CN220517992U

CN220517992U - Dual-motor control equipment, charging and discharging equipment and electric equipment

Info

Publication number: CN220517992U
Application number: CN202321753427.XU
Authority: CN
Inventors: 黄益飞; 颜昱; 刘添; 陈兴; 王春法
Original assignee: Contemporary Amperex Technology Co Ltd
Current assignee: Contemporary Amperex Technology Co Ltd
Priority date: 2023-07-05
Filing date: 2023-07-05
Publication date: 2024-02-23
Anticipated expiration: 2033-07-05

Abstract

The application discloses a dual-motor control device, charging and discharging equipment and electric equipment. The double-motor control equipment comprises a box body, a first motor control device, a second motor control device and an inductance adjusting device, wherein the first motor control device, the second motor control device and the inductance adjusting device are arranged in the box body; the wall of the box body is provided with a first motor neutral line interface and a second motor neutral line interface; the first end of the inductance adjusting device is connected with the first motor neutral line interface, and the second end of the inductance adjusting device is connected with the second motor neutral line interface; the inductance adjustment device comprises at least one inductance. The double-motor control equipment of the embodiment of the application is characterized in that the first motor control device and the second motor control device are arranged in the box body, so that the space utilization rate is optimized, the occupied space is reduced, and the double-motor control equipment is convenient to install and place.

Description

Dual-motor control equipment, charging and discharging equipment and electric equipment

Technical Field

The application relates to the technical field of batteries, in particular to dual-motor control equipment, charging and discharging equipment and electric equipment.

Background

With the development of new energy technology, the electric automobile using the power battery as a power source has a higher and higher market occupancy. In practical application, in order to improve the adaptability of an electric vehicle in a low-temperature area, a power battery self-heating technology is generally adopted to self-heat a power battery in a low-temperature environment. The self-heating technical scheme is that a motor controller and a motor are utilized to excite a battery to generate a charge-discharge current with alternating positive and negative, so that the internal resistance of the power battery generates heat after passing through the current, and the self-heating of the power battery is realized.

In the related art, a double-motor charge-discharge circuit is adopted to charge and discharge a power battery so as to realize self-heating of the power battery, and the charge-discharge circuit comprises a power supply module, two motor control devices and two motors, wherein each motor control device correspondingly controls one motor. The two motor control devices contained in the double-motor charge-discharge circuit occupy larger space and are inconvenient to install and place.

The statements are to be understood as merely provide background information related to the present application and may not necessarily constitute prior art.

Disclosure of Invention

In view of the problems that two motor control devices contained in the double-motor charging and discharging circuit in the related art occupy a large space and are inconvenient to install and place, the application provides double-motor control equipment, charging and discharging equipment and electric equipment.

In a first aspect of the embodiments of the present application, a dual-motor control apparatus is provided, including a case, and a first motor control device, a second motor control device, and an inductance adjustment device disposed in the case; the wall of the box body is provided with a first motor neutral line interface and a second motor neutral line interface; the first end of the inductance adjusting device is connected with the first motor neutral line interface, and the second end of the inductance adjusting device is connected with the second motor neutral line interface; the inductance adjustment device comprises at least one inductance.

The first motor control device and the second motor control device are arranged in the box body, so that the space utilization rate is optimized, the occupied space is reduced, and the installation and the placement are convenient.

In some embodiments of the present application, the dual-motor control apparatus further includes a first switch module, the first switch module is connected to a line between the first motor neutral line interface and the second motor neutral line interface, and an on-off control end of the first switch module is connected to at least one of the first motor control device and the second motor control device, respectively. The charging and discharging circuit can be conveniently disconnected by disconnecting the first switch module so as to exit the self-heating mode.

In some embodiments of the present application, the inductance adjustment device includes a plurality of series-connected inductances, the dual-motor control device further includes at least one second switch module, the second switch module is connected in parallel with at least one of the inductances, and an on-off control end of the second switch module is connected with at least one of the first motor control device and the second motor control device respectively. When the second switch module is conducted, the inductance connected with the second switch module in parallel can be short-circuited, so that the number of the inductances connected into the charge-discharge circuit can be adjusted, and the inductance in the charge-discharge circuit can be adjusted.

In some embodiments of the present application, the at least one second switching module corresponds to the plurality of series-connected inductors one by one, and each second switching module is connected in parallel with a respective corresponding inductor. And each inductor is connected with a second switch module in parallel, so that the number of the inductors connected into the charge-discharge circuit can be flexibly adjusted, and the flexible adjustment of the inductance in the charge-discharge circuit is realized.

In some embodiments of the present application, the inductance adjustment device includes a plurality of parallel branches, each branch is connected in series with at least one third switch module and at least one inductance, and an on-off control end of the third switch module is connected with at least one of the first motor control device and the second motor control device respectively. By controlling the on and off of the third switch module in each branch, flexible adjustment of inductance in the charge-discharge circuit can be achieved.

In some embodiments of the present application, the inductance adjusting device further includes a first branch connected in parallel with any one of the branches, the first branch includes a fourth switch module, and an on-off control end of the fourth switch module is connected to at least one of the first motor control device and the second motor control device respectively. The fourth switch module can be used for more flexibly adjusting the inductance in the charge-discharge circuit.

In some embodiments of the present application, the dual motor control apparatus further includes a cooling device, and the tank is provided with a cooling medium inlet and a cooling medium outlet that are in communication with the cooling device.

The cooling medium enters the cooling device through the cooling medium inlet, and the cooling medium in the cooling device is discharged to the outside of the box body from the cooling medium outlet, so that the heat dissipation function is realized.

In some embodiments of the present application, at least one inductor is disposed on an outer surface of the cooling device, so that heat dissipation of the inductor can be effectively achieved, and damage to the inductor caused by accumulation of heat of the inductor is avoided.

In some embodiments of the present application, at least a portion of an outer surface of at least one of the inductors is coated with a thermal paste, which is capable of effectively dissipating heat from the inductor, and avoiding damage to the inductor caused by accumulation of heat in the inductor.

In some embodiments of the present application, the first motor control device and the second motor control device are respectively disposed on two sides of the cooling device relatively, so that heat dissipation can be performed on the first motor control device and the second motor control device uniformly at the same time, and thus heat dissipation effect is further enhanced.

In some embodiments of the present application, the cooling device divides the case into a first chamber and a second chamber, the first motor control device is disposed in the first chamber, the second motor control device is disposed in the second chamber, and the inductance adjustment device is disposed in one of the first chamber and the second chamber. Therefore, the space layout in the box body is further optimized, the full utilization of the space in the box body is realized, and the whole box body is further reduced in size.

In some embodiments of the present application, the dual-motor control apparatus further includes a first housing and a second housing disposed in the case, the first housing and the second housing are disposed opposite to each other in both sides of the cooling device, the first motor control device is disposed in the first housing, the second motor control device is disposed in the second housing, and the inductance adjusting device is disposed in one of the first housing and the second housing. In this way, a modular assembly of the first and second motor control devices is achieved, facilitating installation of the first and second motor control devices inside the housing.

In some embodiments of the present application, the cooling device comprises at least one cooling tank; the cooling tank is respectively communicated with the cooling medium inlet and the cooling medium outlet. The cooling box has the advantages of simple structure, small occupied space, convenient installation and use and good heat dissipation effect.

