Power battery pack and automobile

Abstract

The power battery pack comprises a box body, a high-voltage electrical assembly and a low-voltage electrical assembly, the high-voltage electrical assembly comprises a plurality of battery modules, a battery pack high-voltage distribution box BDU module, a high-voltage connector, a fuse assembly, a high-voltage copper bar and an integrated busbar CCS assembly, the interior of each battery module is in high-voltage electrical connection through a CCS assembly and is connected in series through a high-voltage copper bar, the BDU module is arranged at the first end of the shell structure in the second direction and located on the first side of the multiple battery modules, and the BDU module is in strong current connection with the multiple battery modules through the high-voltage copper bar and located on the second side of the multiple battery modules. The fuse assembly is arranged at the first end, in the second direction, of the shell structure and electrically connected with the BDU module through the high-voltage copper bar, the high-voltage connectors are arranged on the two sides, in the second direction, of the multiple battery modules and penetrate through the shell structure to the outside of the box body, and the high-voltage connectors are electrically connected with the BDU module and / or the fuse assembly through the high-voltage copper bar.

Description

Technical Field

[0001] The utility model relates to the technical field of power batteries, and in particular to a power battery pack and a car. Background Art

[0002] With the continuous development of electric vehicles, the performance requirements for electric vehicles are getting higher and higher. Power batteries are the core components of electric vehicles. The energy density of power batteries directly determines the endurance and various driving indicators of electric vehicles. It is one of the core indicators that electric vehicles pay the most attention to.

[0003] The energy density of a power battery refers to the amount of energy stored per unit volume. There are many ways to increase the energy density, such as changing the material composition, using different materials to increase the energy density, improving the battery pack structure, and installing more cells in the same volume to increase the energy density. Since it is difficult to increase the energy density by changing the battery material, the characteristics of the battery will also change after the material is changed. It needs to undergo rigorous stability and hazard testing, has a long development cycle, and requires the power system of the entire vehicle to be changed accordingly to match the battery performance. Therefore, relatively speaking, how to improve the battery pack structure, increase space utilization and integration, and thus increase the energy density of the power battery is a problem that needs to be solved urgently. Utility Model Content

[0004] The present application provides a power battery pack and a vehicle, which use blade batteries to form long and large cells to fully utilize the space in the battery pack, improve space utilization and integration, and thus increase the energy density of the power battery.

[0005] In a first aspect, according to an embodiment of the present application, a power battery pack is provided, comprising:

[0006] A box body, the box body comprising a lower shell and an upper shell, the lower shell and the upper shell are buckled with each other to form a shell structure with a hollow interior;

[0007] A high-voltage electrical component is arranged in the shell structure, and the high-voltage electrical component includes a plurality of battery modules, a battery pack high-voltage distribution box BDU module, a high-voltage connector, a fuse assembly, a high-voltage copper busbar and an integrated busbar CCS assembly. The interior of each battery module is electrically connected at high voltage through the CCS assembly. The plurality of battery modules are distributed in two columns along the first direction and are connected in series through the high-voltage copper busbar. The BDU module is arranged at the first end of the shell structure in the second direction and is located on the first side of the plurality of battery modules. The BDU module is strongly electrically connected to the plurality of battery modules through the high-voltage copper busbar. The fuse assembly is arranged at the first end of the shell structure in the second direction and is electrically connected to the BDU module through the high-voltage copper busbar. The high-voltage connector is arranged on both sides of the plurality of battery modules along the second direction and is passed through the shell structure to the outside of the box. The high-voltage connector is electrically connected to the BDU module and / or the fuse assembly through the high-voltage copper busbar.

[0008] A low-voltage electrical component is arranged in the housing structure, the low-voltage electrical component includes a battery management system BMS module, a low-voltage wiring harness and a low-voltage connector, the BMS module is arranged at the first end of the housing structure in the second direction, and is located on the first side of the plurality of battery modules, the fuse assembly is arranged between the BDU module and the BMS module in the first direction, the low-voltage connector is arranged on a side of the box body close to the BMS module, and passes through the housing structure to the outside of the box body, and the BMS module is electrically connected to the low-voltage connector, the BDU module and the plurality of battery modules through the low-voltage wiring harness;

[0009] The first direction and the second direction are perpendicular to each other.

