Battery pack and vehicle comprising same

Abstract

A battery pack and a vehicle comprising same. The battery pack (100) comprises: battery groups (1), wherein each battery group (1) comprises two battery cell groups (11) disposed spaced apart from each other in a third direction, each battery cell group (11) comprises a plurality of battery cells (111) arranged in a second direction, and the second direction is perpendicular to the third direction; and a plurality of acquisition circuit boards (4), wherein each battery cell group (11) corresponds to at least one acquisition circuit board (4), and the corresponding plurality of acquisition circuit boards (4) in a same battery group (1) are respectively located on the sides of two battery cell groups (11) close to each other.

Description

Battery pack and vehicle having the same

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application is based on the Chinese patent application with application number 202420367651.3 and application date of February 27, 2024, and claims the priority of the Chinese patent application. The entire content of the Chinese patent application is hereby introduced into this application as a reference. Technical Field

[0003] The present application relates to the field of vehicle technology, and in particular to a battery pack and a vehicle having the same. Background Art

[0004] In related technologies, due to the large number of components in the battery pack, the long and numerous lines, and the messy routing between components, there are certain safety hazards, and the safety and reliability of the battery pack cannot be guaranteed. Summary of the Invention

[0005] In order to solve the problem of messy battery pack wiring in the prior art, the present application proposes a battery pack.

[0006] The present application also proposes a vehicle, which includes the above-mentioned battery pack.

[0007] According to an embodiment of the present application, the battery pack includes: a battery pack, the battery pack including two cell groups spaced apart along a third direction, each cell group including a plurality of cells arranged in a second direction, the second direction being perpendicular to the third direction; an acquisition circuit board, the acquisition circuit boards being multiple, each cell group corresponding to at least one acquisition circuit board, and the corresponding multiple acquisition circuit boards in the same battery pack are respectively located on one side of the two cell groups close to each other.

[0008] According to the battery pack of the embodiment of the present application, the battery pack includes two battery cell groups arranged at intervals along a third direction, each battery cell group corresponds to at least one acquisition circuit board, and the corresponding multiple acquisition circuit boards in the same battery pack are respectively located on the side close to each other of the two battery cell groups. This can simplify the daisy chain line length of the acquisition circuit board, reduce the length of the low-voltage wiring harness, and relatively reduce the requirements for constraining the wiring harness, making the wiring in the battery pack cleaner and tidier, thereby improving the safety and reliability of the battery pack and reducing the safety hazards of the battery pack.

[0009] In addition, the battery pack according to the present application may also have the following additional technical features:

[0010] In some embodiments, the battery packs are multiple and stacked in a first direction, and the third direction, the second direction, and the first direction are perpendicular to each other.

[0011] In some embodiments, the battery pack further includes: a BDU module, wherein the BDU module is arranged on one side of the second direction of the plurality of battery packs, and in two adjacent battery packs, the total current input pole of one battery pack and the total current output pole of the other battery pack are both connected to the BDU module so that the two adjacent battery packs are connected in series through the BDU module, and the second direction is perpendicular to the first direction.

[0012] In some embodiments, the battery cells of the plurality of battery packs have the same layout.

[0013] In some embodiments, the multiple battery cells in each battery cell group are connected in series, and the multiple battery cell groups in the same battery pack are connected in series.

[0014] In some embodiments, each of the battery cells has a positive electrode and a negative electrode located at two ends of the third direction, and the positive electrodes of two adjacent battery cells in the same battery cell group are located at opposite ends of the third direction.

[0015] In some embodiments, each of the battery cells has a positive electrode and a negative electrode arranged at both ends of the third direction, and the two adjacent battery cell groups in the same battery pack are respectively the first battery cell group and the second battery cell group, and the two battery cells opposite to each other in the third direction are respectively the first battery cell and the second battery cell, and the positive electrodes of the first battery cell and the second battery cell are located at opposite ends of the third direction.

[0016] In some embodiments, two adjacent battery cell groups in the same battery pack are connected via a first connecting row.

[0017] In some embodiments, the first connecting row is located on a side of the battery pack away from the BDU module, and the corresponding first connecting rows in multiple battery packs have the same extension direction, are flush at both ends in the length direction, and are arranged opposite to each other in the first direction.

[0018] In some embodiments, the total current input terminal and the total current output terminal of each battery pack are located at one end of the battery pack close to the BDU module.

