CN101500398A - Heat radiation structure for motor driver - Google Patents
Heat radiation structure for motor driver Download PDFInfo
- Publication number
- CN101500398A CN101500398A CNA2008102258991A CN200810225899A CN101500398A CN 101500398 A CN101500398 A CN 101500398A CN A2008102258991 A CNA2008102258991 A CN A2008102258991A CN 200810225899 A CN200810225899 A CN 200810225899A CN 101500398 A CN101500398 A CN 101500398A
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- motor driver
- copper foil
- power chip
- surface copper
- heat
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
Abstract
The invention discloses a radiating structure of a motor driver, comprising a power chip. The upper surface of the power chip is connected with the inner wall of an upper shell of the motor driver through an upper heat conducting rubber gasket, and the lower surface of the power chip is fixed on an upper surface copper foil of a circuit plate; a lower surface copper foil of the circuit plate is connected with the inner wall of a lower shell of the motor driver through a lower heat conducting rubber gasket, and the upper surface copper foil is connected with the lower surface copper foil through a through hole of the circuit plate; the upper heat conducting rubber gasket and the lower heat conducting rubbe gasket are flexible heat conducting rubber gaskets; the two ends of the upper shell and the two ends of the lower shell of the motor driver are respectively connected together through a left end cover and a right end cover of the motor driver; and the upper surface of the upper shell of the motor driver is of a radiating fin shape. The radiating structure increases the contact area of the power chip and the shell of the motor driver, decreases the thermal contact resistance and improves the radiation efficiency. In addition, the radiating structure has the advantages of reasonable design, compact structure and high radiation efficiency.
Description
Technical field
The present invention relates to a kind of motor driver, be specifically related to a kind of heat radiation structure for motor driver.
Background technology
Motor driver in the course of the work, its power chip is because resistance loss and switching loss can continue to produce a large amount of heats, these heats must be by heat abstractor in time, effectively shed, otherwise will cause motor driver decreased performance even overheated burning, so the radiator structure design is one of key technology that influences the motor driver performance.Traditional motor driver is typically equipped with bulky fin and solves heat dissipation problem by installing measures such as fan additional.
Be controlled to be with micro robot in the various fields of representative, be subjected to the restriction of aspects such as installation volume and weight, require the motor driver volume small and exquisite as far as possible, and huge fin and radiator fan are the principal contradictions that restriction motor driver volume further reduces.
Chinese patent CN200962710Y " improvement of motor driver radiator structure " has provided a kind of motor driver radiator structure, and motor driver is a motor driver.Mainly be that the two sides forms upright heat sink strip and oblique sheet fin on the motor driven radiator body, the its inner rim face is that even surface is to install motor drive unit, and, even surface easily heat energy is spread out of rapidly because of having bigger heat-conducting area, reduce the motor drive unit temperature, between oblique sheet fin and oblique sheet fin, have one widely tiltedly to go out air-vent and can dispel the heat rapidly in addition with supplying heat source, therefore describedly be installed in motor drive unit on the motor driven radiator because of next-door neighbour's motor driven radiator, the thermal source that is produced conducts heat rapidly to the motor driven radiator, via upright heat sink strip and oblique sheet fin thermal source is derived rapidly, be in low-temperature condition forever with the maintenance motor drive unit, and can continue the purpose of operation forever.
There is following shortcoming in the above motor driver radiator structure improving technology:
1, motor drive unit only links to each other with radiator body by the inner edge surface of upright heat sink strip with oblique sheet fin, like this, has only a contact-making surface between motor drive unit and the radiator body, and radiating efficiency is restricted.
2, this motor driver radiator structure has only adopted the two sides as radiating surface, and other face (in general, the motor driver of cuboid has six faces) that does not make full use of motor driver dispels the heat, and radiating efficiency is low.
Summary of the invention
The objective of the invention is defective, provide a kind of reasonable in design, structure compact more and can improve the heat radiation structure for motor driver of radiating efficiency at above-mentioned prior art.
The technical scheme taked of the present invention is to achieve these goals: a kind of heat radiation structure for motor driver, comprise power chip, the upper surface of described power chip links to each other with the inwall of motor driver upper shell by last heat conduction rubber cushion, the lower surface of described power chip is fixed on the upper surface copper foil of circuit board, the lower surface Copper Foil of described circuit board links to each other with the inwall of motor driver lower house by following heat conduction rubber cushion, links to each other by circuit board via between described upper surface copper foil and the lower surface Copper Foil.
The lower surface of described power chip is welded on the upper surface copper foil of circuit board by scolding tin.
The described heat conduction rubber cushion of going up is flexible heat conductive rubber pad with following heat conduction rubber cushion.
