CN204761137U - Alternating current -direct current manual -automatic gives on -vehicle refrigerator supply circuit - Google Patents
Alternating current -direct current manual -automatic gives on -vehicle refrigerator supply circuit Download PDFInfo
- Publication number
- CN204761137U CN204761137U CN201520424757.3U CN201520424757U CN204761137U CN 204761137 U CN204761137 U CN 204761137U CN 201520424757 U CN201520424757 U CN 201520424757U CN 204761137 U CN204761137 U CN 204761137U
- Authority
- CN
- China
- Prior art keywords
- branch road
- power supply
- direct current
- contact
- change over
- Prior art date
- 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.)
- Expired - Fee Related
Links
Landscapes
- Relay Circuits (AREA)
Abstract
The utility model relates to an alternating current -direct current manual -automatic supply circuit especially relates to an alternating current -direct current manual -automatic gives on -vehicle refrigerator supply circuit. Whole circuit includes that supply input branch road, on -vehicle DC power supply input branch road, automatic switch -over dc supply branch road, automatic switch -over direct current control branch road, automatic switch -over ac energisation branch road, automatic switch -over interchange control branch road, the manual dc supply branch road of change over switch, the manual ac energisation branch road of change over switch, the automatic branch road of supplying power of change over switch, switching power supply export the branch road. Utilize on -vehicle, mains supply, through switching power supply, realize that an alternating current -direct current manual -automatic gives on -vehicle DC12V refrigerator power supply mode, finally increased the multiple or automatic conversion mode of on -vehicle DC12V refrigerator, solved the power demand that the food transportation car used the refrigerator better, good reliability not only, convenient and practical moreover, low cost.
Description
Technical field
The utility model relates to a kind of alternating current-direct current auto-manual power supply circuits, particularly relates to a kind of alternating current-direct current auto-manual to car refrigerator power supply circuits.
Background technology
According to the applicant understood, have a kind of food-handling truck, car needs refrigerator is installed and be used for storage food, and refrigerator is now direct current DC12V powers.Usual direct current is called for short DC, and alternating current is called for short AC, existing customer demand, and refrigerator uses DC12V to power when driving, and uses civil power AC220V to power when parking.But refrigerator can not automatically switch, AC220V and DC12V powers.For this reason, a kind of alternating current-direct current auto-manual is developed to DC12V refrigerator power supply circuits.AC220V and DC12V that can automatically switch powers to refrigerator, is also provided with manual-operated emergent console switch, solves the power demands that food-handling truck uses refrigerator.
Summary of the invention
The purpose of this utility model is: for above-mentioned prior art Problems existing, improve the supply power mode of prior art, provides a kind of automatic, safe alternating current-direct current auto-manual to car refrigerator power supply circuits, good reliability, convenient and practical, with low cost.
In order to reach above object, a kind of alternating current-direct current hand of the present utility model to car refrigerator power supply circuits, comprises mains supply earth leakage circuit-breaker QF2 from a kind of alternating current-direct current auto-manual, vehicle-mounted electric current power bipolar air switch QF1, automatic switchover direct current supply controlling brancher fuse F1, automatic switchover direct current supply branch road fuse F2, automatic power supply circuit one pole air conservation switch QF3, direct current relay KA2, exchange transfer relay KA1, third gear change over switch SA, Switching Power Supply, DC12V refrigerator, mains supply, Vehicular direct-current power supply, described third gear change over switch SA is divided into the first gear, second gear, third gear, whole circuit comprises civil power input branch road, Vehicular direct-current power supply input branch road, automatic switchover direct current supply branch road, automatic switchover DC control branch road, automatic switchover Alternating Current Power Supply branch road, automatically switch and exchange controlling brancher, the manual direct current supply branch road of change over switch, the manual Alternating Current Power Supply branch road of change over switch, change over switch automatic power branch road, Switching Power Supply exports branch road, described civil power input branch road comprises mains supply, a mains supply earth leakage circuit-breaker QF2, described Vehicular direct-current power supply input branch road comprises Vehicular direct-current power supply, a vehicle-mounted electric current power