Quick charging module, power distribution device, battery pack and electric equipment

Abstract

The utility model discloses a quick charging module, a power distribution device, a battery pack and electric equipment. The fast charging module comprises a shell, a fast charging fuse, a first relay, a second relay and a circuit board, the fast charging fuse, the first relay and the second relay are arranged side by side, all installed on the shell and used for being connected with a functional module of the power distribution device, the fast charging fuse is electrically connected with the first relay, and the circuit board is electrically connected with the first relay. The first relay and the second relay are electrically connected with the circuit board. According to the fast charging module, the power distribution device, the battery pack and the electric equipment provided by the embodiment of the invention, compared with a traditional relay and a fuse which are independent elements, the fast charging fuse, the first relay and the second relay can be mounted in the battery pack as a whole; therefore, the space size occupied by the fast charging fuse, the first relay and the second relay is reduced, the utilization rate of the internal space of the battery pack is improved, and the miniaturization of the battery pack is further realized.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and more specifically, to a fast charging module, a power distribution device, a battery pack and electrical equipment. Background Art

[0002] The power distribution device is a common device in the battery pack. The power distribution device can open and close the circuit to control the charging and discharging of the battery pack. In the related art, a fast charging module can be set in the power distribution device to realize the fast charging function. Generally, the fast charging module includes a variety of electrical components such as relays and fuses. However, these electrical components are independent components. When installed inside the battery pack, the space size is large, which affects the miniaturization of the battery pack. Utility Model Content

[0003] Embodiments of the present application provide a fast charging module, a power distribution device, a battery pack, and electrical equipment.

[0004] The fast charging module of certain embodiments of the present application is applied to a power distribution device, and the fast charging module includes a shell, a fast charging fuse, a first relay, a second relay and a circuit board. The fast charging fuse, the first relay and the second relay are arranged side by side and are all installed on the shell, and are all used to connect with the functional module of the power distribution device. The fast charging fuse is electrically connected to the first relay, and the first relay and the second relay are both electrically connected to the circuit board.

[0005] In some embodiments, the first relay and the second relay are both provided with a first plug-in piece, and the first plug-in piece is used to be electrically connected to the circuit board.

[0006] In some embodiments, the circuit board is a single-layer board.

[0007] The power distribution device of the battery pack of certain embodiments of the present application includes the fast charging module and the functional module described in any of the above embodiments, the functional module is arranged outside the shell and is electrically connected to the fast charging module, and the functional module and the fast charging module are used together to control the operation of the battery pack.

[0008] In some embodiments, the functional module includes a mounting shell, a conduction module, a pre-charging module and a battery management system. The mounting shell is provided with a housing cavity. The conduction module is accommodated in the housing cavity, and includes a main positive relay, a fuse, a main negative relay and a current acquisition unit, and the main positive relay, the fuse, the main negative relay and the current acquisition unit are electrically connected. The pre-charging module is accommodated in the housing cavity, and includes a pre-charging relay and a pre-charging resistor, and the pre-charging relay is electrically connected to the pre-charging resistor. The battery management system is accommodated in the housing cavity, and the circuit board, the conduction module and the pre-charging module are all electrically connected to the battery management system, and the battery management system is used to control the operation of the fast charging module, the conduction module and the pre-charging module.

[0009] In certain embodiments, the mounting shell includes a first side wall and a second side wall opposite to each other, the battery management system is disposed on the first side wall of the mounting shell, the shell includes a first side wall and a second side wall opposite to each other, the circuit board is disposed on the first side wall of the shell, and the first side wall of the mounting shell and the first side wall of the shell have the same orientation.

[0010] In certain embodiments, at least one of the main positive relay, the fuse, the main negative relay, the current acquisition unit, the pre-charge relay and the pre-charge resistor is provided with a second plug, and the second plug is used to be electrically connected to the battery management system.

[0011] In some embodiments, the functional module also includes a heating module, which is accommodated in the accommodating cavity and includes a heating relay and a heating fuse, the heating relay is electrically connected to the heating fuse, and the heating module is electrically connected to the battery management system, and the battery management system is used to control the operation of the heating module.

[0012] The battery pack of certain embodiments of the present application comprises a battery pack and a power distribution device as described in any of the above embodiments. The power distribution device is electrically connected to the battery pack and is used to control the charging and discharging of the battery pack.

[0013] In some embodiments, the power distribution device further includes a first copper bar, a second copper bar, and a third copper bar, and the first copper bar is electrically connected to the second copper bar through the third copper bar. The battery pack further includes a first connector and a second connector. The first connector is electrically connected to the functional module through the first copper bar. The second connector is electrically connected to the fast charging module through the second copper bar.

[0014] In certain embodiments, the fast charging module and the functional module are arranged side by side, and the second relay of the fast charging module is closer to the functional module than the fast charging fuse of the fast charging module.

[0015] In some embodiments, the mounting shell of the functional module includes a first side wall and a second side wall facing each other, and a peripheral wall between the first side wall and the second side wall, and the battery management system of the functional module is arranged on the first side wall. The first connector and the second connector are arranged side by side and are spaced apart from each other and opposite to the second side wall of the mounting shell.

[0016] In some embodiments, the mounting shell of the functional module includes a first side wall and a second side wall facing each other, and a peripheral wall between the first side wall and the second side wall, and the battery management system of the functional module is arranged on the first side wall. The first connector and the second connector are arranged side by side and are spaced apart from each other and opposite to the peripheral wall of the mounting shell.

[0017] The electrical equipment of certain embodiments of the present application includes the battery pack described in the above embodiments.

[0018] In the fast charging module, power distribution device, battery pack and electrical equipment of the embodiments of the present application, the fast charging fuse, the first relay and the second relay are all arranged in the shell, and the first relay and the second relay are arranged side by side, and the fast charging fuse is electrically connected to the first relay. Therefore, compared with traditional relays and fuses as independent components, the fast charging fuse, the first relay and the second relay can be installed in the battery pack as a whole, thereby reducing the space occupied by the fast charging fuse, the first relay and the second relay, improving the utilization rate of the internal space of the battery pack, and thus realizing the miniaturization of the battery pack.

