WO2024037309A1 - 电动总成和具有其的车辆 - Google Patents

电动总成和具有其的车辆 Download PDF

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Publication number
WO2024037309A1
WO2024037309A1 PCT/CN2023/109765 CN2023109765W WO2024037309A1 WO 2024037309 A1 WO2024037309 A1 WO 2024037309A1 CN 2023109765 W CN2023109765 W CN 2023109765W WO 2024037309 A1 WO2024037309 A1 WO 2024037309A1
Authority
WO
WIPO (PCT)
Prior art keywords
capacitor
water channel
cavity
electric assembly
line
Prior art date
Application number
PCT/CN2023/109765
Other languages
English (en)
French (fr)
Inventor
张星春
喻凤传
Original Assignee
比亚迪股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 比亚迪股份有限公司 filed Critical 比亚迪股份有限公司
Publication of WO2024037309A1 publication Critical patent/WO2024037309A1/zh

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
    • B60L58/27—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by heating
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00—Details of semiconductor or other solid state devices
    • H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
    • H01L23/36—Selection of materials, or shaping, to facilitate cooling or heating, e.g. heatsinks
    • H01L23/367—Cooling facilitated by shape of device
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00—Details of semiconductor or other solid state devices
    • H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
    • H01L23/46—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements involving the transfer of heat by flowing fluids
    • H01L23/473—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements involving the transfer of heat by flowing fluids by flowing liquids
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/615—Heating or keeping warm
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/657—Means for temperature control structurally associated with the cells by electric or electromagnetic means
    • H01M10/6571—Resistive heaters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/01—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for shielding from electromagnetic fields, i.e. structural association with shields
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/30—Structural association with control circuits or drive circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/30—Structural association with control circuits or drive circuits
    • H02K11/33—Drive circuits, e.g. power electronics
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K13/00—Structural associations of current collectors with motors or generators, e.g. brush mounting plates or connections to windings; Disposition of current collectors in motors or generators; Arrangements for improving commutation

Definitions

  • the present disclosure relates to the field of vehicle technology, and in particular, to an electric assembly and a vehicle having the same.
  • PTC Positive Temperature Coefficient
  • the present disclosure aims to solve at least one of the technical problems existing in the prior art.
  • one purpose of the present disclosure is to propose an electric assembly that can not only realize self-heating of the battery pack, but also reuse the three-phase windings of the motor and the electronic control module in the self-heating circuit of the battery pack.
  • the bridge arm has the advantages of low cost, small size and low number of parts.
  • the present disclosure also proposes a vehicle having the above-mentioned electric assembly.
  • an electric assembly which includes: a box including an electronic control cavity; an N-line connection component, one end of the N-line connection component is suitable for Connected between two series-connected battery packs; a motor, the motor includes a three-phase winding, one end of the three-phase winding is a junction, and the junction is connected to the other end of the N line connecting component ; Electrical control module, the electrical control module is installed in the electrical control cavity, the electrical control module includes an IGBT module, the IGBT module includes a three-phase bridge arm, and the other ends of the three-phase windings are connected respectively to the midpoint of the three-phase bridge arm; and a DC connector, the positive electrode of the DC connector is connected to the junction, the negative electrode of the DC connector is connected to the IGBT module, and is suitable for connection The negative electrode of the battery pack.
  • the electric assembly according to the embodiment of the present disclosure can not only realize self-heating of the battery pack, but also reuse the three-phase winding of the motor and the bridge arm of the electronic control module in the self-heating circuit of the battery pack, which has the advantages of low cost, small size and Advantages include low number of parts.
  • the electric assembly further includes: a first capacitor, the first capacitor is installed in the electronic control cavity and is an X capacitor, and one end of the first capacitor is connected to the DC connection The positive terminal of the plug-in is connected and the other end is connected to the negative terminal of the DC connector.
  • the electric assembly further includes: a second capacitor, the second capacitor is installed in the electronic control cavity and is an X capacitor, and one end of the second capacitor is connected to the first The one end of the capacitor is connected and the other end is connected to the positive electrode of the DC connector; a second capacitor contactor, one end of the second capacitor contactor is connected to the one end of the second capacitor and the second The other end of the capacitive contactor is connected to the one end of the three-phase winding.
  • the first capacitor is an X1 capacitor
  • the second capacitor is an X2 capacitor
  • the electric assembly further includes: a boost capacitor installed in the electronic control cavity, and one end of the boost capacitor is connected to the negative electrode of the DC connector , the other end of the boost capacitor is connected to the other end of the three-phase winding.
  • the electric assembly further includes: a capacitor housing, in which the first capacitor, the second capacitor and the boost capacitor are integrated.
  • the electric assembly further includes: a negative output copper bar, the negative output copper bar is installed on the capacitor housing, and the first capacitor and the second capacitor share the negative electrode. Output copper bar.
  • the capacitor housing is provided with a plurality of wire harness fixing slots, and at least part of the plurality of wire harness fixing slots are provided on the above the second capacitor.
  • the capacitor housing is provided with a plurality of tie holes, and at least part of the tie holes is provided above the boost capacitor.
  • the electric assembly further includes: a positive fuse, the positive fuse is installed in the electronic control cavity, one end of the positive fuse is connected to the positive electrode of the DC connector, and the other end of the positive fuse is connected to the positive electrode of the DC connector. Connected to the upper bridge arm of each phase of the bridge arm; and a negative fuse, the negative fuse is installed in the electronic control cavity, and the negative fuse is located below the positive fuse, one end of the negative fuse is connected to The negative pole of the DC connector is connected and the other end is connected to the lower bridge arm of the bridge arm of each phase.
  • the electric assembly further includes: a power module, the box further includes a power cavity, the power cavity is located below the electronic control cavity, and the power module is provided in the power cavity.
  • a bracket is provided in the box, and the bracket separates the box into the upper electronic control cavity and the lower power cavity, and the bracket is provided with A plurality of shielding ribs extend toward the power cavity, and the shielding ribs form a shielding cavity, and the shielding cavity is used to install components forming the power module.
  • the box further includes a bottom plate, and the bottom plate is used to block the opening below the power supply cavity.
  • the motor includes: a casing, the three-phase winding is provided in the casing; an end cover, the end cover is provided at one end of the casing and used to seal the In the casing, the end cover is provided with an opening for the N line connecting component to pass through.
  • the N line connection component includes: an N line, one end of the N line is connected to the one end of the three-phase winding; an N line adapter, the N line adapter One end of the N line adapter is connected to the one end of the N line; the N line nose is connected to one end of the N line nose after the other end of the N line adapter passes through the opening; and the N line wiring holder, one end of the N-line connection holder is connected to the other end of the N-line, and the other end of the N-line connection holder is connected to the N-line copper bar of the electronic control module, and the N-line copper bar is passed through There is a Hall, which is connected to the electronic control module through a signal line.
  • an end of the casing close to the end cover is provided with a plug-in slot, the plug-in slot is arranged close to the electronic control cavity, and the N-wire terminal is inserted into the plug-in slot. slot and fixedly connected with the casing.
  • the electric assembly further includes: a water channel cover, the water channel cover is provided with a first water channel, the electronic control cavity is provided with a second water channel and a third water channel, the water channel is The cover is connected to the box and covers the second water channel and the third water channel.
  • the first water channel is connected to the second water channel and the third water channel respectively.
  • the second water channel is suitable for connecting with the inlet.
  • the water pipes are connected, and the third water channel is suitable for communicating with the water outlet pipe; wherein, the cooling liquid in the second water channel flows into the first water channel to dissipate heat for the IGBT module, and the cooling liquid in the first water channel flows into The third water channel dissipates heat for the power module.
  • the electric assembly further includes: a sealing ring, the water channel cover is provided with a sealing groove surrounding the first water channel, the sealing ring is disposed in the sealing groove, and the The IGBT module presses the sealing ring tightly, and the sealing ring fills the gap between the water channel cover plate and the IGBT module.
  • the third water channel includes: a transition section connected to the first water channel; an annular section surrounding the power module and dissipating heat for the power module, One end of the annular section is connected to the other end of the transition section and the other end is provided with a water outlet; wherein the depth of the annular section is greater than the depth of the second water channel and the depth of the transition section.
  • the power module includes: a power board, the power board is installed in the power cavity, and a plurality of devices are installed on the power board; the plurality of devices include: A transformer and a transformer inductor, the transformers and the transformer inductor are arranged at intervals; a plurality of MOS tubes, the plurality of MOS tubes are arranged on opposite sides of the transformer and the transformer inductor; and an AC inductor and a DC inductor, the The AC inductor and the DC inductor are respectively arranged on opposite sides of the transformer and the transformer inductor; wherein, the third water channel surrounds the transformer and the transformer inductor, and a plurality of MOS tubes are located on the third The opposite sides of the water channel exchange heat with the third water channel.
  • the power supply cavity is provided with a plurality of MOS tube cavities, an AC inductor cavity and a DC inductor cavity, the AC inductor extends into the AC inductor cavity, and the DC inductor extends into the DC inductor cavity.
  • a plurality of the MOS tubes extend into a plurality of the MOS tube cavities in one-to-one correspondence.
  • the electronic control module includes: a control board; and a drive board, the drive board is provided below the control board.
  • the IGBT module is installed on the driving board, and the IGBT module is connected to the control board.
  • the electric assembly also includes: a shielding plate located between the driving board and the control board.
  • a vehicle including the electric assembly according to the first embodiment of the present disclosure.
  • a vehicle according to an embodiment of the second aspect of the present disclosure by utilizing the electric assembly according to the embodiment of the first aspect of the present disclosure, can not only realize self-heating of the battery pack, but also be multiplexed in the self-heating circuit of the battery pack It eliminates the three-phase winding of the motor and the bridge arm of the electronic control module, and has the advantages of low cost, small size and few parts.
  • Figure 1 is a schematic structural diagram of an electric assembly according to an embodiment of the present disclosure.
  • Figure 2 is an exploded view of an electric assembly according to an embodiment of the present disclosure.
  • FIG. 3 is an exploded view of the electronic control cavity of the box of the electric assembly according to an embodiment of the present disclosure.
  • FIG. 4 is a schematic structural diagram of a capacitor housing of an electric assembly according to an embodiment of the present disclosure.
  • FIG. 5 is a schematic structural diagram of the electronic control cavity of the box of the electric assembly according to an embodiment of the present disclosure.
  • FIG. 6 is an exploded view of a power supply cavity of a box of an electric assembly according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic structural diagram of the power supply cavity of the box of the electric assembly according to an embodiment of the present disclosure.
  • FIG. 8 is a cross-sectional view of an electric assembly according to an embodiment of the present disclosure.
  • FIG. 9 is a cross-sectional view of the electric assembly from another perspective according to an embodiment of the present disclosure.
  • Figure 10 is a schematic structural diagram of a water channel cover of an electric assembly according to an embodiment of the present disclosure.
  • FIG. 11 is a circuit schematic diagram of an electric assembly according to an embodiment of the present disclosure.
  • FIG. 12 is a schematic layout diagram of an electronic control cavity of an electric assembly according to an embodiment of the present disclosure.
  • Figure 13 is a schematic block diagram of a vehicle according to an embodiment of the present disclosure.