bipolar air switch QF1, described Vehicular direct-current power input is inline fuse F1, direct current relay KA2 coil, interchange transfer relay KA1 normally-closed contact one group successively, composition automatic switchover DC control branch road, described Vehicular direct-current power input is inline fuse F2, direct current relay KA2 normally opened contact one group successively, composition automatic switchover direct current supply branch road, the manual direct current supply branch road of described change over switch SA comprises positive pole serial switch SA third gear contact 9 and 10 1 groups, contact, the manual Alternating Current Power Supply branch road of described change over switch comprises L line serial switch SA first gear contact 1 and 2 one groups, contact, N line serial switch SA first gear contact 3 and 4 one groups, contact, described change over switch automatic power branch road comprises L line series AC automatic power air switch and change over switch SA second gear contact 5 and 6 one groups, contact, N line serial switch SA second gear contact 7 and 8 one groups, contact, described automatic switchover Alternating Current Power Supply branch road comprises L line series AC transfer relay KA1 normally opened contact one group, described automatic switchover exchanges controlling brancher and comprises interchange transfer relay KA1 coil one in parallel, described Switching Power Supply output branch road comprises AC220V and turns DC12V Switching Power Supply one.
Further, the normally-closed contact that described Vehicular direct-current power supply inputs a branch circuit parallel connection automatic switchover direct current supply controlling brancher fuse F1, a direct current relay KA2 coil exchanges transfer relay KA1 with; The normally opened contact of described Vehicular direct-current power supply input branch road and automatic switchover direct current supply branch road fuse F2 and the direct current relay KA2 that connect between the manual direct current supply branch road of described change over switch.Fuse F1 and F2 effectively can protect DC circuit; Normally-closed contact direct current relay KA2 coils connected in series exchanging transfer relay KA1 can be prevented when change over switch SA is positioned at automatic transmission, electric main is powered to refrigerator together with Vehicular direct-current electricity, and direct current relay KA2 can power automatically to DC12V refrigerator by Vehicular direct-current electricity when change over switch SA automatic transmission.
Further, change over switch automatic power branch road in parallel on described civil power input branch road, on described change over switch automatic power branch road, in parallel automatic switchover exchanges controlling brancher interchange transfer relay KA1 coil, exchanges transfer relay KA1 normally opened contact at described change over switch automatic power branch road series connection automatic switchover Alternating Current Power Supply branch road.At this moment interchange transfer relay KA1 can when the automatic gear of change over switch SA, and electric main powers automatically to DC12V refrigerator.
Further, the manual direct current supply branch road of described change over switch, automatic switchover direct current supply branch road and Switching Power Supply export together with branch circuit parallel connection and power to DC12V refrigerator.
Further, described DC12V refrigerator has and carries the Switching Power Supply that AC220V turns DC12V.
Again further, described change over switch SA first gear is that manual electric main is powered gear, and second gear is automatic gear, and third gear is manual vehicle-mounted direct current supply gear; When described change over switch SA is positioned at automatic transmission, contact 5 and contact 6 lead to, change over switch automatic power branch road air switch exports L and connects interchange transfer relay KA1 normally opened contact upper end and KA1 coil upper end, when described change over switch SA is positioned at automatic transmission, contact 7 and contact 8 lead to, and civil power input branch road earth leakage protective device exports N and meets interchange transfer relay KA1 lower end and Switching Power Supply input N; Described change over switch SA be positioned at manual electric main power gear time, contact 1 and contact 2 lead to, civil power input branch road earth leakage protective device exports L and meets Switching Power Supply L, described change over switch SA be positioned at manual electric main power gear time, contact 3 and contact 4 lead to, and civil power input branch road earth leakage protective device exports N and meets Switching Power Supply N; When described change over switch SA is positioned at manual vehicle-mounted direct current supply gear, contact 9 and contact 10 lead to, and Vehicular direct-current power supply input branch road bipolar air switch output DC12V+ meets refrigerator DC12V+ and inputs.
