Capacitor module, motor controller and power assembly
By designing the output copper row stack structure of the capacitor module, the parasitic inductance between the capacitor module and the power module is reduced, the problem of overheating of the capacitor module is solved, and the output capability is improved.
Patent Information
- Application Number
- CN202420099844.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-15
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-01-15
AI Technical Summary
In existing motor controllers, the parasitic inductance between the capacitor module and the power module is too high, resulting in overheating of the capacitor module and reducing the ability to output DC power.
A capacitor module is designed, wherein the other ends of the positive electrode output copper row and the negative electrode output copper row are arranged laminated, and a plurality of first avoidance ports and second avoidance ports are arranged interlaced in the projection in the first direction to increase the lamination area. , reduce parasitic inductance.
By reducing the parasitic inductance between the capacitor module and the power module, the risk of overheating of the capacitor module is reduced and its ability to output DC is improved.
Smart Images
Figure CN222507362U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of motor controllers, and in particular to a capacitor module, a motor controller and a powertrain. Background Art
[0002] At present, electric vehicles represented by pure electric and hybrid are becoming more and more popular among consumers. As the most important component in electric vehicles, the performance of the motor controller directly affects the performance of the vehicle.
[0003] The motor controller includes a capacitor module and a power module that are electrically connected. The capacitor module outputs direct current to the power module, and the power module converts direct current into alternating current. When the power module is switched on and off, there is a parasitic inductance between the output copper bus of the capacitor module and the input copper bus of the power module. The parasitic inductance will cause the pressure of the capacitor module to be too high, causing the capacitor module to overheat and reducing its ability to output direct current.
[0004] Therefore, how to reduce the parasitic capacitance between the power capacitor module and the power module becomes an urgent problem to be solved. Utility Model Content
[0005] The embodiments of the present application provide a capacitor module, a motor controller and a power assembly. The capacitor module can reduce the parasitic capacitance between the capacitor module and the power module.
[0006] In a first aspect, the present application provides a capacitor module, which includes a capacitor core package, a positive output copper bar, and a negative output copper bar. One end of the positive output copper bar and one end of the negative output copper bar are arranged on both sides of the capacitor core package along a first direction, the other end of the positive output copper bar extends to the outside of the capacitor core package, the other end of the negative output copper bar extends to the outside of the capacitor core package, the other end of the positive output copper bar and the other end of the negative output copper bar are stacked along the first direction, wherein: the other end of the positive output copper bar includes a plurality of first avoidance openings, and the plurality of first avoidance openings are arranged at intervals along the second direction, the other end of the negative output copper bar includes a plurality of second avoidance openings, and the plurality of second avoidance openings are arranged at intervals along the second direction, and in the projection of the first direction, the plurality of first avoidance openings and the plurality of second avoidance openings are staggered. The capacitor module in the present application includes the other end of the positive output copper bar and the other end of the negative output copper bar, which are stacked. When the power module is electrically connected to the capacitor module, the other end of the positive output copper bar and the other end of the negative output copper bar are stacked except for the first avoidance opening and the second avoidance opening, so that the stacking area between the positive output copper bar and the negative output copper bar is increased, and when direct current passes through the positive output copper bar and the negative output copper bar, the parasitic inductance between the positive output copper bar and the negative output copper bar is reduced.
[0007] One end of the positive output copper bar is electrically connected to the positive pole of the capacitor core package, and one end of the negative output copper bar is electrically connected to the negative pole of the capacitor core package, so that the positive output copper bar and the negative output copper bar are electrically connected to the capacitor core package.
[0008] In one embodiment, the other end of the positive output copper bar includes a plurality of protrusions, the plurality of protrusions are arranged at intervals along the second direction, a first avoidance opening is arranged between two adjacent protrusions, and the protrusion is used to pass through the second avoidance opening. The arrangement of the protrusions enables the other ends of the positive output copper bar and the negative output copper bar to be embedded in each other, so as to facilitate the alignment of the other end of the positive output copper bar and the other end of the negative output copper bar.