[0019] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] 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:

[0021] Figure 1 It is a schematic diagram of the structure of an electrical device in some embodiments of the present application;

[0022] Figure 2 is a circuit diagram of a battery pack according to certain embodiments of the present application;

[0023] Figure 3 yes Figure 1 A three-dimensional structural schematic diagram of a portion of a battery pack in an electrical device shown;

[0024] Figure 4 yes Figure 3 A three-dimensional exploded schematic diagram of the battery pack shown.

[0025] Description of main component symbols:

[0026] Electrical equipment 2000, vehicle body 2100;

[0027] Battery pack 1000;

[0028] Power distribution device 100; battery pack 200; charge and discharge circuit 300; first connector 400; second connector 500; heating element 600;

[0029] Fast charging module 10, housing 11, first side wall 111, second side wall 113, fast charging fuse 12, first relay 13, second relay 14, circuit board 15, first plug 16;

[0030] Functional module 20, mounting shell 21, accommodating cavity 211, first side wall 213, second side wall 215, conduction module 23, main positive relay 231, fuse 233, main negative relay 235, current acquisition unit 237, pre-charge module 25, pre-charge relay 251, pre-charge resistor 253, battery management system 27, heating module 28, heating relay 281, heating fuse 283, second plug 29;

[0031] The first copper bar 30 ; the second copper bar 40 ; and the third copper bar 50 . DETAILED DESCRIPTION

[0032] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0033] 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 referred device or element 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.

[0034] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0035] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0036] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0037] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0038] See also Figure 1, the electric device 2000 of certain embodiments of the present application includes a battery pack 1000. The electric device 2000 includes but is not limited to vehicles, energy storage cabinets or aircraft. Specifically, in certain embodiments, when the electric device 2000 includes a vehicle, the vehicle includes a body 2100, and the battery pack 1000 is installed in the body 2100. The battery pack 1000 can provide a power source for the vehicle to enable the vehicle to operate normally. It should be noted that vehicles include but are not limited to pure electric vehicles, hybrid vehicles and other passenger vehicles or large-scale engineering vehicles whose working conditions are not very severe.

[0039] Among them, since the electric device 2000 in this embodiment includes the battery pack 1000, it can be understood that the electric device 2000 also includes at least the same beneficial effects as the battery pack 1000. Therefore, for the beneficial effects of the electric device 2000, please refer to the beneficial effects of the battery pack 1000 described below.

[0040] See also Figure 1 and Figure 2 The battery pack 1000 of the embodiment of the present application includes a battery pack 200 and a power distribution device 100. The power distribution device 100 is electrically connected to the battery pack 200, and the power distribution device 100 is used to control the charging and discharging of the battery pack 200.

[0041] The power distribution device 100 is disposed in the battery pack 1000 and is electrically connected to the battery group 200. Thus, the power distribution device 100 can realize functions such as charge and discharge control, temperature monitoring and protection (including overcharge protection, over-discharge protection and short-circuit protection, etc.) of the battery group 200, thereby improving the stability and reliability of the battery pack 1000 in supplying power to the power-consuming device 2000 and ensuring the normal operation of the power-consuming device 2000. It is understandable that the power distribution device 100 can be designed to match the different power-consuming devices 2000 to meet the use requirements of different power-consuming devices 2000.

[0042] In some embodiments, the battery pack 1000 may include at least one battery pack 200. The number of battery packs 200 in the battery pack 1000 may be adaptively adjusted according to different application scenarios of the battery pack 1000. Specifically, the battery pack 200 may include multiple batteries, and the number of batteries in the battery pack 200 may be adaptively adjusted according to the application scenario and capacity of the battery pack 200. It should be noted that in some embodiments, when the battery pack 200 includes multiple batteries, the multiple batteries can be connected in series, in parallel or in a mixed manner, and the mixed manner means that multiple batteries are both in series and in parallel. Among them, since the battery pack 1000 in this embodiment includes a power distribution device 100 and at least one battery pack 200, it can be understood that the battery pack 1000 at least also includes the same beneficial effects as the power distribution device 100 and the battery pack 200. Therefore, for the beneficial effects of the battery pack 1000, please refer to the beneficial effects of the power distribution device 100 below.

[0043] See also Figure 2 and Figure 3 In some embodiments of the present application, the power distribution device 100 of the battery pack includes a fast charging module 10 and a functional module 20. The functional module 20 is electrically connected to the fast charging module 10, and the functional module 20 and the fast charging module 10 are used together to control the operation of the battery pack 1000. It should be noted that in some embodiments, the power distribution device 100 may include but is not limited to a battery disconnect unit (Battery Disconnect Unit, BDU) and a high-voltage power distribution unit (Power Distribution Unit, PDU).

[0044] Among them, since the power distribution device 100 in this embodiment includes a fast charging module 10 and a functional module 20, it can be understood that the power distribution device 100 also includes at least the same beneficial effects as the fast charging module 10 and the functional module 20. Therefore, for the beneficial effects of the power distribution device 100, please refer to the beneficial effects of the fast charging module 10 and the functional module 20 below.

[0045] In the related art, if the power distribution device only includes functional modules, the power distribution device does not have a fast charging function (i.e., "fast charging"). In this case, if you want to add a fast charging function to the power distribution device, you need to change the relevant configuration of the power distribution device (such as the wiring harness and related electrical components in the power distribution device, etc.), or even replace the entire power distribution device, which will lead to a greater degree of complexity in the changes and excessively high cost of the changes. In the present application, the fast charging module 10 can be an optional module, that is, when the battery pack 1000 needs to have a fast charging function, the user can electrically connect the fast charging module 10 and the functional module 20 to enable the battery pack 1000 to have a fast charging function; when the battery pack 1000 does not need to have a fast charging function, the user can release the electrical connection between the fast charging module 10 and the functional module 20, so that the battery pack 1000 does not have a fast charging function (at this time, the battery pack 1000 can only perform conventional charging, that is, "slow charging"). Therefore, compared with the prior art, the present embodiment does not require a major change or replacement of the power distribution device 100 to enable the power distribution device 100 to have a fast charging function, thereby not only improving the applicability of the power distribution device 100, but also reducing the production cost of the power distribution device 100.