In some embodiments of the present application, a spoiler column is disposed within the cooling box. The turbulent flow column can reduce the flow rate of the cooling medium, so that the cooling medium can more fully absorb heat in the box body, and the heat dissipation effect is enhanced.

In some embodiments of the present application, the box includes a box body, set up relatively in first box lid and second box lid at box body both ends, first box lid with be provided with electromagnetic shield sealing washer between the box body, the second box lid with be provided with electromagnetic shield sealing washer between the box body. The electromagnetic shielding sealing ring can provide electromagnetic shielding function, and achieves better electromagnetic shielding effect.

In some embodiments of the present application, a first motor three-phase interface, a battery-powered first positive electrode interface, a battery-powered first negative electrode interface, and a second motor three-phase interface, a battery-powered second positive electrode interface, and a battery-powered second negative electrode interface, which are respectively connected with the second motor control device, are further provided on the wall of the case. The first motor three-phase interface facilitates connection of the first motor control device with the first motor three-phase winding, and the battery-powered first positive electrode interface and the battery-powered first negative electrode interface facilitate connection of the first motor control device with positive and negative electrodes of a power supply module, such as a battery or the like. The second motor three-phase interface facilitates connection of the second motor control device with the second motor three-phase winding, and the battery-powered second positive electrode interface and the battery-powered second negative electrode interface facilitate connection of the second motor control device with positive and negative electrodes of a power supply module, such as a battery or the like.

In some embodiments of the present application, any one of the first motor control device and the second motor control device includes a motor control board, and three driving circuit boards and three power modules connected with the motor control board, respectively, the three driving circuit boards and the three power modules being connected one to one. Under the control of the motor control board, the driving circuit board can drive the power module connected with the driving circuit board to work, and the motor can be conveniently and rapidly controlled.

In some embodiments of the present application, the arbitrary motor control device further includes an electromagnetic isolation board, where the electromagnetic isolation board is disposed between the motor control board and the three driving circuit boards, and isolates the motor control board from the three driving circuit boards, thereby playing a role of electromagnetic isolation and reducing electromagnetic interference between the motor control board and the three driving circuit boards.

In a second aspect of the embodiments of the present application, a charge-discharge device is provided, including a power supply module, a first motor, a second motor, and a dual-motor control device according to any one of the embodiments of the present application, where a positive electrode interface and a negative electrode interface of the dual-motor control device are respectively connected to a positive electrode and a negative electrode of the power supply module; the first neutral line interface and the second neutral line interface of the double-motor control device are respectively connected with the neutral line of the first motor and the neutral line of the second motor; a first motor winding interface of the dual-motor control device is connected with a winding of the first motor; the second motor winding interface of the dual motor control device is connected with the winding of the second motor. The charge and discharge device provided in the second aspect of the embodiment of the present application can achieve the same technical effects as the dual-motor control device of the first aspect.

In a third aspect of the embodiments of the present application, a powered device is provided, including a charging and discharging device according to any one of the embodiments of the present application. The electric equipment provided by the third aspect of the embodiment of the application can achieve the same technical effect as the double-motor control equipment of the first aspect.

The foregoing description is only an overview of the embodiments of the present application, and may be implemented in accordance with the content of the specification in order to make the technical means of the embodiments of the present application more clearly understood, and in order to make the above-mentioned and other objects, features and advantages of the embodiments of the present application more comprehensible, the following detailed description of the present application.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the embodiments. The drawings are only for purposes of illustrating embodiments of the present application and are not to be construed as limiting the application. Also, like reference numerals are used to designate like parts throughout the accompanying drawings.

FIG. 1 is a schematic structural view of a vehicle according to one or more embodiments.

Fig. 2 is a schematic structural diagram of a dual motor control device according to one or more embodiments.

Fig. 3 is a schematic structural diagram of a dual motor control device according to one or more embodiments.

Fig. 4 is a schematic structural diagram of a dual motor control device according to one or more embodiments.

Fig. 5 is a schematic structural diagram of a dual motor control device according to one or more embodiments.

Fig. 6 is a schematic structural diagram of a dual motor control device according to one or more embodiments.

Fig. 7 is a schematic structural diagram of a dual motor control device according to one or more embodiments.

Fig. 8 is a schematic structural diagram of a dual motor control device according to one or more embodiments.

Fig. 9 is a schematic structural diagram of a dual motor control device according to one or more embodiments.

Fig. 10 is a schematic structural diagram of a dual motor control device according to one or more embodiments.

Fig. 11 is a schematic diagram of an inductor disposed on a surface of a cooling box in accordance with one or more embodiments.

Fig. 12 is a schematic structural diagram of a dual motor control device according to one or more embodiments.

Fig. 13 is a schematic structural view of a case according to one or more embodiments.

Fig. 14 is a schematic structural diagram of a dual motor control device according to one or more embodiments.

FIG. 15 is a schematic diagram of an interface structure on a side wall of a housing in accordance with one or more embodiments.

FIG. 16 is a schematic illustration of an interface structure on another side wall of a housing in accordance with one or more embodiments.

Fig. 17 is a schematic diagram of a structure of a view of a first motor control device according to one or more embodiments.

Fig. 18 is a schematic structural diagram of another perspective of a first motor control device in accordance with one or more embodiments.

Fig. 19 is a schematic circuit diagram of a dual motor control device according to one or more embodiments.

Fig. 20 is a schematic cross-sectional structural view of a dual motor control device in accordance with one or more embodiments.

Fig. 21 is a schematic structural diagram of a charge-discharge apparatus according to one or more embodiments.

The meaning of the reference numerals in the above figures is: 1000: vehicle, 100: battery, 200: double motor control device, 300: dual motor device, 400: a charge-discharge circuit; 1: box, 2: first motor control device, 3: second motor control device, 4: inductance adjusting device, 5: cooling device, 6: first electromagnetic shielding sealing ring, 7: second electromagnetic shielding sealing ring, 8: electromagnetic separator, 9: shielding magnetic ring, 10: a first bus capacitor; 11: box body, 12: first box lid, 13: second case lid, 14: first motor control interface, 15: battery powered first positive interface, 16: battery powered first negative interface, 17: second motor control interface, 18: battery powered second positive interface, 19: battery powered second negative interface, 20: a case mount; 21: first motor control board, 22: first drive circuit board, 23: second drive circuit board, 24: third drive circuit board, 25: first power module, 26: second power module, 27: third power module, 28: relay, 29: first current sensor, 30: second current sensor, 31: third current sensor, 32: first motor control board, 33: first drive circuit board, 34: second drive circuit board, 35: third drive circuit board, 36: first power module, 37: second power module, 38: third power module, 39: second bus capacitance, 41: first switch module, 42: second switch module, 43: third switch module, 44: fourth switch module, 45: an inductance; 46: an inductance bottom shell; 47: inductance fixing bolt, 48: heat conductive paste coated face, 49: copper bar fixing bolt, 51: cooling medium inlet, 52: cooling medium outlet, 53: first cooling tank, 54: second cooling box, 55: first spoiler column, 56: second spoiler column, 60: first chamber, 61: second chamber, 62: first housing, 63: second housing, 141: first motor three-phase interface, 142: first motor neutral interface, 151: first positive output copper bar of first motor control device, 152: first negative electrode output copper bar of first motor control device, 153: first power module output copper bar, 154: second power module output copper bar, 155: third power module output copper bar, 156: first central line switching copper bar, 157: second neutral transfer copper bar, 158: third neutral transfer copper bars, 159: motor neutral output copper bar, 161: first positive output copper bar of second motor control device, 162: the second motor control device first negative output copper bar, 171: second motor three-phase interface, 172: second motor neutral interface, 1411: first motor U-phase interface, 1412: first motor V-phase interface, 1413: first motor W-phase interface, 1711: second motor U-phase interface, 1712: second motor V-phase interface, 1713: and a second motor W phase interface.