[0010] In some embodiments of the present application, each of the battery modules includes a plurality of short blade cells arranged in parallel along the first direction, and the plurality of short blade cells form a module-free CTP battery module through the CCS assembly.

[0011] In some embodiments of the present application, the number of the battery modules is four, the high-voltage copper busbar extending along the second direction is provided in the middle of the shell structure in the first direction, and the four battery modules are symmetrically arranged on both sides of the high-voltage copper busbar along the first direction.

[0012] In some embodiments of the present application, the BDU module integrates a main positive relay, a main negative relay, a fast charging positive relay, a fast charging negative relay, a pre-charging relay, a pre-charging resistor, a main fuse, a current sensor and a power distribution unit PDU.

[0013] In some embodiments of the present application, the BDU module is provided with multiple high-voltage functional interfaces, and the high-voltage connector includes a front-drive connector, a rear-drive connector, a fast-charging connector, a PTC&AC connector, and a DCDC&OBC connector. The front-drive connector, the rear-drive connector, the fast-charging connector, the PTC&AC connector, and the DCDC&OBC connector are connected to the multiple high-voltage functional interfaces through the high-voltage copper bus, and the rear-drive connector, the fast-charging connector, and the PTC&AC connector are arranged on the first side of the multiple battery modules along the second direction, and the front-drive connector and the DCDC&OBC connector are arranged on the second side of the multiple battery modules along the second direction.

[0014] In some embodiments of the present application, the fuse assembly includes a first fuse and a second fuse, the first fuse is arranged on the front drive discharge circuit of the power battery pack, the second fuse is arranged on the rear drive discharge circuit of the power battery pack, and the first fuse and the second fuse are arranged in sequence along the third direction;

[0015] The third direction is perpendicular to the first direction and the second direction.

[0016] In some embodiments of the present application, a maintenance window is provided on a surface of one side of the box body close to the fuse assembly, and a setting position of the maintenance window corresponds to a setting position of the first fuse and the second fuse.

[0017] In some embodiments of the present application, the BMS module includes a controller mainboard, a first collector slave board, and a second collector slave board, and the controller mainboard, the first collector slave board, and the second collector slave board are sequentially arranged along a third direction through a fixing bracket;

[0018] The third direction is perpendicular to the first direction and the second direction.

[0019] In some embodiments of the present application, every two active front-end AFE chips of the first collector slave board and the second collector slave board are electrically connected to one battery module, the number of collection channels of every two AFE chips is m, the number of battery cells of each battery module is n, and m≥n.

[0020] In a second aspect, according to an embodiment of the present application, a car is provided, comprising: the power battery pack described in the first aspect.

[0021] The beneficial effects of the embodiments of the present application are as follows:

[0022] The use of blade battery long strips of large cells fully utilizes the space inside the battery pack, improves space utilization and integration, and eliminates high-voltage components to a certain extent. On the basis of safety, it greatly improves the volume energy density of the power battery, and solves the problems of low integration and low space utilization in the high-voltage electrical part and low-voltage electrical part of the battery pack electrical system in the prior art. At the same time, in the battery pack, a single high-voltage module is connected to the high-voltage electrical system through the CCS component, and each high-voltage module is connected through a high-voltage copper bus, so that the length of the copper bus between each high-voltage module is short, which reduces the cost as much as possible. The BDU module in the battery pack integrates the function of PDU, and most of the high-voltage components are arranged in the battery pack, which saves external space, reduces the EMC risk of the whole vehicle, and has a high degree of integration of the battery pack. In addition, in the low-voltage electrical design, two collectors are used to collect the voltage and temperature of the module end from the board, and every two AFE chips collect the voltage and temperature of a high-voltage module, which can maximize the utilization of the board resources as much as possible, and also avoid the existence of a cross-connected copper bus in an AFE collection, and avoid the burning of the board. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 A top view of the arrangement of high and low voltage components of a power battery pack provided in an embodiment of the present application;

[0025] Figure 2 A schematic diagram of the arrangement of battery modules of a power battery pack provided in an embodiment of the present application;

[0026] Figure 3 A left view showing the arrangement of high and low voltage components of a power battery pack provided in an embodiment of the present application;

