Battery pack, electric equipment and vehicle

Abstract

The utility model provides a battery pack, electric equipment and a vehicle, and relates to the technical field of batteries. The battery pack comprises a first battery cell and a power distribution box. The distribution box and the first battery cell are stacked in the thickness direction of the first battery cell and are electrically connected, and the distribution box can be used as a high-voltage control unit of the battery pack. The distribution box and the battery cells are arranged close to each other, so that the ratio of the length, width and thickness of the integral structure formed by stacking the distribution box and the first battery cells is relatively small, and the condition that the size of the integral structure formed by stacking the distribution box and the first battery cells is too large in a single direction is avoided; therefore, the overall structure formed by stacking the distribution box and the first battery cell is more compact, and the structure of the battery pack is relatively more compact.

Description

TECHNICAL FIELD

[0001] The application relates to a battery pack, an electrical equipment and a vehicle, and belongs to the technical field of batteries. BACKGROUND

[0002] With the rapid development of new energy vehicles, battery packs of high-voltage platforms are also becoming more and more popular, which can improve the charging efficiency of the battery pack. The distribution box is the main high-voltage control unit in the battery pack, and the distribution box needs to be installed in the battery pack and electrically connected with the battery cells in the battery pack.

[0003] At present, in order to set the distribution box in the battery pack, a space and a connecting structure specially used for installing the distribution box need to be additionally arranged in the battery pack, so that the structure of the battery pack is not compact and the space is large. CONTENT OF THE UTILITY MODEL

[0004] The application provides a battery pack, an electrical equipment and a vehicle, and solves the problem of the structure of the battery pack not being compact in the related art.

[0005] The application provides a battery pack, comprising:

[0006] a first battery cell;

[0007] a distribution box stacked along the thickness direction of the first battery cell and electrically connected with the first battery cell.

[0008] In some embodiments, along the thickness direction of the first battery cell, a first orthogonal projection of the distribution box in the first battery cell extension plane is located in the first battery cell.

[0009] In some embodiments, along the thickness direction of the first battery cell, the first orthogonal projection coincides with the first battery cell.

[0010] In some embodiments, the number of the first battery cells is a plurality, the plurality of first battery cells are stacked along the thickness direction of the first battery cell, and the plurality of first battery cells are electrically connected, and the distribution box is stacked along the thickness direction of the first battery cell.

[0011] In some embodiments, the distribution box is located between adjacent first battery cells.

[0012] In some embodiments, the distribution box has a positive electrode connecting end and a negative electrode connecting end, the positive electrode connecting end is connected with the first battery cell adjacent to one side of the distribution box, and the negative electrode connecting end is connected with the first battery cell adjacent to the other side of the distribution box.

[0013] In some embodiments, the first battery cell has a first tab and a second tab;

[0014] The positive connection end is connected with the first tab, and the negative connection end is connected with the second tab.

[0015] In some embodiments, the positive connection end and the negative connection end are located at two ends of the power distribution box along a first direction, and the first tab and the second tab are located at two ends of the first battery cell along the first direction, the first direction being perpendicular to a thickness direction of the first battery cell; or,

[0016] The positive connection end and the negative connection end are located at two ends of the power distribution box along a thickness direction of the first battery cell, and the first tab and the second tab are located at two ends of the first battery cell along the thickness direction of the first battery cell.

[0017] In some embodiments, when the positive connection end and the negative connection end are located at two ends of the power distribution box along the first direction, and the first tab and the second tab are located at two ends of the first battery cell along the first direction,

[0018] The positive connection end and the first tab are located on the same side of the first direction, and the negative connection end and the second tab are located on the same side of the first direction.

[0019] In some embodiments, when the positive connection end and the negative connection end are located at two ends of the power distribution box along the thickness direction of the first battery cell, and the first tab and the second tab are located at two ends of the first battery cell along the thickness direction of the first battery cell;

[0020] Along the thickness direction of the first battery cell, the position of the positive connection end corresponds to the position of the first tab, and the position of the negative connection end corresponds to the position of the second tab.

[0021] In some embodiments, the number of the power distribution boxes is at least two, and the at least two power distribution boxes include a positive power distribution box and a negative power distribution box.

[0022] Along the thickness direction of the first battery cell, the first battery cell, the positive power distribution box, and the negative power distribution box are stacked.

[0023] In some embodiments, along the thickness direction of the first battery cell, at least one first battery cell is stacked between the positive power distribution box and the negative power distribution box.

[0024] In some embodiments, the power distribution boxes and the first battery cell are stacked to form a first battery cell stack, the first battery cell stack having a first side and a second side opposite to each other in the thickness direction of the first battery cell, the positive power distribution box being adjacent to the first side, and the negative power distribution box being adjacent to the second side.

[0025] In some embodiments, the battery pack further comprises a second battery cell;

[0026] The second battery cell is distributed along a first direction with the first battery cell, the first direction being perpendicular to a thickness direction of the first battery cell, and the second battery cell is electrically connected with the first battery cell.

