High-voltage system and electric vehicle

Abstract

A high-voltage system and an electric vehicle. The high-voltage system is applied to an electric vehicle, and the high-voltage system comprises a battery management subsystem, a charging subsystem, and an insertion assembly. The battery management subsystem comprises a battery pack assembly and a first power distribution member. The battery pack assembly is electrically connected to the first power distribution member. The charging subsystem comprises a charging and distribution assembly and a second power distribution member. The charging and distribution assembly and the battery pack assembly are stacked in a first direction, and the second power distribution member is electrically connected to the charging and distribution assembly. The insertion assembly comprises a first insertion member and a second insertion member. The first insertion member is electrically connected to the first power distribution member, the second insertion member is electrically connected to the second power distribution member, and the first insertion member is electrically connected to the second insertion member. The electrical connection between the charging and distribution assembly and the battery pack assembly is directly implemented by means of the first insertion member and the second insertion member, which reduces high-voltage wire harness connections between the charging and distribution assembly and the battery pack assembly and reduces the risk of high voltage due to excessive high-voltage wire harness connections.

Description

High-voltage systems and electric vehicles

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on September 27, 2023, with application number 202322644333.5 and application name “High Voltage System and Electric Vehicle”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the technical field of high-voltage systems for electric vehicles, and in particular to a high-voltage system and an electric vehicle. Background Art

[0003] With the development of new energy vehicles, controllers are becoming increasingly complex and larger in size, placing increasingly stringent demands on cabin layout, requiring more controllers to be placed within a limited space to achieve the required functionality and performance. This is particularly true for the layout of the high-voltage system in pure electric vehicles. Because high-voltage power is used, high-voltage wiring harnesses are often thicker and more numerous, making connections more complex. This can easily lead to high-voltage risks due to the excessive number of connection points.

[0004] Summary of the Invention

[0005] The present application provides a high-voltage system and an electric vehicle, which are at least used to solve the problem that a large number of high-voltage wiring harnesses in the high-voltage system of a pure electric vehicle leads to multiple high-voltage wiring harness connection locations, resulting in high-voltage risks.

[0006] In a first aspect, the present application provides a high-voltage system, which is applied to electric vehicles. The high-voltage system includes a battery management subsystem, a charging subsystem and a plug-in assembly. The battery management subsystem includes a battery pack assembly and a first distribution component, and the battery pack assembly is electrically connected to the first distribution component; the charging subsystem includes a charging and distribution assembly and a second distribution component, and the charging and distribution assembly and the battery pack assembly are stacked in a first direction, and the second distribution component is electrically connected to the charging and distribution assembly; the plug-in assembly includes a first connector and a second connector, and the first connector is electrically connected to the first distribution component, and the second connector is electrically connected to the second distribution component, and the first connector is electrically connected to the second connector.

[0007] In one possible embodiment, the first connector is formed with a first extension section, the second connector is formed with multiple second extension sections, a first slot is formed between two adjacent second extension sections, the first extension section corresponds to the first slot, the first extension section extends into the first slot and abuts against the two second extension sections forming the first slot to achieve electrical connection between the first connector and the second connector.

[0008] In a possible embodiment, the high-voltage system also includes a drive subsystem, which includes a first dual electric drive assembly, a second dual electric drive assembly, a first motor controller wiring harness sub-assembly and a second motor controller wiring harness sub-assembly. The battery pack assembly and the charging and distribution assembly are located between the first dual electric drive assembly and the second dual electric drive assembly in a second direction, and the second direction is perpendicular to the first direction. The first dual electric drive assembly is electrically connected to the battery pack assembly through the first motor controller wiring harness sub-assembly, and the second dual electric drive assembly is electrically connected to the charging and distribution assembly through the second motor controller wiring harness sub-assembly.

[0009] In one possible embodiment, the high-voltage system also includes a high-voltage accessory subsystem, which includes an air-conditioning compressor assembly and a heat exchange controller assembly. The heat exchange controller assembly is used to control the warm air PTC and the compressor. The air-conditioning compressor assembly and the heat exchange controller assembly are both installed at one end of the first dual electric drive assembly in the first direction.

[0010] In a possible embodiment, the charging subsystem further includes a main gun charging port and a secondary gun charging port, the main gun charging port and the secondary gun charging port are arranged at intervals, the charging and distribution assembly is located at one end of the battery pack assembly in the second direction, the second direction is perpendicular to the first direction, the main gun charging port and the secondary gun charging port are both installed on the side of the battery pack assembly close to the charging and distribution assembly in the second direction, and the main gun charging port and the secondary gun charging port are both electrically connected to the charging and distribution assembly.

