CN106379132A - On-load starting system and method for low-voltage direct current power supply - Google Patents
On-load starting system and method for low-voltage direct current power supply Download PDFInfo
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- CN106379132A CN106379132A CN201610830136.4A CN201610830136A CN106379132A CN 106379132 A CN106379132 A CN 106379132A CN 201610830136 A CN201610830136 A CN 201610830136A CN 106379132 A CN106379132 A CN 106379132A
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- voltage
- power supply
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00421—Driving arrangements for parts of a vehicle air-conditioning
- B60H1/00428—Driving arrangements for parts of a vehicle air-conditioning electric
-
- 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
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/88—Optimized components or subsystems, e.g. lighting, actively controlled glasses
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- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rectifiers (AREA)
Abstract
The invention provides an on-load starting system and method for a low-voltage direct current power supply. The low-voltage direct current power supply is connected to a load; the on-load starting system comprises a voltage reduction control unit and a voltage boosting control unit; the voltage reduction control unit is used for adjusting an output voltage provided value to a setting value when the low-voltage direct current power supply abnormally outputs; the setting value is set according to the lowest working voltage of the load; and the voltage boosting control unit is used for controlling the output voltage provided value of the low-voltage direct current power supply to be gradually increased to rated voltage when the low-voltage direct current power supply outputs voltage based on the setting value for preset time. The on-load starting system controls the output voltage when the low-voltage direct current power supply abnormally outputs so as to realize a soft starting load of the low-voltage direct current power supply; soft starting can be realized no matter whether the load has a soft starting protection function; and furthermore, no communication is needed to be built with a load main controller, so that the complexity of the system can be reduced.
Description
Technical field
The present invention relates to power supply field, more particularly, it relates to a kind of low-voltage dc power supply band carry activation system and
Method.
Background technology
In the shortage of Present Global petroleum-based energy, in the case of severe environmental pollution, pure electric automobile relies on energy saving, ring
Border pollute little, low noise and structure is simple, easy to control, easy care the advantages of, become countries in the world emphasis in automobile industry and send out
Exhibition direction.With the fast development of national economy, pure electric bus are increasingly popularized.In pure electric bus, in order to full
Sufficient car air-conditioner fan power supply safety requires, and is generally powered using 27V low-voltage dc power supply, that is, 27V vehicle power is usually used
There is provided electrical source of power for air-conditioning draught fan.
When above-mentioned vehicle power is powered for air-conditioning, due to the operating characteristic of air-conditioning, the condensation fan of idle call will be often
Start and stop, and very big dash current is had when blower fan starts, this will lead to vehicle power to lead to because of the overcurrent protection of itself
Air-conditioning disorderly closedown.
The air-conditioning disorderly closedown leading to tackle the above-mentioned overcurrent protection because of vehicle power itself, generally using replacing
Possess the scheme of the blower fan of soft start function, or make vehicle power and air-conditioning master control borad set up soft the opening that communicate and work in coordination
Wind symptom machine.But either change the blower fan possessing soft start function, or by way of setting up communication with air-conditioning master control borad all
System cost can be increased, increase the work complexity of system, reliability is greatly reduced.
Content of the invention
The technical problem to be solved in the present invention is, for above-mentioned on-board air conditioner Soft Starting System is relatively costly, system work
Make more complicated problem, provide a kind of low-voltage dc power supply band to carry activation system and method.
The technical scheme that the present invention solves above-mentioned technical problem is to provide a kind of low-voltage dc power supply band load activation system,
Described low-voltage dc power supply is connected to load, and described band carries activation system and includes blood pressure lowering control unit and boosting rectifier control unit, its
In：Described blood pressure lowering control unit, in low-voltage dc power supply output abnormality, output voltage set-point being adjusted to adjust
Value, described setting valve sets according to loading minimum running voltage；Described boosting rectifier control unit, in described low-voltage dc power supply
When reaching Preset Time with setting valve output, the output voltage set-point of described low-voltage dc power supply is controlled to be stepped up specified
Voltage.
