An electric drive assembly, a battery system, and a vehicle

Abstract

The present disclosure provides an electric drive assembly, a battery system and a vehicle, wherein the electric drive assembly comprises: a housing; a cavity arranged in the housing; a filter unit arranged in the cavity, an input end of the filter unit being connected with a low-voltage input interface; a switch unit arranged in the cavity, an input end of the switch unit being connected with an output end of the filter unit; and an electric control unit arranged in the cavity, an input end of the electric control unit being connected with an output end of the switch unit, and an output end of the electric control unit being connected with a high-voltage output interface. In the electric drive assembly, the battery system and the vehicle, the voltage boosting module is effectively integrated in the electric drive assembly, thereby avoiding the space occupation problem caused by the separate arrangement of the voltage boosting module, reducing the use of lines, pipelines, fixing members and the like, effectively reducing the overall material cost, improving the overall installation efficiency, and effectively improving the overall safety.

Description

Technical Field

[0001] This disclosure relates to the field of battery technology, and more particularly to an electric drive assembly, battery system, and vehicle. Background Technology

[0002] With the rapid development of vehicle power batteries and the increasing demands of users for vehicle range, vehicle battery capacity has gradually increased, leading to the emergence of high-voltage battery packs. However, the current output voltage of charging piles is too low to charge high-voltage batteries. Typically, a boost module is configured on the battery to boost the voltage and achieve high-voltage charging.

[0003] However, current boost modules are all arranged separately from the electric drive assembly. The capacitors, inductors, switches and other components in the boost module are arranged in a centralized manner and then installed independently in the vehicle. At the same time, the boost module needs to transfer the high voltage to the battery through the electronic control unit of the electric drive assembly. Therefore, there are two high voltage harnesses between the boost module and the electric drive assembly.

[0004] Because the boost module is arranged independently, it occupies a certain amount of installation space, affecting the vehicle's layout design. In addition, the boost module requires a lot of wiring, pipes, and fasteners, resulting in higher overall material costs and lower installation efficiency. Furthermore, in the event of a collision or other accident, the boost module and the two high-voltage wiring harnesses between the boost module and the electric drive assembly are easily crushed and damaged, resulting in lower overall installability. Summary of the Invention

[0005] This disclosure aims to at least partially address one of the technical problems in the related art.

[0006] Therefore, the purpose of this disclosure is to provide an electric drive assembly, a battery system, and a vehicle.

[0007] To achieve the above objectives, the first aspect of this disclosure provides an electric drive assembly, comprising: a housing; a cavity disposed within the housing; a low-voltage input interface disposed on the housing; a high-voltage output interface disposed on the housing; a filter unit disposed within the cavity, the input terminal of the filter unit being connected to the low-voltage input interface; a switching unit disposed within the cavity, the input terminal of the switching unit being connected to the output terminal of the filter unit; and an electronic control unit disposed within the cavity, the input terminal of the electronic control unit being connected to the output terminal of the switching unit, and the output terminal of the electronic control unit being connected to the high-voltage output interface.

[0008] Optionally, the housing includes: a first part, on which a first groove is provided, the filtering unit and the switching unit are respectively disposed in the first groove, and the low-voltage input interface is disposed on the first part; a second part, on which a second groove is provided, the electronic control unit is disposed in the second groove, and the high-voltage output interface is disposed on the second part; wherein, the first part and the second part are connected, and the first groove and the second groove are disposed opposite to each other and together form the cavity.

[0009] Optionally, the first groove includes: a first receiving groove disposed on the first portion, the filtering unit disposed in the first receiving groove; and a second receiving groove disposed on the first portion, the second receiving groove being adjacent to and communicating with the first receiving groove, the switching unit being disposed in the second receiving groove.

[0010] Optionally, the housing further includes: a plurality of first pillars, which are sequentially arranged in the first receiving groove along the circumference of the first receiving groove, and the filtering unit is arranged on the plurality of first pillars; a plurality of second pillars, which are sequentially arranged in the second receiving groove along the circumference of the second receiving groove, and the switching unit is arranged on the plurality of second pillars; and a plurality of third pillars, which are respectively arranged in the second groove, and the electronic control unit is arranged on the plurality of third pillars.

[0011] Optionally, the electric drive assembly further includes: a motor, the motor being disposed at one end of the first part away from the second part, the motor including: a neutral point interface and a three-phase interface, the neutral point interface and the three-phase interface being respectively disposed in the first receiving slot, the output terminal of the switching unit being connected to the neutral point interface, and the input terminal of the electronic control unit being connected to the three-phase interface.

[0012] Optionally, the housing further includes: a plurality of ribs disposed in the first receiving groove, and the plurality of ribs dividing the first receiving groove into a plurality of isolation grooves, wherein the filter unit, the neutral point interface and the three-phase interface are sequentially disposed in the plurality of isolation grooves.

[0013] Optionally, the filtering unit includes: an adapter plate, the adapter plate being disposed at one end of the first receiving groove near the second receiving groove, the first end of the adapter plate being connected to the output end of the switching unit, and the second end of the adapter plate being connected to the neutral point interface.

[0014] Optionally, the input terminal of the switching unit is located at the end of the output terminal of the filtering unit that is away from the bottom of the first receiving slot, the output terminal of the switching unit is located at the first end of the adapter plate that is away from the bottom of the first receiving slot, and the second end of the adapter plate is located at the end of the neutral point interface that is away from the bottom of the first receiving slot.

