Controller, electric assembly, driving system, and vehicle

Abstract

A controller, an electric assembly, a driving system, and a vehicle. The controller (800) comprises a box (10), a power module (83), and an A-wire conductive assembly (860). The power module (83) and the A-line conductive assembly (860) are arranged in the box (10). The power module (83) is connected to a first end of a three-phase winding (701) of a motor (700), and positive and negative electrodes of the battery pack (600). A first end (861) of the A-wire conductive assembly (860) is connected to the middle of two sub-battery packs (U1, U2) connected in series in the battery pack (600), and a second end (862) of the A-wire conductive assembly (860) is connected to a second end of at least one phase winding (701) of the motor (700).

Description

Controllers, electric powertrains, drive systems, and vehicles

[0001] This application claims priority to the patent application with application number CN202310641820.8 filed with the State Intellectual Property Office of China on May 31, 2023, and invention name “Controller, electric assembly, drive system and vehicle”, the entire contents of which are incorporated into this application by reference. Technical Field

[0002] The present application relates to the technical field of electric vehicles, and in particular to a controller, an electric assembly, a drive system and a vehicle (electric vehicle). Background Art

[0003] The existing electric vehicle drive system includes a motor, a controller, and a battery pack. The controller is electrically connected to the motor and the battery pack to transmit electrical energy from the battery pack to the motor, thereby enabling the motor to drive the wheels.

[0004] Specifically, the controller includes a power module, and the positive and negative poles of the battery pack are connected to the positive and negative poles of the controller. The power module is provided with a three-phase bridge arm, which is connected to one end of the three-phase winding of the motor, so that the battery pack supplies power to the motor through the power module. In some electric vehicles, the battery pack includes two sub-battery packs connected in series. By setting an A wire between the other end of the motor winding and the middle of the two sub-battery packs in series, the battery can self-heat and thus operate at a suitable temperature. This will obviously increase the number of product components and the difficulty of design. How to improve the safety and stability of the drive system is an urgent problem that needs to be solved.

[0005] Summary of the Invention

[0006] The Summary of the Invention introduces a series of simplified concepts that will be further described in the Detailed Description of the Invention. The Summary of the Invention of this application is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0007] To at least partially solve the above problems, the first aspect of the present application provides a controller, comprising:

[0008] Box;

[0009] A power module is provided in the box, and the power module includes:

[0010] The three-phase terminal blocks of the power module are used to connect the first ends of the three-phase windings of the motor respectively.

[0011] The power module positive terminal is used to connect at least indirectly to the positive electrode of the battery pack, and

[0012] a power module negative electrode terminal, for at least indirectly connecting to the negative electrode of the battery pack; and

[0013] An A-line conductive component is provided in the box, and the A-line conductive component includes a first end of the A-line conductive component and a second end of the A-line conductive component. The first end of the A-line conductive component is used to be at least indirectly connected to the middle of the first sub-battery pack and the second sub-battery pack connected in series in the battery pack, and the second end of the A-line conductive component is used to be at least indirectly connected to the second end of the winding of at least one phase of the motor.

[0014] Optionally, the controller further includes a capacitor assembly, the capacitor assembly including a first capacitor core, and a first capacitor positive conductive sheet and a capacitor negative conductive sheet connected to the first capacitor core.

[0015] One end of the first capacitor positive electrode conductive sheet is connected to the positive terminal of the power module, and the other end of the first capacitor positive electrode conductive sheet is used to be at least indirectly connected to the positive electrode of the battery pack.

[0016] One end of the capacitor negative electrode conductive sheet is connected to the negative electrode terminal of the power module, and the other end of the capacitor negative electrode conductive sheet is used to be at least indirectly connected to the negative electrode of the battery pack.

[0017] Optionally, the capacitor assembly is provided with an A-line support position, the A-line support position is connected to the first end of the A-line conductive assembly, and the first end of the A-line conductive assembly is used to be connected to the battery pack.

[0018] Optionally, the box includes a first plug interface, and the A-line support position is arranged adjacent to the first plug interface.

[0019] Optionally, the box includes a first plug interface, and the first plug interface is used for the first end of the A-line conductive component to pass directly or indirectly through to connect with the battery pack.

[0020] Optionally, the capacitor assembly is provided with an A-line support position, which is used to be at least indirectly connected to the middle of the first sub-battery pack and the second sub-battery pack connected in series through a connector, and the A-line support position is connected to the first end of the A-line conductive assembly, wherein the A-line support position is arranged adjacent to the first plug interface.

[0021] Optionally, the capacitor assembly further includes a capacitor shell, the A-line conductive assembly is at least partially disposed in the capacitor shell, and the capacitor shell is an insulating shell.

[0022] Optionally, the controller further includes a heat conductor, which is disposed between the A-line conductive component and an inner wall of the controller housing.

[0023] Optionally, the controller further includes an insulating member, which is arranged between the heat conductive member and the inner wall of the box.

[0024] Furthermore, the upper surface of the insulating member contacts the lower surface of the upper cover of the box body, the lower surface of the insulating member contacts the upper surface of the heat conductive member, and the lower surface of the heat conductive member contacts the A-line conductive component.

[0025] Optionally, the A-line conductive assembly includes a first A-line conductive member disposed above the capacitor shell, and the heat conductive member is disposed between the first A-line conductive member and the inner wall of the box.

[0026] Optionally, the insulating member and the heat conducting member have the same cross-sectional shape.

[0027] Optionally, the heat conducting element is configured as heat conducting mud.

[0028] Optionally, the box body further includes a second opening, and the second opening is used for the second end of the A-line conductive component to pass through directly or indirectly and then be connected to the motor.

[0029] Optionally, the box further includes a second opening, and the second end of the A-line conductive component is disposed adjacent to the second opening, or the second end of the A-line conductive component is disposed at the second opening.

[0030] Optionally, the controller further includes a first wiring seat, the first wiring seat is arranged adjacent to the second opening, and the first wiring seat includes a first wiring seat three-phase terminal connected to the three-phase terminal of the power module.

[0031] The second end of the second A-line conductive member is connected to the first wiring seat.

[0032] Optionally, the A-line conductive component includes:

[0033] a first A-line conductive member, the first A-line conductive member having a first A-line conductive member first end and a first A-line conductive member second end, the first A-line conductive member first end being the first end of the A-line conductive component; and

[0034] The second A-line conductive member has a second A-line conductive member first end and a second A-line conductive member second end, the second A-line conductive member first end is connected to the first A-line conductive member second end, and the second A-line conductive member second end is the second end of the A-line conductive component.

[0035] Optionally, the controller further includes a charging socket for connecting a charging device.

[0036] The A-line conductive component further includes a third end of the A-line conductive component, and the third end of the A-line conductive component is used to be at least indirectly connected to the positive electrode of the charging device.

[0037] Optionally, the charging socket includes a positive charging terminal and a negative charging terminal.

[0038] The positive charging terminal is used to connect to the positive pole of the charging device, and the negative charging terminal is used to connect to the negative pole of the charging device.

[0039] The third end of the A-line conductive component is used to be at least indirectly connected to the charging positive terminal.

[0040] Furthermore, the A-line conductive assembly further includes a third A-line conductive member, wherein the third A-line conductive member has a third A-line conductive member first end and a third A-line conductive member second end, wherein:

[0041] The first A-line conductive element further includes a first A-line conductive element third end, the first end of the third A-line conductive element is connected to the third end of the first A-line conductive element, and the second end of the third A-line conductive element is the third end of the A-line conductive component; or

[0042] The first end of the third A-line conductive member is connected to the first end of the second A-line conductive member, and the second end of the third A-line conductive member is the third end of the A-line conductive component.

[0043] Furthermore, the A-line conductive assembly further includes a fourth A-line conductive member, wherein:

[0044] Two ends of the fourth A-line conductive member are respectively connected to the third end of the first A-line conductive member and the first end of the third A-line conductive member, so that the first end of the third A-line conductive member is connected to the third end of the first A-line conductive member; or

[0045] Two ends of the fourth A-line conductive member are respectively connected to the first end of the second A-line conductive member and the first end of the third A-line conductive member, so that the first end of the third A-line conductive member is connected to the first end of the second A-line conductive member.

[0046] Optionally, the controller further includes:

[0047] a sub-positive electrode conductive component, the sub-positive electrode conductive component comprising a sub-positive electrode conductive component first end and a sub-positive electrode conductive component second end, the sub-positive electrode conductive component first end being connected to the charging positive electrode terminal, and

[0048] A first switching element, wherein the first end of the first switching element is connected to the second end of the sub-positive conductive component, and the second end of the first switching element is connected to the second end of the third A-line conductive component.

[0049] Optionally, the sub-positive electrode conductive component includes:

[0050] a first positive electrode conductive member, the first positive electrode conductive member comprising a first positive electrode conductive member first end and a first positive electrode conductive member second end, wherein the first positive electrode conductive member first end is the first end of the sub-positive electrode conductive assembly;

[0051] A second positive conductive member, the second positive conductive member includes a second positive conductive member first end and a second positive conductive member second end, wherein the second positive conductive member first end is connected to the first positive conductive member second end, and the second positive conductive member second end is the second end of the sub-positive conductive assembly.

[0052] Optionally,

[0053] The first positive electrode conductive member further includes a first positive electrode conductive member third end,

[0054] The controller further includes:

[0055] a second switching element, wherein a first terminal of the second switching element is connected to a third terminal of the first positive conductive member;

[0056] a third positive conductive member, the third positive conductive member comprising a third positive conductive member first end and a third positive conductive member second end, wherein the third positive conductive member first end is connected to the second end of the second switching element, and the third positive conductive member second end is used to be at least indirectly connected to the positive electrode of the battery pack.

[0057] Optionally, the second positive conductive member further includes a second positive conductive member third end, and the second positive conductive member third end is connected to the capacitor.

[0058] Optionally, the controller further includes:

[0059] A sub-negative electrode conductive component, the sub-negative electrode conductive component includes a sub-negative electrode conductive component first end and a sub-negative electrode conductive component second end, the sub-negative electrode conductive component first end is connected to the charging negative electrode terminal, and the sub-negative electrode conductive component second end is used to be at least indirectly connected to the negative electrode of the battery pack.

[0060] Optionally, the sub-negative electrode conductive component includes:

[0061] a first negative electrode conductive member, the first negative electrode conductive member comprising a first negative electrode conductive member first end and a first negative electrode conductive member second end, wherein the first negative electrode conductive member first end is the first end of the sub-negative electrode conductive assembly;

[0062] A second negative conductive member, the second negative conductive member includes a second negative conductive member first end and a second negative conductive member second end, wherein the second negative conductive member first end is connected to the first negative conductive member second end, and the second negative conductive member second end is the second end of the sub-negative conductive assembly.

[0063] Optionally, the second end of the A-line conductive component is used to be at least indirectly connected to the second end of the three-phase winding of the motor.

[0064] A second aspect of the present application provides an electric assembly, comprising:

[0065] a motor comprising a three-phase winding; and

[0066] A controller according to any one of the above technical solutions,

[0067] The three-phase connection terminals of the power module are respectively connected to the first ends of the three-phase windings, and the second end of the A-line conductive component is at least indirectly connected to the second end of at least one phase of the winding.

[0068] Optionally, the second end of the A-line conductive component is at least indirectly connected to the second end of the three-phase winding.

[0069] Optionally,

[0070] The motor includes a motor terminal block, and the electrode terminal block includes a motor A-line terminal, an electric control A-line terminal, a motor three-phase line terminal, and an electric control three-phase line terminal. The motor A-line terminal is connected to the electric control A-line terminal, and the motor three-phase line terminal is correspondingly connected to the electric control three-phase line terminal.

[0071] Among them, the motor three-phase line terminal is used to connect the first end of the three-phase winding, the motor A line terminal is used to connect the second end of the winding belonging to at least one phase, the electronic control three-phase line terminal is used to connect the power module three-phase terminal, and the electronic control A line terminal is used to at least indirectly connect the second end of the A line conductive component.

[0072] Optionally, the controller also includes a first terminal block, which includes a first terminal block three-phase terminal, the first terminal block three-phase terminal is connected to the electric control three-phase line terminal, and the second end of the A line conductive component is connected to the electric control A line terminal through the first terminal block.

[0073] A third aspect of the present application provides a drive system, comprising:

[0074] A battery pack for providing power, the battery pack comprising a first sub-battery pack and a second sub-battery pack connected in series; and

[0075] According to any one of the above technical solutions,

[0076] Among them, the first end of the A-line conductive component is at least indirectly connected to the middle of the first sub-battery pack and the second sub-battery pack connected in series, the positive terminal of the power module is at least indirectly connected to the positive pole of the battery pack, and the negative terminal of the power module is at least indirectly connected to the negative pole of the battery pack.

[0077] Optionally, the drive system also includes a first connecting component for connecting the battery pack and the controller, the first connecting component including a first A-wire, one end of the first A-wire being used to connect to the first end of the A-wire conductive component, and the other end of the first A-wire being used to connect to the middle of the first sub-battery pack and the second sub-battery pack connected in series.

[0078] Optionally, the positive terminal of the power module is used to be at least indirectly connected to the positive electrode of the battery pack via a positive DC bus.

[0079] The negative terminal of the power module is used to at least indirectly connect to the positive electrode of the battery pack through the negative DC bus.

[0080] The first connecting assembly further includes a portion of the positive DC bus and a portion of the negative DC bus.

[0081] The first A line is located between the portion of the positive DC bus and the portion of the negative DC bus.

[0082] Optionally, one end of the first A line used for connecting to the controller, one end of the portion of the positive DC bus used for connecting to the controller, and one end of the portion of the negative DC bus used for connecting to the controller are all passed through the magnetic ring.

[0083] A fourth aspect of the present application provides a vehicle, comprising a drive system according to any one of the above technical solutions, wherein the motor is connected to the wheels of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0084] In order to make the advantages of the present application more easily understood, the present application briefly described above will be described in more detail with reference to specific embodiments shown in the accompanying drawings. It will be understood that these drawings depict only typical embodiments of the present application and are therefore not to be considered as limiting the scope of protection thereof. The accompanying drawings describe and explain the present application with additional specificity and detail.

