CN204610006U - A kind of automobile engine cooling fan controller - Google Patents
A kind of automobile engine cooling fan controller Download PDFInfo
- Publication number
- CN204610006U CN204610006U CN201520252884.XU CN201520252884U CN204610006U CN 204610006 U CN204610006 U CN 204610006U CN 201520252884 U CN201520252884 U CN 201520252884U CN 204610006 U CN204610006 U CN 204610006U
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- Prior art keywords
- bonnet
- medium
- pcb board
- power device
- cooling fan
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
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- 238000001816 cooling Methods 0.000 title claims abstract description 33
- 239000004065 semiconductor Substances 0.000 claims abstract description 44
- 238000003466 welding Methods 0.000 claims abstract description 8
- 239000012528 membrane Substances 0.000 claims description 16
- 239000012634 fragment Substances 0.000 claims description 10
- 230000006835 compression Effects 0.000 claims description 8
- 238000007906 compression Methods 0.000 claims description 8
- 239000003292 glue Substances 0.000 claims description 4
- 238000007373 indentation Methods 0.000 claims description 4
- 239000007769 metal material Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 9
- 230000017525 heat dissipation Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 9
- 239000002360 explosive Substances 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000004323 axial length Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The utility model discloses a kind of good heat dissipation effect, the automobile engine cooling fan controller of long service life, comprise shell, pcb board, electric capacity and semiconductor power device, shell comprises protecgulum, housing and bonnet, this bonnet ear end face is provided with radiating fin, housing comprises and encloses frame, described enclosing between the upper frame of frame and lower frame is connected with medium-height trestle, this upper frame is provided with bus connection port, lower frame is provided with separated time connecting port, medium-height trestle is embedded with conducting plate, described pcb board is fixed on medium-height trestle, condenser welding to be connected on pcb board and to be arranged in left side or the right side of medium-height trestle, the internal surface of this electric capacity and bonnet is fitted, semiconductor power device to be welded on pcb board and to be arranged in right side or the left side of medium-height trestle, this semiconductor power device is close to by hold-down mechanism and rear interior surface, described protecgulum is arranged at waterproof and breathable structure.
Description
Technical field
The utility model relates to a kind of controller, refers to a kind of automobile engine cooling fan controller especially.
Background technique
Automobile engine cooling fan is mainly used for carrying out cooling down to motor car engine, and generally this cooling fan is communicated with its controller and is all installed in engine compartment, and when engine behind front wheel, this cooling fan and controller are just arranged on the headstock of automobile.The control circuit of controller and controlling method are ripe gradually along with the development of current automobile, the general PWM that can adopt controls to regulate wind speed accurately, it is that one carries out digitally coded method to analog signal level, and this controlling method is also perfect all gradually in the cooling of vehicle motor, therefore, in order to realize the method, current controller architecture mainly comprises 1, shell, be used for being fixed being installed on inner each electrical apparatus element and sealing, need the effect reaching waterproof and breathable, this shell is provided with the bus connection port being electrically connected for ECU in automobile and being connected with power supply, and the separated time connecting port for electrically connecting in cooling fan, the outer installment of shell has radiating fin, 2.PCB circuit board, for the control circuit of the above-mentioned controlling method of integration realization, 3. electric capacity, semiconductor power device and inductance, the quantity of electric capacity and semiconductor power device is not etc., it is generally two or more, these parts all need to dispel the heat, especially semiconductor power device, its heat dissipating capacity is very large, therefore, this controller is all generally install together with cooling fan, dispels the heat by cooling fan.But the internal structure of current controller unreasonable, inner semiconductor power device and inductance to be installed on pcb board and to be positioned at the front side of pcb board, and pcb board is covered, electric capacity then lays respectively at the right and left of pcb board, this distribution is also unreasonable, semiconductor power device heating value is the most serious, pcb board also has certain heating value, caused there will be more serious heat trnasfer between the two when pcb board covers, pcb board temperature is caused to improve, impact normal work time serious, electric capacity is in the both sides of PCB simultaneously, cause the heat of electric capacity to compare dispersion not easily to shed, in addition, because current controller dispels the heat together with cooling fan, in order to the air quantity by cooling fan, this controller needs the downstream being fixed on cooling fan, will increase the axial length of whole cooling fan like this, so in principle, the space of engine compartment is larger, the space of operator cabin is less, and the increase of engine compartment axial space will affect the space of operator cabin.In addition, because controller needs to reach the ventilative function of water proof and dust proof, therefore just need on the controller to arrange waterproof and breathable structure, and current controller is provided with mazy water proof and dust proof passage on the controller, and post waterproof ventilated membrane in the inside of this passage, right this structure is very complicated, although successful, but there is a fatal defect, the inside that this waterproof ventilated membrane is attached to passage is positioned at controller, so when controller external pressure is greater than the pressure of controller inside, waterproof ventilated membrane just may come off, thus lose waterproof and breathable effect.