Detailed Description

Embodiments of the technical solutions of the present application will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical solutions of the present application, and thus are only examples, and are not intended to limit the scope of protection of the present application.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description and claims of the present application and in the description of the figures above are intended to cover non-exclusive inclusions.

In the description of the embodiments of the present application, the technical terms "first," "second," etc. are used merely to distinguish between different objects and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, a particular order or a primary or secondary relationship. In the description of the embodiments of the present application, the meaning of "plurality" is two or more unless explicitly defined otherwise.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

The new energy electric equipment has increasingly adopted a double-motor structure, wherein each motor is correspondingly provided with a control device, the control device of the double motors and windings of the double motors form a charging and discharging loop, and under the low temperature state, the double-motor charging and discharging circuit is generally adopted to charge and discharge the power battery so as to realize self-heating of the power battery. The two motor control devices contained in the double-motor charge-discharge circuit adopted in the related technology occupy larger space and are inconvenient to install and place.

Aiming at the problems in the related art, the embodiment of the application provides a double-motor control device, which comprises a box body, a first motor control device, a second motor control device and an inductance adjusting device, wherein the first motor control device, the second motor control device and the inductance adjusting device are arranged in the box body; the wall of the box body is provided with a first motor neutral line interface and a second motor neutral line interface; the first end of the inductance adjusting device is connected with the first motor neutral line interface, and the second end of the inductance adjusting device is connected with the second motor neutral line interface; the inductance adjusting device comprises at least one inductance, the first motor control device and the second motor control device are arranged in the box body, the space utilization rate is optimized, the occupied space is reduced, and the installation and the placement are convenient.

The embodiment of the application also provides electric equipment using the double-motor control equipment, and the electric equipment can be but is not limited to an electric toy, an electric tool, a battery car, an electric automobile, a ship, a spacecraft and the like. The electric equipment uses the double-motor control equipment of the embodiment of the application, and controls the battery to supply power for the double-motor device through the double-motor control equipment, or controls the battery to charge and discharge through the double-motor control equipment.

For convenience of description, the following embodiments take a powered device according to an embodiment of the present application as an example of the vehicle 1000.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a vehicle 1000 according to some embodiments of the present application. The vehicle 1000 may be a new energy vehicle, which may be a pure electric vehicle or a range-extended vehicle. The battery 100 is provided in the interior of the vehicle 1000, and the battery 100 may be provided at the bottom or the head or the tail of the vehicle 1000. The battery 100 may be used for power supply of the vehicle 1000, for example, the battery 100 may be used as an operating power source of the vehicle 1000. The vehicle 1000 may further include a two-motor control apparatus 200 and a two-motor device 300, the two-motor control apparatus 200 being configured to control the battery 100 to supply power to the two-motor device 300, for example, for operating power requirements at the time of starting, navigating, and traveling of the vehicle 1000.

The battery 100 may also be used as a driving power source for the vehicle 1000 to provide driving power for the vehicle 1000. The two-motor device 300 converts electric energy output from the battery 100 into mechanical energy, thereby driving the vehicle 1000 to move. The dual motor device 300 includes a first motor and a second motor.

Referring to fig. 2, fig. 2 is a schematic structural diagram of a dual-motor control apparatus provided in some embodiments of the present application, and one embodiment of the present application provides a dual-motor control apparatus, including a case 1, and a first motor control device 2, a second motor control device 3, and an inductance adjustment device 4 disposed in the case 1; the wall of the box body 1 is provided with a first motor neutral line interface 142 and a second motor neutral line interface 172; the first end of the inductance adjustment device 4 is connected to the first motor neutral interface 142, the second end of the inductance adjustment device is connected to the second motor neutral interface 172, and the inductance adjustment device 4 comprises at least one inductance.

The inductance adjusting device 4 can increase the inductance in the charge-discharge circuit when the inductance of the double motor is insufficient, so as to reduce the limitation of the double motor inductance when the battery is heated at high frequency and high speed, and further effectively improve the heating power of the battery.

The first motor control device 2 and the second motor control device 3 are arranged in the box body 1, so that the space utilization rate is optimized, the occupied space is reduced, and the installation and the placement are convenient.

Referring to fig. 3, in some embodiments, the dual motor control apparatus further includes a first switch module 41, the first switch module 41 is connected on a line between the first motor neutral line interface 142 and the second motor neutral line interface 172, and an on-off control end of the first switch module 41 is connected to at least one of the first motor control device 2 and the second motor control device 3, respectively.

The on-off control terminal may also be referred to as a first terminal. The first ends of the first switch modules 41 are connected to at least one of the first motor control device 2 and the second motor control device 3, respectively, for example, the first ends of the first switch modules 41 may be connected to the first motor control device 2 and the second motor control device 3, respectively. A second end of the first switch module 41 is connected to the first motor neutral interface 142 and a third end of the first switch module 41 is connected to the second motor neutral interface 172.

The first switch module 41 may be a component having a switching function such as a relay, for example, and at least one of the first motor control device 2 and the second motor control device 3 is connected to a first end of the first switch module, and can control the opening or closing of the switch module.

When the charge and discharge circuit needs to enter the self-heating mode, the first switch module 41 is turned on, and when the charge and discharge circuit needs to exit the self-heating mode, the charge and discharge circuit can be disconnected by disconnecting the first switch module 41 so as to exit the self-heating mode, so that the charge and discharge circuit can be conveniently caused to exit the self-heating mode by disconnecting the first switch module 41.

In some embodiments, the inductance adjustment device 4 comprises a plurality of series-connected inductors, and referring to FIG. 4, the inductance adjustment device 4 comprises n series-connected inductors, namely L1, L2, L3, … … and Ln, wherein n is an integer and n is equal to or greater than 2; the dual-motor control device further comprises at least one second switch module 42, the second switch module 42 is connected with at least one inductor in parallel, and the on-off control end of the second switch module 42 is respectively connected with at least one of the first motor control device 2 and the second motor control device 3.

When the second switch module 42 is turned on, the inductance connected in parallel with the second switch module can be short-circuited, so that the number of the inductances connected into the charge-discharge circuit can be adjusted, and the inductance in the charge-discharge circuit can be adjusted.

Referring to fig. 5, in some embodiments, the at least one second switch module 42 corresponds to a plurality of serially connected inductors, each second switch module 42 is connected in parallel to a corresponding inductor, and an on-off control end of each second switch module 42 is connected to at least one of the first motor control device 2 and the second motor control device 3.