[0085] In the attached figure:

[0086] FIG1 is a perspective schematic diagram of an electric assembly according to a preferred embodiment of the present application;

[0087] FIG2 is a schematic diagram of a circuit principle of a driving system according to a preferred embodiment of the present application;

[0088] 3 is an exploded schematic diagram of some components of a controller, a first connecting assembly, and a second connecting assembly of a drive system according to a preferred embodiment of the present application;

[0089] FIG4 is a schematic top view of the electric assembly shown in FIG1 , wherein the upper cover of the controller is omitted;

[0090] FIG5 is a schematic diagram showing the connection between the controller and the first connecting assembly of the drive system according to a preferred embodiment of the present application;

[0091] FIG6 is an exploded perspective schematic diagram of the charging socket shown in FIG3 ;

[0092] FIG7 is an exploded perspective schematic diagram of the electric assembly shown in FIG1 ;

[0093] FIG8 is a schematic side cross-sectional view of a controller according to a preferred embodiment of the present application;

[0094] FIG9 is a schematic diagram showing a specific example of the composition of the A-line conductive component of the controller shown in FIG3 ;

[0095] FIG10 is a schematic diagram showing another specific example of the composition of the A-line conductive component of the controller shown in FIG3 ;

[0096] FIG11 is a schematic side cross-sectional view of the first contactor shown in FIG3 ;

[0097] FIG12 is a schematic diagram of the composition of the sub-positive electrode conductive component of the controller shown in FIG3;

[0098] FIG13 is a schematic diagram of the composition of the sub-negative electrode conductive component of the controller shown in FIG3 ;

[0099] FIG14 is a schematic diagram of a capacitor component and a power module of a controller according to a preferred embodiment of the present application;

[0100] FIG15 is a top perspective schematic diagram of the capacitor assembly shown in FIG14;

[0101] FIG16 is a bottom perspective schematic diagram of the capacitor assembly shown in FIG14;

[0102] FIG17 is an exploded perspective schematic diagram of the capacitor assembly shown in FIG14 ;

[0103] FIG18 is a partial enlarged schematic diagram of the connection between the capacitor assembly and the power module shown in FIG14 ;

[0104] FIG19 is a schematic diagram of an exploded view of the connection between the first connecting component of the drive system shown in FIG2 and the battery pack.

[0105] Explanation of the reference numerals: 4: Second connecting component 9: First connecting component 9A: First plug connector 9B: Second plug connector 10: Box body 32: Second opening 51: Capacitor shell 55: Capacitor assembly 56: Conductive connecting piece 56A: Overlap position 57: Second positioning component 58: Positive DC bus terminal 58A: Positive DC bus support position 59: A-line support position 60: Negative DC bus terminal 60A: Negative DC bus support position 62: First fuse terminal 63: Second fuse terminal 66: Second fuse output terminal 67: First capacitor positive input terminal 68: Capacitor negative input terminal 70: Negative connection terminal 71: Positive connection terminal 72: Second capacitor positive input Terminal 75: Capacitor negative output terminal 76: Capacitor insulator 77: Capacitor positive output terminal 79: Power module positive terminal 79A: Sub-power module positive terminal 80: Power module insulator 81: Power module negative terminal 81A: Sub-power module negative terminal 82: First positioning component 83: Power module 84: Three-phase terminal 91: Insulator 92: Second negative conductive member 92A: Second negative conductive member first end 92B: Second negative conductive member second end 93: First magnetic ring 94: Second magnetic ring 99: First terminal block 100: Hall 101: First terminal block three-phase terminal 102: Heat conductor 115: Charging socket 11 7: Third magnetic ring 116A: First magnetic ring seat capacitor 116B: Second magnetic ring seat capacitor 122: First switching element / first contactor 123: Third A-line conductive member 123A: Third A-line conductive member first end 123B: Third A-line conductive member second end 124: Second switching element / second contactor 125: First positive conductive member 125A: First positive conductive member first end 125B: First positive conductive member second end 125C: First positive conductive member third end 126: First negative conductive member 126A: First negative conductive member first end 126B: First negative conductive member second end 127: Second positive conductive member 127A: Second positive conductive member first end 12 7B: Second end of second positive conductive member 127C: Third end of second positive conductive member 128: Third positive conductive member 128A: First end of third positive conductive member 128B: Second end of third positive conductive member 131: Fourth A-line conductive member 131A: First end of fourth A-line conductive member 131B: Second end of fourth A-line conductive member 132: Fixing seat 133: Third fuse 134: First fuse 135: Second fuse 136: Second A-line conductive member 136A: First end of second A-line conductive member 136B: Second end of second A-line conductive member 142: Motor A-line terminal 143: Motor three-phase line terminal 144: Motor A-line connection terminal 145: Motor three-phase line connection terminal146: Motor terminal block 147: Electric control three-phase line terminal 148: Electric control A line terminal 166: Magnetic ring mounting slot 167: Wire harness clamp 168: First grounding terminal 169A: First capacitor mounting slot 169B: Second capacitor mounting slot 169C: First slot sidewall 169D: Second slot sidewall 170: Positive charging terminal 171: Negative charging terminal 172: Second grounding terminal 173: First capacitor 174: Second capacitor 176: First A line conductive element 176A: First end of first A line conductive element 176B: Second end of first A line conductive element 176C: Third end of first A line conductive element 179: First capacitor core 181: Second capacitor Capacitor 600: Battery pack 609: Battery pack socket 601: Battery pack A wire copper bus 602: Battery pack positive busbar copper bus 603: Battery pack negative busbar copper bus 611: Battery pack A wire terminal 612: Battery pack positive busbar terminal 613: Battery pack negative busbar terminal 621: Contactor first contact 622: Contactor second contact 623A / 623B: Terminal block 624: Moving plate 625: Spring 626: Connecting shaft 627: Limiting column 628: Coil 629: Magnet 700: Motor 701: Motor winding 800: Controller 801: A wire 801A: First A wire 801B: Third Y capacitor 801C: Battery pack A Line 803: Three-phase bridge arm 804: Upper bridge 805: Lower bridge 806: Second conductive component 807: Positive DC bus 807B: First Y capacitor 808: Negative DC bus 808B: Second Y capacitor 809: First socket 810: First plug interface 811: First A-line connection terminal / plug connector A-line connection terminal 812: Second A-line connection terminal 813: A-line conductor segment 814: First A-line 821: First positive DC bus connection terminal / plug connector positive DC bus connection terminal 822: Second positive DC bus connection terminal 823: Positive DC bus conductor segment 831: First negative DC bus connection terminal / plug connector negative DC bus connection terminal Sub-832: Second negative DC bus terminal 833: Negative DC bus conductor segment 840: Negative conductive component 841: Negative conductive component first end 842: Negative conductive component second end 843: Sub-negative conductive component 844: Sub-negative conductive component first end 845: Sub-negative conductive component second end 850: Positive conductive component 851: Positive conductive component first end 852: Positive conductive component second end 853: Sub-positive conductive component 854: Sub-positive conductive component first end 855: Sub-positive conductive component second end 860: Line A conductive component 861: Line A conductive component first end 862: Line A conductive component second end 863: Line A conductive component third end865: Additional positive conductive component 866: Additional positive conductive component first end 867: Additional positive conductive component second end 870: Electric assembly 880: Power socket 881: Insulating substrate 882: Power socket 883: Isolation wall 884: Power module 885: First side of the socket 886: Second side of the socket 890: Drive system 901: First capacitor positive conductive sheet 902: First capacitor positive conductive sheet body 903: Second capacitor positive conductive sheet 904: Second capacitor positive conductive sheet body 905: Capacitor negative conductive sheet 906: Capacitor negative conductive sheet body 911: Insulating base U1: First sub-battery pack U2: Second sub-battery pack DETAILED DESCRIPTION

[0106] In the following description, a large number of specific details are provided to provide a more thorough understanding of the present application. However, it will be apparent to those skilled in the art that the present application can be implemented without one or more of these details. In other examples, some technical features well known in the art are not described in order to avoid confusion with the present application.

[0107] In order to thoroughly understand the present application, a detailed description will be provided in the following description. It should be understood that these embodiments are provided to make the disclosure of the present application thorough and complete, and to fully convey the concepts of these exemplary embodiments to those of ordinary skill in the art. Obviously, the implementation of the embodiments of the present application is not limited to the specific details familiar to those skilled in the art. The preferred embodiments of the present application are described in detail below, but in addition to these detailed descriptions, the present application may also have other embodiments.

[0108] Ordinal numbers such as "first" and "second" used in this application are merely identifiers and do not convey any other meaning, such as a specific order. Furthermore, for example, the term "first component" itself does not imply the existence of a "second component," nor does the term "second component" itself imply the existence of a "first component." The use of terms such as "first," "second," and "third" does not indicate any order; these terms should be interpreted as names.

[0109] It should be noted that the terms "upper", "lower", "front", "back", "left", "right", "inside", "outside" and similar expressions used in this application are for illustrative purposes only and are not restrictive.

[0110] The present application provides a capacitor assembly for a controller, a magnetic ring seat assembly, a controller including the capacitor assembly and / or the magnetic ring seat assembly and at least for controlling a motor, an electric powertrain including the controller, a drive system including the electric powertrain, and a vehicle including the drive system. It is understood that the vehicle according to the present application is an electric vehicle.

[0111] Now, exemplary embodiments according to the present application will be described in more detail with reference to the accompanying drawings.

[0112] As shown in FIG1 , in a preferred embodiment, an electric assembly 870 according to the present application includes a controller 800 and a motor 700 according to a preferred embodiment of the present application. As shown in FIG2 , in a preferred embodiment, a drive system 890 according to the present application includes a battery pack 600 and an electric assembly 870 according to a preferred embodiment of the present application. The controller 800 is connected to a charging device (e.g., a stun gun, a distribution box) via a second connection component 4 (e.g., a cable lug) and is connected to the battery pack 600 via a first connection component 9 (e.g., a cable lug).

[0113] The battery pack 600 is used to store energy and provide power (power battery), while the controller 800 is used to control the motor 700, which is connected to the wheels of the electric vehicle to drive the wheels. The controller 800 is connected to the motor 700 and the battery pack 600 to transmit the power from the battery pack 600 to the motor 700.

[0114] In some embodiments, the controller 800 includes a housing 10. The housing 10 is provided with multiple openings or sockets (plug interfaces) for connecting to the motor 700, battery pack 600, and charging equipment via connecting cables. For example, the housing 10 is provided with a charging socket 115, into which the second connecting component 4 is plugged, thereby connecting to the charging equipment.

[0115] In some embodiments, the box body 10 is provided with a first plug interface 810 , which is used to plug in the first connecting component 9 to connect with the charging pack 600 .

[0116] The working principle of the drive system 890 will be briefly introduced below with reference to FIG. 2 .

[0117] The motor 700 includes a three-phase winding 701 (inductor).

[0118] The controller 800 includes a power module 83. In some embodiments, the power module 83 includes a three-phase bridge arm 803, and each phase bridge arm includes an upper bridge 804 and a lower bridge 805. Each phase bridge arm 803 includes, for example, two power switching tubes connected in series. In some embodiments, the power switching tubes may be IGBTs, and the two power switching tubes form the upper bridge 804 and the lower bridge 805, respectively. The first end of the three-phase winding 701 is connected to the middle of the three-phase bridge arm 803. It should be noted that the middle of the three-phase bridge arm 803 refers to an electrical position between the two power switches. This electrical position is simultaneously connected to the upper bridge 804 and the lower bridge 805, for example, connected to the upper bridge 804 along one path direction and connected to the lower bridge 805 along the other path direction. This electrical position is also the connection point between the upper bridge 804 and the lower bridge 805, and is not the midpoint of the three-phase bridge arm 803.

[0119] In some embodiments, the battery pack 600 includes a first sub-battery pack and a second sub-battery pack (U1 / U2) connected in series, respectively denoted as first sub-battery pack U1 and second sub-battery pack U2. For example, the battery pack 600 includes a housing, and the first sub-battery pack U1 and the second sub-battery pack U2 are disposed within the housing. The negative electrode of the first sub-battery pack U1 is connected to the positive electrode of the second sub-battery pack U2. The positive electrode of the first sub-battery pack U1 forms the positive electrode of the battery pack 600, i.e., the DC positive electrode of the first and second sub-battery packs (first sub-battery pack U1 and second sub-battery pack U2) connected in series. The negative electrode of the second sub-battery pack U2 forms the negative electrode of the battery pack 600, i.e., the DC negative electrode of the first and second sub-battery packs (first sub-battery pack U1 and second sub-battery pack U2) connected in series.

[0120] The A-wire 801 is connected between the second end of at least one phase winding 701 and the middle of the first sub-battery pack U1 and the second sub-battery pack U2, that is, the second end of at least one phase winding 701 and the middle of the first sub-battery pack U1 and the second sub-battery pack U2 are connected through the A-wire 801. In the present application, the A-wire is a kind of conductive wire, which can be any one or more combinations of round wire, flat wire, cable, copper bus, etc. Similarly, the middle of the first sub-battery pack U1 and the second sub-battery pack U2 refers to an electrical position between the first sub-battery pack U1 and the second sub-battery pack U2, which simultaneously connects the first sub-battery pack U1 and the second sub-battery pack U2, for example, connecting the first sub-battery pack U1 (for example, the negative pole of U1) along one path direction and connecting the second sub-battery pack U2 (for example, the positive pole of U2) along another path direction.

[0121] In some embodiments, line A 801 is connected between the second end of the three-phase winding 701 and the middle of the first sub-battery pack U1 and the second sub-battery pack U2, that is, the second end of the three-phase winding 701 is connected to the middle of the first sub-battery pack U1 and the second sub-battery pack U2 connected in series through line A 801.

[0122] As shown in Figure 2, the battery pack 600 includes a first sub-battery pack U1 and a second sub-battery pack U2. During the positive half-cycle of the fundamental wave cycle, when the upper bridge 804 is on and the lower bridge 805 is off, the first sub-battery pack U1 discharges, charging the three-phase winding 701 through the upper bridge 804. When the lower bridge 805 is on and the upper bridge 804 is off, the three-phase winding 701 charges the second sub-battery pack U2, completing a circuit through the lower bridge 805. During the negative half-cycle of the fundamental wave cycle, when the lower bridge 805 is on and the upper bridge 804 is off, the second sub-battery pack U2 discharges into the three-phase winding 701, completing a circuit through the lower bridge 804. When the upper bridge 804 is on and the lower bridge 805 is off, the three-phase winding 701 continues to flow, charging the first sub-battery pack U1 through the upper bridge 804. The mutual charging and discharging of the first and second sub-battery packs generates heat in the battery's internal resistance, achieving battery self-heating. Therefore, in this application, the A line 801 is also called a heating A line, which extends from the second end of the winding 701 of the motor 600 to the middle of the first sub-battery pack U1 and the second sub-battery pack U2 of the battery pack 600.

