WO2022262215A1 - Inverter assembly - Google Patents

Inverter assembly Download PDF

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Publication number
WO2022262215A1
WO2022262215A1 PCT/CN2021/135977 CN2021135977W WO2022262215A1 WO 2022262215 A1 WO2022262215 A1 WO 2022262215A1 CN 2021135977 W CN2021135977 W CN 2021135977W WO 2022262215 A1 WO2022262215 A1 WO 2022262215A1
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WO
WIPO (PCT)
Prior art keywords
module
busbar
power generation
inverter assembly
waterway
Prior art date
Application number
PCT/CN2021/135977
Other languages
French (fr)
Chinese (zh)
Inventor
王宏宝
黄荣华
胡晶
徐德才
高一
Original Assignee
中国第一汽车股份有限公司
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Publication date
Application filed by 中国第一汽车股份有限公司 filed Critical 中国第一汽车股份有限公司
Publication of WO2022262215A1 publication Critical patent/WO2022262215A1/en

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/003—Constructional details, e.g. physical layout, assembly, wiring or busbar connections
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
    • H02K5/225—Terminal boxes or connection arrangements
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/32—Means for protecting converters other than automatic disconnection
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
    • H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
    • H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/2089—Modifications to facilitate cooling, ventilating, or heating for power electronics, e.g. for inverters for controlling motor
    • H05K7/20927—Liquid coolant without phase change

Definitions

  • the present application relates to the technical field of vehicle equipment, for example, to an inverter assembly.
  • the DC voltage is generally determined by the voltage of the power battery, and the speed range of the constant torque output of the drive motor depends on the voltage of the power battery. If the drive motor accelerates further, Then the drive motor enters the constant power range, and the acceleration capability of the vehicle decreases.
  • the inverter assembly of the dual-motor hybrid power system in the related art does not have a boost function, and the voltage is still directly provided by the power battery, which cannot output a higher voltage, so that the power system is limited to the power module limit, and the circuit There is a high parasitic inductance in which the power module cannot exert its maximum performance.
  • the present application provides an inverter assembly, which not only has a voltage boosting function, but also can reduce parasitic inductance and improve the output performance of power components.
  • the present application provides an inverter assembly, including: a boost module, a boost inductor is provided in the boost module, a power battery is connected to the boost module, and the boost module
  • the electric energy of the power battery is boosted and sent to the bus bar;
  • the drive module, the drive module and the boost module are connected as a whole through the laminated busbar;
  • the power generation module, the power generation module and the The drive modules are all connected to the busbar, the power generation module is connected to the generator through the first output copper bar, the drive module is connected to the drive motor through the second output copper bar, and the bus capacitor is divided into The first capacitor and the second capacitor connected by the transition copper bar;
  • the box assembly, the booster module, the drive module and the power generation module are all installed in the box assembly.
  • Fig. 1 is a schematic diagram of the position of the inverter assembly provided by the specific embodiment of the present application;
  • Fig. 2 is a schematic structural diagram of the power generation module in the inverter assembly provided by the specific embodiment of the present application;
  • Fig. 3 is a schematic view of the structure of the booster module and the drive module in the inverter assembly provided by the specific embodiment of the present application;
  • Fig. 4 is a structural schematic diagram of the boost module and the drive module in another perspective of the inverter assembly provided by the specific embodiment of the present application;
  • Fig. 5 is a schematic diagram of the connection between the filter and other components in the inverter assembly provided by the specific embodiment of the application;
  • Fig. 6 is a schematic diagram of the internal structure of the filter in the inverter assembly provided by the specific embodiment of the present application.
  • Fig. 7 is a bottom view of the inverter assembly provided by the specific embodiment of the present application.
  • Fig. 8 is a structural schematic diagram of the cooling structure in the inverter assembly provided by the specific embodiment of the present application.
  • Fig. 9 is a schematic structural view of the three-phase terminal block in the inverter assembly provided by the specific embodiment of the present application.
  • Fig. 10 is an exploded view of the inverter assembly provided by the specific embodiment of the present application.
  • Boost module 11. Boost inductor; 2. Drive module; 3. Laminated busbar; 4. Power generation module; 61. First capacitor; 62. Second capacitor; 7. Filter; 71 , first magnetic ring; 72, positive busbar; 73, negative busbar; 74, shell; 81, water inlet; 82, boost module waterway; 83, drive module waterway; 84, boost inductor waterway; 85 , power generation module waterway; 86, water outlet; 91, three-phase busbar; 921, connector; 922, soft connection part; 93, sealing ring; 94, three-phase magnetic ring; 101, main box; 102, upper Cover; 103, top cover; 104, driving motor; 105, generator; 106, DC high voltage connector; 107, current sensor; 108, EMI capacitor; 109, transition copper bar; 110, differential mode capacitor; 111, common mode capacitance.
  • connection should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrated ; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components or the interaction relationship between two components.
  • connection can be a fixed connection, a detachable connection, or an integrated ; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components or the interaction relationship between two components.
  • a first feature being “on” or “under” a second feature may include the first feature being in direct contact with the second feature, and may also include the first feature and the second feature. Two features are not in direct contact but through another feature between them. Moreover, “above”, “above” and “above” the first feature on the second feature include that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature. "Below”, “beneath” and “under” the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.
  • This embodiment provides an inverter assembly, as shown in Figure 1, the inverter assembly is connected to the drive motor 104 and the generator 105, as shown in Figure 2- Figure 4 and Figure 7, it includes power generation Module 4, drive module 2, step-up module 1 and box assembly, step-up module 1, drive module 2 and power generation module 4 are all installed in the box assembly, and the step-up module transfers the power
  • the electric energy of the battery is boosted and sent to the bus bar
  • the driving motor 104 and the generator 105 are connected to the bus bar
  • the power generation module 4 is connected to the generator 105 through the first output copper bar
  • the driving module 2 is connected to the generator through the second output copper bar.
  • the drive motor 104 is connected.
  • the first output copper bar and the second output copper bar are both three-phase bus bars, but they are not the same three-phase bus bar, that is, the power generation module 4 is connected to the generator 105 through a three-phase bus bar,
  • the driving module 2 is connected to the driving motor 104 through another three-phase busbar (namely the three-phase busbar 91 mentioned below).
  • the booster module 1 is provided with a booster inductor 11, the power battery is connected to the booster module 1, and the booster module 1 is connected to the bus bar, and the power battery can be connected to the busbar through the booster inductor 11 in the booster module 1.