Each inductor is connected with a second switch module 42 in parallel, so that the number of the inductors connected into the charge-discharge circuit can be adjusted more flexibly, and the flexible adjustment of the inductance in the charge-discharge circuit is realized.

In some embodiments, the inductance adjustment device comprises a plurality of parallel branches, and at least one third switch module 43 and at least one inductance are connected in series in each branch, and the on-off control end of the third switch module 43 is respectively connected with at least one of the first motor control device and the second motor control device.

Referring to FIG. 6, the inductance adjusting device comprises m parallel branches, wherein m is an integer and m is equal to or greater than 2;

when the inductance in a certain branch is not needed, the third switch module 43 in the branch can be disconnected, when the inductance in a certain branch is needed, the third switch module 43 in the branch can be conducted, and the flexible adjustment of inductance in the charge-discharge circuit can be realized by controlling the on and off of the third switch module 43 in each branch.

Referring to fig. 7, in some embodiments, the inductance adjusting device further includes a first branch connected in parallel with any branch, where the first branch includes a fourth switch module 44, and on-off control ends of the fourth switch module 44 are connected to at least one of the first motor control device 2 and the second motor control device 3, respectively. When the fourth switch module 44 in the first branch is turned on, the entire inductance adjusting device can be completely shorted, so that the inductance in the charge-discharge circuit can be adjusted more flexibly.

Any one of the first, second, third, and fourth switching modules 41, 42, 43, and 44 may be a switching function component such as a relay, for example.

In some embodiments, the dual motor control apparatus may further include a cooling device 5 disposed in the case 1, and the case 1 is provided with a cooling medium inlet 51 and a cooling medium outlet 52 communicating with the cooling device 5. The cooling medium enters the cooling device 5 through the cooling medium inlet 51, and the cooling medium in the cooling device 5 is discharged to the outside of the case 1 from the cooling medium outlet 52, thereby realizing the heat radiation function.

The cooling device 5 is favorable for radiating the heat of the box body 1, so that the heat generated by the first motor control device 2 and the second motor control device 3 is radiated, the heat radiation performance is good, and the probability of failure of the motor control device caused by heat accumulation is effectively reduced.

The cooling device 5 is disposed in the casing 1, for example, may be disposed between the first motor control device 2 and the inner side surface of the casing 1, or may be disposed between the second motor control device 3 and the inner side surface of the casing 1, or may be disposed at a position between the first motor control device 2 and the second motor control device 3, and the specific disposition position may be selected according to practical application requirements. The cooling device 5 may be, for example, a cooling tank, a cooling plate, a cooling layer, or the like, and may be specifically selected according to practical application requirements.

In some embodiments, at least one inductor is disposed on an outer surface of the cooling device, so that heat dissipation of the inductor can be effectively achieved, and damage to the inductor caused by accumulation of heat of the inductor is avoided.

In some embodiments, at least part of the outer surface of at least one inductor is coated with a heat conducting paste, and the heat conducting paste can effectively dissipate heat of the inductor, so that damage to the inductor caused by accumulation of heat of the inductor is avoided.

Referring to fig. 8, in some embodiments, the first motor control device 2 and the second motor control device 3 are respectively disposed at two sides of the cooling device 5 to be opposite to each other, so that heat dissipation can be uniformly performed on the first motor control device 2 and the second motor control device 3 at the same time, thereby further enhancing heat dissipation effect.

Referring to fig. 8, the cooling device 5 divides the case 1 into a first chamber 60 and a second chamber 61, the first motor control device 2 is provided in the first chamber 60, the second motor control device 3 is provided in the second chamber 61, the inductance adjustment device 4 is provided in one of the first chamber 60 and the second chamber 61, and in the embodiment shown in fig. 3, the inductance adjustment device 4 is provided in the second chamber 61. Therefore, the space layout in the box body 1 is further optimized, the full utilization of the space in the box body 1 is realized, and the whole box body is further reduced in size.

Referring to fig. 9, in some embodiments, the dual motor control apparatus further includes a first housing 63 and a second housing 64 disposed in the case 1, the first housing 63 and the second housing 64 being disposed opposite to each other on both sides of the cooling device 5, the first motor control device 2 being disposed in the first housing 63, the second motor control device 3 being disposed in the second housing 64, the inductance adjustment device 4 being disposed in one of the first housing 63 and the second housing 64, and in the example shown in fig. 5, the inductance adjustment device 4 being disposed in the second housing 64. In this way, a modular assembly of the first motor control device 2 and the second motor control device 3 is achieved, facilitating the installation of the first motor control device 2 and the second motor control device 3 inside the casing 1.

Specifically, the first motor control device 2 and the second motor control device 3 each include a circuit board, a copper bar and other devices, if the first motor control device 2 and the second motor control device 3 are directly installed in the box 1, the installation is inconvenient, the first motor control device 2 is arranged in the first shell 63, the second motor control device 3 is arranged in the second shell 64, the modular assembly of the first motor control device 2 and the second motor control device 3 is realized, and then the first shell 63 containing the first motor control device 2 and the second shell 64 containing the second motor control device 3 can be conveniently installed in the box 1, so that the installation operation is convenient.

In some embodiments, the cooling device 5 comprises at least one cooling tank; referring to fig. 8, the cooling device 5 includes a cooling tank which communicates with a cooling medium inlet 51 and a cooling medium outlet 52, respectively. The cooling box has the advantages of simple structure, small occupied space, convenient installation and use and good heat dissipation effect.

In some embodiments, at least one inductor is disposed on an outer surface of the cooling tank, so that heat dissipation of the inductor can be effectively achieved, and damage to the inductor caused by accumulation of heat of the inductor is avoided.

Illustratively, referring to fig. 10, the cooling device 5 includes two cooling tanks, namely, a first cooling tank 53 and a second cooling tank 54, respectively, the cooling medium inlet 51 includes a first sub-inlet 511 and a second sub-inlet 512, the cooling medium outlet 52 includes a first sub-outlet 521 and a second sub-outlet 522, the first cooling tank 53 communicates with the first sub-inlet 511 and the first sub-outlet 521, respectively, and the second cooling tank 54 communicates with the second sub-inlet 512 and the second sub-outlet 522, respectively.

Referring to fig. 11, in an example, an inductor 45 of the inductance adjusting device 4 is disposed on an outer surface of the first cooling tank 53, one end of the inductor 45 is disposed with the first motor neutral interface 142 through a copper bar fixing bolt 49, an inductor bottom shell 46 of the inductor 45 is fixed on an inner sidewall of the tank 1 through the inductor fixing bolt 47, a portion of the outer surface of the inductor 45 is a heat-conducting paste coated surface 48, and the heat-conducting paste coated surface 48 is coated with heat-conducting paste to facilitate heat dissipation.

For example, referring to fig. 12, a plurality of first spoiler columns 55 may be provided in the first cooling tank 51, and a plurality of second spoiler columns 56 may be provided in the second cooling tank 52. The turbulent flow column can reduce the flow rate of the cooling medium, so that the cooling medium can more fully absorb heat in the box body 1, and the heat dissipation effect is enhanced.