  • the electric assembly 1 includes a box 100, an N line connection component 250, and a motor. 200.
  • the box 100 includes an electronic control cavity 110 .
  • the motor 200 includes a three-phase winding 210.
  • One end 2101 of the three-phase winding 210 is a junction end.
  • the junction end is connected to an N-line connection component 250.
  • One end 2501 of the N-line connection component 250 is suitable for connecting to two battery packs 2 connected in series. between.
  • the electrical control module 300 is installed in the electrical control cavity 110 , and the electrical control module 300 includes an IGBT module 340 .
  • the electronic control module 300 includes a driving board 310 and a control board 320.
  • the driving board 310 is provided below the control board 320.
  • a shielding plate 330 is also provided between the driving board 310 and the control board 320 .
  • the IGBT module 340 is provided on the drive board 310, and the IGBT module 340 is connected to the control board 320.
  • the IGBT module 340 includes a three-phase bridge arm 350, and the other end 2102 of the three-phase winding 210 is respectively connected to the midpoint of the three-phase bridge arm 350.
  • the positive electrode 4001 of the DC connector 400 is connected to the junction, for example, the positive electrode 4001 of the DC connector 400 is connected to the three-phase upper bridge arm 351, and the negative electrode 4002 of the DC connector 400 is connected to the IGBT module 340 and is suitable for connecting to the battery pack 2
  • the negative electrode, such as the negative electrode 4002 of the DC connector 400 is connected to the three-phase lower arm 352 .
  • the above-mentioned other ends 2102 of the three-phase winding 210 are respectively connected to the midpoints of the three-phase bridge arms 350 , which means that the above-mentioned other ends 2102 of the three-phase windings 210 are respectively connected to the upper bridge arms of the three-phase bridge arms 350 . 351 and the lower bridge arm 352, rather than the middle position where the other end 2102 of the three-phase winding 210 is connected to the three-phase bridge arm 350 respectively.
  • the electric control module 300 is installed in the electric control cavity 110.
  • the electric control module 300 includes a drive board 310 and a control board 320.
  • the drive board 310 is provided below the control board 320, and
  • a shielding plate 330 is also provided between the driving board 310 and the control board 320.
  • the shielding plate 330 can attenuate the electromagnetic interference of the driving board 310 on the control board 320, avoid fluctuations in the control signal of the control board 320, and improve the accuracy of the control signal of the control board 320. reliability.
  • the IGBT module 340 is provided on the driving board 310.
  • the IGBT module 340 includes a three-phase bridge arm 350.
  • the IGBT module 340 is connected to the control board 320.
  • each phase bridge arm 350 is It includes an upper bridge arm 351 and a lower bridge arm 352.
  • the three-phase upper bridge arm 351 is connected to the first control interface of the control board 320 after being joined together, and the three-phase lower bridge arm 352 is connected to the second control interface of the control board 320 after being joined together. .
  • the three-phase upper bridge arms 351 are all controlled by the electrical signals sent by the first control interface, the three-phase upper bridge arms 351 will be turned on or off at the same time. Since the three-phase lower bridge arms 352 are all controlled by the electrical signals sent by the second control interface, the three-phase lower bridge arms 352 will be turned on or off at the same time, and the state of the three-phase upper bridge arm 351 is different from that of the three-phase lower bridge arm.
  • the states of the arms 352 may remain opposite, that is, the electrical signals of the first control interface and the electrical signals of the second control interface may be opposite.
  • the motor 200 is a three-phase motor, and the motor 200 can be a drive motor or a generator.
  • the three-phase winding 210 is applied to the electric assembly 1, and the three-phase winding 210 is connected to the three-phase bridge arm 350 in a one-to-one correspondence. , can reduce the probability of ripple current in the circuit of the electric assembly 1, ensure the stability of the heating voltage and charging voltage of the battery pack 2, and improve the power quality.
  • one end 2101 of the three-phase winding 210 is a junction end, and the junction end is connected to an N-line connection component 250.
  • One end 2501 of the N-line connection component 250 is suitable for being connected between two series-connected battery packs 2.
  • the other end 2102 of the three-phase winding 210 is connected to the midpoint of the three-phase bridge arm 350 respectively, the positive electrode 4001 of the DC connector 400 is connected to the three-phase upper bridge arm 351, and the negative electrode 4002 of the DC connector 400 is connected to the three-phase lower bridge arm. 352.
  • the positive electrode 4001 of the DC connector 400 is connected to the positive electrodes of the two battery packs 2 connected in series, and the negative electrode 4002 of the DC connector 400 is connected to the negative electrodes of the two battery packs 2 connected in series.
  • the upper bridge arm 351 when the upper bridge arm 351 is turned on and the lower bridge arm 352 is turned off, one of the two battery packs 2 is discharged, and a loop is formed through the IGBT of the upper bridge arm 351, and the two batteries
  • the current of the above-mentioned battery pack in pack 2 charges the three-phase winding 210 through the upper bridge arm 351.
  • the three-phase winding 210 freewheels to charge the other battery pack of the two battery packs 2, and then forms a loop through the diode of the lower bridge arm 352.
  • the two battery packs 2 charge and discharge each other through current oscillation, causing the internal resistances of the two battery packs 2 to heat up, thereby realizing self-heating of the battery packs 2 .
  • the current amount between the junction point of the three-phase winding 210 and the battery pack 2 can be monitored through Hall.
  • the battery pack 2 can self-heat, which can not only improve the power supply efficiency of the battery pack 2.
  • the battery pack 2 can self-heat, so that the battery pack 2 can maintain high-efficiency power supply. working state, and when the battery pack 2 is charging, the battery pack 2 can self-heat first, thereby improving the charging efficiency.
  • the electric assembly 1 does not require an additional PTC heating element, which reduces the cost, volume, and number of parts.
  • the electric assembly 1 of the present disclosure The power consumption of the battery pack 2 is smaller, which is beneficial to improving the battery life of the vehicle.
  • the self-heating circuit of the battery pack 2 reuses the three-phase winding 210 of the motor 200 and the bridge arm 350 of the electronic control module 300, which improves the parts utilization rate of the electric assembly 1 and reduces the number of parts. 1 is smaller and less expensive.
  • the electric assembly 1 can not only realize self-heating of the battery pack 2, but also reuse the three-phase winding 210 of the motor 200 and the bridge arm of the electronic control module 300 in the self-heating circuit of the battery pack 2 350, which has the advantages of low cost, small size and low number of parts.
  • the electric assembly 1 also includes a first capacitor 500.
  • the first capacitor 500 is installed in the electronic control cavity 110 and is an X capacitor.
  • the first capacitor 500 It is located between the DC connector 400 and the electric control module 300 in the first direction.
  • the electric control module 300 extends along the second direction. The first direction and the second direction are orthogonal.
  • One end 5001 of the first capacitor 500 is connected to the DC connector 400
  • the positive terminal 4001 is connected and the other end 5002 is connected to the negative terminal 4002 of the DC connector 400 .
  • the current of the battery pack 2 will pass through the DC connector 400 and the first capacitor 500.
  • the first capacitor 500 absorbs the ripple current output by the battery pack 2 and affects the battery pack.
  • the output current of 2 is filtered to ensure the stability of the voltage supply to bridge arm 350;
  • the current input to the battery pack 2 will first pass through the first capacitor 500.
  • the first capacitor 500 can absorb the ripple current in the current input to the battery pack 2, so that the current flowing to the battery pack 2 The charging voltage is stable.
  • the overall distance between the first capacitor 500, the DC connector 400 and the electronic control module 300 is smaller, the first capacitor 500, the DC connector 400 and the electronic control module 300 are more compact, and the first capacitor 500, DC connector
  • the connection between 400 and the electronic control module 300 is more convenient, the wiring distance is smaller, and the electrical connection reliability is higher, thereby improving the integration of the electric assembly 1, and the volume of the electronic control cavity 110 can be smaller.
  • the size of the electric assembly 1 is also reduced.
  • the electric assembly 1 further includes a second capacitor 600 and a second capacitor contactor 610 .
  • the second capacitor 600 is installed in the electrical control cavity 110 and is an X capacitor.
  • the second capacitor 600 is located between the DC connector 400 and the electrical control module 300 in the first direction.
  • the second capacitor 600 is located above the first capacitor 500 , one end 6001 of the second capacitor 600 is connected to the one end 5001 of the first capacitor 500 and the other end 6002 is connected to the positive electrode 4001 of the DC connector 400 .
  • the second capacitive contactor 610 is installed in the electrical control cavity 110.
  • the second capacitive contactor 610 is located between the inner wall of the electrical control cavity 110 and the electrical control module 300 in the second direction.
  • the second capacitive contactor 610 is in the second direction.
  • one end 6101 of the second capacitor contactor 610 is connected to one end 6001 of the second capacitor 600 and the other end 6102 of the second capacitor contactor 610 is connected to the three-phase winding.
  • One end of 210 is connected to 2101.
  • the first capacitor 500 and the second capacitor 600 are connected in series, and the first capacitor 500 and the second capacitor 600 in series are connected to the positive electrode 4001 and the negative electrode 4002 of the DC connector 400.
  • the first capacitor 500 and the second capacitor 600 can Together they play the role of absorbing ripple current to achieve battery pack 2
  • the second capacitor 600 can be used to eliminate differential mode interference.
  • the second capacitor contactor 610 it can be controlled whether the second capacitor 600 is connected to the sink end of the three-phase winding 210.
  • the second capacitor contactor 610 can be turned on to connect the second capacitor 600 with the connecting end of the three-phase winding 210, so that the second capacitor 600 can absorb the three-phase
  • the effect of the differential mode current between the junction end of the winding 210 and the battery pack 2 is to reduce the high-frequency differential mode current component between the positive and negative poles of the DC connector 400 and reduce the magnetic ring's frequency at a certain frequency as much as possible. Risk of high frequency current saturation.
  • the overall distance between the second capacitor 600, the second capacitor contactor 610, the first capacitor 500, the DC connector 400 and the electronic control module 300 is smaller.
  • the DC connector 400 and the electric control module 300 are more compact, and the connection between the second capacitor 600, the second capacitor contactor 610, the first capacitor 500, the DC connector 400 and the electric control module 300 is more convenient.
  • the wiring distance is smaller and the electrical connection reliability is higher, thereby improving the integration level of the electric assembly 1, the volume of the electronic control cavity 110 can be smaller, and the volume of the electric assembly 1 is also reduced.
  • the first capacitor 500 is an X1 capacitor
  • the second capacitor 600 is an X2 capacitor.
  • the high voltage resistance of the first capacitor 500 is 2.5KV ⁇ 4KV
  • the high voltage resistance of the second capacitor 600 is no more than 2.5KV.
  • the first capacitor 500 is a capacitor with a voltage stabilizing and filtering function when the battery pack 2 supplies power to the IGBT of the bridge arm 350 of the control unit.
  • the IGBT When the vehicle is running, the IGBT has a relatively large power when converting current, so the first capacitor 500 has a high voltage resistance range. Need to be higher.