[0009] In one embodiment, the other end of the negative output copper bar includes a plurality of connection parts, the plurality of connection parts are arranged at intervals along the second direction, a second avoidance opening is formed between two adjacent connection parts, and in the projection in the first direction, the connection part covers the first avoidance opening, and the connection part is stacked with the other end of the positive output copper bar. The connection part corresponds to the first avoidance opening to electrically connect the positive input copper bar and the positive output copper bar included in the power module, and the connection part is stacked with the positive output copper bar except for the first avoidance opening and the protrusion, which can reduce the parasitic inductance between the positive output copper bar and the negative output copper bar.
[0010] In one embodiment, the capacitor module includes an insulating plate, and the insulating plate is located between the negative output copper bar and the positive output copper bar along the first direction. The insulating plate can prevent cross-current between the negative output copper bar and the positive output copper bar.
[0011] In one embodiment, the length of the insulating plate along the second direction is greater than the length of the other end of the negative output copper bar and the length of the other end of the positive output copper bar along the second direction, and the length of the insulating plate along the third direction is greater than the length of the other end of the negative output copper bar and the length of the other end of the positive output copper bar along the third direction, so as to prevent current from flowing between the negative output copper bar and the positive output copper bar.
[0012] In one embodiment, the insulating plate includes a main body, the main body includes a plurality of first positioning holes and a plurality of second positioning holes, the plurality of first positioning holes are arranged at intervals along the second direction, the plurality of second positioning holes are arranged at intervals along the second direction, and the plurality of first positioning holes and the plurality of second positioning holes are arranged staggered along the second direction; the protrusion passes through the first positioning hole along the first direction, and the second positioning hole is located between the connecting portion and the first avoidance opening along the first direction. The provision of the first positioning hole and the second positioning hole can ensure that when the capacitor module is connected to the power module, the positive input copper bar and the negative input copper bar included in the power module are electrically connected to the positive output copper bar and the negative output copper bar respectively.
[0013] In one embodiment, the insulating plate includes a plurality of first enclosures, the plurality of first enclosures are arranged at intervals along the second direction, one end of the first enclosure is connected to the inner wall of the first positioning hole, and the other end of the first enclosure extends toward one end of the second avoidance opening. The arrangement of the first enclosure can ensure that the protrusion is not electrically connected to the negative output copper busbar.
[0014] In one embodiment, the insulating plate includes a plurality of second enclosures, the plurality of second enclosures are arranged at intervals along the second direction, one end of the second enclosure is connected to the inner wall of the second positioning hole, and the other end of the second enclosure extends toward one end of the first avoidance. The second enclosure is arranged to ensure that the inner wall of the first avoidance is not electrically connected to the positive output copper busbar.
[0015] In one embodiment, the capacitor module includes a capacitor housing, the capacitor housing includes a housing cavity, the housing cavity is used to accommodate the capacitor core package, one end of the positive output copper bar and one end of the negative output copper bar are located between the capacitor core package and the capacitor housing, and the other end of the positive output copper bar and the other end of the negative output copper bar extend to the outside of the capacitor housing, so as to facilitate the electrical connection between the capacitor module and the power module.
[0016] In a second aspect, the present application provides a motor controller, which includes at least one group of power modules and the capacitor module in any technical solution of the first aspect, the capacitor core package and at least one group of power modules are arranged at intervals along the third direction, and the positive output copper bar and the negative output copper bar are electrically connected to the at least one group of power modules. Wherein, at least one group of power modules includes a plurality of power modules arranged at intervals along the second direction, and each power module includes a positive input copper bar and a negative input copper bar arranged at intervals along the second direction. The positive input copper bar is electrically connected to the protrusion included in the positive output copper bar, and the negative input copper bar is electrically connected to the other end of the negative output copper bar through the first avoidance port. In this manner, the positive output copper busbar is electrically connected to the other end of the positive output copper busbar through the protrusion, and the negative input copper busbar is electrically connected to the other end of the negative output copper busbar through the first avoidance opening. The positive output copper busbar and the negative output copper busbar are stacked along the first direction except for the parts electrically connected to the positive output copper busbar and the positive output copper busbar, thereby reducing the parasitic capacitance generated by the electrical connection between the capacitor module and the power module.