[0015] Optionally, the electric drive assembly further includes: a speed reducer, the speed reducer being disposed at the end of the first part away from the second part, the motor being disposed at the end of the speed reducer away from the first part, and the output shaft of the motor being connected to the input shaft of the speed reducer, the output shaft of the speed reducer being located on one side of the housing; wherein, a clearance notch is provided on the side of the housing near the output shaft of the speed reducer, the first receiving groove is disposed on the side of the first part away from the clearance notch, the second receiving groove is disposed on the side of the first part near the clearance notch, the low-voltage input interface is disposed on the side of the first part away from the clearance notch, and the high-voltage output interface is disposed on the side of the second part near the clearance notch.

[0016] Optionally, the electric drive assembly further includes: a coolant input interface and a coolant output interface, the coolant input interface and the coolant output interface being respectively disposed on the housing; the switching unit includes: a first heat absorption path, the input end of the first heat absorption path being connected to the coolant input interface; the electronic control unit includes: a second heat absorption path, the input end of the second heat absorption path being connected to the output end of the first heat absorption path, and the output end of the second heat absorption path being connected to the coolant output interface.

[0017] A second aspect of this disclosure provides a battery system, comprising: a battery, the battery including: a low-voltage output interface and a high-voltage input interface; and an electric drive assembly as provided in the first aspect of this disclosure, wherein the low-voltage input interface of the electric drive assembly is connected to the low-voltage output interface, and the high-voltage output interface of the electric drive assembly is connected to the high-voltage input interface.

[0018] A third aspect of this disclosure provides a vehicle including a battery system as provided in the second aspect of this disclosure.

[0019] The technical solution provided in this disclosure may include the following beneficial effects:

[0020] Because the filter unit, switch unit, and electronic control unit are all housed within the cavity of the housing, and the low-voltage input interface and high-voltage output interface are both located on the housing, the boost module is effectively integrated into the electric drive assembly. This not only significantly reduces the overall size of the boost module and the electric drive assembly, avoiding the space occupation problem caused by a separate boost module placement, thus benefiting vehicle space design, but also allows the boost module to reuse the wiring, pipes, and fasteners of the electric drive assembly, eliminating the need for two high-voltage wiring harnesses between the boost module and the electric drive assembly. This reduces the use of wiring, pipes, and fasteners, effectively lowering overall material costs and improving overall installation efficiency. Furthermore, since the boost module is integrated into the electric drive assembly, it is protected by the housing in the event of a collision or other accident, reducing the risk of damage. Simultaneously, the elimination of the two high-voltage wiring harnesses between the boost module and the electric drive assembly avoids safety issues caused by damage to these two high-voltage wiring harnesses, thereby effectively improving overall safety.

[0021] Additional aspects and advantages of this disclosure will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this disclosure. Attached Figure Description

[0022] The above and / or additional aspects and advantages of this disclosure will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which:

[0023] Figure 1 This is a schematic diagram of the structure of an electric drive assembly proposed in one embodiment of the present disclosure;

[0024] Figure 2 This is a schematic diagram of the structure of an electric drive assembly proposed in one embodiment of the present disclosure;

[0025] Figure 3 This is a schematic diagram of the structure of an electric drive assembly proposed in one embodiment of the present disclosure;

[0026] Figure 4 This is a schematic diagram of the structure of a vehicle according to an embodiment of the present disclosure;

[0027] As shown in the figure: 1. Shell, 101. First part, 102. Second part, 103. First support, 104. Second support, 105. Rib, 106. Clearance notch;

[0028] 2. Cavity; 201. First groove; 202. Second groove;

[0029] 2011, First receiving tank; 20111, Isolation tank;

[0030] 2012, Second Reception Tank;

[0031] 3. Low-voltage input interface; 4. High-voltage output interface;

[0032] 5. Filtering unit, 501, adapter board;

[0033] 6. Switching unit, 601, First heat absorption path;

[0034] 7. Electrical control unit, 701, second heat absorption passage;

[0035] 8. Motor; 801. Neutral point interface; 802. Three-phase interface;

[0036] 9. Gearbox; 10. Coolant inlet; 11. Coolant outlet.

[0037] 12. Battery; 121. Low-voltage output interface; 122. High-voltage input interface. Detailed Implementation

[0038] To better understand the above-mentioned objectives, features, and advantages of this disclosure, the solutions disclosed herein will be further described below. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0039] like Figure 1 , Figure 2 and Figure 3 As shown in the figure, this disclosure proposes an electric drive assembly, including a housing 1, a cavity 2, a low-voltage input interface 3, a high-voltage output interface 4, a filter unit 5, a switching unit 6, and an electronic control unit 7. The cavity 2 is disposed inside the housing 1, the low-voltage input interface 3 is disposed on the housing 1, the high-voltage output interface 4 is disposed on the housing 1, the filter unit 5 is disposed inside the cavity 2, and the input end of the filter unit 5 is connected to the low-voltage input interface 3. The switching unit 6 is disposed inside the cavity 2, and the input end of the switching unit 6 is connected to the output end of the filter unit 5. The electronic control unit 7 is disposed inside the cavity 2, and the input end of the electronic control unit 7 is connected to the output end of the switching unit 6. The output end of the electronic control unit 7 is connected to the high-voltage output interface 4.

