CN210694652U - Motor controller, power driving system and electric automobile - Google Patents
Motor controller, power driving system and electric automobile Download PDFInfo
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- CN210694652U CN210694652U CN201921848440.7U CN201921848440U CN210694652U CN 210694652 U CN210694652 U CN 210694652U CN 201921848440 U CN201921848440 U CN 201921848440U CN 210694652 U CN210694652 U CN 210694652U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
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Abstract
An embodiment of the utility model provides a motor controller, power drive system and electric automobile, wherein motor controller includes: the device comprises a metal shell, a direct current bus capacitor module and a power module; the power module is arranged in a first area on the metal shell, a partition plate is arranged on a second area of the metal shell, the partition plate is enclosed into an accommodating space, the direct-current bus capacitor module is arranged in the accommodating space, and the partition plate forms an encapsulation shell of the direct-current bus capacitor module; the direct current bus capacitor module is electrically connected with the power module. The utility model discloses an in the embodiment, direct current bus capacitance module is fixed and is restricted through setting up in metal casing's first regional division board, has reduced the casing that additionally sets up direct current bus capacitance module and to the demand of mould, simultaneously, because metal casing and cut apart the board and be the metal material, has improved direct current bus capacitance module's radiating efficiency, and then is favorable to guaranteeing machine controller's reliability and driving safety.
Description
Technical Field
The utility model relates to an electric automobile technical field, in particular to machine controller, power drive system and electric automobile.
Background
In a new energy automobile, a motor controller is a device for converting direct current provided by a battery into alternating current required by the work of a motor, wherein a direct current bus capacitor and a power module are core components of the motor controller. The direct current bus capacitor is mainly used for protecting a battery and a power semiconductor device, suppressing electromagnetic interference in the inverter and simultaneously suppressing voltage rise when the system works abnormally.
The common dc bus capacitor is a polypropylene film capacitor, but the polypropylene film capacitor has the disadvantage of low use temperature due to the temperature characteristic of the polypropylene film. In the motor controller, positive and negative copper bars inside the direct current bus capacitor are respectively welded with positive and negative electrodes of a core wound by a polypropylene film, the positive and negative copper bars can generate heat when the motor controller works, and the heat productivity of the copper bars can not exceed the maximum service temperature of the polypropylene film. However, the heat dissipation effect of the dc bus capacitor is not good, so that the performance of the dc bus capacitor is restricted, and the consequences of film overheating breakdown, capacitor bulge, burnout and the like are often caused, which seriously affects the reliability of the motor controller and further affects the driving safety.
At present, the heat dissipation modes of the direct current bus capacitor mainly include the following modes:
1) the direct current bus capacitor does not perform heat dissipation treatment, and is the current mainstream scheme.
2) The direct current bus capacitor is contacted with the shell through the heat dissipation rubber mat. Because the plastic shell of the direct current bus capacitor has larger dimensional tolerance, a heat dissipation/vibration reduction pad with a compression amount is generally attached to the metal shell of the motor controller at the bottom to realize indirect heat dissipation of the direct current bus capacitor, but the heat dissipation effect is not ideal.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a technical purpose that will reach provides a motor controller, power driving system and electric automobile for solve the direct current bus-bar electric capacity radiating effect among the current motor controller not good, influence the problem of motor controller reliability.
In order to solve the above technical problem, an embodiment of the present invention provides a motor controller, including: the device comprises a metal shell, a direct current bus capacitor module and a power module;
the power module is arranged in a first area on the metal shell, a partition plate is arranged on a second area of the metal shell, the partition plate is enclosed into an accommodating space, the direct-current bus capacitor module is arranged in the accommodating space, and the partition plate forms an encapsulation shell of the direct-current bus capacitor module;
the direct current bus capacitor module is electrically connected with the power module.
Preferably, in the motor controller described above, the accommodating space is filled with an insulating and heat-conducting potting adhesive, and the potting adhesive surrounds the entire dc bus capacitor module.
Specifically, as for the motor controller, gaps are formed between the bottom surface of the dc bus capacitor module and the bottom surface of the accommodating space, and between the side surface of the dc bus capacitor module and the partition plate, and the potting adhesive is filled into the gaps.
Further, as for the motor controller, the pouring sealant also covers the top surface of the dc bus capacitor module.
Preferably, as for the motor controller, the dc bus capacitor module includes a plurality of capacitor cores arranged at intervals, wherein the potting adhesive fills the space between adjacent capacitor cores.