Carry in activation system in low-voltage dc power supply band of the present invention, described blood pressure lowering control unit includes the first detection
Subelement, the output current for low-voltage dc power supply described in real-time detection when described output current exceedes maximum set value
Confirm low-voltage dc power supply output abnormality.
Carry in activation system in low-voltage dc power supply band of the present invention, described blood pressure lowering control unit includes the second detection
Subelement, for the output voltage of low-voltage dc power supply described in real-time detection, and is declined by rated voltage in described output voltage
To confirmation low-voltage dc power supply output abnormality during voltage preset value
Low-voltage dc power supply band of the present invention carry activation system in, described low-voltage dc power supply be vehicle power and
The rated operational voltage of this vehicle power is 27V, and described load is on-board air conditioner condensation fan, and described voltage preset value is specified
The 80% of voltage.
Low-voltage dc power supply band of the present invention carry activation system in, described boosting rectifier control unit with setting valve be
Beginning voltage simultaneously makes output voltage set-point increase linearly to rated voltage according to the soft-start time setting.
The present invention also provides a kind of low-voltage dc power supply band to carry startup method, and described low-voltage dc power supply is connected to load,
Described band carries startup method and comprises the following steps：
A () described low-voltage dc power supply, in output abnormality, output voltage set-point is adjusted to setting valve, described adjust
Value sets according to loading minimum running voltage；
When () described low-voltage dc power supply reaches Preset Time with setting valve output b, control output voltage set-point progressively
Increase to rated voltage.
Carry in startup method in low-voltage dc power supply band of the present invention, described step (a) includes：Described low-voltage direct
Power supply real-time detection output current, and low-voltage dc power supply output abnormality is confirmed when output current exceedes maximum set value.
Carry in startup method in low-voltage dc power supply band of the present invention, described step (a) includes：Described low-voltage direct
Power supply real-time detection output voltage, and low-voltage dc power supply is confirmed when output voltage drops to voltage preset value by rated voltage
Output abnormality.
Low-voltage dc power supply band of the present invention carry startup method in, described low-voltage dc power supply be vehicle power and
The rated operational voltage of this vehicle power is 27V, and described load is on-board air conditioner condensation fan, and described voltage preset value is specified
The 80% of voltage.
Carry in startup method in low-voltage dc power supply band of the present invention, in described step (b), described low-voltage DC
Source makes output voltage set-point increase linearly to rated voltage with setting valve as starting voltage and according to the soft-start time setting.
The low-voltage dc power supply band of the present invention carries activation system and method, by low-voltage dc power supply output abnormality time control
To realize the load of low-voltage dc power supply soft start, no matter whether load itself has soft start defencive function to output voltage processed
Realize soft start, and do not need to set up communication with load master control, the complexity of system can be reduced, improve system reliability.
Brief description
Fig. 1 is the schematic diagram that low-voltage dc power supply band of the present invention carries activation system embodiment.
Fig. 2 is the schematic diagram that low-voltage dc power supply band of the present invention carries the output of activation system mesolow DC source.
Fig. 3 is the schematic diagram that low-voltage dc power supply band of the present invention carries another low-voltage dc power supply output in activation system.
Fig. 4 is that low-voltage dc power supply band of the present invention carries the schematic flow sheet starting embodiment of the method.
Specific embodiment
In order that the objects, technical solutions and advantages of the present invention become more apparent, below in conjunction with drawings and Examples, right
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only in order to explain the present invention, and
It is not used in the restriction present invention.
