CN201590760U - DC/DC power converter - Google Patents
DC/DC power converter Download PDFInfo
- Publication number
- CN201590760U CN201590760U CN2009202998110U CN200920299811U CN201590760U CN 201590760 U CN201590760 U CN 201590760U CN 2009202998110 U CN2009202998110 U CN 2009202998110U CN 200920299811 U CN200920299811 U CN 200920299811U CN 201590760 U CN201590760 U CN 201590760U
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- circuit
- power supply
- supply changeover
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- 238000006243 chemical reaction Methods 0.000 claims description 11
- 230000001012 protector Effects 0.000 claims description 6
- 239000003990 capacitor Substances 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract description 7
- 230000017525 heat dissipation Effects 0.000 abstract description 2
- 230000007257 malfunction Effects 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 abstract 1
- 230000003068 static effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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Abstract
The utility model discloses a DC/DC power converter, which comprises an input circuit (1), a voltage changing circuit (2) and an output circuit (3), wherein the voltage changing circuit (2) is provided with a pulse signal generator (4), a trigger (5) and a filter circuit (6). By adopting the technical scheme, the DC/DC power converter can supply stable direct-current power for low-voltage electric appliances of an automobile, has high converting efficiency reaching 94% in maximum and fine heat-dissipation performance, can decrease the volume of a radiator and reduce heating value, can continuously run in heavy load, can output maximum current within one hour, and has low static power consumption. Besides, the DC/DC power converter outputs stable voltage by adopting soft start technology, outputs over-current limit, has output short circuit protection, can not be damaged when in short circuit output for a short time or a long time, automatically recovers normal work after fault clearance, has complete protecting functions including low-voltage protection, output over-voltage protection, circuit malfunction protection and the like, and improve circuit reliability.
Description
Technical field
The utility model belongs to the technical field of automotive electrical system, relates to the DC power supply technology on the automobile, and more particularly, the utility model relates to a kind of DC/DC power supply changeover device.
Background technology
The hybrid vehicle of electric automobile or employing fuel, battery, its motor generally adopts the high voltage direct current battery as power supply.Therefore, high-voltage battery system is electric automobile or energy source electronic and fuel mix power vehicle car load, for car load provides the driving electric energy, can be called the blood of electric automobile.The type of battery system, volume, quality, shape and technical parameter have determined the power performance of electric automobile, are one of most important subsystems of electric automobile.The battery system of electric automobile all has higher specific energy and specific power, with the continual mileage that satisfies automobile and the requirement of dynamic property, also has battery system to have the suitable cycle life of automotive service life, high efficiency, good cost performance and non-maintaining property.
But a lot of electrical appliances as illumination, signal, sound equipment etc., adopt low-voltage dc power supply on the automobile, need to be equipped with in addition the low-voltage direct battery generally speaking.But can cause cost to increase, and the damage of battery is changed pretty troublesome.
How high voltage source being applied to low-voltage electrical appliance, is the important topic that those skilled in the art need solve.
The utility model content
Problem to be solved in the utility model provides a kind of DC/DC power supply changeover device, its objective is that the low-voltage electrical apparatus for automobile provides the galvanic current source.
To achieve these goals, the technical scheme taked of the utility model is:
This DC/DC power supply changeover device provided by the utility model comprises input circuit, voltage conversion circuit and output circuit, and described voltage conversion circuit is provided with pulse signal generator, trigger and filter circuit.
For making the utility model more perfect, more detailed and concrete technical scheme below also further having proposed, to obtain best practical function, realize goal of the invention better, and improve novelty of the present utility model and creativeness:
Described filter circuit adopts the inductor filter circuit of series connection.
Perhaps, described filter circuit adopts capacitor filter in parallel.
Establish the current relay of overcurrent control on the described output circuit.
Establish short-circuit protector on the described output circuit.
Described DC/DC power supply changeover device is provided with thermal relay, and the thermal element excessively of described thermal relay is located at the inside of described DC/DC power supply changeover device, and the contact of described thermal relay is located on the described input circuit.
The shell of described DC/DC power supply changeover device is a full-closed structure, and the surface of shell is provided with densely covered metal fin.
The utility model adopts technique scheme, and the galvanic current source can be provided for the low-voltage electrical apparatus of automobile, and the conversion efficiency height reaches as high as 94%, and heat dispersion is good, can reduce the radiator volume and reduce caloric value; Heavy load operation continuously can be exported maximum current in 1 hour; Quiescent dissipation is low; Adopt soft Starting Technology, output voltage stabilization; The output overcurrent limiting; Output short circuit protection is arranged, and when short time or long-time short circuit output, transducer does not damage, and fault is eliminated the back and recovered operate as normal automatically; Complete defencive function comprises low-voltage variation, output over-voltage protection, circuit malfunction protection etc., improves circuit reliability.