The two ends of described motor driver upper and lower casing link to each other with the motor driver right end cap by the motor driver left end cap respectively.
The upper surface of described motor driver upper shell is all or part of to be fin shape.
Described motor driver upper shell, motor driver lower house, motor driver left end cap and motor driver right end cap are the metal material of aluminum alloy material or other good heat conductivity
The invention has the beneficial effects as follows: make the power chip of motor driver to contact with the motor driver housing by the radiating surface of two low thermal resistances by adopting two-sided radiator structure, thereby the power chip of motor driver and the contact area between the motor driver housing have been increased greatly, reduce contact heat resistance, improved radiating efficiency.Simultaneously,, under the prerequisite that does not increase the motor driver volume, increased the efficiently radiates heat area to greatest extent, improved radiating efficiency by adopting integrated metal shell design.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the structural representation of motor driver housing of the present invention.
Among the figure: 1 motor driver upper shell, heat conduction rubber cushion on 2,3 power chips, 4 upper surface copper foil, 5 lower surface Copper Foils, 6 circuit board via, 7 times heat conduction rubber cushions, 8 circuit boards, 9 motor driver control units, 10 motor driver lower houses.
Embodiment
The invention will be further described below in conjunction with the drawings and specific embodiments, but not as a limitation of the invention.
Referring to Fig. 1, a kind of heat radiation structure for motor driver, comprise power chip 3, the upper surface of power chip 3 links to each other with the inwall of motor driver upper shell 1 by last heat conduction rubber cushion 2, the lower surface of power chip 1 is welded on the upper surface copper foil 4 of circuit board 8 by scolding tin, the lower surface Copper Foil 5 of circuit board 8 passes through down, and heat conduction rubber cushion 7 links to each other with the inwall of motor driver lower house 10, link to each other by set of circuits plate via hole 6 between upper surface copper foil 4 and the lower surface Copper Foil 5, motor driver control unit 9 is positioned on the circuit board 8, the motor driver enclosure interior.
Referring to Fig. 2, the two ends of motor driver upper and lower casing 1,10 link to each other with motor driver right end cap 14 by motor driver left end cap 13 respectively.The upper surface of motor driver upper shell 1 is all or part of to be fin shape.Motor driver upper shell 1, motor driver lower house 10, motor driver left end cap 13 and motor driver right end cap 14 are metal material, usually adopt aluminium alloy, in order to reach better radiating effect, the upper surface of motor driver upper shell 1 can all or part ofly be made fin shape, adopt so integrated metal shell design, making has increased the efficiently radiates heat area to greatest extent under the prerequisite that does not increase the motor driver volume, thereby has improved radiating efficiency.
Principle of the present invention:
Last heat conduction rubber cushion 2 is flexible heat conductive rubber pad with following heat conduction rubber cushion 7, should guarantee during installation that flexible heat conductive rubber pad is subjected to certain pressure distortion, thereby play the purpose that compresses power chip 3 and circuit board 8, reduces contact heat resistance.In last heat conduction rubber cushion 2 and the following heat conduction rubber cushion 7 one or all can also adopt other Heat Conduction Materials, alternative such as heat conductive silica gel, heat-conducting silicone grease etc.
Above-described embodiment, the present invention embodiment a kind of more preferably just, the common variation that those skilled in the art carries out in the technical solution of the present invention scope and replacing all should be included in protection scope of the present invention.
Claims (6)
1. heat radiation structure for motor driver, comprise power chip, it is characterized in that: the upper surface of described power chip links to each other with the inwall of motor driver upper shell by last heat conduction rubber cushion, the lower surface of described power chip is fixed on the upper surface copper foil of circuit board, the lower surface Copper Foil of described circuit board links to each other with the inwall of motor driver lower house by following heat conduction rubber cushion, links to each other by circuit board via between described upper surface copper foil and the lower surface Copper Foil.
2. heat radiation structure for motor driver according to claim 1 is characterized in that: the lower surface of described power chip is welded on the upper surface copper foil of circuit board by scolding tin.
3. heat radiation structure for motor driver according to claim 1 is characterized in that: the described heat conduction rubber cushion of going up is flexible heat conductive rubber pad with following heat conduction rubber cushion.
4. according to claim 1,2 or 3 described heat radiation structure for motor driver, it is characterized in that: the two ends of described motor driver upper and lower casing link to each other with the motor driver right end cap by the motor driver left end cap respectively.
5. heat radiation structure for motor driver according to claim 4 is characterized in that: the upper surface of described motor driver upper shell is all or part of to be fin shape.