  • the second capacitor 600 is used to absorb the differential mode current on the N line 252 when the battery pack 2 self-heats. It can be seen from Figures 1 to 11 that the second capacitor 600 is connected to the N line 252 through the second capacitor contactor 610. When the battery pack 2 is self-heating, the N line 252 is conductive. The self-heating power of the battery pack 2 does not have the power of the IGBT when the vehicle is running. The power is high when the conversion current is medium, so the high voltage withstand range of the second capacitor 600 may be smaller than the high voltage withstand range of the first capacitor 500 .
  • the electric assembly 1 further includes a negative output copper bar 510 , and the first capacitor 500 and the second capacitor 600 share the negative output copper bar 510 .
  • the electric assembly 1 further includes a negative output copper bar 510 , and the first capacitor 500 and the second capacitor 600 share the negative output copper bar 510 .
  • the negative copper bar of the first capacitor 500 can be connected to the negative copper bar of the DC bus
  • the positive copper bar of the second capacitor 600 can be connected to the positive copper bar of the DC bus.
  • the electric assembly 1 also includes a boost capacitor 700.
  • the boost capacitor 700 is installed in the electronic control cavity 110.
  • the capacitor 700 is located on the side of the first capacitor 500 facing away from the second capacitor contactor 610 in the second direction.
  • One end 7001 of the boost capacitor 700 is connected to the negative electrode 4002 of the DC connector 400, and the other end 7002 of the boost capacitor 700 It is connected to the other end 2102 of the three-phase winding 210 . That is to say, the two ends of the boost capacitor 700 are respectively connected to the positive electrode and the negative electrode of the charging device (such as a charging pile or charging cabinet) that charges the battery pack 2 .
  • the charging device such as a charging pile or charging cabinet
  • the first capacitor 500, the second capacitor 600 and the three-phase winding 210 form an L/C circuit.
  • the boost capacitor 700 can absorb the ripple current and filter the input current of the charging device to stabilize the voltage input from the charging device to the electric assembly 1 .
  • the electric assembly 1 further includes a capacitor housing 3 in which the first capacitor 500 , the second capacitor 600 and the boost capacitor 700 are integrated.
  • the distance between the boost capacitor 700, the second capacitor 600 and the first capacitor 500 is closer, and the boost capacitor 700, the second capacitor 600 and the first capacitor 500 can be disassembled and assembled simultaneously, simplifying the disassembly and assembly. process, and the integration level of the electric assembly 1 is improved, the volume of the electronic control cavity 110 can be smaller, and the volume of the electric assembly 1 is also reduced.
  • first capacitor 500 and the second capacitor 600 can share the negative output copper bar 510 and can share a heat dissipation device, which facilitates heat dissipation and wiring harness connection, saving space and cost.
  • the capacitor housing 3 is provided with a plurality of wire harness fixing slots 910 , and at least part of the plurality of wire harness fixing slots 910 is provided above the second capacitor 600 . That is to say, a plurality of wire harness fixing slots 910 can be provided above the second capacitor 600.
  • the wire harness connected to the second capacitor 600 can pass through the wire harness fixing slots 910 after being led out from the second capacitor 600.
  • the wire harness fixing slots 910 can secure this part.
  • the wire harness is fixed, so that the wire harness connected to the second capacitor 600 can be neatly routed, avoiding positional interference between the wire harness and other components, and further facilitating the electric assembly. 1 overall layout.
  • the capacitor housing 3 is provided with a plurality of tie holes 920 , and at least part of the tie holes 920 is provided above the boost capacitor 700 . That is to say, a plurality of tie holes 920 can be provided above the boost capacitor 700.
  • the wire harness connected to the boost capacitor 700 can be fixed by a tie through the tie holes 920 after being led out from the boost capacitor 700.
  • the tie with holes 920 can fix this part of the wiring harness, thereby making the wiring harness connected to the boost capacitor 700 neater, avoiding positional interference between the wiring harness and other components, and further facilitating the overall layout of the electric assembly 1 .
  • the electric assembly 1 further includes a positive fuse 410 and a negative fuse 420 .
  • the positive fuse 410 is installed in the electronic control cavity 110 and is located between the first capacitor 500 and the DC connector 400 in the first direction.
  • One end 4101 of the positive fuse 410 is connected to the positive electrode 4001 of the DC connector 400 and the other end 4102 is connected to the positive electrode 4001 of the DC connector 400 .
  • the upper bridge arm 351 of each phase bridge arm 350 is connected.
  • the negative fuse 420 is installed in the electronic control cavity 110 and is located between the first capacitor 500 and the DC connector 400 in the first direction.
  • the negative fuse 420 is located below the positive fuse 410.
  • One end 4201 of the negative fuse 420 is connected to the DC connector.
  • the negative electrode 4002 of 400 is connected and the other end 4202 is connected to the lower arm 352 of each phase arm 350 .
  • the positive fuse 410 and the negative fuse 420 can be installed on the capacitor case 3, so that the layout between the positive fuse 410 and the negative fuse 420 is more hierarchical and does not increase the electric current in the first direction and the second direction.
  • the volume of the control cavity 110 will not affect the cross-sectional area of the electronic control cavity 110.
  • the parts of the electronic control cavity 110 are arranged more compactly, which improves the integration of the electric assembly 1. The size can be smaller.
  • the electric assembly 1 further includes a power module 800
  • the box 100 further includes a power cavity 190 .
  • the power cavity 190 is located at the end of the electronic control cavity 110 .
  • the power module 800 is located in the power cavity 190 .
  • the control board 320 can connect and communicate with the vehicle controller and the power module 800. The control board 320 outputs control signals according to the electrical signals of the vehicle controller to control the drive board 310 and the power module 800.
  • the power supply cavity 190 and the electric control cavity 110 are located on opposite sides in the thickness direction of the box 100.
  • the power module 800 is not likely to interfere with the electric control module 300 in the electric control cavity 110, and because the power supply cavity
  • the body 190 is located below the electronic control cavity 110, and the power module 800 is located on the side of the IGBT module 340 away from the control board 320, so that the distance between the power module 800 and the control board 320 is further, and the power module 800 and the control board 320 are separated by a shielding plate 330, which can further reduce the electromagnetic interference generated by the power module 800 on the control board 320, making the control of the electric assembly 1 more reliable and stable.
  • a bracket 101 is provided in the box 100.
  • the bracket 101 divides the box 100 into an upper electronic control cavity 110 and a lower power supply cavity 190.
  • the bracket 101 There are a plurality of shielding ribs 102 extending toward the power cavity 190 on the shielding rib 101.
  • the shielding ribs 102 form a shielding cavity 103.
  • the shielding cavity 103 is used to install the components that make up the power module 800.
  • the bracket 101 can isolate the electric control cavity 110 and the power supply cavity 190, and integrate the electric control cavity 110 and the power supply cavity 190 in the same box 100.
  • the integration level is higher, and the bracket 101 can avoid The components in the electronic control cavity 110 interfere with the components in the power supply cavity 190 .
  • the multiple shielding ribs 102 may divide the power supply cavity 190 into multiple shielding cavities 103 .
  • the multiple shielding cavities 103 can respectively accommodate the devices that make up the power module 800 , thereby avoiding electromagnetic interference between the multiple devices that make up the power module 800 and ensuring the normal operation of the power module 800 .
  • the shielding cavity 103 can also fix the components of the power module 800 to improve the installation stability of the power module 800 .
  • the box 100 further includes a bottom plate 810 , and the bottom plate 810 is used to block the opening below the power cavity 190 .
  • the bottom plate 810 can cover the power supply cavity 190, thereby fixing the power module 800 between the power supply cavity 190 and the bottom plate 810, further improving the airtightness of the power supply cavity 190 and making the fixation of the power supply module 800 more reliable.
  • the base plate 810 can also play a certain shielding role, thereby shielding the power module 190 from interference to the outside world.
  • the motor 200 includes a casing 230 and an end cover 240 .
  • the three-phase winding 210 is disposed in the casing 230.
  • the end cover 240 is disposed at one end of the casing 230 and is used to seal the casing 230.
  • the end cover 240 is provided with an opening 260 for the N line connecting component 250 to pass through.
  • the nose 220 is connected to one end 2101 of the three-phase winding 210 through the N line connection component 250 .
  • the N-wire connection component 250 can extend from the opening 260 and be connected with the N-wire nose 220 .
  • the conductive structure connecting the junction end of the three-phase winding 210 and the battery pack 2 does not need to pass through the box 100 , the wiring distance between the junction end of the three-phase winding 210 and the battery pack 2 is shorter, and the junction of the three-phase winding 210
  • the terminals and the battery pack 2 can conduct electricity through the connecting wire of the N wire nose 220.
  • the conductive structure between the junction terminal of the three-phase winding 210 and the battery pack 2 is simpler.
  • the N-wire connection component 250 can extend from the opening 260 and be connected to the battery pack 2 through the N-wire nose 220, the N-wire connection component 250 does not need to extend into the box 100, thus reducing the volume of the box 100. . Moreover, the N-line connection component 250 will not interfere with the electronic control module 300 in the box 100 , which facilitates layout in the box 100 .
  • the N-line connection assembly 250 includes an N-line adapter 251 , an N-line 252 , an N-line terminal block 253 and an N-line wire nose 220 .
  • One end of the N line 252 is connected to the one end 2101 of the three-phase winding 210.
  • One end of the N line adapter 251 is connected to the one end of the N line 252.
  • the other end of the N line adapter 251 passes through the opening 260 and is connected to the opening 260.
  • One end of the N wire nose 220 is connected, one end of the N wire terminal block 253 is connected to the other end of the N wire 252 , and the other end of the N wire terminal block 253 extends into the box 100 to be connected to the N wire copper of the electronic control module 300 Row 3001, N line copper row 3001 is provided with Hall 3002, Hall 3002 is connected to the electronic control module 300 through a signal line.
  • the N line adapter seat 251 By setting the N line adapter seat 251, it is convenient to realize the connection between the junction end of the three-phase winding 210 and the N line nose 220, and the setting of the N line 252 and the N line terminal block 253 can realize the connection between the three-phase winding 210 and the N line terminal block 253.
  • the charging base of the vehicle is connected, so that when the charging base is connected to a charging box with a lower charging voltage (for example, the charging voltage is 450V), the charging current can be guided to the three-phase windings 210 and
  • the bridge arm 350 flows to the battery pack 2 through the bridge arm 350, thereby realizing boost charging of the battery pack 2.
  • a plug-in slot 270 is provided at one end of the casing 230 near the end cover 240 .
  • the plug-in slot 270 is provided near the electronic control cavity 110 , and the N-line terminal block 253 is inserted into the plug-in slot 270 .
  • the plug-in slot 270 is fixedly connected to the chassis 230 . In this way, the casing 230 and the N line terminal block 253 are fixed, and the distance between the N line terminal block 253 and the other end of the N line 252 and the N line copper bar 3001 of the electronic control module 300 is closer. The size can be smaller.
  • the electric assembly 1 also includes a water channel cover 120.
  • the water channel cover 120 is provided with a first water channel 130, and the electronic control cavity 110 is provided with a first water channel 130.
  • the second water channel 140 and the third water channel 150, the water channel cover 120 is connected to the box 100 and covers the second water channel 140 and the third water channel 150.
  • the water channel cover 120 can be integrated with the box 100 through friction welding.