Description of drawings
Below expressed content of each width of cloth accompanying drawing of this specification and the mark among the figure are made brief description:
Fig. 1 is a structural representation of the present utility model.
Be labeled as among the figure:
1, input circuit, 2, voltage conversion circuit, 3, output circuit, 4, pulse signal generator, 5, trigger, 6, filter circuit, 7, current relay, 8, short-circuit protector, 9, thermal relay.
Embodiment
Contrast accompanying drawing below, by description to embodiment, to effect and operation principle, the manufacturing process of the mutual alignment between the shape of embodiment of the present utility model such as related each member, structure, the each several part and annexation, each several part and manipulate method etc., be described in further detail, inventive concept of the present utility model, technical scheme had more complete, accurate and deep understanding to help those skilled in the art.
The of the present utility model structure expressed as Fig. 1, the utility model is a kind of DC/DC power supply changeover device, comprises input circuit 1, voltage conversion circuit 2 and output circuit 3.
Power of the present utility model is from 200W to 800W.When specification was 200W, the rated voltage of input was from 36V to 72V; The rated voltage of output is 12V to 24V.When specification was 300W, the rated voltage of input was from 36V to 72V; The rated voltage of output is 12V.When specification is 400W, the rated voltage of input from 48 to 192V; The rated voltage of output is 12.5V to 27.6V.When specification was 800W, the rated voltage of input was from 120V to 320V; The rated voltage of output is 12.5V to 27.6V.
In order to solve the problem that exists at the described present known technology of this specification background technology part and to overcome its defective, the low-voltage electrical apparatus that is embodied as automobile provides the goal of the invention in galvanic current source, and the technical scheme that the utility model is taked is:
As shown in Figure 1, this DC/DC power supply changeover device provided by the utility model, described voltage conversion circuit 2 is provided with pulse signal generator 4, trigger 5 and filter circuit 6.
Wherein, pulse signal generator 4 sends the pulse signal with certain duty ratio, this pulse signal is delivered to trigger 5, make input circuit 1 by trigger 5, control its conducting and end by pulse signal, so the waveform that trigger 5 produces is the frequency identical pulse current identical with pulse signal, the ceiling voltage of its pulse is identical with the galvanic voltage of input circuit 1 still.
Adopt technique scheme, the galvanic current source can be provided for the low-voltage electrical apparatus of automobile, the conversion efficiency height reaches as high as 94%, and heat dispersion is good, can reduce the radiator volume and reduce caloric value; Heavy load operation continuously can be exported maximum current in 1 hour; Quiescent dissipation is low; Adopt soft Starting Technology, output voltage stabilization.
Below be two different exemplifying embodiments of filter circuit 6:
One, filter circuit 6 described in the utility model adopts the inductor filter circuit of series connection.
Generally between voltage conversion circuit 2 and output circuit 3, a big inductance of connecting is set, plays the pulse current that to have alternating current component and be filtered into galvanic effect.
Two, filter circuit 6 described in the utility model adopts capacitor filter in parallel.
Generally between voltage conversion circuit 2 and output circuit 3, a high capacitance electric capacity in parallel is set, plays the pulse current that to have alternating current component and be filtered into galvanic effect.
Below be concrete structure setting of the present utility model:
Three, establish the current relay 7 of overcurrent control on the output circuit 3 described in the utility model.
To the control of output circuit 3 realization overcurrent, when promptly electric current surpassed permissible value on output circuit 3, current relay 7 automatic disconnections formed the protection to electrical appliance, and electric current automatically resets after reducing, and continues to power.
Four, establish short-circuit protector 8 on the output circuit 3 described in the utility model.
When electrical appliance met accident short circuit, the DC/DC power supply changeover device was closed output circuit 3 automatically by short-circuit protector 8, after fault is got rid of, postponed reasonable time and restarted power supply.
Described short-circuit protector 8 also can be fuse.
Five, DC/DC power supply changeover device described in the utility model is provided with thermal relay 9, and the thermal element excessively of described thermal relay 9 is located at the inside of described DC/DC power supply changeover device, and the contact of described thermal relay 9 is located on the described input circuit 3.
When the DC/DC power supply changeover device internal temperature that provides when the utility model surpasses 90 ℃, close output circuit 3, treat that temperature calls in the following text, reach automatic recovery of power supply when being lower than 60 ℃.
Six, the shell of DC/DC power supply changeover device described in the utility model is a full-closed structure, and the surface of shell is provided with densely covered metal fin.
Whole DC/DC power supply changeover device is a hermetic structure, has favorable waterproof property, and degree of protection can reach IP46.Shell has good performance of heat dissipation.DC/DC power supply changeover device inside is provided with anti-seismic structure, and the antidetonation grade can reach SAEJ1378, reaches the use standard of car electrics fully.