  • the inverter assembly is integrated with a boost module 1, a drive module 2 and a power generation module 4.
  • the inverter assembly has a boost function, which can make the output of the power battery higher The voltage increases the output performance of the drive motor 104.
  • the bus capacitor is divided into a first capacitor 61 and a second capacitor 62 connected through a transition copper bar 109, and the distributed arrangement of the first capacitor 61 and the second capacitor 62 can effectively
  • the parasitic inductance in the circuit is reduced, the impulse voltage of the power components is reduced, and it is beneficial to drive the power components such as the motor 104 and the generator 105 to maximize the output performance.
  • the booster module 1 and the drive module 2 are combined so that they are spatially integrated into one group, and the internal wiring is carried out by the laminated busbar 3, so that the booster module 1 can operate in this reverse
  • the integration on the transformer assembly improves space utilization and reduces parasitic inductance in the loop.
  • the power components in this embodiment are arranged discretely, which can realize capacity expansion at different power levels.
  • the current sensor 107 adopts the on-board single-phase Hall sensor, and integrates the three-phase current sensor 107 by using a printed circuit board (PCB), and directly collects the output current value by setting it on the output copper column, effectively saving the layout space , improve the integration of the inverter assembly.
  • PCB printed circuit board
  • the inverter assembly further includes a filter 7 connected to the input end of the boost module 1 for filtering.
  • the filter 7 includes a first magnetic ring 71, a positive bus bar 72, and a negative bus bar 73.
  • the positive bus bar 72 and the negative bus bar 73 are stacked and penetrated in the first magnetic ring 71, which can effectively reduce the The volume of the first magnetic ring 71 is reduced to reduce the length of the loop path, thereby increasing the inductance of the first magnetic ring 71 and improving the filtering effect of the filter 7 .
  • a pair of common-mode capacitors 111 are integrated in the filter 7, and the common-mode capacitors 111 can improve the common-mode performance of the module.
  • a differential mode capacitor 110 is further added behind the filter 7 .
  • the filter 7 also includes a casing 74, the first magnetic ring 71, the positive busbar 72 and the negative busbar 73 are all placed in the casing 74, the casing 74 is an aluminum casing, and the installation point is in contact with the casing 74 Grounding can shield space coupling interference.
  • there are two first magnetic rings 71 there are two first magnetic rings 71, the two first magnetic rings 71 are arranged coaxially, the positive pole busbar 72 and the negative pole busbar 73 pass through the two first magnetic rings 71, and the two first The magnetic ring 71 has a good ability to shield space coupling interference, which is beneficial for the inverter assembly to achieve a high level of electromagnetic compatibility.
  • the boost module 1 in this embodiment is integrated with the drive module 2, wherein each phase circuit is composed of 8 insulated gate bipolar transistors (Insulated Gate Bipolar Transistor, IGBT) in parallel (that is, 8 IGBTs are connected in parallel to form a group and a half bridge arm); each phase circuit in the power generation module 4 is connected in parallel by 6 IGBTs.
  • IGBT Insulated Gate Bipolar Transistor
  • the electric energy of the power battery is input to the inverter assembly through the DC high-voltage connector 106, and the front end of the inverter assembly is equipped with a class II filter and an Electromagnetic Interference (EMI) capacitor 108 , the negative pole of the power battery (also can be understood as the negative pole of the bus bar) is directly introduced into multiple power modules, and the positive pole of the power battery (also can be understood as the positive pole of the bus bar) is connected to the booster module 1 through the DC positive copper bar.
  • the input terminal of the inductor 11 and the output terminal of the boost inductor 11 are connected to the input terminal of the boost module 1, and the boost module 1 boosts the electric energy of the power battery and sends it to the bus.
  • EMI Electromagnetic Interference
  • the electric energy of the power battery first increases the voltage of DC 350V to DC 800V through the step-up module 1, and then supplies the busbar.
  • the drive module 2 and the power generation module 4 realize the common busbar through the transition copper bar 109, so that the boosted
  • the electric energy supplies power to the drive motor 104 after passing through the drive module 2, and at the same time, the electric energy generated by the generator 105 is sent to the bus after passing through the power generation module 4, and finally supplies power to the drive motor 104 through the drive module 2 and through the booster module 1 Charge the power battery.
  • the arrangement of the inverter assembly makes full use of the space with different outer diameters of the stators of the drive motor 104 and the generator 105, and the internal components are arranged in irregular shapes to improve the space utilization rate of the inverter assembly.
  • the 50kW step-up module 1 is integrated into the inverter assembly to realize a high-voltage drive system under the same power battery voltage platform, which can directly reduce the switching loss of power components and improve the system Efficiency, the driving peak power is increased from 160kW to 180kW, and the peak generating power is increased from 140kW to 160kW.
  • the DC end integrates a class II filter and EMI capacitor 108, and the AC end integrates a second magnetic ring, so that the electromagnetic compatibility (Electromagnetic Compatibility, EMC) level of the inverter assembly is raised from Level3 to Level4.
  • EMC Electromagnetic Compatibility
  • a cooling structure is formed in the box assembly.
  • the cooling structure includes a water inlet 81, a booster module waterway 82, a drive module waterway 83, a booster inductor waterway 84, and a power generation module waterway.
  • the coolant can flow through water inlet 81, booster module waterway 82, drive module waterway 83, boost inductor waterway 84, power generation module waterway 85 and water outlet 86 in the box assembly components for cooling.
  • the multiple driving module waterways 83 there are multiple driving module waterways 83, and multiple driving module waterways 83 are arranged in parallel, and the multiple driving module waterways 83 are all connected in parallel with the booster module waterway 82; the power generation module waterway 85 is provided with multiple A plurality of power generation module waterways 85 are connected in parallel, and the boost inductor waterway 84 is connected between a plurality of driving module waterways 83 and a plurality of power generation module waterways 85, and a plurality of power generation module waterways 85 are all communicated with the water outlet 86.
  • the booster module waterway 82 is provided with 1 set of waterways
  • the drive module waterway 83 is provided with 3 sets of waterways
  • the 1 set of waterways of the booster module waterway 82 and the 3 sets of waterways in the drive module waterway 83 Waterway parallel setting.
  • the power generation module waterway 85 is provided with 3 sets of waterways in parallel, and the housing of the boost inductor 11 dissipates heat through contact, and the heat is transferred to the boost inductor waterway 84 below to be taken away.