[0040] It is understandable that the electrical energy input from the low-voltage input interface 3 passes through the boost module composed of the filter unit 5, the switch unit 6, and the electronic control unit 7 in sequence and is then output from the high-voltage output interface 4. Furthermore, the electrical energy can be filtered and boosted when passing through the filter unit 5, the switch unit 6, and the electronic control unit 7. Thus, when the electric drive assembly is applied to the battery 12 system, it can realize the high-voltage charging of the high-voltage battery 12 by the low-voltage charging pile, meeting the usage requirements.

[0041] Meanwhile, since the filter unit 5, switch unit 6, and electronic control unit 7 are all located in the cavity 2, and the low-voltage input interface 3 and high-voltage output interface 4 are all located on the housing 1, the boost module is effectively integrated into the electric drive assembly. This not only greatly reduces the overall size of the boost module and the electric drive assembly, thus avoiding the space occupation problem caused by the separate placement of the boost module, which is beneficial to the space design of the vehicle, but also allows the boost module to reuse the wiring, pipes, and fasteners of the electric drive assembly, eliminating the need for two high-voltage wiring harnesses between the boost module and the electric drive assembly. This reduces the use of wiring, pipes, and fasteners, effectively reducing the overall material cost and improving the overall installation efficiency.

[0042] Since the boost module is integrated into the electric drive assembly, it is protected by the housing 1 in the event of a collision or other accident, reducing the risk of damage. At the same time, by eliminating the two high-voltage wiring harnesses between the boost module and the electric drive assembly, the safety issues caused by damage to the two high-voltage wiring harnesses between the boost module and the electric drive assembly are avoided, thereby effectively improving the overall safety.

[0043] It should be noted that the filter unit 5 can filter out noise in the power supply, making the power waveform more stable, thereby ensuring stable power boost. In turn, when the boost module is applied to the battery 12 system, it can ensure stable charging of the battery 12. The specific type of the filter unit 5 can be set according to actual needs and is not limited. For example, the filter unit 5 can be composed of capacitors, inductors and other devices.

[0044] Switching unit 6 is used for on / off control of the circuit. The specific type of switching unit 6 can be set according to actual needs and is not limited thereto. For example, switching unit 6 may include a first switch and a second switch. The first switch is used for on / off control of the positive power circuit, and the second switch is used for on / off control of the negative power circuit. The first switch and the second switch can be controlled by a control board, and the control board is controlled by an electronic control unit 7. The first switch and the second switch may each include multiple thyristors, which not only facilitates the on / off function of the first switch and the second switch, but also allows for the rectification of electrical energy using thyristors.

[0045] The electronic control unit 7 is used for controlling the motor 8 and boosting the electrical energy. The specific type of the electronic control unit 7 can be set according to actual needs and is not limited thereto. For example, the electronic control unit 7 includes a power module. When used in the forward direction, the power module can convert the DC power from the battery 12 into AC power to power the motor 8. When used in the reverse direction, the power module can boost the electrical energy supplied by the switching unit 6 and then transfer it to the battery 12. The specific type of the power module can be set according to actual needs and is not limited thereto. For example, the power module can be an IGBT (Insulated Gate Bipolar Transistor) power module.

[0046] The low-voltage input interface 3 is used to connect the low-voltage wiring harness, and the high-voltage output interface 4 is used to connect the high-voltage wiring harness. The specific types of the low-voltage input interface 3 and the high-voltage output interface 4 can be set according to actual needs and are not limited thereto. For example, the low-voltage input interface 3 may include a low-voltage positive input interface and a low-voltage negative input interface, and the high-voltage output interface 4 may include a high-voltage positive output interface and a high-voltage negative output interface.

[0047] The housing 1 is used for the installation of devices such as the filter unit 5, the switch unit 6, and the electronic control unit 7, and for providing protection for these devices. The specific type of housing 1 can be set according to actual needs, and there are no restrictions on it.

[0048] like Figure 1 , Figure 2 and Figure 3 As shown, in some embodiments, the housing 1 includes a first part 101 and a second part 102. A first groove 201 is provided on the first part 101. A filter unit 5 and a switch unit 6 are respectively disposed in the first groove 201. A low-voltage input interface 3 is disposed on the first part 101. A second groove 202 is provided on the second part 102. An electronic control unit 7 is disposed in the second groove 202. A high-voltage output interface 4 is disposed on the second part 102. The first part 101 and the second part 102 are connected, and the first groove 201 and the second groove 202 are disposed opposite to each other and together form a cavity 2.

[0049] It is understandable that the first part 101 and the second part 102 constitute the structure of the housing 1, making the housing 1 easy to disassemble and assemble, and more convenient for inspection and maintenance. At the same time, the first groove 201 and the second groove 202 form a cavity 2 within the first part 101 and the second part 102 to accommodate the filter unit 5, the switch unit 6 and the electronic control unit 7, thereby ensuring that the filter unit 5, the switch unit 6 and the electronic control unit 7 can be compactly and reasonably integrated into the housing 1, thereby achieving efficient integration of the boost module in the electric drive assembly. This avoids the space occupation of the boost module, improves the safety of the boost module, reduces the cost of the boost module and improves the installation efficiency of the boost module.

[0050] It should be noted that the connection method between the first part 101 and the second part 102 can be set according to actual needs and there are no restrictions on it. The first part 101 and the second part 102 can be connected by means of screw fixing, buckle fixing, etc.

[0051] The specific types of the first groove 201 and the second groove 202 can be set according to actual needs, and there are no restrictions on them.