[0011] In a possible embodiment, the main gun charging port includes an AC charging port and a DC charging port, and the charging subsystem also includes a main gun AC charging cable and a main gun DC charging cable. The AC charging port is electrically connected to the charging and distribution assembly through the main gun AC charging cable, and the DC charging port is electrically connected to the charging and distribution assembly through the main gun DC charging cable. The AC charging port is used to slow charge the battery pack assembly, and the DC charging port is used to fast charge the battery pack assembly.

[0012] In one possible embodiment, the high-voltage system includes a second dual electric drive assembly, which is arranged on the side of the battery pack assembly where the charging and distribution assembly is installed, and the main gun charging port and the auxiliary gun charging port are respectively located on opposite sides of the charging and distribution assembly in a third direction, and the third direction, the first direction and the second direction are perpendicular to each other.

[0013] In a second aspect, the present application provides an electric vehicle, comprising a vehicle body and a high-voltage system as described in the first aspect, the vehicle body comprising a vehicle body front floor assembly and a plurality of cross beams, the vehicle body front floor assembly forming a receiving space, a plurality of the cross beams being installed at intervals on the vehicle body front floor assembly; the battery pack assembly is located in the receiving space, a first end of the battery pack assembly is connected to the plurality of the cross beams, the first end being an end of the battery pack assembly in the first direction, the opposite ends of the battery pack assembly in the third direction being connected to the vehicle body front floor assembly, the first direction and the third direction being perpendicular to each other.

[0014] In a possible embodiment, the battery pack assembly also includes a second end portion, the second end portion and the first end portion are two opposite ends of the battery pack assembly in the first direction, the second end portion is provided with a plurality of first fixing members, the plurality of first fixing members are provided on the outer periphery of the battery pack assembly, the vehicle body front floor assembly is provided with a plurality of second fixing members, the plurality of second fixing members correspond one-to-one to the plurality of first fixing members, and the first fixing members are fixedly connected to the second fixing members.

[0015] In a possible embodiment, a plurality of third fixing members are provided at the first end portion, at least one fourth fixing member is provided on each of the crossbeams, at least one fourth fixing member on each of the crossbeams corresponds to at least one third fixing member, and at least one fourth fixing member is fixedly connected to at least one third fixing member.

[0016] In the high-voltage system and electric vehicle of this application, the battery pack assembly and the charging and distribution assembly are directly connected via a first connector and a second connector. This eliminates the need for high-voltage wiring harness connections between the charging and distribution assembly and the battery pack assembly, reduces the risk of high voltage caused by excessive high-voltage wiring harness connections, and effectively reduces the cost and lightweight design of the high-voltage system. Furthermore, the charging and distribution assembly and the battery pack assembly are stacked in a first direction, making the high-voltage system more compact in the first direction, highly integrated, and with high space utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments.

[0018] FIG1 is a schematic diagram of the three-dimensional structure of a high-voltage system provided in an embodiment of the present application;

[0019] FIG2 is a top view of the high-voltage system shown in FIG1 ;

[0020] FIG3 is a schematic cross-sectional view of the high-voltage system shown in FIG2 along line III-III;

[0021] FIG4 is an enlarged schematic diagram of a point IV in the high-voltage system shown in FIG3 ;

[0022] FIG5 is a schematic diagram of a partial three-dimensional structure of an electric vehicle provided in an embodiment of the present application;

[0023] FIG6 is a schematic cross-sectional view of the electric vehicle shown in FIG5 along line VI-VI;

[0024] FIG7 is a partial top view of the electric vehicle shown in FIG5;

[0025] FIG8 is a schematic cross-sectional view of the electric vehicle shown in FIG7 along line VIII-VIII;

[0026] FIG9 is a schematic cross-sectional view of the electric vehicle shown in FIG5 along line IX-IX;

[0027] FIG10 is a schematic cross-sectional view of the electric vehicle shown in FIG5 along line XX;

[0028] FIG11 is a schematic diagram of the cross-sectional structure of the electric vehicle shown in FIG5 along the line XI-XI.