[0027] Explanation of the accompanying drawings: 1 is the lower shell, 2 is the battery module, 3 is the BDU module, 4 is the fuse assembly, 41 is the first fuse, 42 is the second fuse, 5 is the high-voltage copper bus, 6 is the CCS assembly, 7 is the BMS module, 71 is the controller main board, 72 is the first collector slave board, 73 is the second collector slave board, 74 is the fixing bracket, 8 is the low-voltage wiring harness, 9 is the low-voltage connector, 101 is the front drive connector, 102 is the rear drive connector, 103 is the fast charging connector, 104 is the PTC&AC connector, and 105 is the DCDC&OBC connector. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present utility model, not all of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present utility model.

[0029] It should be noted that the terms "including" and "having" and any variations thereof in the embodiments of the present application and the accompanying drawings are intended to cover non-exclusive inclusions. For example, a series of structures are included, which is not limited to the listed structures, but may optionally include structures not listed, or may optionally include other components inherent to these structures.

[0030] The present application discloses a power battery pack, which is described in detail below.

[0031] Figure 1 , Figure 2 A power battery pack provided according to an embodiment of the present application is shown. Figure 1 and Figure 2 As shown, the power battery pack mainly includes a box body, high-voltage electrical components and low-voltage electrical components. The box body is a protective shell of the power battery pack, and the high-voltage electrical components and the low-voltage electrical components are placed in the box body.

[0032] In the embodiments of the present application, Figure 1 and Figure 2 As shown, the box includes a lower shell 1 and an upper shell (not shown in the figure), the lower shell 1 and the upper shell are buckled together to form an internal hollow shell structure, and the high-voltage electrical components and the low-voltage electrical components are arranged in the shell structure. In some specific implementations, the box composed of the lower shell 1 and the upper shell is a rectangular parallelepiped structure. In addition, a plurality of mounting ears are arranged on the outer surface of the lower shell 1, so that the power battery pack is fixedly installed at a specified position through the mounting ears.

[0033] In the embodiments of the present application, Figure 1 and Figure 2As shown, the high-voltage electrical components in the power battery pack include multiple battery modules 2, a battery pack high-voltage distribution box (Battery Distribution Unit, BDU) module 3, a high-voltage connector, a fuse assembly 4, a high-voltage copper bus 5 and an integrated busbar (Cells Contact System, CCS) assembly 6. The entire power battery pack is divided into multiple high-voltage modules (i.e., battery modules 2), and the interior of each battery module 2 is connected to a high-voltage electrical connection through a CCS assembly 6. Multiple battery modules 2 are distributed in two columns along the first direction, and multiple battery modules 2 are connected in series through high-voltage copper bus 5. In detail, the high-voltage copper bus 5 is arranged between the two columns of battery modules 2, and the battery modules 2 closely arranged on both sides are connected in series. The BDU module 3 and the fuse assembly 4 are both arranged at the first end of the shell structure in the second direction, and are located on the first side of the multiple battery modules 2. In the embodiment of the present application, the first side of the multiple battery modules 2 and the first end of the shell structure in the second direction refer to the rear compartment end of the power battery pack, and the second side of the multiple battery modules 2 refers to the front compartment end of the power battery pack. The BDU module 3 is strongly electrically connected to the multiple battery modules 2 through the high-voltage copper busbar 5, and the fuse assembly 4 is electrically connected to the BDU module 3 through the high-voltage copper busbar 5. The high-voltage connector, as an interface for connecting the power battery pack with external devices, is arranged on both sides of the multiple battery modules 2 along the second direction, and is penetrated through the shell structure to the outside of the box. The high-voltage connector is electrically connected to the BDU module 3 and / or the fuse assembly 4 through the high-voltage copper busbar 5, that is, the high-voltage connector is directly electrically connected to the BDU module 3 through the high-voltage copper busbar 5, or is electrically connected to the BDU module 3 through the high-voltage copper busbar 5 and the fuse assembly 4.

[0034] Among them, the first direction is the width direction of the power battery pack case, the second direction is the long side direction of the power battery pack case, and the third direction is the thickness direction of the power battery pack case. The first direction, the second direction and the third direction are perpendicular to each other, but it should be noted that the "vertical" in the embodiment of the present application is not absolutely vertical, and can be 90° or 90°±10°.