[0123] In some embodiments, the controller 800 further includes a first capacitor 173 . The first capacitor 173 can be understood as a bus capacitor, with the positive electrode of the first capacitor 173 connected to the positive DC bus 807 and the negative electrode of the first capacitor 173 connected to the negative DC bus 808 .

[0124] In some embodiments, the positive DC bus 807 and the negative DC bus 808 are connected to a first filter. For example, the first filter may be a magnetic ring 93, referred to as the first magnetic ring 93. To facilitate the installation of the positive DC bus 807 and the negative DC bus 808, the positive DC bus 807 and the negative DC bus 808 may be passed through the first magnetic ring 93.

[0125] Referring to Figure 2, in some embodiments, the filter includes a first Y capacitor 807B, a second Y capacitor 808B, and a third Y capacitor 801B. One end of the first Y capacitor 807B is connected to the positive DC bus 807, and the other end of the first Y capacitor 807B is grounded; one end of the second Y capacitor 808B is connected to the negative DC bus 808, and the other end of the second Y capacitor 808B is grounded; one end of the third Y capacitor 801B is connected to the A line 801, and the other end of the third Y capacitor 801B is grounded. These three Y capacitors can be set in the housing 10 of the controller 800, or in the housing of the battery pack 600, or in both locations.

[0126] Referring to Figure 2 , when charging the battery pack 600, the charging device is connected to the controller 800, and the battery pack 600 is charged through the controller 800. When the charging voltage of the charging device is low (e.g., less than 750V, such as 470V), after the charging current enters the controller 800, in some embodiments, the negative charging current flows through the negative electrode of the second connecting assembly 4 and the negative DC bus 808 to the negative electrode of the battery pack 600; the positive charging current flows through the first switching element 122 (e.g., the first contactor), the second A-line conductive element 136, the motor winding 701, the upper bridge 804 of the power module 83, and the positive DC bus 807 to the positive electrode of the battery pack 600. This charging method can increase the charging voltage and improve charging efficiency.

[0127] It can be seen that the windings inside the motor 700 and part of the A line 801 are reused during boost charging. In order to absorb the ripple current and filtering at the DC end, in some embodiments, during the boost charging process, in order to better optimize the EMC of the power module, a second capacitor 174 is provided, and the negative pole of the second capacitor 174 and the negative pole of the first capacitor 173 are both connected to the negative pole of the charging device. While the positive pole of the charging device is connected to the second A line conductive member 136, it is also connected to the positive pole of the second capacitor 174, so that the positive and negative poles of the DC charging are connected and conductive to the second capacitor 174. In this way, the battery pack is charged by the motor boost method to improve the charging efficiency.

[0128] In some embodiments, the positive charging wire and the negative charging wire are connected to a second filter. For example, the second filter can be a magnetic ring 117, which is denoted as a third magnetic ring 117. To facilitate the installation of the positive charging wire and the negative charging wire, the positive charging wire and the negative charging wire are passed through the third magnetic ring 117.

[0129] In some embodiments, in order to better optimize the EMC of the controller 800, the controller 800 also includes a third filter, and the positive charging wire and the negative charging wire are commonly connected to the third filter. For example, the third filter can be a pair of Y capacitors 116, and the pair of Y capacitors 116 can better filter out common-mode interference.

[0130] When the charging voltage of the charging device is high (e.g., 750V), after the charging current enters the controller 800, the negative charging current still flows to the battery pack through the same path. The positive charging current flows through the second switching element 124 (e.g., the second contactor) to the first connecting assembly 9. In other words, boost charging is not required.

[0131] Therefore, the controller 800 monitors the charging voltage of the charging device and selects to open either the first switching element 122 or the second switching element 124, allowing the positive charging current to reach the battery pack 600 through different paths. When the first switching element 122 is on and the second switching element 124 is off, the positive charging current flows through the motor winding 701, raising the charging voltage. When the first switching element 122 is off and the second switching element 124 is on, the positive charging current flows directly to the positive DC bus 807 of the battery pack 600 and no longer flows through the motor winding 701, maintaining the charging voltage at its original value.

[0132] The positive DC bus 807 and the negative DC bus 808 are also collectively referred to as DC buses.

[0133] In some embodiments, when the battery pack 600 supplies power to the motor 700, the DC current from the battery pack 600 passes through the DC bus, the first connecting component 9 and the first magnetic ring 93 in sequence, flows into the first capacitor 173, and is then converted into AC power by the power module 83 and flows to the motor 700 through the AC Hall 100 to drive the motor 700.

[0134] In some embodiments, the negative current passes through the third fuse 133 before entering the first capacitor 173. To protect the boost charging and self-heating circuits, the positive current flows through the first fuse 134 when flowing from the first capacitor 173 to the DC bus.

[0135] In some embodiments, to facilitate vehicle charging, the controller 800 further includes a power module 884, which is connected to an external AC power source (e.g., AC 220V) via the AC charging and discharging connector 3. To ensure safety, a second fuse 135 is provided between the power module 884 and the first capacitor 173.

[0136] In the present application, two electrical locations being “at least indirectly connected” means that the two are directly connected via a wire (direct equipotential connection) or indirectly connected via electronic components (equipotential connection).

[0137] The specific molded products will be described in detail below in different embodiments.

[0138] As shown in Figures 3 to 5, in some embodiments, the A line 801 does not pass through the controller 800, but is connected to the second end of at least one phase winding 701 of the motor 700 from the middle of the first sub-battery pack U1 and the second sub-battery pack U2. For example, one end of the A line 801 passes through the housing of the motor 700 and is connected to the battery pack 600, so that the A line 801 is equivalent to being provided outside the housing 10 of the controller 800. In this embodiment, the design of the A line 801 is relatively simple. However, the portion of the A line between the housing of the motor 700 and the shell of the battery pack 600 needs to be covered, and this portion of the A line is relatively long, and multiple fixings need to be separately provided to fix it. In addition, the high-frequency interference of the power module 83 will be transmitted to the A line 801 through the motor 700, thereby causing EMC problems for the entire drive system 890.

[0139] In some embodiments, for example, when it is necessary to reuse the three-phase winding 701 of the motor 700 and the power module 83 of the controller 800 to realize the boost charging function, when the A line 801 does not pass through the controller 800, it is also necessary to set a second A line in the controller 800 to connect the second end of at least one phase winding 701 of the motor 700 and the charging positive conductor. For example, the second A line can be a second A line conductive member 136.

[0140] To address EMC issues for the entire drive system 890, in some embodiments, a portion of line A 801 is disposed within a fourth filter. For example, the fourth filter can be a magnetic ring, referred to as a fourth magnetic ring. The fourth magnetic ring is located in a position that facilitates the passage of line A 801. The fourth magnetic ring provides filtering, reducing EMC issues associated with line A 801. In some embodiments, a portion of line A 801 passes solely through the fourth magnetic ring.

[0141] To address the issue of requiring sheathing for the portion of line A between the motor 700 housing and the battery pack 600 housing, in some embodiments, line A 801 is partially located within the controller 800 housing 10. This ensures that only the portion of line A between the battery pack 600 housing and the controller 800 housing 10 requires sheathing, while the remainder does not. These embodiments also address the issue of requiring multiple separate fasteners to secure the longer portion of line A between the motor 700 housing and the battery pack 600 housing.

[0142] In some embodiments, A-line 801 is implemented by a plurality of interconnected, tangible conductive members (e.g., wires, copper busbars, etc.). In the present application, as shown in FIG3 , A-line 801 located within housing 10 of controller 800 is embodied as an A-line conductive assembly 860 , which may include, for example, a first A-line conductive member 176 and a second A-line conductive member 136 ; and may further include, for example, a third A-line conductive member 123 , and may further include, for example, a fourth A-line conductive member 131 .

[0143] In some embodiments, the A line 801 may have multiple connection modes or include multiple segments. In this application, a segment of the A line 801 is referred to as a first A line. For example, in some embodiments, the first A line 801A can be a section from the middle of the first sub-battery pack U1 and the second sub-battery pack U2 connected in series to the controller 800 (see Figure 2, its second end is connected to the middle of the first sub-battery pack and the second sub-battery pack connected in series, and its first end is connected to the controller 800, for example, connected to the plug interface of the box 10 of the controller 800); or, the first A line 801C can be an A line inside the battery pack 600, also called a battery pack A line (see Figure 2, its first end is connected to the shell of the battery pack 600, and the second end is connected to the middle of the first sub-battery pack U1 and the second sub-battery pack U2, the first A line 801C can be understood as a part of the first A line 801A); or the first A line can be a section from the battery pack 600 to the controller 800 (see Figure 3, its first end is connected to the plug interface on the box of the controller 800, and its second end is connected to the plug interface on the shell of the battery pack 600, for example, it is set in the first connecting component 9, and the first A line 814 can be understood as a part of the first A line 801A).

[0144] During the heating process of the battery pack 600, the A wire 801 alternates with the positive DC bus 807 and the negative DC bus 808 to form a loop. Therefore, in some embodiments, at least a portion of the A wire 801 is located between the positive DC bus 807 and the negative DC bus 808, thereby facilitating wiring harness configuration. For example, at least a portion of the first A wire 801A is located between the positive DC bus 807 and the negative DC bus 808.

[0145] In some embodiments, the inductance of the first A line, the positive DC bus and the negative DC bus are the same. The inductance of these three wires is the same, which can ensure the voltage balance between the A line and the positive pole of the battery pack, and between the A line and the negative pole of the battery pack, thereby improving safety performance. In some embodiments, part of the positive DC bus 807, part of the negative DC bus 808 and part of the A line 801 are jointly provided in the first filter. In some embodiments, the first filter is the first magnetic ring 93, and part of the positive DC bus 807, part of the negative DC bus 808 and part of the A line 801 are jointly provided in the first magnetic ring 93 (jointly provided in at least one magnetic ring), which can suppress common mode interference and has a good suppressive effect on high-frequency noise. In some embodiments, part of the first A line and part of the DC bus are jointly provided in the first magnetic ring 93.

[0146] In some embodiments, the first magnetic ring 93 is provided in at least one of the controller 800 and the battery pack 600. For example, the first magnetic ring 93 can be provided in the housing 10 of the controller 800, or the first magnetic ring 93 can be provided in the shell of the battery pack 600. In some embodiments, a fifth magnetic ring (not shown) can be further provided in the shell of the battery pack 600 to optimize the EMC of the battery pack. When the first A line and the DC bus need to pass through the housing 10 of the controller 800, the first magnetic ring 93 is provided in the housing 10. When the first A line and the DC bus need to pass through the shell of the battery pack 600, in some embodiments, the first magnetic ring 93 is provided in the shell.

[0147] In some embodiments, only the positive DC bus terminal and the negative DC bus terminal are arranged on one side of the battery pack 600, while the A line terminal is not arranged on the same side as the positive DC bus terminal and the negative DC bus terminal, which results in the need for a separate socket to be configured for the A line terminal, resulting in increased costs.

[0148] In some embodiments, among the battery pack positive DC bus terminal, the battery pack negative DC bus terminal and the battery pack A line terminal on the battery pack 600, the battery pack A line terminal is not arranged between the battery pack positive DC bus terminal and the battery pack negative DC bus terminal. This results in a large difference between part of the A line in the battery pack 600 and part of the positive DC bus and part of the negative DC bus in the battery pack 600, which in turn results in a large common-mode current between part of the A line, part of the positive DC bus and part of the negative DC bus in the battery pack 600, which in turn causes a voltage imbalance between the A line and the positive pole of the battery pack, and between the A line and the negative pole of the battery pack, thereby posing a safety hazard to the entire drive system.

[0149] In some embodiments, as shown in FIG19 , the battery pack 600 includes a battery pack connector 609. To address the cost increase associated with a separate connector for the A-line terminal on one side of the battery pack 600, the battery pack connector 609 includes a battery pack A-line terminal 611, a battery pack positive DC bus terminal 612, and a battery pack negative DC bus terminal 613. One end of the battery pack A-line terminal 611 is connected to the center of the first sub-battery pack U1 and the second sub-battery pack U2 via a battery pack A-line copper busbar 601, and the other end is connected to the second end of at least one phase winding of the motor 700. The battery pack positive DC bus terminal 612 is connected to the positive terminal of the battery pack 600 via a battery pack positive copper busbar 602. The battery pack negative DC bus terminal 613 is connected to the negative terminal of the battery pack 600 via a battery pack negative copper busbar 603. The battery pack A line terminal 611 is provided between the battery pack positive DC bus terminal 612 and the battery pack negative DC bus terminal 613 .

[0150] As shown in Figures 3 to 5, in some embodiments, the first connection assembly 9's A-line terminal (denoted as second A-line terminal 812), the positive DC bus terminal (denoted as second positive DC bus terminal 822), and the negative DC bus terminal (denoted as second negative DC bus terminal 832) for connecting to one side of the battery pack 600 are collectively housed within the same second plug connector 9B. In other words, the second plug connector 9B is used to connect to the battery pack 600. For example, as shown in Figure 19, the second plug connector 9B is used to connect to the battery pack receptacle 609. In other words, the battery pack receptacle 609 is used to receive the second plug connector 9B. It is understood that the second A-line terminal 812 is used to connect to the battery pack A-line terminal 611, the second positive DC bus terminal 822 is used to connect to the battery pack's positive DC bus terminal 612, and the second negative DC bus terminal 832 is used to connect to the battery pack's negative DC bus terminal 613.

[0151] As shown in Figures 3 to 5, in order to solve the problem of voltage imbalance between line A and the positive pole of the battery pack, and between line A and the negative pole of the battery pack, in some embodiments, the second line A terminal 812 is arranged between the second positive DC bus terminal 822 and the second negative DC bus terminal 832; in some embodiments, in the direction perpendicular to the extension of the second line A terminal 812, the second positive DC bus terminal 822 and the second negative DC bus terminal 832, the second line A terminal 812, the second positive DC bus terminal 822 and the second negative DC bus terminal 832 at least partially overlap.

[0152] As shown in Figures 3 to 5, in some embodiments, the housing 10 of the controller 800 is provided with a first plug interface 810. The first plug interface 810 is used for one end of the first connecting assembly 9. The other end of the first connecting assembly 9 is suitable for connecting to the battery pack 600, thereby connecting the controller 800 to the battery pack 600. Because the A line 801 extends from the motor 700 through the controller 800 to the middle of the first and second sub-battery packs connected in series in the battery pack 600, in some embodiments, the first connecting assembly 9 preferably includes an A line conductor segment 813 corresponding to the first A line 814, a positive DC bus conductor segment 823 corresponding to the positive DC bus 807, and a negative DC bus conductor segment 833 corresponding to the negative DC bus 808.