6. heat radiation structure for motor driver according to claim 4 is characterized in that: described motor driver upper shell, motor driver lower house, motor driver left end cap and motor driver right end cap are the metal material of aluminum alloy material or other good heat conductivity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102258991A CN101500398A (en) | 2008-11-05 | 2008-11-05 | Heat radiation structure for motor driver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102258991A CN101500398A (en) | 2008-11-05 | 2008-11-05 | Heat radiation structure for motor driver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101500398A true CN101500398A (en) | 2009-08-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008102258991A Pending CN101500398A (en) | 2008-11-05 | 2008-11-05 | Heat radiation structure for motor driver |
Country Status (1)
| Country | Link |
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| CN (1) | CN101500398A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101853949A (en) * | 2010-06-12 | 2010-10-06 | 新源动力股份有限公司 | Wind-radiating vehicular fuel cell |
| CN103056568A (en) * | 2013-02-03 | 2013-04-24 | 侯如升 | Electric welding machine end cover with heat radiating function |
| CN104022695A (en) * | 2014-06-23 | 2014-09-03 | 济南科亚电子科技有限公司 | Double brush direct-current driver |
| CN104930378A (en) * | 2015-06-25 | 2015-09-23 | 青岛海信宽带多媒体技术有限公司 | Optical module |
| CN105939592A (en) * | 2015-03-06 | 2016-09-14 | 日立汽车系统株式会社 | Electronic circuit unit |
| CN107920453A (en) * | 2016-10-07 | 2018-04-17 | 株式会社牧田 | Battery pack and electric working machine |
| CN110662397A (en) * | 2019-09-26 | 2020-01-07 | 深圳创维数字技术有限公司 | Heat dissipation design method and heat dissipation structure of electronic equipment and electronic equipment |
| CN110678050A (en) * | 2019-11-05 | 2020-01-10 | 北谷电子有限公司上海分公司 | Heat abstractor and fork truck controller |
| CN111712108A (en) * | 2020-06-29 | 2020-09-25 | 江苏佳润喷灌设备有限公司 | Heat dissipation structure for water pump motor driver |
| WO2022028416A1 (en) * | 2020-08-06 | 2022-02-10 | 苏州旭创科技有限公司 | Optical module housing and optical module |
| CN114148489A (en) * | 2021-12-17 | 2022-03-08 | 浙江佳乐科仪股份有限公司 | Underwater vehicle driving device |
-
2008
- 2008-11-05 CN CNA2008102258991A patent/CN101500398A/en active Pending
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101853949B (en) * | 2010-06-12 | 2012-10-10 | 新源动力股份有限公司 | Wind-radiating vehicular fuel cell |
| CN101853949A (en) * | 2010-06-12 | 2010-10-06 | 新源动力股份有限公司 | Wind-radiating vehicular fuel cell |
| CN103056568A (en) * | 2013-02-03 | 2013-04-24 | 侯如升 | Electric welding machine end cover with heat radiating function |
| CN104022695A (en) * | 2014-06-23 | 2014-09-03 | 济南科亚电子科技有限公司 | Double brush direct-current driver |
| CN105939592A (en) * | 2015-03-06 | 2016-09-14 | 日立汽车系统株式会社 | Electronic circuit unit |
| CN104930378A (en) * | 2015-06-25 | 2015-09-23 | 青岛海信宽带多媒体技术有限公司 | Optical module |
| CN107920453B (en) * | 2016-10-07 | 2021-02-26 | 株式会社牧田 | Battery pack and electric working machine |
| CN107920453A (en) * | 2016-10-07 | 2018-04-17 | 株式会社牧田 | Battery pack and electric working machine |
| US10673106B2 (en) | 2016-10-07 | 2020-06-02 | Makita Corporation | Battery pack and electric working machine |
| CN110662397A (en) * | 2019-09-26 | 2020-01-07 | 深圳创维数字技术有限公司 | Heat dissipation design method and heat dissipation structure of electronic equipment and electronic equipment |
| CN110678050A (en) * | 2019-11-05 | 2020-01-10 | 北谷电子有限公司上海分公司 | Heat abstractor and fork truck controller |
| CN111712108A (en) * | 2020-06-29 | 2020-09-25 | 江苏佳润喷灌设备有限公司 | Heat dissipation structure for water pump motor driver |
| CN111712108B (en) * | 2020-06-29 | 2022-05-03 | 江苏佳润喷灌设备有限公司 | Heat dissipation structure for water pump motor driver |
| WO2022028416A1 (en) * | 2020-08-06 | 2022-02-10 | 苏州旭创科技有限公司 | Optical module housing and optical module |
| CN114148489A (en) * | 2021-12-17 | 2022-03-08 | 浙江佳乐科仪股份有限公司 | Underwater vehicle driving device |
| CN114148489B (en) * | 2021-12-17 | 2023-02-10 | 浙江佳乐科仪股份有限公司 | Underwater vehicle driving device |
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| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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Application publication date: 20090805 |