Model utility content
Technical problem to be solved in the utility model is: the automobile engine cooling fan controller providing a kind of good heat dissipation effect, long service life
For solving the problems of the technologies described above, the technical solution of the utility model is: a kind of automobile engine cooling fan controller, comprise closed shell and be arranged at the pcb board in shell, be installed on the electric capacity on pcb board and semiconductor power device, described shell comprises protecgulum, housing and bonnet, this bonnet is metal material and ear end face is provided with some radiating fins, described protecgulum is sealingly fastened on the front-end face of housing, described bonnet is sealingly fastened on the ear end face of housing, described housing comprises and encloses frame, described enclosing between the upper frame of frame and lower frame is connected with medium-height trestle, this upper frame is provided with bus connection port, described lower frame is provided with separated time connecting port, described medium-height trestle is embedded with the conducting plate be connected with the circuit on separated time connecting port and PCB by bus connection port, described pcb board is fixed on medium-height trestle, described condenser welding to be connected on pcb board and to be arranged in left side or the right side of medium-height trestle, the internal surface of this electric capacity and bonnet is fitted, described semiconductor power device to be welded on pcb board and to be arranged in right side or the left side of medium-height trestle, this semiconductor power device is close to by hold-down mechanism and rear interior surface, described protecgulum is arranged at waterproof and breathable structure.
As the preferred scheme of one, the internal surface of described bonnet is provided with fixing lug boss, and described hold-down mechanism is installed in fixing lug boss and compresses semiconductor power device, is provided with insulating heat-conductive diaphragm between this semiconductor power device and fixing lug boss.
As the preferred scheme of one, described hold-down mechanism comprises compression shell fragment, and this compression shell fragment is provided with mounting hole, and this fixing lug boss is provided with erection column, and this compression shell fragment to be fixed on erection column and to compress the front-end face of described semiconductor power device.
As the preferred scheme of one, the upper end portion of described erection column is provided with several capel grooves, and the hole of described mounting hole is along being provided with several radial indentation, and this mounting hole embeds in the capel groove of described erection column.
As the preferred scheme of one, bondd by heat-conducting glue between described electric capacity and rear interior surface fixing.
As the preferred scheme of one, described waterproof and breathable structure comprises the air hole be arranged on protecgulum, the outer surface of this protecgulum is fitted with the waterproof ventilated membrane covering air hole, this protecgulum is fitted with label film, and this label film covers described waterproof ventilated membrane and is provided with the through hole corresponding with vent.
As the preferred scheme of one, each radiating fin on described bonnet is that left and right extends and be arranged in parallel, this radiating fin comprise one section be in lid inner segment within the scope of bonnet and one section be in the outer section of the extraneous lid of bonnet, this bonnet is provided with the connecting sheet facilitating controller fixing.
As the preferred scheme of one, the outer section of described lid and semiconductor power device are in the same side of bonnet.
As the preferred scheme of one, described PCB is rectangular plate, and this pcb board is provided with bar-shaped trough near each right angle.
As the preferred scheme of one, described conducting plate is provided with several and protrudes out the pin exposed from medium-height trestle backward, and on this pcb board, correspondence is provided with several welding holes mated with pin one_to_one corresponding.