[0019] In some embodiments, the battery pack further includes: a rear-drive high-voltage port, which is located on a side of the plurality of battery packs away from the BDU module and is connected to the BDU module via a second connecting row.

[0020] In some embodiments, projections of the first connecting row and the second connecting row on a plane perpendicular to the first direction do not intersect.

[0021] The present application also provides a vehicle having the above embodiment.

[0022] According to the vehicle of the embodiment of the present application, the battery pack is provided with the above-mentioned battery pack, and the battery pack includes two battery cell groups arranged at intervals along a third direction, each battery cell group corresponds to at least one acquisition circuit board, and the corresponding multiple acquisition circuit boards in the same battery pack are respectively located on the side close to each other of the two battery cell groups. This can simplify the daisy chain line length of the acquisition circuit board, reduce the length of the low-voltage wiring harness, and relatively reduce the requirements for the constraint harness, so that the wiring in the battery pack is cleaner and tidier, improve the safety and reliability of the battery pack, and reduce the safety hazards of the battery pack.

[0023] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0025] FIG1 is a perspective view of a battery pack according to an embodiment of the present application from a first angle;

[0026] FIG2 is a perspective view of a battery pack according to an embodiment of the present application from a second angle;

[0027] FIG3 is a perspective view of a battery pack according to an embodiment of the present application from a third angle;

[0028] FIG4 is a perspective view of a battery pack according to an embodiment of the present application from a fourth angle, wherein the BDU module is not shown;

[0029] FIG5 is a circuit diagram of a battery pack according to an embodiment of the present application;

[0030] 6 is a schematic diagram of the connection between a battery pack and a BDU module of a battery pack according to an embodiment of the present application;

[0031] FIG7 is a schematic structural diagram of a vehicle according to an embodiment of the present application.

[0032] Figure markings: 1000, vehicle; 100, battery pack; 1, battery pack; 11, battery cell group; 111, battery cell; 12, total current input pole; 121, first total current input pole; 122, second total current input pole; 13, total current output pole; 131, first total current output pole; 132, second total current output pole; 14, first connecting row; 15, second connecting row; 16, connecting piece; 17, first battery pack; 18, second battery pack; 2, BDU module; 3, rear-wheel drive high-voltage port; 4, acquisition circuit board. DETAILED DESCRIPTION

[0033] The following describes in detail embodiments of the present application. 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 having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.

[0034] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0035] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0036] In this application, unless otherwise expressly specified or limited, terms such as "installed," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0037] The battery pack 100 according to an embodiment of the present application will be described below with reference to the accompanying drawings.

[0038] As shown in FIG. 1 and FIG. 2 , a battery pack 100 according to an embodiment of the present application includes a battery pack 1 and a collection circuit board 4 .

[0039] Specifically, referring to Figures 1 and 5, the battery pack 1 includes two cell groups 11 spaced apart along a third direction (as shown in Figure 1), and each cell group 11 includes a plurality of cell 111 arranged in a second direction (refer to the front-to-back direction shown in Figure 1), and the second direction is perpendicular to the third direction, thereby increasing the number of cell 111 in the battery pack 100, making the cell 111 more compactly arranged in the battery pack 100, improving the space utilization of the battery pack 100 in the second and third directions, increasing the energy density of the battery pack 100, and thereby improving the cruising range to meet the user's usage needs.

[0040] For example, the number of battery cells 111 arranged in the second direction in each battery cell group 11 may be two, four, six, eight or ten.

[0041] In the embodiment of the present application, the battery cell 111 can be a short battery cell or a long battery cell. It should be noted that short battery cells and long battery cells have clear definitions in this field. A short battery cell is a battery cell whose length does not exceed a first preset value, and a long battery cell is a battery cell whose length exceeds a second preset value. The above-mentioned first preset value and second preset value can be equal or unequal, and the first preset value can even be greater than the second preset value. For example, the length of a short battery cell can be 400mm-900mm, and the length of a long battery cell can be 600mm-1200mm.

[0042] In some embodiments, the length of each battery cell 111 may be 400 mm-900 mm, that is, each battery cell 111 may be a short battery cell, and two battery cell groups 11 may be arranged side by side to increase the arrangement density of the battery cells 111 .

