Vehicle power supply assembly and vehicle

Abstract

The utility model provides a vehicle power supply assembly and a vehicle, the vehicle power supply assembly comprises a shell, a high-voltage power distribution unit, a DC / DC conversion unit and a low-voltage load unit which are arranged in the shell, the high-voltage power distribution unit comprises a PDU module, the low-voltage load unit comprises an E-fuse module, and the E-fuse module is connected with the DC / DC conversion unit. The PDU module and the E-fuse module are arranged on the same circuit board, and the circuit board and the DC / DC conversion unit are arranged in a spaced mode.

Description

Technical Field

[0001] The present application relates to the technical field of pure electric vehicle power supply, and in particular, to a vehicle power supply assembly and a vehicle. Background Art

[0002] IPU (Intelligent Power Unit) is a high-voltage intelligent power supply for new energy vehicles. It is widely configured in known electric vehicles and is an important protection module for the high-voltage circuit system of electric vehicles. In some known electric vehicles, there are two intelligent power units, which are divided into front intelligent power units and rear intelligent power units according to their layout positions.

[0003] At present, there are many design solutions for the front intelligent power supply on new energy vehicles. In a known front intelligent power supply unit, its low-voltage load unit is usually arranged separately from the main body of the power supply unit, that is, the E-fuse module in the front intelligent power supply unit is usually arranged separately from the PDU module and the DC / DC conversion unit therein, and circuit protection and cooling are performed separately.

[0004] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0005] One aspect of the present application is to solve a technical problem of how to reduce the volume and weight of a high-voltage intelligent power supply before a pure electric vehicle without reducing its working performance.

[0006] In addition, other aspects of the present application are also intended to solve or alleviate other technical problems existing in the prior art.

[0007] The present application provides a vehicle power supply assembly and a vehicle. Specifically, according to one aspect of the present application, the present application provides:

[0008] A vehicle power supply assembly includes a shell, which also includes a high-voltage distribution unit, a DC / DC conversion unit and a low-voltage load unit arranged in the shell, the high-voltage distribution unit includes a PDU module, the low-voltage load unit includes an E-fuse module, the PDU module and the E-fuse module are arranged on the same circuit board, and the circuit board is arranged spaced apart from the DC / DC conversion unit.

[0009] Optionally, according to an embodiment of the present application, a water cooling plate is provided in the shell, the circuit board and the board circuit of the DC / DC conversion unit are arranged in parallel, and the water cooling plate is arranged between the circuit board and the board circuit of the DC / DC conversion unit.

[0010] Optionally, according to an embodiment of the present application, the water cooling plate is integrally formed with the shell, and a cooling channel is constructed on the water cooling plate for cooling the DC / DC conversion unit and the E-fuse module.

[0011] Optionally, according to one embodiment of the present application, the circuit board is divided into a high-voltage area and a low-voltage area, the high-voltage area is arranged close to the vehicle's PTC heater and air-conditioning compressor, the PDU module is arranged in the high-voltage area, and the E-fuse module is arranged in the low-voltage area.

[0012] Optionally, according to an implementation manner of the present application, the fuse of the PDU module is welded on the E-fuse module.

[0013] Optionally, according to one embodiment of the present application, the cooling channel is configured in a U shape, including an inlet channel, an intermediate channel and an outlet channel connected in sequence, the inlet channel is attached to the MOS tube of the DC / DC conversion unit on a side close to the DC / DC conversion unit, and the outlet channel is attached to the transformer of the DC / DC conversion unit on a side close to the DC / DC conversion unit.

[0014] Optionally, according to one embodiment of the present application, a high-voltage connector group is also constructed on the high-voltage distribution unit, which includes an air compressor connector and a PTC heater connector, and a low-voltage connector group is also constructed on the low-voltage load unit, which includes a 12V low-voltage connector, a domain controller connector, a 12V battery connector and a 48V low-voltage connector.

[0015] Optionally, according to an embodiment of the present application, a mounting bracket protruding from the shell is provided on the outer wall of the shell, a mounting recess is provided on the mounting bracket, and reinforcing ribs are provided on the side of the mounting bracket.

[0016] According to another aspect of the present application, the present application provides a vehicle, wherein the vehicle includes the vehicle power supply assembly described above.