As the preferred scheme of one, described medium-height trestle is also provided with the inductance mounting groove for fixed inductance, this medium-height trestle is provided with facilitate inductance leads to pass through hole.
After have employed technique scheme, effect of the present utility model is: to be connected on pcb board due to described condenser welding and to be arranged in left side or the right side of medium-height trestle, the internal surface of this electric capacity and bonnet is fitted, described semiconductor power device to be welded on pcb board and to be arranged in right side or the left side of medium-height trestle, this semiconductor power device is close to by hold-down mechanism and rear interior surface, semiconductor power device is not covered by pcb board, the heat produced easily is taken away by bonnet, simultaneously, the heat that semiconductor power device produces can not pass to pcb board and electric capacity again, whole controller good heat dissipation effect, thus extend the working life of controller.
Again because the internal surface of described bonnet is provided with fixing lug boss, described hold-down mechanism is installed in fixing lug boss and compresses semiconductor power device, insulating heat-conductive diaphragm is provided with between this semiconductor power device and fixing lug boss, this fixing lug boss be semiconductor power device fixedly provide platform, the heat simultaneously also facilitating semiconductor power device to produce is dispersed on bonnet.
Again because the upper end portion of described erection column is provided with several capel grooves, the hole of described mounting hole is along being provided with several radial indentation, this mounting hole embeds in the capel groove of described erection column, and this means of fixation structure is simple, and mounting hole embeds different capel grooves just adjustable different pressure.
Again because described waterproof and breathable structure comprises the air hole be arranged on protecgulum, the outer surface of this protecgulum is fitted with the waterproof ventilated membrane covering air hole, this protecgulum is fitted with label film, this label film covers described waterproof ventilated membrane and is provided with the through hole corresponding with vent, be in the outer surface of protecgulum due to this waterproof ventilated membrane and covered by label film, waterproof ventilated membrane can not come off because controller inside and outside differential pressure is excessive, waterproof and breathable lasts.
Each radiating fin on described bonnet is that left and right extends and be arranged in parallel, this radiating fin comprise one section be in lid inner segment within the scope of bonnet and one section be in the outer section of the extraneous lid of bonnet, this bonnet is provided with the connecting sheet facilitating controller fixing.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is the axonometric drawing of the utility model embodiment 1;
Fig. 2 is the explosive view of the utility model embodiment 1;
Fig. 3 is another explosive view of the utility model embodiment 1;
Fig. 4 is the explosive view of the utility model embodiment 1 housing, pcb board, electric capacity, semiconductor power device;
Fig. 5 is the explosive view of another angle of the utility model embodiment housing, pcb board, electric capacity, semiconductor power device;
Fig. 6 is the axonometric drawing of the utility model embodiment 2;
Fig. 7 is the explosive view of the utility model embodiment 2;
In accompanying drawing: 1. bonnet; 2. housing; 21. enclose frame; 22. medium-height trestles; 23. bus connection ports; 24. separated time connecting ports; 25. inductance mounting grooves; 3. protecgulum; 4. electric capacity; 5. semiconductor power device; 6.PCB plate; 7. compress shell fragment; 8. waterproof ventilated membrane; 9. label film; 10. inductance; 11. radiating fins; The outer section of 111. lid; 112. lid inner segments; 12. fixing lug boss; 13. erection columns; 14. conducting plates.
Embodiment
Below by specific embodiment, the utility model is described in further detail.