[0035] In some specific embodiments, Figure 2As shown, each battery module 2 includes a number of short blade cells arranged in parallel along the first direction, and a number of short blade cells form a module-free CTP battery module through the CCS assembly 6. The blade battery cooperates with the CTP process to maximize the structural advantages of the blade battery's long and large cells, which can effectively improve the battery pack grouping efficiency, reduce space waste, and improve the volume energy density of the power battery. Furthermore, the number of battery modules 2 is four, and the entire power battery pack composed of a number of short blade cells is divided into four high-voltage modules. The shell structure is provided with a high-voltage copper bus 5 extending along the second direction in the middle of the first direction. The four battery modules 2 are symmetrically arranged on both sides of the high-voltage copper bus 5 along the first direction, and the short blade cells are extended along the first direction. Such an arrangement further improves the battery pack grouping efficiency and greatly reduces the overall occupied space.

[0036] In other specific embodiments, the BDU module is integrated with a main positive relay, a main negative relay, a fast charge positive relay, a fast charge negative relay, and a pre-charge relay, which are used for energy transmission between the power battery pack and external high-voltage components. It is also integrated with a pre-charge resistor, a main fuse, and a current sensor to complete energy transmission by controlling the opening and closing of the relay. In addition, the BDU module in the power battery pack is also integrated with a power distribution unit PDU to realize the function of high-voltage power distribution. Most of the high-voltage components are arranged in the power battery pack, saving external space. The power battery pack is a sealed metal box, which reduces the EMC (Electromagnetic Compatibility) risk of the whole vehicle, and the battery pack has a high overall integration. Furthermore, the BDU module is provided with multiple high-voltage functional interfaces, correspondingly, such as Figure 1 As shown, the high-voltage connector includes a front-drive connector 101, a rear-drive connector 102, a fast-charge connector 103, a PTC&AC connector 104 (an interface for connecting the heating system PTC and the AC power supply AC) and a DCDC&OBC connector 105 (an interface for connecting the on-board charger OBC and the high-low voltage converter DCDC). The front-drive connector 101, the rear-drive connector 102, the fast-charge connector 103, the PTC&AC connector 104 and the DCDC&OBC connector 105 are connected to multiple high-voltage functional interfaces through a high-voltage copper bus 5. At the same time, the rear-drive connector 102, the fast-charge connector 103 and the PTC&AC connector 104 are arranged on the first side of the multiple battery modules 2 along the second direction (i.e., the rear compartment end of the power battery pack), while the front-drive connector 101 and the DCDC&OBC connector 105 are arranged on the second side of the multiple battery modules 2 along the second direction (i.e., the front compartment end of the power battery pack).

[0037] In other specific embodiments, Figure 1 and Figure 3As shown, the fuse assembly 4 includes a first fuse 41 and a second fuse 42 arranged in sequence along the third direction. The first fuse 41 is arranged on the front drive discharge circuit of the power battery pack, and the second fuse 42 is arranged on the rear drive discharge circuit of the power battery pack. By arranging fuses on the front drive discharge circuit and the rear drive discharge circuit, it is ensured that the discharge circuit and the high-voltage load can be effectively protected under a large current impact. Furthermore, a maintenance window is arranged on the surface of one side of the box body close to the fuse assembly 4, and the setting position of the maintenance window corresponds to the setting position of the first fuse 41 and the second fuse 42, so that the rear drive fuse and the front drive fuse are arranged in the rear compartment and corresponding maintenance windows are set on the box body, which is convenient for repairing the fuses.

[0038] In the embodiments of the present application, Figure 1 and Figure 2 As shown, the low-voltage electrical components include a battery management system (BMS) module 7, a low-voltage wiring harness 8 and a low-voltage connector 9. The BMS module 7 is arranged at the first end of the shell structure in the second direction and is located on the first side of the multiple battery modules 2. The fuse assembly 4 is arranged between the BDU module 3 and the BMS module 7 in the first direction. The low-voltage connector 9 is arranged on one side of the box body close to the BMS module 7 and passes through the shell structure to the outside of the box body. The BMS module 7 is electrically connected to the low-voltage connector 9, the BDU module 3 and the multiple battery modules 2 through the low-voltage wiring harness 8.