Under normality, change over switch SA is automatic gear (the second gear), closed automatic power supply circuit one pole air conservation switch QF3, when there being vehicle-mounted DC12V to input, closed vehicle-mounted electric current power bipolar air switch QF1, direct current relay KA2 coil electricity, direct current relay KA2 normally opened contact closes, and exchanges transfer relay KA1 coil and is not energized, exchange transfer relay KA1 normally-closed contact to close, at this moment vehicle-mounted DC12V powers directly to refrigerator; When there being civil power to input; closed mains supply earth leakage circuit-breaker QF2; exchange transfer relay KA1 coil electricity; exchange transfer relay KA1 normally opened contact to close; exchange transfer relay KA1 normally-closed contact to disconnect; automatically switch into civil power, turn DC12V Switching Power Supply power to AC220V, Switching Power Supply exports DC12V and powers to refrigerator.When automatic switch-over circuit breaks down, (the one pole air conservation switch QF3 on change over switch automatic power branch road disconnects, the fuse F2 of automatic switchover DC control branch road disconnects, or the fuse F2 of automatic switchover direct current supply branch road disconnects) by change over switch, manual switchover Vehicular direct-current is powered or mains-supplied, Vehicular direct-current is powered needs closed Vehicular direct-current power bipolar air switch QF1, change over switch SA is gone to manual vehicle-mounted direct current supply gear (third gear), and Vehicular direct-current electricity can be powered to refrigerator; Mains-supplied needs closed civil power to input the mains supply earth leakage circuit-breaker QF2 of branch road; change over switch SA is gone to manual electric main to power gear (the first gear); can directly use civil power to power to Switching Power Supply, Switching Power Supply exports DC12V and powers to refrigerator.
The beneficial effects of the utility model: the utility model utilizes vehicle-mounted, mains supply, pass through Switching Power Supply, realize a kind of alternating current-direct current auto-manual to vehicle-mounted DC12V refrigerator powering mode, ultimately increase the multiple or automatic transformation mode of vehicle-mounted DC12V refrigerator, solve the power demands that food-handling truck uses refrigerator better, not only good reliability, and convenient and practical, with low cost; Meanwhile, be also provided with manual-operated emergent console switch, further increase car refrigerator in use safety guarantee.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is further described.
Fig. 1 is electrical block diagram of the present utility model.
Embodiment
To car refrigerator power supply circuits basic structure as shown in Figure 1, in diagram, direct current is called for short DC to a kind of alternating current-direct current auto-manual of the present embodiment, and alternating current is called for short AC, comprises mains supply earth leakage circuit-breaker QF2, vehicle-mounted electric current power bipolar air switch QF1, automatic switchover direct current supply controlling brancher fuse F1, automatic switchover direct current supply branch road fuse F2, automatic power supply circuit one pole air conservation switch QF3, direct current relay KA2, exchange transfer relay KA1, third gear change over switch SA, Switching Power Supply, DC12V refrigerator, mains supply, Vehicular direct-current power supply, third gear change over switch SA is divided into the first gear, second gear, third gear, whole circuit comprises civil power input branch road, Vehicular direct-current power supply input branch road, automatic switchover direct current supply branch road, automatic switchover DC control branch road, automatic switchover Alternating Current Power Supply branch road, automatically switch and exchange controlling brancher, the manual direct current supply branch road of change over switch, the manual Alternating Current Power Supply branch road of change over switch, change over switch automatic power branch road, Switching Power Supply exports branch road, civil power input branch road comprises mains supply, a mains supply earth leakage circuit-breaker QF2, Vehicular direct-current power supply input branch road comprises Vehicular direct-current power supply, a vehicle-mounted electric current power bipolar air switch QF1, Vehicular direct-current power input is inline fuse F1, direct current relay KA2 coil, interchange transfer relay KA1 normally-closed contact one group successively, composition automatic switchover DC control branch road, Vehicular direct-current power input is inline fuse F2, direct current relay KA2 normally opened contact one group successively, composition automatic switchover direct current supply branch road, the manual direct current supply branch road of change over switch SA comprises positive pole serial switch SA third gear contact 9 and 10 1 groups, contact, the manual Alternating Current Power Supply branch road of change over switch comprises L line serial switch SA first gear contact 1 and 2 one groups, contact, N line serial switch SA first gear contact 3 and 4 one groups, contact, change over switch automatic power branch road comprises L line series AC automatic power air switch and change over switch SA second gear contact 5 and 6 one groups, contact, N line serial switch SA second gear contact 7 and 8 one groups, contact, automatic switchover Alternating Current Power Supply branch road comprises L line series AC transfer relay KA1 normally opened contact one group, the interchange controlling brancher that automatically switches comprises interchange transfer relay KA1 coil one in parallel, Switching Power Supply output branch road comprises AC220V and turns DC12V Switching Power Supply one.