The cooling medium may be, for example, water or air. The cooling medium flows into the cooling device from the outside of the box 1 through the cooling medium inlet 51 under the action of an external power device such as a water pump and the like, flows out of the box 1 from the cooling medium outlet 52, takes away the heat in the box 1 and plays a role in heat dissipation. For example, water is pumped into the cooling tank through the cooling medium inlet 51 by a water pump, and the water in the cooling tank absorbs heat in the tank 1 and then flows out of the tank 1 through the cooling medium outlet 52, thereby achieving the effect of heat dissipation. When the cooling medium is air, the external power device can adopt an air pump, the air is pumped into the cooling box through the air pump, and the air flows out of the box body 1 after passing through the cooling box, so that heat in the box body 1 is taken away, and a heat dissipation effect is achieved.

In some embodiments, referring to fig. 13, the case 1 may include a case body 11, a first case cover 12 and a second case cover 13 disposed at opposite ends of the case body 11, a first electromagnetic shielding gasket 6 disposed between the first case cover 12 and the case body 11, and a second electromagnetic shielding gasket 7 disposed between the second case cover 13 and the case body 11. The electromagnetic shielding sealing ring can provide electromagnetic shielding function, and achieves better electromagnetic shielding effect.

In some embodiments, referring to fig. 14, a first motor three-phase interface 141 connected to the first motor control device and a second motor neutral interface 172 connected to the second motor control device are also provided on the wall of the case 1. The first motor control interface 14 includes a first motor three-phase interface 141 and a first motor neutral interface 142, and the second motor control interface 17 includes a second motor three-phase interface 171 and a second motor neutral interface 172. The wall of the box body 1 is provided with a first motor control interface 14, a first battery-powered positive electrode interface 15 and a first battery-powered negative electrode interface 16 which are respectively connected with the first motor control device 2, and a second motor control interface 17, a second battery-powered positive electrode interface 18 and a second battery-powered negative electrode interface 19 which are respectively connected with the second motor control device 3. The first motor control interface 14 facilitates connection of the first motor control device 2 to a first motor, and the battery powered first positive interface 15 and the battery powered first negative interface 16 facilitate connection of the first motor control device 2 to positive and negative poles of a power supply module, such as a battery or the like. The second motor control interface 17 facilitates connection of the second motor control device 3 to a second motor, and the battery powered second positive interface 18 and the battery powered second negative interface 19 facilitate connection of the second motor control device 3 to positive and negative poles of a power supply module, such as a battery or the like.

Referring to fig. 14, the first motor control interface 14 includes a first motor three-phase interface 141 and a first motor neutral line interface 142, the second motor control interface 17 includes a second motor three-phase interface 171 and a second motor neutral line interface 172, the first motor neutral line interface 142 is connected to the neutral line of the first motor, the second motor neutral line interface 172 is connected to the neutral line of the second motor, the first motor neutral line interface 142 is connected to the second end of the switch module provided inside the case 1, and the second motor neutral line interface 172 is connected to the third end of the switch module provided inside the case 1. The first motor neutral interface 142 is configured to connect to a first motor neutral, so that the first motor control device 2 is connected to the first motor neutral, and the second motor neutral interface 172 is configured to connect to a second motor neutral, so that the second motor control device 3 is connected to the second motor neutral. The first motor three-phase interface 141 facilitates the connection of the first motor control device 2 to the three-phase winding of the first motor, and the second motor three-phase interface 171 facilitates the connection of the second motor control device 3 to the three-phase winding of the second motor.

Referring to fig. 15, in one example, a first motor U-interface 1411, a first motor V-interface 1412, a first motor W-interface 1413, a first motor neutral interface 142, a battery powered first positive electrode interface 15, a battery powered first negative electrode interface 16, a cooling medium inlet 51, and a cooling medium outlet 52 are provided on one side wall of the case 1. The first motor three-phase interface 141 includes a first motor U-phase interface 1411, a first motor V-phase interface 1412, and a first motor W-phase interface 1413, the first motor U-phase interface 1411 being connected with a U-phase winding in the first motor, the first motor V-phase interface 1412 being connected with a V-phase winding in the first motor, the first motor W-phase interface 1413 being connected with a W-phase winding in the first motor.

Referring to fig. 16, a second motor U interface 1711, a second motor V interface 1712, a second motor W interface 1713, a second motor neutral interface 172, a battery powered second positive interface 18, and a battery powered second negative interface 19 are provided on the other side wall of the case 1. The second motor three-phase interface 171 includes a second motor U-phase interface 1711, a second motor V-phase interface 1712, and a second motor W-phase interface 1713, the second motor U-phase interface 1711 being connected to the U-phase winding in the second motor, the second motor V-phase interface 1712 being connected to the V-phase winding in the second motor, the second motor W-phase interface 1713 being connected to the W-phase winding in the second motor.

In some embodiments, any of the first motor control device 2 and the second motor control device 3 includes a motor control board, and three driving circuit boards and three power modules connected with the motor control board, respectively, the three driving circuit boards and the three power modules being connected one to one. Under the control of the motor control board, the driving circuit board can drive the power module connected with the driving circuit board to work, and the motor can be conveniently and rapidly controlled.

Referring to fig. 17 and 18, the structure diagram of fig. 17 shows the structure of the other side opposite to the side where the first motor control board 21 is located, and the structure diagram of fig. 18 shows the structure of the side where the first motor control board 21 is located. The first motor control device 2 includes a first motor control board 21, a first drive circuit board 22, a second drive circuit board 23, a third drive circuit board 24, a first power module 25, a second power module 26, and a third power module 27, which are connected to the motor control board 21, respectively. The first driving circuit board 22 is connected with the first power module 25, the second driving circuit board 23 is connected with the second power module 26, and the third driving circuit board 24 is connected with the third power module 27. The first motor control board 21 can control the first driving circuit board 22 to drive the first power module 25, control the second driving circuit board 23 to drive the second power module 26, and control the third driving circuit board 24 to drive the third power module 27.

Any motor control device in the first motor control device 2 and the second motor control device 3 further comprises an electromagnetic isolation plate, wherein the electromagnetic isolation plate is arranged between the motor control plate and the three driving circuit boards and isolates the motor control plate from the three driving circuit boards, so that the electromagnetic isolation effect is achieved, and electromagnetic interference between the motor control plate and the three driving circuit boards is reduced.

Referring to fig. 17 and 18, in a specific example, the electromagnetic isolation plate 8 in the first motor control device 2 is provided between the first motor control board 21 and the three drive circuit boards (the first drive circuit board 22, the second drive circuit board 23, and the third drive circuit board 24), and isolates the first motor control board 21 from the three drive circuit boards (the first drive circuit board 22, the second drive circuit board 23, and the third drive circuit board 24), thereby functioning as electromagnetic isolation and reducing electromagnetic interference. The case 1 is provided with a plurality of case mounting members 20 for facilitating fixing of the case 1 to a position to be fixed by means of bolts or the like.