[0017] Benefits of this application include:

[0018] 1. The vehicle power supply assembly of the present application integrates the high-voltage power distribution unit, the DC / DC conversion unit and the low-voltage load unit into one housing, which improves the power supply assembly power density and reduces the volume and weight of the power supply assembly, thereby reducing the weight of the vehicle and increasing the vehicle space;

[0019] 2. The E-fuse module and the PDU (Power Distribution Unit) module are arranged on the same circuit board, and the PDU is set close to the vehicle's PTC heater and air conditioning compressor and other devices that require high-voltage power supply, saving layout space and wiring harness length;

[0020] 3. The E-fuse module and the DC / DC conversion unit are cooled by a water cooling plate arranged therebetween, and there is no need to set up a cooling structure for the E-fuse module separately, thereby achieving an efficient and convenient cooling process. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] With reference to the accompanying drawings, the above and other features of the present application will become apparent. It is easy for those skilled in the art to understand that these drawings are only for illustrative purposes and are not intended to limit the scope of protection of the present application. In addition, similar numbers in the drawings are used to represent similar components, among which,

[0022] Figure 1 A schematic diagram showing the structure of a vehicle power supply assembly proposed according to an embodiment of the present application is shown;

[0023] Figure 2 A schematic diagram showing the positions of the PDU module and the E-fuse module arranged on the same circuit board;

[0024] Figure 3 A schematic diagram showing the internal structure of a vehicle power supply assembly according to an embodiment of the present application with the upper cover and half of the circuit board removed;

[0025] Figure 4 A schematic structural diagram of a water cooling plate of a vehicle power supply assembly proposed according to an embodiment of the present application is shown. DETAILED DESCRIPTION

[0026] It is easy to understand that according to the technical solution of the present application, without changing the essential spirit of the present application, a person skilled in the art can propose a variety of interchangeable structural modes and implementation modes. Therefore, the following specific implementation modes and drawings are only exemplary descriptions of the technical solution of the present application, and should not be regarded as the entirety of the present application or as a limitation or restriction on the technical solution of the present application.

[0027] The directional terms such as up, down, left, right, front, back, front, back, top, bottom, etc. mentioned or may be mentioned in this specification are defined relative to the structures shown in the drawings. They are relative concepts and may change accordingly according to their different positions and different usage states. Therefore, these or other directional terms should not be interpreted as restrictive terms. In addition, the terms "first", "second", "third", etc. or similar expressions are only used for description and distinction purposes, and cannot be understood as indicating or implying the relative importance of the corresponding components or the order or assembly order of the components.

[0028] The intelligent power unit (IPU) is a key technology for new energy vehicles. It is an electric power control system that integrates multiple functions such as battery management, motor control and DC / DC conversion. It can monitor and manage the battery, control the speed and torque of the motor, and convert the DC power output by the battery into AC power suitable for other electrical equipment. Compared with traditional automobile engines, the advantages of IPU technology lie in energy saving, environmental protection and intelligent control. The application of IPU technology in pure electric vehicles can achieve optimal management of batteries, improve battery life and energy utilization, thereby reducing battery replacement and waste. At the same time, IPU technology also has the characteristics of intelligent control, which can be adjusted in real time according to the driver's needs and vehicle status, thereby improving the efficiency and performance of the entire system.

[0029] In the traditional front IPU design, the E-fuse module and other modules of the IPU are usually split and integrated in two separate housings. Cooling components need to be arranged separately to cool them, and the E-fuse module also needs to be protected separately. This front IPU takes up a large space, is costly, and has high requirements for thermal management of the entire vehicle.

[0030] refer to Figure 1 , which shows a schematic diagram of the structure of a vehicle power supply assembly proposed according to an embodiment of the present application. The vehicle power supply assembly 100 includes a housing 1 and a high-voltage distribution unit 2, a DC / DC conversion unit 3 and a low-voltage load unit 4 arranged in the housing 1, the high-voltage distribution unit 2 includes a PDU module 20, the low-voltage load unit 4 includes an E-fuse module 40, the PDU module 20 and the E-fuse module 40 are arranged on the same circuit board 5 (which is arranged inside the housing 1), and the circuit board 5 is arranged spaced apart from the DC / DC conversion unit 3.

[0031] from Figure 1 As can be seen in FIG. 1 , the three sub-units 2, 3, and 4 of the power supply assembly 100 are integrated into an integrated component through a housing 1. The circuit board 5 where the PDU module 20 and the E-fuse module 40 are located is Figure 1The circuit board 5 and the DC / DC conversion unit 3 are respectively fixed to the housing 1 by bolts. With this arrangement, the E-fuse module does not need to be arranged separately from other components of the power supply assembly, making the power supply assembly more compact, smaller in size and lighter in weight.