In implementing further, while possessing above-mentioned components and parts and branch road, require the normally-closed contact exchanging transfer relay KA1 at Vehicular direct-current power supply input branch circuit parallel connection automatic switchover direct current supply controlling brancher fuse F1, direct current relay KA2 coil with; The normally opened contact of the input of Vehicular direct-current power supply branch road and automatic switchover direct current supply branch road fuse F2 and the direct current relay KA2 that connect between the manual direct current supply branch road of change over switch.Fuse F1 and F2 effectively can protect DC circuit; Normally-closed contact direct current relay KA2 coils connected in series exchanging transfer relay KA1 can be prevented when change over switch SA is positioned at automatic transmission, electric main is powered to refrigerator together with Vehicular direct-current electricity, and direct current relay KA2 can power automatically to direct current DC12V refrigerator by Vehicular direct-current electricity when change over switch SA automatic transmission.
Requirement further, change over switch automatic power branch road in parallel on civil power input branch road, on described change over switch automatic power branch road, in parallel automatic switchover exchanges controlling brancher interchange transfer relay KA1 coil, and change over switch automatic power branch road series connection automatic switchover Alternating Current Power Supply branch road exchanges transfer relay KA1 normally opened contact; At this moment interchange transfer relay KA1 can when the automatic gear of change over switch SA, and electric main powers automatically to DC12V refrigerator.The manual direct current supply branch road of change over switch, automatic switchover direct current supply branch road and Switching Power Supply export together with branch circuit parallel connection and power to direct current DC12V refrigerator.DC12V refrigerator has and carries the Switching Power Supply that alternating current AC220V turns direct current DC12V.
In the present embodiment: change over switch SA is divided into three gears, the first gear is that manual electric main is powered gear, and the second gear is automatic gear, and third gear is manual vehicle-mounted direct current supply gear; Change over switch SA first grade of contact 1 and contact 2 lead to, and contact 3 and contact 4 lead to; Change over switch SA second gear contact 5 and contact 6 lead to, and contact 7 and contact 8 lead to; Change over switch SA third gear contact 9 and contact 10 lead to; Particularly, when change over switch SA is positioned at automatic transmission, contact 5 and contact 6 lead to, change over switch automatic power branch road air switch exports L and connects interchange transfer relay KA1 normally opened contact upper end and KA1 coil upper end, when change over switch SA is positioned at automatic transmission, contact 7 and contact 8 lead to, and civil power input branch road earth leakage protective device exports N and meets interchange transfer relay KA1 lower end and Switching Power Supply input N; Change over switch SA be positioned at manual electric main power gear time, contact 1 and contact 2 lead to, civil power input branch road earth leakage protective device exports L and meets Switching Power Supply L, change over switch SA be positioned at manual electric main power gear time, contact 3 and contact 4 lead to, and civil power input branch road earth leakage protective device exports N and meets Switching Power Supply N; When change over switch SA is positioned at manual vehicle-mounted direct current supply gear, contact 9 and contact 10 lead to, and Vehicular direct-current power supply input branch road bipolar air switch output DC12V+ meets refrigerator DC12V+ and inputs.