  • the water path in the cooling structure stores the flow through the water inlet 81, and dissipates heat to the booster module 1 and the drive module 2 through 4 sets of parallel waterways. Afterwards, it is divided into 3 groups of parallel waterways to dissipate heat for the power generation module 4, and finally flows out through the water outlet 86 together.
  • the overall waterway diversion is complicated, the box body is a high-pressure casting, and multiple waterway junctions need rear-welded cover plates to realize the overall waterway seal; in terms of structure, different size designs are made through the calibers of multiple waterway inlets, so that all waterways can achieve Maximize current sharing.
  • the inverter assembly also includes a three-phase terminal block. As shown in FIG. It is connected to the drive module 2, and the laminated copper bar is connected to the three-phase bus bar 91.
  • the laminated copper bar is provided with a sealing ring 93, and the sealing ring 93 is set to seal and isolate the driving motor 104 and the inverter assembly.
  • the fluorosilicone rubber sealing ring is used for independent radial sealing of the laminated copper bars, and the sealing ring 93 adopts a multi-point structure at the contact point, which can increase the sealing performance.
  • the laminated copper bar includes a connector 921 and a flexible connection part 922, the flexible connection part 922 has a certain degree of flexibility, the flexible connection part 922 is connected between the connector 921 and the three-phase busbar 91, and the connector 921 is set to When the drive motor 104 is connected, the flexible connection portion 922 with a certain degree of flexibility can increase the degree of freedom of the connector 921 , and the increased degree of freedom can compensate for the lamination error of the hard connection with the bus bar of the drive motor 104 .
  • the three-phase terminal block also includes an injection molded part, the three-phase busbar 91 is integrally molded with the injection molded part, the injection molded part is provided with a groove-shaped cavity, and the three-phase magnetic ring 94 is arranged in the groove-shaped cavity, and the stacked The copper bars are arranged in the three-phase magnetic ring 94, which is beneficial to improve the electromagnetic compatibility level of the inverter assembly.
  • the bent end of the three-phase busbar 91 is welded to the laminated copper bar to make the flexible connection part 922, and then the part of the three-phase busbar 91 is subjected to injection molding process, and the exposed part of the flexible connection part 922 Do heat shrink insulation.
  • the injection molded part is provided with a groove-shaped cavity, and a three-phase magnetic ring 94 is placed in the groove-shaped cavity, and then glued and fixed in the groove-shaped cavity. Since the drive motor 104 is sealed and isolated from the inverter assembly, the drive motor 104 can be an oil-cooled motor.
  • a first cavity and a second cavity isolated from each other are formed in the box assembly, the first cavity is configured to accommodate high-voltage components, and the second cavity is configured to accommodate low-voltage control boards and low-voltage wire harnesses, so that The inverter assembly forms better high-voltage and low-voltage isolation, which can effectively avoid internal electromagnetic interference.
  • the box assembly includes a main box 101 , an upper cover 102 and a top cover 103 , which are sealed and connected to form a first cavity and a second cavity that are isolated from each other.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Inverter Devices (AREA)

Abstract

The present application relates to the technical field of vehicle devices. Disclosed is an inverter assembly, comprising: a boost module, wherein a boost inductor is arranged in the boost module, a power battery is connected to the boost module, and the boost module boosts the electric energy of the power battery and then sends the boosted electric energy to a busbar; a driving module, wherein the driving module and the boost module are connected into a whole by means of a laminated busbar trace; a power generation module, wherein both the power generation module and the driving module are connected to the busbar, the power generation module is connected to a generator by means of a first output copper bar, the driving module is connected to a drive electric motor by means of a second output copper bar, and a bus capacitor is divided into a first capacitor and a second capacitor, which are connected by means of a transition copper bar; and a box assembly, wherein the boost module, the driving module and the power generation module are all mounted in the box assembly.

Description

一种逆变器总成An inverter assembly
本申请要求在2021年6月18日提交中国专利局、申请号为202110678116.0的中国专利申请的优先权，该申请的全部内容通过引用结合在本申请中。This application claims priority to a Chinese patent application with application number 202110678116.0 filed with the China Patent Office on June 18, 2021, the entire contents of which are incorporated herein by reference.
技术领域technical field
本申请涉及车辆设备技术领域，例如涉及一种逆变器总成。The present application relates to the technical field of vehicle equipment, for example, to an inverter assembly.
背景技术Background technique
在传统的电动汽车或混合动力汽车的电驱***中，直流电压一般是由动力电池的电压决定的，驱动电机的恒转矩输出的转速范围取决于动力电池的电压，若驱动电机进一步加速，则驱动电机进入恒功率范围，车辆的加速能力下降。In the electric drive system of traditional electric vehicles or hybrid electric vehicles, the DC voltage is generally determined by the voltage of the power battery, and the speed range of the constant torque output of the drive motor depends on the voltage of the power battery. If the drive motor accelerates further, Then the drive motor enters the constant power range, and the acceleration capability of the vehicle decreases.
但是，相关技术中的双电机混和动力***的逆变器总成，并不具有升压功能，仍由动力电池直接提供电压，不能输出更高电压，使得动力***局限于功率模块限制，而且回路中存在较高的寄生电感使得功率模块无法发挥最大性能。However, the inverter assembly of the dual-motor hybrid power system in the related art does not have a boost function, and the voltage is still directly provided by the power battery, which cannot output a higher voltage, so that the power system is limited to the power module limit, and the circuit There is a high parasitic inductance in which the power module cannot exert its maximum performance.
发明内容Contents of the invention
本申请提供一种逆变器总成，该逆变器总成不仅具有升压功能，而且还能降低寄生电感，提高功率元件的输出性能。The present application provides an inverter assembly, which not only has a voltage boosting function, but also can reduce parasitic inductance and improve the output performance of power components.