[0029] Explanation of the accompanying drawings: First direction-A, second direction-B, third direction-C, battery management subsystem-10, battery pack assembly-11, first distribution component-110, first end-111, second end-112, first fixing component-113, third fixing component-114, charging subsystem-20, charging and distribution assembly-21, second distribution component-210, main gun charging port-22, AC charging port-221, DC charging port-222, main gun AC charging cable-223, main gun DC charging cable-224, auxiliary gun charging port-23, auxiliary gun DC charging cable-231, plug assembly-30, first connector-31, first extension section-311, second slot-312, second Connector 32, second extension 321, first slot 322, drive subsystem 40, first dual electric drive assembly 41a, second dual electric drive assembly 41b, drive component 411, transmission 412, electronic control unit 413, first motor controller wiring harness subassembly 42a, second motor controller wiring harness subassembly 42b, high-voltage accessory subsystem 50, air conditioning compressor assembly 51, heat exchange controller assembly 52, high-voltage system 100, vehicle body 200, vehicle body front floor assembly 201, storage space 202, crossbeam 203, second fixing component 204, fourth fixing component 205, seal 300, electric vehicle 1000. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0031] The following descriptions of the various embodiments are provided with reference to the accompanying drawings to illustrate specific embodiments in which the present application may be implemented. Directional terms herein, such as "upper," "lower," "front," "back," "left," "right," "inner," "outer," and "side," are used solely with reference to the directions in the accompanying drawings. Therefore, the use of directional terms is intended to better and more clearly illustrate and understand the present application, and is not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present application.

[0032] Furthermore, the serial numbers assigned to components herein, such as "first," "second," etc., are used solely to distinguish the objects being described and do not convey any sequential or technical meaning. References to "connection" and "coupling" herein, unless otherwise specified, include both direct and indirect connections (couplings).

[0033] Referring to Figures 1, 2 and 3, the present application provides a high-voltage system 100, which is applied to an electric vehicle 1000. The high-voltage system 100 includes a battery management subsystem 10, a charging subsystem 20 and a plug-in assembly 30. The battery management subsystem 10 includes a battery pack assembly 11 and a first distribution component 110. The battery pack assembly 11 is electrically connected to the first distribution component 110. The charging subsystem 20 includes a charging and distribution assembly 21 and a second distribution component 210. The charging and distribution assembly 21 and the battery pack assembly 11 are stacked in a first direction A. The second distribution component 210 is electrically connected to the charging and distribution assembly 21. The plug-in assembly 30 includes a first connector 31 and a second connector 32. The first connector 31 is electrically connected to the first distribution component 110. The second connector 32 is electrically connected to the second distribution component 210. The first connector 31 is electrically connected to the second connector 32.

[0034] In the high-voltage system 100 of the present application, the battery pack assembly 11 and the charging and distribution assembly 21 are directly connected via a first connector 31 and a second connector 32. This eliminates the need for high-voltage wiring harness connections between the charging and distribution assembly 21 and the battery pack assembly 11, reducing the risk of high voltage damage caused by excessive high-voltage wiring harness connections. This effectively reduces the cost of the high-voltage system 100 and achieves a lightweight design. Furthermore, the charging and distribution assembly 21 and the battery pack assembly 11 are stacked in a first direction A, making the high-voltage system 100 more compact in the first direction A, highly integrated, and with high space utilization.

[0035] Please refer to Figure 4, in which the first distribution component 110, the second distribution component 210, the first connector 31 and the second connector 32 are all metal devices. The first connector 31 and the second connector 32 are both connecting terminals. The first distribution component 110 is installed inside the battery pack assembly 11. The second distribution component 210 is installed inside the charging and distribution assembly 21. The first connector 31 extends into the battery pack assembly 11 and is plugged into the first distribution component 110 and abuts against the first distribution component 110 to achieve an electrical connection between the first connector 31 and the first distribution component 110, such as welding or bolting. Similarly, the second connector 32 extends into the charging and distribution assembly 21 and is plugged into the second distribution component 210 and abuts against the second distribution component 210 to achieve an electrical connection between the second connector 32 and the second distribution component 210. The first connector 31 and the second connector 32 can be connected by plugging and bolting, and the first connector 31 and the second connector 32 abut against each other to achieve electrical connection between the charging and distribution assembly 21 and the battery pack assembly 11.

[0036] It should be noted that the first direction A mentioned in this application may be the height direction of the electric vehicle 1000, the second direction B may be the length direction of the electric vehicle 1000, and the third direction C may be the width direction of the electric vehicle 1000. The first direction A, the second direction B, and the third direction C are perpendicular to each other.

[0037] The battery management subsystem 10 also includes a battery management system (BMS). The BMS is integrated into the battery pack assembly. The BMS is used to monitor the status of the battery pack assembly 11, prevent overcharging or overdischarging of the battery pack assembly 11, and extend the service life of the battery pack assembly 11.

[0038] Referring to Figure 4 , for example, the first connector 31 is formed with a first extension section 311. The second connector 32 is formed with multiple second extension sections 321. A first slot 322 is formed between two adjacent second extension sections 321. The first extension section 311 corresponds to the first slot 322. The first extension section 311 extends into the first slot 322 and abuts against the two second extension sections 321 forming the first slot 322, thereby achieving electrical connection between the first connector 31 and the second connector 32.