Specifically, as described above for the motor controller, the capacitor core includes the polypropylene film core.
Further, in the motor controller described above, the dc bus capacitor module further includes a positive copper bar and a negative copper bar;
the positive copper bar is connected with the positive electrodes of the plurality of capacitor cores through welding;
the negative copper bar is connected with the negative electrodes of the plurality of capacitor cores through welding.
Preferably, in the motor controller as described above, a first end of the positive copper bar along a preset direction is provided with at least one first positive terminal, a second end opposite to the first end is provided with at least one second positive terminal, and the preset direction is along a direction from the power module to the dc bus capacitor module;
at least one first negative terminal is arranged at the third end of the negative copper bar along the preset direction, and at least one second negative terminal is arranged at the fourth end opposite to the third end;
the first positive terminal, the second positive terminal, the first negative terminal and the second negative terminal cross the partition plate and are positioned outside the accommodating space;
the direct current bus capacitor module is electrically connected with the power module through the first positive terminal and the first negative terminal.
Another preferred embodiment of the present invention further provides a power driving system, including: the driving motor, the power battery and the motor controller are used for driving the motor;
the power battery is connected with a direct current bus capacitor module of the motor controller;
the driving motor is connected with a power module of the motor controller.
The utility model discloses a still another preferred embodiment still provides an electric automobile, include: a power drive system as described above.
Compared with the prior art, the embodiment of the utility model provides a pair of machine controller, power drive system and electric automobile has following beneficial effect at least:
the utility model discloses an in the embodiment, at the first region of motor controller's metal casing, keep apart a accommodation space through the division board, set up direct current bus capacitor module in the accommodation space, the division board exists as the packaging shell of direct current bus capacitor module, can directly fix and restrict direct current bus capacitor module, has reduced the casing that additionally sets up direct current bus capacitor module and to the demand of mould to and to fixed knot structure for example when fixed mounting: the demand of bolt, and avoid directly exposing the potential safety hazard that brings direct current bus capacitor module, simultaneously, because metal casing and cut-off board are the metal material, compare in the current mode that does not carry out the heat dissipation processing or carry out the heat dissipation through heat dissipation/shock pad, improved direct current bus capacitor module's radiating efficiency, avoided causing consequences such as overheated breakdown of film, electric capacity swell, burnout, and then be favorable to guaranteeing motor controller's reliability and driving safety.
Drawings
Fig. 1 is one of the schematic structural diagrams of the motor controller of the present invention;
fig. 2 is a second schematic structural diagram of the motor controller according to the present invention;
fig. 3 is a schematic structural diagram of a metal casing of the motor controller of the present invention.
[ description of reference ]
1. A metal housing; 101. a first region; 102. a second region; 103. a partition plate;
2. a DC bus capacitor module; 201. a capacitor core; 202. a positive copper bar;
2021. a first positive terminal; 2022. a second positive terminal; 203. a negative copper bar;
2031. a first negative terminal; 2032. a second negative terminal; 3. a power module; 4. pouring a sealant;
Detailed Description
In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following detailed description will be given with reference to the accompanying drawings and specific embodiments. In the following description, specific details are provided, such as specific configurations and components, merely to facilitate a thorough understanding of embodiments of the invention. Thus, it will be apparent to those skilled in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the invention. In addition, descriptions of well-known functions and constructions are omitted for clarity and conciseness.
It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
In various embodiments of the present invention, it should be understood that the sequence numbers of the following processes do not mean the execution sequence, and the execution sequence of the processes should be determined by the functions and the internal logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.
It should be understood that the term "and/or" herein is merely one type of association relationship that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
In the embodiments provided herein, it should be understood that "B corresponding to a" means that B is associated with a from which B can be determined. It should also be understood that determining B from a does not mean determining B from a alone, but may be determined from a and/or other information.
Referring to fig. 1 to 3, a preferred embodiment of the present invention provides a motor controller, including: the device comprises a metal shell 1, a direct current bus capacitor module 2 and a power module 3;
the power module 3 is arranged in a first area 101 on the metal shell 1, a partition plate 103 is arranged on a second area 102 of the metal shell 1, the partition plate 103 is enclosed to form an accommodating space, the direct-current bus capacitor module 2 is arranged in the accommodating space, and the partition plate 103 forms a packaging shell of the direct-current bus capacitor module 2;
the direct current bus capacitor module 2 is electrically connected with the power module 3.