[0043] In the embodiment of the present application, referring to Figures 1 and 2 , an acquisition circuit board 4 is used for low-voltage signal acquisition. There are multiple acquisition circuit boards 4, and each battery cell group 11 corresponds to at least one acquisition circuit board 4. The corresponding multiple acquisition circuit boards 4 in the same battery pack 1 are respectively located on the side close to each other of the two battery cell groups 11. This can simplify the daisy chain line length of the acquisition circuit board 4, reduce the length of the low-voltage wiring harness, and relatively reduce the requirements for the constraint harness, making the wiring in the battery pack 100 cleaner and tidier, improving the safety and reliability of the battery pack 100, and reducing the safety hazards of the battery pack 100. It should be noted that the daisy chain line is a connection form for signal transmission, using a serial chain structure. Each node is both a receiver and a driver of the signal. The signal starts from the first node and is transmitted to the next node in sequence until the last node. This structure can effectively reduce the reflection interference of the branch signal on the trunk signal and is suitable for low-speed signal transmission.

[0044] According to the battery pack 100 of the embodiment of the present application, the battery pack 1 includes two battery cell groups 11 arranged at intervals along a third direction, each battery cell group 11 corresponds to at least one acquisition circuit board 4, and the corresponding multiple acquisition circuit boards 4 in the same battery pack 1 correspond one-to-one to the two battery cell groups 11 and are respectively located on the side of the two battery cell groups 11 close to each other. This can simplify the daisy chain line length of the acquisition circuit board 4, reduce the length of the low-voltage wiring harness, and relatively reduce the requirements for constraining the wiring harness, making the wiring in the battery pack 100 cleaner and tidier, improving the safety and reliability of the battery pack 100, and reducing the safety hazards of the battery pack 100.

[0045] In some embodiments of the present application, referring to Figures 3 and 4, a plurality of battery packs 1 are stacked in a first direction (refer to the up and down direction shown in Figure 3), and each battery pack 1 includes two cell groups 11 spaced apart along a third direction. Each cell group 11 includes a plurality of cell groups 111 arranged in the second direction, which can increase the number of cell groups 111 in the battery pack 100, arrange the cell groups 111 more compactly in the battery pack 100, improve the space utilization of the battery pack 100 in the first direction, further increase the energy density of the battery pack 100, improve the cruising range, and meet the user's usage needs. The third direction, the second direction and the first direction are perpendicular to each other.

[0046] For example, there may be two, three, or four battery packs 1 stacked in the first direction.

[0047] In an embodiment of the present application, referring to Figures 1 and 2 , the battery pack 100 further includes a BDU module 2 (battery energy distribution unit), which is arranged on one side of the second direction (the front-to-back direction shown in Figure 1 ) of the plurality of battery groups 1. In two adjacent battery groups 1 in the first direction, the total current input pole 12 of one battery group 1 and the total current output pole 13 of the other battery group 1 are both connected to the BDU module 2 so that the two adjacent battery groups 1 are connected in series through the BDU module 2, and the second direction is perpendicular to the first direction.

[0048] It can be understood that, in two adjacent battery packs 1 in the first direction, the total current input pole 12 of one battery pack 1 is connected to the relay protection module, and the total current output pole 13 is directly connected to the main positive relay of the BDU module 2; the total current output pole 13 of the other battery pack 1 is connected to the relay protection module, and the total current input pole 12 is directly connected to the main negative relay of the BDU module 2. This can enable the stacked multi-layer battery packs 1 to be connected within the BDU module 2 while meeting the power requirements, thereby simplifying the high-voltage connection structure of the stacked battery pack 100 and improving the safety of the battery pack 100.

[0049] It should be noted that the relay protection module is a relay other than the main positive relay or the main negative relay. The high-voltage circuit connection must be connected through the relay protection module, the main positive relay, and the main negative relay. In addition, the high-voltage circuit can be disconnected through the relay protection module, the main positive relay and the main negative relay, the main negative relay's fuse, the active and passive integrated fuse, or the main circuit disconnect unit in another BDU module 2.