[0039] Wherein, a plurality of second extension sections 321 are arranged in an array.

[0040] The first connector 31 may include one or more first extension sections 311. For example, if there is only one first extension section 311, the second connector 32 may include two second extension sections 321. A first slot 322 is formed between the two second extension sections 321. The first extension section 311 is inserted into the first slot 322 and abuts the two second extension sections 321. The abutment between the first and second extension sections 311, 321 establishes an electrical connection between the first connector 31 and the second connector 32. Furthermore, the first extension section 311 positioned within the first slot 322 formed by the two second extension sections 321 can position the first extension section 311 and ensure a stable connection between the first and second extension sections 311, 321. For another example, the first extension section 311 may include two. The two first extension sections 311 form a second slot 312. The second connector 32 may include three second extension sections 321. A first slot 322 is formed between two adjacent second extension sections 321. The three second extensions 321 form two first slots 322. The two first extensions 311 of the first connector 31 are each inserted into one of the first slots 322. Part of the second extensions 321 of the second connector 32 extends into the second slots 312. For example, the middle second extension 321 of the second connector 32 is inserted into the second slot 312. The second extension 321 within the second slot 312 can abut against both first extensions 311 forming the second slot 312, thereby enhancing the stability of the connection between the first connector 31 and the second connector 32.

[0041] Furthermore, after the first connector 31 and the second connector 32 are plugged in and connected, the first connector 31 and the second connector 32 can be further fixed by bolts to strengthen the connection stability between the first connector 31 and the second connector 32 .

[0042] Referring to Figures 1 and 2, for example, the high-voltage system 100 also includes a drive subsystem 40. The drive subsystem 40 includes a first dual electric drive assembly 41a, a second dual electric drive assembly 41b, a first motor controller wiring harness subassembly 42a, and a second motor controller wiring harness subassembly 42b. The battery pack assembly 11 and the charging and distribution assembly 21 are located between the first dual electric drive assembly 41a and the second dual electric drive assembly 41b in the second direction B. The second direction B is perpendicular to the first direction A. The first dual electric drive assembly 41a is electrically connected to the battery pack assembly 11 through the first motor controller wiring harness subassembly 42a. The second dual electric drive assembly 41b is electrically connected to the charging and distribution assembly 21 through the second motor controller wiring harness subassembly 42b.

[0043] Positioning the battery pack assembly 11 and the charging and distribution assembly 21 between the first dual electric drive assembly 41a and the second dual electric drive assembly 41b effectively increases the integration and space utilization of the high-voltage system 100. Furthermore, the first motor controller wiring harness subassembly 42a is directly electrically connected to the battery pack assembly 11, eliminating the need to pass through the battery pack assembly 11 to connect to the charging and distribution assembly 21, thus reducing the need for high-voltage wiring harness routing.

[0044] The first dual electric drive assembly 41a and the second dual electric drive assembly 41b both include a drive member 411 (such as a motor), a transmission 412, an electric control unit 413 and a junction box. Among them, the drive member 411 and the transmission 412 may include one or more. For the first dual electric drive assembly 41a, the first motor controller wiring harness subassembly 42a is connected to the electric control unit 413, the junction box connects the drive member 411 and the electric control unit 413, and the drive member 411 is connected to the transmission 412 through a transmission member (such as a gear). Similarly, for the second dual electric drive assembly 41b, the second motor controller wiring harness subassembly 42b is connected to the electric control unit 413, the junction box connects the drive member 411 and the electric control unit 413, and the drive member 411 is connected to the transmission 412 through a transmission member.

[0045] The battery pack assembly 11 directly distributes electric energy to the electronic control unit 413 in the first dual electric drive assembly 41a through the first motor controller harness sub-assembly 42a, and then supplies power to the driving component 411 through the junction box in the first dual electric drive assembly 41a, so that the driving component 411 in the first dual electric drive assembly 41a generates power, and transmits the power to the transmission 412 in the first dual electric drive assembly 41a through the transmission component in the first dual electric drive assembly 41a, and finally transmits the power to the electric vehicle 1000 through the drive shaft, thereby realizing the forward and reverse movement of the electric vehicle 1000.

[0046] The battery pack assembly 11 distributes electric energy to the electric control unit 413 in the second dual electric drive assembly 41b through the charging and distribution assembly 21 via the second motor controller harness sub-assembly 42b, and then supplies power to the driving component 411 through the junction box in the second dual electric drive assembly 41b, so that the driving component 411 in the second dual electric drive assembly 41b generates power, and transmits the power to the transmission 412 through the transmission component in the second dual electric drive assembly 41b, and finally transmits the power to the electric vehicle 1000 through the drive shaft, thereby realizing the forward and reverse movement of the electric vehicle 1000.