[0046] In some embodiments, the fast charging module 10 can be set at any position around the functional module 20, so that the relative positions of the fast charging module 10 and the functional module 20 can be adaptively adjusted according to the internal space of the battery pack 1000, so as to prevent the power distribution device 100 from interfering with other structures in the battery pack 1000 (such as the battery pack 200), thereby ensuring the normal assembly of the power distribution device 100. It should be noted that in some embodiments, the fast charging module 10 can be electrically connected to the functional module 20 using electrical connectors such as wiring harnesses or copper busbars. Therefore, when the setting position of the fast charging module 10 changes, it is only necessary to adaptively adjust the electrical connectors between the fast charging module 10 and the functional module 20, so as to improve the stability and reliability of the electrical connection between the fast charging module 10 and the functional module 20.

[0047] See also Figure 3 In some embodiments, the fast charging module 10 includes a shell 11, a fast charging fuse 12, a first relay 13, a second relay 14 and a circuit board 15. The fast charging fuse 12, the first relay 13 and the second relay 14 are arranged side by side and are all installed on the shell 11, and are all used to connect to the functional module 20 of the power distribution device 100. The fast charging fuse 12 is electrically connected to the first relay 13, and the first relay 13 and the second relay 14 are both electrically connected to the circuit board 15.

[0048] Among them, the housing 11 is a component for installing the fast charge fuse 12, the first relay 13 and the second relay 14. The housing 11 can be made of one or more insulating materials such as plastic, rubber, glass or ceramic. Therefore, the setting of the housing 11 can provide installation space for the fast charge fuse 12, the first relay 13 and the second relay 14 on the one hand; on the other hand, it can prevent the operator from directly contacting the fast charge fuse 12, the first relay 13 and the second relay 14, thereby improving the safety performance of the fast charge module 10.

[0049] In some embodiments, the fast charge fuse 12, the first relay 13 and the second relay 14 can be arranged on the housing 11 in a detachable connection manner, so that they can be easily removed for repair or replacement when the fast charge fuse 12, the first relay 13 or the second relay 14 is damaged. Among them, the detachable connection method includes but is not limited to a snap connection or a threaded connection. In other embodiments, the fast charge fuse 12, the first relay 13 and the second relay 14 can be arranged on the housing 11 in a non-detachable connection manner, thereby improving the structural stability of the fast charge module 10 and preventing the fast charge module 10 from being damaged during the electrical equipment 2000 ( Figure 1 As shown in the figure, the fast charge fuse 12, the first relay 13 or the second relay 14 shakes and falls off during operation, thereby improving the working stability of the battery pack 1000. Among them, the non-detachable connection method includes but is not limited to bonding or welding.

[0050] Please combine Figure 2 In some embodiments, the battery pack 1000 ( Figure 1 The battery pack 1000 is a battery pack 100 that is electrically connected to the battery pack 1000 and electrically connected to the battery pack 1000. The battery pack 1000 is an electrical component that is electrically connected to the battery pack 1000 and electrically connected to the battery pack 1000. The battery pack 1000 is an electrical component that is electrically connected to the battery pack 1000 and electrically connected to the battery pack 1000. The battery pack 1000 is an electrical component that is electrically connected to the battery pack 1000 and electrically connected to the battery pack 1000 by the heat generated by the heat generated by the fuse 12.

[0051] A relay is an electrical component that turns the controlled circuit on or off when the input quantity (such as voltage and current) reaches a specified value. In the present application, the relay may include a first relay 13 and a second relay 14, both of which are relays with normally open contacts, and the first relay 13 and the second relay 14 can jointly control the fast charging current (such as low voltage and large current or high voltage and small current, etc.) to enter the battery pack 200 to achieve the fast charging function. Among them, the first relay 13 can be electrically connected to the fast charging fuse 12, and jointly connected to the position of the charging and discharging circuit 300 close to the positive electrode of the battery pack 200, and the second relay 14 can be connected to the position of the charging and discharging circuit 300 close to the negative electrode of the battery pack 200, thereby, the first relay 13, the second relay 14 and the fast charging fuse 12 can enable the battery pack 200 to have a fast charging function. For example, when both the charge-discharge circuit 300 and the fast charge circuit 700 are turned on, the fast charge current can enter the positive electrode of the battery pack 200 through the first relay 13 and the fast charge fuse 12, and flow out of the negative electrode of the battery pack 200 through the second relay 14. It should be noted that in some embodiments, the first relay 13 and the second relay 14 may be a DC relay or an AC relay. The embodiment of the present application is only described by taking the first relay 13 and the second relay 14 as DC relays as an example.

[0052] In some embodiments, the first relay 13 can be electrically connected to the fast-charge fuse 12 using electrical connectors such as a wiring harness or a copper busbar. For example, when the first relay 13 is electrically connected to the fast-charge fuse 12 using a copper busbar, the copper busbar can be connected and fixed to the terminal of the first relay 13 using fasteners (such as bolts, etc.). For another example, when the first relay 13 is electrically connected to the fast-charge fuse 12 using a copper busbar, the copper busbar can be electrically connected to the first relay 13 by welding. Therefore, compared with the use of fasteners for connection and fixation, the use of welding can reduce or even avoid the possibility of interference between the fast-charge module 10 and other structures, thereby ensuring the normal assembly of the fast-charge module 10.

[0053] See also Figure 3 The printed circuit board 15 (PCB) is an electrical component used to realize functions such as data acquisition, data processing, communication and control. In some embodiments, the first relay 13 and the second relay 14 are both provided with a first plug 16, and the first plug 16 is used to be electrically connected to the printed circuit board 15, so that the printed circuit board 15 can control the operation of the first relay 13 and the second relay 14, and obtain the operation information of the first relay 13 and the second relay 14 (such as the operation voltage or the operation current, etc.).