[0050] In a specific example, referring to Figures 2 and 6, there are two battery groups 1, and the two battery groups 1 are respectively a first battery group 17 and a second battery group 18. The first battery group 17 and the second battery group 18 are stacked in the up and down direction (as shown in Figure 6), and the first battery group 17 is located on the upper side of the second battery group 18. The total current input pole 12 includes a first total current input pole 121 of the first battery group 17 and a second total current input pole 122 of the second battery group 18. The total current output pole 13 includes a first total current output pole 131 of the first battery group 17 and a second total current output pole 132 of the second battery group 18. The first total current input pole 121 and the second total current output pole 132 are both connected to the relay protection module, and the first total current output pole 131 and the second total current input pole 122 are directly connected to the BDU module 2, thereby realizing the first battery group 17 and the second battery group 18 being connected in series through the BDU module 2.

[0051] Of course, the present application is not limited to this. Two adjacent battery groups 1 in the first direction can also be connected in parallel through the BDU module 2. It can be understood that the total current input pole 12 and the total current output pole 13 of the two adjacent battery groups 1 can be directly connected to the BDU module 2; or the total current input pole 12 and the total current output pole 13 of one battery group 1 in the two adjacent battery groups 1 can be connected to the relay protection module, and the total current input pole 12 and the total current output pole 13 of the other battery group 1 can be directly connected to the BDU module 2.

[0052] In some embodiments of the present application, referring to FIG5 , multiple battery cells 111 in each battery cell group 11 are connected in series, and multiple battery cell groups 11 in the same battery pack 1 are connected in series, thereby connecting all battery cells 111 in the same battery pack 1 in series, ensuring the layout of the high-voltage circuit of the battery pack 100.

[0053] Specifically, referring to Figures 1 and 3 , two adjacent battery cells 111 in each battery cell group 11 are connected in series via a connecting piece 16. The connecting piece 16 is located at one end of the battery cell group 11 along the second direction, and both ends of the connecting piece 16 in the length direction are respectively connected to the positive or negative electrodes of two adjacent battery cells 111 in the same battery cell group 11, thereby achieving a series connection of the multiple battery cells 111 in each battery cell group 11. Of course, the present application is not limited thereto, and the multiple battery cells 111 in each battery cell group 11 can also be electrically connected via a busbar.

[0054] In some embodiments of the present application, referring to FIG5 , each battery cell 111 has a positive electrode and a negative electrode located at both ends of a third direction, and the positive electrodes of two adjacent battery cells 111 in the same battery cell group 11 are located at opposite ends of the third direction, so that the positive electrode and negative electrode in each battery cell 111 are respectively located at both ends of the third direction, which can increase the spacing between different electrodes, prevent the risk of high-voltage arc breakdown, facilitate the arrangement and assembly of multiple battery cells 111, ensure the reliability of the assembly of the battery cells 111, and facilitate the connecting piece 16 to connect two adjacent battery cells 111 in the same battery cell group 11 in series.

[0055] In some embodiments of the present application, referring to FIG5 , each battery cell 111 has a positive electrode and a negative electrode arranged at both ends of a third direction, and the two adjacent battery cell groups 11 in the same battery pack 1 are respectively the first battery cell group and the second battery cell group, and the two battery cells 111 opposite to each other in the third direction of the first battery cell group and the second battery cell group are respectively the first battery cell and the second battery cell, and the positive electrodes of the first battery cell and the second battery cell are located at opposite ends of the third direction, which can stagger the total current input electrode 12 and the total current output electrode 13 of the same battery pack 1, simplify the design difficulty of the BDU module 2, reduce the high voltage risk on the side of the battery pack 1 close to the BDU module 2, and improve the safety and reliability of the battery pack 100.

[0056] In an embodiment of the present application, referring to FIG3 , two adjacent cell groups 11 in the same battery pack 1 are connected via a first connecting bar 14, thereby reducing the number of interfaces for electrically connecting the BDU module 2 to multiple battery packs 1 and the number of wiring between the BDU module 2 and multiple battery packs 1, thereby reducing the risk of high-voltage breakdown. It is understandable that by connecting two adjacent cells 111 in the same cell group 11 in series via the connecting piece 16, and connecting two adjacent cell groups 11 in the same battery pack 1 in series via the first connecting bar 14, all cells 111 in the same battery pack 1 are connected in series, thereby ensuring the layout of the high-voltage circuit of the battery pack 100. In an embodiment of the present application, the first connecting bar 14 is a metal conductive member. For example, the second connecting bar 15 can be a copper bar, an aluminum bar, or a copper-aluminum composite member.