本申请提供一种逆变器总成，包括：升压模组，所述升压模组中设有升压电感，动力电池连接于所述升压模组，所述升压模组将所述动力电池的电能升压后送至母线；驱动模组，所述驱动模组和所述升压模组通过叠层母排走线连为一体；发电模组，所述发电模组和所述驱动模组均连接于所述母线，所述发电模组通过第一输出铜排与发电机连接，所述驱动模组通过第二输出铜排与驱动电机相连接，母线电容被分割为通过过渡铜排连接的第一电容和第二电容；箱体总成，所述升压模组、所述驱动模组和所述发电模组均安装于所述箱体总 成中。The present application provides an inverter assembly, including: a boost module, a boost inductor is provided in the boost module, a power battery is connected to the boost module, and the boost module The electric energy of the power battery is boosted and sent to the bus bar; the drive module, the drive module and the boost module are connected as a whole through the laminated busbar; the power generation module, the power generation module and the The drive modules are all connected to the busbar, the power generation module is connected to the generator through the first output copper bar, the drive module is connected to the drive motor through the second output copper bar, and the bus capacitor is divided into The first capacitor and the second capacitor connected by the transition copper bar; the box assembly, the booster module, the drive module and the power generation module are all installed in the box assembly.
附图说明Description of drawings
图1是本申请具体实施例所提供的逆变器总成的位置示意图；Fig. 1 is a schematic diagram of the position of the inverter assembly provided by the specific embodiment of the present application;
图2是本申请具体实施例所提供的逆变器总成中发电模组的结构示意图；Fig. 2 is a schematic structural diagram of the power generation module in the inverter assembly provided by the specific embodiment of the present application;
图3是本申请具体实施例所提供的逆变器总成中升压模组和驱动模组在一个视角的结构示意图；Fig. 3 is a schematic view of the structure of the booster module and the drive module in the inverter assembly provided by the specific embodiment of the present application;
图4是本申请具体实施例所提供的逆变器总成中升压模组和驱动模组在另一视角的结构示意图；Fig. 4 is a structural schematic diagram of the boost module and the drive module in another perspective of the inverter assembly provided by the specific embodiment of the present application;
图5是本申请具体实施例所提供的逆变器总成中滤波器与其他部件的连接示意图；Fig. 5 is a schematic diagram of the connection between the filter and other components in the inverter assembly provided by the specific embodiment of the application;
图6是本申请具体实施例所提供的逆变器总成中滤波器的内部结构示意图；Fig. 6 is a schematic diagram of the internal structure of the filter in the inverter assembly provided by the specific embodiment of the present application;
图7是本申请具体实施例所提供的逆变器总成的仰视图；Fig. 7 is a bottom view of the inverter assembly provided by the specific embodiment of the present application;
图8是本申请具体实施例所提供的逆变器总成中的冷却结构的结构示意图；Fig. 8 is a structural schematic diagram of the cooling structure in the inverter assembly provided by the specific embodiment of the present application;
图9是本申请具体实施例所提供的逆变器总成中的三相接线座的结构示意图；Fig. 9 is a schematic structural view of the three-phase terminal block in the inverter assembly provided by the specific embodiment of the present application;
图10是本申请具体实施例所提供的逆变器总成的拆分图。Fig. 10 is an exploded view of the inverter assembly provided by the specific embodiment of the present application.
图中：In the picture:
1、升压模组；11、升压电感；2、驱动模组；3、叠层母排；4、发电模组；61、第一电容；62、第二电容；7、滤波器；71、第一磁环；72、正极母排；73、负极母排；74、外壳；81、进水口；82、升压模组水路；83、驱动模组水路；84、升压电感水路；85、发电模组水路；86、出水口；91、三相母排；921、连接头；922、软连接部；93、密封圈；94、三相磁环；101、主箱体；102、上盖；103、顶盖；104、驱动电机；105、发电机；106、直流高压连接器；107、电流传感器；108、EMI电容；109、过渡铜排；110、差模电容；111、共模电容。1. Boost module; 11. Boost inductor; 2. Drive module; 3. Laminated busbar; 4. Power generation module; 61. First capacitor; 62. Second capacitor; 7. Filter; 71 , first magnetic ring; 72, positive busbar; 73, negative busbar; 74, shell; 81, water inlet; 82, boost module waterway; 83, drive module waterway; 84, boost inductor waterway; 85 , power generation module waterway; 86, water outlet; 91, three-phase busbar; 921, connector; 922, soft connection part; 93, sealing ring; 94, three-phase magnetic ring; 101, main box; 102, upper Cover; 103, top cover; 104, driving motor; 105, generator; 106, DC high voltage connector; 107, current sensor; 108, EMI capacitor; 109, transition copper bar; 110, differential mode capacitor; 111, common mode capacitance.
具体实施方式detailed description
下面将结合附图对本申请实施例的技术方案做详细描述。The technical solutions of the embodiments of the present application will be described in detail below with reference to the accompanying drawings.
在本申请的描述中，除非另有明确的规定和限定，术语“相连”、“连接”、“固定”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本申请中的具体含义。In the description of this application, unless otherwise clearly specified and limited, the terms "connected", "connected" and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrated ; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components or the interaction relationship between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in this application in specific situations.
在本申请中，除非另有明确的规定和限定，第一特征在第二特征之“上”或之“下”可以包括第一特征和第二特征直接接触，也可以包括第一特征和第二特征不是直接接触而是通过它们之间的另外的特征接触。而且，第一特征在第二特征“之上”、“上方”和“上面”包括第一特征在第二特征正上方和斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”包括第一特征在第二特征正下方和斜下方，或仅仅表示第一特征水平高度小于第二特征。In this application, unless otherwise clearly specified and limited, a first feature being "on" or "under" a second feature may include the first feature being in direct contact with the second feature, and may also include the first feature and the second feature. Two features are not in direct contact but through another feature between them. Moreover, "above", "above" and "above" the first feature on the second feature include that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature. "Below", "beneath" and "under" the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.