[0032] refer to Figure 2 , which shows a schematic diagram of the positions of the PDU module and the E-fuse module arranged on the same circuit board. Figure 2 As can be seen in the figure, the circuit board 5 is divided into a high-voltage area 51 and a low-voltage area 52. The high-voltage area 51 is arranged close to the vehicle's PTC (Positive Temperature Coefficient) heater 200 and the air-conditioning compressor (EAC) 300, and the PDU module 20 is arranged in the high-voltage area 51, so that the PDU module 20 is arranged closer to the PTC heater 200 and the air-conditioning compressor 300, thereby saving the length of the wiring harness and reducing the volume of the power supply assembly 100. The E-fuse module 40 occupies a large area of ​​the circuit board 5, and is arranged in the low-voltage area 52.

[0033] In one embodiment of the present application, the fuse of the PDU module 20 is connected to the E-fuse module 40 by welding.

[0034] refer to Figure 3 , which shows a schematic diagram of the internal structure of a vehicle power supply assembly according to an embodiment of the present application with the upper cover and half of the circuit board 5 removed. In order to conveniently show the position of the water cooling plate 6, Figure 3 The upper cover of the vehicle power supply assembly 100 and half of the circuit board 5 are removed. Figure 3 In the embodiment of the present invention, the housing 1 further includes a water-cooling plate 6, which is arranged in the middle of the housing 1 and between the circuit board 5 and the DC / DC conversion unit 3 which are arranged in parallel with each other. The upper side of the water-cooling plate 6 is in contact with the E-fuse module 40, and the lower side is in contact with the DC / DC conversion unit 3. The circuit board 5 and the board circuit of the DC / DC conversion unit 3 and the water-cooling plate 6 are arranged in parallel, thereby saving the longitudinal space of the power supply unit 100.

[0035] In one embodiment of the present application, the water-cooling plate 6 is integrally formed with the housing 1, and a cooling channel 60 is configured on the water-cooling plate 6 for cooling the DC / DC conversion unit 3 and the E-fuse module 40. It should be understood that the water-cooling plate 6 can also be manufactured separately from the housing 1 and fixed to the housing 1 by bolts. Those skilled in the art can also set other cooling structures on the water-cooling plate 6 according to the shapes of the DC / DC conversion unit 3 and the E-fuse module 40 to achieve the cooling function.

[0036] refer to Figure 4 , which shows a schematic structural diagram of a water cooling plate of a vehicle power supply assembly according to an embodiment of the present application. Figure 4 As can be seen in the figure, the water-cooled plate 6 has a cooling channel 60. The cooling channel 60 is configured in a U shape, including an inlet channel 61, an intermediate channel 62 and an outlet channel 63 connected in sequence. The liquid inlet and the liquid outlet of the cooling channel 60 are arranged on the same edge of the water-cooled plate 6. The inlet channel 61 is attached to the MOS (Metal-Oxide Semiconductor Field-Effect Transistor) tube of the DC / DC conversion unit 3 on the side close to the DC / DC conversion unit 3, and the outlet channel 63 is attached to the transformer of the DC / DC conversion unit 3 on the side close to the DC / DC conversion unit 3. Because the MOS tube and the transformer are the components with more serious heat generation in the DC / DC conversion unit 3, this arrangement of the cooling channel 60 can provide a better cooling effect for the MOS tube and the transformer of the DC / DC conversion unit 3.

[0037] In one embodiment of the present application, a high-voltage connector group is also constructed on the high-voltage power distribution unit 2, which includes an air compressor connector 21 for connecting an air compressor and a PTC heater connector for connecting a PTC heater, and a low-voltage connector group is also constructed on the low-voltage load unit 4, which includes a 12V low-voltage connector for connecting a 12V low-voltage load, a domain controller connector for connecting a domain controller (Zone), a 12V battery connector for connecting a 12V small battery, and a 48V low-voltage connector for connecting a 48V low-voltage load. After the current enters the high-voltage DC input 400 in the power supply assembly 100 from the battery, it supplies power to the high-voltage load through the PDU module 20 through the high-voltage connector, and then converts it into 12V / 48V through the DC / DC conversion unit 3, and then passes through the copper bus or wire through the shell and inputs it to the E-fuse module 40, and supplies power to the low-voltage load through the low-voltage connector through the E-fuse module 40. The power supply assembly of the present application is integrated with various types of connectors, which can supply power to various high-voltage and low-voltage loads at the same time to meet the power supply requirements of various loads of the whole vehicle.

[0038] Reference again Figure 1 In this embodiment, a mounting bracket 7 protruding from the housing 1 is provided on the outer wall of the housing 1, and a mounting recess 70 is provided on the mounting bracket 7 to facilitate the installation of the power supply assembly 100 inside the vehicle body. A reinforcing rib 71 is provided on the side of the mounting bracket 7 to improve the strength of the mounting bracket 7.