[0047] The first dual electric drive assembly 41a and the battery pack assembly 11 only require the first motor controller wiring harness sub-assembly 42a. High-voltage power transmission between the second dual electric drive assembly 41b and the charging and distribution assembly 21 only requires the second motor controller wiring harness sub-assembly 42b. This reduces the number of high-voltage wiring harnesses and simplifies the connection method, further reducing the risk of high voltage caused by excessive high-voltage wiring harness connections and improving the safety of the electric vehicle 1000.

[0048] Referring to Figures 1 and 2 , the high-voltage system 100 also includes, by way of example, a high-voltage accessory subsystem 50. This subsystem includes an air conditioning compressor assembly 51 and a heat exchange controller assembly 52. ​​The heat exchange controller assembly 52 is used to control the heater's positive temperature coefficient (PTC) thermistor and the compressor. Both the air conditioning compressor assembly 51 and the heat exchange controller assembly 52 are mounted on one end of the first dual electric drive assembly 41a in the first direction A.

[0049] The heat exchange controller assembly 52 can be electrically connected to the heater core of the air conditioning box in the passenger compartment through the high-voltage load harness sub-assembly.

[0050] The heat exchange controller assembly 52 includes a heater PTC controller and a compressor controller. Integrating the heater PTC controller and the compressor controller together, and mounting both the air conditioning compressor assembly 51 and the heat exchange controller assembly 52 on one end of the first dual electric drive assembly 41a in the first direction A, improves the integration of the high-voltage system 100.

[0051] The high-voltage accessory subsystem 50 may further include a socket discharge line and a direct current (DC) output line, which may be used to electrically connect various components within the high-voltage accessory subsystem 50 .

[0052] Referring to Figure 2 , for example, the charging subsystem 20 further includes a main gun charging port 22 and a secondary gun charging port 23. The main gun charging port 22 and the secondary gun charging port 23 are spaced apart. The charging and distribution assembly 21 is located at one end of the battery pack assembly 11 in the second direction B. The second direction B is perpendicular to the first direction A. The main gun charging port 22 and the secondary gun charging port 23 are both installed on a side of the battery pack assembly 11 in the second direction B near the charging and distribution assembly 21. The main gun charging port 22 and the secondary gun charging port 23 are both electrically connected to the charging and distribution assembly 21.

[0053] The charging and distribution assembly 21 is stacked on one end of the battery pack assembly 11 in the second direction B. Both the main gun charging port 22 and the auxiliary gun charging port 23 are located on the side of the battery pack assembly 11 in the second direction B, proximate to the charging and distribution assembly 21. The spacing of the main gun charging port 22 and the auxiliary gun charging port 23 from the charging and distribution assembly 21 in the second direction B effectively shortens the length of the high-voltage wiring harness between the main gun charging port 22 and the charging and distribution assembly 21, and between the auxiliary gun charging port 23 and the charging and distribution assembly 21. This effectively reduces the difficulty of connecting the high-voltage wiring harness and mitigates the risk of high voltage damage caused by entanglement due to excessively long high-voltage wiring harnesses.

[0054] In addition, by setting the main gun charging port 22 and the auxiliary gun charging port 23 on one side of the battery pack assembly 11 in the second direction B, the main gun charging port 22 or the auxiliary gun charging port 23 can be used for charging alone, or the main gun charging port 22 and the auxiliary gun charging port 23 can be used for charging at the same time, and the charging method is flexible and convenient.

[0055] For example, the main gun charging port 22 includes an AC charging port 221 and a DC charging port 222. The charging subsystem 20 also includes an AC charging cable 223 and a DC charging cable 224 for the main gun. The AC charging port 221 is electrically connected to the charging and distribution assembly 21 via the AC charging cable 223. The DC charging port 222 is electrically connected to the charging and distribution assembly 21 via the DC charging cable 224. The AC charging port 221 is used for slow charging of the battery pack assembly 11. The DC charging port 222 is used for fast charging of the battery pack assembly 11.

[0056] The main gun charging port 22 is provided with an AC charging port 221 and a DC charging port 222. The number of charging ports and the charging speed can be flexibly selected according to the parking duration, making the charging method of the electric vehicle 1000 more flexible. When the battery level of the electric vehicle 1000 is low, multiple charging ports can be selected for charging simultaneously, improving the charging efficiency of the electric vehicle 1000.

[0057] The DC charging port 222 is connected to the power grid via a charging gun, and then to the battery pack assembly 11 via the main gun DC charging cable 224 and the fuses and contactors of the charging and distribution assembly 21, enabling fast charging of the battery pack assembly 11 from the main gun charging port 22. The AC charging port 221 is connected to the power grid via a charging gun, and then to the battery pack assembly 11 after DC boosting via the main gun AC charging cable 223 and the fuses and contactors of the charging and distribution assembly 21, enabling slow charging of the battery pack assembly 11 from the main gun charging port 22.