[0054] Specifically, in some embodiments, the first plug 16 can be electrically connected to the conductive terminal (not shown) on the circuit board 15 by welding, plugging or abutting, so as to realize the electrical connection between the first relay 13 and the second relay 14 and the circuit board 15. It should be noted that in some embodiments, the first plug 16 and the conductive terminal can be made of conductive materials, and the conductive materials include but are not limited to metals, graphite, conductive polymers, oxides or carbon nanotubes. Among them, metals include but are not limited to copper, aluminum, silver, gold and nickel; oxides include but are not limited to copper oxide, zinc oxide and magnesium oxide. Therefore, when the first plug 16 is in contact with the conductive terminal, the first plug 16 and the conductive terminal can be electrically connected.

[0055] In some embodiments, the circuit board 15 may include a single-layer board, a double-layer board, and a multi-layer board. It is understandable that since the circuit board 15 of the fast charging module 10 is only electrically connected to the first relay 13 and the second relay 14, the circuit board 15 of the fast charging module can be a single-layer board, thereby simplifying the manufacturing process of the circuit board 15 and reducing the production cost of the fast charging module 10.

[0056] In addition, since the first relay 13 and the second relay 14 are arranged side by side, that is, the first relay 13 and the second relay 14 are arranged together and close to each other, wherein the fast charging fuse 12 can be arranged on the side of the first relay 13 away from the second relay 14, thereby, compared with the first relay 13 and the second relay 14 being arranged at intervals, for example, the fast charging fuse 12 is arranged between the first relay 13 and the second relay 14, the size of the circuit board 15 is smaller, thereby on the one hand, it can further reduce the production cost of the circuit board 15, that is, reduce the production cost of the fast charging module 10; on the other hand, it can be conducive to realizing the miniaturization of the fast charging module 10, thereby improving the space utilization inside the battery pack 1000.

[0057] In the fast charging module 10 of the embodiment of the present application, the fast charging fuse 12, the first relay 13 and the second relay 14 are all arranged in the shell 11, and the first relay 13 and the second relay 14 are arranged side by side, and the fast charging fuse 12 is electrically connected to the first relay 13. Therefore, compared with the traditional relay and fuse 233 as independent components, the fast charging fuse 12, the first relay 13 and the second relay 14 can be installed as a whole in the battery pack 1000, thereby reducing the space occupied by the fast charging fuse 12, the first relay 13 and the second relay 14, improving the utilization rate of the internal space of the battery pack 1000, and thus realizing the miniaturization of the battery pack 1000.

[0058] See also Figures 2 to 4In some embodiments, the functional module 20 may include an installation shell 21, a conduction module 23, a pre-charge module 25 and a battery management system 27. The installation shell 21 is provided with a housing chamber 211. The conduction module 23 is accommodated in the housing chamber 211, and includes a main positive relay 231, a fuse 233, a main negative relay 235 and a current acquisition unit 237, and the main positive relay 231, the fuse 233, the main negative relay 235 and the current acquisition unit 237 are all electrically connected. The pre-charge module 25 is accommodated in the housing chamber 211, and includes a pre-charge relay 251 and a pre-charge resistor 253, and the pre-charge relay 251 is electrically connected to the pre-charge resistor 253. The battery management system 27 is accommodated in the housing chamber 211, and the circuit board 15, the conduction module 23 and the pre-charge module 25 are all electrically connected to the battery management system 27, and the battery management system 27 is used to control the operation of the fast charging module 10, the conduction module 23 and the pre-charge module 25.

[0059] Among them, the mounting shell 21 is a component used to separate the conduction module 23, the pre-charging module 25 and the battery management system 27 from the external environment. Therefore, the setting of the mounting shell 21 can prevent the operator from directly contacting the conduction module 23, the pre-charging module 25 and the battery management system 27, thereby improving the safety performance of the functional module 20. It should be noted that in some embodiments, the mounting shell 21 can be made of one or more materials such as plastic, rubber, glass or ceramic. For example, if the mounting shell 21 is made of ceramic material, the mounting shell 21 can improve the safety performance of the functional module 20 while also enabling the mounting shell 21 to have the effect of fireproof and high temperature resistance.

[0060] Specifically, in some embodiments, the mounting shell 21 includes a first side wall 213 and a second side wall 215 facing each other, and a peripheral wall 217 located between the first side wall 213 and the second side wall 215, and the first side wall 213, the second side wall 215 and the peripheral wall 217 are combined to form a receiving cavity 211. Among them, the conduction module 23, the pre-charging module 25 and the battery management system 27 are all accommodated in the receiving cavity 211, so that the mounting shell 21, the conduction module 23, the pre-charging module 25 and the battery management system 27 can form an integrated module, so that on the one hand, the space size occupied by the conduction module 23, the pre-charging module 25 and the battery management system 27 can be reduced, and the utilization rate of the internal space of the battery pack 1000 can be improved, thereby realizing the miniaturization of the battery pack 1000; on the other hand, the number of cables of the power distribution device 100 can be simplified, thereby simplifying the cable structure of the charge and discharge circuit 300 and reducing the failure rate. It should be noted that the accommodating cavity 211 may include a variety of different shapes and sizes, for example, the accommodating cavity 211 may be a rectangular parallelepiped, a cylindrical shape, a hexagonal prism shape, etc. It is understandable that in some embodiments, the shape of the accommodating cavity 211 may be determined according to the shapes and sizes of the conduction module 23, the pre-charging module 25, and the battery management system 27.

[0061] In certain embodiments, the main positive relay 231, the fuse 233, the main negative relay 235 and the current acquisition unit 237 are all electrically connected and can jointly form a main circuit of the charge and discharge circuit 300; the pre-charge relay 251 is electrically connected to the pre-charge resistor 253 and can jointly form a pre-charge circuit of the charge and discharge circuit 300, and the pre-charge circuit is electrically connected to the main circuit and is also electrically connected to the battery pack 200, thereby, the main circuit and the pre-charge circuit can be used together to realize the charge and discharge function of the battery pack 200.