本实施例提供一种逆变器总成，如图1所示，该逆变器总成连接于驱动电机104和发电机105上，如图2-图4以及图7所示，其包括发电模组4、驱动模组2、升压模组1和箱体总成，升压模组1、驱动模组2和发电模组4均安装于箱体总成中，升压模组将动力电池的电能升压后送至母线，驱动电机104和发电机105均与母线相连接，发电模组4通过第一输出铜排与发电机105连接，驱动模组2通过第二输出铜排与驱动电机104相连接。示例性的，第一输出铜排、第二输出铜排均为三相母排，但是两者不是同一个三相母排，即发电模组4通过一个三相母排与发电机105连接，驱动模组2通过另一个三相母排(即下文中提到的三相母排91)与驱动电机104相连接。升压模组1中设有升压电感11，动力电池连接于升压模组1，升压模组1连接于母线上，动力电池能够通过升压模组1中的升压电感11向母线提供升压后的输出电压，该逆变器总成集成 有升压模组1、驱动模组2和发电模组4，该逆变器总成具有升压功能，能够使动力电池输出更高的电压，提高了驱动电机104的输出性能。This embodiment provides an inverter assembly, as shown in Figure 1, the inverter assembly is connected to the drive motor 104 and the generator 105, as shown in Figure 2-Figure 4 and Figure 7, it includes power generation Module 4, drive module 2, step-up module 1 and box assembly, step-up module 1, drive module 2 and power generation module 4 are all installed in the box assembly, and the step-up module transfers the power The electric energy of the battery is boosted and sent to the bus bar, the driving motor 104 and the generator 105 are connected to the bus bar, the power generation module 4 is connected to the generator 105 through the first output copper bar, and the driving module 2 is connected to the generator through the second output copper bar. The drive motor 104 is connected. Exemplarily, the first output copper bar and the second output copper bar are both three-phase bus bars, but they are not the same three-phase bus bar, that is, the power generation module 4 is connected to the generator 105 through a three-phase bus bar, The driving module 2 is connected to the driving motor 104 through another three-phase busbar (namely the three-phase busbar 91 mentioned below). The booster module 1 is provided with a booster inductor 11, the power battery is connected to the booster module 1, and the booster module 1 is connected to the bus bar, and the power battery can be connected to the busbar through the booster inductor 11 in the booster module 1. Provide a boosted output voltage. The inverter assembly is integrated with a boost module 1, a drive module 2 and a power generation module 4. The inverter assembly has a boost function, which can make the output of the power battery higher The voltage increases the output performance of the drive motor 104.
其中，如图2-图4以及图7所示，母线电容被分割为通过过渡铜排109连接的第一电容61和第二电容62，第一电容61和第二电容62分布式布置可有效减小回路中的寄生电感，降低了功率元件的冲击电压，有利于驱动电机104和发电机105等功率元件最大限度地发挥输出性能。Wherein, as shown in FIG. 2-FIG. 4 and FIG. 7, the bus capacitor is divided into a first capacitor 61 and a second capacitor 62 connected through a transition copper bar 109, and the distributed arrangement of the first capacitor 61 and the second capacitor 62 can effectively The parasitic inductance in the circuit is reduced, the impulse voltage of the power components is reduced, and it is beneficial to drive the power components such as the motor 104 and the generator 105 to maximize the output performance.
在本实施例中，将升压模组1与驱动模组2合并，使得两者在空间上集成为一组，内部由叠层母排3进行走线，实现升压模组1在该逆变器总成上的集成，提高了空间利用率，并降低回路中的寄生电感。另外，本实施例中的功率元件采用分立式设置，可以实现不同功率等级下的扩容。电流传感器107采用板载单相霍尔传感器，利用印刷电路板(Printed Circuit Board，PCB)将三相的电流传感器107集成，通过套在输出铜柱上直接采集输出的电流值，有效节省布置空间，提高该逆变器总成的集成度。In this embodiment, the booster module 1 and the drive module 2 are combined so that they are spatially integrated into one group, and the internal wiring is carried out by the laminated busbar 3, so that the booster module 1 can operate in this reverse The integration on the transformer assembly improves space utilization and reduces parasitic inductance in the loop. In addition, the power components in this embodiment are arranged discretely, which can realize capacity expansion at different power levels. The current sensor 107 adopts the on-board single-phase Hall sensor, and integrates the three-phase current sensor 107 by using a printed circuit board (PCB), and directly collects the output current value by setting it on the output copper column, effectively saving the layout space , improve the integration of the inverter assembly.
可选地，如图5-图7所示，该逆变器总成还包括滤波器7，滤波器7连接于升压模组1的输入端进行滤波。示例性地，滤波器7包括第一磁环71、正极母排72和负极母排73，正极母排72和负极母排73叠层布置且穿设于第一磁环71中，可以有效减小第一磁环71的体积，降低环路路径的长度，进而增加第一磁环71的电感量，提升该滤波器7的滤波效果。示例性地，滤波器7中集成有一对共模电容111，共模电容111能够改善模块的共模表现。可选地，滤波器7的后部还加设有差模电容110。Optionally, as shown in FIGS. 5-7 , the inverter assembly further includes a filter 7 connected to the input end of the boost module 1 for filtering. Exemplarily, the filter 7 includes a first magnetic ring 71, a positive bus bar 72, and a negative bus bar 73. The positive bus bar 72 and the negative bus bar 73 are stacked and penetrated in the first magnetic ring 71, which can effectively reduce the The volume of the first magnetic ring 71 is reduced to reduce the length of the loop path, thereby increasing the inductance of the first magnetic ring 71 and improving the filtering effect of the filter 7 . Exemplarily, a pair of common-mode capacitors 111 are integrated in the filter 7, and the common-mode capacitors 111 can improve the common-mode performance of the module. Optionally, a differential mode capacitor 110 is further added behind the filter 7 .
在本实施例中，滤波器7还包括外壳74，第一磁环71、正极母排72和负极母排73均置于外壳74中，外壳74为铝制壳体，安装点与外壳74接触接地，可屏蔽空间耦合干扰。可选地，第一磁环71设有两个，两个第一磁环71同轴设置，正极母排72和负极母排73穿设于两个第一磁环71中，两个第一磁环71具有良好的屏蔽空间耦合干扰的能力，有利于该逆变器总成实现高电磁兼容等级。In this embodiment, the filter 7 also includes a casing 74, the first magnetic ring 71, the positive busbar 72 and the negative busbar 73 are all placed in the casing 74, the casing 74 is an aluminum casing, and the installation point is in contact with the casing 74 Grounding can shield space coupling interference. Optionally, there are two first magnetic rings 71, the two first magnetic rings 71 are arranged coaxially, the positive pole busbar 72 and the negative pole busbar 73 pass through the two first magnetic rings 71, and the two first The magnetic ring 71 has a good ability to shield space coupling interference, which is beneficial for the inverter assembly to achieve a high level of electromagnetic compatibility.