[0153] In some embodiments, the first end of line A conductor segment 813 is at least indirectly connected to the controller 800, and the second end of line A conductor segment 813 is at least indirectly connected to the center of the first and second sub-battery packs U1 and U2 connected in series. The first end of the positive DC bus conductor segment 823 is at least indirectly connected to the controller 800, and the second end of the positive DC bus conductor segment 823 is at least indirectly connected to the positive electrode of the battery pack 600 (positive DC bus 807). The first end of the negative DC bus conductor segment 833 is at least indirectly connected to the controller 800, and the second end of the negative DC bus conductor segment 833 is at least indirectly connected to the negative electrode of the battery pack 600 (negative DC bus 808).

[0154] In some embodiments, the first end of the A-line conductor segment 813 is connected to the first A-line terminal 811. The first A-line terminal 811 is connected to the controller 800. That is, the two ends of the first A-line terminal 811 are respectively connected to the controller 800 and the first end of the A-line conductor segment 813. In some embodiments, the controller 800 is provided with an A-line support position 59 for being detachably connected to the first end of the A-line conductor segment 813 at least indirectly. The first plug interface 810 is used to allow the first end of the A-line conductor segment 813 to be directly or indirectly inserted. In some embodiments, after the first A-line terminal 811 is inserted into the first plug interface 810, it is directly and detachably installed on the A-line support position 59. Thus, the first plug interface 810 is used to allow the A-line conductor segment 813 to be inserted through the first A-line terminal 811, and the first A-line terminal 811 is detachably connected to the A-line support position 59. The second end of line A conductor segment 813 is connected to second line A terminal 812 (battery pack line A terminal), and is connected to the center of the first sub-battery pack U1 and the second sub-battery pack U2 connected in series through second line A terminal 812. It can be understood that first line A terminal 811, line A conductor segment 813, and second line A terminal 812 constitute a segment of line A 801, that is, a first line A 814. In controller 800, all electrical parts that are equipotentially connected to line A support 59 are electrical parts on line A 801.

[0155] In some embodiments, the first end of the positive DC bus conductor segment 823 is connected to the first positive DC bus terminal 821. The first positive DC bus terminal 821 is connected to the controller 800. That is, the two ends of the first positive DC bus terminal 821 are respectively connected to the controller 800 and the first end of the positive DC bus conductor segment 823. In some embodiments, the controller 800 is provided with a positive DC bus support position 58A for at least indirectly and detachably connecting to the first end of the positive DC bus conductor segment 823. A positive DC bus terminal 58 is provided at the position of the positive DC bus support position 58A. After the first positive DC bus terminal 821 is inserted into the first plug port 810, it is directly and detachably connected to the positive DC bus terminal 58. The second end of the positive DC bus conductor segment 823 is connected to the second positive DC bus terminal 822 (the battery pack's positive DC bus terminal), and is at least indirectly connected to the positive electrode of the battery pack 600 through the second positive DC bus terminal 822. It will be appreciated that the first positive DC bus terminal 821, the positive DC bus conductor segment 823, and the second positive DC bus terminal 822 constitute at least a portion of the positive DC bus 807. The positive DC bus terminal 58 is the positive DC bus terminal of the controller 800 and is used to connect to the positive DC bus 807, i.e., the positive electrode of the battery pack 600.

[0156] In some embodiments, the first end of the negative DC bus conductor segment 833 is connected to the first negative DC bus terminal 831. The first negative DC bus terminal 831 is connected to the controller 800. That is, the two ends of the first negative DC bus terminal 831 are connected to the controller 800 and the first end of the negative DC bus conductor segment 833, respectively. For example, the controller 800 is provided with a negative DC bus support 60A for at least indirectly and removably connecting to the first end of the negative DC bus conductor segment 833. A negative DC bus terminal 60 is provided at the location of the negative DC bus support 60A. After being inserted into the first plug-in port 810, the first negative DC bus terminal 831 is directly and removably connected to the negative DC bus terminal 60. The second end of the negative DC bus conductor segment 833 is connected to the second negative DC bus terminal 832 (the negative DC bus terminal of the battery pack), and is at least indirectly connected to the negative electrode of the battery pack 600 through the second negative DC bus terminal 832. It is understood that the first negative DC bus terminal 831, the negative DC bus conductor segment 833, and the second negative DC bus terminal 832 constitute at least a portion of the negative DC bus 808. The negative DC bus terminal 60 is the negative DC bus terminal of the controller 800 and is used to connect to the negative DC bus 808, i.e., the negative terminal of the battery pack 600.

[0157] In some embodiments, the first A-line terminal 811, the first positive DC bus terminal 821 and the first negative DC bus terminal 831 are located at one end of the first connecting component 9 for connecting to the controller 800; the second A-line terminal 812, the second positive DC bus terminal 822 and the second negative DC bus terminal 832 are located at one end of the first connecting component 9 for connecting to the battery pack 600.

[0158] In some embodiments, the first A-line terminal 811 is located between the first positive DC bus terminal 821 and the first negative DC bus terminal 831. In some embodiments, the A-line conductor segment 813 is located between the positive DC bus conductor segment 823 and the negative DC bus conductor segment 833. In some embodiments, the first plug port 810 is disposed on a first socket 809, which is attached to the housing 10. The first magnetic ring 93 surrounds the first plug port 810.

[0159] In some embodiments, the end of the first connection assembly 9 for connecting to the controller 800 forms a first plug connector 9A, which is inserted into the plug interface 810 and the first magnetic ring 93. Therefore, the first A-line terminal 811, the first positive DC bus terminal 821, and the first negative DC bus terminal 831 all pass through the plug interface 810 and the first magnetic ring 93. In other words, the first A-line and the DC bus all pass through the plug interface 810 and the first magnetic ring 93, and the A-line 801 and the DC bus all pass through the first magnetic ring 93. In some embodiments, the first A-line terminal 811, the first positive DC bus terminal 821, and the first negative DC bus terminal 831 all pass through the plug interface 810 and the first magnetic ring 93 in parallel.

[0160] The first A-line terminal 811 can be understood as the A-line terminal of the plug connector 9A. The first positive DC bus terminal 821 can be understood as the positive DC bus terminal of the plug connector 9A. The first negative DC bus terminal 831 can be understood as the negative DC bus terminal of the plug connector 9A. The first positive DC bus terminal 821 can be understood as the end of the DC bus that is connected to the controller 800. Therefore, the first A-line and the end of the DC bus that is connected to the controller 800 are fixed within the plug connector 9A.

[0161] As will be appreciated, a socket can also be provided on one side of the battery pack 600 housing, with a socket provided on the socket. A second magnetic ring 94 (see FIG2 ) is disposed around the socket. The socket, formed by the second A-line terminal 812, the second positive DC bus terminal 822, and the second negative DC bus terminal 832, passes through the second magnetic ring 94, creating a similar situation as the socket 9A being inserted into the socket 810. That is, the second positive DC bus terminal 822, the second A-line terminal 812, and the second negative DC bus terminal 832 all pass through the second magnetic ring 94. The second A-line terminal 812 is located between the second positive DC bus terminal 822 and the second negative DC bus terminal 832. The second A-line terminal 812 is arranged parallel to and juxtaposed with the second positive DC bus terminal 822 and the second negative DC bus terminal 832.

[0162] The present application may also be configured such that the A-line conductor segment 813 , the positive DC bus conductor segment 823 , and the negative DC bus conductor segment 833 pass through a magnetic ring together.

[0163] In some embodiments, the lengths of line A conductor segment 813, the positive DC bus conductor segment 823, and the negative DC bus conductor segment 833 are substantially the same or identical. For example, line A conductor segment 813, the positive DC bus conductor segment 823, and the negative DC bus conductor segment 833 are the same length between the first plug connector 9A and the second plug connector 9B. In some embodiments, the wire diameters of line A conductor segment 813, the positive DC bus conductor segment 823, and the negative DC bus conductor segment 833 are substantially the same or identical. This configuration facilitates ensuring that the inductances of line A conductor segment 813, the positive DC bus conductor segment 823, and the negative DC bus conductor segment 833 are the same.

[0164] The A-line conductive component 860 is disposed in the box 10 , so that the controller 800 can be applied to both vehicles with a battery pack self-heating function and vehicles without a battery pack self-heating function.

[0165] In some embodiments, if the vehicle has a battery pack self-heating function, the A-wire 801 extends from the second end of the motor winding 701 to the middle of the first sub-battery pack U1 and the second sub-battery pack U2. Therefore, the A-wire conductive component's second end 862 is at least indirectly connected to the second end of at least one phase winding 701, and the A-wire conductive component's first end 861 is at least indirectly connected between the first and second sub-battery packs connected in series. That is, when the A-wire conductive component's second end 862 is at least indirectly connected to the second end of at least one phase winding 701, the A-wire conductive component's first end 861 is at least indirectly connected to the middle of the first and second sub-battery packs connected in series; alternatively, when the A-wire conductive component's first end 861 is at least indirectly connected between the first and second sub-battery packs connected in series, the A-wire conductive component's second end 862 is at least indirectly connected to the second end of at least one phase winding 701.

[0166] In some embodiments, if the vehicle does not have a self-heating battery pack, the ends of the A-wire conductive component 860 of the controller 800 are no longer connected to the battery pack 600 and the motor 700. That is, the second end 862 of the A-wire conductive component is not connected to the motor 700, and the first end 861 of the A-wire conductive component is not connected to the center of the first and second sub-battery packs connected in series. In other words, when the second end 862 of the A-wire conductive component is not connected to the motor 700, the first end 861 of the A-wire conductive component is also not connected to the battery pack 600. Alternatively, when the first end 861 of the A-wire conductive component is not connected to the battery pack 600, the second end 862 of the A-wire conductive component is also not connected to the motor 700.

[0167] The following continues to describe the controller 800 and an embodiment of how the controller 800 is connected to a charging device.

[0168] As previously described, the controller 800 is connected to a charging device via the second connection assembly 4. In some embodiments, as shown in Figures 3 and 6 , the housing 10 of the controller 800 is provided with a charging socket 115, and the plug of the second connection assembly 4 is inserted into the power socket 882 (charging interface) of the charging socket 115. The charging socket 115 includes a positive charging terminal 170 and a negative charging terminal 171.

[0169] As shown in Figure 6, in this application, the charging socket 115 is also referred to as the magnetic ring seat assembly 115. In some embodiments, the charging socket 115 includes an insulating substrate 881, a first capacitor mounting groove 169A and a first magnetic ring seat capacitor 116A. In some embodiments, the first capacitor mounting groove 169A is used to accommodate the first magnetic ring seat capacitor 116A. The first magnetic ring seat capacitor 116A preferably has a rectangular parallelepiped shape. It can be understood that the first magnetic ring seat capacitor 116A has at least three first capacitor side walls. The first capacitor mounting groove 169A has at least three first groove side walls 169C, and the three first groove side walls 169C and the three first capacitor side walls are non-detachably connected one by one. For example, the side walls of the first magnetic ring seat capacitor 116A are correspondingly bonded to the three first groove side walls 169C, and the first magnetic ring seat capacitor 116A is very securely installed on the magnetic ring seat assembly.

[0170] As shown in FIG. 6 , in some embodiments, the magnetic ring seat assembly 115 further includes a power socket 880 .

[0171] As shown in FIG. 6 , in some embodiments, the magnetic ring seat assembly 115 further includes a third magnetic ring 117 .

[0172] As shown in FIG6 , in some embodiments, the magnetic ring seat assembly 115 further includes a second magnetic ring seat capacitor 116B.

[0173] As shown in FIG6 , in some embodiments, the substrate 881 is provided with a positive terminal 170 for connecting to the positive electrode of the charging power source, a negative terminal 171 for connecting to the negative electrode of the charging power source, and a ground terminal for connecting to a ground line. The ground terminal includes a first ground terminal 168 and a second ground terminal 172 that are short-circuited to each other.

[0174] As shown in FIG6 , in some embodiments, a power socket 880 is attached to a base plate 881 for connecting to (or accommodating) an external power plug (i.e., a plug for a charging device). The power socket 880 includes a power jack 882 and a magnetic ring mounting groove 166 . The power jack 882 is configured to accommodate the external power plug. The power jack 882 extends through the power socket 880 along a first direction D1. The power socket 880 includes a first side 885 and a second side 886 disposed opposite each other along the first direction D1. The external power plug is configured to be inserted into the power socket 882 from the second side 886 . Specifically, the second side 886 is the outer side facing the external device, while the first side 885 is the inner side. In some embodiments, the magnetic ring mounting groove 166 is disposed within the power socket 880 and surrounds the power jack 882. In some embodiments, the outer surface of the magnetic ring mounting groove 166 is connected to the base plate 881. In some embodiments, the base plate 881 and the power socket 880 can be integrally formed, for example, by injection molding. In some embodiments, the base plate 881 is parallel to the axis of the power socket 882 (i.e., in the first direction D1). On the side of the magnetic ring base assembly 115 that faces the external power plug, the end surface of the power socket 882 is flush with the end surface of the base plate 881, or the end surface of the power socket 882 protrudes from the end surface of the base plate 881. In other words, the second side 886 of the socket is flush with the end surface of the base plate 881 along the first direction D1, or the second side 886 of the socket protrudes from the base plate 881 along the first direction D1.

[0175] As shown in FIG. 6 , in some embodiments, the third magnetic ring 117 is disposed in the magnetic ring installation groove 166 , for example, bonded in the magnetic ring installation groove 166 .

[0176] As shown in Figure 6, in some embodiments, the substrate 881 is also provided with a second capacitor mounting groove 169B. The second capacitor mounting groove 169B is used to accommodate the second magnetic ring base capacitor 116B. The second magnetic ring base capacitor 116B preferably has the shape of a rectangular parallelepiped. It can be understood that the second magnetic ring base capacitor 116B has at least three second capacitor side walls. The second capacitor mounting groove 169B has at least three second groove side walls 169D, and the three second groove side walls 169C and the three second capacitor side walls are non-detachably connected one by one. For example, the side walls of the second magnetic ring base capacitor 116B are bonded to the three second groove side walls 169D. In some embodiments, the first capacitor mounting groove 169A and the second capacitor mounting groove 169B are symmetrically arranged about the axis of the power socket 880, so that the first magnetic ring base capacitor 116A and the second magnetic ring base capacitor 116B are symmetrically arranged about the axis of the power socket 882.