Embodiment 1
As shown in Figure 1, 2, a kind of automobile engine cooling fan controller, comprise closed shell and be arranged at pcb board 6 in shell, be installed on electric capacity 4 on pcb board 6 and semiconductor power device 5, described shell comprises protecgulum 3, housing 2 and bonnet 1, front and back described in the present embodiment are determined with Fig. 2 middle controller present position, be positioned near observer on the left of paper for front, be positioned on the right side of paper away from observer be after, be positioned at above paper for upper, under being positioned at being below paper.This bonnet 1 is metal material and ear end face is provided with some radiating fins 11, described protecgulum 3 is sealingly fastened on the front-end face of housing 2, described bonnet 1 is sealingly fastened on the ear end face of housing 2, realized by bolt fixing between described bonnet 1 and housing 2, and carry out surrounding sealing by sealer.Described protecgulum 3 is provided with fixing edge, and described housing 2 comprises and encloses frame 21, and this circumferential side frame of enclosing the front end of frame 21 is provided with caulking groove, this protecgulum 3 fixing along to insert in caulking groove and to carry out sealing by fixing glue fixing.As shown in Figure 1, 2, each radiating fin 11 on described bonnet 1 extends in left and right and be arranged in parallel, this radiating fin 11 comprise one section be in lid inner segment 112 in bonnet 1 scope and one section be in the outer section 111 of the extraneous lid of bonnet 1, this bonnet 1 is provided with the connecting sheet facilitating controller fixing.The outer section 111 of described lid and semiconductor power device 5 are in the same side of bonnet 1.That is, in the present embodiment, semiconductor power device 5 is fixed on right side, therefore, covering outer section 111 is also be in right side, like this, owing to covering the existence of outer section 111, therefore in the fixation procedure of reality, the outer section 111 of lid of this controller can extend into the air side of cooling fan, so just without the need to control entirety is in air side, the outer section 111 of lid can be in air side, cooling air directly can flow at radiating fin 11 after flowing into the outer section 111 of lid, thus reach radiating effect, and the outer section 111 of lid is that the wind that is directly cooled is swept, therefore, the temperature cooling effect of the outer section 111 of whole controller lid is the most obvious, and be just in outer this side of section 111 of lid as heating semiconductor power device 5 the most serious, thus heat is more prone to shed, simultaneously, the existence of covering outer section 111 can reduce the installing space of controller and cooling fan, reduce the length of engine compartment, the space reduced can be used for expanding drives the interior space, improve the travelling comfort of driver.
Described enclosing between the upper frame of frame 21 and lower frame is connected with medium-height trestle 22, this upper frame is provided with bus connection port 23, described lower frame is provided with separated time connecting port 24, the quantity of this separated time connecting port 24 is mated with radiation fan, described medium-height trestle 22 is embedded with the conducting plate 14 be connected with the circuit on separated time connecting port 24 and PCB by bus connection port 23, described pcb board 6 to be fixed on medium-height trestle 22 and near bonnet 1, described electric capacity 4 to be welded on pcb board 6 and to be arranged in left side or the right side of medium-height trestle 22, this electric capacity 4 is fitted with the internal surface of bonnet 1, specifically bondd by heat-conducting glue between described electric capacity 4 and bonnet 1 internal surface fixing.Described conducting plate 14 is provided with several and protrudes out the pin exposed from medium-height trestle 22 backward, and on this pcb board 6, correspondence is provided with several welding holes mated with pin one_to_one corresponding.Described PCB is rectangular plate, and this pcb board 6 is provided with bar-shaped trough near each right angle, and this bar-shaped trough effectively can reduce pcb board 6 in the distortion of installing and in welding process.Described semiconductor power device 5 to be welded on pcb board 6 and to be arranged in right side or the left side of medium-height trestle 22, electric capacity 4 and semiconductor power device 5 are in the left and right not homonymy of medium-height trestle 22, this semiconductor power device 5 is close to by hold-down mechanism and bonnet 1 internal surface, and described protecgulum 3 is arranged at waterproof and breathable structure.
Wherein, preferably, the internal surface of described bonnet 1 is provided with fixing lug boss 12, and described hold-down mechanism is installed in fixing lug boss 12 and compresses semiconductor power device 5, is provided with insulating heat-conductive diaphragm between this semiconductor power device 5 and fixing lug boss 12.Described hold-down mechanism comprises and compresses shell fragment 7, and this compression shell fragment 7 is provided with mounting hole, and this fixing lug boss 12 is provided with erection column 13, and this compression shell fragment 7 to be fixed on erection column 13 and to compress the front-end face of described semiconductor power device 5.The upper end portion of described erection column 13 is provided with several capel grooves, and the hole of described mounting hole is along being provided with several radial indentation, and this mounting hole embeds in the capel groove of described erection column 13.