[0052] like Figure 1 and Figure 2 As shown, in some embodiments, the first groove 201 includes a first receiving groove 2011 and a second receiving groove 2012. The first receiving groove 2011 is disposed on the first part 101, the filter unit 5 is disposed in the first receiving groove 2011, the second receiving groove 2012 is disposed on the first part 101, and the second receiving groove 2012 is disposed adjacent to and connected to the first receiving groove 2011. The switch unit 6 is disposed in the second receiving groove 2012.

[0053] It is understandable that the first receiving slot 2011 creates space within the first part 101 to accommodate the filter unit 5, and the second receiving slot 2012 creates space within the first part 101 to accommodate the switch unit 6. This allows the filter unit 5 and the switch unit 6 to be stably integrated within the housing 1. Furthermore, since the second receiving slot 2012 is adjacent to and interconnected with the first receiving slot 2011, the distribution of the filter unit 5 and the switch unit 6 within the housing 1 is more compact and reasonable, and their connection is more convenient. This ensures the efficient integration of the boost module into the electric drive assembly, thereby avoiding space occupation by the boost module, improving the safety of the boost module, reducing the cost of the boost module, and improving the installation efficiency of the boost module.

[0054] It should be noted that the specific types of the first receiving tank 2011 and the second receiving tank 2012 can be set according to actual needs, and there are no restrictions on this.

[0055] The arrangement of the filter unit 5 in the first receiving groove 2011, the arrangement of the switch unit 6 in the second receiving groove 2012, and the arrangement of the electronic control unit 7 in the second groove 202 can be set according to actual needs, and there are no restrictions on this.

[0056] like Figure 1 As shown, in some embodiments, the housing 1 further includes a plurality of first pillars 103, a plurality of second pillars 104, and a plurality of third pillars (not shown in the figure). The plurality of first pillars 103 are sequentially arranged in the first receiving groove 2011 along the circumference of the first receiving groove 2011. The filter unit 5 is arranged on the plurality of first pillars 103. The plurality of second pillars 104 are sequentially arranged in the second receiving groove 2012 along the circumference of the second receiving groove 2012. The switch unit 6 is arranged on the plurality of second pillars 104. The plurality of third pillars are respectively arranged in the second groove 202. The electronic control unit 7 is arranged on the plurality of third pillars.

[0057] It is understandable that by setting multiple first support pillars 103, while the filter unit 5 is installed in the first receiving groove 2011, the length of the multiple first support pillars 103 can be adjusted so that the filter unit 5 can adapt to the uneven bottom structure of the first receiving groove 2011, ensuring that the filter unit 5 can be stably set in the first receiving groove 2011, thereby ensuring the stable operation of the filter unit 5.

[0058] By setting multiple second support pillars 104, while the switch unit 6 is installed in the second receiving groove 2012, the length of the multiple second support pillars 104 can be adjusted to allow the switch unit 6 to adapt to the uneven groove bottom structure of the second receiving groove 2012, ensuring that the switch unit 6 can be stably set in the second receiving groove 2012, thereby ensuring the stable operation of the switch unit 6.

[0059] By setting up multiple third pillars, while the electronic control unit 7 is installed in the second groove 202, the length of the multiple third pillars can be adjusted to allow the electronic control unit 7 to adapt to the uneven groove bottom structure of the second groove 202, ensuring that the electronic control unit 7 can be stably installed in the second groove 202, thereby ensuring the stable operation of the electronic control unit 7.

[0060] Meanwhile, the arrangement of multiple first pillars 103, multiple second pillars 104 and multiple third pillars makes it easier to control the relative positions between the filter unit 5, the switch unit 6 and the electronic control unit 7, making the connection between the filter unit 5, the switch unit 6 and the electronic control unit 7 more convenient.

[0061] It should be noted that the specific types of the first pillar 103, the second pillar 104, and the third pillar can be set according to actual needs, and there are no restrictions on this.

[0062] The arrangement of the filter unit 5 on the first support column 103, the arrangement of the switch unit 6 on the second support column 104, and the arrangement of the electronic control unit 7 on the third support column can be set according to actual needs, and there are no restrictions on this. For example, threaded holes are provided on the first support column 103, the second support column 104, and the third support column. The filter unit 5 is fixed to the first support column 103 by multiple screws, the switch unit 6 is fixed to the second support column 104 by multiple screws, and the electronic control unit 7 is fixed to the third support column by multiple screws.

[0063] like Figure 1 , Figure 2 and Figure 3 As shown, in some embodiments, the electric drive assembly further includes a motor 8, which is disposed at the end of the first part 101 away from the second part 102. The motor 8 includes a neutral point interface 801 and a three-phase interface 802, which are respectively disposed in the first receiving groove 2011. The output terminal of the switching unit 6 is connected to the neutral point interface 801, and the input terminal of the electronic control unit 7 is connected to the three-phase interface 802.

[0064] Understandably, since the output of the switching unit 6 is connected to the neutral point interface 801 and the input of the electronic control unit 7 is connected to the three-phase interface 802, the switching unit 6 can connect the three-phase windings of the motor 8 to the electronic control unit 7 as wires. This allows the boost module to effectively reuse the three-phase windings of the motor 8, avoiding the use of two high-voltage wire harnesses between the boost module and the electronic control unit 7. This achieves efficient integration of the boost module in the electric drive assembly, thereby reducing the cost of the boost module, improving the installation efficiency of the boost module, and effectively improving the safety of the boost module.