The utility model, just because of the connection possessing above-mentioned each appliance switch and each branch circuit had, makes alternating current-direct current auto-manual power to vehicle-mounted DC12V refrigerator and is achieved.Its specific works is as follows: change over switch SA is gone to automatic gear, need close automatic power supply circuit one pole air conservation switch QF3 in advance; Refrigerator is used in normal driving process, closed Vehicular direct-current power bipolar air switch QF1, direct current relay KA2 coil electricity, direct current relay KA2 normally opened contact closes, exchange transfer relay KA1 coil not to be energized, exchange transfer relay KA1 normally-closed contact to close, Vehicular direct-current power supply can be used to provide DC12V power supply to refrigerator; When parking; use civil power; closed mains supply earth leakage circuit-breaker QF2 after connecting civil power; now circuit can identify civil power automatically, exchanges transfer relay KA1 coil electricity, exchanges transfer relay KA1 normally opened contact and closes; exchange transfer relay KA1 normally-closed contact to disconnect; automatically switch to civil power, to the Switching Power Supply of refrigerator for AC220V power supply, Switching Power Supply exports DC12V and powers to refrigerator.
In order to ensure the power supply of DC12V refrigerator, after the circuit of automatic gear (the second gear) goes wrong, change over switch SA can be used manual, manual switchover Vehicular direct-current is powered or mains-supplied, Vehicular direct-current is powered needs closed Vehicular direct-current to power bipolar air switch QF1, change over switch SA is gone to manual vehicle-mounted direct current supply gear (third gear), and Vehicular direct-current DC12V can power to DC12V refrigerator; Mains-supplied needs closed civil power to input the earth leakage circuit-breaker QF2 of branch road, and change over switch SA is gone to manual electric main and to power gear (the first gear), can directly use civil power to power to Switching Power Supply, Switching Power Supply exports vehicle-mounted DC12V and powers to refrigerator.
Now ensure that alternating current-direct current auto-manual is powered to car refrigerator fully, can automatically select power supply to power to refrigerator when having Vehicular direct-current electricity and civil power, prioritizing selection civil power.And when automatic gear goes wrong, can manually select civil power or Vehicular direct-current electricity to power to vehicle-mounted DC12V refrigerator.
Power simultaneously to the vehicle-mounted DC12V refrigerator of alternating current-direct current at guarantee auto-manual, it is mainly reflected in safely 2 points:
1, civil power input branch road earth leakage circuit-breaker QF2 plays leakage protection while on-off circuit.Vehicular direct-current power supply input branch road Vehicular direct-current power bipolar air switch QF1 plays short-circuit protection or overcurrent protection while on-off circuit.Change over switch SA automatic power branch road automatic power supply circuit one pole air conservation switch QF3 plays short-circuit protection or overcurrent protection while on-off circuit.
2, install fuse additional at automatic switchover direct current supply branch road and overcurrent protection is carried out to circuit.Automatic switchover DC control branch road installs fuse additional and carries out overcurrent protection to circuit.
3, install change over switch additional, when conversion power supply circuits go wrong automatically, can change over switch SA manual operation be passed through, select supply power mode to power to car refrigerator, ensure that the power supply of car refrigerator.
By above each connected mode, realize automatic switchover AC220V and DC12V and power to vehicle-mounted DC12V refrigerator, solve the power demands that food-handling truck uses refrigerator.
In addition to the implementation, the utility model can also have other execution modes, and all employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection range of the utility model requirement.