[0058] For example, a distribution box is provided in the auxiliary gun charging port 23, and the auxiliary gun charging port 23 is connected to the distribution box assembly through the auxiliary gun DC charging line 231. The auxiliary gun charging port 23 is connected to the power grid through the charging gun, and is connected to the battery pack assembly 11 through the auxiliary gun DC charging line 231 and the on-off of the fuse and contactor in the charging and distribution assembly 21, thereby realizing fast charging of the auxiliary gun.

[0059] For example, the second dual electric drive assembly 41b is located on the side of the battery pack assembly 11 where the charging and distribution assembly 21 is installed. The main gun charging port 22 and the auxiliary gun charging port 23 are located on opposite sides of the charging and distribution assembly 21 in the third direction C. The third direction C, the first direction A, and the second direction B are mutually perpendicular.

[0060] The main gun charging port 22 and the auxiliary gun charging port 23 are respectively set on the opposite sides of the second dual electric drive assembly 41b in the third direction C, and the main gun charging port 22 and the auxiliary gun charging port 23 are set on the same side of the battery pack assembly 11 in the second direction B, which has better ergonomics and convenient charging operation.

[0061] Among them, the main gun charging port 22 and the second dual electric drive assembly 41b are spaced apart in the third direction C, and the auxiliary gun charging port 23 and the second dual electric drive assembly 41b are spaced apart in the third direction C to prevent the main gun charging port 22 and the auxiliary gun charging port 23 from having too high a temperature during the charging process, which affects the use of the second dual electric drive assembly 41b.

[0062] Referring to Figures 1, 5 and 6, the present application also provides an electric vehicle 1000, which includes a vehicle body 200 and a high-voltage system 100 provided in any embodiment of the present application. The vehicle body 200 includes a vehicle body front floor assembly 201 and a plurality of cross beams 203. The vehicle body front floor assembly 201 forms a receiving space 202. A plurality of cross beams 203 are installed at intervals on the vehicle body front floor assembly 201. The battery pack assembly 11 is located in the receiving space 202. The first end 111 of the battery pack assembly 11 is connected to the plurality of cross beams 203. The first end 111 is an end of the battery pack assembly 11 in the first direction A. The opposite ends of the battery pack assembly 11 in the third direction C are connected to the vehicle body front floor assembly 201. The first direction A and the third direction C are perpendicular to each other.

[0063] The electric vehicle 1000 may be a new energy four-wheel drive pure electric sedan, SUV, MPV or off-road vehicle, or a pure electric vehicle for other special areas, or a hybrid vehicle.

[0064] As can be understood, the front floor assembly 201 is composed of two longitudinal beams extending in the second direction B. Multiple cross beams 203 are spaced between the two longitudinal beams in the second direction B. Placing the battery pack assembly 11 within the receiving space 202 formed by the front floor assembly 201 makes the electric vehicle 1000 more compact in the first direction A, improving space utilization.

[0065] The first end portion 111 is the end portion of the battery pack assembly 11 close to the seat in the vehicle body 200 .

[0066] In the present application, a plurality of crossbeams 203 are provided on the side of the electric vehicle 1000 facing away from the battery pack assembly 11 in the third direction C. The portion of the battery pack assembly 11 that is not in contact with the crossbeam 203 is in direct contact with the carpet. This realizes the integrated design of the battery pack assembly 11 and the vehicle body 200. At the same time, the height of the battery pack assembly 11 in the third direction C is made more sufficient, so that the energy density of the battery pack assembly 11 is higher, the overall cruising range is met, and the electric vehicle 1000 is compactly arranged in the third direction C. In addition, the charging and distribution assembly 21 is arranged at the first end 111 of the battery pack assembly 11 below the rear seats, which makes the electric vehicle 1000 more integrated and has better space utilization.

[0067] For example, the electric vehicle 1000 further includes a seal 300 . The seal 300 is provided at the connection between the battery pack assembly 11 and the vehicle body front floor assembly 201 , and is used to seal the connection between the battery pack assembly 11 and the vehicle body front floor assembly 201 .

[0068] Referring to Figures 7 and 8, for example, the battery pack assembly 11 further includes a second end 112. The second end 112 and the first end 111 are two opposite ends of the battery pack assembly 11 in the first direction A. The second end 112 is provided with a plurality of first fixing members 113. The plurality of first fixing members 113 are provided on the outer periphery of the battery pack assembly 11. The vehicle body front floor assembly 201 is provided with a plurality of second fixing members 204. The plurality of second fixing members 204 correspond one-to-one with the plurality of first fixing members 113, and the first fixing members 113 and the second fixing members 204 are fixedly connected.