The utility model discloses an in the embodiment, at the first region 101 of motor controller's metal casing 1, keep apart a accommodation space through division board 103, set up direct current bus capacitor module 2 in the accommodation space, division board 103 exists as direct current bus capacitor module 2's packaging shell, can directly fix and restrict direct current bus capacitor module 2, the casing that has reduced extra setting direct current bus capacitor module 2 demand to the mould to and to fixed knot structure for example when fixed mounting: the demand of bolt, and avoid directly exposing the potential safety hazard that brings direct current bus capacitor module 2, simultaneously, because metal casing 1 and cut-off board are the metal material, compare in the current mode that does not carry out the thermal treatment or carry out the heat dissipation through heat dissipation/shock pad, improved direct current bus capacitor module 2's radiating efficiency, avoided causing consequences such as overheated breakdown of film, electric capacity swell, burnout, and then be favorable to guaranteeing motor controller's reliability and driving safety. The direct current bus capacitor module 2 is electrically connected with the power module 3 arranged on the first region 101 of the metal shell 1 for ensuring the realization of the normal control function of the motor controller.
Referring to fig. 2, preferably, in the motor controller as described above, the accommodating space is filled with the insulating and heat-conducting potting adhesive 4, and the potting adhesive 4 surrounds the entire dc bus capacitor module 2.
The utility model discloses an in the embodiment, it is filled with insulating heat conduction's casting glue 4 to fill in the accommodation space, and casting glue 4 surrounds whole direct current generating line electric capacity module 2, make the electric leakage that has avoided direct and metal casing 1 direct contact of direct current generating line electric capacity module 2 to cause or arouse the emergence of the circumstances such as direct current generating line electric capacity module 2 short circuit, casting glue 4 has the heat conduction function simultaneously, be convenient for with the even conduction of heat to machine controller's metal casing 1 of direct current generating line electric capacity module 2 production, and then through enlarging heat radiating area, and improve the radiating efficiency.
Referring to fig. 1 and fig. 2, specifically, as for the motor controller described above, gaps are provided between the bottom surface of the dc bus capacitor module 2 and the bottom surface of the accommodating space, and between the side surface of the dc bus capacitor module 2 and the partition plate 103, and the potting adhesive 4 is filled into the gaps.
The utility model discloses an in the embodiment, between the bottom surface of direct current bus-bar electric capacity module 2 and the bottom surface of accommodation space, and all have the clearance between direct current bus-bar electric capacity's side and the division board 103, pouring sealant 4 fills to the clearance in, be provided with the clearance between direct current bus-bar electric capacity module 2 and the metal casing 1 promptly, and fill to the clearance in through pouring sealant 4, it is insulating to guarantee direct current bus-bar electric capacity module 2, on the basis of heat conduction, provide absorbing function for direct current bus-bar electric capacity module 2 and metal casing 1, avoid when the vehicle jolts, produce the collision and cause the damage to direct current bus-bar electric capacity module 2.
Referring to fig. 1 and 2, further to the motor controller described above, the potting adhesive 4 also covers the top surface of the dc bus capacitor module 2.
The utility model discloses an in the embodiment, pouring sealant 4 still covers direct current bus capacitor module 2's top surface, forms the inoxidizing coating at direct current bus capacitor module 2's top surface, is favorable to avoiding other components and parts in the machine controller and direct current bus capacitor module 2's direct contact to produce the short circuit, or other components and parts collide with direct current bus capacitor module 2's production, is favorable to guaranteeing direct current bus capacitor module 2's safety. Specifically, a preset distance is formed between the upper top surface of the pouring sealant 4 and the upper top surface of the partition plate 103, so that the arrangement of the whole motor controller is prevented from being influenced by too much pouring sealant 4.
Referring to fig. 1 and 2, preferably, as mentioned above, the dc bus capacitor module 2 includes a plurality of capacitor cores 201 arranged at intervals, wherein the potting adhesive 4 fills the space between adjacent capacitor cores 201.
Specifically, as in the motor controller described above, the capacitor core 201 includes a polypropylene film core.
The utility model discloses an in the embodiment, direct current bus capacitor module 2 includes the electric capacity core 201 that a plurality of intervals set up, wherein the quantity of electric capacity core 201 is confirmed according to required direct current bus capacitor module 2's capacitance value, the preferred polypropylene film core of specific electric capacity core 201, utilize low-loss that polypropylene film capacitor has, current-resisting capability is high, the inductance is low, the reliability is high, longe-lived and advantage such as price/performance ratio height, be favorable to improving direct current bus capacitor module 2's reliability and reduce cost. Specifically, the potting adhesive 4 is filled into the space between the adjacent capacitor cores 201, which is beneficial to maintaining the relative positions of the capacitor cores 201, and avoiding the damage to the capacitor cores 201 caused by mutual collision between the adjacent capacitor cores 201, thereby being beneficial to ensuring the stability and reliability of the whole direct current bus capacitor module 2 and the motor controller.