[0062] The main positive relay 231 is a relay with a normally open contact. The main positive relay 231 can connect or disconnect the battery pack 200 in the main circuit. For example, when the coil of the main positive relay 231 is activated, the contacts are closed to turn on the main circuit. When the input reaches a specified value, the contacts are opened to disconnect the main circuit of the battery pack 200. Therefore, the setting of the main positive relay 231 can protect the main circuit, thereby improving the working stability of the battery pack 1000.

[0063] In the present application, the main positive relay 231 and the fuse 233 can be electrically connected and connected together in the main circuit near the positive pole of the battery pack 200 to protect the main circuit, thereby improving the working stability of the battery pack 1000.

[0064] The main negative relay 235 is a relay with a normally closed contact. The main negative relay 235 can disconnect or connect the battery pack 200 in the main circuit. For example, when the coil of the main negative relay 235 is activated, the contact opens to cut off the output of the battery pack 200. Therefore, the setting of the main negative relay 235 can protect the main circuit, thereby improving the working stability of the battery pack 1000.

[0065] The current acquisition unit 237 is an electrical component with a current detection function. In the present application, the current acquisition unit 237 can collect the current of the main circuit, thereby ensuring the current stability of the main circuit, which is beneficial to the stable operation of the battery pack 1000 and improves the safety of the battery pack 1000. It should be noted that in some embodiments, the current acquisition unit 237 includes but is not limited to a shunt, a Hall sensor, or other current sensors.

[0066] In some embodiments, the main positive relay 231 and the fuse 233 can together form an integrated module structure, the main negative relay 235 and the current acquisition unit 237 can together form an integrated module structure, and the two integrated module structures together with the pre-charging module 25 and the battery management system 27 form a functional module 20. Therefore, compared with the main positive relay 231, the fuse 233, the main negative relay 235 and the current acquisition unit 237 being independent components, the integrated main positive relay 231 and the fuse 233, and the integrated main negative relay 235 and the current acquisition unit 237 occupy a smaller space size, thereby being able to improve the working stability of the battery pack 1000 while also improving the utilization rate of the internal space of the battery pack 1000, thereby realizing the miniaturization of the battery pack 1000.

[0067] Please combine Figure 2 The pre-charge relay 251 is an electrical component that can start and disconnect the pre-charge circuit to protect the electrical components and the charge-discharge circuit 300 from voltage shock. In the present application, the pre-charge relay 251 can be electrically connected to the main positive relay 231 and the fuse 233 in parallel. Therefore, the setting of the pre-charge relay 251 can prevent the electrical components and the charge-discharge circuit 300 in the battery pack 1000 from being damaged, and improve the working stability of the battery pack 1000.

[0068] The pre-charging resistor 253 is an electrical component that can limit the output current of the battery pack 200. In the present application, the pre-charging resistor 253 is connected in series with the pre-charging relay 251, and the pre-charging resistor 253 and the pre-charging relay 251 are electrically connected in parallel with the main positive relay 231 and the fuse 233. Therefore, the setting of the pre-charging resistor 253 can prevent the electrical components and the charging and discharging circuit 300 in the battery pack 1000 from being damaged, thereby further improving the working stability of the battery pack 1000.

[0069] In some embodiments, the pre-charging relay 251 and the pre-charging resistor 253 can together form an integrated module structure (i.e., the pre-charging module 25), and together with the conduction module 23 and the battery management system 27 form a functional module 20. Therefore, compared with the pre-charging relay 251 and the pre-charging resistor 253 being independent components, the integrated pre-charging relay 251 and the pre-charging resistor 253 occupy a smaller space size, thereby being able to improve the working stability of the battery pack 1000 while also improving the utilization rate of the internal space of the battery pack 1000, thereby realizing the miniaturization of the battery pack 1000.

[0070] It can be understood that in other embodiments, the main positive relay 231, the fuse 233, the pre-charge relay 251 and the pre-charge resistor 253 can together form an integrated module structure, and together with the main negative relay 235, the current acquisition unit 237 and the battery management system 27 form a functional module 20, thereby also being able to improve the utilization rate of the internal space of the battery pack 1000 and realize the miniaturization of the battery pack 1000.

[0071] The battery management system 27 (BMS) can be electrically connected to the circuit board 15, the conduction module 23 and the pre-charge module 25 by means of copper busbars, wiring harnesses or electrical connectors, so that the BMS27 can monitor and control the working status of the fast charging module 10, the conduction module 23 and the pre-charge module 25, thereby controlling the operation of the battery pack 1000. In the present application, the BMS27 is disposed in the accommodating cavity 211. Therefore, compared with the BMS27 being disposed outside the accommodating cavity 211, the BMS27 is integrated in the power distribution device 100, which can improve the utilization rate of the internal space of the power distribution device 100, realize the miniaturization of the power distribution device 100, and thus realize the miniaturization of the battery pack 1000.

[0072] Specifically, in some embodiments, the BMS 27 may include a high voltage sampling unit (High Voltage Supervising Unit, HVSU) and a battery monitoring and control system (Battery Monitoring and Control, BMC). In other words, the HVSU and the BMC are integrated into the BMS 27. In other embodiments, the HVSU can be independently provided, that is, the HVSU is provided outside the BMS 27 and is electrically connected to the charge and discharge circuit 300 and the BMS 27. In the embodiments of the present application, only the HVSU integrated into the BMS 27 is used as an example for description.

[0073] Among them, HVSU is an electrical component with functions such as current sampling, voltage or sintering detection and leakage detection, that is, HVSU can collect information such as temperature, current and voltage of the charging and discharging circuit 300 of the battery pack 200; BMC is a system that monitors the current, voltage and temperature of the battery pack 200 in real time, and provides functions such as data acquisition, data processing, communication and control. In this application, BMC is responsible for real-time monitoring and control of the battery pack 200, and can promptly detect and handle abnormal conditions of the battery. HVSU is responsible for monitoring the high-voltage part of the battery pack 200 to prevent overvoltage, undervoltage and other conditions. Therefore, HVSU and BMC are integrated in BMS27 to improve the reliability and safety of the battery pack 1000 and extend the service life of the battery pack 1000. In addition, compared with the independent settings of HVSU and BMC, the BMS27 of this embodiment does not need to set up additional interfaces and connecting lines. On the one hand, it can reduce the complexity of the BMS27 line, reduce the failure risk of BMS27, and ensure the normal operation of the battery pack 1000; on the other hand, when BMS27 is integrated into the distribution device 100, the size of the distribution device 100 is smaller, thereby enabling the miniaturization of the battery pack 1000.