Referring to fig. 17, the first motor control device 2 further includes a first positive output copper bar 151 of the first motor control device, a first negative output copper bar 152 of the first motor control device, a first power module output copper bar 153, a second power module output copper bar 154, a third power module output copper bar 155, a first neutral switching copper bar 156, a second neutral switching copper bar 157, a third neutral switching copper bar 158, a motor neutral output copper bar 159, a shielding magnetic ring 9, a first bus capacitor 10, a relay 28, a first current sensor 29, a second current sensor 30 and a third current sensor 31, the first motor control device 2 is connected with a positive electrode of a power supply module such as a battery through the first positive output copper bar 151 of the first motor control device, the first motor control device 2 is connected with a negative electrode of the power supply module such as the battery through the first negative output copper bar 152 of the first motor control device, the first power module 25, the third current sensor 31, the first power module output copper bar 153 and the first motor U-shaped interface 1 are sequentially connected with each other, and the second power module 26, the second motor sensor 30, the third power module output copper bar 29 and the third power module output copper bar 1413 are sequentially connected with each other through the first power module output copper bar 1413 and the third power output copper bar 1413. The first motor control device first positive output copper bar 151 is used for connecting the negative electrode of a power supply module such as a battery, and the first motor control device first negative output copper bar 152 is used for connecting the negative electrode of a power supply module such as a battery. The shielding magnetic ring 9 is arranged on the same side of the first positive electrode output copper bar 151, the first negative electrode output copper bar 152, the first power module output copper bar 153, the second power module output copper bar 154 and the third power module output copper bar 155 of the first motor control device, and is used for shielding electromagnetic interference. The third neutral line transfer copper bar 158, the second neutral line transfer copper bar 157, the first neutral line transfer copper bar 156, the repeater 28, and the motor neutral line output copper bar 159 are sequentially connected, and the first motor control device 2 is connected to the neutral line of the first motor through the motor neutral line output copper bar 159.

The structure of the second motor control device 3 is identical to that of the first motor control device 2.

Referring to fig. 19, the case 1 is provided with a cooling medium inlet 51, a cooling medium outlet 52, a first motor U-interface 1411, a first motor V-interface 1412, a first motor W-interface 1413, a first motor neutral line interface 142, a battery-powered first positive electrode interface 15, a battery-powered first negative electrode interface 16, a second motor U-interface 1711, a second motor V-interface 1712, a second motor W-interface 1713, a second motor neutral line interface 172, a battery-powered second positive electrode interface 18, and a battery-powered second negative electrode interface 19. The first motor neutral interface 142, the switch K4, the inductance adjustment device 4, and the second motor neutral interface 172 are connected in sequence. The switch K4 in the case 1 is used as a first switch module.

The first power module 25 in the first motor control device 2 comprises a first upper bridge arm and a first lower bridge arm which are connected in series, wherein the first upper bridge arm comprises a triode V1 and a freewheel diode D1 which are connected in parallel, and the first lower bridge arm comprises a triode V4 and a freewheel diode D4 which are connected in parallel; the second power module 26 in the first motor control device 2 comprises a second upper bridge arm and a second lower bridge arm which are connected in series, wherein the second upper bridge arm comprises a triode V2 and a freewheeling diode D2 which are connected in parallel, and the second lower bridge arm comprises a triode V5 and a freewheeling diode D5 which are connected in parallel; the third power module 27 in the first motor control device 2 includes a third upper bridge arm and a third lower bridge arm connected in series, the third upper bridge arm includes a triode V3 and a freewheel diode D3 connected in parallel, and the third lower bridge arm includes a triode V6 and a freewheel diode D6 connected in parallel. The first power module 36 in the second motor control device 3 comprises a fourth upper bridge arm and a fourth lower bridge arm which are connected in series, the fourth upper bridge arm comprises a triode V7 and a freewheeling diode D7 which are connected in parallel, and the fourth lower bridge arm comprises a triode V10 and a freewheeling diode D10 which are connected in parallel; the second power module 37 in the second motor control device 3 comprises a fifth upper bridge arm and a fifth lower bridge arm which are connected in series, wherein the fifth upper bridge arm comprises a triode V8 and a freewheel diode D8 which are connected in parallel, and the fifth lower bridge arm comprises a triode V11 and a freewheel diode D11 which are connected in parallel; the third power module 38 in the second motor control device 3 includes a sixth upper leg and a sixth lower leg connected in series, the sixth upper leg includes a transistor V9 and a freewheeling diode D9 connected in parallel, and the third lower leg includes a transistor V12 and a freewheeling diode D12 connected in parallel. The first motor control device 2 includes a first bus capacitor 10, and the second motor control device 3 includes a second bus capacitor 39.

The first motor U-phase interface 1411 is connected to the U-phase winding of the first motor, the first motor V-phase interface 1412 is connected to the V-phase winding of the first motor, and the first motor W-phase interface 1413 is connected to the W-phase winding of the first motor; the second motor U-phase interface 1711 connects the U-phase windings of the second motor, the second motor V-phase interface 1712 connects the V-phase windings of the second motor, and the second motor W-phase interface 1713 connects the W-phase windings of the second motor. The first motor neutral interface 142 connects to the neutral of the first motor and the second motor neutral interface 172 connects to the neutral of the second motor. The first motor control device 2 is connected with the first positive electrode interface 15 of battery power supply through a first positive electrode output copper bar 151 of the first motor control device, and is connected with the first negative electrode interface 16 of battery power supply through a first negative electrode output copper bar 152 of the first motor control device. The second motor control device 3 is connected with the battery-powered second positive electrode interface 18 through a first positive electrode output copper bar 161 of the second motor control device, and is connected with the battery-powered second negative electrode interface 19 through a first negative electrode output copper bar 162 of the second motor control device. The battery powered first positive interface 15 and the battery powered second positive interface 18 are both connected to the positive pole of the battery 100, and the battery powered first negative interface 16 and the battery powered second negative interface 19 are both connected to the negative pole of the battery 100.

By selectively turning on or off the respective arms, a circuit can be formed between the positive electrode of the battery 100, the first motor control device 2, the first motor, the second motor control device 3, and the negative electrode of the battery.

Referring to fig. 20, a dual motor control apparatus in one example includes a case 1, and a first motor control device 2, a second motor control device 3, and a switch module 4 (not shown in fig. 20) provided in the case 1; the first end of the switch module 4 may be connected to the first motor control device 2 and the second motor control device 3, respectively. A first cooling tank 53 and a second cooling tank 54 are provided in the tank 1. The box 1 may include a box body 11, a first box cover 12 and a second box cover 13 disposed at two ends of the box body 11, a first electromagnetic shielding sealing ring 6 is disposed between the first box cover 12 and the box body 11, and a second electromagnetic shielding sealing ring 7 is disposed between the second box cover 13 and the box body 11. The first motor control device 2 includes a first motor control board 21, a first driving circuit board 22, a second driving circuit board 23, a third driving circuit board 24, a first power module 25, a second power module 26, a third power module 27, a shielding magnetic ring 9, a first positive output copper bar 151 of the first motor control device, a first negative output copper bar 152 of the first motor control device, a first power module output copper bar 153, a second power module output copper bar 154, a third power module output copper bar 155, a first neutral line switching copper bar 156 and a second neutral line switching copper bar 157, which are respectively connected with the motor control board 21. The second motor control device 3 includes a first motor control board 32, a first driving circuit board 33, a second driving circuit board 34, a third driving circuit board 35, a first power module 36, a second power module 37, a third power module 38, a second bus capacitor 39, a second motor control device first positive output copper bar 161, and a second motor control device first negative output copper bar 162.

The foregoing description of various embodiments is intended to highlight differences between the various embodiments, which may be the same or similar to each other by reference, and is not repeated herein for the sake of brevity.