[0027] In some embodiments, the second battery cell is in a plurality, the plurality of second battery cells are stacked along a thickness direction of the second battery cell, and the plurality of second battery cells are electrically connected.

[0028] In some embodiments, the thickness direction of the second battery cell is parallel to the thickness direction of the first battery cell.

[0029] In some embodiments, the distribution box and the first battery cell are stacked to form a first battery cell stack, and the second battery cell is stacked to form a second battery cell stack.

[0030] The second battery cell stack is distributed along the first direction with the first battery cell stack.

[0031] In some embodiments, along the first direction, a second orthographic projection of the second battery cell stack in an extension plane of the first battery cell stack is located in the first battery cell stack.

[0032] In some embodiments, along the first direction, a size of the second orthographic projection in a second direction is the same as a size of the first battery cell stack in the second direction, the second direction being perpendicular to a thickness direction of the second battery cell, and the second direction being perpendicular to the first direction.

[0033] In some embodiments, the second battery cell stack is in a plurality, the plurality of second battery cell stacks are arranged along the first direction and / or a thickness direction of the first battery cell.

[0034] In some embodiments, the distribution box comprises a box body and a distribution main body, the distribution main body being arranged in the box body, and the box body being a flexible structural member.

[0035] In some embodiments, the distribution box further comprises a glue-filling part, the glue-filling part being filled in the box body.

[0036] In some embodiments, the battery pack further comprises:

[0037] A housing having a cavity;

[0038] The first battery cell and the distribution box are stacked in the cavity.

[0039] In some embodiments, the shell is provided with a socket, and the socket is electrically connected with the first battery cell.

[0040] In a second aspect, the present application further provides a battery pack as above.

[0041] In a third aspect, the present application further provides a vehicle comprising the battery pack or the electrical device as above.

[0042] In the battery pack provided by the present application, the distribution box is electrically connected with the battery cell, and the distribution box is stacked on the battery cell along the thickness direction of the battery cell. No additional space and connection structure for mounting the distribution box are needed, and the distribution box is arranged close to the battery cell, so that the structure of the battery pack is relatively more compact, and the occupied space of the battery pack is reduced.

[0043] The electrical device provided by the present application comprises the battery pack as above, so that the structure of the electrical device is compact.

[0044] The vehicle provided by the present application comprises the battery pack or the electrical device as above, so that the structure of the vehicle is more compact. BRIEF DESCRIPTION OF DRAWINGS

[0045] The above and other objects, features and advantages of the embodiments of the present application will become more apparent from the following detailed description taken in conjunction with the accompanying drawings. In the drawings, various embodiments of the present application are illustrated by way of example and not limitation in which:

[0046] Figure 1 FIG. 1 is a schematic view of a battery pack according to an embodiment of the present application;

[0047] Figure 2 FIG. 2 is a schematic view of a first battery cell stack and a second battery cell stack of the battery pack according to an embodiment of the present application;

[0048] Figure 3 FIG. 3 is a schematic view of a distribution box of the battery pack according to an embodiment of the present application;

[0049] Figure 4 FIG. 4 is a schematic view of the internal structure of the distribution box of the battery pack according to an embodiment of the present application;

[0050] Figure 5 FIG. 5 is a schematic view of the stacking of the first battery cell and the distribution box of the battery pack according to an embodiment of the present application.

[0051] REFERENCE NUMERALS:

[0052] 100 - shell, 110 - tray, 111 - cavity, 120 - upper cover, 130 - socket,

[0053] 200 - first battery cell stack, 210 - first battery cell, 211 - first tab, 212 - second tab,

[0054] 300 - distribution box, 310 - positive connection end, 320 - negative connection end, 330 - box body, 340 - distribution main body, 350 - glue filling part, 360 - power supply interface, 300a - positive distribution box, 300b - negative distribution box,

[0055] 400 - second cell stack, 410 - second cell. DETAILED DESCRIPTION

[0056] The embodiments of the present application are described below in detail with reference to the accompanying drawings. The embodiments described below are examples for explaining the present application and are not intended to be limiting of the present application.

[0057] In the description of the present application, it is to be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientations or positional relationships shown in the drawings, and are merely for the purpose of facilitating the description of the present application and simplifying the description, and are not intended to 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 construed as limiting the present application.

[0058] In addition, the terms "first", "second", etc. are used only for the purpose of description and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise explicitly specified and limited.

[0059] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected or can communicate with each other; can be directly connected, or can be indirectly connected through an intermediate medium; 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.

[0060] In the present application, unless specifically stated and limited otherwise, a first feature "on" or "under" a second feature can be directly in contact with the second feature, or indirectly in contact with the second feature through an intermediate medium. Moreover, a first feature "over", "above" and "on top of" a second feature can be directly above or obliquely above the second feature, or simply means that the first feature is higher in horizontal height than the second feature. A first feature "under", "below" and "underneath" a second feature can be directly below or obliquely below the second feature, or simply means that the first feature is lower in horizontal height than the second feature.

[0061] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples without contradiction.