[0065] It should be noted that when the motor 8 is in use, the power module of the electronic control unit 7 converts the electrical energy of the battery 12 into AC power and supplies it to the three-phase windings of the motor 8. When the motor 8 is not in use, the power module of the electronic control unit 7 boosts the electrical energy and supplies it to the battery 12.

[0066] The three-phase interface 802 includes three interfaces, which are respectively connected to the three windings of the three-phase winding. The neutral point interface 801 is also connected to the three windings of the three-phase winding.

[0067] like Figure 1 and Figure 2 As shown, in some embodiments, the housing 1 further includes a plurality of ribs 105, which are disposed in the first receiving groove 2011 and divide the first receiving groove 2011 into a plurality of isolation grooves 20111. The filter unit 5, the neutral point interface 801 and the three-phase interface 802 are sequentially disposed in the plurality of isolation grooves 20111.

[0068] It is understandable that by setting the rib plate 105, not only can multiple isolation slots 20111 be formed, so that the filter unit 5, the neutral point interface 801 and the three-phase interface 802 can be isolated from each other to avoid circuit faults such as short circuits, but the structure of the housing 1 can also be strengthened, so that the housing 1 has greater strength while using less material.

[0069] It should be noted that the specific type of rib 105 can be set according to actual needs, and there are no restrictions on it.

[0070] The number of ribs 105 can be set according to actual needs and is not limited. For example, there can be four ribs 105. The four ribs 105 form five isolation slots 20111 in the first receiving slot 2011. The three interfaces of the filter unit 5, the neutral point interface 801 and the three-phase interface 802 are respectively set in the five isolation slots 20111. At the same time, ribs 105 can also be set in other areas of the housing 1 to increase the strength of the housing 1.

[0071] like Figure 1 and Figure 2 As shown, in some embodiments, the filter unit 5 includes an adapter plate 501, which is disposed at one end of the first receiving groove 2011 near the second receiving groove 2012. The first end of the adapter plate 501 is connected to the output end of the switch unit 6, and the second end of the adapter plate 501 is connected to the neutral point interface 801.

[0072] It is understandable that the adapter plate 501 enables the connection between the output terminal of the switch unit 6 and the neutral point interface 801, thereby avoiding the need for additional wires or other connectors in the housing 1. This reduces the use of wiring harnesses while ensuring a stable connection between the switch unit 6 and the neutral point interface 801. Furthermore, by placing the adapter plate 501 at one end of the first receiving groove 2011 near the second receiving groove 2012, the arrangement of the adapter plate 501 and the switch unit 6 within the housing 1 becomes more compact. This not only facilitates the connection between the adapter plate 501 and the output terminal of the switch unit 6 but also enables the efficient integration of the boost module into the electric drive assembly. Thus, the adapter plate 501 effectively reduces the cost of the boost module and improves its installation efficiency.

[0073] It should be noted that the specific type of the adapter board 501 can be set according to actual needs, and there is no restriction on it. For example, the adapter board 501 can be a copper busbar, which is set on the mounting bracket of the filter unit 5.

[0074] like Figure 1 and Figure 2As shown, in some embodiments, the input end of the switch unit 6 is located at the end of the filter unit 5 that is away from the bottom of the first receiving groove 2011, the output end of the switch unit 6 is located at the first end of the adapter plate 501 that is away from the bottom of the first receiving groove 2011, and the second end of the adapter plate 501 is located at the end of the neutral point interface 801 that is away from the bottom of the first receiving groove 2011.

[0075] It is understandable that, since the input end of the switch unit 6 is located at the end of the filter unit 5 that is far from the bottom of the first receiving groove 2011, the input end of the switch unit 6 and the output end of the filter unit 5 are stacked in the housing 1 along the direction from the opening to the bottom of the first receiving groove 2011. This makes the arrangement of the switch unit 6 and the filter unit 5 in the housing 1 more compact, thereby facilitating the connection between the input end of the switch unit 6 and the output end of the filter unit 5.

[0076] Since the output end of the switch unit 6 is located at the end of the first end of the adapter plate 501 away from the bottom of the first receiving groove 2011, and the second end of the adapter plate 501 is located at the end of the neutral point interface 801 away from the bottom of the first receiving groove 2011, the output end of the switch unit 6, the adapter plate 501, and the neutral point interface 801 are stacked in the housing 1 along the direction from the opening to the bottom of the first receiving groove 2011. This makes the arrangement of the switch unit 6, the adapter plate 501, and the neutral point interface 801 in the housing 1 more compact, thereby facilitating the connection between the output end of the switch unit 6 and the neutral point interface 801.

[0077] Therefore, the stacked arrangement of the switching unit 6, the filtering unit 5, and the adapter board 501 ensures the efficient integration of the boost module in the electric drive assembly, thereby reducing the cost of the boost module and improving its installation efficiency.

[0078] It should be noted that the electrical connection method between the various components inside the housing 1 can be set according to actual needs, and there are no restrictions on it. For example, the electrical connections between the input terminal of the switch unit 6 and the output terminal of the filter unit 5, between the output terminal of the switch unit 6 and the first terminal of the adapter plate 501, between the second terminal of the adapter plate 501 and the neutral point interface 801, between the input terminal of the filter unit 5 and the low-voltage input interface 3, between the three-phase interface 802 and the electronic control unit 7, between the electronic control unit 7 and the high-voltage output interface 4, and between other components can all be achieved by screw connection, welding, or other methods.