[0039] Another aspect of the present application further provides a vehicle, which includes the vehicle power supply assembly 100 described above.

[0040] It should be understood that the vehicle power assembly of the present application can be installed on various vehicles, including cars, trucks, buses, hybrid vehicles, pure electric vehicles, etc. Therefore, the subject matter of the present application is also intended to protect various vehicles equipped with the vehicle power assembly of the present application.

[0041] It should be understood that all the above preferred embodiments are illustrative rather than restrictive, and various modifications or variations made by those skilled in the art to the specific embodiments described above under the concept of the present application should be within the legal protection scope of the present application.

[0042] The relevant user personal information that may be involved in the various embodiments of this application is strictly in accordance with the requirements of laws and regulations, following the principles of legality, legitimacy and necessity, based on the reasonable purposes of business scenarios, to process the personal information that users actively provide during the use of products / services or generated due to the use of products / services, as well as the personal information obtained with the user's authorization.

[0043] The user personal information processed by the applicant will vary depending on the specific product / service scenario, and shall be based on the specific scenario in which the user uses the product / service, which may involve the user's account information, device information, driving information, vehicle information or other related information. The applicant will treat the user's personal information and its processing with a high degree of diligence.

[0044] The Applicant attaches great importance to the security of user personal information and has adopted reasonable and feasible security protection measures that comply with industry standards to protect user information and prevent personal information from being accessed, disclosed, used, modified, damaged or lost without authorization.

Claims

1. A vehicle power supply assembly (100), comprising a housing (1), characterized in that: The invention also comprises a high-voltage power distribution unit (2), a DC / DC conversion unit (3) and a low-voltage load unit (4) arranged in the housing (1); the high-voltage power distribution unit (2) comprises a PDU module (20); the low-voltage load unit (4) comprises an E-fuse module (40); the PDU module (20) and the E-fuse module (40) are arranged on the same circuit board (5); and the circuit board (5) is arranged to be spaced apart from the DC / DC conversion unit (3).

2. The vehicle power supply assembly (100) according to claim 1, characterized in that: A water cooling plate (6) is provided in the housing (1), the circuit board (5) and the board circuit of the DC / DC conversion unit (3) are arranged in parallel, and the water cooling plate (6) is arranged between the circuit board (5) and the board circuit of the DC / DC conversion unit (3).

3. The vehicle power supply assembly (100) according to claim 2, characterized in that: The water cooling plate (6) is integrally formed with the housing (1), and a cooling channel (60) is constructed on the water cooling plate (6) for cooling the DC / DC conversion unit (3) and the E-fuse module (40).

4. The vehicle power supply assembly (100) according to claim 1, characterized in that: The circuit board (5) is divided into a high-voltage area (51) and a low-voltage area (52); the high-voltage area (51) is arranged close to a PTC heater (200) and an air-conditioning compressor (300) of a vehicle; the PDU module (20) is arranged in the high-voltage area (51); and the E-fuse module (40) is arranged in the low-voltage area (52).

5. The vehicle power supply assembly (100) according to claim 4, characterized in that: The fuse of the PDU module (20) is welded on the E-fuse module (40).

6. The vehicle power supply assembly (100) according to claim 3, characterized in that: The cooling flow channel (60) is configured in a U shape, and comprises an inlet flow channel (61), an intermediate flow channel (62), and an outlet flow channel (63) connected in sequence, wherein the inlet flow channel (61) is abutted against the MOS tube of the DC / DC conversion unit (3) on a side close to the DC / DC conversion unit (3), and the outlet flow channel (63) is abutted against the transformer of the DC / DC conversion unit (3) on a side close to the DC / DC conversion unit (3).

7. The vehicle power supply assembly (100) according to claim 1, characterized in that: A high-voltage connector group is also constructed on the high-voltage power distribution unit (2), which includes an air compressor connector (21) and a PTC heater connector (22); and a low-voltage connector group is also constructed on the low-voltage load unit (4), which includes 12V low-voltage connectors (41, 42), a domain controller connector (43), a 12V battery connector (44) and a 48V low-voltage connector (45).

8. The vehicle power supply assembly (100) according to claim 1, characterized in that: A mounting bracket (7) protruding from the shell (1) is arranged on the outer wall of the shell (1), a mounting recess (70) is arranged on the mounting bracket (7), and a reinforcing rib (71) is arranged on the side of the mounting bracket (7).

9. A vehicle, characterized in that: The vehicle comprises a vehicle power supply assembly (100) according to any one of claims 1 to 8.

Images