[0062] With the rapid development of new energy vehicles, high-voltage platform battery packs are also becoming more and more popular, which will improve the charging efficiency of the battery pack. The distribution box is the main high-voltage control unit in the battery pack, and the distribution box needs to be installed in the battery pack and electrically connected with the battery cells in the battery pack.

[0063] At present, in order to set the distribution box in the battery pack, a space and a connecting structure for installing the distribution box need to be specially set in the battery pack. Specifically, the battery pack mainly includes a tray and a first cell stack body arranged in the tray, and the distribution box is arranged separately from the first cell stack body. In some battery packs, the distribution box is arranged on one side of the length direction of the tray, which will occupy the space in the length direction of the battery pack, resulting in that the length dimension of the battery pack is too large. In some battery packs, the distribution box is separately arranged outside the tray of the distribution box, which will also result in that the structure of the battery pack is not compact, which is not conducive to the overall vehicle layout.

[0064] The battery pack provided in the application is characterized in that a plurality of first battery cells are stacked along the thickness direction of the battery cells and electrically connected, so that the ratio of the length, width and thickness of the overall structure formed by the stacked plurality of first battery cells is relatively small, and the overall structure formed by the stacked plurality of first battery cells is compact. The distribution box is electrically connected with the first battery cells, and the distribution box can serve as a high-voltage control unit of the battery pack. The distribution box is also stacked on any first battery cell along the thickness direction of the first battery cell, so that the distribution box is arranged close to the first battery cell, and the ratio of the length, width and thickness of the overall structure formed by the stacked plurality of first battery cells and the distribution box is also relatively small. The overall structure formed by the stacked plurality of first battery cells and the distribution box is not excessively large in a single direction, so that the overall structure formed by the stacked plurality of first battery cells and the distribution box is more compact, and the structure of the battery pack of the application is relatively more compact.

[0065] The power consumption device provided in the application includes the battery pack described above, so that the overall structure of the power consumption device is more compact, and the space inside the power consumption device for installing other components in addition to the battery pack is larger, which is beneficial to the overall arrangement of the power consumption device.

[0066] The battery pack and the power consumption device provided in the application will be described in detail below in combination with specific embodiments.

[0067] The application provides a battery pack, as shown in Figure 1 The battery pack can be applied to a power consumption device, and specifically can be applied to a new energy vehicle.

[0068] The shell 100 is a basic component of the battery pack of the application, and can provide a mounting base for other at least partial components of the battery pack and protect the other at least partial components. The shell 100 can be made of a metal material, so that the shell 100 has better structural strength, and thus the durability and reliability of the shell 100 are better. Of course, the shell 100 can also be made of a high polymer material, so that the shell 100 has a certain structural strength while being relatively light in weight.

[0069] The shell 100 is provided with a cavity 111, which is a cavity-shaped structure inside the shell 100. The first battery cell stack 200 can be arranged in the cavity 111 of the shell 100, so that the first battery cell 210 and the distribution box 300 can be fixedly installed in the shell 100.

[0070] Specifically, the shell 100 can be provided with a tray 110 and an upper cover 120, the cavity 111 is located in the tray 110, the tray 110 also has an opening communicating with the cavity 111, the first battery cell 210 and the distribution box 300 can be arranged in the cavity 111 of the tray 110, and the first battery cell stack 200 can be disassembled from the shell 100 through the opening. The upper cover 120 is arranged at the opening of the tray 110 to seal the opening of the tray 110, so that the first battery cell 210 and the distribution box 300 can be covered in the cavity 111.

[0071] The distribution box 300 is electrically connected with the first battery cell 210, so that the distribution box 300 can be used as a high-voltage control unit of the battery pack of the present application. The first battery cell 210 has a thickness direction, wherein the thickness direction of the first battery cell 210 is the X direction in the figure, and the first battery cell 210 also has a length direction and a height direction, the length direction of the first battery cell 210 is the Y direction in the figure, and the height direction of the first battery cell 210 is the Z direction in the figure. The distribution box 300 is stacked on the first battery cell 210 along the thickness direction of the first battery cell 210, so that the distribution box 300 can be arranged close to the first battery cell 210 to reduce the distance between the distribution box 300 and the first battery cell 210, so that the overall structure formed by stacking the distribution box 300 and the first battery cell 210 is more compact, so that the space of the cavity 111 of the shell 100 can be fully utilized. In addition, the ratio of the length, width and thickness of the overall structure formed by stacking the distribution box 300 and the first battery cell 210 is relatively smaller, which avoids that the overall structure formed by stacking the distribution box 300 and the first battery cell 210 is too large in a single direction, so that the overall structure formed by stacking the distribution box 300 and the first battery cell 210 is more compact, and the structure of the battery pack of the present application is relatively more compact.

[0072] The shell 100 also has a socket 130, which can be connected with an electrical connector, so that the first battery cell 210 and the distribution box 300 can be electrically connected with an external device for charging and discharging.