As shown in figure 1, being the schematic diagram that low-voltage dc power supply band of the present invention carries activation system embodiment, above-mentioned low-voltage direct
The outfan of power supply is connected to load (this is supported on startup its output current of moment and is much larger than running current).The present embodiment
In low-voltage dc power supply band carry activation system and include blood pressure lowering control unit 11 and boosting rectifier control unit 12, above-mentioned blood pressure lowering controls single
Unit 11 and boosting rectifier control unit 12 can be integrated into low-voltage dc power supply 10, make this low-voltage dc power supply 10 have soft start in itself and bear
The function of carrying.Certainly, in actual applications, blood pressure lowering control unit 11 and boosting rectifier control unit 12 may be alternatively located at and be connected to low-pressure direct
The protection circuit of stream power supply 10, makes connected low-voltage dc power supply 10 have the function of soft start respective load.
Blood pressure lowering control unit 11 is used for, in low-voltage dc power supply 10 output abnormality, this low-voltage dc power supply 10 being exported electricity
Pressure set-point is adjusted to setting valve, and this setting valve can set according to loading minimum running voltage.For example above-mentioned setting valve is load
Minimum running voltage, thus can be so that the output current of low-voltage dc power supply 10 be rapid while not affecting load running
Reduce.
Boosting rectifier control unit 12 is for when low-voltage dc power supply 10 reaches Preset Time with setting valve output, (for example this is pre-
If the time can be 500 milliseconds, specifically can be according to the setting such as power of load), control the output voltage of low-voltage dc power supply 10
Set-point is stepped up rated voltage, so that load is normally run.In whole load start-up course, low-voltage dc power supply 10 defeated
Go out electric current, output voltage steadily controlled, load stabilization startup optimization.
Above-mentioned low-voltage dc power supply band carries activation system and passes through to control output in the output abnormality of low-voltage dc power supply 10
Voltage, so that the load of low-voltage dc power supply soft start, it is to avoid low-voltage dc power supply can not work because of factors such as overcurrent protections.
Especially, above-mentioned blood pressure lowering control unit 11 may include the first detection sub-unit, for real-time detection low-voltage DC
The output current in source 10 and when above-mentioned output current exceedes maximum set value confirm low-voltage dc power supply 10 output abnormality.From
And the output voltage of low-voltage dc power supply 10 can be adjusted to setting valve V2 by blood pressure lowering control unit 11 accordingly, make low-voltage dc power supply
10 actual output voltage reduces rapidly, thus the output current of low-voltage dc power supply reduces rapidly, as shown in Figure 2.
Additionally, blood pressure lowering control unit 11 also can judge by the second detection sub-unit that the output of low-voltage dc power supply 10 is
No exception.This second detection sub-unit is used for the output voltage of real-time detection low-voltage dc power supply 10, and in output voltage by volume
Determine voltage V1 and drop to the output abnormality confirming low-voltage dc power supply 10 during voltage preset value.
Above-mentioned low-voltage dc power supply band carries activation system and may be directly applied in vehicle power, and that is, low-voltage dc power supply is car
Carry power supply and the rated operational voltage of this vehicle power is 27V, correspondingly, load can be on-board air conditioner condensation fan, and second
Detection sub-unit record vehicle power by rated voltage reduce to rated voltage 80% when confirm low-voltage dc power supply output
Abnormal (vehicle power originally reaches in output current and can gradually reduce output voltage after maximum).
When carrying out boosting rectifier control, (output current of low-voltage dc power supply 10 is reduced to liter to above-mentioned boosting rectifier control unit 12
After pressure preset value), with setting valve as starting voltage and according to the soft-start time (time period shown in such as Fig. 2, Fig. 3 setting
In T2-T3) make the output voltage set-point of low-voltage dc power supply 10 increase linearly to rated voltage.
As shown in figure 4, being that low-voltage dc power supply band of the present invention carries the schematic diagram starting embodiment of the method, above-mentioned low-voltage direct
Power supply is connected to load (this is supported on startup its output current of moment and is much larger than running current), and the method specifically may include
Following steps：
Step S41：The output of real-time detection low-voltage dc power supply.
In this step, can real-time detection low-voltage dc power supply output current, also can real-time detection low-voltage dc power supply
Output voltage.