Referring to fig. 1 and fig. 2, further, in the motor controller as described above, the dc bus capacitor module 2 further includes a positive copper bar 202 and a negative copper bar 203;
the positive copper bar 202 is connected with the positive electrodes of the plurality of capacitor cores 201 through welding;
the negative copper bar 203 is connected with the negative electrodes of the plurality of capacitor cores 201 through welding.
The utility model discloses an in the embodiment, be connected through anodal copper bar 202 and the positive pole of a plurality of electric capacity cores 201 respectively to be connected through negative pole copper bar 203 and the negative pole of a plurality of electric capacity cores 201, make a plurality of electric capacity cores 201 parallelly connected, guarantee direct current generating line electric capacity module 2's capacitance value, be convenient for connect direct current generating line electric capacity module 2 in machine controller's circuit simultaneously. It should be noted that, in the embodiment of the present invention, the positive copper bar 202 and the negative copper bar 203 are preferably made of copper or copper alloy, but not limited to be made of copper or copper alloy, and made of other metals, metal alloys or other materials with conductive and heat-conductive functions, which also belongs to the protection scope of the present invention.
Referring to fig. 1 and fig. 2, preferably, in the motor controller as described above, a first end of the positive copper bar 202 along a preset direction is provided with at least one first positive terminal 2021, and a second end opposite to the first end is provided with at least one second positive terminal 2022, where the preset direction is along a direction from the power module 3 to the dc bus capacitor module 2;
at least one first negative terminal 2031 is arranged at a third end of the negative copper bar 203 along the preset direction, and at least one second negative terminal 2032 is arranged at a fourth end opposite to the third end;
the first positive terminal 2021, the second positive terminal 2022, the first negative terminal 2031, and the second negative terminal 2032 all cross over the partition plate 103 and are located outside the accommodating space;
the dc bus capacitor module 2 is electrically connected to the power module 3 via the first positive electrode terminal 2021 and the first negative electrode terminal 2031.
In the embodiment of the present invention, the two ends of the positive copper bar 202 along the preset direction are respectively provided with the first positive terminal 2021 and the second positive terminal 2022, the two ends of the negative copper bar 203 along the preset direction are respectively provided with the first negative terminal 2031 and the second negative terminal 2032, wherein, the first positive terminal 2021, the second positive terminal 2022, the first negative terminal 2031 and the second negative terminal 2032 all stride over the partition plate 103, and are located outside the accommodating space, i.e. the first positive terminal 2021, the second positive terminal 2022, the first negative terminal 2031 and the second negative terminal 2032 all stretch out from the accommodating space, it is convenient to connect the dc bus capacitor module 2 in the circuit of the electric machine controller, and the number of the first positive terminal 2021 and the first negative terminal 2031 is at least one, the technical personnel in the art can set up according to the interface number of the power module 2033, so that the dc bus capacitor module 2 passes through the first positive terminal 2021 and the first negative terminal 2021 and the power module 2031, and the power module 2032 correspond to be set up When the blocks 3 are connected, the blocks can be connected in a one-to-one correspondence manner, so that the situations of circuit crossing and the like are avoided, and the simplicity of circuit arrangement is ensured.
Another preferred embodiment of the present invention further provides a power driving system, including: the driving motor, the power battery and the motor controller are used for driving the motor;
the power battery is connected with a direct current bus capacitor module of the motor controller;
the driving motor is connected with a power module of the motor controller.
The utility model discloses an in the embodiment, in power drive system, direct current bus-bar capacitance module is connected with power battery and power module respectively, protect power battery and power module, and restrain the electromagnetic interference on the circuit, wherein direct current bus-bar capacitance module directly sets up in the accommodation space of the second region formation of metal casing, and fill through the casting glue, have good heat dispersion through guaranteeing direct current bus-bar capacitance module, guarantee whole machine controller's reliability, and then be connected with driving motor through power module, guarantee power drive system's reliability. Meanwhile, the direct current bus capacitor module is directly arranged in the accommodating space of the metal shell, so that the shell with the direct current bus capacitor module is prevented from being independently arranged, and the cost is reduced.