[0079] like Figure 1 , Figure 2 and Figure 3As shown, in some embodiments, the electric drive assembly further includes a reducer 9, which is disposed at the end of the first part 101 away from the second part 102. The motor 8 is disposed at the end of the reducer 9 away from the first part 101, and the output shaft of the motor 8 is connected to the input shaft of the reducer 9. The output shaft of the reducer 9 is located on one side of the housing 1. A clearance notch 106 is provided on the side of the housing 1 near the output shaft of the reducer 9. A first receiving groove 2011 is disposed on the side of the first part 101 away from the clearance notch 106. A second receiving groove 2012 is disposed on the side of the first part 101 near the clearance notch 106. A low-voltage input interface 3 is disposed on the side of the first part 101 away from the clearance notch 106. A high-voltage output interface 4 is disposed on the side of the second part 102 near the clearance notch 106.

[0080] It is understandable that, since the output shaft of motor 8 is connected to the input shaft of reducer 9, when the output shaft of motor 8 is driven to rotate by electronic control unit 7, the input shaft of reducer 9 can rotate synchronously with the output shaft of motor 8, and after the torque conversion of reducer 9, it drives the output shaft of reducer 9 to rotate, thereby realizing the power output of electric drive assembly.

[0081] Meanwhile, by placing the output shaft of the reducer 9 on one side of the housing 1, the structure of the electric drive assembly is made more compact and reasonable, thereby reducing the space occupied by the electric drive assembly and improving the installation efficiency of the electric drive assembly. At the same time, by setting the avoidance notch 106, interference problems between the housing 1 and the output shaft of the reducer 9 are avoided, ensuring the stable operation of the electric drive assembly.

[0082] Specifically, by placing the first receiving slot 2011 on the side of the first part 101 away from the clearance notch 106, the filter unit 5 is moved away from the clearance notch 106. By placing the second receiving slot 2012 on the side of the first part 101 close to the clearance notch 106, the switch unit 6 is moved close to the clearance notch 106. By placing the low-voltage input interface 3 on the side of the first part 101 away from the clearance notch 106, the low-voltage input interface 3 is moved close to the filter unit 5. By placing the high-voltage output interface 4 on the side of the second part 102 close to the clearance notch 106, the high-voltage output interface 4 is moved close to the electronic control unit 7, while the low-voltage input interface 3 is located on opposite sides of the housing 1. This arrangement results in a more compact and rational relative position between the filter unit 5, the switch unit 6, the high-voltage output interface 4, and the low-voltage input interface 3, ensuring efficient integration of the boost module into the electric drive assembly, thereby reducing the cost of the boost module and improving its installation efficiency.

[0083] It should be noted that the reducer 9 uses gear transmission to achieve torque conversion. The specific type of reducer 9 can be set according to actual needs, and there are no restrictions on it.

[0084] The specific size of the clearance notch 106 can be set according to actual needs and is not limited thereto. However, due to the setting of the clearance notch 106 and the fact that the switch unit 6 is located on the side of the housing 1 close to the clearance notch 106, a certain clearance structure should also be set at the switch unit 6 to adapt to the structure of the housing 1.

[0085] like Figure 1 and Figure 3 As shown, in some embodiments, the electric drive assembly further includes a coolant input interface 10 and a coolant output interface 11, which are respectively disposed on the housing 1. The switching unit 6 includes a first heat absorption passage 601, the input end of which is connected to the coolant input interface 10. The electronic control unit 7 includes a second heat absorption passage 701, the input end of which is connected to the output end of the first heat absorption passage 601, and the output end of the second heat absorption passage 701 is connected to the coolant output interface 11.

[0086] It is understandable that the cooling fluid enters from the coolant inlet 10 and passes through the first heat absorption passage 601 and the second heat absorption passage 701 in sequence before being discharged from the coolant outlet 11. When the cooling fluid passes through the first heat absorption passage 601 and the second heat absorption passage 701, the cooling fluid can carry away the heat in the switching unit 6 and the electronic control unit 7, thereby achieving the cooling of the switching unit 6 and the electronic control unit 7 and ensuring the stable operation of the switching unit 6 and the electronic control unit 7.

[0087] By connecting the input end of the first heat absorption passage 601 to the coolant input interface 10 and the output end of the first heat absorption passage 601 to the second heat absorption passage 701, the boost module utilizes the cooling circuit within the electric drive assembly for cooling. This achieves efficient integration of the boost module into the electric drive assembly while avoiding the need for additional cooling circuits, effectively reducing the space occupied by the boost module, lowering its cost, and improving its installation efficiency.

[0088] By setting the coolant inlet 10 and coolant outlet 11 on the housing 1, it is easy to connect the first heat absorption passage 601 and the second heat absorption passage 701 to the external pipeline, which effectively improves the installation efficiency of the boost module.

[0089] It should be noted that the cooling fluid is used to absorb heat from the first heat absorption passage 601 and the second heat absorption passage 701. The specific type of cooling fluid can be set according to actual needs and is not limited thereto. For example, the cooling fluid can be cooling water.

[0090] The first heat absorption passage 601 is used to introduce cooling fluid. The specific type of the first heat absorption passage 601 can be set according to actual needs and is not limited thereto. The length of the first heat absorption passage 601 in the switching unit 6 can be increased by bending, diverting or other means to improve the cooling efficiency of the cooling fluid on the switching unit 6.