[0057] In an embodiment of the present application, as shown in FIG3 , the first connecting row 14 is located on the side of the battery pack 1 away from the BDU module 2, and the extension directions (refer to the third direction shown in FIG3 ) of the corresponding first connecting rows 14 in the multiple battery packs 1 are consistent, and the two ends of the length direction (refer to the third direction shown in FIG3 ) are flush and arranged relative to each other in the first direction, thereby avoiding the horizontal and vertical staggered layout between the first connecting rows 14 corresponding to the multiple battery packs 1, ensuring sufficient electrical spacing, effectively reducing the electrical safety risks under various safety abuse test conditions, and improving the safety and reliability of the battery pack 100.

[0058] In an embodiment of the present application, referring to Figures 1 and 2 , the total current input pole 12 and the total current output pole 13 of each battery group 1 are both located at one end of the battery group 1 close to the BDU module 2, which can facilitate the connection of the total current input pole 12 and the total current output pole 13 of each battery group 1 with the BDU module 2, ensuring that two adjacent battery groups 1 in the first direction are connected in series through the BDU module 2, simplifying the routing between the BDU module 2 and multiple battery groups 1, and facilitating the high-voltage circuit layout of the battery pack 100.

[0059] In a specific example, referring to Figure 6, there are two battery groups 1, and the two battery groups 1 are respectively a first battery group 17 and a second battery group 18. The first battery group 17 and the second battery group 18 are stacked in the up and down direction (as shown in Figure 6), and the first battery group 17 is located on the upper side of the second battery group 18. The total current input pole 12 includes a first total current input pole 121 of the first battery group 17 and a second total current input pole 122 of the second battery group 18. The total current output pole 13 includes a first total current output pole 131 of the first battery group 17 and a second total current output pole 132 of the second battery group 18. The first total current input pole 121 and the second total current output pole 132 are both connected to the BDU module 2 so that the first battery group 17 and the second battery group 18 are connected in series through the BDU module 2.

[0060] In the example shown in Figures 5 and 6, the current flows from the BDU module 2 through the second current total input pole 122 of the second battery group 18 into a cell group 11 of the second battery group 18, powering the cell 111. Through the connection of the first connecting row 14 of the second battery group 18, the current flows from one cell group 11 to the adjacent cell group 11, and then flows back to the BDU module 2 through the second current total output pole 132 of the second battery group 18. The adjacent first battery group 17 and the second battery group are connected through the relay protection module of the BDU module 2. 18 are connected in series, and the current flows from the relay protection module through the first current total input pole 121 of the first battery group 17 into a battery cell group 11 of the first battery group 17 to power the battery cell 111. Through the connection of the first connecting row 14 of the first battery group 17, the current flows from one battery cell group 11 to the adjacent battery cell group 11, and then returns to the BDU module 2 through the first current total output pole 131 of the first battery group 17, realizing the high-voltage circuit of the battery pack 100, complying with the electrical safety design, and ensuring the safety and reliability of the battery pack 100.

[0061] In some embodiments of the present application, the BDU module 2 includes a relay protection module. In two adjacent battery groups 1, the total current input pole 12 of one battery group 1 and the total current output pole 13 of the other battery group 1 are both connected to the relay protection module so that the two adjacent battery groups 1 are connected or disconnected through the relay protection module.

[0062] Specifically, the relay protection module includes a static contact, a moving contact and a driving member. The static contact includes a first static contact and a second static contact. In two adjacent battery groups 1, the total current input pole 12 of one battery group 1 is electrically connected to the first static contact, and the total current output pole 13 of the other battery group 1 is electrically connected to the second static contact. The moving contact can be driven by the driving member and has a first position and a second position. In the first position, the moving contact is in contact with both the first static contact and the second static contact, and the moving contact is connected to the first static contact, the second static contact and the two adjacent battery groups 1. In the second position, the moving contact is spaced apart from at least one of the first static contact and the second static contact, and the moving contact is disconnected from at least one of the first static contact and the second static contact.