In conjunction with the accompanying drawings the utility model has been carried out exemplary description above; obviously the utility model specific implementation is not subjected to the restriction of aforesaid way; as long as adopted the improvement of the various unsubstantialities that method of the present utility model design and technical scheme carry out; or design of the present utility model and technical scheme are directly applied to other occasion without improving, all within protection range of the present utility model.
Claims (7)
1. a DC/DC power supply changeover device comprises input circuit (1), voltage conversion circuit (2) and output circuit (3), it is characterized in that: described voltage conversion circuit (2) is provided with pulse signal generator (4), trigger (5) and filter circuit (6).
2. according to the described DC/DC power supply changeover device of claim 1, it is characterized in that: described filter circuit (6) adopts the inductor filter circuit of series connection.
3. according to the described DC/DC power supply changeover device of claim 1, it is characterized in that: described filter circuit (6) adopts capacitor filter in parallel.
4. according to claim 1 or 2 or 3 described DC/DC power supply changeover devices, it is characterized in that: the current relay (7) of establishing overcurrent control on the described output circuit (3).
5. according to claim 1 or 2 or 3 described DC/DC power supply changeover devices, it is characterized in that: establish short-circuit protector (8) on the described output circuit (3).
6. according to claim 1 or 2 or 3 described vehicle-mounted charge machines, it is characterized in that: described DC/DC power supply changeover device is provided with thermal relay (9), the thermal element excessively of described thermal relay (9) is located at the inside of described DC/DC power supply changeover device, and the contact of described thermal relay (9) is located on the described input circuit (1).
7. according to claim 1 or 2 or 3 described DC/DC power supply changeover devices, it is characterized in that: the shell of described DC/DC power supply changeover device is a full-closed structure, and the surface of shell is provided with densely covered metal fin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202998110U CN201590760U (en) | 2009-12-31 | 2009-12-31 | DC/DC power converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202998110U CN201590760U (en) | 2009-12-31 | 2009-12-31 | DC/DC power converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201590760U true CN201590760U (en) | 2010-09-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202998110U Expired - Lifetime CN201590760U (en) | 2009-12-31 | 2009-12-31 | DC/DC power converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201590760U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102064810A (en) * | 2010-11-08 | 2011-05-18 | 上海平奉电气技术有限公司 | Electric automobile direct-current high-voltage switch |
| CN102570797A (en) * | 2012-02-17 | 2012-07-11 | 易程（苏州）智能系统有限公司 | Power supply device for video system on high-speed train |
| CN104868334A (en) * | 2015-05-19 | 2015-08-26 | 朱德仲 | Plant crane direct current line expander |
| CN106839281A (en) * | 2017-01-04 | 2017-06-13 | 深圳市菲莱克电子有限公司 | A kind of control system of split-type air conditioner |
| CN109278559A (en) * | 2018-09-05 | 2019-01-29 | 北京长城华冠汽车科技股份有限公司 | Over-voltage protection method, system and the electric car of electric car |
-
2009
- 2009-12-31 CN CN2009202998110U patent/CN201590760U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102064810A (en) * | 2010-11-08 | 2011-05-18 | 上海平奉电气技术有限公司 | Electric automobile direct-current high-voltage switch |
| CN102064810B (en) * | 2010-11-08 | 2012-11-07 | 上海平奉电气技术有限公司 | Electric automobile direct-current high-voltage switch |
| CN102570797A (en) * | 2012-02-17 | 2012-07-11 | 易程（苏州）智能系统有限公司 | Power supply device for video system on high-speed train |
| CN104868334A (en) * | 2015-05-19 | 2015-08-26 | 朱德仲 | Plant crane direct current line expander |
| CN106839281A (en) * | 2017-01-04 | 2017-06-13 | 深圳市菲莱克电子有限公司 | A kind of control system of split-type air conditioner |
| CN106839281B (en) * | 2017-01-04 | 2023-06-09 | 深圳市菲莱克电子有限公司 | Control system of split air conditioner |
| CN109278559A (en) * | 2018-09-05 | 2019-01-29 | 北京长城华冠汽车科技股份有限公司 | Over-voltage protection method, system and the electric car of electric car |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Hangzhou Jieneng Power Co.,Ltd. Assignor: Zotye Holding Group Co., Ltd. Contract record no.: 2013330000302 Denomination of utility model: A DC/DC power converter Granted publication date: 20100922 License type: Exclusive License Record date: 20131010 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151021 Address after: 321301 No. 9 Beihu Road, Yongkang Economic Development Zone, Zhejiang, China Patentee after: Zhejiang Zhongtai Automobile Manufacturing Co., Ltd. Address before: 321301 No. 1 Beihu Road, hardware science and Technology Industrial Park, Zhejiang, Yongkang Patentee before: Zotye Holding Group Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100922 |