Step S42：Judge whether low-voltage dc power supply output is abnormal, and execute in the output abnormality of low-voltage dc power supply
Step S43, otherwise return to step S41.
When in step S41, detection parameter is the output current of low-voltage dc power supply, then exceed in output current in this step
Low-voltage dc power supply output abnormality is confirmed during maximum set value；When in step S41, detection parameter is the output of low-voltage dc power supply
Voltage, then confirm when output voltage drops to voltage preset value by rated voltage in this step that low-voltage dc power supply output is different
Often.
Step S43：The output voltage set-point of low-voltage dc power supply is adjusted to setting valve, this setting valve is according to load
Low-work voltage sets.So that the output current of low-voltage dc power supply reduces rapidly, it is to avoid low-voltage dc power supply is protected because of excessively stream
Protect and can not work.
Step S44：When low-voltage dc power supply reaches Preset Time with setting valve output, execution step S45, otherwise return
Step S43.
Step S45：The output voltage set-point controlling low-voltage dc power supply is stepped up rated voltage, thus completing to bear
Carry and start.Specifically, in this step, controllable low-voltage dc power supply is with setting valve as starting voltage and according to the soft start setting
Time makes output voltage set-point increase linearly to rated voltage.
Above-mentioned low-voltage dc power supply band carries startup method and may be used in the starting of air conditioner of commercial electric bus, i.e. low pressure
DC source is 27V for the rated operational voltage of vehicle power and this vehicle power, loads as on-board air conditioner condensation fan, step
Voltage preset value in S42 is the 80% of rated voltage.
The above, the only present invention preferably specific embodiment, but protection scope of the present invention is not limited thereto,
Any those familiar with the art the invention discloses technical scope in, the change or replacement that can readily occur in,
All should be included within the scope of the present invention.Therefore, protection scope of the present invention should be with scope of the claims
It is defined.
Claims (10)
1. a kind of low-voltage dc power supply band carries activation system, described low-voltage dc power supply be connected to load it is characterised in that：Described
Band carries activation system and includes blood pressure lowering control unit and boosting rectifier control unit, wherein：Described blood pressure lowering control unit, in low-pressure direct
During stream power supply output abnormality, output voltage set-point is adjusted to setting valve, described setting valve is according to the minimum running voltage of load
Set；Described boosting rectifier control unit, for when described low-voltage dc power supply reaches Preset Time with setting valve output, controlling institute
The output voltage set-point stating low-voltage dc power supply is stepped up rated voltage.
2. low-voltage dc power supply band according to claim 1 carry activation system it is characterised in that：Described blood pressure lowering control unit
Including the first detection sub-unit, the output current for low-voltage dc power supply described in real-time detection simultaneously exceedes in described output current
Low-voltage dc power supply output abnormality is confirmed during maximum set value.
3. low-voltage dc power supply band according to claim 1 carry activation system it is characterised in that：Described blood pressure lowering control unit
Including the second detection sub-unit, for the output voltage of low-voltage dc power supply described in real-time detection, and described output voltage by
Rated voltage drops to confirmation low-voltage dc power supply output abnormality during voltage preset value.
4. low-voltage dc power supply band according to claim 3 carry activation system it is characterised in that：Described low-voltage dc power supply
Rated operational voltage for vehicle power and this vehicle power is 27V, and described load is on-board air conditioner condensation fan, described voltage
Preset value is the 80% of rated voltage.
5. low-voltage dc power supply band according to claim 1 carry activation system it is characterised in that：Described boosting rectifier control unit
With setting valve as starting voltage and according to the soft-start time setting, output voltage set-point is made to increase linearly to rated voltage.
6. a kind of low-voltage dc power supply band carries startup method, described low-voltage dc power supply be connected to load it is characterised in that：Described
Band carries startup method and comprises the following steps：
A () described low-voltage dc power supply, in output abnormality, output voltage set-point is adjusted to setting valve, described setting valve root
Set according to loading minimum running voltage；
When () described low-voltage dc power supply reaches Preset Time with setting valve output b, output voltage set-point is controlled to be stepped up
To rated voltage.