[0039] In some specific embodiments, Figure 1 and Figure 3As shown, the BMS module 7 includes a controller mainboard 71 (i.e., Battery Management Unit, BMU, battery management unit), a first collector slave board 72 and a second collector slave board 73. The controller mainboard 71, the first collector slave board 72 and the second collector slave board 73 are sequentially arranged along the third direction through a fixed bracket 74. The controller mainboard 71, the first collector slave board 72, the second collector slave board 73, the BDU module 3, the battery module 2, and the low-voltage connector 9 are connected by a low-voltage harness 8 for real-time transmission of detection signals and control signals. Further, each two active front end (Active Front End, AFE) chips of the first collector slave board 72 and the second collector slave board 73 are electrically connected to a battery module 2. In the low-voltage electrical design of the present application, two collectors are used to collect module-side information from the board. The first collector from board 72 and the second collector from board 73 collect the voltage and temperature of a high-voltage module from every two AFE chips. The number of collection channels of every two AFE chips is m, and the number of battery cells in each battery module 2 is n, m≥n, m and n are both positive integers, and the difference between m and n takes the minimum value, so as to maximize the utilization of the board resources and solve the problem of low space utilization. At the same time, every two AFE chips collect the voltage and temperature of a high-voltage module to avoid the presence of a cross-connected copper bus in the collection of an AFE chip, thereby avoiding burning of the board.

[0040] An embodiment of the present application also discloses an automobile, including a power battery pack. The power battery pack is the power battery pack provided in the above embodiment, and its structure and principle are the same as those in the above embodiment. For a brief description, reference may be made to the corresponding content in the above power battery pack embodiment, which will not be repeated here.

[0041] In summary, the present application discloses a power battery pack and a car, which uses blade battery elongated large cells, fully utilizes the space in the battery pack, improves space utilization and integration, and saves high-voltage components to a certain extent. On the basis of safety, the volume energy density of the power battery is greatly improved, and the problems of low integration and low space utilization of the high-voltage electrical part and the low-voltage electrical part of the battery pack electrical system in the prior art are solved. At the same time, in the battery pack, a single high-voltage module is connected to the high-voltage electrical part through the CCS component, and each high-voltage module is connected through a high-voltage copper bus, so that the length of the copper bus between each high-voltage module is short, which reduces the cost as much as possible, and the BDU module in the battery pack integrates the function of PDU, and most of the high-voltage components are arranged in the battery pack, which saves external space, reduces the EMC risk of the whole vehicle, and has a high degree of integration of the battery pack. In addition, in the low-voltage electrical design, two collectors are used to collect the voltage and temperature of the module end from the board, and every two AFE chips collect the voltage and temperature of a high-voltage module, which can maximize the utilization of the board resources as much as possible, and also avoid the existence of a cross-connected copper bus in an AFE collection, and avoid burning of the board.

[0042] Those skilled in the art will understand that the drawings are only schematic diagrams of an embodiment, and the components in the drawings are not necessarily necessary for implementing the present invention. It should also be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0043] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. In addition, in the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present utility model and simplifying the description, and does 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 cannot be understood as a limitation on the present utility model.

[0044] Finally, it should be noted that the above-described embodiments are only specific implementation methods of the utility model, which are used to illustrate the technical solution of the utility model, rather than to limit it. The protection scope of the utility model is not limited thereto. Although the utility model is described in detail with reference to the above-mentioned embodiments, ordinary technicians in this field should understand that any technician familiar with the technical field can still modify the technical solution recorded in the above-mentioned embodiments within the technical scope disclosed by the utility model, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solution deviate from the spirit and scope of the technical solution of the embodiment of the utility model, and should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model shall be based on the protection scope described in the claims.