[0017] In a third aspect, the present application provides a powertrain. The powertrain includes a motor and a motor controller, and the motor controller is electrically connected to the motor. The motor controller is used to convert direct current provided by a power source into alternating current, and output the alternating current to the motor. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 A schematic diagram of a vehicle provided in an embodiment of the present application;
[0019] Figure 2 A schematic diagram of a vehicle and a powertrain provided in an embodiment of the present application;
[0020] Figure 3 A schematic diagram of the structure of a motor controller provided in an embodiment of the present application;
[0021] Figure 4 A structural schematic diagram of a capacitor module provided in an embodiment of the present application;
[0022] Figure 5 An exploded diagram of a capacitor module provided in an embodiment of the present application;
[0023] Figure 6 Another exploded view of the capacitor module provided in the embodiment of the present application;
[0024] Figure 7 A schematic diagram of the structure of a positive output copper busbar in a capacitor module provided in an embodiment of the present application;
[0025] Figure 8 A schematic diagram of the structure of a negative electrode output copper busbar in a capacitor module provided in an embodiment of the present application;
[0026] Fig. 9 A schematic diagram of the structure of an insulating plate in a capacitor module provided in an embodiment of the present application.
[0027] Reference numerals:
[0028] 1-vehicle; 10-vehicle body; 11-wheel; 12-vehicle load; 13-external power supply; 2-power assembly; 20-power module; 21-power battery; 22-motor; 3-motor controller; 30-capacitor module; 300-capacitor housing; 3000-accommodation cavity; 301-capacitor core package; 302-positive output copper bar; 3020-protrusion; 3021-first avoidance port; 3022- Positive electrode connection hole; 3023-first through hole; 303-negative electrode output copper busbar; 3030-second avoidance port; 3031-connecting part; 3032-negative electrode connection hole; 3033-second through hole; 304-cover; 305-insulating plate; 305a-main board; 3050-first positioning hole; 3051-second positioning hole; 3052-first enclosure; 3053-second enclosure; 31-power module. DETAILED DESCRIPTION
[0029] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings.
[0030] The motor controller is the core component for controlling the electric assembly in electric vehicles, and the performance of the motor controller directly affects the performance of the vehicle. In the prior art, the power module in the motor controller is used to convert the DC power output by the capacitor module into AC power. When the power module is switched on and off, there is a large parasitic inductance between the output copper bar of the capacitor module and the input copper bar of the power module. The large parasitic inductance easily causes damage to the power module and the capacitor module. Therefore, how to reduce the parasitic capacitance between the power capacitor module and the power module has become an urgent problem to be solved.
[0031] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings.
[0032] The terms used in the following embodiments are only for the purpose of describing specific embodiments and are not intended to be limiting of the present application. As used in the specification and appended claims of the present application, the singular expressions "a", "an", "said", "above", "the" and "this" are intended to also include expressions such as "one or more", unless there is a clear contrary indication in the context.
[0033] References to "one embodiment" or "some embodiments" etc. described in this specification mean that a particular feature, structure or characteristic described in conjunction with the embodiment is included in one or more embodiments of the present application. Thus, the phrases "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear at different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways.
[0034] Figure 1 A schematic diagram of the vehicle provided for this application. Figure 1 , the vehicle 1 includes a vehicle body 10, wheels 11, a power battery 21 and a powertrain 2. The powertrain 2 is mounted on the vehicle body 10, and the power battery 21 supplies power to the powertrain 2. The powertrain 2 is used to drive the wheels 11 of the vehicle 1. In one embodiment, the vehicle 1 includes wheels 11 and a powertrain 2. The powertrain 2 is used to drive the wheels 11 of the vehicle 1.
[0035] In the present application, vehicle 1 includes an electric vehicle (EV), a battery electric vehicle (BEV), a hybrid electric vehicle (HEV), a range extended electric vehicle (REEV), a plug-in hybrid electric vehicle (PHEV) or a new energy vehicle (New Energy Vehicle).
[0036] Figure 2 Schematic diagram of a vehicle and a powertrain provided in an embodiment of the present application. Figure 2 As shown, the vehicle 1 includes a vehicle body 10 , wheels 11 , a power battery 21 , a power module 20 , a vehicle load 12 and a power assembly 2 .