[0063] It can be understood that when the relay protection module receives a high-level signal (typical value 5V), the driving member drives the moving contact to move to the first position in the direction close to the static contact, and the moving contact contacts both the first static contact and the second static contact. The moving contact and the static contact are closed, and the first static contact, the moving contact, the second static contact and the two adjacent battery packs 1 are connected to realize the electrical connection between the two adjacent battery packs 1; when the relay protection module receives a low-level signal (typical value 0V), the driving voltage of the driving member is disconnected, and the moving contact moves to the second position in the direction away from the static contact. The moving contact is spaced apart from at least one of the first static contact and the second static contact, and the moving contact and the static contact are disconnected, actively disconnecting the electrical connection between the two adjacent battery packs 1. When thermal runaway or electrolyte leakage occurs, a current loop cannot be formed, which can slow down the speed of thermal runaway fire to a certain extent, reduce the severity of thermal runaway, and improve safety and reliability.

[0064] In other embodiments of the present application, a switching device is provided in the BDU module 2. In two adjacent battery groups 1, the total current input pole 12 of one battery group 1 and the total current output pole 13 of the other battery group 1 are both connected to the switching device so that the two adjacent battery groups 1 are connected or disconnected through the switching device. The structure is simple, the assembly is convenient, the control logic is simpler, and the reliability is higher.

[0065] In other embodiments of the present application, in two adjacent battery packs 1, the total current input pole 12 of one battery pack 1 and the total current output pole 13 of the other battery pack 1 can be directly connected through a conductive bus outside the BDU module 2 without passing through the BDU module 2, which can reduce the difficulty of assembling the battery pack 100.

[0066] In an embodiment of the present application, as shown in Figures 1 and 3 , the battery pack 100 further includes a rear-drive high-voltage port 3 . The rear-drive high-voltage port 3 is located on a side of the plurality of battery packs 1 away from the BDU module 2 and is connected to the BDU module 2 via a second connecting bar 15 . The end of the rear-drive high-voltage port 3 away from the second connecting bar 15 is connected to the rear-drive motor control. The rear-drive motor control can be driven via the second connecting bar 15 to provide energy, thereby charging the battery pack 100 via the second connecting bar 15 . Combined with the front-drive high-voltage port of the battery pack 100 , both the front-drive high-voltage port and the rear-drive high-voltage port 3 can simultaneously charge the battery pack 100 . The provision of the second connecting bar 15 can reduce the number of external connections on the vehicle 1000 , simplify the wiring harness layout of the vehicle 1000 , and improve the efficiency of assembly and disassembly of the battery pack 100 . In an embodiment of the present application, the second connecting bar 15 is a metal conductive member, for example, a copper bar, an aluminum bar, or a copper-aluminum composite member.

[0067] In an embodiment of the present application, referring to Figures 3 and 5 , the projections of the first connecting row 14 and the second connecting row 15 on a plane perpendicular to the first direction do not intersect, so that the electrical gap between the first connecting row 14 and the second connecting row 15 can be reasonably controlled, avoiding the staggered layout of the first connecting row 14 and the second connecting row 15, making the wiring clean and tidy, reducing the high-voltage risk of the battery pack 100, ensuring the electrical safety of the battery pack 100, and also improving the EMC (electromagnetic compatibility) test reliability capability.

[0068] In an embodiment of the present application, referring to FIG5 , the layout of the battery cells 111 of multiple battery packs 1 is the same, which can ensure the consistency of the stacking assembly of the battery cells 111, reduce design and production materials, avoid increasing process design and control requirements, reduce the production risk of the battery pack 100, and speed up the production rhythm and improve production efficiency. It should be noted that the layout of the battery cells 111 of multiple battery packs 1 is the same, which means that the multiple battery packs 1 are consistent in the arrangement, combination and connection method of the battery cells 111. In a specific example, referring to Figure 5, there are two battery packs 1, and the two battery packs 1 are respectively a first battery group 17 and a second battery group 18. The first battery group 17 and the second battery group 18 are stacked in the up and down directions. The first battery group 17 and the second battery group 18 each include two battery cell groups 11 spaced apart along the third direction. Each battery cell group 11 includes a plurality of battery cells 111 arranged in the second direction, and the number of battery cells 111 in each battery cell group 11 is the same. The positive poles of two adjacent battery cells 111 in the same battery cell group 11 are located at opposite ends of the third direction, the positive poles of the two battery cells 111 opposite to each other in the up and down direction are located at one end of the two battery cells 111 along the third direction, and the negative poles of the two battery cells 111 opposite to each other in the up and down direction are located at the other end of the two battery cells 111 along the third direction.

[0069] As shown in FIG. 7 , the present application also proposes a vehicle 1000 having the battery pack 100 according to the above embodiment.