本实施例中的升压模组1与驱动模组2集成，其中每相电路均由8管绝缘栅双极型晶体管(Insulated Gate Bipolar Transistor，IGBT)并联(即8个IGBT并联组成一组半桥桥臂)；发电模组4中每相电路由6管IGBT并联。如图7所示，动力电池的电能经直流高压连接器106输入至该逆变器总成，该逆变器总成的前端布置有Ⅱ级滤波器及电磁干扰(Electromagnetic Interference，EMI)电容108，动力电池的负极(也可理解为母线的负极)直接引入多个功率模块中，动力电池的正极(也可理解为母线的正极)经直流正铜排连接至升压模组1的升压电感11的输入端，升压电感11的输出端连接至升压模组1的输入端，升压模组1将动力电池的电能升压后送至母线。动力电池的电能先经过升压模组1将直流350V的电压升至直流800V的电压，再供给母线，驱动模组2及发电模组4经过过渡铜排109实现共母线，使得升压后的电能经过驱动模组2后给驱动电机104供电，同时发电机105产生的电能经过发电模组4后将电能送至母线上，最终通过驱动模组2给驱动电机104供电和通过升压模组1给动力电池充电。The boost module 1 in this embodiment is integrated with the drive module 2, wherein each phase circuit is composed of 8 insulated gate bipolar transistors (Insulated Gate Bipolar Transistor, IGBT) in parallel (that is, 8 IGBTs are connected in parallel to form a group and a half bridge arm); each phase circuit in the power generation module 4 is connected in parallel by 6 IGBTs. As shown in Figure 7, the electric energy of the power battery is input to the inverter assembly through the DC high-voltage connector 106, and the front end of the inverter assembly is equipped with a class II filter and an Electromagnetic Interference (EMI) capacitor 108 , the negative pole of the power battery (also can be understood as the negative pole of the bus bar) is directly introduced into multiple power modules, and the positive pole of the power battery (also can be understood as the positive pole of the bus bar) is connected to the booster module 1 through the DC positive copper bar. The input terminal of the inductor 11 and the output terminal of the boost inductor 11 are connected to the input terminal of the boost module 1, and the boost module 1 boosts the electric energy of the power battery and sends it to the bus. The electric energy of the power battery first increases the voltage of DC 350V to DC 800V through the step-up module 1, and then supplies the busbar. The drive module 2 and the power generation module 4 realize the common busbar through the transition copper bar 109, so that the boosted The electric energy supplies power to the drive motor 104 after passing through the drive module 2, and at the same time, the electric energy generated by the generator 105 is sent to the bus after passing through the power generation module 4, and finally supplies power to the drive motor 104 through the drive module 2 and through the booster module 1 Charge the power battery.
需要说明的是，该逆变器总成的布置充分利用驱动电机104和发电机105定子外径不等的空间，将内部器件做异形布置，提高逆变器总成的空间利用率。在同等动力总成的边界条件下，将50kW升压模组1集成至该逆变器总成中，实现同动力电池电压平台下的高压驱动***，可直接降低功率元件的开关损耗，提升***效率，将驱动峰值功率由160kW升至180kW，发电峰值功率由140kW升至160kW。另外，直流端集成Ⅱ级滤波器及EMI电容108，交流端集成第二磁环，使得该逆变器总成的电磁兼容性(Electromagnetic Compatibility，EMC)等级由Level3提升至Level4。It should be noted that the arrangement of the inverter assembly makes full use of the space with different outer diameters of the stators of the drive motor 104 and the generator 105, and the internal components are arranged in irregular shapes to improve the space utilization rate of the inverter assembly. Under the boundary conditions of the same powertrain, the 50kW step-up module 1 is integrated into the inverter assembly to realize a high-voltage drive system under the same power battery voltage platform, which can directly reduce the switching loss of power components and improve the system Efficiency, the driving peak power is increased from 160kW to 180kW, and the peak generating power is increased from 140kW to 160kW. In addition, the DC end integrates a class II filter and EMI capacitor 108, and the AC end integrates a second magnetic ring, so that the electromagnetic compatibility (Electromagnetic Compatibility, EMC) level of the inverter assembly is raised from Level3 to Level4.
可选地，箱体总成中形成有冷却结构，如图8所示，冷却结构包括进水口81、升压模组水路82、驱动模组水路83、升压电感水路84、发电模组水路85和出水口86，冷却液能够依次流经进水口81、升压模组水路82、驱动模组水路83、升压电感水路84、发电模组水路85和出水口86对箱体总成中的零部件进行冷却。示例性地，驱动模组水路83设有多个，多个驱动模组水路83并联设 置，且多个驱动模组水路83均与升压模组水路82并联；发电模组水路85设有多个，多个发电模组水路85并联，升压电感水路84连通于多个驱动模组水路83和多个发电模组水路85之间，多个发电模组水路85均与出水口86连通。Optionally, a cooling structure is formed in the box assembly. As shown in FIG. 8, the cooling structure includes a water inlet 81, a booster module waterway 82, a drive module waterway 83, a booster inductor waterway 84, and a power generation module waterway. 85 and water outlet 86, the coolant can flow through water inlet 81, booster module waterway 82, drive module waterway 83, boost inductor waterway 84, power generation module waterway 85 and water outlet 86 in the box assembly components for cooling. Exemplarily, there are multiple driving module waterways 83, and multiple driving module waterways 83 are arranged in parallel, and the multiple driving module waterways 83 are all connected in parallel with the booster module waterway 82; the power generation module waterway 85 is provided with multiple A plurality of power generation module waterways 85 are connected in parallel, and the boost inductor waterway 84 is connected between a plurality of driving module waterways 83 and a plurality of power generation module waterways 85, and a plurality of power generation module waterways 85 are all communicated with the water outlet 86.
在本实施例中，升压模组水路82设有1组水路，驱动模组水路83设有3组水路，并且升压模组水路82的1组水路和驱动模组水路83中的3组水路并联设置。发电模组水路85并联设有3组水路，升压电感11的壳体通过接触进行散热，热量传至下方的升压电感水路84被带走。In this embodiment, the booster module waterway 82 is provided with 1 set of waterways, the drive module waterway 83 is provided with 3 sets of waterways, and the 1 set of waterways of the booster module waterway 82 and the 3 sets of waterways in the drive module waterway 83 Waterway parallel setting. The power generation module waterway 85 is provided with 3 sets of waterways in parallel, and the housing of the boost inductor 11 dissipates heat through contact, and the heat is transferred to the boost inductor waterway 84 below to be taken away.