[0074] In some embodiments, the BMS 27 is disposed on the first side wall 213 of the mounting shell 21, the shell 11 includes a first side wall 111 and a second side wall 113 opposite to each other, the circuit board 15 is disposed on the first side wall 111 of the shell 11, and the first side wall 213 of the mounting shell 21 and the first side wall 111 of the shell 11 have the same orientation.

[0075] Specifically, in some embodiments, when the fast charging module 10 and the functional module 20 are electrically connected, the fast charging module 10 can be arranged side by side with the functional module 20, and the first side wall 213 of the mounting shell 21 and the first side wall 111 of the shell 11 are oriented in the same direction. At this time, the circuit board 15 and the BMS27 are located on the same side of the power distribution device 100. Therefore, compared with the circuit board 15 and the BMS27 being located on different sides of the power distribution device 100, on the one hand, it can facilitate the electrical connection between the circuit board 15 and the BMS27, thereby improving the assembly efficiency of the power distribution device 100; on the other hand, it can shorten the length of the electrical connector (such as a wiring harness, etc.) between the circuit board 15 and the BMS27, thereby not only reducing costs, but also reducing the possibility of interference between the circuit board 15 and the BMS27 and other electrical components, thereby ensuring the normal assembly of the power distribution device 100.

[0076] See also Figure 2 and Figure 4In some embodiments, at least one of the main positive relay 231, the fuse 233, the main negative relay 235, the current acquisition unit 237, the pre-charge relay 251 and the pre-charge resistor 253 is provided with a second plug 29, and the second plug 29 is used to be electrically connected to the battery management system 27, so that the BMS 27 can control the operation of at least one of the main positive relay 231, the fuse 233, the main negative relay 235, the current acquisition unit 237, the pre-charge relay 251 and the pre-charge resistor 253, and obtain the working information (such as working voltage or working current, etc.) of at least one of the main positive relay 231, the fuse 233, the main negative relay 235, the current acquisition unit 237, the pre-charge relay 251 and the pre-charge resistor 253.

[0077] Specifically, in some embodiments, the second plug-in 29 can be electrically connected to the conductive terminal (not shown) on the BMS27 by welding, plugging or abutting, so as to realize the electrical connection between the main positive relay 231, the fuse 233, the main negative relay 235, the current acquisition unit 237, the pre-charge relay 251 and the pre-charge resistor 253 and the BMS27. It should be noted that in some embodiments, the second plug-in 29 and the conductive terminal can be made of conductive materials, and the conductive materials are not limited to metals, graphite, conductive polymers, oxides or carbon nanotubes. Among them, metals include but are not limited to copper, aluminum, silver, gold and nickel; oxides include but are not limited to copper oxide, zinc oxide and magnesium oxide, so that when the second plug-in 29 is in contact with the conductive terminal, the second plug-in 29 and the conductive terminal can be electrically connected.

[0078] Please combine Figure 2 In some embodiments, the functional module 20 may further include a heating module 28, which is accommodated in the accommodating cavity 211 and includes a heating relay 281 and a heating fuse 283, the heating relay 281 is electrically connected to the heating fuse 283, the heating module 28 is electrically connected to the BMS 27, and the BMS 27 is used to control the operation of the heating module 28. In some embodiments, a second plug 29 may also be provided on the heating relay 281, and the second plug 29 is electrically connected to the conductive terminal electrically connected to the BMS 27, so that the BMS 27 can control the operation of the heating module 28.

[0079] Furthermore, in some embodiments, the battery pack 1000 may also include a heating element 600, which can be electrically connected to the heating module 28, so that the BMS 27 can control the normal operation of the heating element 600 through the heating module 28, so that the battery pack 200 is always at a suitable operating temperature, preventing the temperature from being too low to affect the working performance of the battery pack 200 or even causing damage to the battery pack 200, thereby improving the stability and safety of the battery pack 200 and extending the service life of the battery pack 200. It should be noted that in some embodiments, the heating element 600 can be a heating element such as a heating film.

[0080] In some embodiments, the heating relay 281 and the heating fuse 283 can together form an integrated module structure. Thus, compared with the heating relay 281 and the heating fuse 283 being independent components, the integrated heating relay 281 and the heating fuse 283 occupy a smaller space size, thereby being able to improve the working stability of the battery pack 1000 while also improving the utilization rate of the internal space of the battery pack 1000, thereby achieving miniaturization of the battery pack 1000.

[0081] See also Figure 1 and Figure 2 In some embodiments, the battery pack 1000 may further include a first connector 400 and a second connector 500. It should be noted that in some embodiments, the first connector 400 and the second connector 500 may be circular connectors or rectangular connectors.

[0082] Specifically, in some embodiments, when the first connector 400 is electrically connected to the charge-discharge circuit 300, the battery pack 1000 can have a slow charge function; when the second connector 500 is electrically connected to the charge-discharge circuit 300, the battery pack 1000 can have a fast charge function. In addition, the battery pack 1000 can also be electrically connected to the motor 2200 through the first connector, so that the battery pack 1000 (battery pack 200) can provide electric energy to the motor 2200, so that the motor 2200 converts the electric energy into mechanical energy to drive the electric device 2000 to operate, so as to achieve stable control of the electric device 2000.

[0083] In some embodiments, first connector 400 and second connector 500 are arranged side by side, that is, first connector 400 and second connector 500 can be arranged on the same side of battery pack 1000. Compared with the case where first connector 400 and second connector 500 are arranged on different sides of battery pack 1000, first connector 400 and second connector 500 in this embodiment can not only be easily connected to an external device, thereby facilitating user operation, but also reduce the possibility of interference between first connector 400 and second connector 500 and other electrical components when connected to an external device, thereby ensuring the stability and reliability of battery pack 1000.