[0073] In some embodiments, with reference to Figure 1 With Figure 2As shown, the number of the first battery cells 210 can be set to be multiple, and the multiple first battery cells 210 can be stacked along the thickness direction of the first battery cell 210 to form the first battery cell stack 200. In this way, the multiple first battery cells 210 can be more concentrated, so as to effectively utilize the space in the cavity 111 of the shell 100. The multiple first battery cells 210 can also be electrically connected, and specifically can be connected in series, so that the capacity of the battery pack of the present application is larger. It should be understood that the first battery cell 210 can be a structure similar to a sheet, so that the length dimension and the height dimension of the first battery cell 210 are larger than the thickness dimension. The ratio of the length, height and thickness dimensions of the overall structure formed after the multiple first battery cells 210 are stacked along the thickness direction of the first battery cell 210 is smaller, so that the first battery cell stack 200 formed by the multiple first battery cells 210 can avoid being too large in a single direction, and the ratio of the length, height and thickness of the first battery cell stack 200 formed by the multiple first battery cells 210 can be effectively reduced, so as to make the first battery cell stack 200 formed by the multiple first battery cells 210 compact.

[0074] The distribution box 300 is stacked along the thickness direction of the first battery cell 210 to any one of the first battery cells 210, so that the first battery cell stack 200 can still be compact when including multiple first battery cells 210.

[0075] In some embodiments, with reference to Figure 1 With Figure 2 As shown, after the distribution box 300 is stacked along the thickness direction of the first battery cell 210 to the first battery cell 210, the distribution box 300 can have a first orthographic projection in the extension plane of the first battery cell 210 in the thickness direction of the first battery cell 210, and the first orthographic projection of the distribution box 300 is located in the first battery cell 210. In this way, the orthographic projection size of the overall structure formed by the stacking of the distribution box 300 and the first battery cell 210 in the plane perpendicular to the thickness direction of the first battery cell 210 is the orthographic projection size of the first battery cell 210, so that the distribution box 300 does not additionally occupy the space of the cavity 111 of the shell 100.

[0076] Specifically, the first cell stack 200 has a length direction, a width direction and a height direction. The length direction of the first cell stack 200 is the X direction in the figure, that is, the thickness direction of the first cell 210. The width direction of the first cell stack 200 is the Y direction in the figure, and the height direction of the first cell stack 200 is the Z direction in the figure. The length of the first cell stack 200 is determined by the number of the first cells 210 and the size of the first cells 210 in the X direction. The width direction of the first cell stack 200 is the length direction of the first cell 210, and the height direction of the first cell stack 200 is the height direction of the first cell 210. In this way, the width of the first cell stack 200 is determined by the length of the first cell 210, and the height of the first cell stack 200 is determined by the height of the first cell 210. Accordingly, the first cell stack 200 can be closer to the inner wall of the cavity 111, so that it is not necessary to additionally reserve space for installing the power distribution box 300 between the inner wall of the cavity 111 and the first cell stack 200, so that the structure of the battery pack of the present application is more compact.

[0077] In some embodiments, reference is made to Figure 1 With Figure 2 As shown, along the thickness direction of the first cell 210, the first projection of the power distribution box 300 coincides with the first cell 210. Specifically, the size of the power distribution box 300 in the Y direction and the Z direction is consistent with the first cell 210, so that the size of the power distribution box 300 can be set relatively larger under the condition that the structure of the first cell stack 200 and the power distribution box 300 is stacked compactly, thereby facilitating the arrangement of structural members inside the power distribution box 300, so that the arrangement of components inside the power distribution box 300 is more flexible. Accordingly, the larger the size of the power distribution box 300, the better the heat dissipation effect of the power distribution box 300, so that the stability and reliability of the power distribution box 300 are also better.

[0078] In addition, it should be understood that the volume of the first cell 210 changes during charging and discharging. When the volume of the first cell 210 adjacent to the power distribution box 300 increases, the first cell 210 will generate a force on the power distribution box 300. The first projection of the power distribution box 300 in the thickness direction of the first cell 210 coincides with the first cell 210, so that the power distribution box 300 can fully bear the expansion force of the first cell 210 in the thickness direction of the first cell 210, avoiding local significant deformation of the first cell 210, and ensuring the safety of the overall structure of the battery pack.

[0079] In addition, it should be noted that when the number of the first cells 210 is multiple, along the thickness direction of the first cell 210, the first projection of the power distribution box 300 coincides with the multiple first cells 210, so that in the case that the first cell stack 200 includes multiple first cells 210, the structure is regular and compact.

[0080] In some implementations, reference Figure 1 and Figure 2 As shown, the power distribution box 300 of this application can be disposed between adjacent first cells 210 in the first cell stack 200. In this way, the opposite sides of the power distribution box 300 can respectively abut against adjacent first cells 210. When the volume of the two first cells 210 adjacent to the power distribution box 300 increases, the two first cells 210 will exert a force on the power distribution box 300. The power distribution box 300 can fully bear the expansion force of the two first cells 210 in the thickness direction of the first cells 210, avoiding significant local deformation of the two first cells 210 and ensuring the safety of the overall battery pack structure.