7. low-voltage dc power supply band according to claim 6 carry startup method it is characterised in that：Described step (a) includes：
Described low-voltage dc power supply real-time detection output current, and low-voltage dc power supply is confirmed when output current exceedes maximum set value
Output abnormality.
8. low-voltage dc power supply band according to claim 6 carry startup method it is characterised in that：Described step (a) includes：
Described low-voltage dc power supply real-time detection output voltage, and confirm when output voltage drops to voltage preset value by rated voltage
Low-voltage dc power supply output abnormality.
9. low-voltage dc power supply band according to claim 8 carry startup method it is characterised in that：Described low-voltage dc power supply
Rated operational voltage for vehicle power and this vehicle power is 27V, and described load is on-board air conditioner condensation fan, described voltage
Preset value is the 80% of rated voltage.
10. low-voltage dc power supply band according to claim 6 carry startup method it is characterised in that：In described step (b),
Described low-voltage dc power supply, with setting valve as starting voltage and according to the soft-start time setting, makes output voltage set-point linear
Increase to rated voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610830136.4A CN106379132A (en) | 2016-09-18 | 2016-09-18 | On-load starting system and method for low-voltage direct current power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610830136.4A CN106379132A (en) | 2016-09-18 | 2016-09-18 | On-load starting system and method for low-voltage direct current power supply |
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| CN106379132A true CN106379132A (en) | 2017-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610830136.4A Pending CN106379132A (en) | 2016-09-18 | 2016-09-18 | On-load starting system and method for low-voltage direct current power supply |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110667334A (en) * | 2019-10-11 | 2020-01-10 | 广东美的制冷设备有限公司 | Vehicle-mounted air conditioner and low-power-consumption standby method and circuit thereof |
| CN111231606A (en) * | 2020-01-20 | 2020-06-05 | 广州华凌制冷设备有限公司 | Vehicle-mounted air conditioner, operation method, control device and computer-readable storage medium |
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| CN102158100A (en) * | 2011-03-01 | 2011-08-17 | 山东沃森电源设备有限公司 | Triphase variable-frequency power supply with high power and operating method thereof |
| CN102916627A (en) * | 2012-10-19 | 2013-02-06 | 中科恒源科技股份有限公司 | Variable frequency starting method and device and storage battery supply |
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| DE102011081706A1 (en) * | 2011-08-29 | 2013-02-28 | Robert Bosch Gmbh | Temperature control device for controlling temperature of passenger compartment of motor vehicle, particularly electric- or hybrid vehicle, has network arrangement with high-voltage power supply system for high-voltage load |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87213546U (en) * | 1987-09-15 | 1988-08-17 | 广西平果县科委 | Single-phase load limiting switch |
| CN102158100A (en) * | 2011-03-01 | 2011-08-17 | 山东沃森电源设备有限公司 | Triphase variable-frequency power supply with high power and operating method thereof |
| DE102011081706A1 (en) * | 2011-08-29 | 2013-02-28 | Robert Bosch Gmbh | Temperature control device for controlling temperature of passenger compartment of motor vehicle, particularly electric- or hybrid vehicle, has network arrangement with high-voltage power supply system for high-voltage load |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110667334A (en) * | 2019-10-11 | 2020-01-10 | 广东美的制冷设备有限公司 | Vehicle-mounted air conditioner and low-power-consumption standby method and circuit thereof |
| CN111231606A (en) * | 2020-01-20 | 2020-06-05 | 广州华凌制冷设备有限公司 | Vehicle-mounted air conditioner, operation method, control device and computer-readable storage medium |
| CN111231606B (en) * | 2020-01-20 | 2023-01-10 | 广州华凌制冷设备有限公司 | Vehicle-mounted air conditioner, operation method, control device and computer-readable storage medium |
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Application publication date: 20170208 |