冷却结构中的水路经进水口81蓄流，通过4组并联水路给升压模组1及驱动模组2散热，汇总后经箱体总成中的转向结构，流经升压电感11底面，之后分为3组并联水路给发电模组4散热，最后汇总经出水口86流出。整体水路分流复杂，箱体总成为高压铸造件，多个水路转接处需要后焊接盖板实现整体水路密封；在结构上通过多个水路入水口的口径进行不同尺寸设计，将所有水路做到均流最大化。The water path in the cooling structure stores the flow through the water inlet 81, and dissipates heat to the booster module 1 and the drive module 2 through 4 sets of parallel waterways. Afterwards, it is divided into 3 groups of parallel waterways to dissipate heat for the power generation module 4, and finally flows out through the water outlet 86 together. The overall waterway diversion is complicated, the box body is a high-pressure casting, and multiple waterway junctions need rear-welded cover plates to realize the overall waterway seal; in terms of structure, different size designs are made through the calibers of multiple waterway inlets, so that all waterways can achieve Maximize current sharing.
在本实施例中，该逆变器总成还包括三相接线座，如图9所示，三相接线座包括三相母排91、叠层铜排和密封圈93，三相母排91与驱动模组2连接，叠层铜排和三相母排91连接，叠层铜排上设有密封圈93，密封圈93设置为将驱动电机104和逆变器总成密封隔离，此处利用氟硅橡胶密封圈对叠层铜排做独立径向密封，密封圈93与接触处采用多点式结构，可以增加密封性。In this embodiment, the inverter assembly also includes a three-phase terminal block. As shown in FIG. It is connected to the drive module 2, and the laminated copper bar is connected to the three-phase bus bar 91. The laminated copper bar is provided with a sealing ring 93, and the sealing ring 93 is set to seal and isolate the driving motor 104 and the inverter assembly. Here The fluorosilicone rubber sealing ring is used for independent radial sealing of the laminated copper bars, and the sealing ring 93 adopts a multi-point structure at the contact point, which can increase the sealing performance.
可选地，叠层铜排包括连接头921和软连接部922，软连接部922具有一定挠度，软连接部922连接于连接头921和三相母排91之间，连接头921设置为与驱动电机104连接，具有一定挠度的软连接部922能够增加连接头921的自由度，增加的自由度可以弥补与驱动电机104汇流排硬连接的贴合误差。示例性地，三相接线座还包括注塑件，三相母排91与注塑件一体成型制成，注塑件中设有槽型腔体，槽型腔体中设置三相磁环94，叠层铜排穿设于三相磁环94中，有利于提高该逆变器总成的电磁兼容等级。Optionally, the laminated copper bar includes a connector 921 and a flexible connection part 922, the flexible connection part 922 has a certain degree of flexibility, the flexible connection part 922 is connected between the connector 921 and the three-phase busbar 91, and the connector 921 is set to When the drive motor 104 is connected, the flexible connection portion 922 with a certain degree of flexibility can increase the degree of freedom of the connector 921 , and the increased degree of freedom can compensate for the lamination error of the hard connection with the bus bar of the drive motor 104 . Exemplarily, the three-phase terminal block also includes an injection molded part, the three-phase busbar 91 is integrally molded with the injection molded part, the injection molded part is provided with a groove-shaped cavity, and the three-phase magnetic ring 94 is arranged in the groove-shaped cavity, and the stacked The copper bars are arranged in the three-phase magnetic ring 94, which is beneficial to improve the electromagnetic compatibility level of the inverter assembly.
在三相接线座中，将折弯后的三相母排91引出端焊接叠层铜排做软连接部 922，再将三相母排91部分做注塑工艺处理，软连接部922露出的部分做热缩绝缘处理。注塑件上设置有槽型腔体，槽型腔体中放置三相磁环94，再在槽型腔体内做灌胶固定。由于驱动电机104和逆变器总成之间做了密封隔离，驱动电机104可以为油冷式电机。In the three-phase terminal block, the bent end of the three-phase busbar 91 is welded to the laminated copper bar to make the flexible connection part 922, and then the part of the three-phase busbar 91 is subjected to injection molding process, and the exposed part of the flexible connection part 922 Do heat shrink insulation. The injection molded part is provided with a groove-shaped cavity, and a three-phase magnetic ring 94 is placed in the groove-shaped cavity, and then glued and fixed in the groove-shaped cavity. Since the drive motor 104 is sealed and isolated from the inverter assembly, the drive motor 104 can be an oil-cooled motor.
可选地，箱体总成中形成相互隔离的第一腔体和第二腔体，第一腔体设置为容置高压元件，第二腔体设置为容置低压控制板及低压线束，使得该逆变器总成形成较好的高、低压隔离，能够有效避免内部电磁干扰。示例性地，如图10所示，箱体总成包括主箱体101、上盖102及顶盖103，密封连接后形成相互隔离的第一腔体和第二腔体。Optionally, a first cavity and a second cavity isolated from each other are formed in the box assembly, the first cavity is configured to accommodate high-voltage components, and the second cavity is configured to accommodate low-voltage control boards and low-voltage wire harnesses, so that The inverter assembly forms better high-voltage and low-voltage isolation, which can effectively avoid internal electromagnetic interference. Exemplarily, as shown in FIG. 10 , the box assembly includes a main box 101 , an upper cover 102 and a top cover 103 , which are sealed and connected to form a first cavity and a second cavity that are isolated from each other.

Claims (10)

  1. 一种逆变器总成，包括：An inverter assembly, comprising:
    升压模组(1)，所述升压模组(1)中设有升压电感(11)，动力电池连接于所述升压模组(1)，所述升压模组(1)将所述动力电池的电能升压后送至母线；A boost module (1), the boost inductor (11) is provided in the boost module (1), the power battery is connected to the boost module (1), and the boost module (1) Boosting the electric energy of the power battery and sending it to the bus bar;
    驱动模组(2)，所述驱动模组(2)和所述升压模组(1)通过叠层母排(3)走线连为一体；A driving module (2), the driving module (2) and the boosting module (1) are connected as a whole through a laminated busbar (3);
    发电模组(4)，所述发电模组(4)和所述驱动模组(2)均连接于所述母线，所述发电模组(4)通过第一输出铜排与发电机(105)连接，所述驱动模组(2)通过第二输出铜排与驱动电机(104)相连接，母线电容被分割为通过过渡铜排(109)连接的第一电容(61)和第二电容(62)；A power generation module (4), the power generation module (4) and the drive module (2) are both connected to the bus bar, and the power generation module (4) is connected to the generator (105) through the first output copper bar ) connection, the drive module (2) is connected to the drive motor (104) through the second output copper bar, and the bus capacitor is divided into the first capacitor (61) and the second capacitor connected through the transition copper bar (109) (62);
    箱体总成，所述升压模组(1)、所述驱动模组(2)和所述发电模组(4)均安装于所述箱体总成中。The box assembly, the step-up module (1), the drive module (2) and the power generation module (4) are all installed in the box assembly.