  • the first water channel 130 is connected to both the second water channel 140 and the third water channel 150 .
  • the second water channel 140 is suitable for communication with the water inlet pipe 160
  • the third water channel 150 is suitable for communication with the water outlet pipe 170 .
  • the cooling liquid in the second water channel 140 flows into the first water channel 130 to dissipate heat for the IGBT module 340; the cooling liquid in the first water channel 130 flows into the third water channel 150 to dissipate heat for the power module 800.
  • the first water channel 130, the second water channel 140 and the third water channel 150 form a connected water channel
  • the cooling liquid in the first water channel 130, the second water channel 140 and the third water channel 150 can be shared
  • the IGBT module can
  • the first water channel 130 is sealed to avoid leakage of coolant in the first water channel 130
  • the coolant in the first water channel 130 can cool down the IGBT module 340 to avoid high temperature damage to the IGBT module 340 and make the IGBT module 340 At low temperature or normal temperature, it maintains its working stability.
  • the water channel cover 120 can seal the second water channel 140 and the third water channel 150 to prevent the cooling liquid in the second water channel 140 and the third water channel 150 from leaking.
  • the coolant in the third water channel 150 can exchange heat with the power module 800 through the outer wall of the third water channel 150, thereby reducing the temperature of the power module 800 and keeping the power module 800 in a low temperature state or a normal temperature state, thereby enabling Improve the working stability of the power module 800 and avoid damage to the power module 800 due to high temperature.
  • first water channel 130, the second water channel 140 and the third water channel 150 are connected, and the flow path of the cooling liquid is longer.
  • the cooling liquid in the second water channel 140 can flow into the first water channel 130 to dissipate heat for the IGBT module 340 .
  • the coolant in the first water channel 130 can also flow into the third water channel 150 In order to dissipate heat for the power module 800, it is beneficial to improve the utilization rate of the coolant, and enable the coolant to fully exchange heat with the power module 800 and the IGBT module 340.
  • the electric assembly 1 further includes a sealing ring 180 , the water channel cover 120 is provided with a sealing groove surrounding the first water channel 130 , and the sealing ring 180 is provided in the sealing groove.
  • the IGBT module 340 presses the sealing ring 180 tightly, and the sealing ring 180 fills the gap between the water channel cover 120 and the IGBT module.
  • the IGBT module 340 can better seal the first water channel 130 , further improve the sealing performance of the first water channel 130 , and more effectively prevent the cooling liquid in the first water channel 130 from leaking.
  • the third water channel 150 includes a transition section 151 and an annular section 152 .
  • the transition section 151 is connected to the first water channel 130 .
  • the annular section 152 surrounds the power module 800 and dissipates heat for the power module 800 .
  • One end of the annular section 152 is connected to the other end of the transition section 151 and the other end of the annular section 152 is provided with a water outlet hole 1521 .
  • the depth of the annular section 152 is greater than the depth of the second water channel 140 and the depth of the transition section 151 .
  • the cooling liquid first flows into the second water channel 140 and then flows into the first water channel 130. Then the cooling liquid in the first water channel 130 flows to the transition section 151, and finally flows from the transition section 151 to the annular section 152, so that the water outlet of the annular section 152 Hole 1521 discharges. Moreover, the contact area between the annular section 152 and the power module 800 is larger, and the structure of the annular section 152 is more compact and takes up less space. Using the annular section 152 to dissipate heat for the power module 800 can improve the exchange rate between the third water channel 150 and the power module 800 . The thermal effect enables the power module 800 to quickly cool down and achieve better heat dissipation.
  • the depth of the annular section 152 is greater than the depth of the second water channel 140 and the depth of the transition section 151 .
  • the volume of the annular section 152 can be made larger, and the cooling liquid in the annular section 152 can be more, thereby improving the heat dissipation effect of the annular section 152 on the power module 800 .
  • the second water channel 140 can be connected with the first water channel 140 .
  • the transition between the water channels 130 is smoother, and the transition between the transition section 151 and the first water channel 130 is smoother, and the cooling liquid circulates between the third water channel 150 and the first water channel 130 more gently, so that the coolant can fully
  • the heat is exchanged with the power module 800 and the IGBT module to further improve the heat dissipation effect of the power module 800 and the heat dissipation effect of the IGBT module 340 .
  • the electric assembly 1 further includes a water inlet pipe 160 and a water outlet pipe 170 .
  • the water inlet pipe 160 is installed on the box 100 and communicates with the second water channel 140.
  • the water outlet pipe 170 is installed on the box 100 and communicates with the water outlet hole 1521.
  • the water inlet pipe 160 and the water outlet pipe 170 are arranged vertically to each other.
  • the cooling liquid can flow into the second water channel 140 , the first water channel 130 and the third water channel 150 through the water inlet pipe 160 , and the cooling liquid can be discharged through the water outlet hole 1521 and the water outlet pipe 170 . That is to say, after the coolant has fully exchanged heat with the power module 800 and the IGBT module 340, the coolant in the second water channel 140, the first water channel 130 and the third water channel 150 can be discharged through the water outlet pipe 170 and passed through the water inlet pipe. 160 replenishes the coolant in the second water channel 140, the first water channel 130 and the third water channel 150, keeps the coolant in the second water channel 140, the first water channel 130 and the third water channel 150 sufficient, and makes the temperature of the coolant relatively high. Low to improve the cooling effect of the third water channel 150 and the first water channel 130 on the power module 800 and the IGBT module 340 .
  • the water inlet pipe 160 and the water outlet pipe 170 are arranged vertically.
  • the water inlet pipe 160 can be arranged on one side of the box 100 and the water outlet pipe 170 can be arranged on an adjacent side of the box 100 .
  • the positional interference of the water inlet pipe 160 and the water outlet pipe 170 can be avoided, which facilitates layout, and the lengths of the third water channel 150 and the first water channel 130 can be set longer so that the third water channel 150 and the first water channel 130 can cover the box. 100, further improving the cooling effect of the third water channel 150 and the first water channel 130 on the power module 800 and the IGBT module 340.
  • the coolant in the third water channel 150 and the first water channel 130 can reduce the temperature of the box 100 and further dissipate heat for other components installed in the box 100 to improve the heat dissipation effect of the box 100 .
  • a pressure plate 900 can be added.
  • the pressure plate 900 is installed on the box 100 and clamps the water outlet pipe 170 together with the box 100 to fix the position of the water outlet pipe 170 relative to the box 100 .
  • the power module 800 includes a power board 870.
  • the power board 870 is installed in the power cavity 190.
  • a plurality of devices are installed on the power board 870.
  • the multiple devices include a transformer 820 , a transformer inductor 830 , an AC inductor 850 , a DC inductor 860 and a plurality of MOS transistors 840 .
  • the transformer 820 and the transformer inductor 830 are arranged at intervals.
  • a plurality of MOS transistors 840 are arranged on opposite sides of the transformer 820 and the transformer inductor 830.
  • the AC inductor 850 and the DC inductor 860 are arranged on opposite sides of the transformer 820 and the transformer inductor 830.
  • the third water channel 150 surrounds the transformer 820 and the transformer inductor 830 .
  • a plurality of MOS tubes 840 are located on opposite sides of the third water channel 150 and exchange heat with the third water channel 150 .
  • the third water channel 150 surrounds the transformer 820 and the transformer inductor 830, and the plurality of MOS tubes 840 are located outside the third water channel 150 and fit with the outer wall of the third water channel 150.
  • the third water channel 150 can be the transformer 820, the transformer inductor 830, and more.
  • a MOS tube 840, an AC inductor 850 and a DC inductor 860 are used for heat dissipation, thereby improving the heat dissipation efficiency of the power module 800.
  • the AC inductor 850 and the DC inductor 860 are respectively located on opposite sides of the third water channel 150 .
  • the transformer inductor 830, AC inductor 850 and DC inductor 860 are separated by the side wall of the third water channel 150, which reduces the probability and impact of electromagnetic interference between the transformer inductor 830, AC inductor 850 and DC inductor 860, and improves Control reliability of electric assembly 1.
  • the power supply cavity 190 is provided with a plurality of MOS tube cavities 191 , AC inductor cavities 192 and DC inductor cavities 193 , and the AC inductor 850 extends into the AC inductor cavity 192 , the DC inductor 860 extends into the DC inductor cavity 193, and the multiple MOS tubes 840 extend into the multiple MOS tube chambers 191 in one-to-one correspondence.
  • electromagnetic interference between multiple MOS transistors 840, AC inductor 850, DC inductor 860 and transformer inductor 830 is further avoided, and interference with external electronic devices can also be avoided, which is beneficial to improving electromagnetic compatibility.
  • a vehicle 1000 according to an embodiment of the present disclosure is described below with reference to FIG. 13 .
  • the vehicle 1000 includes the electric assembly 1 according to the above-described embodiment of the present disclosure.
  • the electric assembly 1 according to the above embodiment of the present disclosure, not only can the self-heating of the battery pack 2 be realized, but also the three components of the motor 200 can be reused in the self-heating circuit of the battery pack 2
  • the phase winding 210 and the bridge arm 350 of the electronic control module 300 have the advantages of low cost, small size, and low number of parts.