[0037] In one embodiment, the powertrain 2 includes a motor controller 3 and a motor 22. Figure 2 The power battery 21 supplies power to the motor 22 through the motor controller 3. The motor controller 3 is used to convert the direct current provided by the power battery 21 into alternating current. The motor 22 receives the alternating current and converts it into kinetic energy to drive the wheel 11.
[0038] In one embodiment, the power module 20 is used to receive power from the external power source 13 and charge the power battery 21. In one embodiment, the power module 20 is used to supply power to the vehicle-mounted load 12.
[0039] In the present application, the external power source 13 may be an AC power grid, an AC charging pile or a DC charging pile. The power module 20 may be a power distribution unit or an onboard charger. The onboard load 12 includes at least one of a compressor, a battery heating module, a seat heating module and a DC low-voltage power supply.
[0040] Figure 3 A schematic diagram of a motor controller provided in an embodiment of the present application, referring to Figure 3The motor controller includes a housing, a capacitor module 30 and at least one group of power modules 31. The housing is used to accommodate the capacitor module 30 and the at least one group of power modules 31. The at least one group of power modules 31 and the capacitor module 30 are arranged at intervals along the third direction Z. The capacitor module 30 is electrically connected to the at least one group of power modules 31. The at least one group of power modules 31 is used to convert the direct current output by the capacitor module 30 into alternating current. In one embodiment, the motor controller includes two groups of power modules 31. The two groups of power modules 31 are arranged at intervals along the third direction Z. Each group of power modules 31 includes a plurality of power modules 31 arranged at intervals along the second direction Y. Each power module 31 is electrically connected to the capacitor module 30.
[0041] Figure 4 A structural schematic diagram of a capacitor module provided in an embodiment of the present application; Figure 5 An exploded diagram of a capacitor module provided in an embodiment of the present application; Figure 6 Another exploded view of the capacitor module provided in the embodiment of the present application. Figure 4 , Figure 5 and Figure 6 In one embodiment, the capacitor module 30 includes a capacitor housing 300, a capacitor core package 301, a positive output copper bar 302, and a negative output copper bar 303. The capacitor housing 300 includes a receiving chamber 3000 with an opening at one end, the opening of the receiving chamber 3000 is oriented along the third direction Z, and the receiving chamber 3000 is used to receive the capacitor core package 301; one end of the positive output copper bar 302 and one end of the negative output copper bar 303 are arranged on both sides of the capacitor core package 301 along the first direction X. It can be understood that one end of the positive output copper bar 302 is located between the capacitor core package 301 and one side wall of the capacitor housing 300, and one end of the negative output copper bar 303 is located between the capacitor core package 301 and another side wall of the capacitor housing 300, wherein one side wall and another side wall of the capacitor housing 300 are two side walls arranged along the first direction. One end of the positive output copper bar 302 and one end of the negative output copper bar 303 are electrically connected to the capacitor core package 301, respectively, for transmitting the direct current output by the capacitor core package 301. The other end of the positive output copper bar 302 extends to the outside of the accommodating cavity 3000 along the third direction Z, and the other end of the negative output copper bar 303 extends to the outside of the accommodating cavity 3000 along the third direction Z. The other end of the positive output copper bar 302 and the other end of the negative output copper bar 303 are stacked and arranged along the first direction X. In the projection of the first direction X, the other end of the positive output copper bar 302 at least partially covers the other end of the negative output copper bar 303.
[0042] In one embodiment, the capacitor module 30 includes a cover 304, which is located on the opening side of the accommodating cavity 3000. The cover 304 is used to control the opening and closing of the accommodating cavity 3000. The other end of the positive output copper bus 302 and the other end of the negative output copper bus 303 extend through the cover 304 to the outside of the capacitor housing 300.