Described waterproof and breathable structure comprises the air hole be arranged on protecgulum 3, the outer surface of this protecgulum 3 is fitted with the waterproof ventilated membrane 8 covering air hole, this protecgulum 3 is fitted with label film 9, this label film 9 covers described waterproof ventilated membrane 8 and is provided with the through hole corresponding with vent, because waterproof ventilated membrane 8 is the outer surfaces being fitted in protecgulum 3, and utilize again label film 9 to cover, therefore, waterproof ventilated membrane 8 is with regard to difficult drop-off.
Certainly, this controller additionally uses inductance 10, therefore, described medium-height trestle 22 is also provided with inductance 10 mounting groove 25 for fixed inductance 10, this medium-height trestle 22 is provided with facilitate inductance 10 go between through through hole, this inductance 10 mounting groove 25 is arranged at the front end of medium-height trestle 22, inductance 10 due to quantity few, the heat of generation is few, therefore inductance 10 and pcb board 6, electric capacity 4, semiconductor power device 5 is isolated, and radiating effect is better.
Embodiment 2
As shown in Figure 6,7, structure in the present embodiment is substantially identical with the structure in embodiment 1, the radiating fin of the bonnet just in the present embodiment is different, in the present embodiment, radiating fin 11 extends in left and right and be arranged in parallel, and this radiating fin 11 only includes one section and is in the lid inner segment 112 in bonnet 1 scope and is not in section 111 outside the extraneous lid of bonnet 1.Equally, although the space of engine compartment cannot be reduced, the radiating efficiency of controller can still be improved.
The above embodiment is only the description to the preferred embodiment of the present invention; not as limiting the scope of the invention; design on the basis of spirit not departing from the present invention; the various distortion make technical solution of the present invention and transformation, all should fall in protection domain that claims of the present invention determine.
Claims (10)
1. an automobile engine cooling fan controller, comprise closed shell and be arranged at the pcb board in shell, be installed on the electric capacity on pcb board and semiconductor power device, it is characterized in that: described shell comprises protecgulum, housing and bonnet, this bonnet is metal material and ear end face is provided with some radiating fins, described protecgulum is sealingly fastened on the front-end face of housing, described bonnet is sealingly fastened on the ear end face of housing, described housing comprises and encloses frame, described enclosing between the upper frame of frame and lower frame is connected with medium-height trestle, this upper frame is provided with bus connection port, described lower frame is provided with separated time connecting port, described medium-height trestle is embedded with the conducting plate be connected with the circuit on separated time connecting port and PCB by bus connection port, described pcb board is fixed on medium-height trestle, described condenser welding to be connected on pcb board and to be arranged in left side or the right side of medium-height trestle, the internal surface of this electric capacity and bonnet is fitted, described semiconductor power device to be welded on pcb board and to be arranged in right side or the left side of medium-height trestle, this semiconductor power device is close to by hold-down mechanism and rear interior surface, described protecgulum is arranged at waterproof and breathable structure.
2. a kind of automobile engine cooling fan controller as claimed in claim 1, it is characterized in that: the internal surface of described bonnet is provided with fixing lug boss, described hold-down mechanism is installed in fixing lug boss and compresses semiconductor power device, is provided with insulating heat-conductive diaphragm between this semiconductor power device and fixing lug boss.
3. a kind of automobile engine cooling fan controller as claimed in claim 2, it is characterized in that: described hold-down mechanism comprises compression shell fragment, this compression shell fragment is provided with mounting hole, this fixing lug boss is provided with erection column, and this compression shell fragment to be fixed on erection column and to compress the front-end face of described semiconductor power device.
4. a kind of automobile engine cooling fan controller as claimed in claim 3, it is characterized in that: the upper end portion of described erection column is provided with several capel grooves, the hole of described mounting hole is along being provided with several radial indentation, and this mounting hole embeds in the capel groove of described erection column.
5. a kind of automobile engine cooling fan controller as claimed in claim 4, is characterized in that: bondd by heat-conducting glue between described electric capacity and rear interior surface fixing.