[0081] In addition, the distribution box 300 is located between adjacent first cells 210, which also means that the distribution box 300 is sandwiched between two adjacent first cells 210. In this way, the two adjacent first cells 210 can also play a role in fixing the distribution box 300, so that the distribution box 300 can be set more stably and reliably in the cavity 111 of the housing 100.

[0082] In some implementations, reference Figures 3 to 5 As shown, the power distribution box 300 of this application has a positive terminal 310 and a negative terminal 320. The positive terminal 310 and the negative terminal 320 of the power distribution box 300 are components that electrically connect the power distribution box 300 to the first battery cell 210. The positive terminal 310 is connected to the first battery cell 210 on the adjacent side of the power distribution box 300, and the negative terminal 320 is connected to the first battery cell 210 on the other adjacent side of the power distribution box 300, so that the power distribution box 300 can be connected in series with multiple first battery cells 210 in the first battery cell stack 200.

[0083] By electrically connecting the power distribution box 300 to two adjacent first cells 210, the electrical connection structure between the power distribution box 300 and the first cells 210 can be simplified, making it easier for the power distribution box 300 to electrically connect to the first cells 210, and also making the structure of the battery pack of this application more compact.

[0084] The distribution box 300 also has a power supply interface 360, which is a low-voltage interface.

[0085] In some implementations, reference Figure 5As shown, in order to make the first battery cell 210 electrically connectable with the distribution box 300, the first battery cell 210 is provided with a first tab 211 and a second tab 212, which are located at two ends of the first battery cell 210 in a first direction. The first direction is perpendicular to the thickness direction of the first battery cell 210, i.e. the Y direction in the figure. The first tab 211 can serve as the positive electrode end of the first battery cell 210, and the second tab 212 can serve as the negative electrode end of the first battery cell 210. Of course, the second tab 212 can also serve as the positive electrode end of the first battery cell 210, and the first tab 211 can serve as the negative electrode end of the first battery cell 210.

[0086] The first tab 211 can be connected with the positive electrode connecting end 310 of the distribution box 300, and the second tab 212 can be connected with the negative electrode connecting end 320 of the distribution box 300, so that the first battery cell 210 can be electrically connected with the distribution box 300.

[0087] In some embodiments, with reference to Figure 5 As shown, the first tab 211 of the first battery cell 210 and the positive electrode connecting end 310 of the distribution box 300 are located on the same side, and the second tab 212 of the first battery cell 210 and the negative electrode connecting end 320 of the distribution box 300 are located on the same side, so that the first tab 211 can be arranged close to the positive electrode connecting end 310, and the second tab 212 can be arranged close to the negative electrode connecting end 320. The first tab 211 of the first battery cell 210 adjacent to one side of the distribution box 300 can be electrically connected with the positive electrode connecting end 310 of the distribution box 300, and the second tab 212 of the first battery cell 210 adjacent to the other side of the distribution box 300 can be electrically connected with the negative electrode connecting end 320 of the distribution box 300, so that the first tab 211 and the positive electrode connecting end 310 can be more conveniently connected, and the electrical connection structure therebetween is simplified. It also makes the second tab 212 and the negative electrode connecting end 320 more conveniently connected, and the electrical connection structure therebetween is simplified. In addition, it also makes the distribution box 300 and the first battery cell 210 closer.

[0088] In some embodiments, the first tab 211 and the second tab 212 of the first battery cell 210 can be arranged at two ends of the first battery cell 210 in the first direction, and the positive electrode connecting end 310 and the negative electrode connecting end 320 of the distribution box 300 can be arranged at two ends of the distribution box 300 in the first direction. In this way, the first tab 211 and the positive electrode connecting end 310 are located on the same side, and the second tab 212 and the negative electrode connecting end 320 are located on the same side.

[0089] Specifically, the first tabs 211 of the plurality of first battery cells 210 can be connected to the positive connection end 310 of the distribution box 300 through busbars, and the second tabs 212 of the plurality of first battery cells 210 can be connected to the negative connection end 320 of the distribution box 300 through busbars. This makes it more convenient for the plurality of first battery cells 210 to be connected in series with the distribution box 300.

[0090] In some embodiments, as shown in FIG. 1, the number of the distribution boxes 300 can be set to two, and the two distribution boxes 300 include a positive distribution box 300a and a negative distribution box 300b, which can be used as a positive control component and a negative control component of the battery pack, respectively. The positive distribution box 300a and the negative distribution box 300b are stacked along the thickness direction of the first battery cell 210. The positive distribution box 300a and the negative distribution box 300b are connected to the first battery cell 210, and specifically connected in series with the first battery cell 210. By setting the positive distribution box 300a and the negative distribution box 300b, the electrical performance of the battery pack of the present application can be improved. The positive distribution box 300a and the negative distribution box 300b have the same size in the Y direction and the Z direction in FIG. 1, so that the first battery cell stack 200 can maintain a compact structure. Figure 5 In some embodiments, as shown in FIG. 1, the number of the distribution boxes 300 can be set to two, and the two distribution boxes 300 include a positive distribution box 300a and a negative distribution box 300b, which can be used as a positive control component and a negative control component of the battery pack, respectively. The positive distribution box 300a and the negative distribution box 300b are stacked along the thickness direction of the first battery cell 210. The positive distribution box 300a and the negative distribution box 300b are connected to the first battery cell 210, and specifically connected in series with the first battery cell 210. By setting the positive distribution box 300a and the negative distribution box 300b, the electrical performance of the battery pack of the present application can be improved. The positive distribution box 300a and the negative distribution box 300b have the same size in the Y direction and the Z direction in FIG. 1, so that the first battery cell stack 200 can maintain a compact structure.