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Abstract

一种车辆，具有电动总成，包括箱体、N线连接组件、电机、电控模块和直流接插件。该箱体包括电控腔体，该N线连接组件的一端适于连接在两个串联的电池包之间。该电机包括三相绕组，该三相绕组的一端为汇接端，该汇接端连接至该N线连接组件的另一端。该电控模块包括IGBT模组，该IGBT模组包括三相桥臂，且其另一端分别连接至该三相桥臂的中点。该直流接插件的正极连接至该汇接端，该直流接插件的负极连接至该IGBT模组，并适于连接该电池包的负极。

Description

电动总成和具有其的车辆
相关申请的交叉引用
本申请要求在2022年8月18日提交至中国国家知识产权局、申请号为202210994370.6、名称为“电动总成和具有其的车辆”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本公开涉及车辆技术领域，尤其是涉及一种电动总成和具有其的车辆。
背景技术
相关技术中，电池包在低温状态下充放电效率较低，无法充分利用电池包的电能。因此，一些电动总成通过正温度系数(Positive Temperature Coefficient，PTC)加热件对电池包进行加热，但是这样导致电动总成需要额外设置PTC加热件，造成零件数量更多，增大了电动总成的成本和体积。
发明内容
本公开旨在至少解决现有技术中存在的技术问题之一。为此，本公开的一个目的在于提出一种电动总成，该电动总成不仅能够实现电池包的自加热，而且在电池包的自加热电路中复用了电机的三相绕组以及电控模块的桥臂，具有成本低、体积小以及零件数量少等优点。
本公开还提出一种具有上述电动总成的车辆。
为了实现上述目的，根据本公开的第一方面实施例提出一种电动总成，包括：箱体，所述箱体包括电控腔体；N线连接组件，所述N线连接组件的一端适于连接在两个串联的电池包之间；电机，所述电机包括三相绕组，所述三相绕组的一端为汇接端，所述汇接端连接至所述N线连接组件的另一端；电控模块，所述电控模块安装于所述电控腔体，所述电控模块包括IGBT模组，所述IGBT模组包括三相桥臂，所述三相绕组的另一端分别连接至所述三相桥臂的中点；以及直流接插件，所述直流接插件的正极连接至所述汇接端，所述直流接插件的负极连接至所述IGBT模组，并适于连接所述电池包的负极。
根据本公开实施例的电动总成不仅能够实现电池包的自加热，而且在电池包的自加热电路中复用了电机的三相绕组以及电控模块的桥臂，具有成本低、体积小以及零件数量少等优点。
根据本公开的一些实施例，所述电动总成还包括：第一电容，所述第一电容安装于所述电控腔体内且为X电容，所述第一电容的一端与所述直流接插件的正极连接且另一端与所述直流接插件的负极连接。
根据本公开的一些实施例，所述电动总成还包括：第二电容，所述第二电容安装于所述电控腔体内且为X电容，所述第二电容的一端与所述第一电容的所述一端连接且另一端与所述直流接插件的正极连接；第二电容接触器，所述第二电容接触器的一端与所述第二电容的所述一端连接且所述第二电容接触器的另一端与所述三相绕组的所述一端连接。
根据本公开的一些实施例，所述第一电容为X1电容，所述第二电容为X2电容。
根据本公开的一些实施例，所述电动总成还包括：升压电容，所述升压电容安装于所述电控腔体内，所述升压电容的一端连接于所述直流接插件的负极，所述升压电容的另一端与所述三相绕组的所述另一端连接。
根据本公开的一些实施例，所述电动总成还包括：电容壳体，所述第一电容、所述第二电容和所述升压电容集成于所述电容壳体。
根据本公开的一些实施例，所述电动总成还包括：负极输出铜排，所述负极输出铜排安装于所述电容壳体，所述第一电容和所述第二电容共用所述负极输出铜排。
根据本公开的一些实施例，所述电容壳体上设有多个线束固定槽，多个所述线束固定槽的至少部分设于所述 第二电容的上方。
根据本公开的一些实施例，所述电容壳体上设有多个扎带孔，所述扎带孔的至少部分设于所述升压电容的上方。
根据本公开的一些实施例，所述电动总成还包括：正极保险，所述正极保险安装于所述电控腔体内，所述正极保险的一端与所述直流接插件的正极连接且另一端与每相所述桥臂的上桥臂连接；以及负极保险，所述负极保险安装于所述电控腔体内，且所述负极保险位于所述正极保险的下方，所述负极保险的一端与所述直流接插件的负极连接且另一端与每相所述桥臂的下桥臂连接。
根据本公开的一些实施例，所述电动总成还包括：电源模块，所述箱体还包括电源腔体，所述电源腔体设于所述电控腔体的下方，所述电源模块设于所述电源腔体内。
根据本公开的一些实施例，所述箱体内设有支架，所述支架将所述箱体分隔为上部的所述电控腔体和下部的所述电源腔体，所述支架上设有多个朝向所述电源腔体延伸的屏蔽筋，所述屏蔽筋形成屏蔽腔，所述屏蔽腔用于安装形成所述电源模块的器件。
根据本公开的一些实施例，所述箱体还包括底板，所述底板用于封堵所述电源腔体下方的开口。
根据本公开的一些实施例，所述电机包括：机壳，所述三相绕组设于所述机壳内；端盖，所述端盖设于所述机壳的一端并用于封堵所述机壳，所述端盖上开设有供所述N线连接组件穿过的开口。
根据本公开的一些实施例，所述N线连接组件包括：N线，所述N线的一端与所述三相绕组的所述一端连接；N线转接座，所述N线转接座的一端与所述N线的所述一端连接；N线线鼻子，所述N线转接座的另一端穿过的所述开口后与所述N线线鼻子的一端连接；以及N线接线座，所述N线接线座的一端与所述N线的另一端连接，所述N线接线座的另一端连接至所述电控模块的N线铜排，所述N线铜排穿设有霍尔，所述霍尔通过信号线与所述电控模块连接。
根据本公开的一些实施例，所述机壳上靠近所述端盖的一端设有插接槽，所述插接槽靠近所述电控腔体设置，所述N线接线座插入所述插接槽，并与所述机壳固定连接。
根据本公开的一些实施例，所述电动总成还包括：水道盖板，所述水道盖板设有第一水道，所述电控腔体设有第二水道和第三水道，所述水道盖板与所述箱体连接且封盖所述第二水道和第三水道，所述第一水道分别与所述第二水道和所述第三水道连通，所述第二水道适于与进水管连通，所述第三水道适于与出水管连通；其中，所述第二水道内的冷却液流入所述第一水道为所述IGBT模组散热，所述第一水道内的冷却液流入所述第三水道为所述电源模块散热。
根据本公开的一些实施例，所述电动总成还包括：密封圈，所述水道盖板设有环绕所述第一水道的密封槽，所述密封圈设于所述密封槽内，所述IGBT模组将所述密封圈压紧，所述密封圈填充所述水道盖板和所述IGBT模块的间隙。
根据本公开的一些实施例，所述第三水道包括：过渡段，所述过渡段连通至所述第一水道；环形段，所述环形段围绕所述电源模块并为所述电源模块散热，所述环形段的一端与所述过渡段的另一端连接且另一端设有出水孔；其中，所述环形段的深度大于所述第二水道的深度以及所述过渡段的深度。
根据本公开的一些实施例，所述电源模块包括：电源功率板，所述电源功率板安装于所述电源腔体内，所述电源功率板上安装有多个器件；多个所述器件包括：变压器和变压器电感，所述变压器和变压器电感间隔排布；多个MOS管，多个所述MOS管分设于所述变压器和所述变压器电感的相对两侧；以及AC电感和DC电感，所述AC电感和所述DC电感分设于所述变压器和所述变压器电感的相对两侧；其中，所述第三水道环绕所述变压器和所述变压器电感，多个所述MOS管位于所述第三水道的相对两侧且与所述第三水道换热。
根据本公开的一些实施例，所述电源腔体设有多个MOS管腔、AC电感腔和DC电感腔，所述AC电感伸入所述AC电感腔，所述DC电感伸入所述DC电感腔，多个所述MOS管一一对应地伸入多个所述MOS管腔。
根据本公开的一些实施例，所述电控模块包括：控制板；和驱动板，所述驱动板设于所述控制板的下方。所述IGBT模组设于所述驱动板上，所述IGBT模组与所述控制板连接。所述电动总成还包括：屏蔽板，所述屏蔽板设于所述驱动板和所述控制板之间。
根据本公开的第二方面实施例提出一种车辆，包括根据本公开的第一方面实施例所述的电动总成。
根据本公开的第二方面实施例的车辆，通过利用根据本公开的第一方面实施例所述的电动总成，不仅能够实现电池包的自加热，而且在电池包的自加热电路中复用了电机的三相绕组以及电控模块的桥臂，具有成本低、体积小以及零件数量少等优点。
本公开的附加方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本公开的实践了解到。
附图说明
本公开的上述和/或附加的方面和优点从结合下面附图对实施例的描述中将变得明显和容易理解，其中：
图1是根据本公开实施例的电动总成的结构示意图。
图2是根据本公开实施例的电动总成的爆炸图。
图3是根据本公开实施例的电动总成的箱体的电控腔体的爆炸图。
图4是根据本公开实施例的电动总成的电容壳体的结构示意图。
图5是根据本公开实施例的电动总成的箱体的电控腔体的结构示意图。
图6是根据本公开实施例的电动总成的箱体的电源腔体的爆炸图。
图7是根据本公开实施例的电动总成的箱体的电源腔体的结构示意图。
图8是根据本公开实施例的电动总成的剖视图。
图9是根据本公开实施例的电动总成的另一视角的剖视图。
图10是根据本公开实施例的电动总成的水道盖板的结构示意图。
图11是根据本公开实施例的电动总成的电路示意图。
图12是根据本公开实施例的电动总成的电控腔体的布局示意图。
图13是根据本公开实施例的车辆的示意性框图。
附图标记：
电动总成1、电池包2、电容壳体3、
箱体100、支架101、屏蔽筋102、屏蔽腔103、电控腔体110、水道盖板120、第一水道130、第二水道140、
第三水道150、过渡段151、环形段152、进水管160、出水管170、密封圈180、电源腔体190、MOS管腔191、AC电感腔192、DC电感腔193、
电机200、绕组210、N线线鼻子220、机壳230、端盖240、N线连接组件250、N线转接座251、N线252、
N线接线座253、开口260、插接槽270、
电控模块300、驱动板310、控制板320、屏蔽板330、IGBT模组340、桥臂350、上桥臂351、下桥臂352、
直流接插件400、正极保险410、负极保险420、
第一电容500、负极输出铜排510、第二电容600、第二电容接触器610、升压电容700、
电源模块800、底板810、变压器820、变压器电感830、MOS管840、AC电感850、DC电感860、电源功
率板870、压板900、线束固定槽910、扎带孔920；车辆1000。
具体实施方式
参考附图描述的实施例是示例性的，下面详细描述本公开的实施例。
在本公开的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”、“顺时针”、“逆时针”、“轴向”、“径向”、“周向”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本公开和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本公开的限制。
在本公开的描述中，“多个”的含义是两个或两个以上。
下面参考附图描述根据本公开实施例的电动总成1。
如图1-图12所示(箭头A所指为第一方向，箭头B所指为第二方向)，根据本公开实施例的电动总成1包括箱体100、N线连接组件250、电机200、电控模块300和直流接插件400。
箱体100包括电控腔体110。电机200包括三相绕组210，三相绕组210的一端2101为汇接端，汇接端连接有N线连接组件250，N线连接组件250的一端2501适于连接在两个串联的电池包2之间。电控模块300安装于电控腔体110，且电控模块300包括IGBT模组340。例如，电控模块300包括驱动板310和控制板320，驱动板310设于控制板320的下方。可选地，驱动板310和控制板320之间还设有屏蔽板330。可选地，IGBT模组340设在驱动板310上，IGBT模组340与控制板320连接。IGBT模组340包括三相桥臂350，三相绕组210的另一端2102分别连接至三相桥臂350的中点。直流接插件400的正极4001连接至汇接端，例如直流接插件400的正极4001连接至三相上桥臂351，直流接插件400的负极4002连接至IGBT模组340并适于连接电池包2的负极，例如直流接插件400的负极4002连接至三相下桥臂352。