[0084] See also Figure 3 and Figure 4 In some embodiments, the electrical connection positions of the functional module 20 may all face the peripheral wall 217 of the mounting shell 21, for example, the terminal of the main positive relay 231 faces the peripheral wall 217 of the mounting shell 21, and, as can be seen from the above, the BMS 27 is disposed on the first side wall 213 of the mounting shell 21. Therefore, if the first connector 400 is disposed on the first side wall 213 of the mounting shell 21, the first connector 400 needs a longer first copper bar 30 to be electrically connected to the functional module 20 to avoid interference between the first copper bar 30 and the BMS 27, which will result in a higher production cost of the power distribution device 100. In some embodiments, the first connector 400 may be spaced opposite to the second side wall 215 of the mounting shell 21, or spaced opposite to the peripheral wall 217 of the mounting shell 21, thereby shortening the length of the first copper bar 30, thereby reducing the production cost of the power distribution device 100 on the one hand; on the other hand, reducing the space occupied by the first copper bar 30, which is conducive to miniaturization of the power distribution device 100 and the battery pack 1000. It can be understood that when the first connector 400 is spaced apart from the second side wall 215 of the mounting shell 21, the second connector 500 is also spaced apart from the second side wall 215 of the mounting shell 21; or when the first connector 400 is spaced apart from the peripheral wall 217 of the mounting shell 21, the second connector 500 is also spaced apart from the peripheral wall 217 of the mounting shell 21.

[0085] For further information, see Figure 3 In some embodiments, the power distribution device 100 may further include a first copper bar 30, a second copper bar 40, and a third copper bar 50, wherein the first copper bar 30 is electrically connected to the second copper bar 40 through the third copper bar 50. The first connector 400 is electrically connected to the functional module 20 through the first copper bar 30. The second connector 500 is electrically connected to the fast charging module 10 through the second copper bar 40.

[0086] Specifically, in some embodiments, the first connector 400 can be directly electrically connected to the charge and discharge circuit 300 through the first copper bar 30, thereby enabling the battery pack 1000 to achieve a slow charge function. The second connector 500 can be electrically connected to the fast charge module 10 through the second copper bar 40, and when the third copper bar 50 is electrically connected to the first copper bar 30 and the second copper bar 40, the second connector 500 can be connected to the charge and discharge circuit 300, thereby enabling the battery pack 1000 to achieve a fast charge function.

[0087] It can be understood that in the present application, the shapes and installation positions of the first copper bar 30, the second copper bar 40 and the third copper bar 50 can be adaptively adjusted according to the relative positions of the functional module 20 and the fast charging module 10, thereby preventing the power distribution device 100 from interfering with other structures of the battery pack 1000 when installed inside the battery pack 1000, thereby improving the applicability of the power distribution device 100 and ensuring the normal assembly of the power distribution device 100.

[0088] If the fast charging module 10 and the functional module 20 are electrically connected, and the spacing between the fast charging module 10 and the functional module 20 is far, the length of the third copper bar 50 will be longer, thereby increasing the production cost of the power distribution device 100 on the one hand; on the other hand, the longer third copper bar 50 will occupy a larger space size, which is not conducive to the miniaturization of the power distribution device 100 and the battery pack 1000. In the present application, the fast charging module 10 and the functional module 20 are arranged side by side, that is, the fast charging module 10 and the functional module 20 are arranged together and close to each other. Therefore, compared with the fast charging module 10 and the functional module 20 being arranged at intervals, the spacing between the fast charging module 10 and the functional module 20 is smaller, so that the length of the third copper bar 50 can be shortened, thereby reducing the production cost of the power distribution device 100 on the one hand; on the other hand, it can reduce the space size occupied by the third copper bar 50, which is conducive to the miniaturization of the power distribution device 100 and the battery pack 1000.

[0089] In addition, when the fast charging module 10 is electrically connected to the functional module 20, the electrical connection positions on the fast charging module 10 are mainly concentrated on the first relay 13 and the second relay 14, that is, the number of the third copper busbars 50 electrically connected to the first relay 13 and the second relay 14 is relatively large. Therefore, if the fast charging module 10 and the functional module 20 are arranged side by side, the second relay 14 is far away from the functional module 20, which will cause the length of the third copper busbar 50 to be longer, thereby increasing the production cost of the power distribution device 100 on the one hand; on the other hand, the longer third copper busbar 50 will occupy a larger space size, which is not conducive to the miniaturization of the power distribution device 100 and the battery pack 1000. In the present application, the fast charging module 10 and the functional module 20 are arranged side by side, and the second relay 14 of the fast charging module 10 is closer to the functional module 20 than the fast charging fuse 12 of the fast charging module 10. Therefore, compared with the second relay 14 being far away from the functional module 20, the length of the third copper busbar 50 in the present application is shorter, which can further reduce the production cost of the distribution device 100 on the one hand; on the other hand, it can further reduce the space size occupied by the third copper busbar 50, which is conducive to the miniaturization of the distribution device 100 and the battery pack 1000.