[0091] Figures 1 to 2 In some embodiments, as shown in FIG. 1, the number of the distribution boxes 300 can be set to two, and the two distribution boxes 300 include a positive distribution box 300a and a negative distribution box 300b, which can be used as a positive control component and a negative control component of the battery pack, respectively. The positive distribution box 300a and the negative distribution box 300b are stacked along the thickness direction of the first battery cell 210. The positive distribution box 300a and the negative distribution box 300b are connected to the first battery cell 210, and specifically connected in series with the first battery cell 210. By setting the positive distribution box 300a and the negative distribution box 300b, the electrical performance of the battery pack of the present application can be improved. The positive distribution box 300a and the negative distribution box 300b have the same size in the Y direction and the Z direction in FIG. 1, so that the first battery cell stack 200 can maintain a compact structure. Figure 1

[0092] The positive distribution box 300a and the negative distribution box 300b can be set in various stacking modes. Specifically, the stacking modes can include the following:

[0093] The positive distribution box 300a and the negative distribution box 300b can be stacked on opposite sides of the same first battery cell 210, so that the positive distribution box 300a and the negative distribution box 300b can be stacked along the thickness direction of the first battery cell 210.

[0094] The positive distribution box 300a and the negative distribution box 300b can also be stacked on different first battery cells 210, respectively, so that the positive distribution box 300a and the negative distribution box 300b can be stacked along the thickness direction of the first battery cell 210.

[0095] ​​The positive electrode distribution box 300a can be stacked with the first battery cell 210, and the negative electrode distribution box 300b can be stacked on the side of the positive electrode distribution box 300a facing away from the first battery cell 210. This allows both the positive electrode distribution box 300a and the negative electrode distribution box 300b to be stacked along the thickness direction of the first battery cell 210.

[0096] The negative electrode distribution box 300b can be stacked with the first battery cell 210, and the positive electrode distribution box 300a can be stacked on the side of the negative electrode distribution box 300b facing away from the first battery cell 210. This allows both the positive electrode distribution box 300a and the negative electrode distribution box 300b to be stacked along the thickness direction of the first battery cell 210.

[0097] In some embodiments, when there are two distribution boxes 300, including a positive distribution box 300a and a negative distribution box 300b, the number of first cell stacks 200 can also be two, with one of the first cell stacks 200 having a positive distribution box 300a and the other having a negative distribution box 300b.

[0098] In some implementations, reference Figures 1 to 2 As shown, the first cell stack 200 has a first side and a second side facing away from each other in the thickness direction of the first cell 210. When the number of first cells 210 is large, the first side and the second side of the first cell stack 200 are the two sides with the greatest distance between them. The positive electrode distribution box 300a can be set adjacent to the first side of the first cell stack 200, and the negative electrode distribution box 300b can be set adjacent to the second side of the first cell stack 200. This makes the distance between the positive electrode distribution box 300a and the negative electrode distribution box 300b relatively maximized, which to a certain extent avoids the risk of short circuit in the battery pack of this application, and reduces the risk level of arcing at the electrical connection parts inside the battery pack, greatly improving the safety and reliability of the battery pack.

[0099] In some implementations, reference Figures 1 to 2 As shown, the battery pack of this application also includes a second cell 410, which is distributed and arranged along a first direction with the first cell 210, and is electrically connected to the first cell 210. By providing the second cell 410, the capacity of the battery pack of this application can be increased.

[0100] In some implementations, reference Figures 1 to 2As shown, the number of second cells 410 can be set to multiple, and the multiple second cells 410 are stacked along the thickness direction of the second cells 410 to form a second cell stack 400. In this way, the multiple second cells 410 can be arranged more centrally, thereby effectively utilizing the space within the housing 100. The thickness direction of the second cells 410 is parallel to the thickness direction of the first cell 210. Figure 1 In the X direction, the second cell 410 also has a length direction and a height direction, and the length direction of the second cell 410 is perpendicular to the height direction. Figure 1 In the Y direction, the height direction of the second cell 410 is... Figure 1 The Z-direction. Multiple second cells 410 can also be electrically connected to each other and to the first cell 210, specifically in series, thus increasing the capacity of the battery pack of this application. It should be understood that the second cell 410 can have a structure similar to a thin plate, making its length and height dimensions larger than its thickness. The ratio of the length, height, and thickness of the overall structure formed by stacking multiple second cells 410 along their thickness direction is smaller. This avoids the second cell stack 400 being too large in any single direction, effectively reducing the ratio of its length, width, height, and thickness, thus making the structure of the second cell stack 400 more compact.