[0091] The second heat absorption passage 701 is used to introduce cooling fluid. The specific type of the second heat absorption passage 701 can be set according to actual needs and is not limited thereto. The length of the second heat absorption passage 701 in the electronic control unit 7 can be increased by bending, diverting or other means to improve the cooling efficiency of the cooling fluid on the switching unit 6.

[0092] The coolant inlet 10 and coolant outlet 11 are used to connect to external pipelines. The specific types of the coolant inlet 10 and coolant outlet 11 can be set according to actual needs and there are no restrictions on them.

[0093] This disclosure also proposes a battery 12 system, including a battery 12 and an electric drive assembly as described in this disclosure. The battery 12 includes a low-voltage output interface 121 and a high-voltage input interface 122. The low-voltage input interface 3 of the electric drive assembly is connected to the low-voltage output interface 121, and the high-voltage output interface 4 of the electric drive assembly is connected to the high-voltage input interface 122.

[0094] Understandably, the battery 12 transfers low-voltage electrical energy to the electric drive assembly through the connection between the low-voltage output interface 121 and the low-voltage input interface 3. The low-voltage electrical energy passes through the boost module composed of the filter unit 5, the switch unit 6, and the electronic control unit 7 in sequence, and is then output to the battery 12 through the connection between the high-voltage output interface 4 and the high-voltage input interface 122. The low-voltage electrical energy can be filtered and boosted when passing through the filter unit 5, the switch unit 6, and the electronic control unit 7. Thus, through the configuration of the electric drive assembly, the low-voltage charging pile can be used to charge the high-voltage battery 12 at high voltage, meeting the usage requirements.

[0095] Meanwhile, since the filter unit 5, switch unit 6, and electronic control unit 7 are all located in the cavity 2, and the low-voltage input interface 3 and high-voltage output interface 4 are all located on the housing 1, the boost module is effectively integrated into the electric drive assembly. This not only greatly reduces the overall size of the boost module and the electric drive assembly, thus avoiding the space occupation problem caused by the separate placement of the boost module, which is beneficial to the space design of the vehicle, but also allows the boost module to reuse the wiring, pipes, and fasteners of the electric drive assembly, eliminating the need for two high-voltage wiring harnesses between the boost module and the electric drive assembly. This reduces the use of wiring, pipes, and fasteners, effectively reducing the overall material cost and improving the overall installation efficiency.

[0096] Since the boost module is integrated into the electric drive assembly, it is protected by the housing 1 in the event of a collision or other accident, reducing the risk of damage. At the same time, by eliminating the two high-voltage wiring harnesses between the boost module and the electric drive assembly, the safety issues caused by damage to the two high-voltage wiring harnesses between the boost module and the electric drive assembly are avoided, thereby effectively improving the overall safety.

[0097] It should be noted that the specific type of the Battery 12 system can be set according to actual needs, and there are no restrictions on it.

[0098] like Figure 4 As shown in the embodiments of this disclosure, a vehicle is also proposed, characterized in that it includes a battery 12 system as described in the embodiments of this disclosure.

[0099] Understandably, the battery 12 transfers low-voltage electrical energy to the electric drive assembly through the connection between the low-voltage output interface 121 and the low-voltage input interface 3. The low-voltage electrical energy passes through the boost module composed of the filter unit 5, the switch unit 6, and the electronic control unit 7 in sequence, and is then output to the battery 12 through the connection between the high-voltage output interface 4 and the high-voltage input interface 122. The low-voltage electrical energy can be filtered and boosted when passing through the filter unit 5, the switch unit 6, and the electronic control unit 7. Thus, through the configuration of the electric drive assembly, the low-voltage charging pile can be used to charge the high-voltage battery 12 at high voltage, meeting the usage requirements.

[0100] Meanwhile, since the filter unit 5, switch unit 6, and electronic control unit 7 are all located in the cavity 2, and the low-voltage input interface 3 and high-voltage output interface 4 are all located on the housing 1, the boost module is effectively integrated into the electric drive assembly. This not only greatly reduces the overall size of the boost module and the electric drive assembly, thus avoiding the space occupation problem caused by the separate placement of the boost module, which is beneficial to the space design of the vehicle, but also allows the boost module to reuse the wiring, pipes, and fasteners of the electric drive assembly, eliminating the need for two high-voltage wiring harnesses between the boost module and the electric drive assembly. This reduces the use of wiring, pipes, and fasteners, effectively reducing the overall material cost and improving the overall installation efficiency.

[0101] Since the boost module is integrated into the electric drive assembly, it is protected by the housing 1 in the event of a collision or other accident, reducing the risk of damage. At the same time, by eliminating the two high-voltage wiring harnesses between the boost module and the electric drive assembly, the safety issues caused by damage to the two high-voltage wiring harnesses between the boost module and the electric drive assembly are avoided, thereby effectively improving the overall safety.

[0102] It should be noted that the specific type of vehicle can be set according to actual needs, and there are no restrictions on it. For example, the vehicle can be a fuel vehicle, an electric vehicle, etc.

[0103] When the electric drive assembly is installed in a vehicle, it can be located at the rear end of the vehicle subframe. Since the boost module is integrated into the electric drive assembly, the boost module is less likely to be damaged when the vehicle is subjected to a rear-end impact.

[0104] The electric drive assembly may also include a first bracket and a second bracket. The first bracket is located at the end of the motor 8 away from the reducer 9, and the end of the first bracket away from the motor 8 is provided with a first mounting hole. The second bracket is located at the end of the housing 1 away from the reducer 9, and the end of the second bracket away from the housing 1 is provided with a second mounting hole. The first bracket and the second bracket are located on the side of the housing 1 away from the clearance notch 106.