需要说明的是，三相绕组210的上述另一端2102分别连接至三相桥臂350的中点，是指，三相绕组210的上述另一端2102分别连接至三相桥臂350的上桥臂351和下桥臂352之间，而并非是指三相绕组210的上述另一端2102分别连接至三相桥臂350的中间位置。
根据本公开实施例的电动总成1，通过将电控模块300安装于电控腔体110，电控模块300包括驱动板310和控制板320，驱动板310设于控制板320的下方，且驱动板310和控制板320之间还设有屏蔽板330，屏蔽板330能够衰减驱动板310对控制板320的电磁干扰，避免控制板320的控制信号产生波动，提高控制板320的控制信号的可靠性。
根据本公开的一些实施例，IGBT模组340设在驱动板310上，IGBT模组340包括三相桥臂350，IGBT模组340与控制板320连接，举例而言，每相桥臂350均包括上桥臂351和下桥臂352，三相上桥臂351汇接后连接至控制板320的第一控制接口，三相下桥臂352汇接后连接至控制板320的第二控制接口。
由于三相上桥臂351均受到第一控制接口发出的电信号的控制，因此三相上桥臂351会同时导通或者同时关闭。由于三相下桥臂352均受到第二控制接口发出的电信号的控制，因此三相下桥臂352会同时导通或者同时关闭，并且，三相上桥臂351的状态与三相下桥臂352的状态可以保持相反，即第一控制接口的电信号和第二控制接口的电信号可以相反。
也就是说，电机200为三相电机，电机200可以为驱动电机或者发电机，通过将三相绕组210应用于电动总成1，且三相绕组210与三相桥臂350一一对应地连接，能够减小电动总成1的电路中产生纹波电流的概率，保证了电池包2的加热电压和充电电压的稳定性，并且可以提高电能质量。
另外，三相绕组210的一端2101为汇接端，汇接端连接有N线连接组件250，N线连接组件250的一端2501适于连接在两个串联的电池包2之间。三相绕组210的另一端2102分别连接至三相桥臂350的中点，直流接插件400的正极4001连接至三相上桥臂351，直流接插件400的负极4002连接至三相下桥臂352。其中，直流接插件400的正极4001与串联的两个电池包2的正极连接，直流接插件400的负极4002与串联的两个电池包2的负极连接。
举例而言，在基波周期的正半周期，当上桥臂351开通且下桥臂352关闭时，两个电池包2中的一个放电，经上桥臂351的IGBT形成回路，两个电池包2中的上述一个电池包的电流经上桥臂351向三相绕组210充电， 当下桥臂352开通且上桥臂351关闭时，三相绕组210续流为两个电池包2中的另一个电池包充电，再经下桥臂352的二极管形成回路。
在基波周期的负半周期，当下桥臂352开通且上桥臂351关闭时，两个电池包2中的上述另一个向三相绕组210放电，经下桥臂352的IGBT形成回路，两个电池包2中的上述另一个电池包的电流经上桥臂351向三相绕组210充电，当上桥臂351开通且下桥臂352关闭时，三相绕组210续流为两个电池包2中的上述一个电池包充电，再经上桥臂351的二极管形成回路。
通过控制上桥臂351和下桥臂352以高频开断频率运行，两个电池包2通过电流振荡互相充放电，使两个电池包2的内阻发热而实现电池包2的自加热。其中，可以通过霍尔监测三相绕组210的汇接点和电池包2之间的电流量。
这样，在低温环境中，电池包2可以进行自加热，不仅能够提高电池包2的供电效率，例如车辆在行驶过程中，电池包2可以进行自加热，以使电池包2保持在高效率供电的工作状态，而且在电池包2充电时，电池包2可以先进行自加热，从而提升充电效率。电动总成1无需额外设置PTC加热件，这降低了成本，减小了体积，减少了零件数量，并且，相比于采用PTC加热件加热电池包的电动总成，本公开的电动总成1对电池包2的电量消耗更小，有利于提高车辆的续航。
此外，电池包2的自加热电路复用了电机200的三相绕组210以及电控模块300的桥臂350，提高了电动总成1的零件利用率，减小了零件数量，从而电动总成1的体积更小，且成本更低。
如此，根据本公开实施例的电动总成1不仅能够实现电池包2的自加热，而且在电池包2的自加热电路中复用了电机200的三相绕组210以及电控模块300的桥臂350，具有成本低、体积小以及零件数量少等优点。
根据本公开的一些具体实施例，如图11和图12所示，电动总成1还包括第一电容500，第一电容500安装于电控腔体110内且为X电容，第一电容500在第一方向上位于直流接插件400和电控模块300之间，电控模块300沿第二方向延伸，第一方向和第二方向正交，第一电容500的一端5001与直流接插件400的正极4001连接且另一端5002与直流接插件400的负极4002连接。
其中，当电池包2给控制单元的桥臂350供电时，电池包2的电流会经过直流接插件400和第一电容500，第一电容500吸收电池包2输出的纹波电流，对电池包2的输出电流进行滤波，以保证对桥臂350供电的电压稳定；
当对电池包2进行充电时，输入到电池包2的电流会先经过第一电容500，第一电容500可以吸收向电池包2输入的电流中的纹波电流，使流向电池包2的电流的充电电压稳定。
这样，第一电容500与直流接插件400和电控模块300的整体距离更小，第一电容500、直流接插件400和电控模块300三者更为紧凑，第一电容500、直流接插件400和电控模块300之间的连接更为方便，且走线距离更小，电连接可靠性更高，从而提高了电动总成1的集成度，电控腔体110的体积可以更小，电动总成1的体积也随之减小。
根据本公开的一些具体实施例，如图11和图12所示，电动总成1还包括第二电容600和第二电容接触器610。
第二电容600安装于电控腔体110内且为X电容，第二电容600在第一方向上位于直流接插件400和电控模块300之间，第二电容600位于第一电容500的上方，第二电容600的一端6001与第一电容500的一端5001连接且另一端6002与直流接插件400的正极4001连接。第二电容接触器610安装于电控腔体110内，第二电容接触器610在第二方向上位于电控腔体110的内壁和电控模块300之间，第二电容接触器610在第一方向上邻近电控模块300朝向第二电容600的一侧，第二电容接触器610的一端6101与第二电容600的一端6001连接且第二电容接触器610的另一端6102与三相绕组210的一端2101连接。
也就是说，第一电容500和第二电容600串联，且串联的第一电容500和第二电容600与直流接插件400的正极4001和负极4002连接，第一电容500和第二电容600能够共同起到吸收纹波电流的作用，以实现电池包2 的输出电压以及输入到电池包2的充电电压的稳定性的目的。并且，第二电容600能够用来消除差模干扰。
通过第二电容接触器610的设置，能够控制第二电容600是否与三相绕组210的汇接端连通。当电池包2升压充电或者自加热时，第二电容接触器610可以导通，以使第二电容600和三相绕组210的汇接端连通，从而第二电容600能够起到吸收三相绕组210的汇接端和电池包2之间的差模电流的作用，以降低直流接插件400的正极和负极之间的高频差模电流分量，尽可能降低磁环在某个频点的高频电流饱和风险。
这样，第二电容600与第二电容接触器610、第一电容500、直流接插件400和电控模块300的整体距离更小，第二电容600、第二电容接触器610、第一电容500、直流接插件400和电控模块300五者更为紧凑，第二电容600、第二电容接触器610、第一电容500、直流接插件400和电控模块300之间的连接更为方便，且走线距离更小，电连接可靠性更高，从而提高了电动总成1的集成度，电控腔体110的体积可以更小，电动总成1的体积也随之减小。
根据本公开的一些具体实施例，第一电容500为X1电容，第二电容600为X2电容。其中，第一电容500的耐高压为2.5KV～4KV，第二电容600的耐高压不大于2.5KV。
第一电容500是电池包2给控制单元的桥臂350的IGBT供电时具有稳压滤波功能的电容，而车辆行驶中，IGBT在转换电流时功率比较大，因此第一电容500的耐高压范围需要较高。
第二电容600用于在电池包2自加热时吸收N线252上的差模电流。从图1-图11可知，第二电容600通过第二电容接触器610与N线252连接，在电池包2自加热时N线252导通，电池包2自加热的功率没有IGBT在车辆行驶中转换电流时功率大，因此第二电容600的耐高压范围可以小于第一电容500的耐高压范围。
根据本公开的一些具体实施例，如图4所示，电动总成1还包括负极输出铜排510，第一电容500和第二电容600共用负极输出铜排510。这样，无需额外为第一电容500或者第二电容600单独设置负极输出铜排510，减少了零件数量，降低了生产成本，从而有利于减小电动总成1的体积。
其中，第一电容500的负极铜排可以和直流母线的负极铜排连接，第二电容600的正极铜排可以和直流母线的正极铜排连接。
根据本公开的一些具体实施例，如图3、图4、图11和图12所示，电动总成1还包括升压电容700，升压电容700安装于电控腔体110内，升压电容700在第二方向上位于第一电容500的背向第二电容接触器610的一侧，升压电容700的一端7001连接于直流接插件400的负极4002，升压电容700的另一端7002与三相绕组210的上述另一端2102连接。也就是说，升压电容700的两端分别连接为电池包2充电的充电装置(例如充电桩或者充电柜)的正极和负极。
其中，第一电容500、第二电容600和三相绕组210形成了一个L/C电路。升压电容700能够吸收纹波电流，对充电装置的输入电流进行滤波，以稳定充电装置的输入到电动总成1中的电压。
根据本公开的一些具体实施例，如图4所示，电动总成1还包括电容壳体3，第一电容500、第二电容600和升压电容700集成于电容壳体3。
这样，升压电容700、第二电容600和第一电容500三者之间的距离更近，升压电容700、第二电容600和第一电容500三者可以同步拆装，简化了拆装流程，且提高了电动总成1的集成度，电控腔体110的体积可以更小，电动总成1的体积也随之减小。
而且，第一电容500和第二电容600可以共用负极输出铜排510，并且能够共用散热装置，便于散热且便于线束的连接，节省空间和成本。
根据本公开的一些具体实施例，如图4所示，电容壳体3上设有多个线束固定槽910，多个线束固定槽910的至少一部分设于第二电容600的上方。也就是说，第二电容600的上方可以设有多个线束固定槽910，连接第二电容600的线束由第二电容600引出后可以穿过线束固定槽910，线束固定槽910可以将该部分线束进行固定，从而可以使连接第二电容600的线束走线更加整洁，避免线束与其他零部件发生位置干涉，进一步便于电动总成 1的整体布局。
根据本公开的一些具体实施例，如图4所示，电容壳体3上设有多个扎带孔920，扎带孔920的至少部分设于升压电容700的上方。也就是说，升压电容700的上方可以设有多个扎带孔920，连接升压电容700的线束由升压电容700引出后可以通过穿过扎带孔920的扎带固定，穿过扎带孔920的扎带可以将该部分线束进行固定，从而可以使连接升压电容700的线束走线更加整洁，避免线束与其他零部件发生位置干涉，进一步便于电动总成1的整体布局。
根据本公开的一些具体实施例，如图3、图11和图12所示，电动总成1还包括正极保险410和负极保险420。
正极保险410安装于电控腔体110内且在第一方向上位于第一电容500和直流接插件400之间，正极保险410的一端4101与直流接插件400的正极4001连接且另一端4102与每相桥臂350的上桥臂351连接。通过设置正极保险410，能够防止电池包2在自加热过程中的部分回流电流和电池包2的正极上的电流发生短路，提高了电动总成1的电连接的安全性。
负极保险420安装于电控腔体110内且在第一方向上位于第一电容500和直流接插件400之间，负极保险420位于正极保险410的下方，负极保险420的一端4201与直流接插件400的负极4002连接且另一端4202与每相桥臂350的下桥臂352连接。通过设置负极保险420，能够避免电池包2对桥臂350的驱动电流过大，起到驱动保险的作用。