[0101] The second cell stack 400 and the first cell stack 200 are distributed along the first direction, thereby effectively utilizing the space within the housing 100 to make the battery pack structure of this application compact.

[0102] In some implementations, reference Figures 1 to 2 As shown, the number of second cell stacks 400 can also be set to multiple, and the multiple second cell stacks 400 are all arranged along the first direction, thereby further increasing the number of first cells 210 in the battery pack of this application, so as to further increase the battery pack capacity.

[0103] Along the first direction, the second cell stack 400 can form a second orthographic projection in the extended plane of the first cell stack 200. The second orthographic projection can be located within the first cell stack 200. In this way, the dimensions of the overall structure formed by the first cell stack 200 and the second cell stack 400 in the X and Z directions can be determined by the dimensions of the first cell stack 200 in the X and Z directions, thereby making the overall structure formed by the first cell stack 200 and the second cell stack 400 more compact, and thus making the structure of the battery pack of this application more compact.

[0104] In some implementations, reference Figures 1 to 2As shown, along the first direction, the second positive projection of the second cell stack 400 in the extension plane of the first cell stack 200 is located in the first cell stack 200, that is, the height of the second cell stack 400 in the second direction can be set to be consistent with the height of the first cell stack 200 in the second direction. Correspondingly, the height of the second cell 410 and the first cell 210 can be set to be consistent, so that the second cell 410 and the first cell 210 can be the same kind of cell, which is beneficial to the scale preparation of the battery pack of the present application.

[0105] In some embodiments, in order to further increase the spacing of the positive electrode distribution box 300a and the negative electrode distribution box 300b, one distribution box 300 can be stacked with the first cell 210 along the thickness direction of the first cell 210, and the other distribution box 300 can be stacked with the second cell 410 of the second cell stack 400 farthest from the first cell stack 300 along the thickness direction of the second cell 410. In this way, the spacing of the two distribution boxes 300 is relatively farthest, so that the safety of the battery pack of the present application can be further improved.

[0106] In some embodiments, referring to Figure 4 As shown, in order to make the distribution box 300 of the present application better bear the expansion force of the adjacent first cell 210, the distribution box 300 can be provided to include a box body 330 and a distribution main body 340, and the distribution main body 340 is arranged in the box body 330, and the box body 330 can adopt an elastic structural member.

[0107] Specifically, the distribution main body 340 can be provided to include a circuit board and an electrical element arranged on the circuit board, so that the distribution box 300 has a distribution function. The box body 330 adopts an elastic structural member, so that the box body 330 can deform when subjected to external force. In this way, the distribution box 300 can be arranged in close contact with the adjacent first cell 210, so that the structure of the first cell stack 200 can be more compact. When the first cell 210 expands and deforms, the first cell 210 can extrude the box body 330, so that the box body 330 deforms under stress, and correspondingly, the box body 330 also provides space for the expansion and deformation of the first cell 210, avoiding damage to the first cell 210. When the first cell 210 restores the deformation, the elastic force of the box body 330 can make the box body 330 also restore the deformation.

[0108] In some embodiments, referring to Figure 4 As shown, in order to improve the safety of the distribution box 300, the box body 330 of the distribution box 300 is filled with a glue filling part 350, and the glue filling part 350 can cover the distribution main body 340, so as to reduce the heat generation of the distribution box 300, and further reduce the heat conducted to the adjacent first cell 210 by the distribution box 300, thereby playing a role in protecting the adjacent first cell 210.

[0109] Based on the battery pack, the application further provides a power consumption device comprising the battery pack.

[0110] Based on the power consumption device, the application further provides a vehicle comprising the power consumption device, and the battery pack can be arranged on a chassis of the vehicle.

[0111] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than limiting them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A battery pack, characterized by, Comprising: a first cell (210); a distribution box (300) stacked along the thickness direction of the first cell (210), and the distribution box (300) is electrically connected with the first cell (210).

2. The battery pack of claim 1, wherein, Along the thickness direction of the first cell (210), the first projection of the distribution box (300) in the extension plane of the first cell (210) is located in the first cell (210).

3. The battery pack of claim 2, wherein, Along the thickness direction of the first cell (210), the first projection coincides with the first cell (210).

4. The battery pack of claim 3, wherein, The number of the first cell (210) is multiple, multiple first cells (210) are stacked along the thickness direction of the first cell (210), and multiple first cells (210) are electrically connected, and the distribution box (300) is stacked along the thickness direction of the first cell (210) Any first cell (210).

5. The battery pack of claim 4, wherein, The distribution box (300) is located between adjacent first cells (210).

6. The battery pack of claim 5, wherein, The distribution box (300) has a positive connection end (310) and a negative connection end (320), the positive connection end (310) is connected with the first cell (210) adjacent to one side of the distribution box (300), and the negative connection end (320) is connected with the first cell (210) adjacent to the other side of the distribution box (300).