[0177] As shown in FIG6 , in some embodiments, the first magnetic ring base capacitor 116A can also be non-detachably connected to the substrate 881, for example, bonded to the substrate 881. The first capacitor pin of the first magnetic ring base capacitor 116A is electrically connected to the positive terminal 170, and the second capacitor pin is electrically connected to a ground terminal, for example, the first ground terminal 168. The second magnetic ring base capacitor 116B can also be non-detachably connected to the substrate 881, for example, bonded to the substrate 881. The first capacitor pin of the second magnetic ring base capacitor 116B is electrically connected to the negative terminal 171, and the second capacitor pin is electrically connected to a ground terminal, for example, the second ground terminal 172. The first magnetic ring base capacitor 116A and the second magnetic ring base capacitor 116B can be configured as Y capacitors. In some embodiments, the length direction of the first magnetic ring base capacitor 116A is parallel to the axial direction of the power socket 882 (i.e., the first direction D1), and / or the length direction of the second magnetic ring base capacitor 116B is parallel to the axial direction of the power socket 882.

[0178] As shown in FIG6 , in some embodiments, the bottom wall of the magnetic ring mounting groove 166 is disposed on the first side 885 of the socket, that is, the magnetic ring mounting groove 166 is not a through groove extending along the first direction D1, and has a blind end on the first side 885 of the socket. In some embodiments, the first magnetic ring base capacitor 116A and the second magnetic ring base capacitor 116B are both disposed adjacent to the first side 885 of the socket. In some embodiments, the side wall of the first magnetic ring base capacitor 116A abuts the first side 885 of the socket, and the side wall of the second magnetic ring base capacitor 116B also abuts the first side 885 of the socket, thereby limiting the periphery of the first magnetic ring base capacitor 116A and the second magnetic ring base capacitor 116B, so that the first magnetic ring base capacitor 116A and the second magnetic ring base capacitor 116B are securely mounted.

[0179] As shown in FIG6 , in some embodiments, the positive terminal 170 and the negative terminal 171 are also symmetrically arranged about the axis of the power socket 882, and the first ground terminal 168 and the second ground terminal 172 are also symmetrically arranged about the axis of the power socket 882, so that the magnetic ring base assembly 115 has a symmetrical structure as a whole. For example, the positive terminal 170 and the first ground terminal 168 are respectively located on either side of the first capacitor mounting slot 169A (i.e., the first magnetic ring base capacitor 116A), and the negative terminal 171 and the second ground terminal 172 are respectively located on either side of the second capacitor mounting slot 169B (i.e., the second magnetic ring base capacitor 116B).

[0180] As shown in Figure 6, in some embodiments, the magnetic ring seat assembly 115 also includes a partition wall 883. The partition wall 883 is provided on the substrate 881 and protrudes from the substrate 881. The partition wall 883 and the power socket 880 are located on the same side of the substrate 881. The partition wall 883 extends along the axis of the power socket 882 and is used to separate the positive and negative poles of the external power plug. The positive terminal 170 and the negative terminal 171 are respectively located on both sides of the partition wall 883. The partition wall 883 is equivalent to being provided at the position of the symmetry axis of the magnetic ring seat assembly 115. It can be understood that the partition wall 883 is made of insulating material. In some embodiments, the partition wall 883 is integrally formed with the substrate 881. In some embodiments, the partition wall 883, the substrate 881 and the socket 880 are integrally formed.

[0181] As shown in FIG6 , in some embodiments, the magnetic ring seat assembly 115 further includes at least one wire harness clamping portion 167 . The wire harness clamping portion 167 is disposed on the outer surface of the magnetic ring mounting groove 166 for clamping the wire harness.

[0182] Since the capacitor 116A, the capacitor 116B and the magnetic ring 117 are all bonded and installed, the magnetic ring seat assembly 115 becomes an integrated charging socket, which is conducive to automated production.

[0183] The magnetic ring base assembly 115 is used to be mounted to the housing 10. For example, the base plate 881 is connected to the housing 10, thereby exposing the power socket 882 from the housing 10, allowing the second connection assembly 4 to be inserted into the power socket 882, thereby connecting the controller 100 to the charging device. In some embodiments, when the drive system 890 is installed in a vehicle, the axis of the power socket 882 is parallel to the axis of the wheel, so that the plug of the charging device can be inserted from the side wall of the vehicle (the side of the door).

[0184] In some embodiments, the first socket 809 and the magnetic ring seat assembly 115 are arranged on the same side wall of the box 10 , that is, the first connecting assembly 9 and the second connecting assembly 4 are connected to the same side of the box 10 .

[0185] The following will continue to introduce some embodiments of the controller 800 and its connection with the motor 700.

[0186] As shown in FIG3 , the controller 800 is provided with a first terminal block 99 . As shown in FIG7 , the motor 700 is provided with a motor terminal block 146 . The first terminal block 99 is used to connect to the motor terminal block 146 , thereby realizing the connection between the controller 800 and the motor 700 .

[0187] In some embodiments, the connection between the controller 800 and the motor 700 includes the connection of the A line 801 and the first end of the three-phase winding 701 , that is, the controller 800 is connected to the first end and the second end of the three-phase winding 701 respectively.

[0188] In some embodiments, as shown in FIG7 , the motor terminal block 146 includes a motor A-line terminal 144, an electric control A-line terminal 148, a motor three-phase line terminal 145, and an electric control three-phase line terminal 147. Inside the motor 700, the second ends of the three-phase winding 701 are first brought together within the motor 700 and then connected to the motor A-line terminal 142. The motor A-line terminal 142 is connected to the motor A-line terminal 144 of the motor terminal block 146. Inside the motor terminal block 146, the motor A-line terminal 144 is connected to the electric control A-line terminal 148. The first end of the three-phase winding 701 is connected to the motor three-phase line terminal 143, which is connected to the motor three-phase line terminal 145 of the motor terminal block 146. The motor three-phase line terminal 145 of the motor terminal block 146 is connected to the electric control three-phase line terminal 147 of the motor terminal block 146.

[0189] As shown in Figure 3, the first terminal block 99 is provided with a first terminal block three-phase terminal 101. The electric control three-phase line terminal 147 is used to connect the first terminal block three-phase terminal 101. The electric control A line terminal 148 is connected to the second end 862 of the A line conductive component 860 of the controller 800 of the A line 801 (see Figure 3). The second end 862 of the A line conductive component is set to the first terminal block 99, so that the first terminal block 99 supports the second end 862 of the A line conductive component. At the same time, the first terminal block three-phase terminal 101 and the second end 862 of the A line conductive component are close to each other, which is convenient for connection with the corresponding terminal of the motor 700.

[0190] As shown in FIG8 , the housing 10 is provided with a second opening 32, which is located adjacent to the first terminal block 99 and is used to connect the first terminal block's three-phase terminal 101 and the second end 862 of the A-line conductive assembly to the motor 700. For example, the motor terminal block 146 can directly enter the interior of the housing 10 through the second opening 32 and connect to the terminals at the first terminal block 99.

[0191] The second opening 32 allows the second end 862 of the A-wire conductive component to pass directly or indirectly through the second opening 32 and then connect to the motor 700. In this application, "indirect passage of the second end 862 of the A-wire conductive component through the second opening 32" means that the current flowing through the second end 862 of the A-wire conductive component passes through the second opening 32. The second end 862 of the A-wire conductive component is disposed adjacent to the second opening 32, or the second end 32 of the A-wire conductive component is disposed at the second opening 32.

[0192] In some embodiments, the first terminal block three-phase terminal 101 and the second end 862 of the A-line conductive component are arranged side by side (see Figure 4), and the electric control three-phase line terminal 147 and the electric control A-line terminal 148 are arranged side by side.

[0193] The following continues to introduce some embodiments of the controller 800, especially the relationship between the controller 800 and the A line 801.

[0194] As shown in FIG3 , the controller 800 includes a power module 83 and an A-line conductive component 860 . The power module 83 and the A-line conductive component 860 are disposed in the housing 10 . The A-line conductive component 860 is also part of the A-line 801 in the controller 800 .

[0195] As shown in Figures 3 and 9, the A-wire conductive component 860 includes a first end 861 and a second end 862. The first end 861 is used to connect at least indirectly to the center of the first sub-battery pack U1 and the second sub-battery pack U2 connected in series within the battery pack 600. The second end 862 is used to connect at least indirectly to the second end of at least one phase winding 701 of the motor 700. In some embodiments, the second end 862 is used to connect at least indirectly to the second end of the three-phase winding 701 of the motor 700.

[0196] It is understood that the first plug interface 810 is used for the first end 861 of the A-line conductive component to pass directly or indirectly through to connect to the battery pack 600. In this application, the first end 861 of the A-line conductive component indirectly passes through the first plug interface 810, which means that the current flowing through the first end 861 of the A-line conductive component will pass through the first plug interface 810.

[0197] In some embodiments, the A-line conductive assembly includes a first A-line conductive member 176 and a second A-line conductive member 136. The first A-line conductive member 176 has a first A-line conductive member first end 176A and a first A-line conductive member second end 176B. The first A-line conductive member first end 176A serves as the A-line conductive assembly first end 861. The second A-line conductive member 136 has a second A-line conductive member first end 136A and a second A-line conductive member second end 136B. The second A-line conductive member first end 136A is connected to the first A-line conductive member second end 176B. The second A-line conductive member second end 136B serves as the A-line conductive assembly second end 862. In some embodiments, the first A-line conductive member second end 176B and the second A-line conductive member first end 136A are connected via a fixing base 132. The fixing base 132 is generally an insulating member and is used to support the first A-line conductive member 176 and the second A-line conductive member 136, thereby reducing their shaking within the controller housing 10 and improving the reliability of the controller 800.

[0198] Specifically, as shown in FIG3 , and as previously described, the controller 800 is provided with an A-line support 59 , which is used to connect, at least indirectly via a connector, to the center of the first and second sub-battery packs U1 and U2 connected in series within the battery pack 600. For example, the first end 176A of the first A-line conductive member is fixedly mounted to the A-line support 59 . Specifically, the first end 861 of the A-line conductive component is fixed to the A-line support 59 and connected to the first A-line terminal 811 , thereby connecting to the center of the first and second sub-battery packs U1 and U2 via the A-line of the first connector 9 .

[0199] As shown in FIG2 , the controller 800 is connected to the first end of the three-phase winding 701 of the motor 700 and also to the second end of the three-phase winding 701 (i.e., the end point of the A wire inside the motor). The second end 136B of the second A wire conductive member is connected to the first A wire terminal 802 of the first terminal block 99, thereby connecting to the second end of the winding 701.

[0200] Thus, the drive system 890 realizes the connection of the A line from the motor 700 through the controller 800 to the battery pack 600.

[0201] In some embodiments, the A-line conductive assembly 860 further includes a third A-line conductive assembly terminal 863, which is at least indirectly connected to the positive charging terminal 170. For example, the A-line conductive assembly 860 further includes a third A-line conductive member 123, which is used to connect the second A-line conductive member 136 to the positive charging conductor. In this embodiment, this is primarily used for boost charging. This design allows the second A-line conductive member 136 to be reused, reducing some copper busbars, making the controller 800 more integrated, and also saving costs.

[0202] In some embodiments, as shown in FIG9 , the third A-line conductive element 123 includes a third A-line conductive element first end 123A and a third A-line conductive element second end 123B. The first A-line conductive element 176 also includes a first A-line conductive element third end 176C. The first A-line conductive element third end 176C is preferably located adjacent to the first A-line conductive element second end 176B. The third A-line conductive element first end 123A is connected to the first A-line conductive element third end 176C. The third A-line conductive element second end 123B constitutes the A-line conductive assembly third end 863. In some embodiments, the A-line conductive assembly 860 also includes a fourth A-line conductive element 131. The fourth A-line conductive element 131 includes a fourth A-line conductive element first end 131A and a fourth A-line conductive element second end 131B. The fourth A-line conductive element 131 is connected at its two ends to the first A-line conductive element third end 176C and the third A-line conductive element first end 123A, respectively.

[0203] In other embodiments, as shown in FIG10 , the third A-line conductive member first end 123A is connected to the second A-line conductive member first end 136A. The fourth A-line conductive member 131 has two ends connected to the second A-line conductive member first end 136A and the third A-line conductive member first end 123A, respectively, so that the third A-line conductive member first end 123A is connected to the second A-line conductive member first end 136A.

[0204] In some embodiments, first switch element 122 is disposed within housing 10, with a second end of first switch element 122 connected to second end 123B of third A-line conductive component. A second end of first switch element 122 is connected to positive charging terminal 170. Therefore, third end 863 of A-line conductive component is connected to positive charging terminal 170 via first switch element 122.

[0205] In some embodiments, the first A-line conductive member 176, the second A-line conductive member 136, the third A-line conductive member 123, and the fourth A-line conductive member 131 are all constructed as copper busbars, and the four are connected to the same potential. It is understood that the fixing base 132 is also connected to the four at the same potential.

[0206] As shown in Figure 3, in some embodiments, the controller 800 also includes a capacitor assembly 55, the capacitor assembly 55 includes an insulating base 911, and an A-line support position 59 is provided on the insulating base 911. The A-line support position 59 is arranged adjacent to the first plug interface 810. In this way, a separate A-line support position can be omitted, making the controller 800 more integrated and saving costs.

[0207] In some embodiments, the first end 176A of the first A-line conductive member is detachably connected to the A-line support position 59. The span of the A-line conductive component 860 in the housing 10 is relatively large. In some embodiments, the A-line conductive component 860 is at least partially disposed in the capacitor housing 51 of the capacitor assembly 55 (see Figures 3 to 5). For example, the first A-line conductive component 176 is disposed above the capacitor housing 51. The capacitor housing 51 has insulating properties and is an insulating shell. In this way, the capacitor assembly 55 can support the A-line conductive component 860, reduce the insulating support members of the A-line conductive component 860, further improve the integration of the controller 800, and further save costs.

[0208] In some embodiments, the first A-wire conductive member 176 rests against the capacitor housing 51 of the capacitor assembly 55. Because the A-wire 801 can be used for both self-heating of the battery pack 600 and boost charging of the battery pack 600, the current flowing through the A-wire 801 during self-heating can reach up to 500A, generating significant heat. This means that a significant current will flow through the first A-wire conductive member 176, generating significant heat. Failure to dissipate this heat in a timely manner could significantly impact the capacitor assembly, potentially even causing the capacitor assembly 55 to explode.

[0209] To address the issue of lower reliability of the capacitor assembly 55 caused by the placement of the first A-line conductive member 176 on the capacitor assembly 55, a heat conductor 102 is also provided within the housing 10. The heat conductor 102 is positioned between the first A-line conductive member 176 and the inner wall of the housing 10 of the controller 800. The heat conductor 102 is configured, for example, as thermal paste. The housing 10 of the controller 800 is typically made of metal, which has excellent thermal conductivity. This allows the heat generated by the first A-line conductive member 176 to be more effectively transferred out of the housing 10.