6. a kind of automobile engine cooling fan controller as described in any one of claim 1 to 5, it is characterized in that: described waterproof and breathable structure comprises the air hole be arranged on protecgulum, the outer surface of this protecgulum is fitted with the waterproof ventilated membrane covering air hole, this protecgulum is fitted with label film, and this label film covers described waterproof ventilated membrane and is provided with the through hole corresponding with vent.
7. a kind of automobile engine cooling fan controller as claimed in claim 6, it is characterized in that: each radiating fin on described bonnet is that left and right extends and be arranged in parallel, this radiating fin comprise one section be in lid inner segment within the scope of bonnet and one section be in the outer section of the extraneous lid of bonnet, this bonnet is provided with the connecting sheet facilitating controller fixing.
8. a kind of automobile engine cooling fan controller as claimed in claim 7, it is characterized in that: the outer section of described lid and semiconductor power device are in the same side of bonnet, described PCB is rectangular plate, and this pcb board is provided with bar-shaped trough near each right angle.
9. a kind of automobile engine cooling fan controller as claimed in claim 8, it is characterized in that: described conducting plate is provided with several and protrudes out the pin exposed from medium-height trestle backward, on this pcb board, correspondence is provided with several welding holes mated with pin one_to_one corresponding.
10. a kind of automobile engine cooling fan controller as claimed in claim 9, is characterized in that: described medium-height trestle is also provided with the inductance mounting groove for fixed inductance, this medium-height trestle is provided with facilitate inductance leads to pass through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520252884.XU CN204610006U (en) | 2015-04-24 | 2015-04-24 | A kind of automobile engine cooling fan controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520252884.XU CN204610006U (en) | 2015-04-24 | 2015-04-24 | A kind of automobile engine cooling fan controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204610006U true CN204610006U (en) | 2015-09-02 |
Family
ID=53962579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520252884.XU Withdrawn - After Issue CN204610006U (en) | 2015-04-24 | 2015-04-24 | A kind of automobile engine cooling fan controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204610006U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104863686A (en) * | 2015-04-24 | 2015-08-26 | 江苏朗信电气有限公司 | Controller for cooling fan of automobile engine |
| CN108223418A (en) * | 2018-02-12 | 2018-06-29 | 安徽江淮汽车集团股份有限公司 | External hanging type cooling fan controller |
| CN111852927A (en) * | 2020-07-31 | 2020-10-30 | 深圳市致诚达科技有限公司 | Drive control device applied to heat dissipation system of rail transit fan |
| CN112867231A (en) * | 2020-12-28 | 2021-05-28 | 安徽展新电子有限公司 | Do benefit to radiating multilayer printed circuit board |
-
2015
- 2015-04-24 CN CN201520252884.XU patent/CN204610006U/en not_active Withdrawn - After Issue
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104863686A (en) * | 2015-04-24 | 2015-08-26 | 江苏朗信电气有限公司 | Controller for cooling fan of automobile engine |
| CN104863686B (en) * | 2015-04-24 | 2017-12-26 | 江苏朗信电气有限公司 | A kind of automobile engine cooling fan controller |
| CN108223418A (en) * | 2018-02-12 | 2018-06-29 | 安徽江淮汽车集团股份有限公司 | External hanging type cooling fan controller |
| CN108223418B (en) * | 2018-02-12 | 2019-06-28 | 安徽江淮汽车集团股份有限公司 | External hanging type cooling fan controller |
| CN111852927A (en) * | 2020-07-31 | 2020-10-30 | 深圳市致诚达科技有限公司 | Drive control device applied to heat dissipation system of rail transit fan |
| CN112867231A (en) * | 2020-12-28 | 2021-05-28 | 安徽展新电子有限公司 | Do benefit to radiating multilayer printed circuit board |
| CN112867231B (en) * | 2020-12-28 | 2022-03-15 | 安徽展新电子有限公司 | Do benefit to radiating multilayer printed circuit board |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150902 Effective date of abandoning: 20171226 |