7. The battery pack of claim 6, wherein, The first cell (210) has a first tab (211) and a second tab (212); The positive connection end (310) is connected with the first tab (211), and the negative connection end (320) is connected with the second tab (212).

8. The battery pack of claim 7, wherein, The positive connection end (310) and the negative connection end (320) are located at both ends of the distribution box (300) in the first direction, and the first tab (211) and the second tab (212) are located at both ends of the first cell (210) in the first direction, and the first direction is perpendicular to the thickness direction of the first cell (210); Or, The positive connection end (310) and the negative connection end (320) are located at both ends of the distribution box (300) in the thickness direction of the first cell (210), and the first tab (211) and the second tab (212) are located at both ends of the first cell (210) in the thickness direction of the first cell (210).

9. The battery pack of claim 8, wherein, When the positive connection end (310) and the negative connection end (320) are located at both ends of the distribution box (300) in the first direction, and the first tab (211) and the second tab (212) are located at both ends of the first cell (210) in the first direction, The positive connection end (310) and the first tab (211) are located on the same side of the first direction, and the negative connection end (320) and the second tab (212) are located on the same side of the first direction.

10. The battery pack of claim 8, wherein, When the positive connection end (310) and the negative connection end (320) are located at both ends of the power distribution box (300) along the thickness direction of the first battery cell (210), and the first tab (211) and the second tab (212) are located at both ends of the first battery cell (210) along the thickness direction of the first battery cell (210); Along the thickness direction of the first battery cell (210), the position of the positive connection end (310) corresponds to the position of the first tab (211), and the position of the negative connection end (320) corresponds to the position of the second tab (212).

11. The battery pack of claim 1, wherein, The number of the power distribution boxes (300) is at least two, and the at least two power distribution boxes (300) include a positive power distribution box (300a) and a negative power distribution box (300b). Along the thickness direction of the first battery cell (210), the first battery cell (210), the positive power distribution box (300a), and the negative power distribution box (300b) are all stacked.

12. The battery pack of claim 11, wherein, Along the thickness direction of the first battery cell (210), at least one first battery cell (210) is stacked between the positive power distribution box (300a) and the negative power distribution box (300b).

13. The battery pack of claim 12, wherein, The power distribution box (300) and the first battery cell (210) form a first battery cell stack (200) in a stacked manner, the first battery cell stack (200) has a first side and a second side opposite to each other in the thickness direction of the first battery cell (210), the positive power distribution box (300a) is adjacent to the first side, and the negative power distribution box (300b) is adjacent to the second side.

14. The battery pack of any one of claims 1-13, wherein, The battery pack further includes a second battery cell (410). The second battery cell (410) and the first battery cell (210) are distributed along a first direction, the first direction is perpendicular to the thickness direction of the first battery cell (210), and the second battery cell (410) is electrically connected to the first battery cell (210).

15. The battery pack of claim 14, wherein, The number of the second battery cells (410) is multiple, the multiple second battery cells (410) are stacked along the thickness direction of the second battery cell (410), and the multiple second battery cells (410) are electrically connected.

16. The battery pack of claim 15, wherein, The thickness direction of the second battery cell (410) is parallel to the thickness direction of the first battery cell (210).

17. The battery pack of claim 15 or 16, wherein, The power distribution box (300) and the first battery cell (210) form a first battery cell stack (200) in a stacked manner, and the second battery cell (410) forms a second battery cell stack (400) in a stacked manner. The second battery cell stack (400) and the first battery cell stack (200) are distributed along the first direction.

18. The battery pack of claim 17, wherein, Along the first direction, a second orthographic projection of the second battery cell stack (400) in an extension plane of the first battery cell stack (200) is located in the first battery cell stack (200).

19. The battery pack of claim 18, wherein, Along the first direction, the size of the second orthographic projection in a second direction is the same as the size of the first battery cell stack (200) in the second direction, the second direction is perpendicular to the thickness direction of the second battery cell (410), and the second direction is perpendicular to the first direction.

20. The battery pack of claim 17, wherein, The second electric core stack (400) is in a plurality, and the plurality of second electric core stacks (400) are arranged along the first direction and / or the thickness direction of the first electric core (210).

21. The battery pack of any one of claims 1-13, wherein, The distribution box (300) comprises a box body (330) and a distribution main body (340), the distribution main body (340) is arranged in the box body (330), and the box body (330) is an elastic structure.

22. The battery pack of claim 21, wherein, The distribution box (300) further comprises a glue filling part (350), and the glue filling part (350) is filled in the box body (330).

23. The battery pack of any one of claims 1-13, wherein, Further comprising: A shell (100) has a cavity (111); The first electric core (210) and the distribution box (300) are stacked in the cavity (111).

24. The battery pack of claim 23, wherein, The shell (100) is provided with a socket (130), and the socket (130) is electrically connected with the first electric core (210).

25. An electrical device, comprising: The battery pack comprises the battery pack according to any one of claims 1-24.

26. A vehicle characterized by The battery pack comprises the battery pack according to any one of claims 1-24, or the battery pack comprises the electric device according to claim 25.

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