[0043] Figure 7 A schematic diagram of the structure of the positive output copper bar in the capacitor module provided in the embodiment of the present application. Figure 6 and Figure 7 In one embodiment, the other end of the positive output copper busbar 302 includes a plurality of first avoidance openings 3021, the plurality of first avoidance openings 3021 are arranged at intervals along the second direction Y, and the first avoidance openings 3021 penetrate the other end of the positive output copper busbar 302 along the first direction X. Figure 8 A schematic diagram of the structure of the negative output copper bar in the capacitor module provided in the embodiment of the present application. Figure 6 , Figure 7 and Figure 8 , the other end of the negative output copper bar 303 includes a plurality of second avoidance openings 3030, and the plurality of second avoidance openings 3030 penetrate the negative output copper bar 303 along the first direction X. In the projection of the first direction, the plurality of first avoidance openings 3021 and the second avoidance openings 3030 are arranged in a staggered manner. In this manner, when the positive output copper bar 302 and the negative output copper bar 303 transmit the direct current of the capacitor core package 301, the difference between the other end of the positive output copper bar 302 and the other end of the negative output copper bar 303 except the first avoidance opening 3021 and the second avoidance opening 3030 is stacked, and the stacking area between the positive output copper bar 302 and the negative output copper bar 303 is increased, which can reduce the parasitic inductance between the positive output copper bar 302 and the negative output copper bar 303. Specifically, when the capacitor module is electrically connected to the power module, the positive input copper bar included in the power module is electrically connected to the positive output copper bar 302 through the second avoidance opening 3030, and the negative input copper bar included in the power module is electrically connected to the other end of the negative output copper bar 303 through the first avoidance opening 3021. Since the other end of the positive output copper bar 302 and the other end of the negative output copper bar 303 are stacked as a whole, and the other end of the positive output copper bar 302 and the other end of the negative output copper bar 303 are in a continuous stacking relationship, the parasitic inductance generated between the power module and the positive output copper bar 302 and the negative output copper bar 303 can also be reduced.
[0044] In one embodiment, the other end of the positive output copper bar 302 includes a plurality of protrusions 3020, and the plurality of protrusions 3020 are arranged at intervals along the second direction Y, a first avoidance opening 3021 is arranged between two adjacent protrusions 3020, or a protrusion 3020 is arranged between two adjacent first avoidance openings 3021, and a protrusion 3020 is arranged in a second avoidance opening 3030, which can be understood as the other end of the positive output copper bar 302 is embedded in the other end of the negative output copper bar 303. The positive input copper bar included in the power module is electrically connected to the protrusion 3020. In addition, the setting of the protrusion 3020 also facilitates the alignment of the other end of the positive output copper bar 302 and the other end of the negative output copper bar 303, thereby improving the convenience of installation.
[0045] In one embodiment, the other end of the negative output copper bar 303 includes a plurality of connection parts 3031, and the plurality of connection parts 3031 are arranged at intervals along the second direction Y, and a second avoidance opening 3030 is formed between two adjacent connection parts 3031. In the projection of the first direction X, the connection part 3031 covers the first avoidance opening 3021, and the connection part 3031 partially overlaps with the other end of the positive output copper bar 302. The connection part 3031 includes at least one negative connection hole 3032, and the negative connection hole 3032 penetrates the connection part 3031 along the first direction X. The negative connection hole 3032 is used to fix the negative input copper bar included in the power module to the negative output copper bar 303 when the power module is electrically connected to the capacitor module, so that the negative input copper bar is electrically connected to the negative input copper bar 303. Similarly, the protruding portion 3020 includes at least one positive electrode connection hole 3022, which penetrates the protruding portion 3020 along the first direction X. The positive electrode connection hole 3022 is used to fix the positive electrode input copper bar included in the power module to the positive electrode output copper bar 302 when the power module is electrically connected to the capacitor module, and to electrically connect the positive electrode input copper bar to the positive electrode output copper bar 302. Among them, except for the position corresponding to the first avoidance opening 3021, the rest of the connection parts 3031 overlap with the other end of the positive electrode output copper bar 302, thereby reducing the parasitic inductance generated between the power module and the positive electrode output copper bar 302 and the negative electrode output copper bar 303.
[0046] In the above embodiment, the positive output copper bar 302 includes a plurality of first through holes 3023, which are arranged at intervals along the second direction Y. The arrangement of the first through holes 3023 can reduce the resistance encountered by the other end of the positive output copper bar 302 relative to one end of the positive output copper bar 302 when it is bent. The negative output copper bar 303 includes a plurality of second through holes 3033, which are arranged at intervals along the second direction Y. The second through holes 3033 can reduce the resistance encountered by the negative output copper bar 303 when it is bent.
