the second side wall 62 is the upper side wall. The explosion-proof valve 24 is located on one side of the battery cell 20 along the second direction. In FIG. 1 , the explosion-proof valve 24 is located on the top of the battery cell 20 . When the explosion-proof valve 24 sprays the valve, the second side wall 62 can block the material ejected by the explosion-proof valve 24 (the valve material) in the height direction to avoid or reduce the spray valve material from entering the groove 54 and causing the wiring portion to 56 is damaged, effectively isolating the risk of thermal runaway of the wiring harness 28 .

In one embodiment, the groove 54 may be formed on the harness isolation plate 26 by stamping.

Corresponding to the signal collection of one battery module 14 , in one embodiment, the wiring harness 28 includes a plurality of wiring portions 56 and a plurality of connecting portions 58 , and the plurality of wiring portions 56 are connected to the plurality of connecting portions 58 in a one-to-one correspondence. Each connection portion 58 is connected to a corresponding electrical connection piece 22 . The plurality of wiring portions 56 can be bundled together in the groove 54 by tape, ties or insulated pipes.

In some embodiments, a fixing piece 64 is disposed in the groove 54 , and the wiring portion 56 is fixed on the fixing piece 64 .

In this way, the wiring portion 56 can be fixed in the groove 54 .

Specifically, the number of fixing members 64 may be single or multiple (two or more). The plurality of fixing members 64 may be arranged at intervals along the first direction, and each fixing member 64 may be disposed corresponding to the position of the electrical connecting piece 22 to which the connecting portion 58 is connected.

In one embodiment, the fixing member 64 may include a clamping member, and the clamping member may clamp and fix the wiring portion 56 .

In one embodiment, the wiring portion 56 can be bundled and fixed on the fixing member 64 through fasteners such as tape and cable ties.

The wiring portion 56 is fixed on the fixing member 64 to prevent the wiring portion 56 from loosening and prevent the wiring portion from escaping from the groove 54 during the transportation of the battery pack 100 and affecting the normal use of the wire harness 28 .

In some embodiments, the fixing member 64 includes a fixing portion 66 and a supporting portion 68 , the groove 54 includes a first side wall 60 and a second side wall 62 that are opposite along the second direction, and the fixing portion 66 is fixed on the first side wall. 60, the support portion 68 protrudes from the fixing portion 66 in a direction close to the second side wall 62. The support portion 68 supports the wiring portion 56, and the wiring portion 56 is separated from the second side wall 62.

In this way, it is convenient to fix the wiring portion 56 .

Specifically, the support portion 68 protrudes from the fixing portion 66 in a direction close to the second side wall 62 , and the support portion 68 supports the routing portion 56 so that both the routing portion 56 and the support portion 68 are separated from the first side wall 60 . At the same time, the wiring portion 56 is spaced apart from the second side wall 62. Therefore, in the second direction, the wiring portion 56 is spaced a certain distance from the second side wall 62, and the support portion 68 is spaced a certain distance from the first side wall 60. These distances can provide space for the wiring portion 56 to perform fixing operations. For example, when the wiring portion 56 is fixed to the support portion 68 with a tie, the tie can be passed through the space between the support portion 68 and the first side wall 60 , and the gap between the wiring portion 56 and the second side wall 62 The wiring part 56 is bundled and fixed on the supporting part 68 in the space between them.

In FIG. 6 , the first side wall 60 is the lower side wall of the groove 54 , and the second side wall 62 is the upper side wall of the groove 54 .

In some embodiments, the connecting portion 58 and the electrical connecting piece 22 are connected by welding.

In this way, the assembly efficiency of the battery pack 100 can be improved.

Specifically, when the battery pack 100 is assembled, various components need to be connected together, and the connection method includes welding. For example, the electrical connection piece 22 and the electrode of the battery cell 20 are connected by welding. The connection portion 58 and the electrical connection piece 22 are connected by welding, and can be connected by using the connection method of other components. There is no need to replace different equipment or tools for connection, which improves the assembly efficiency of the battery pack 100 .

In some embodiments, the projection of the electrical connecting piece 22 on the groove 54 along the third direction partially overlaps the groove 54 .

In this way, the installation efficiency of the wire harness 28 can be improved, the length of the wire harness 28 can be reduced, and the cost can be reduced.

Specifically, in FIG. 5 , the projection 70 of the electrical connecting piece 22 along the left direction of the groove 54 at least partially overlaps the groove 54 , so that the distance between the groove 54 and the electrical connecting piece 22 is smaller, thereby connecting The length of the portion 58 can also be smaller, and the wiring portion 56 can be more easily placed into the groove 54. Therefore, the installation efficiency of the wire harness 28 can be improved, the length of the wire harness 28 can be reduced, and the cost can be reduced.

Referring to FIG. 9 , the projection 70 of the electrical connecting piece 22 on the groove 54 along the left direction is located in the area 72 of the groove 54 , further reducing the distance between the electrical connecting piece 22 and the groove 54 .