[0210] In some embodiments, the controller 800 further includes an insulating member 91. The insulating member 91 is disposed between the heat conducting member 102 and the inner wall of the box 10 to insulate the first A-line conductive member 176 from the metal box 10.

[0211] In some embodiments, as shown in Figure 8, the upper surface of the insulating member 91 contacts the lower surface of the upper cover of the box body 10, the lower surface of the insulating member 91 contacts the upper surface of the thermal conductor 102, and the lower surface of the thermal conductor 102 contacts the A-line conductive component 860 (for example, the upper surface of the first A-line conductive member 176).

[0212] As shown in FIG3 , in some embodiments, the insulating member 91 and the thermally conductive member 102 have the same cross-sectional shape. For example, in a vertical projection, the insulating member 91 and the thermally conductive member 102 have the same shape and are substantially the same shape as the first A-line conductive member 176. The three are matched to achieve effective heat dissipation, effective insulation, and material savings.

[0213] The following describes the structure of the positive electrode circuit path during boost charging in the controller 800.

[0214] 2 and 3 , the positive charging lead is connected to the second end of winding 701 via first contactor 122. A second conductive component 806 is provided in controller 800. This second conductive component 806 includes first contactor 122. A first end of second conductive component 806 is disposed on charging receptacle 115 for connection to the positive terminal of a charging device, and a second end of second conductive component 806 is connected to the second end of at least one phase winding 701. In some embodiments, the second end of second conductive component 806 is connected to the second end of three-phase winding 701.

[0215] First, the working principle of the first contactor 122 will be described with reference to Figure 11. The first contactor 122 is provided with a first contactor contact 621 and a second contactor contact 622, as well as a movable plate 624 for connecting or disconnecting the first contactor 621 and the second contactor 622. Specifically, the contacts 621 and 622 are exposed on the surface of the contactor 122, and the contacts 621 and 622 extend into the interior of the contactor 122 via respective terminals 623A and 623B. The magnet 629 and the coil 628 are spaced apart along the direction of movement DM. The coil 628, the connecting shaft 626, and the movable plate 624 are fixedly connected together, and the three can move synchronously along the direction of movement DM. The limiting post 627 is a fixed component inside the contactor 122, and the spring 625 is connected between the limiting post 627 and the movable plate 624. When contactor 122 is powered on, coil 628 generates magnetism and is attracted to magnet 629. Coil 628 then drives movable plate 624 along movement direction DM toward magnet 629 via connecting shaft 626, causing movable plate 624 to contact terminals 623A and 623B, thereby connecting contacts 621 and 622. At this point, spring 625 is stretched. When power is removed, the restoring force of spring 625 pulls movable plate 624 away from terminals 623A and 623B, disconnecting contacts 621 and 622 and returning coil 628 to its original position.

[0216] In some embodiments of the present application, the movement direction DM of the movable plate 624 of the first contactor 122 is parallel to the axial direction of the wheel axle; alternatively, the movement direction of the movable plate 624 is perpendicular to the direction of travel of the vehicle. This has the advantage of preventing the contactor 122 from being mistakenly engaged due to inertia during rapid acceleration or deceleration or bumpy road conditions. Since the contactor 122 engages, current is conducted to the motor 700. If the contactor 122 is mistakenly engaged, the second connecting component 4 will become energized, thereby posing a risk of electric shock to the vehicle user.

[0217] In some embodiments, the second conductive assembly 806 includes a positive conductive assembly 850, a first contactor 122, and an additional positive conductive assembly 865. As shown in Figures 3 and 12, the positive conductive assembly 850 includes a positive conductive assembly first end 851 and a positive conductive assembly second end 852. The positive conductive assembly first end 851 is connected to the positive terminal of the charging device, and the positive conductive assembly second end 852 is connected to the contactor first contact 621. As shown in Figures 3 and 9, the additional positive conductive assembly 865 includes an additional positive conductive assembly first end 866 and an additional positive conductive assembly second end 867. The additional positive conductive assembly first end 866 is connected to the second end of at least one phase winding 701, and the additional positive conductive assembly second end 867 is connected to the contactor second contact 622.

[0218] In some embodiments, the positive conductive assembly 850 includes a positive charging terminal 170 and a sub-positive conductive assembly 853. The positive charging terminal 170 is located on the charging socket 115 and is used to connect to the positive electrode of the charging device, representing the positive conductive assembly first end 851. The sub-positive conductive assembly 853 includes a sub-positive conductive assembly first end 854 and a positive conductive assembly second end 855. The sub-positive conductive assembly first end 853 is connected to the positive charging terminal 170, and the sub-positive conductive assembly second end 855 is connected to the contactor first contact 621, representing the positive conductive assembly second end 852.

[0219] As shown in FIG12 , in some embodiments, the sub-positive conductive assembly 853 includes a first positive conductive member 125 and a second positive conductive member 127. The first positive conductive member 125 includes a first positive conductive member first end 125A and a first positive conductive member second end 125B. The first positive conductive member first end 125A is the sub-positive conductive assembly first end 853. The second positive conductive member 127 includes a second positive conductive member first end 127A and a second positive conductive member second end 127B. The second positive conductive member first end 127A is connected to the first positive conductive member second end 125A, and the second positive conductive member second end 127B is the sub-positive conductive assembly second end 855, that is, the positive conductive assembly second end 852.

[0220] Specifically, the first end 125A of the first positive conductive member is connected to the positive charging terminal 170 to introduce the positive charging current, and the second end 127B of the second positive conductive member is connected to the first contactor 122 .

[0221] As shown in Figures 3 and 9, the additional positive conductive component 865 includes an additional positive conductive component first end 866 and an additional positive conductive component second end 867. The additional positive conductive component first end 866 is connected to the second end of at least one phase winding 701, and the additional positive conductive component second end 867 is connected to the contactor second contact 622.

[0222] As previously mentioned, during the boost charging process, the positive current path reuses a portion of line A 801. In this application, the path between line A's second end 862 and third end 863 constitutes an additional positive conductive assembly 865 (or, in other words, the additional positive conductive assembly 865 constitutes the path between line A's second end 862 and third end 863). Line A's second end 862 serves as additional positive conductive assembly first end 866, and line A's third end 863 serves as additional positive conductive assembly second end 867. In other words, the third line A conductor 123, the fourth line A conductor 131, the first line A conductor second end 176C, the first line A conductor second end 176B, the mounting base 132, and the second line A conductor 136 constitute the additional positive conductive assembly 865. Alternatively, as shown in FIG. 10 , the third A-line conductive member 123 , the fourth A-line conductive member 131 , the fixing seat 132 and the second A-line conductive member 136 constitute an additional positive conductive assembly 865 .

[0223] It can be seen that the A-line conductive component third end 863 of the A-line conductive component 860 is connected to the charging positive terminal 170 through the first contactor 122 and the sub-positive conductive component 853.

[0224] 2 and 3 , the positive charging current is further diverted to the second capacitor 174 before passing through the first contactor 122. Therefore, the second positive conductive member 127 further includes a second positive conductive member third end 127C, which is connected to the second capacitor positive second input terminal 72 to be connected to the positive electrode of the second capacitor 174.

[0225] As shown in FIG3 , the controller 800 further includes a second switching element 124 and a third positive electrode conductive member 128 . According to the principle diagram 2 , when boost charging is not required, the first positive electrode conductive member 125 directs the charging positive electrode current to the second switching element 124 . Specifically, the first positive electrode conductive member 125 further includes a first positive electrode conductive member third end 125C, and the first end of the second switching element 124 is connected to the first positive electrode conductive member third end 125C. The third positive electrode conductive member 128 includes a third positive electrode conductive member first end 128A and a third positive electrode conductive member second end 128B. The third positive electrode conductive member first end 128A is connected to the second end of the second switching element 124, and the third positive electrode conductive member second end 128B is at least indirectly connected to the positive electrode of the battery pack 600 .

[0226] Specifically, the second end 128B of the third positive conductive member is connected to the positive connection terminal 71, and the positive connection terminal 71 is connected to the positive DC bus terminal 58 at the same potential (for example, terminals of the same copper bus), so that the second end 128B of the third positive conductive member is connected to the DC bus terminal 58, and then connected to the positive pole of the battery pack 600 through the first connecting component 9.

[0227] In some embodiments, in the controller 800 , the negative current routing for charging is configured as follows.

[0228] As shown in Figures 3 and 13, the controller 800 includes a negative conductive assembly 840. The negative conductive assembly 840 includes a negative conductive assembly first end 841 and a negative conductive assembly second end 842. The negative conductive assembly first end 841 is connected to the negative electrode of the charging device, and the negative conductive assembly second end 842 is at least indirectly connected to the negative electrode of the battery pack 600.

[0229] In some embodiments, the negative conductive assembly 840 includes a negative charging terminal 171 and a sub-negative conductive assembly 843. The negative charging terminal 171 is disposed on the charging socket 115 and is used to connect to the negative electrode of the charging device, representing the negative conductive assembly first end 841. The sub-negative conductive assembly 843 includes a sub-negative conductive assembly first end 844 and a sub-negative conductive assembly second end 845. The sub-negative conductive assembly first end 844 is used to connect to the negative charging terminal 171, and the sub-negative conductive assembly second end 845 represents the negative conductive assembly second end 842.

[0230] In some embodiments, the sub-negative conductive assembly 843 includes a first negative conductive member 126 and a second negative conductive member 92. The first negative conductive member 126 includes a first negative conductive member first end 126A and a first negative conductive member second end 126B. The first negative conductive member first end 126A serves as the sub-negative conductive assembly first end 844. The second negative conductive member 92 includes a second negative conductive member first end 92A and a second negative conductive member second end 92B. The second negative conductive member first end 92A is connected to the first negative conductive member second end 126B, and the second negative conductive member second end 92B serves as the sub-negative conductive assembly second end 845, i.e., the negative conductive assembly second end 842.

[0231] Specifically, the first end 126A of the first negative conductive member is connected to the negative charging terminal 171, introducing the negative charging current. The second end 92B of the second negative conductive member is connected to the negative DC bus terminal 60, and then connected to the negative electrode of the battery pack 600 through the first connecting assembly 9. The first end 92A of the second negative conductive member is connected to the second end 126B of the first negative conductive member via the negative connection terminal 70.

[0232] The following describes how the power module 83 is connected to the first capacitor 173 and the second capacitor 174 .

[0233] As shown in Figure 14, the power module 83 includes a three-phase terminal 84, a positive terminal 79, and a negative terminal 81. The three-phase terminal 84 is used to connect to the first ends of the three-phase winding 701. The positive terminal 79 is used to connect at least indirectly to the positive electrode of the battery pack 600 (positive DC bus 807). The negative terminal 81 is used to connect at least indirectly to the negative electrode of the battery pack 600 (negative DC bus 808).

[0234] The first terminal block 99 of the controller 800 is connected to the motor terminal block 146 of the motor 700, thereby connecting the three-phase bridge arm 803 of the power module 83 to the first end of the three-phase winding 701. The three-phase terminal 84 of the power module 83 is connected to the center of the three-phase bridge arm 803 within the power module. Inside the controller 800, the three-phase terminal 84 is connected to the first terminal block three-phase terminal 101 of the first terminal block 99 (see Figure 3), and then connected to the three-phase winding 701 through the three-phase electric control line terminal 147 and the three-phase motor line terminal 145 of the motor terminal block 146.

[0235] As shown in Figures 3, 5, and 14, in some embodiments, the controller 800 further includes a capacitor assembly 55. The first capacitor 173, the second capacitor 174, the first fuse 134, the second fuse 135, and the third fuse 133 are all disposed within the capacitor assembly 55. The positive DC bus support 58A, the positive DC bus terminal 58, the A-line support 59, the negative DC bus support 60A, and the negative DC bus terminal 60 are also disposed within the capacitor assembly 55. The positive and negative connection terminals 71 and 70 are also disposed within the capacitor assembly 55.

[0236] As shown in Figures 14 to 17, in some embodiments, capacitor assembly 55 includes an insulating base 911 and a first capacitor core 179, which is mounted on insulating base 911. First capacitor core 179 is the core of first capacitor 173. An A-line support 59 is provided on insulating base 911. As previously described, the A-line support is used to support at least first end 176A of the first A-line conductor segment. In some embodiments, A-line support 59 is also used to mount (connect) first A-line terminal 811 of first connection assembly 9.

[0237] In some embodiments, the capacitor assembly 55 further includes a second capacitor core 181 , which is mounted on the insulating base 911 , and the second capacitor core 181 is the core of the second capacitor 174 .

[0238] In some embodiments, the capacitor assembly 55 also includes the aforementioned positive DC bus support 58A and negative DC bus support 60A. The positive DC bus terminal 58 is located at the positive DC bus support 58A and is used to connect to the first positive DC bus terminal 821. The negative DC bus terminal 60 is located at the positive DC bus support 58A and is used to connect to the first negative DC bus terminal 831. In some embodiments, the positive DC bus support 58A, the A-line support 59, and the negative DC bus support 60A are arranged in parallel to facilitate connection with the first connection assembly 9. In some embodiments, the A-line support 59 is located between the positive DC bus support 58A and the negative DC bus support 59A. In some embodiments, the A-line support 59, the positive DC bus support 58A, and the negative DC bus support 60A are located near the first socket 809 (i.e., the first socket 810), which further facilitates the improvement of the integration of the controller 800.

[0239] In some embodiments, the capacitor assembly 55 further includes a first capacitor positive electrode conductive sheet 901 and a capacitor negative electrode conductive sheet 905 .

[0240] In some embodiments, the capacitor assembly 55 further includes a second capacitor positive conductive sheet 903, which is used to connect to the first capacitor positive conductive sheet 901 and includes a second capacitor positive conductive sheet body 904, as well as a positive DC bus terminal 58 and a positive connection terminal 71 extending from the second capacitor positive conductive sheet body 904. Therefore, the second capacitor positive conductive sheet 903 as a whole is at the same potential as the positive DC bus. As previously described, the positive connection terminal 71 is used to at least indirectly connect to the positive electrode of the charging device. The second capacitor positive conductive sheet body 904 is connected to the positive terminal of the second capacitor core 181.

[0241] In some embodiments, the first capacitor positive conductive plate 901 includes a first capacitor positive input terminal 67, a capacitor positive output terminal 77, and a first capacitor positive conductive plate body 902 located between the first capacitor positive input terminal 67 and the capacitor positive output terminal 77. The first capacitor positive conductive plate body 902 is connected to the positive terminal of the first capacitor core 179.