[0047] Fig. 9 A schematic diagram of the structure of the insulating plate in the capacitor module provided in the embodiment of the present application. Figure 6 , Figure 7 , Figure 8 and Fig. 9 In one embodiment, the capacitor module includes an insulating plate 305, and the insulating plate is located between the other end of the positive output copper bar 302 and the negative output copper bar 303 along the first direction X. The insulating plate 305 can improve the safety between the positive output copper bar 302 and the negative output copper bar 303, and prevent the positive output copper bar 302 and the negative output copper bar 303 from generating cross-current. Among them, the length of the insulating plate 305 along the second direction Y is greater than the length of the other end of the negative output copper bar 303, the length of the insulating plate 305 along the second direction Y is also greater than the length of the other end of the positive output copper bar 302, the length of the insulating plate 305 along the third direction Z is greater than the length of the other end of the negative output copper bar 303, and the length of the insulating plate 305 along the third direction Z is greater than the length of the other end of the positive output copper bar 302. To ensure that the insulating plate 305 can isolate the electrical connection between the other end of the positive output copper bar 302 and the other end of the negative output copper bar 303, prevent cross-current.
[0048] In one embodiment, the insulating plate 305 includes a main body 305a, the main body 305a includes a plurality of first positioning holes 3050 and a plurality of second positioning holes 3051, the plurality of first positioning holes 3050 are arranged at intervals along the second direction Y, the plurality of second positioning holes 3051 are arranged at intervals along the second direction Y, and the plurality of first positioning holes 3050 and the plurality of second positioning holes 3051 are staggered along the second direction Y. Along the first direction X, the first positioning hole 3050 corresponds to the second avoidance opening 3030 of the negative output copper busbar 303, and the protrusion 3020 included in the positive output copper busbar 302 passes through the first positioning hole 3050 and enters the second avoidance opening 3030. Along the first direction X, the second positioning hole 3051 is located between the connecting portion 3031 and the first avoidance opening 3021. When the main body 305a is disposed between the other end of the positive output copper bar 302 and the other end of the negative output copper bar 303, the protrusion 3020 included in the positive output copper bar 302 can enter the second avoidance opening 3030 through the first positioning hole 3050, so as to ensure that when the capacitor module is electrically connected to the power module, the connector can pass through the protrusion 3020 to be electrically connected to the positive input copper bar included in the power module. Correspondingly, the connection portion 3031 of the negative output copper bar 303 corresponds to the second positioning hole 3051 and the first avoidance opening 3021, and when the connector passes through the connection portion 3031 to be electrically connected to the negative input copper bar included in the power module, the negative input copper bar is only electrically connected to the negative output copper bar 303.
[0049] In one embodiment, the insulating plate 305 further includes a plurality of first enclosure plates 3052, which are arranged at intervals along the second direction Y, one end of each first enclosure plate 3052 is connected to the inner wall of the first positioning hole 3050, and the other end of the first enclosure plate 3052 extends toward one end of the second avoidance opening 3030. The first enclosure plate 3052 is made of insulating material, and when the other end of the positive output copper bar 302 and the other end of the negative output copper bar 303 are stacked, the protrusion 3020 of the positive output copper bar 302 is inserted into the first enclosure plate 3052.
[0050] In one embodiment, the insulating plate 305 further includes a plurality of second enclosure plates 3053, which are arranged at intervals along the second direction Y, one end of each second enclosure plate 3053 is connected to the inner wall of the second positioning hole 3051, and the other end of each second enclosure plate 3053 extends toward one end of the first avoidance opening 3021. The second enclosure plates 3053 are made of insulating material, and when the other end of the positive output copper bar 302 and the other end of the negative output copper bar 303 are stacked and connected to the negative input copper bar of the power module, the negative input copper bar can be located in the second enclosure plates 3053 to prevent interference between the negative input copper bar and the positive output copper bar.
[0051] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.