In some embodiments, the wire harness isolation plate 26 is provided with a through hole 74 extending along the first direction.

In this way, the weight of the wire harness isolation plate 26 can be reduced and the energy density of the battery pack 100 can be improved.

Specifically, in FIGS. 1 and 8 , the through hole 74 extends in the front-rear direction. The wire harness isolating plate 26 is provided with a plurality of through holes 74 , and the plurality of through holes 74 are arranged at intervals along the second direction to further reduce the weight of the wire harness isolating plate 26 .

An energy storage device according to an embodiment of the present invention includes the battery pack 100 of any of the above embodiments.

In the above energy storage device, the wire harness isolation plate 26 is located on at least one side of the battery module 14 along the third direction, and the battery cell 20 has an explosion-proof valve 24 on one side along the second direction. The second direction and the third direction are perpendicular to each other. The wire harness isolating plate 26 and the explosion-proof valve 24 are positioned in different directions, thereby increasing the safe distance between the wire harness isolating plate 26 and the explosion-proof valve 24, and preventing the wire harness isolating plate 26 from blowing the explosion-proof valve 24 when thermal runaway occurs in the battery cell 20. The shielding in the second direction further avoids or reduces the risk of the wire harness isolation plate 26 being burned by the sprayed electrolyte or sparks.

Specifically, the energy storage device may also include a cluster frame. The energy storage device includes one or more battery packs 100. One or more battery packs 100 can be installed on a cluster frame to form a battery cluster. Multiple battery packs 100 can be arranged in an array on the cluster frame. Multiple battery packs 100 can be electrically connected in series, parallel or series-parallel mode, and one or more battery clusters can be placed in the box 12 or cabinet.

Energy storage equipment may include, but is not limited to, energy storage containers, household energy storage cabinets and other energy storage equipment.

In the description of this specification, reference to the description of the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" or the like is intended to be in conjunction with the description of the embodiments. or examples describe specific features, structures, materials or characteristics that are included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art will understand that various changes, modifications, substitutions and changes can be made to these embodiments without departing from the principles and purposes of the present invention. Variations, the scope of the present invention is defined by the claims and their equivalents.

Claims (10)

1. A battery pack, characterized in that it includes: A box (12), with a receiving cavity (18) provided in the box (12); At least one battery module (14), the at least one battery module (14) is located in the accommodation cavity (18), each of the battery modules (14) includes a plurality of battery cells (20), the A plurality of battery cells (20) are arranged side by side along the first direction. Two adjacent battery cells (20) are connected through electrical connecting pieces (22). The battery cells (20) are arranged along one side of the second direction. There is an explosion-proof valve (24) on the side; Collection component (16), the collection component (16) includes a wire harness isolation plate (26) and a wire harness (28). The wire harness isolation plate (26) is located at at least one side of the battery module (14) along the third direction. On the other side, the wire harness (28) is installed on the wire harness isolation plate (26) and connected to the electrical connection piece (22), and the first direction, the second direction and the third direction are perpendicular to each other. 2. The battery pack according to claim 1, wherein the box (12) includes two first side plates (44) spaced apart along the third direction, and the first side plates (44) ) forms the wire harness isolation plate (26). 3. The battery pack according to claim 2, wherein the first side plate (44) includes a base plate (45) and a convex plate (47), and the convex plate (47) is protruding from the base plate. (45) On the side facing the battery module (14), the convex plate (47) forms the wire harness isolation plate (26). 4. The battery pack according to claim 1, characterized in that the wire harness isolation plate (26) is located between two adjacent battery modules (14). 5. The battery pack according to claim 1, wherein the wire harness isolation plate (26) has a groove (54) on one side facing the battery module (14), and the wire harness (28) It includes a wiring portion (56) and a connecting portion (58). The connecting portion (58) connects the electrical connecting piece (22) and the wiring portion (56). The wiring portion (56) is located at the in the groove (54). 6. The battery pack according to claim 5, characterized in that a fixing part (64) is provided in the groove (54), and the wiring part (56) is fixed on the fixing part (64) . 7. The battery pack according to claim 6, characterized in that the fixing member (64) includes a fixing part (66) and a supporting part (68), and the groove (54) includes opposite directions along the second direction. A first side wall (60) and a second side wall (62), the fixing part (66) is fixed on the first side wall (60), and the supporting part (68) moves closer to the second side wall. The wall (62) protrudes on the fixing part (66) in the direction, and the supporting part (68) supports the wiring part (56). The wiring part (56) and the second side wall (56) 62) Separate. 8. The battery pack according to claim 5, characterized in that the projection (70) of the electrical connection piece (22) along the third direction on the groove (54) is consistent with the groove (54). ) overlap at least partially. 9. The battery pack according to claim 1, wherein the wire harness isolation plate (26) is provided with a through hole (74) extending along the first direction. 10. An energy storage device, characterized by comprising the battery pack (100) according to any one of claims 1-9.