[0090] In summary, please refer to Figures 2 to 4 In some embodiments, during operation of the battery pack 1000, the current flow may be as follows:

[0091] The battery pack 1000 is in the pre-power-on process: when BMS27 receives the pre-power-on information, BMS27 controls the low-voltage power supply to transmit electric energy to the pre-charge relay 251 of the pre-charge module 25, so that the pre-charge relay 251 starts to work. Specifically, first, the current generated by the battery pack 200 can flow out to the load (such as the motor 2200, etc.) after passing through the fuse 233 of the conduction module 23, the pre-charge relay 251 of the pre-charge module 25, the pre-charge resistor 253 of the pre-charge module 25 and the first connector 400, and then the current can flow back to the battery pack 200 through the main negative relay 235 of the conduction module 23 and the current acquisition unit 237 of the conduction module 23, wherein when the current flows through the main negative relay 235 and the current acquisition unit 237, the current acquisition unit 237 can collect current information;

[0092] The battery pack 1000 is in the pre-power-on and power-off process: when the BMS 27 receives the pre-power-on completion information, the BMS 27 controls the low-voltage power supply to transmit electric energy to the main positive relay 231 of the conduction module 23, so that the main positive relay 231 starts to work, and controls the low-voltage power supply to stop supplying power to the pre-charge relay 251, so that the pre-charge relay 251 stops working;

[0093] The battery pack 1000 is in the discharge process: the current generated by the battery pack 200 flows out to the load through the fuse 233, the main positive relay 231 and the first connector 400, and then the current can flow back to the battery pack 200 through the main negative relay 235 and the current acquisition unit 237, wherein the current acquisition unit 237 can collect current information when the current flows through the main negative relay 235 and the current acquisition unit 237;

[0094] The battery pack 1000 is in the charging process (slow charging): the current can flow into the charging and discharging circuit 300 through the first connector 400, and flow into the battery pack 200 through the main positive relay 231 and the fuse 233, and then the current can flow out through the main negative relay 235 and the current acquisition unit 237, wherein the current acquisition unit 237 can collect current information when the current flows through the main negative relay 235 and the current acquisition unit 237;

[0095] The battery pack 1000 is in the charging process (fast charging): the current can flow into the charging and discharging circuit 300 through the second connector 500, and flow into the battery pack 200 after passing through the first relay 13, the fast charging fuse 12, the main positive relay 231 and the fuse 233, and then the current can flow out through the main negative relay 235, the current acquisition unit 237 and the second relay 14, wherein when the current flows through the main negative relay 235 and the current acquisition unit 237, the current acquisition unit 237 can collect current information.

[0096] It should be noted that the current flow of the battery pack 1000 during operation in the above-mentioned embodiment is only an example description, and the current flow of the battery pack 1000 during operation may also be other different embodiments, which will not be explained one by one here.

[0097] The technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification. At the same time, other implementation methods can be derived from the above-mentioned embodiments, so that structural and logical replacements and changes can be made without departing from the scope of this disclosure.

[0098] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A fast charging module, applied to a power distribution device, characterized in that: It includes a shell, a fast-charging fuse, a first relay, a second relay and a circuit board. The fast-charging fuse, the first relay and the second relay are arranged side by side and are all installed on the shell, and are all used to connect with the functional module of the power distribution device. The fast-charging fuse is electrically connected to the first relay, and the first relay and the second relay are both electrically connected to the circuit board.

2. The fast charging module according to claim 1, characterized in that: The first relay and the second relay are both provided with a first plug-in piece, and the first plug-in piece is used for being electrically connected to the circuit board.

3. The fast charging module according to claim 1, characterized in that: The circuit board is a single-layer board.

4. A power distribution device for a battery pack, characterized in that: include: The fast charging module according to any one of claims 1 to 3; and A functional module is arranged outside the shell and is electrically connected to the fast charging module. The functional module and the fast charging module are used together to control the operation of the battery pack.

5. The power distribution device according to claim 4, characterized in that: The functional modules include: A mounting shell, wherein the mounting shell is provided with a containing cavity; A conduction module, which is accommodated in the accommodating cavity and includes a main positive relay, a fuse, a main negative relay and a current collection unit, wherein the main positive relay, the fuse, the main negative relay and the current collection unit are all electrically connected; A pre-charging module, which is received in the accommodating cavity and comprises a pre-charging relay and a pre-charging resistor, wherein the pre-charging relay is electrically connected to the pre-charging resistor; and A battery management system, the battery management system is accommodated in the accommodating cavity, the circuit board, the conduction module and the pre-charging module are all electrically connected to the battery management system, and the battery management system is used to control the operation of the fast charging module, the conduction module and the pre-charging module.

6. The power distribution device according to claim 5, characterized in that: The mounting shell includes a first side wall and a second side wall opposite to each other, the battery management system is arranged on the first side wall of the mounting shell, the shell includes a first side wall and a second side wall opposite to each other, the circuit board is arranged on the first side wall of the shell, and the first side wall of the mounting shell and the first side wall of the shell have the same orientation.

7. The power distribution device according to claim 5, characterized in that: At least one of the main positive relay, the fuse, the main negative relay, the current acquisition unit, the pre-charge relay and the pre-charge resistor is provided with a second plug-in, and the second plug-in is used to be electrically connected to the battery management system.

8. The power distribution device according to claim 5, characterized in that: The functional module also includes: A heating module is housed in the accommodating cavity and includes a heating relay and a heating fuse. The heating relay is electrically connected to the heating fuse. The heating module is electrically connected to the battery management system. The battery management system is used to control the operation of the heating module.

9. A battery pack, characterized in that: include: Battery pack; and The power distribution device according to any one of claims 4 to 8, wherein the power distribution device is electrically connected to the battery pack, and the power distribution device is used to control the charging and discharging of the battery pack.

10. The battery pack according to claim 9, characterized in that: The power distribution device further includes a first copper bar, a second copper bar and a third copper bar, wherein the first copper bar is electrically connected to the second copper bar through the third copper bar; and the battery pack further includes: a first connector, the first connector being electrically connected to the functional module through the first copper bus; and A second connector, wherein the second connector is electrically connected to the fast charging module through the second copper bus.

11. The battery pack according to claim 10, characterized in that: The fast charging module and the functional module are arranged side by side, and the second relay of the fast charging module is closer to the functional module than the fast charging fuse of the fast charging module.

12. The battery pack according to claim 10, characterized in that: The installation shell of the functional module comprises a first side wall and a second side wall opposite to each other, and a peripheral wall located between the first side wall and the second side wall, and the battery management system of the functional module is arranged on the first side wall; The first connector and the second connector are arranged side by side and are spaced apart from and opposite to the second side wall of the mounting shell; or The first connector and the second connector are arranged side by side and are spaced apart from each other and opposite to the peripheral wall of the mounting shell.

13. An electrical equipment, characterized in that: include: A battery pack as claimed in any one of claims 9 to 12.

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