[0069] Multiple first fixing members 113 are located outside the receiving space 202. By disposing multiple first fixing members 113 at the second end 112 of the battery pack assembly 11, and providing multiple second fixing members 204 on the vehicle body front floor assembly 201 that correspond one-to-one with the multiple first fixing members 113, the first fixing members 113 and the second fixing members 204 are then fastened via bolts to secure the second end 112 of the battery pack assembly 11 to the vehicle body front floor assembly 201. Furthermore, multiple first fixing members 113 are disposed along the outer periphery of the battery pack assembly 11, securing the battery pack assembly 11 to the vehicle body front floor assembly 201 at multiple locations along the circumference, thereby enhancing the reliability of the connection between the battery pack assembly 11 and the vehicle body front floor assembly 201.

[0070] 1 and 5 , for example, a plurality of third fixing members 114 are provided on the first end 111. At least one fourth fixing member 205 is provided on each crossbeam 203. The at least one fourth fixing member 205 on each crossbeam 203 corresponds to at least one third fixing member 114, and the at least one fourth fixing member 205 is fixedly connected to the at least one third fixing member 114.

[0071] Referring to Figures 9, 10, and 11, multiple third fixing members 114 may be spaced apart at the first end portion 111 in the second direction B. For example, multiple rows of third fixing members 114 may be spaced apart in the second direction B. Each row includes multiple third fixing members 114, and each row of third fixing members 114 corresponds to a crossbeam 203. Each crossbeam 203 is provided with fourth fixing members 205 corresponding one-to-one with each third fixing member 114. This strengthens the connection between the battery pack assembly 11 and the crossbeam 203 and prevents the battery pack assembly 11 from falling.

[0072] The third fixing member 114 and the fourth fixing member 205 can be connected and fixed by bolts. Alternatively, the third fixing member 114 and the fourth fixing member 205 can be connected and fixed by welding, which is not limited in this application.

[0073] Please refer to Figure 2. In this application, when assembling the high-voltage system 100, the first dual electric drive assembly 41a, the air-conditioning compressor assembly 51 and the first motor controller wiring harness sub-assembly 42a can be sub-assembled first, the battery pack assembly 11 and the charging and distribution assembly 21 can be sub-assembled, and the second dual electric drive assembly 41b and the second motor controller wiring harness sub-assembly 42b can be sub-assembled to achieve modular assembly, thereby shortening the production cycle and improving production efficiency.

[0074] The above are some implementation methods of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications are also considered to be within the scope of protection of the present application.

Claims

1. A high pressure system (100), characterized in that: The high voltage system (100) is applied to an electric vehicle (1000), comprising: A battery management subsystem (10), comprising a battery pack assembly (11) and a first power distribution component (110), wherein the battery pack assembly (11) is electrically connected to the first power distribution component (110); A charging subsystem (20), comprising a charging and distribution assembly (21) and a second distribution component (210), wherein the charging and distribution assembly (21) and the battery pack assembly (11) are stacked in a first direction, and the second distribution component (210) is electrically connected to the charging and distribution assembly (21); The plug-in assembly (30) comprises a first plug-in connector (31) and a second plug-in connector (32), wherein the first plug-in connector (31) is electrically connected to the first power distribution component (110), the second plug-in connector (32) is electrically connected to the second power distribution component (210), and the first plug-in connector (31) is electrically connected to the second plug-in connector (32).

2. The high voltage system (100) according to claim 1, characterized in that: The first connector (31) is formed with a first extension section (311), and the second connector (32) is formed with a plurality of second extension sections (321). A first slot (322) is formed between two adjacent second extension sections (321). The first extension section (311) corresponds to the first slot (322). The first extension section (311) extends into the first slot (322) and abuts against the two second extension sections (321) forming the first slot (322), so as to realize electrical connection between the first connector (31) and the second connector (32).

3. The high voltage system (100) according to claim 1 or 2, characterized in that: The high-voltage system (100) further comprises a drive subsystem (40), wherein the drive subsystem (40) comprises a first dual electric drive assembly (41a), a second dual electric drive assembly (41b), a first motor controller wiring harness subassembly (42a) and a second motor controller wiring harness subassembly (42b); the battery pack assembly (11) and the charging and distribution assembly (21) are located between the first dual electric drive assembly (41a) and the second dual electric drive assembly (41b) in a second direction, the second direction is perpendicular to the first direction, the first dual electric drive assembly (41a) is electrically connected to the battery pack assembly (11) via the first motor controller wiring harness subassembly (42a), and the second dual electric drive assembly (41b) is electrically connected to the charging and distribution assembly (21) via the second motor controller wiring harness subassembly (42b).