In a specific example, referring to fig. 2 to 20, a dual motor control apparatus includes a case 1, and a first motor control device 2, a second motor control device 3, a switch module 4, and a cooling device 5 provided in the case 1; the first end of the switch module 4 may be connected to the first motor control device 2 and the second motor control device 3, respectively. The case 1 is provided with a cooling medium inlet 51 and a cooling medium outlet 52 which communicate with the cooling device 5. The cooling device 5 includes a first cooling tank 53 and a second cooling tank 54, the cooling medium inlet 51 includes a first sub-inlet 511 and a second sub-inlet 512, the cooling medium outlet 52 includes a first sub-outlet 521 and a second sub-outlet 522, the first cooling tank 53 communicates with the first sub-inlet 511 and the first sub-outlet 521, respectively, and the second cooling tank 54 communicates with the second sub-inlet 512 and the second sub-outlet 522, respectively. A plurality of first spoiler columns 55 may be disposed in the first cooling tank 51, and a plurality of second spoiler columns 56 may be disposed in the second cooling tank 52.

The box 1 may include a box body 11, a first box cover 12 and a second box cover 13 disposed at two ends of the box body 11, a first electromagnetic shielding sealing ring 6 is disposed between the first box cover 12 and the box body 11, and a second electromagnetic shielding sealing ring 7 is disposed between the second box cover 13 and the box body 11.

The wall of the box body 1 is provided with a first motor control interface 14, a first battery-powered positive electrode interface 15 and a first battery-powered negative electrode interface 16 which are respectively connected with the first motor control device 2, and a second motor control interface 17, a second battery-powered positive electrode interface 18 and a second battery-powered negative electrode interface 19 which are respectively connected with the second motor control device 3.

The first motor control interface 14 includes a first motor three-phase interface 141 and a first motor neutral line interface 142, the second motor control interface 17 includes a second motor three-phase interface 171 and a second motor neutral line interface 172, the first motor neutral line interface 142 is connected to the neutral line of the first motor, the second motor neutral line interface 172 is connected to the neutral line of the second motor, the first motor neutral line interface 142 is connected to the second end of the switch module disposed inside the case 1, and the second motor neutral line interface 172 is connected to the third end of the switch module disposed inside the case 1.

A first motor U-interface 1411, a first motor V-interface 1412, a first motor W-interface 1413, a first motor neutral interface 142, a battery-powered first positive interface 15, a battery-powered first negative interface 16, a cooling medium inlet 51, and a cooling medium outlet 52 are provided on one side wall of the case 1. The first motor three-phase interface 141 includes a first motor U-phase interface 1411, a first motor V-phase interface 1412, and a first motor W-phase interface 1413, the first motor U-phase interface 1411 being connected with a U-phase winding in the first motor, the first motor V-phase interface 1412 being connected with a V-phase winding in the first motor, the first motor W-phase interface 1413 being connected with a W-phase winding in the first motor.

The other side wall of the box 1 is provided with a second motor U interface 1711, a second motor V interface 1712, a second motor W interface 1713, a second motor neutral line interface 172, a battery powered second positive electrode interface 18 and a battery powered second negative electrode interface 19. The second motor three-phase interface 171 includes a second motor U-phase interface 1711, a second motor V-phase interface 1712, and a second motor W-phase interface 1713, the second motor U-phase interface 1711 being connected to the U-phase winding in the second motor, the second motor V-phase interface 1712 being connected to the V-phase winding in the second motor, the second motor W-phase interface 1713 being connected to the W-phase winding in the second motor.

The first motor control device 2 includes a first motor control board 21, a first drive circuit board 22, a second drive circuit board 23, a third drive circuit board 24, a first power module 25, a second power module 26, and a third power module 27, which are connected to the motor control board 21, respectively. The first driving circuit board 22 is connected with the first power module 25, the second driving circuit board 23 is connected with the second power module 26, and the third driving circuit board 24 is connected with the third power module 27. The first motor control board 21 can control the first driving circuit board 22 to drive the first power module 25, control the second driving circuit board 23 to drive the second power module 26, and control the third driving circuit board 24 to drive the third power module 27.

The first motor control device 2 further comprises a first positive output copper bar 151 of the first motor control device, a first negative output copper bar 152 of the first motor control device, a first power module output copper bar 153, a second power module output copper bar 154, a third power module output copper bar 155, a first neutral line switching copper bar 156, a second neutral line switching copper bar 157, a third neutral line switching copper bar 158, a motor neutral line output copper bar 159, a shielding magnetic ring 9, a first bus capacitor 10, a relay 28, a first current sensor 29, a second current sensor 30 and a third current sensor 31, the first motor control device 2 is connected with a positive electrode of a power supply module such as a battery through the first positive output copper bar 151 of the first motor control device, the first motor control device 2 is connected with a negative electrode of the power supply module such as the battery through the first negative output copper bar 152 of the first motor control device, the first power module 25, the third current sensor 31, the first power module output copper bar 153 and the first motor U-shaped interface 1411 are sequentially connected, the second power module 26, the second current sensor 30, the second motor output copper bar 30 and the first power module output copper bar 154 are sequentially connected with the first motor 1411, and the first power module output copper bar 1413 are sequentially connected with the first power module output copper bar 1413. The first motor control device first positive output copper bar 151 is used for connecting the negative electrode of a power supply module such as a battery, and the first motor control device first negative output copper bar 152 is used for connecting the negative electrode of a power supply module such as a battery. The shielding magnetic ring 9 is arranged on the same side of the first positive electrode output copper bar 151, the first negative electrode output copper bar 152, the first power module output copper bar 153, the second power module output copper bar 154 and the third power module output copper bar 155 of the first motor control device, and is used for shielding electromagnetic interference. The third neutral line transfer copper bar 158, the second neutral line transfer copper bar 157, the first neutral line transfer copper bar 156, the repeater 28, and the motor neutral line output copper bar 159 are sequentially connected, and the first motor control device 2 is connected to the neutral line of the first motor through the motor neutral line output copper bar 159. The structure of the second motor control device 3 is identical to that of the first motor control device 2. The first motor control device 2 and the second motor control device 3 are arranged in the box body 1, so that the space utilization rate is optimized, the occupied space is reduced, and the installation and the placement are convenient. The cooling medium enters the cooling device 5 through the cooling medium inlet 51, and the cooling medium in the cooling device 5 is discharged to the outside of the case 1 from the cooling medium outlet 52, thereby realizing the heat radiation function.

Another embodiment of the present application provides a charge and discharge device, including a power supply module, a first motor, a second motor, and a dual-motor control device according to any one of the foregoing embodiments, where a positive electrode interface and a negative electrode interface of the dual-motor control device are respectively connected to a positive electrode and a negative electrode of the power supply module; the first neutral line interface and the second neutral line interface of the double-motor control device are respectively connected with the neutral line of the first motor and the neutral line of the second motor; the first motor winding interface of the double-motor control device is connected with a winding of the first motor; the second motor winding interface of the double motor control device is connected with the winding of the second motor.