The utility model discloses a still another preferred embodiment still provides an electric automobile, include: a power drive system as described above.
The utility model discloses an in the embodiment, electric automobile includes as above power drive system, wherein, has good heat dispersion through guaranteeing that direct current bus-bar capacitance module, guarantees whole machine controller's reliability, and then guarantees whole power drive system and electric automobile's reliability, and then improves electric automobile's performance, simultaneously, because direct current bus-bar capacitance module directly sets up in metal casing's accommodation space, avoided the casing that sets up direct current bus-bar capacitance module alone, and then be favorable to reducing the cost.
Furthermore, the present invention may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed.
It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion.
The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A motor controller, comprising: the device comprises a metal shell (1), a direct current bus capacitor module (2) and a power module (3);
the power module (3) is arranged in a first area (101) on the metal shell (1), a partition plate (103) is arranged in a second area (102) of the metal shell (1), the partition plate (103) is enclosed to form an accommodating space, the direct-current bus capacitor module (2) is arranged in the accommodating space, and the partition plate (103) forms a packaging shell of the direct-current bus capacitor module (2);
the direct current bus capacitor module (2) is electrically connected with the power module (3).
2. The motor controller according to claim 1, wherein the accommodating space is filled with insulating and heat-conducting pouring sealant (4), and the pouring sealant (4) surrounds the whole direct current bus capacitor module (2).
3. The motor controller according to claim 2, wherein gaps are formed between the bottom surface of the direct current bus capacitor module (2) and the bottom surface of the accommodating space, and between the side surface of the direct current bus capacitor module (2) and the partition plate (103), and the pouring sealant (4) is filled into the gaps.
4. A motor controller according to claim 2 or 3, characterised in that the potting compound (4) also covers the top surface of the dc bus capacitor module (2).
5. The motor controller according to claim 2, characterized in that the dc bus capacitor module (2) comprises a plurality of capacitor cores (201) arranged at intervals, wherein the potting adhesive (4) is filled into the space between adjacent capacitor cores (201).
6. A motor controller according to claim 5, characterised in that the capacitor core (201) comprises a polypropylene film core.
7. The machine controller according to claim 5, characterized in that the direct current bus capacitor module (2) further comprises a positive copper bar (202) and a negative copper bar (203);
the positive copper bar (202) is connected with the positive electrodes of the capacitor cores (201) through welding;
and the negative copper bar (203) is connected with the cathodes of the plurality of capacitor cores (201) by welding.
8. The machine controller according to claim 7, characterized in that a first end of the positive copper bar (202) along a preset direction is provided with at least one first positive terminal (2021), and a second end opposite to the first end is provided with at least one second positive terminal (2022), and the preset direction is along the direction from the power module (3) to the direct current bus capacitor module (2);
at least one first negative terminal (2031) is arranged at a third end of the negative copper bar (203) along the preset direction, and at least one second negative terminal (2032) is arranged at a fourth end opposite to the third end;
the first positive terminal (2021), the second positive terminal (2022), the first negative terminal (2031), and the second negative terminal (2032) all cross over the separator (103) and are located outside the accommodating space;
the direct current bus capacitor module (2) is electrically connected to the power module (3) via the first positive terminal (2021) and the first negative terminal (2031).
9. A power drive system, comprising: a drive motor, a power battery, and a motor controller as claimed in any one of claims 1 to 8;
the power battery is connected with the direct current bus capacitor module of the motor controller;
the driving motor is connected with the power module of the motor controller.
10. An electric vehicle, comprising: the power drive system of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921848440.7U CN210694652U (en) | 2019-10-30 | 2019-10-30 | Motor controller, power driving system and electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921848440.7U CN210694652U (en) | 2019-10-30 | 2019-10-30 | Motor controller, power driving system and electric automobile |
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| CN210694652U true CN210694652U (en) | 2020-06-05 |
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| CN201921848440.7U Active CN210694652U (en) | 2019-10-30 | 2019-10-30 | Motor controller, power driving system and electric automobile |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112953348A (en) * | 2021-01-25 | 2021-06-11 | 中国第一汽车股份有限公司 | Double-motor inverter and automobile |
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2019
- 2019-10-30 CN CN201921848440.7U patent/CN210694652U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112953348A (en) * | 2021-01-25 | 2021-06-11 | 中国第一汽车股份有限公司 | Double-motor inverter and automobile |
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