举例而言，正极保险410和负极保险420可以安装于电容壳体3，这样正极保险410和负极保险420之间的布局更有层次，不会在第一方向上和第二方向上增大电控腔体110的体积，即不会影响电控腔体110的横截面积，电控腔体110的零件布置的更为紧凑，提高了电动总成1的集成度，电控腔体110的体积可以更小。
根据本公开的一些具体实施例，如图6-图8所示，电动总成1还包括电源模块800，箱体100还包括电源腔体190，电源腔体190设于电控腔体110的下方，电源模块800设于电源腔体190内。其中，控制板320可以与整车控制器和电源模块800连接通信，控制板320根据整车控制器的电信号输出控制信号，以控制驱动板310和电源模块800。
也就是说，电源腔体190和电控腔体110分设与箱体100的厚度方向的相对两侧，电源模块800不易对电控腔体110内的电控模块300产生干扰，并且由于电源腔体190设于电控腔体110的下方，电源模块800位于IGBT模组340远离控制板320的一侧，这样电源模块800与控制板320之间的距离更远，且电源模块800与控制板320之间被屏蔽板330间隔，能够进一步地减小电源模块800对控制板320产生的电磁干扰，电动总成1的控制更为可靠以及稳定。
根据本公开的一些具体实施例，如图8所示，箱体100内设有支架101，支架101将箱体100分隔为位于上部的电控腔体110和位于下部的电源腔体190，支架101上设有多个朝向电源腔体190延伸的屏蔽筋102，屏蔽筋102形成屏蔽腔103，屏蔽腔103用于安装组成电源模块800的器件。
由此，支架101可以隔断电控腔体110和电源腔体190，且使电控腔体110和电源腔体190都集成在同一个箱体100内，集成度更高，且支架101可以避免电控腔体110内的零部件和电源腔体190内的零部件发生干涉。
而且，屏蔽筋102可以为多个，多个屏蔽筋102可以将电源腔体190内分隔成多个屏蔽腔103。这样，多个屏蔽腔103可以分别容纳组成电源模块800的器件，避免组成电源模块800的多个器件之间发生电磁干涉，以保证电源模块800的正常工作。同时，屏蔽腔103还可以对电源模块800的器件进行固定，以提高对电源模块800的安装稳定性。
根据本公开的一些实施例，如图6和图8所示，箱体100还包括底板810，底板810用于封堵电源腔体190下方的开口。这样，底板810可以封盖电源腔体190，从而将电源模块800固定在电源腔体190和底板810之间，进一步提高了电源腔体190的密闭性，使其对电源模块800的固定更加可靠，且底板810也可以起到一定的屏蔽作用，进而可以屏蔽电源模块190对外界的干扰。
根据本公开的一些具体实施例，如图2所示，电机200包括机壳230和端盖240。
三相绕组210设于机壳230内，端盖240设于机壳230的一端并用于封堵机壳230，端盖240上开设有供N线连接组件250穿过的开口260，N线线鼻子220通过N线连接组件250与三相绕组210的一端2101连接。
这样，N线连接组件250可以从开口260中伸出，并与N线线鼻子220连接。使三相绕组210的汇接端与电池包2连接的导电结构无需经过箱体100，三相绕组210的汇接端与电池包2的走线路程更短，并且三相绕组210的汇接端与电池包2通过N线线鼻子220的连接导线进行导电即可，三相绕组210的汇接端与电池包2之间的导电结构更为简单。
另外，由于N线连接组件250可以从开口260中伸出并通过N线线鼻子220与电池包2连接，因此N线连接组件250无需伸入箱体100，因而能够减小箱体100的体积。并且，N线连接组件250不会与箱体100内的电控模块300发生干涉，便于箱体100内的布局。
根据本公开的一些具体实施例，如图2所示，N线连接组件250包括N线转接座251、N线252、N线接线座253和N线线鼻子220。
N线252的一端与三相绕组210的所述一端2101连接，N线转接座251的一端与N线252的该一端连接，N线转接座251的另一端穿过的开口260后与N线线鼻子220的一端连接，N线接线座253的一端与N线252的另一端连接，N线接线座253的该另一端伸入箱体100以连接至电控模块300的N线铜排3001，N线铜排3001穿设有霍尔3002，霍尔3002通过信号线与电控模块300连接。
通过设置N线转接座251，便于实现三相绕组210的汇接端和N线线鼻子220之间的连接，并且N线252和N线接线座253的设置，能够实现三相绕组210和车辆的充电座的连接，从而在充电座与充电电压较低(例如充电电压为450V)的充电箱连接时，可以通过N线252和N线接线座253将充电电流引导至三相绕组210和桥臂350，通过桥臂350在流向电池包2，从而实现电池包2的升压充电。
根据本公开的一些具体实施例，如图2所示，机壳230的靠近端盖240的一端设有插接槽270，插接槽270靠近电控腔体110设置，N线接线座253插入插接槽270，并与机壳230固定连接。这样，机壳230和N线接线座253之间固定，且N线接线座253与N线252的另一端以及电控模块300的N线铜排3001的距离更近，N线接线座253的体积可以更小。
根据本公开的一些具体实施例，如图4、图8-图10所示，电动总成1还包括水道盖板120，水道盖板120设有第一水道130，电控腔体110设有第二水道140和第三水道150，水道盖板120与箱体100连接且封盖第二水道140和第三水道150，其中，水道盖板120可以通过摩擦焊与箱体100连接成一体。
第一水道130与第二水道140和第三水道150均连通，第二水道140适于与进水管160连通，第三水道150适于与出水管170连通。其中，第二水道140内的冷却液流入第一水道130，从而为IGBT模组340散热；第一水道130内的冷却液流入第三水道150，从而为电源模块800散热。
也就是说，第一水道130、第二水道140和第三水道150形成了一个连通的水道，第一水道130、第二水道140和第三水道150内的冷却液可以共用，IGBT模块可以对第一水道130进行密封，避免了第一水道130内的冷却液泄漏，且第一水道130内的冷却液可以为IGBT模组340进行降温，避免高温损坏IGBT模组340，使IGBT模组340处于低温状态或者常温状态，保持其工作的稳定性。
并且，水道盖板120可以对第二水道140和第三水道150进行密封，避免第二水道140和第三水道150内的冷却液漏出。而且，第三水道150内的冷却液可以通过第三水道150的外壁与电源模块800进行换热，进而可以降低电源模块800的温度，使电源模块800保持在一个低温状态或者常温状态，进而可以提高电源模块800的工作稳定性，避免高温损坏电源模块800。
而且，第一水道130、第二水道140和第三水道150连通，冷却液的流动路径更长。第二水道140内的冷却液可以流入第一水道130内，从而为IGBT模组340进行散热。第一水道130内的冷却液也可流入第三水道150 内，从而为电源模块800进行散热，有利于提高冷却液的利用率，且使冷却液能够与电源模块800和IGBT模组340充分换热。
根据本公开的一些具体实施例，如图9和图10所示，电动总成1还包括密封圈180，水道盖板120设有环绕第一水道130的密封槽，密封圈180设于密封槽内，IGBT模组340将密封圈180压紧，密封圈180填充水道盖板120和IGBT模块的间隙。
这样，IGBT模组340可以更好地对第一水道130密封，进一步地提高第一水道130的密封性，更有效地避免第一水道130内的冷却液漏出。
根据本公开的一些具体实施例，如图4所示，第三水道150包括过渡段151和环形段152。过渡段151连通至第一水道130，环形段152围绕电源模块800并为电源模块800散热，环形段152的一端与过渡段151的另一端连接且环形段152的另一端设有出水孔1521。其中，环形段152的深度大于第二水道140的深度以及过渡段151的深度。
举例而言，冷却液先流入第二水道140，再流入第一水道130，然后第一水道130内的冷却液流向过渡段151，最后由过渡段151流向环形段152，从而环形段152的出水孔1521排出。并且，环形段152与电源模块800的接触面积更大，且环形段152的结构更加紧凑，占用空间更小，利用环形段152为电源模块800散热可以提高第三水道150与电源模块800的换热效果，进而使电源模块800能够快速降温，散热效果更好。
另外，环形段152的深度大于第二水道140的深度以及过渡段151的深度。这样，一方面可以使环形段152的容积更大，环形段152内的冷却液可以更多，进而提高环形段152对电源模块800的散热效果，另一方面可以使第二水道140与第一水道130之间的过渡更加平缓，以及过渡段151与第一水道130之间的过渡更加平缓，冷却液在第三水道150和第一水道130之间循环流动更加平缓，以使冷却液能够充分与电源模块800和IGBT模块进行换热，进一步提高电源模块800的散热效果和IGBT模组340的散热效果。
在本公开的一些具体实施例中，如图5所示，电动总成1还包括进水管160和出水管170。进水管160安装于箱体100且与第二水道140连通，出水管170安装于箱体100且与出水孔1521连通，进水管160和出水管170彼此垂直设置。
这样，冷却液可以通过进水管160流入第二水道140、第一水道130和第三水道150内，且冷却液可以通过出水孔1521和出水管170排出。也就是说，当冷却液与电源模块800和IGBT模组340充分换热后，第二水道140、第一水道130和第三水道150内的冷却液可以通过出水管170排出，并通过进水管160为第二水道140、第一水道130和第三水道150进行冷却液的补充，保持第二水道140、第一水道130和第三水道150内的冷却液充足，且使冷却液的温度较低，以提高第三水道150和第一水道130对电源模块800和IGBT模组340的冷却效果。
另外，进水管160和出水管170垂直设置，例如，进水管160可以设于箱体100的一侧且出水管170可以设于箱体100的相邻一侧。这样，可以避免进水管160和出水管170位置干涉，便于布置，且第三水道150和第一水道130的长度可以设置得较长，以使第三水道150和第一水道130能够覆盖箱体100的绝大部分，进一步提高了第三水道150和第一水道130对电源模块800和IGBT模组340的冷却效果。同时，第三水道150和第一水道130内的冷却液能够降低箱体100的温度，进而还可以为安装于箱体100的其他零部件进行散热，以提高箱体100的散热效果。
举例而言，如图5和图7所示，上述布置导致出水管170较长，因此可以增加压板900。压板900安装于箱体100，且与箱体100共同夹持出水管170，以固定出水管170相对于箱体100的位置。
根据本公开的一些具体实施例，如图6-图8所示，电源模块800包括电源功率板870，电源功率板870安装于电源腔体190内，电源功率板870上安装有多个器件，多个器件包括变压器820、变压器电感830、AC电感850、DC电感860和多个MOS管840。
变压器820和变压器电感830间隔排布，多个MOS管840分设于变压器820和变压器电感830的相对两侧，AC电感850和DC电感860分设于变压器820和变压器电感830的相对两侧。其中，第三水道150环绕变压器820和变压器电感830，多个MOS管840位于第三水道150的相对两侧且与第三水道150换热。
这样，第三水道150环绕变压器820和变压器电感830，多个MOS管840位于第三水道150外且与第三水道150的外壁贴合，第三水道150可以为变压器820、变压器电感830、多个MOS管840、AC电感850和DC电感860进行散热，提高了电源模块800的散热效率。
并且，AC电感850和DC电感860分设与第三水道150的相对两侧。这样，变压器电感830、AC电感850和DC电感860三者被第三水道150的侧壁间隔，降低了变压器电感830、AC电感850和DC电感860三者之间电磁干扰的概率以及影响，提高电动总成1的控制可靠性。