[0070] According to the vehicle 1000 of the embodiment of the present application, by being provided with the above-mentioned battery pack 100, the battery pack 1 includes two battery cell groups 11 arranged at intervals along the third direction, and the two acquisition circuit boards 4 correspond one-to-one to the two battery cell groups 11 and are respectively located on the side of the two battery cell groups 11 close to each other. This can simplify the daisy chain line length of the acquisition circuit board 4, reduce the length of the low-voltage wiring harness, and relatively reduce the requirements for constraining the wiring harness, making the wiring in the battery pack 100 cleaner and tidier, thereby improving the safety and reliability of the battery pack 100 and reducing the safety hazards of the battery pack 100.

[0071] Other structures and operations of the battery pack 100 and the vehicle 1000 according to the embodiments of the present application are well known to those skilled in the art and will not be described in detail here.

[0072] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0073] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A battery pack (100), wherein: include: A battery pack (1), the battery pack (1) comprising two battery cell groups (11) spaced apart along a third direction, each of the battery cell groups (11) comprising a plurality of battery cells (111) arranged in a second direction, the second direction being perpendicular to the third direction; A collection circuit board (4), wherein the collection circuit boards (4) are multiple, each battery cell group (11) corresponds to at least one of the collection circuit boards (4), and the corresponding multiple collection circuit boards (4) in the same battery pack (1) are respectively located on one side of two battery cell groups (11) close to each other.

2. The battery pack (100) according to claim 1, wherein: The battery pack (1) is a plurality of batteries stacked in a first direction, and the third direction, the second direction and the first direction are perpendicular to each other.

3. The battery pack (100) according to claim 2, wherein: Also includes: A BDU module (2) is provided on one side of a second direction of the plurality of battery packs (1); in two adjacent battery packs (1), a total current input pole (12) of one battery pack (1) and a total current output pole (13) of the other battery pack (1) are both connected to the BDU module (2) so that the two adjacent battery packs (1) are connected in series through the BDU module (2); the second direction is perpendicular to the first direction.

4. The battery pack (100) according to claim 3, wherein: The layout of the battery cells (111) of the plurality of battery packs (1) is the same.

5. The battery pack (100) according to any one of claims 1 to 4, wherein: The multiple battery cells (111) in each battery cell group (11) are connected in series, and the multiple battery cell groups (11) in the same battery pack (1) are connected in series.

6. The battery pack (100) according to any one of claims 1 to 4, wherein: Each battery cell (111) has a positive electrode and a negative electrode located at two ends of the third direction, and the positive electrodes of two adjacent battery cells (111) in the same battery cell group (11) are located at opposite ends of the third direction.

7. The battery pack (100) according to any one of claims 1 to 4, wherein: Each of the battery cells (111) has a positive electrode and a negative electrode arranged at two ends of the third direction; two adjacent battery cell groups (11) in the same battery pack (1) are respectively a first battery cell group and a second battery cell group; two battery cells (111) facing each other in the third direction of the first battery cell group and the second battery cell group are respectively a first battery cell and a second battery cell; and the positive electrodes of the first battery cell and the second battery cell are located at opposite ends of the third direction.

8. The battery pack (100) according to claim 3, wherein: Two adjacent battery cell groups (11) in the same battery group (1) are connected via a first connecting row (14).

9. The battery pack (100) according to claim 8, wherein: The first connecting row (14) is located on a side of the battery pack (1) facing away from the BDU module (2); the corresponding first connecting rows (14) in a plurality of battery packs (1) have the same extension direction, are flush at both ends in the length direction, and are arranged opposite to each other in the first direction.

10. The battery pack (100) according to claim 3, wherein: The total current input pole (12) and the total current output pole (13) of each battery pack (1) are both located at one end of the battery pack (1) close to the BDU module (2).

11. The battery pack (100) according to claim 8, wherein: The battery pack (100) further includes: A rear-drive high-voltage port (3) is provided on a side of the plurality of battery packs (1) away from the BDU module (2) and is connected to the BDU module (2) via a second connection row (15).

12. The battery pack (100) according to claim 11, wherein: The projections of the first connecting row (14) and the second connecting row (15) on a plane perpendicular to the first direction do not intersect.

13. A vehicle (1000), wherein: Comprising a battery pack (100) according to any one of claims 1 to 12.

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