  2. 根据权利要求1所述的逆变器总成，还包括滤波器(7)，所述滤波器(7)连接于所述升压模组(1)的输入端，所述滤波器(7)包括第一磁环(71)、正极母排(72)和负极母排(73)，所述正极母排(72)和所述负极母排(73)叠层布置且穿设于所述第一磁环(71)中。The inverter assembly according to claim 1, further comprising a filter (7), the filter (7) is connected to the input end of the step-up module (1), and the filter (7) It includes a first magnetic ring (71), a positive pole busbar (72) and a negative pole busbar (73), the positive pole busbar (72) and the negative pole busbar (73) are stacked and arranged through the first In a magnetic ring (71).
  3. 根据权利要求2所述的逆变器总成，其中，所述滤波器(7)还包括外壳(74)，所述第一磁环(71)、所述正极母排(72)和所述负极母排(73)均置于所述外壳(74)中，所述外壳(74)为铝制壳体。The inverter assembly according to claim 2, wherein the filter (7) further comprises a casing (74), the first magnetic ring (71), the positive busbar (72) and the The negative electrode busbars (73) are all placed in the casing (74), and the casing (74) is an aluminum casing.
  4. 根据权利要求2所述的逆变器总成，其中，所述第一磁环(71)设有两个，两个所述第一磁环(71)同轴设置，所述正极母排(72)和所述负极母排(73)穿设于两个所述第一磁环(71)中。The inverter assembly according to claim 2, wherein there are two first magnetic rings (71), the two first magnetic rings (71) are coaxially arranged, and the positive pole busbar ( 72) and the negative busbar (73) are passed through the two first magnetic rings (71).
  5. 根据权利要求1所述的逆变器总成，其中，所述箱体总成中形成有冷却结构，所述冷却结构包括进水口(81)、升压模组水路(82)、驱动模组水路(83)、升压电感水路(84)、发电模组水路(85)和出水口(86)，冷却液能够依次流经所述进水口(81)、所述升压模组水路(82)、所述驱动模组水路(83)、所述升压电感水路(84)、所述发电模组水路(85)和所述出水口(86)进行冷却。The inverter assembly according to claim 1, wherein a cooling structure is formed in the box assembly, and the cooling structure includes a water inlet (81), a booster module waterway (82), a drive module Waterway (83), boost inductor waterway (84), power generation module waterway (85) and water outlet (86), cooling liquid can flow through described water inlet (81), described booster module waterway (82) ), the drive module waterway (83), the boost inductor waterway (84), the power generation module waterway (85) and the water outlet (86) for cooling.
  6. 根据权利要求5所述的逆变器总成，其中，所述驱动模组水路(83)设有多个，多个所述驱动模组水路(83)并联设置；多个所述驱动模组水路(83)均与所述升压模组水路(82)并联；所述发电模组水路(85)设有多个，多个所述发电模组水路(85)并联。The inverter assembly according to claim 5, wherein a plurality of said driving module waterways (83) are arranged in parallel; a plurality of said driving module waterways (83) are arranged in parallel; The waterways (83) are all connected in parallel with the booster module waterways (82); the power generation module waterways (85) are provided in multiples, and the multiple power generation module waterways (85) are connected in parallel.
  7. 根据权利要求1所述的逆变器总成，还包括三相接线座，所述三相接线座包括三相母排(91)、叠层铜排和密封圈(93)，所述三相母排(91)与所述驱动模组(2)连接，所述叠层铜排和所述三相母排(91)连接，所述叠层铜排上设有密封圈(93)，所述密封圈(93)设置为将所述驱动电机(104)和所述逆变器总成密封隔离。The inverter assembly according to claim 1, further comprising a three-phase terminal block, the three-phase terminal block comprising a three-phase bus bar (91), a laminated copper bar and a sealing ring (93), the three-phase The busbar (91) is connected to the driving module (2), the laminated copper bar is connected to the three-phase busbar (91), and a sealing ring (93) is arranged on the laminated copper bar. The sealing ring (93) is configured to seal and isolate the drive motor (104) from the inverter assembly.
  8. 根据权利要求7所述的逆变器总成，其中，所述三相接线座还包括注塑件，所述三相母排(91)与所述注塑件一体成型，所述注塑件中设有槽型腔体，所述槽型腔体中设置三相磁环(94)，所述叠层铜排穿设于所述三相磁环(94)中。The inverter assembly according to claim 7, wherein the three-phase terminal block further comprises an injection molded part, the three-phase busbar (91) is integrally formed with the injection molded part, and the injection molded part is provided with A slot-shaped cavity, a three-phase magnetic ring (94) is arranged in the slot-shaped cavity, and the laminated copper bars are arranged in the three-phase magnetic ring (94).
  9. 根据权利要求7所述的逆变器总成，其中，所述叠层铜排包括连接头(921)和软连接部(922)，所述软连接部(922)具有一定挠度，所述软连接部(922)连接于所述连接头(921)和所述三相母排(91)之间，所述连接头(921)设置为与所述驱动电机(104)连接。The inverter assembly according to claim 7, wherein the laminated copper bar comprises a connection head (921) and a soft connection part (922), the soft connection part (922) has a certain degree of flexibility, and the soft connection part (922) has a certain degree of flexibility. The connection part (922) is connected between the connection head (921) and the three-phase busbar (91), and the connection head (921) is configured to be connected to the driving motor (104).
  10. 根据权利要求1所述的逆变器总成，其中，所述箱体总成中形成相互隔离的第一腔体和第二腔体，所述第一腔体设置为容置高压元件，所述第二腔体设置为容置低压控制板及低压线束。The inverter assembly according to claim 1, wherein a first cavity and a second cavity isolated from each other are formed in the box assembly, and the first cavity is configured to accommodate high-voltage components, so The second cavity is configured to accommodate the low-voltage control board and the low-voltage wiring harness.
PCT/CN2021/135977 2021-06-18 2021-12-07 Inverter assembly WO2022262215A1 (en)

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