Referring to fig. 21, in this embodiment, the power supply module is a battery 100, and the dual motor control apparatus 200 may be the dual motor control apparatus in any of the above embodiments; the positive electrode interfaces of the double-motor control device 200 comprise a battery-powered first positive electrode interface 15 and a battery-powered second positive electrode interface 18, the negative electrode interfaces of the double-motor control device 200 comprise a battery-powered first negative electrode interface 16 and a battery-powered second negative electrode interface 19, the battery-powered first positive electrode interface 15 and the battery-powered second positive electrode interface 18 are both connected with the positive electrode of the battery 100, and the battery-powered first negative electrode interface 16 and the battery-powered second negative electrode interface 19 are both connected with the negative electrode of the battery 100; the first neutral line interface of the double-motor control device is a first motor neutral line interface 142, the second neutral line interface of the double-motor control device is a second motor neutral line interface 172, the first motor neutral line interface 142 is connected with the neutral line of the first motor, and the second motor neutral line interface 172 is connected with the neutral line of the second motor; the first motor winding interface of the dual-motor control device comprises a first motor U-phase interface 1411, a first motor V-phase interface 1412 and a first motor W-phase interface 1413, wherein the first motor U-phase interface 1411, the first motor V-phase interface 1412 and the first motor W-phase interface 1413 are respectively connected with a U-phase winding, a V-phase winding and a W-phase winding of the first motor; the second motor winding interface of the dual motor control apparatus includes a second motor U-phase interface 1711, a second motor V-phase interface 1712, and a second motor W-phase interface 1713, the second motor U-phase interface 1711, the second motor V-phase interface 1712, and the second motor W-phase interface 1713 being connected to the U-phase winding, the V-phase winding, and the W-phase winding of the second motor, respectively.

The first motor control device and the second motor control device in the double-motor control device of the charging and discharging equipment provided by the embodiment of the application are arranged in the box body, so that the space utilization rate is optimized, the occupied space is reduced, and the charging and discharging equipment is convenient to install and place.

Another embodiment of the present application provides an electrical apparatus, including the charge-discharge device according to any one of the foregoing embodiments. The consumer may be, for example, a vehicle, a ship, an aircraft, or the like. The electric equipment that this application embodiment provided, first motor control device, second motor control device among its two motor control equipment set up in the box, have optimized space utilization, have reduced occupation space, are convenient for install and place.

It should be noted that: the foregoing examples merely represent embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the present application. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application shall be subject to the appended claims.

Claims

1. The double-motor control equipment is characterized by comprising a box body, a first motor control device, a second motor control device and an inductance adjusting device, wherein the first motor control device, the second motor control device and the inductance adjusting device are arranged in the box body; the wall of the box body is provided with a first motor neutral line interface and a second motor neutral line interface; the first end of the inductance adjusting device is connected with the first motor neutral line interface, and the second end of the inductance adjusting device is connected with the second motor neutral line interface; the inductance adjustment device comprises at least one inductance.

2. The dual motor control device of claim 1, further comprising a first switch module connected to a line between the first motor neutral interface and the second motor neutral interface, wherein an on-off control end of the first switch module is connected to at least one of the first motor control means and the second motor control means, respectively.

3. The dual motor control device of claim 1, wherein the inductance adjustment means comprises a plurality of series-connected inductances, the dual motor control device further comprising at least one second switch module connected in parallel with at least one of the inductances, the on-off control ends of the second switch modules being connected to at least one of the first motor control means and the second motor control means, respectively.

4. A dual motor control apparatus as claimed in claim 3, wherein said at least one second switching module is in one-to-one correspondence with said plurality of series-connected inductances, each of said second switching modules being connected in parallel with a respective corresponding inductance.

5. The dual motor control device according to claim 1, wherein the inductance adjustment means comprises a plurality of parallel branches, each branch being connected in series with at least one third switch module and at least one inductor, and an on-off control end of the third switch module is connected to at least one of the first motor control means and the second motor control means, respectively.

6. The dual motor control device of claim 5 wherein the inductance adjustment means further comprises a first branch connected in parallel with any of the branches, the first branch including a fourth switch module, the on-off control terminal of the fourth switch module being connected to at least one of the first motor control means and the second motor control means, respectively.

7. The dual motor control apparatus according to any one of claims 1 to 6, further comprising a cooling device, wherein the case is provided with a cooling medium inlet and a cooling medium outlet that communicate with the cooling device.

8. The dual motor control device of claim 7 wherein at least one of said inductors is disposed on an outer surface of said cooling apparatus.

9. The dual motor control device of any one of claims 1 to 6 wherein at least a portion of an outer surface of at least one of the inductors is coated with a thermally conductive paste.

10. The dual motor control apparatus according to claim 7, wherein the first motor control device and the second motor control device are disposed opposite to each other on both sides of the cooling device, respectively.

11. The dual motor control apparatus according to claim 7, wherein the cooling device divides the case into a first chamber in which the first motor control device is disposed and a second chamber in which the second motor control device is disposed, the inductance adjusting device being disposed in one of the first chamber and the second chamber.

12. The dual-motor control apparatus according to claim 7, further comprising a first housing and a second housing disposed in the case, the first housing and the second housing being disposed opposite to each other on both sides of the cooling device, the first motor control device being disposed in the first housing, the second motor control device being disposed in the second housing, the inductance adjusting device being disposed in one of the first housing and the second housing.

13. The dual motor control apparatus of claim 7 wherein the cooling device comprises at least one cooling tank; the cooling tank is respectively communicated with the cooling medium inlet and the cooling medium outlet.

14. The dual motor control apparatus according to claim 13, wherein a spoiler column is provided in the cooling tank.

15. The dual motor control apparatus according to any one of claims 1 to 6, wherein the case includes a case body, a first case cover and a second case cover disposed opposite to each other at both ends of the case body, an electromagnetic shielding seal ring is provided between the first case cover and the case body, and an electromagnetic shielding seal ring is provided between the second case cover and the case body.

16. The dual motor control device of any one of claims 1 to 6, wherein a first motor three-phase interface, a battery-powered first positive electrode interface and a battery-powered first negative electrode interface, which are respectively connected with the first motor control device, and a second motor three-phase interface, a battery-powered second positive electrode interface and a battery-powered second negative electrode interface, which are respectively connected with the second motor control device, are further provided on a wall of the case.

17. The dual motor control apparatus according to any one of claims 1 to 6, wherein any one of the first motor control device and the second motor control device includes a motor control board, and three drive circuit boards and three power modules connected to the motor control board, respectively, the three drive circuit boards and the three power modules being connected one-to-one.

18. The dual motor control device of claim 17 wherein any motor control means further comprises an electromagnetic separator plate disposed between the motor control board and the three drive circuit boards, separating the motor control board from the three drive circuit boards.

19. A charge-discharge device, comprising a power supply module, a first motor, a second motor, and the dual-motor control device of any one of claims 1-18, wherein a positive electrode interface and a negative electrode interface of the dual-motor control device are respectively connected with a positive electrode and a negative electrode of the power supply module; the first neutral line interface and the second neutral line interface of the double-motor control device are respectively connected with the neutral line of the first motor and the neutral line of the second motor; a first motor winding interface of the dual-motor control device is connected with a winding of the first motor; the second motor winding interface of the dual motor control device is connected with the winding of the second motor.

20. A powered device comprising the charging and discharging apparatus of claim 19.