4. The high voltage system (100) according to claim 3, characterized in that: The high-voltage system (100) further includes a high-voltage accessory subsystem (50), wherein the high-voltage accessory subsystem (50) includes an air-conditioning compressor assembly (51) and a heat exchange controller assembly (52), wherein the heat exchange controller assembly (52) is used to control a warm air PTC and a compressor, and the air-conditioning compressor assembly (51) and the heat exchange controller assembly (52) are both installed at one end of the first dual electric drive assembly (41a) in the first direction.

5. The high voltage system (100) according to any one of claims 1 to 4, characterized in that: The charging subsystem (20) further comprises a main gun charging port (22) and a sub-gun charging port (23); the charging and distribution power assembly (21) is located at one end of the battery pack assembly (11) in a second direction, the second direction is perpendicular to the first direction, the main gun charging port (22) and the sub-gun charging port (23) are both installed on a side of the battery pack assembly (11) close to the charging and distribution power assembly (21) in the second direction, and the main gun charging port (22) and the sub-gun charging port (23) are both electrically connected to the charging and distribution power assembly (21).

6. The high voltage system (100) according to claim 5, characterized in that: The main gun charging port (22) comprises an alternating current charging port (221) and a direct current charging port (222); the charging subsystem (20) further comprises a main gun alternating current charging line (223) and a main gun direct current charging line (224); the alternating current charging port (221) is electrically connected to the charging and distribution assembly (21) via the main gun alternating current charging line (223); the direct current charging port (222) is electrically connected to the charging and distribution assembly (21) via the main gun direct current charging line (224); the alternating current charging port (221) is used to perform slow charging on the battery pack assembly (11); and the direct current charging port (222) is used to perform fast charging on the battery pack assembly (11).

7. The high voltage system (100) according to claim 5 or 6, characterized in that: The high-voltage system (100) comprises a second dual electric drive assembly (41b), the second dual electric drive assembly (41b) being arranged on a side of the battery pack assembly (11) on which the charging and distribution assembly (21) is installed, the main gun charging port (22) and the auxiliary gun charging port (23) being respectively located on opposite sides of the charging and distribution assembly (21) in a third direction, and the third direction, the first direction and the second direction are perpendicular to each other.

8. The high voltage system (100) according to any one of claims 5 to 7, characterized in that: The main gun charging port (22) and the auxiliary gun charging port (23) are both arranged spaced apart from the charging and distribution assembly (21) in the second direction.

9. The high voltage system (100) according to claim 7 or 8, characterized in that: The main gun charging port (22) and the second dual electric drive assembly (41b) are arranged at intervals in the third direction, and the auxiliary gun charging port (23) and the second dual electric drive assembly (41b) are arranged at intervals in the third direction.

10. An electric vehicle (1000), characterized in that: include: A vehicle body (200) comprises a vehicle body front floor assembly (201) and a plurality of cross beams (203), wherein the vehicle body front floor assembly (201) is formed with a receiving space (202), and the plurality of cross beams (203) are installed at intervals on the vehicle body front floor assembly (201); According to the high-voltage system (100) as described in any one of claims 1 to 9, the battery pack assembly (11) is located in the accommodating space (202), the first end (111) of the battery pack assembly (11) is connected to the plurality of cross beams (203), the first end (111) is an end of the battery pack assembly (11) in the first direction, the opposite ends of the battery pack assembly (11) in the third direction are connected to the vehicle body front floor assembly (201), and the first direction and the third direction are perpendicular to each other.

11. The electric vehicle (1000) according to claim 10, characterized in that: The battery pack assembly (11) further comprises a second end portion (112), the second end portion (112) and the first end portion (111) being two ends of the battery pack assembly (11) opposite to each other in the first direction, the second end portion (112) being provided with a plurality of first fixing members (113), the plurality of first fixing members (113) being provided on the outer periphery of the battery pack assembly (11), the vehicle body front floor assembly (201) being provided with a plurality of second fixing members (204), the plurality of second fixing members (204) corresponding to the plurality of first fixing members (113) one by one, and the first fixing members (113) being fixedly connected to the second fixing members (204).

12. The electric vehicle (1000) according to claim 10 or 11, characterized in that: The first end portion (111) is provided with a plurality of third fixing members (114), each of the cross beams (203) is provided with at least one fourth fixing member (205), at least one of the fourth fixing members (205) on each of the cross beams (203) corresponds to at least one of the third fixing members (114), and at least one of the fourth fixing members (205) is fixedly connected to at least one of the third fixing members (114).

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