根据本公开的一些具体实施例，如图6和图7所示，电源腔体190设有多个MOS管腔191、AC电感腔192和DC电感腔193，AC电感850伸入AC电感腔192，DC电感860伸入DC电感腔193，多个MOS管840一一对应地伸入多个MOS管腔191。这样，进一步地避免了多个MOS管840、AC电感850、DC电感860和变压器电感830之间的电磁干扰，也可以避免干扰外部电子器件，有利于提高电磁兼容性。
下面参考图13描述根据本公开实施例的车辆1000，车辆1000包括根据本公开上述实施例的电动总成1。
根据本公开实施例的车辆1000，通过利用根据本公开上述实施例的电动总成1，不仅能够实现电池包2的自加热，而且在电池包2的自加热电路中复用了电机200的三相绕组210以及电控模块300的桥臂350，具有成本低、体积小以及零件数量少等优点。
根据本公开实施例的电动总成1和具有其的车辆的其他构成以及操作对于本领域普通技术人员而言都是已知的，这里不再详细描述。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示意性实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本公开的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或示例。
尽管已经示出和描述了本公开的实施例，本领域的普通技术人员可以理解：在不脱离本公开的原理和宗旨的情况下可以对这些实施例进行多种变化、修改、替换和变型，本公开的范围由权利要求及其等同物限定。

Claims (21)

  1. 一种电动总成(1)，其特征在于，包括：
    箱体(100)，所述箱体(100)包括电控腔体(110)；
    N线连接组件(250)，所述N线连接组件(250)的一端(2501)适于连接在两个串联的电池包(2)之间；
    电机(200)，所述电机(200)包括三相绕组(210)，所述三相绕组(210)的一端(2101)为汇接端，所述汇接端连接至所述N线连接组件(250)的另一端(2502)；以及
    电控模块(300)，所述电控模块(300)安装于所述电控腔体(110)，所述电控模块包括：
    IGBT模组(340)，所述IGBT模组(340)包括三相桥臂(350)，所述三相绕组(210)的另一端(2102)分别连接至所述三相桥臂(350)的中点，以及
    直流接插件(400)，所述直流接插件(400)的正极(4001)连接至所述汇接端，所述直流接插件(400)的负极(4002)连接至所述IGBT模组(340)，并适于连接所述电池包(2)的负极。
  2. 根据权利要求1所述的电动总成(1)，其特征在于，还包括：
    第一电容(500)，所述第一电容(500)安装于所述电控腔体(110)内且为X电容，所述第一电容(500)的一端(5001)与所述直流接插件(400)的正极(4001)连接且另一端(5002)与所述直流接插件(400)的负极(4002)连接。
  3. 根据权利要求2所述的电动总成(1)，其特征在于，还包括：
    第二电容(600)，所述第二电容(600)安装于所述电控腔体(110)内且为X电容，所述第二电容(600)的一端(6001)与所述第一电容(500)的所述一端(5001)连接且另一端(6002)与所述直流接插件(400)的正极(4001)连接；以及
    第二电容接触器(610)，所述第二电容接触器(610)安装于所述电控腔体(110)内，所述第二电容接触器(610)的一端(6101)与所述第二电容(600)的所述一端(6001)连接且所述第二电容接触器(610)的另一端(6102)与所述三相绕组(210)的所述一端(2101)连接。
  4. 根据权利要求3所述的电动总成(1)，其特征在于，还包括：
    升压电容(700)，所述升压电容(700)安装于所述电控腔体(110)内，所述升压电容(700)的一端(7001)连接于所述直流接插件(400)的负极(4002)，所述升压电容(700)的另一端(7002)与所述三相绕组(210)的所述另一端(2102)连接。
  5. 根据权利要求4所述的电动总成(1)，其特征在于，还包括：
    电容壳体(3)，所述第一电容(500)、所述第二电容(600)和所述升压电容(700)集成于所述电容壳体(3)。
  6. 根据权利要求5所述的电动总成(1)，其特征在于，还包括：
    负极输出铜排(510)，所述负极输出铜排(510)安装于所述电容壳体(3)，所述第一电容(500)和所述第二电容(600)共用所述负极输出铜排(510)。
  7. 根据权利要求5或6所述的电动总成(1)，其特征在于，所述电容壳体(3)上设有多个线束固定槽(910)，多个所述线束固定槽(910)的至少部分设于所述第二电容(600)的上方。
  8. 根据权利要求1-7中任一项所述的电动总成(1)，其特征在于，还包括：
    正极保险(410)，所述正极保险(410)安装于所述电控腔体(110)内，所述正极保险(410)的一端(4101)与所述直流接插件(400)的正极(4001)连接且另一端(4102)与每相所述桥臂(350)的上桥臂(351)连接；以及
    负极保险(420)，所述负极保险(420)安装于所述电控腔体(110)内，且所述负极保险(420)位于所述 正极保险(410)的下方，所述负极保险(420)的一端(4201)与所述直流接插件(400)的负极(4002)连接且另一端(4202)与每相所述桥臂(350)的下桥臂(352)连接。
  9. 根据权利要求1-8中任一项所述的电动总成(1)，其特征在于，还包括：
    电源模块(800)，所述箱体(100)还包括电源腔体(190)，所述电源腔体(190)设于所述电控腔体(110)的下方，所述电源模块(800)设于所述电源腔体(190)内。
  10. 根据权利要求9所述的电动总成(1)，其特征在于，所述箱体(100)内设有支架(101)，所述支架(101)将所述箱体(100)分隔为上部的所述电控腔体(110)和下部的所述电源腔体(190)，所述支架(101)上设有多个朝向所述电源腔体(190)延伸的屏蔽筋(102)，所述屏蔽筋(102)形成屏蔽腔(103)，所述屏蔽腔(103)用于安装组成所述电源模块(800)的器件。
  11. 根据权利要求9或10所述的电动总成(1)，其特征在于，所述箱体(100)还包括底板(810)，所述底板(810)用于封堵所述电源腔体(190)下方的开口(260)。
  12. 根据权利要求1-11中任一项所述的电动总成(1)，其特征在于，所述电机(200)包括：
    机壳(230)，所述三相绕组(210)设于所述机壳(230)内；以及
    端盖(240)，所述端盖(240)设于所述机壳(230)的一端并用于封堵所述机壳(230)，所述端盖(240)上开设有供所述N线连接组件(250)穿过的开口(260)。
  13. 根据权利要求12所述的电动总成(1)，其特征在于，所述N线连接组件(250)包括：
    N线(252)，所述N线(252)的一端与所述三相绕组(210)的所述一端(2101)连接；
    N线转接座(251)，所述N线转接座(251)的一端与所述N线(252)的所述一端连接；
    N线线鼻子(220)，所述N线转接座(251)的另一端穿过所述开口(260)后与所述N线线鼻子(220)的一端连接；以及
    N线接线座(253)，所述N线接线座(253)的一端与所述N线(252)的另一端连接，所述N线接线座(253)的另一端连接至所述电控模块(300)的N线铜排(3001)，所述N线铜排(3001)穿设有霍尔(3002)，所述霍尔(3002)通过信号线与所述电控模块(300)连接。
  14. 根据权利要求13所述的电动总成(1)，其特征在于，所述机壳(230)上靠近所述端盖(240)的一端设有插接槽(260)，所述插接槽(260)靠近所述电控腔体(110)设置，所述N线接线座(253)插入所述插接槽(260)，并与所述机壳(230)固定连接。
  15. 根据权利要求9-11中任一项所述的电动总成(1)，其特征在于，还包括：
    水道盖板(120)，所述水道盖板(120)设有第一水道(130)，所述电控腔体(110)设有第二水道(140)和第三水道(150)，所述水道盖板(120)与所述箱体(100)连接且封盖所述第二水道(140)和第三水道(150)，所述第一水道(130)与所述第二水道(140)和所述第三水道(150)均连通，所述第二水道(140)适于与进水管(160)连通，所述第三水道(150)适于与出水管(170)连通；
    其中，所述第二水道(140)内的冷却液流入所述第一水道(130)以为所述IGBT模组(340)散热，所述第一水道(130)内的冷却液流入所述第三水道(150)以为所述电源模块(800)散热。
  16. 根据权利要求15所述的电动总成(1)，其特征在于，还包括：
    密封圈(180)，所述水道盖板(120)设有环绕所述第一水道(130)的密封槽，所述密封圈(180)设于所述密封槽内，所述IGBT模组(340)将所述密封圈(180)压紧，所述密封圈(180)填充所述水道盖板(120)和所述IGBT模组(340)的间隙。
  17. 根据权利要求15或16所述的电动总成(1)，其特征在于，所述第三水道(150)包括：
    过渡段(151)，所述过渡段(151)连通至所述第一水道(130)；
    环形段(152)，所述环形段(152)围绕所述电源模块(800)并为所述电源模块(800)散热，所述环形段 (152)的一端与所述过渡段(151)的另一端连接且所述环形段(152)的另一端设有出水孔(1521)；
    其中，所述环形段(152)的深度大于所述第二水道(140)的深度以及所述过渡段(151)的深度。
  18. 根据权利要求15-17中任一项所述的电动总成(1)，其特征在于，所述电源模块(800)包括电源功率板(870)，所述电源功率板(870)安装于所述电源腔体(190)内，所述电源功率板(870)上安装有多个器件；
    多个所述器件包括：
    变压器(820)；
    变压器电感(830)，所述变压器电感(830)和所述变压器(820)间隔排布；
    多个MOS管(840)，多个所述MOS管(840)分设于所述变压器(820)和所述变压器电感(830)的相对两侧；
    AC电感(850)；和
    DC电感(860)，所述DC电感(860)和所述AC电感(850)分设于所述变压器(820)和所述变压器电感(830)的相对两侧；
    其中，所述第三水道(150)环绕所述变压器(820)和所述变压器电感(830)，多个所述MOS管(840)位于所述第三水道(150)的相对两侧且与所述第三水道(150)换热。
  19. 根据权利要求18所述的电动总成(1)，其特征在于，所述电源腔体(190)设有多个MOS管(840)腔(191)、AC电感腔(192)和DC电感腔(193)，所述AC电感(850)伸入所述AC电感腔(192)，所述DC电感(860)伸入所述DC电感腔(193)，多个所述MOS管(840)一一对应地伸入多个所述MOS管腔(191)。
  20. 根据权利要求1-19中任一项所述的电动总成(1)，其特征在于，所述电控模块(300)还包括：
    控制板(320)；和
    驱动板(310)，所述驱动板(310)设于所述控制板(320)的下方，
    其中，所述IGBT模组(340)设于所述驱动板(310)上，所述IGBT模组(340)与所述控制板(320)连接，
    其中，所述电动总成(1)还包括：
    屏蔽板(330)，所述屏蔽板(330)设于所述驱动板(310)和所述控制板(320)之间。
  21. 一种车辆(1000)，其特征在于，包括根据权利要求1-20中任一项所述的电动总成(1)。
PCT/CN2023/109765 2022-08-18 2023-07-28 电动总成和具有其的车辆 WO2024037309A1 (zh)

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