[0242] In some embodiments, the second capacitor positive conductive sheet 903 further includes a first fuse terminal 62 connected to the second capacitor positive conductive sheet body 904. A first terminal of a first fuse 134 is connected to the first fuse terminal 62, and a second terminal of the first fuse 134 is connected to the first capacitor positive input terminal 67. Thus, positive DC bus current is introduced from the second capacitor positive conductive sheet 903, passes through the first fuse 134, and enters the first capacitor 173. In some embodiments, the first fuse terminal 62 and the first capacitor positive input terminal 67 are located on the first side of the first capacitor core 179.

[0243] In some embodiments, the second capacitor positive conductive sheet 903 further includes a second fuse terminal 63 connected to the second capacitor positive conductive sheet body 904. The insulating base 911 is also provided with a second fuse output terminal 66. The first terminal of the second fuse 135 is connected to the second fuse terminal 63, and the second terminal of the second fuse 135 is connected to the second fuse output terminal 66. In some embodiments, the second fuse terminal 63 and the second fuse output terminal 66 are located on the first side of the first capacitor core 179. In some embodiments, the second fuse terminal 63 and the first fuse terminal 62 are located on the first side of the second capacitor positive conductive sheet body 904.

[0244] In some embodiments, the capacitor negative conductive plate 905 includes a capacitor negative input terminal 68, a capacitor negative output terminal 75, and a capacitor negative conductive plate body 906 located between the capacitor negative input terminal 68 and the capacitor negative output terminal 75. In some embodiments, the capacitor negative conductive plate body 906 connects the negative terminal of the first capacitor core 179 and the negative terminal of the second capacitor core 181, thereby allowing the first capacitor 173 and the second capacitor 174 to share a negative copper busbar. Specifically, the negative terminal of the second capacitor core 181 is connected to the negative terminal of the first capacitor core 179. In some embodiments, the first terminal of the third fuse 133 is connected to the negative DC bus terminal 60, and the second terminal of the third fuse 133 is connected to the capacitor negative input terminal 68. Consequently, the negative DC bus current flows through the third fuse 133 and enters the first capacitor 173 and the second capacitor 174. In some embodiments, the negative DC bus terminal 60 and the capacitor negative input terminal 68 are located on the same side of the first capacitor core 179.

[0245] In some embodiments, the capacitor assembly 55 further includes a second capacitor positive input terminal 72 connected to the positive terminal of the second capacitor core 181. As previously mentioned, the second capacitor positive input terminal 72 is also used to connect to the first end of the first switch element 122.

[0246] In some embodiments, the capacitor negative output terminal 75 and the capacitor positive output terminal 77 are used to connect to the power module 83. In some embodiments, the capacitor negative output terminal 75 and the capacitor positive output terminal 77 are located on the second side of the first capacitor core 179. In some embodiments, a capacitor insulator 76 is provided between the capacitor negative output terminal 75 and the capacitor positive output terminal 77. In some embodiments, the capacitor negative conductive sheet body 906 and the first capacitor positive conductive sheet body 902 are arranged substantially parallel to each other, for example, both are arranged parallel to the first plane. The capacitor negative output terminal 75 and the capacitor positive output terminal 77 are also arranged parallel to the first plane. The capacitor insulator 76 is located between the capacitor negative output terminal 75 and the capacitor positive output terminal 77 in a direction perpendicular to the first plane. In some embodiments, the capacitor insulator 76 is made of a plastic material. For example, the capacitor insulator 76 is constructed as a plastic sheet.

[0247] As shown in FIG14 , in some embodiments, the power module positive terminal 79 is used to connect to the capacitor positive output terminal 77, thereby connecting to the positive DC bus terminal 58, i.e., the positive DC bus, through the first capacitor positive conductive sheet 901 and the first fuse 134. Therefore, the positive DC bus terminal 58 is at least indirectly connected to the power module positive terminal 79. One end of the first capacitor positive conductive sheet 901 is connected to the power module positive terminal 79, and the other end of the first capacitor positive conductive sheet 901 is used to at least indirectly connect to the positive electrode of the battery pack 600. The power module negative terminal 81 is used to connect to the capacitor negative output terminal 75, thereby connecting to the negative DC bus terminal 60, i.e., the negative DC bus, through the capacitor negative conductive sheet 905 and the third fuse 133. Therefore, the negative DC bus terminal 60 is at least indirectly connected to the power module negative terminal 79. One end of the capacitor negative conductive sheet 905 is connected to the power module negative terminal 81, and the other end of the capacitor negative conductive sheet 905 is used to be at least indirectly connected to the negative terminal of the battery pack 600. In some embodiments, the power module positive terminal 79 and the power module negative terminal 81 are located on the same side of the power module 83.

[0248] In some embodiments, as shown in Figure 18, the power module positive terminal 79 and the capacitor positive output terminal 77 are overlapped and connected to each other along the overlap direction DD. The overlap direction DD is perpendicular to the direction of the contact surface between the power module positive terminal 79 and the capacitor positive output terminal 77 (that is, perpendicular to the aforementioned first plane). In some embodiments, the power module positive terminal 79 and the capacitor positive output terminal 77 are overlapped and welded to each other. The power module positive terminal 79 includes three sub-power module positive terminals 79A respectively connected to the first end (upper bridge 804) of the three-phase bridge arm 803, and the capacitor positive output terminal 77 is overlapped and connected to the three sub-power module positive terminals 79A, so that the three sub-power module positive terminals 79A are connected together at the input end.

[0249] In some embodiments, as shown in Figures 14 and 18, the controller 800 further includes a conductive connecting piece 56, one end of the conductive connecting piece 56 being used to connect to the power module negative terminal 81, and the other end of the conductive connecting piece 56 being used to connect to the capacitor negative output terminal 75, thereby connecting the power module negative terminal 81 to the capacitor negative output terminal 75. For example, one end of the conductive connecting piece 56 is overlapped to the power module negative terminal 81 along the overlap direction DD, and the other end of the conductive connecting piece 56 is overlapped to the capacitor negative output terminal 75 along the overlap direction DD. Similarly, the power module negative terminal 81 includes three sub-power module negative terminals 81A, each of which is connected to the second end (lower bridge 805) of the three-phase bridge arm 803. The conductive connecting piece 56 is overlapped and connected to the three sub-power module negative terminals 81A. In some embodiments, the conductive connecting piece 56 is configured to connect to one end of the power module negative terminal 81 and has three spaced-apart connecting locations 56A, each corresponding to a corresponding connecting location 56A connecting to a sub-power module negative terminal 81A. In some embodiments, the conductive connecting piece 56 is welded to the power module negative terminal 81, for example, by overlapping and welding. The conductive connecting piece 56 is also welded to the capacitor negative output terminal 75, for example, by overlapping and welding.

[0250] As shown in Figure 18, the power module positive terminal 79 extends beyond (is longer than) the power module negative terminal 81 along the interleaving direction DC. The capacitor positive output terminal 77 extends beyond (is longer than) the capacitor negative output terminal 75 along the interleaving direction DC. The power module positive terminal 79 and the capacitor positive output terminal 77 are stacked along the overlapping direction DD and interleaved with each other along the interleaving direction DC. The interleaving direction DC is parallel to the aforementioned first plane, the overlapping direction DD is perpendicular to the interleaving direction DC, and the overlapping direction DD is perpendicular to the aforementioned first plane. The overlapping direction DD is a bidirectional direction, including a first overlapping direction DD1 and a second overlapping direction DD2 that are opposite to each other. The power module positive terminal 79 is located on the side of the power module negative terminal 81 facing the first overlapping direction DD1 and is spaced apart from the power module negative terminal 81 along the overlapping direction DD. The capacitor positive output terminal 77 is located on the side of the capacitor negative output terminal 75 facing the first overlapping direction DD1 and is spaced apart from the capacitor negative output terminal 75 along the overlapping direction DD. The conductive connecting piece 56 is overlapped and connected to the power module negative terminal 81 on the side of the power module negative terminal 81 facing the second overlap direction DD2, and is overlapped and connected to the capacitor negative output terminal 75 on the side of the capacitor negative output terminal 75 facing the second overlap direction DD2.

[0251] In some embodiments, the power module positive terminal 79 and the power module negative terminal 81 are parallel to each other, for example, also parallel to the first plane. A power module insulator 80 is disposed between the power module positive terminal 79 and the power module negative terminal 81. The power module insulator 80 is located between the power module positive terminal 79 and the power module negative terminal 81 along the overlapping direction DD.

[0252] In some embodiments, the power module insulating member 80 is configured to bend in the second overlapping direction and extend beyond the power module negative terminal 81 along the second overlapping direction DD2. Similarly, the capacitor insulating member 56 can also be configured to bend in the second overlapping direction and extend beyond the capacitor negative output terminal 75 along the second overlapping direction. In some embodiments, the middle portion of the conductive connecting piece 56 along the staggered direction DC is configured to be recessed in the second overlapping direction DD2, and the two sides (or ends) of the conductive connecting piece 56 along the staggered direction DC are respectively connected to the power module negative terminal 81 and the capacitor negative output terminal 75.

[0253] In some embodiments, the power module negative terminal 81 or the capacitor negative output terminal 75 is provided with a first positioning member 82, and the conductive connecting piece 56 is provided with a second positioning member 57. The first positioning member 82 and the second positioning member 57 are correspondingly provided and connected, so that after the conductive connecting piece 56 is stacked and overlapped with the one of the power module negative terminal 81 and the capacitor negative output terminal 75 provided with the first positioning member 82, the conductive connecting piece 56 cannot move relative to the one in a direction perpendicular to the overlap direction DD, thereby ensuring the welding accuracy of the conductive connecting piece 56 to the one.

[0254] In some embodiments, the housing 10 is provided with mounting positions for the power module 83 and the capacitor assembly 55. By design, after the power module 83 and the capacitor assembly 55 are installed in the housing 10, the power module positive terminal 79 and the capacitor positive output terminal 77 will form a relative position overlapping each other, and can stably maintain this relative position under the limiting effect of their respective mounting positions. At this time, the power module positive terminal 79 and the capacitor positive output terminal 77 can be welded together. Then, the conductive connecting piece 56 is welded to the power module negative terminal 81 and the capacitor negative output terminal 75 respectively, and the first positioning component 82 and the second positioning component 57 are used to keep the conductive connecting piece 56 in a stable relative position relative to the power module negative terminal 81 and the capacitor negative output terminal 75 to ensure welding accuracy. In the present application, for example, laser welding is used to improve welding accuracy and the safety of the welding process.

[0255] In some embodiments, the first positioning component 82 can also be simultaneously set to the power module negative terminal 81 and the capacitor negative output terminal 75, so that after the conductive connecting piece 56 is stacked and overlapped to the power module negative terminal 81 and the capacitor negative output terminal 75, it cannot move relative to the two in a direction perpendicular to the overlapping direction.

[0256] In some embodiments, the first positioning component 82 includes at least two first positioning sub-components, and the second positioning component 57 includes at least two second positioning sub-components. The second positioning sub-components are correspondingly arranged and connected to the first positioning sub-components, thereby preventing the conductive connecting piece 56 from rotating relative to the power module negative terminal 81 and the capacitor negative output terminal 75. In some embodiments, one of the first positioning component 82 and the second positioning component 57 is configured as a protrusion, and the other of the first positioning component 82 and the second positioning component 57 is configured as a groove or through-hole for accommodating the protrusion.

[0257] In an embodiment not shown in the present application, compared with the illustrated embodiment, the difference is that the capacitor negative output terminal 75 and the capacitor positive output terminal 77 are set in opposite ways (swapped), the power module positive terminal 79 and the power module negative terminal 81 are set in opposite ways (swapped), the capacitor negative output terminal 75 and the power module negative terminal 81 are directly overlapped and welded, and the capacitor positive output terminal 77 and the power module positive terminal 79 are connected via a conductive connecting piece 56.

[0258] In some embodiments, power module 83 includes a first power module terminal and a second power module terminal. The first power module terminal is one of the power module positive terminal 79 and the power module negative terminal 81, and the second power module terminal is the other of the power module positive terminal 79 and the power module negative terminal 81. The first power module terminal is connected to one end of the three-phase bridge arm 803, and the second power module terminal is connected to the other end of the three-phase bridge arm 803. In some embodiments, the first power module terminal and the second power module terminal are located on the same side of the power module 83.

[0259] In some embodiments, the capacitor assembly 55 includes a first capacitor terminal and a second capacitor terminal, the first capacitor terminal being used to correspond to and be connected to the first power module terminal (when the first power module terminal is the power module positive terminal 79, the first capacitor terminal is the capacitor positive output terminal 77; when the first power module terminal is the power module negative terminal 81, the first capacitor terminal is the capacitor negative output terminal 75), and the second capacitor terminal being used to correspond to and be connected to the second power module terminal (when the second power module terminal is the power module positive terminal 79, the second capacitor terminal is the capacitor positive output terminal 77; when the second power module terminal is the power module negative terminal 81, the second capacitor terminal is the capacitor negative output terminal 75). In some embodiments, the first capacitor terminal and the second capacitor terminal are located on the same side of the capacitor assembly 55. In some embodiments, the first power module terminal and the first capacitor terminal are directly overlapped and welded, and the second power module terminal and the second capacitor terminal are connected via a conductive connecting piece 56.

[0260] The controller according to this application achieves a battery heating function by disposing an A-wire conductive component within the housing, connecting the second end of the motor winding to the center of the first and second sub-battery packs connected in series. Furthermore, boost charging is achieved by reusing the motor winding and part of the A-wire conductive component. The controller has a rational structure and stable performance. It is understood that the electric assembly, drive system, and vehicle according to this application include all the features and effects of the controller according to this application.

[0261] The processes and steps described in all the preferred embodiments described above are merely examples. Unless adverse effects occur, various processing operations may be performed in a different order from the above process. The order of the steps in the above process may also be increased, combined, or deleted according to actual needs.

[0262] In understanding the scope of this application, the term "comprise" and its derivatives as used herein are intended to be open terms that specify the presence of recited features, elements, components, groups, wholes, and / or steps, but do not exclude the presence of other unrecorded features, elements, components, groups, wholes, and / or steps. This concept also applies to words with similar meanings, such as the terms "include," "have," and their derivatives.