Claims
1. A capacitor module, characterized in that: include: Capacitor core package, positive output copper busbar and negative output copper busbar; One end of the positive output copper bar and one end of the negative output copper bar are arranged on both sides of the capacitor core package along the first direction, the other end of the positive output copper bar and the other end of the negative output copper bar extend to the outside of the capacitor core package, and the other end of the positive output copper bar and the other end of the negative output copper bar are stacked along the first direction, wherein: The other end of the positive output copper busbar includes a plurality of first avoidance openings, which are arranged at intervals along the second direction. The other end of the negative output copper busbar includes a plurality of second avoidance openings, which are arranged at intervals along the second direction. In the projection of the first direction, the plurality of first avoidance openings and the plurality of second avoidance openings are arranged alternately.
2. The capacitor module according to claim 1, wherein: The other end of the positive output copper busbar includes a plurality of protrusions, which are arranged at intervals along the second direction, and a first avoidance opening is arranged between two adjacent protrusions, and the protrusion is used to pass through the second avoidance opening.
3. The capacitor module according to claim 2, characterized in that: The other end of the negative output copper busbar includes a plurality of connection parts, and the plurality of connection parts are arranged at intervals along the second direction, and a second avoidance opening is formed between two adjacent connection parts. In the projection in the first direction, the connection part covers the first avoidance opening, and the connection part is stacked with the other end of the positive output copper busbar.
4. The capacitor module according to claim 3, characterized in that: The capacitor module includes an insulating plate, and the insulating plate is located between the other end of the positive output copper bar and the negative output copper bar along the first direction.
5. The capacitor module according to claim 4, characterized in that: The length of the insulating plate along the second direction is greater than the length of the other end of the negative output copper bar and the length of the other end of the positive output copper bar along the second direction, and the length of the insulating plate along the third direction is greater than the length of the other end of the negative output copper bar and the length of the other end of the positive output copper bar along the third direction.
6. The capacitor module according to claim 4, characterized in that: The insulating board comprises a main board body, the main board body comprises a plurality of first positioning holes and a plurality of second positioning holes, the plurality of first positioning holes are arranged at intervals along the second direction, the plurality of second positioning holes are arranged at intervals along the second direction, and the plurality of first positioning holes and the plurality of second positioning holes are arranged alternately along the second direction; The protruding portion passes through the first positioning hole along the first direction, and the second positioning hole is located between the connecting portion and the first avoidance opening along the first direction.
7. The capacitor module according to claim 6, characterized in that: The insulating plate includes a plurality of first enclosures, which are arranged at intervals along the second direction, one end of the first enclosure is connected to the inner wall of the first positioning hole, and the other end of the first enclosure extends toward one end of the second avoidance opening.
8. The capacitor module according to claim 6 or 7, characterized in that: The insulating plate includes a plurality of second enclosures, which are arranged at intervals along the second direction, one end of each of the second enclosures is connected to the inner wall of the second positioning hole, and the other end of the second enclosure extends toward one end of the first avoidance opening.
9. The capacitor module according to any one of claims 1 to 7, characterized in that: The capacitor module includes a capacitor shell, the capacitor shell includes a accommodating cavity, the accommodating cavity is used to accommodate the capacitor core package, one end of the positive output copper bar and one end of the negative output copper bar are both located between the capacitor core package and the capacitor shell, and the other end of the positive output copper bar and the other end of the negative output copper bar extend to the outside of the capacitor shell.
10. A motor controller, characterized in that: The motor controller comprises at least one group of power modules and a capacitor module as described in any one of claims 1 to 9, the capacitor core package and the at least one group of power modules are arranged at intervals along a third direction, and the positive output copper busbar and the negative output copper busbar are electrically connected to the at least one group of power modules.
11. The motor controller according to claim 10, characterized in that: A group of power modules includes a plurality of power modules arranged at intervals along a second direction, each of the power modules includes a positive input copper bar and a negative input copper bar, the positive input copper bar and the negative input copper bar are arranged at intervals along the second direction, the positive input copper bar is electrically connected to the other end of the positive output copper bar, and the negative input copper bar is electrically connected to the other end of the negative output copper bar.
12. A powertrain, characterized in that: The powertrain includes a motor and a motor controller as claimed in claim 10 or 11, and the motor controller is electrically connected to the motor.