[0105] Therefore, the arrangement of the first and second brackets, along with the first mounting hole on the first bracket and the second mounting hole on the second bracket, facilitates the installation of the electric drive assembly in the vehicle, thereby effectively improving the installation efficiency of the electric drive assembly. Specifically, when the electric drive assembly is installed on the subframe, the first and second mounting holes can be used to install suspension mounts.

[0106] In this document, relational terms such as “first” and “second” are used merely to distinguish one entity or operation from another, without necessarily requiring or implying any such actual relationship or order between these entities or operations. Furthermore, the term “comprising” or any other variations thereof is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase “comprising one…” does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. An electric drive assembly, characterized by The electric drive assembly comprises: a shell; a cavity arranged in the shell; a low-voltage input interface arranged on the shell; a high-voltage output interface arranged on the shell; a filter unit arranged in the cavity, an input end of the filter unit being connected with the low-voltage input interface; a switch unit arranged in the cavity, an input end of the switch unit being connected with an output end of the filter unit; an electric control unit arranged in the cavity, an input end of the electric control unit being connected with an output end of the switch unit, and an output end of the electric control unit being connected with the high-voltage output interface. The shell comprises a first part, and a first recess is arranged on the first part. The first recess comprises a first accommodating groove arranged on the first part, and the filter unit is arranged in the first accommodating groove. The shell further comprises a plurality of rib plates arranged in the first accommodating groove, and the plurality of rib plates separate the first accommodating groove into a plurality of isolated grooves. The motor comprises a neutral point interface and a three-phase interface, and the filter unit, the neutral point interface and the three-phase interface are arranged in the plurality of isolated grooves in sequence.

2. The electric drive assembly according to claim 1, wherein: the filter unit and the switch unit are arranged in the first recess, and the low-voltage input interface is arranged on the first part; the shell further comprises a second part, and a second recess is arranged on the second part. The electric control unit is arranged in the second recess, and the high-voltage output interface is arranged on the second part; the first part is connected with the second part, and the first recess and the second recess are oppositely arranged and jointly form the cavity.

3. The electric drive assembly of claim 2, wherein, The first recess further comprises: a second accommodating groove arranged on the first part, and the second accommodating groove is arranged adjacent to the first accommodating groove and communicates with the first accommodating groove. The switch unit is arranged in the second accommodating groove.

4. The electric drive assembly of claim 3, wherein, The shell further comprises: a plurality of first struts arranged in the first accommodating groove in sequence along a circumferential direction of the first accommodating groove. The filter unit is arranged on the plurality of first struts; a plurality of second struts arranged in the second accommodating groove in sequence along a circumferential direction of the second accommodating groove. The switch unit is arranged on the plurality of second struts; a plurality of third struts arranged in the second recess in sequence. The electric control unit is arranged on the plurality of third struts.

5. The electric drive assembly of claim 3, wherein, The electric drive assembly further comprises: the motor arranged at an end of the first part away from the second part. An output end of the switch unit is connected with the neutral point interface, and an input end of the electric control unit is connected with the three-phase interface.

6. The electric drive assembly of claim 5, wherein, The filter unit comprises: An adapter plate is arranged at one end of the first accommodating groove close to the second accommodating groove, a first end of the adapter plate is connected with an output end of the switch unit, and a second end of the adapter plate is connected with the neutral point interface.

7. The electric drive assembly of claim 6, wherein, An input end of the switch unit is located at one end of the filter unit output end away from the bottom of the first accommodating groove, an output end of the switch unit is located at one end of the first end of the adapter plate away from the bottom of the first accommodating groove, and the second end of the adapter plate is located at one end of the neutral point interface away from the bottom of the first accommodating groove.

8. The electric drive assembly of claim 5, wherein, The electric drive assembly further comprises: A speed reducer is arranged at one end of the first part away from the second part, the motor is arranged at one end of the speed reducer away from the first part, and an output shaft of the motor is connected with an input shaft of the speed reducer, and an output shaft of the speed reducer is located at one side of the housing. The housing is provided with an avoiding gap at one side close to the output shaft of the speed reducer, the first accommodating groove is arranged at one side of the first part away from the avoiding gap, the second accommodating groove is arranged at one side of the first part close to the avoiding gap, the low-voltage input interface is arranged at one side of the first part away from the avoiding gap, and the high-voltage output interface is arranged at one side of the second part close to the avoiding gap.

9. The electric drive assembly according to any one of claims 1-8, wherein The electric drive assembly further comprises a cooling liquid input interface and a cooling liquid output interface, and the cooling liquid input interface and the cooling liquid output interface are arranged on the housing respectively. The switch unit comprises a first heat absorption path, and an input end of the first heat absorption path is connected with the cooling liquid input interface. The electric control unit comprises a second heat absorption path, an input end of the second heat absorption path is connected with an output end of the first heat absorption path, and an output end of the second heat absorption path is connected with the cooling liquid output interface.

10. A battery system characterized by, The battery comprises a low-voltage output interface and a high-voltage input interface. The electric drive assembly according to any one of claims 1-9, wherein the low-voltage input interface of the electric drive assembly is connected with the low-voltage output interface, and the high-voltage output interface of the electric drive assembly is connected with the high-voltage input interface. The battery system according to claim 10.

11. A vehicle characterized by comprising: ​ ​

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