Claims (6)
1. alternating current-direct current auto-manual is to car refrigerator power supply circuits, it is characterized in that:
Comprise mains supply earth leakage circuit-breaker QF2, vehicle-mounted electric current power bipolar air switch QF1, automatic switchover direct current supply controlling brancher fuse F1, automatic switchover direct current supply branch road fuse F2, automatic power supply circuit one pole air conservation switch QF3, direct current relay KA2, exchange transfer relay KA1, third gear change over switch SA, Switching Power Supply, DC12V refrigerator, mains supply, Vehicular direct-current power supply, described third gear change over switch SA is divided into the first gear, second gear, third gear, whole circuit comprises civil power input branch road, Vehicular direct-current power supply input branch road, automatic switchover direct current supply branch road, automatic switchover DC control branch road, automatic switchover Alternating Current Power Supply branch road, automatically switch and exchange controlling brancher, the manual direct current supply branch road of change over switch, the manual Alternating Current Power Supply branch road of change over switch, change over switch automatic power branch road, Switching Power Supply exports branch road,
Described civil power input branch road comprises mains supply, a mains supply earth leakage circuit-breaker QF2, described Vehicular direct-current power supply input branch road comprises Vehicular direct-current power supply, a vehicle-mounted electric current power bipolar air switch QF1, described Vehicular direct-current power input is inline fuse F1, direct current relay KA2 coil, interchange transfer relay KA1 normally-closed contact one group successively, composition automatic switchover DC control branch road; Described Vehicular direct-current power input is inline fuse F2, direct current relay KA2 normally opened contact one group successively, composition automatic switchover direct current supply branch road;
The manual direct current supply branch road of described change over switch SA comprises positive pole serial switch SA third gear contact 9 and 10 1 groups, contact; The manual Alternating Current Power Supply branch road of described change over switch comprises L line serial switch SA first gear contact 1 and 2 one groups, contact, N line serial switch SA first gear contact 3 and 4 one groups, contact; Described change over switch automatic power branch road comprises L line series AC automatic power air switch and change over switch SA second gear contact 5 and 6 one groups, contact, N line serial switch SA second gear contact 7 and 8 one groups, contact; Described automatic switchover Alternating Current Power Supply branch road comprises L line series AC transfer relay KA1 normally opened contact one group; Described automatic switchover exchanges controlling brancher and comprises interchange transfer relay KA1 coil one in parallel; Described Switching Power Supply output branch road comprises AC220V and turns DC12V Switching Power Supply one.
2. a kind of alternating current-direct current auto-manual, to car refrigerator power supply circuits, is characterized in that according to claim 1: a described Vehicular direct-current power supply input branch circuit parallel connection automatic switchover direct current supply controlling brancher fuse F1, a direct current relay KA2 coil exchange the normally-closed contact of transfer relay KA1 with one; The normally opened contact of described Vehicular direct-current power supply input branch road and automatic switchover direct current supply branch road fuse F2 and the direct current relay KA2 that connect between the manual direct current supply branch road of described change over switch.
3. according to claim 1 a kind of alternating current-direct current auto-manual to car refrigerator power supply circuits, it is characterized in that: change over switch automatic power branch road in parallel on described civil power input branch road, on described change over switch automatic power branch road, in parallel automatic switchover exchanges controlling brancher interchange transfer relay KA1 coil, exchanges transfer relay KA1 normally opened contact at described change over switch automatic power branch road series connection automatic switchover Alternating Current Power Supply branch road.
4. according to claim 1 a kind of alternating current-direct current auto-manual to car refrigerator power supply circuits, it is characterized in that: the manual direct current supply branch road of described change over switch, automatic switchover direct current supply branch road and Switching Power Supply export together with branch circuit parallel connection and power to DC12V refrigerator.
5. a kind of alternating current-direct current auto-manual, to car refrigerator power supply circuits, is characterized in that according to claim 1: described DC12V refrigerator has and carries the Switching Power Supply that AC220V turns DC12V.