Claims

1. A power battery pack, characterized in that: include: A box body, the box body comprising a lower shell and an upper shell, the lower shell and the upper shell are buckled with each other to form a shell structure with a hollow interior; A high-voltage electrical component is arranged in the shell structure, and the high-voltage electrical component includes a plurality of battery modules, a battery pack high-voltage distribution box BDU module, a high-voltage connector, a fuse assembly, a high-voltage copper busbar and an integrated busbar CCS assembly. The interior of each battery module is electrically connected at high voltage through the CCS assembly. The plurality of battery modules are distributed in two columns along the first direction and are connected in series through the high-voltage copper busbar. The BDU module is arranged at the first end of the shell structure in the second direction and is located on the first side of the plurality of battery modules. The BDU module is strongly electrically connected to the plurality of battery modules through the high-voltage copper busbar. The fuse assembly is arranged at the first end of the shell structure in the second direction and is electrically connected to the BDU module through the high-voltage copper busbar. The high-voltage connector is arranged on both sides of the plurality of battery modules along the second direction and is passed through the shell structure to the outside of the box. The high-voltage connector is electrically connected to the BDU module and / or the fuse assembly through the high-voltage copper busbar. A low-voltage electrical component is arranged in the housing structure, the low-voltage electrical component includes a battery management system BMS module, a low-voltage wiring harness and a low-voltage connector, the BMS module is arranged at the first end of the housing structure in the second direction, and is located on the first side of the plurality of battery modules, the fuse assembly is arranged between the BDU module and the BMS module in the first direction, the low-voltage connector is arranged on a side of the box body close to the BMS module, and passes through the housing structure to the outside of the box body, and the BMS module is electrically connected to the low-voltage connector, the BDU module and the plurality of battery modules through the low-voltage wiring harness; The first direction and the second direction are perpendicular to each other.

2. The power battery pack according to claim 1, characterized in that: Each of the battery modules comprises a plurality of short blade cells arranged in parallel along the first direction, and the plurality of short blade cells form a module-free CTP battery module through the CCS assembly.

3. The power battery pack according to claim 2, characterized in that: There are four battery modules, and the high-voltage copper busbar extending along the second direction is disposed in the middle of the shell structure in the first direction. The four battery modules are symmetrically disposed on both sides of the high-voltage copper busbar along the first direction.

4. The power battery pack according to claim 1, characterized in that: The BDU module integrates a main positive relay, a main negative relay, a fast charging positive relay, a fast charging negative relay, a pre-charging relay, a pre-charging resistor, a main fuse, a current sensor and a power distribution unit PDU.

5. The power battery pack according to claim 1, characterized in that: The BDU module is provided with multiple high-voltage functional interfaces, and the high-voltage connector includes a front-drive connector, a rear-drive connector, a fast-charge connector, a PTC&AC connector and a DCDC&OBC connector. The front-drive connector, the rear-drive connector, the fast-charge connector, the PTC&AC connector and the DCDC&OBC connector are connected to the multiple high-voltage functional interfaces through the high-voltage copper bus, and the rear-drive connector, the fast-charge connector and the PTC&AC connector are arranged on the first side of the multiple battery modules along the second direction, and the front-drive connector and the DCDC&OBC connector are arranged on the second side of the multiple battery modules along the second direction.

6. The power battery pack according to claim 1, characterized in that: The fuse assembly includes a first fuse and a second fuse, wherein the first fuse is arranged on a front-drive discharge circuit of the power battery pack, and the second fuse is arranged on a rear-drive discharge circuit of the power battery pack, and the first fuse and the second fuse are arranged in sequence along a third direction; The third direction is perpendicular to the first direction and the second direction.

7. The power battery pack according to claim 6, characterized in that: A maintenance window is arranged on a surface of one side of the box body close to the fuse assembly, and a setting position of the maintenance window corresponds to a setting position of the first fuse and the second fuse.

8. The power battery pack according to claim 1, characterized in that: The BMS module includes a controller mainboard, a first collector slave board and a second collector slave board, wherein the controller mainboard, the first collector slave board and the second collector slave board are sequentially arranged along a third direction through a fixing bracket; The third direction is perpendicular to the first direction and the second direction.

9. The power battery pack according to claim 8, characterized in that: Every two active front-end AFE chips of the first collector slave board and the second collector slave board are electrically connected to one battery module. The number of collection channels of every two AFE chips is m, the number of battery cells of each battery module is n, and m≥n.

10. An automobile, characterized in that: include: A power battery pack as described in any one of claims 1 to 9.

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