CN206416962U - Electric automobile air conditioner precharging circuit - Google Patents
Electric automobile air conditioner precharging circuit Download PDFInfo
- Publication number
- CN206416962U CN206416962U CN201720065029.7U CN201720065029U CN206416962U CN 206416962 U CN206416962 U CN 206416962U CN 201720065029 U CN201720065029 U CN 201720065029U CN 206416962 U CN206416962 U CN 206416962U
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- China
- Prior art keywords
- contactor
- preliminary filling
- contact
- connects
- resistance
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- Expired - Fee Related
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Abstract
The utility model provides a kind of electric automobile air conditioner precharging circuit, including：First contactor body, a first contactor contact, fuse, preliminary filling suppress resistance, preliminary filling filter capacitor, a time relay body, a relay contact, a second contactor body and a second contactor contact；The first end of fuse connects a second voltage input, the first end of the second end connection first contactor contact of fuse；Preliminary filling suppresses the second end of the first end connection first contactor contact of resistance；The first end connection preliminary filling of preliminary filling filter capacitor suppresses the second end of resistance；The first end of time relay body and the first end connection second voltage input of relay contact；The first end of second contactor body connects the second end of relay contact, and second contactor contact shunt suppresses the two ends of resistance in preliminary filling.A kind of electric automobile air conditioner precharging circuit of the present utility model, can complete the suppression function of preliminary filling electric current and supply voltage drop, safe.
Description
Technical field
The utility model is related to air-conditioning device field used for electric vehicle, more particularly to a kind of precharge of electric automobile air conditioner
Road.
Background technology
With the support of national policy and advancing by leaps and bounds for Development of Electric Vehicles, people to its electrical security also increasingly
It is increasingly subject to highly pay attention to, power supply of the vehicle high-voltage power supply (five in one is three-in-one) to air supply rate all employs low electricity
Stream, soon molten type fuse, because itself electric special characteristics of air supply rate must have DC/DC DC conversion powers, DC/AC
Frequency converter etc. carries the capacitive load of capacitor, and it has the temporary impact electricity of super large in vehicle high pressure powered on moment (in 50 μ s)
Flow (100-300A)；Therefore vehicle high pressure has been pre-charged with higher requirement to power-on of air conditioner, in order to reduce vehicle high voltage power distribution
The fusing frequency and air-conditioning of case air-conditioning fastp-acting fuse (50A/700Vfastcat) because of power failure and caused by can not normal work
Make the frequency, otherwise air-conditioning producer, which requires that vehicle is powered, uses slow fusing type 50A fuses to avoid moment impact current time, or
Extra preliminary filling loop must be increased and increase corresponding material cost (exchanging electric security for precharging circuit)；General feelings
Kuang Xia vehicles producer is all without the safe design theory of itself is changed, with the fieriness of market competition, air-conditioning used for electric vehicle
The safe operation of device and cost performance competition turn into the focus of market competition；So develop a kind of electric automobile air conditioner precharge
Road should be the task of top priority for solving current problem.
The content of the invention
For above-mentioned deficiency of the prior art, the utility model provides a kind of electric automobile air conditioner precharging circuit, can
The suppression function of preliminary filling electric current and supply voltage drop is completed in electric automobile air conditioner electrifying startup moment, it is safe.
To achieve these goals, the utility model provides a kind of electric automobile air conditioner precharging circuit, including：
One first D.C. contactor, first D.C. contactor includes a first contactor body and a first contactor
Contact, the first end of the first contactor body connects a first voltage input, the second of the first contactor body
End ground connection；
One fuse, the first end of the fuse connects a second voltage input, and the second end of the fuse connects
Connect the first end of the first contactor contact；
One preliminary filling suppresses resistance, and the first end that the preliminary filling suppresses resistance connects the second of the first contactor contact
End；
One preliminary filling filter capacitor, the first end of the preliminary filling filter capacitor connects the second end that the preliminary filling suppresses resistance,
Second end of the preliminary filling filter capacitor connects an overvoltage end；
One pre-charging time relay, the pre-charging time relay includes a time relay body and a relay is touched
Point, the first end of the time relay body and the first end of the relay contact connect the second voltage input,
The end of time relay body second ground connection；With
One second D.C. contactor, second D.C. contactor includes a second contactor body and a second contactor
Contact；The first end of the second contactor body connects the second end of the relay contact, the second contactor body
The second end ground connection, the second contactor contact shunt in the preliminary filling suppress resistance two ends.
Preferably, the two ends of the preliminary filling filter capacitor connect an output end respectively.
Preferably, first D.C. contactor, the fuse, the preliminary filling suppress resistance, the preliminary filling filtered electrical
Hold, the pre-charging time relay and the second D.C. contactor are integrated in a pcb board.
The utility model makes it have following beneficial effect as a result of above technical scheme：
Pre-charging time relay is used for the cut-out and conducting for controlling second contactor contact, and then controls cut-out preliminary filling to suppress
The best opportunity of resistance, pre-charging time is suppressed according to loading condition control.
Brief description of the drawings
Fig. 1 is the circuit diagram of the electric automobile air conditioner precharging circuit of the utility model embodiment.
Embodiment
Below according to accompanying drawing 1, preferred embodiment of the present utility model is provided, and is described in detail, is enabled more preferably geographical
Solve function of the present utility model, feature.