6. according to claim 3 a kind of alternating current-direct current auto-manual to car refrigerator power supply circuits, it is characterized in that: described change over switch SA first gear is that manual electric main is powered gear, second gear is automatic gear, and third gear is manual vehicle-mounted direct current supply gear; When described change over switch SA is positioned at automatic transmission, contact 5 and contact 6 lead to, change over switch automatic power branch road air switch exports L and connects interchange transfer relay KA1 normally opened contact upper end and KA1 coil upper end, when described change over switch SA is positioned at automatic transmission, contact 7 and contact 8 lead to, and civil power input branch road earth leakage protective device exports N and meets interchange transfer relay KA1 lower end and Switching Power Supply input N; Described change over switch SA be positioned at manual electric main power gear time, contact 1 and contact 2 lead to, civil power input branch road earth leakage protective device exports L and meets Switching Power Supply L, described change over switch SA be positioned at manual electric main power gear time, contact 3 and contact 4 lead to, and civil power input branch road earth leakage protective device exports N and meets Switching Power Supply N; When described change over switch SA is positioned at manual vehicle-mounted direct current supply gear, contact 9 and contact 10 lead to, and Vehicular direct-current power supply input branch road bipolar air switch output DC12V+ meets refrigerator DC12V+ and inputs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520424757.3U CN204761137U (en) | 2015-06-18 | 2015-06-18 | Alternating current -direct current manual -automatic gives on -vehicle refrigerator supply circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520424757.3U CN204761137U (en) | 2015-06-18 | 2015-06-18 | Alternating current -direct current manual -automatic gives on -vehicle refrigerator supply circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204761137U true CN204761137U (en) | 2015-11-11 |
Family
ID=54475807
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520424757.3U Expired - Fee Related CN204761137U (en) | 2015-06-18 | 2015-06-18 | Alternating current -direct current manual -automatic gives on -vehicle refrigerator supply circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204761137U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106904092A (en) * | 2017-03-27 | 2017-06-30 | 江苏万帮德和新能源科技有限公司 | Charging pile and its charging method |
| CN113991826A (en) * | 2021-10-08 | 2022-01-28 | 珠海格力电器股份有限公司 | Power supply control system and method for refrigerating unit of refrigerator car and refrigerator car |
-
2015
- 2015-06-18 CN CN201520424757.3U patent/CN204761137U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106904092A (en) * | 2017-03-27 | 2017-06-30 | 江苏万帮德和新能源科技有限公司 | Charging pile and its charging method |
| CN113991826A (en) * | 2021-10-08 | 2022-01-28 | 珠海格力电器股份有限公司 | Power supply control system and method for refrigerating unit of refrigerator car and refrigerator car |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102343835B (en) | Method for realizing electric auto-passing neutral section of train by utilizing power electronic switching device | |
| CN112615381B (en) | Terminal low voltage of distributed low voltage distribution network administers device | |
| CN104882891A (en) | Low-voltage distribution voltage-regulation equipment | |
| CN103066569B (en) | Storage battery low-voltage protecting device and storage battery low-voltage protecting system | |
| CN201639354U (en) | Power supply switching circuit | |
| CN104110800A (en) | Air conditioner, and on-off control method and on-off control system for resistive load | |
| CN203399029U (en) | Dual-motor switching starting control device | |
| CN204761137U (en) | Alternating current -direct current manual -automatic gives on -vehicle refrigerator supply circuit | |
| CN209233475U (en) | A kind of low-voltage circuit pressure regulator | |
| CN201623528U (en) | Self-input and self-recovery programmable controller | |
| CN208273464U (en) | Converter station change of current cooler control system | |
| CN202694165U (en) | Automatic water tower controller | |
| CN202276189U (en) | Control power supply dual-channel power supplying device for high voltage inverter | |
| CN204651939U (en) | The quick shutdown unit of a kind of inverter | |
| CN203698170U (en) | Staggered power supply circuit with two vehicle-mounted air conditioners capable of automatic starting during electrifying | |
| CN204089648U (en) | Autotransformer reduced-voltage starting cabinet | |
| CN203826782U (en) | Shore power connection box | |
| CN208400023U (en) | A kind of no-spark voltage-stablizer using magnetic latching relay switching | |
| CN201504223U (en) | Multi-power energy-saving motor for oil pumping unit | |
| CN201541113U (en) | Controller capable of automatic electricity restriction | |
| CN218141124U (en) | Fill power supply system that electric pile peak load was put in place | |
| CN201063419Y (en) | Electric appliance energy-saving circuit of office building | |
| CN203722333U (en) | Oil-engine interlocking device and power supply unit comprising same | |
| CN205017240U (en) | Diesel generator control circuit that magnetizes | |
| CN214337142U (en) | Novel AC/DC low-voltage comprehensive distribution box |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20151111 Termination date: 20210618 |