[0263] As used herein, the terms "attached" or "attached" include: configurations where an element is directly secured to another element by securing it directly to the other element; configurations where an element is indirectly secured to the other element by securing it to an intermediate member that is in turn secured to the other element; and configurations where one element is integral with the other, i.e., one element is substantially a part of the other. This definition also applies to words with similar meanings such as "connect," "connect," "couple," "mount," "bond," "secure," and their derivatives. Finally, terms of degree such as "substantially," "approximately," and "approximately" as used herein represent an amount of deviation that would modify the term such that the end result would not be significantly changed.

[0264] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art in the art of this application. The terms used herein are merely for describing specific implementation purposes and are not intended to limit this application. Features described herein in one embodiment may be applied to another embodiment alone or in combination with other features, unless the feature is not applicable in the other embodiment or is otherwise indicated.

[0265] The present application has been described through the above-described embodiments, but it should be understood that the above-described embodiments are for illustrative and illustrative purposes only and are not intended to limit the present application to the described embodiments. In addition, those skilled in the art will understand that the present application is not limited to the above-described embodiments, and that various variations and modifications may be made based on the teachings of the present application, all of which fall within the scope of protection claimed in the present application.

Claims

1. A controller (800), characterized in that: The controller (800) comprises: Box body (10); A power module (83) is arranged in the housing (10), wherein the power module (83) comprises: The power module three-phase connection terminals (84) are used to respectively connect the first ends of the three-phase windings (701) of the motor (700), A power module positive electrode terminal (79) for at least indirectly connecting to the positive electrode of the battery pack (600), and A power module negative electrode terminal (81), used for at least indirectly connecting to the negative electrode of the battery pack (600); and An A-line conductive component (860) is disposed in the box (10), the A-line conductive component (860) comprising an A-line conductive component first end (861) and an A-line conductive component second end (862), the A-line conductive component first end (861) being used to at least indirectly connect to the middle of a first sub-battery pack (U1) and a second sub-battery pack (U2) connected in series in the battery pack (600), and the A-line conductive component second end (862) being used to at least indirectly connect to the second end of at least one phase winding (701) of the motor (700).

2. The controller (800) according to claim 1, characterized in that: The controller (800) further comprises a capacitor component (55), wherein the capacitor component (55) comprises: a first capacitor core (179); A first capacitor positive electrode conductive sheet (901) connected to the first capacitor core (179); and A capacitor negative electrode conductive sheet (905) connected to the first capacitor core (179); One end of the first capacitor positive electrode conductive sheet (901) is connected to the power module positive electrode terminal (79), and the other end of the first capacitor positive electrode conductive sheet (901) is used to at least indirectly connect to the positive electrode of the battery pack (600). One end of the capacitor negative electrode conductive sheet (905) is connected to the power module negative electrode terminal (81), and the other end of the capacitor negative electrode conductive sheet (905) is used to be at least indirectly connected to the negative electrode of the battery pack (600).

3. The controller (800) according to claim 2, characterized in that: The capacitor component (55) is provided with an A-line support position (59), the A-line support position (59) is connected to the first end (861) of the A-line conductive component, and the first end (861) of the A-line conductive component is used to connect to the battery pack (600).

4. The controller (800) according to claim 3, characterized in that: The box body (10) comprises a first plug-in interface (810), and the A-line support position (59) is arranged adjacent to the first plug-in interface (810).

5. The controller (800) according to claim 3, characterized in that: The capacitor assembly (55) further comprises a capacitor shell (51), the A-line conductive assembly (860) is at least partially disposed in the capacitor shell (51), and the capacitor shell (51) is an insulating shell.

6. The controller (800) according to claim 5, characterized in that: The controller (800) further comprises a heat conducting member (102), wherein the heat conducting member (102) is arranged between the A-line conductive component (860) and the inner wall of the housing (10) of the controller (800).

7. The controller (800) according to claim 6, characterized in that: It also includes an insulating member (91), wherein the insulating member (91) is arranged between the heat conducting member (102) and the inner wall of the box body (10).

8. The controller (800) according to claim 7, characterized in that: The upper surface of the insulating member (91) contacts the lower surface of the upper cover of the box body (10), the lower surface of the insulating member (91) contacts the upper surface of the heat conductive member (102), and the lower surface of the heat conductive member (102) contacts the A-line conductive component (860).

9. The controller (800) according to claim 8, characterized in that: The A-line conductive component (860) comprises a first A-line conductive member (176) disposed above the capacitor housing (51), and the heat conductive member (102) is disposed between the first A-line conductive member (176) and the inner wall of the box body (10).

10. The controller (800) according to claim 6, characterized in that: The heat conducting element (102) is configured as heat conducting mud.

11. The controller (800) according to claim 1, characterized in that: The box body (10) further comprises a second opening (32), and the second end (862) of the A-line conductive component is arranged adjacent to the second opening (32), or the second end (862) of the A-line conductive component is arranged at the second opening (32).

12. The controller (800) according to claim 11, characterized in that: The controller (800) further comprises a first wiring seat (99), the first wiring seat (99) being arranged adjacent to the second opening (32), the first wiring seat (99) comprising a first wiring seat three-phase wiring terminal (101) connected to the power module three-phase wiring terminal (84), The second end (136B) of the second A-line conductive member is connected to the first wiring seat (99).

13. The controller (800) according to claim 1, characterized in that: The A-line conductive component (860) comprises: A first A-line conductive member (176), wherein the first A-line conductive member (176) has a first A-line conductive member first end (176A) and a first A-line conductive member second end (176B), wherein the first A-line conductive member first end (176A) is the first end (861) of the A-line conductive component; and A second A-line conductive member (136), wherein the second A-line conductive member (136) has a second A-line conductive member first end (136A) and a second A-line conductive member second end (136B), wherein the second A-line conductive member The first end (136A) is connected to the second end (176B) of the first A-line conductive component, and the second end (136B) of the second A-line conductive component is the second end (862) of the A-line conductive component.

14. The controller (800) according to claim 13, characterized in that: It also includes a charging socket (115) for connecting a charging device. The A-line conductive component (860) further includes an A-line conductive component third end (863), and the A-line conductive component third end (863) is used to at least indirectly connect to the positive electrode of the charging device.

15. The controller (800) according to claim 14, characterized in that: The charging socket (115) comprises a positive charging terminal (170) and a negative charging terminal (171). The charging positive electrode terminal (170) is used to connect the positive electrode of the charging device, and the charging negative electrode terminal (171) is used to connect the negative electrode of the charging device. The third end (863) of the A-line conductive component is used to be at least indirectly connected to the charging positive terminal (170).

16. The controller (800) according to claim 15, characterized in that: The A-line conductive component (860) further comprises a third A-line conductive member (123), wherein the third A-line conductive member (123) has a third A-line conductive member first end (123A) and a third A-line conductive member second end (123B), wherein: The first A-line conductive element (176) further includes a first A-line conductive element third end (176C), the third A-line conductive element first end (123A) is connected to the first A-line conductive element third end (176C), and the third A-line conductive element second end (123B) is the A-line conductive component third end (863); or The first end (123A) of the third A-line conductive component is connected to the first end (136A) of the second A-line conductive component, and the second end (123B) of the third A-line conductive component is the third end (863) of the A-line conductive component.

17. The controller (800) according to claim 16, characterized in that: The A-line conductive component (860) further comprises a fourth A-line conductive member (131), wherein: The two ends of the fourth A-line conductive member (131) are respectively connected to the third end (176C) of the first A-line conductive member and the first end (123A) of the third A-line conductive member, so that the first end (123A) of the third A-line conductive member is connected to the third end (176C) of the first A-line conductive member; or The two ends of the fourth A-line conductive member (131) are respectively connected to the first end (136A) of the second A-line conductive member and the first end (123A) of the third A-line conductive member, so that the first end (123A) of the third A-line conductive member is connected to the first end (136A) of the second A-line conductive member.

18. The controller (800) according to claim 16, characterized in that: The controller (800) further comprises: A sub-positive electrode conductive component (843), the sub-positive electrode conductive component comprising a sub-positive electrode conductive component first end (844) and a second end (845) of a sub-positive electrode conductive component, wherein the first end (844) of the sub-positive electrode conductive component is connected to the charging positive electrode terminal (170), and A first switch element (122), wherein a first end of the first switch element (122) is connected to a second end (845) of the sub-positive electrode conductive component, and a second end of the first switch element (122) is connected to a second end (123B) of the third A-line conductive component.

19. The controller (800) according to claim 18, characterized in that: The sub-positive electrode conductive component (843) comprises: A first positive electrode conductive member (125), the first positive electrode conductive member (125) comprising a first positive electrode conductive member first end (125A) and a first positive electrode conductive member second end (125B), wherein the first positive electrode conductive member first end (125A) is the first end (844) of the sub-positive electrode conductive assembly, A second positive conductive member (127), the second positive conductive member (127) comprises a second positive conductive member first end (127A) and a second positive conductive member second end (127B), wherein the second positive conductive member first end (127A) is connected to the first positive conductive member second end (125B), and the second positive conductive member second end (127B) is the second end (845) of the sub-positive conductive assembly.

20. The controller (800) according to claim 19, characterized in that: The first positive electrode conductive member (125) further includes a first positive electrode conductive member third end (125C), The controller (800) further comprises: a second switch element (124), wherein a first end of the second switch element (124) is connected to a third end (125C) of the first positive conductive member, A third positive conductor (128), the third positive conductor (128) comprising a third positive conductor first end (128A) and a third positive conductor second end (128B), wherein the third positive conductor first end (128A) is connected to the second end of the second switch element (124), and the third positive conductor second end (128B) is used to be at least indirectly connected to the positive electrode of the battery pack (600).

21. The controller (800) according to claim 19, characterized in that The second positive electrode conductive component (127) further includes a second positive electrode conductive component third end (127C), and the second positive electrode conductive component third end (127C) is connected to the capacitor.

22. The controller (800) according to claim 15, characterized in that Also includes: A sub-negative electrode conductive component (843), the sub-negative electrode conductive component (843) comprising a sub-negative electrode conductive component first end (844) and a sub-negative electrode conductive component second end (845), the sub-negative electrode conductive component first end (844) being connected to the charging negative electrode terminal (171), and the sub-negative electrode conductive component second end (845) being used to be at least indirectly connected to the negative electrode of the battery pack (600).

23. The controller (800) according to claim 22, characterized in that The sub-negative electrode conductive component (843) comprises: A first negative electrode conductive member (126), the first negative electrode conductive member (126) comprising a first negative electrode conductive member first end (126A) and a first negative electrode conductive member second end (126), wherein the first negative electrode conductive member first end (126A) is the first end (844) of the sub-negative electrode conductive component, A second negative electrode conductive member (92), the second negative electrode conductive member (92) comprises a second negative electrode conductive member first end (92A) and a second negative electrode conductive member second end (92B), wherein the second negative electrode conductive member first end (92A) is connected to the first negative electrode conductive member second end (126), and the second negative electrode conductive member second end (92B) is the second end (845) of the sub-negative electrode conductive assembly.

24. The controller (800) according to any one of claims 1 to 23, characterized in that: The second end (862) of the A-line conductive component is used to be at least indirectly connected to the second end of the three-phase winding (701) of the motor (700).

25. An electric assembly (870), characterized in that: include: A motor (700), wherein the motor (700) comprises a three-phase winding (701); and The controller (800) according to any one of claims 1 to 24, The three-phase connection terminals (84) of the power module are respectively connected to the first ends of the three-phase windings (701), and the second end (862) of the A-line conductive component is at least indirectly connected to the second end of at least one phase of the winding (701).

26. The electric assembly (870) according to claim 25, characterized in that: The second end (862) of the A-line conductive component is at least indirectly connected to the second end of the three-phase winding (701).

27. The electric assembly (870) according to claim 25, characterized in that: The motor (700) comprises a motor terminal block (146), the electrode terminal block (146) comprises a motor A line terminal (144), an electric control A line terminal (148), a motor three-phase line terminal (145) and an electric control three-phase line terminal (147), the motor A line terminal (144) is connected to the electric control A line terminal (148), the motor three-phase line terminal (145) is connected to the electric control three-phase line terminal (147) correspondingly, The motor three-phase line terminal (145) is used to connect the first end of the three-phase winding (701), the motor A line terminal (144) is used to connect the second end of at least one phase of the winding (701), the electric control three-phase line terminal (147) is used to connect the power module three-phase terminal (84), and the electric control A line terminal (148) is used to at least indirectly connect the second end (862) of the A line conductive component.

28. The electric assembly (870) according to claim 27, characterized in that: The controller (800) further comprises a first terminal block (99), wherein the first terminal block (99) comprises a first terminal block three-phase terminal (101), wherein the first terminal block three-phase terminal (101) is connected to the electric control three-phase line terminal (147), and the second end (862) of the A line conductive component is connected to the electric control A line terminal (148) via the first terminal block (99).

29. A drive system (890), characterized in that: include: A battery pack (600) for providing power, the battery pack (600) comprising a first sub-battery pack (U1) and a second sub-battery pack (U2) connected in series; and The electric assembly (870) according to any one of claims 25 to 28, Wherein, the first end (861) of the A-line conductive component is at least indirectly connected to the middle of the first sub-battery pack (U1) and the second sub-battery pack (U2) connected in series, the positive terminal (79) of the power module is at least indirectly connected to the positive electrode of the battery pack (600), and the negative terminal (81) of the power module is at least indirectly connected to the negative electrode of the battery pack (600).

30. The drive system (890) according to claim 29, characterized in that It also includes a first connecting component (9) for connecting the battery pack (600) and the controller (800), the first connecting component (9) including a first A-wire (801A), one end of the first A-wire (801A) being used to connect the first end (861) of the A-wire conductive component, and the other end of the first A-wire (801A) being used to connect the middle of the first sub-battery pack (U1) and the second sub-battery pack (U2) connected in series.

31. The drive system (890) according to claim 30, characterized in that The power module positive electrode terminal (79) is used to at least indirectly connect to the positive electrode of the battery pack (600) via a positive DC bus (807). The power module negative electrode terminal (81) is used to at least indirectly connect to the positive electrode of the battery pack (600) via a negative electrode DC bus (808). The first connection assembly (9) further comprises a portion of the positive DC bus (807) and a portion of the negative DC bus (808), The first A line (801A) is located between the portion of the positive DC bus (807) and the portion of the negative DC bus (808).

32. The drive system (890) according to claim 31, characterized in that One end of the first A line (801A) used for connecting to the controller (800), one end of the partial positive DC bus (807) used for connecting to the controller (800), and one end of the partial negative DC bus (808) used for connecting to the controller (800) are all passed through the magnetic ring (93).

33. A vehicle, characterized in that: Comprising a drive system (890) according to any one of claims 29 to 32, wherein the motor (700) is connected to wheels of the vehicle.

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