Referring to Fig. 1, a kind of electric automobile air conditioner precharging circuit of the utility model embodiment, including：It is integrated in a PCB
One first D.C. contactor of plate, fuse FU, preliminary filling suppress resistance R, preliminary filling filter capacitor C, pre-charging time relay and the
Two D.C. contactors.
Wherein, the first D.C. contactor includes an a first contactor body K1 and first contactor contact K1 ', and first connects
Tentaculum body K1 first end connects a first voltage input V1, first contactor body K1 the second end ground connection.Fuse
FU first end connects the of the second end connection first contactor contact K1 ' of second voltage an input V2, fuse FU
One end.Preliminary filling suppresses resistance R first end connection first contactor contact K1 ' the second end.Preliminary filling filter capacitor C first end
The second end that preliminary filling suppresses resistance R is connected, preliminary filling filter capacitor C the second end connects an overvoltage end OVDC.Pre-charging time after
Electrical equipment includes an a time relay body T and relay contact T ', the time relay body T first end and relay contact
T ' first end connection second voltage input V2, the second ends of time relay body T ground connection.Second D.C. contactor includes
An one second contactor body K2 and second contactor contact K2 '；Second contactor body K2 first end connection relay is touched
Point T ' the second end, second contactor body K2 the second end ground connection, second contactor contact K2 ' is parallel to preliminary filling and suppresses resistance
R two ends.Preliminary filling filter capacitor C two ends connect an output end respectively.
In the present embodiment, its preliminary filling suppresses resistance R nominal resistance, preliminary filling filter capacitor C nominal capacitys and pressure voltage, pre-
Matching can be given according to loading condition and adjust by filling the suppression time of the time relay, and its purpose is exactly in vehicle air conditioning high pressure
Electric moment ensures the steady and continuous that the security and air-conditioning of vehicle high-voltage power supply are powered.Pass through the upper electricity to electric automobile air conditioner
Operation and exiting during load, preliminary filling filter capacitor C cooperation operation etc. when instantaneous pressure loop preliminary filling suppresses resistance R zero load
Control reaches that power-on of air conditioner moment suppresses the dash current of super large and stablizes vehicle supply voltage, so as to realize electric automobile whole
The safe operation of high voltage power distribution circuit and the steady continued power of air-conditioning.The utility model enhance the electric security of vehicle,
The energy saving of air-conditioning products simultaneously can reduce power supply trouble rate.
The utility model is described in detail above in association with accompanying drawing embodiment, those skilled in the art can root
Many variations example is made to the utility model according to described above.Thus, some of embodiment details should not be constituted to this practicality
New restriction, the utility model regard the scope defined using appended claims as protection domain of the present utility model.
Claims (3)
1. a kind of electric automobile air conditioner precharging circuit, it is characterised in that including：
One first D.C. contactor, first D.C. contactor includes a first contactor body and a first contactor is touched
Point, the first end of the first contactor body connects a first voltage input, the second end of the first contactor body
Ground connection；
One fuse, the first end of the fuse connects a second voltage input, the second end connection institute of the fuse
State the first end of first contactor contact；
One preliminary filling suppresses resistance, and the preliminary filling suppresses the second end of the first end connection first contactor contact of resistance；
One preliminary filling filter capacitor, the first end of the preliminary filling filter capacitor connects the second end that the preliminary filling suppresses resistance, described
Second end of preliminary filling filter capacitor connects an overvoltage end；
One pre-charging time relay, the pre-charging time relay includes a time relay body and a relay contact, institute
State the first end of time relay body and the first end of the relay contact connects the second voltage input, when described
Between the end of relay body second be grounded；With
One second D.C. contactor, second D.C. contactor includes a second contactor body and a second contactor is touched
Point；The first end of the second contactor body connects the second end of the relay contact, the second contactor body
Second end is grounded, and the second contactor contact shunt suppresses the two ends of resistance in the preliminary filling.
2. electric automobile air conditioner precharging circuit according to claim 1, it is characterised in that the two of the preliminary filling filter capacitor
End connects an output end respectively.
3. electric automobile air conditioner precharging circuit according to claim 1 or 2, it is characterised in that the first direct current contact
Device, the fuse, the preliminary filling suppress resistance, the preliminary filling filter capacitor, the pre-charging time relay and the second direct current
Contactor is integrated in a pcb board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720065029.7U CN206416962U (en) | 2017-01-19 | 2017-01-19 | Electric automobile air conditioner precharging circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720065029.7U CN206416962U (en) | 2017-01-19 | 2017-01-19 | Electric automobile air conditioner precharging circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206416962U true CN206416962U (en) | 2017-08-18 |
Family
ID=59572058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720065029.7U Expired - Fee Related CN206416962U (en) | 2017-01-19 | 2017-01-19 | Electric automobile air conditioner precharging circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206416962U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113212096A (en) * | 2020-01-17 | 2021-08-06 | 比亚迪股份有限公司 | Power-on control method of vehicle air conditioner, vehicle and computer-readable storage medium |
-
2017
- 2017-01-19 CN CN201720065029.7U patent/CN206416962U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113212096A (en) * | 2020-01-17 | 2021-08-06 | 比亚迪股份有限公司 | Power-on control method of vehicle air conditioner, vehicle and computer-readable storage medium |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170818 Termination date: 20200119 |