CN203630552U - Household electrical appliance and load driving circuit thereof - Google Patents
Household electrical appliance and load driving circuit thereof Download PDFInfo
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- CN203630552U CN203630552U CN201320759390.1U CN201320759390U CN203630552U CN 203630552 U CN203630552 U CN 203630552U CN 201320759390 U CN201320759390 U CN 201320759390U CN 203630552 U CN203630552 U CN 203630552U
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- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004851 dishwashing Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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Abstract
The utility model is applied to the household electrical appliance field, and provides a household electrical appliance and a load driving circuit thereof. The load driving circuit of the household electrical appliance is used for driving a plurality of loads, the loads are divided into M sets, and each set at most has N loads. The load driving circuit of the household electrical appliance comprises a controller and a driving chip which are connected with each other, M first relays and N second relays, wherein the second end of a switch part of a first relay corresponds to a set of loads and is connected with the first ends of the set of loads, the second end of each load in each set corresponds to a second relay and is connected with the first end of a switch part of the second relay, and the second ends of the switch parts of the N second relays are connected with the second end of a power supply, thereby saving the number of the relays and I/O interfaces of the controller, reducing the production cost while reducing the area of a PCB. Moreover, two relays are needed to control each load, thereby improving the reliability.
Description
Technical field
The utility model intelligent appliance field, relates in particular to a kind of household electrical appliance load driving circuits.
Background technology
At present, traditional home appliance load control, as shown in Figure 1, with a single load of Control, need a MCU(Microprogrammed Control Unit for each relay, microprogram control unit) port controller, for the more household electrical appliances of load, need a lot of MCU ports, multiple relays, cause like this PCB(Printed circuit board, printed circuit board (PCB)) area increase, and virtually increasing manufacturing cost.And single relay goes wrong, relay is normally closed, makes load work always, may have risk on fire for high power device.
Utility model content
The utility model object is to provide a kind of household electrical appliance load driving circuits, many and can only corresponding control singlely cause the problem that cost is high, reliability is low to solve relay that traditional load driving circuits uses.
A kind of household electrical appliance load driving circuits that the utility model provides, be used for driving multiple loads, described load is divided into M group, every group of maximum N described loads, wherein M, N are more than or equal to 1 integer, and described household electrical appliance load driving circuits comprises interconnective controller and drives chip, and M the first relay and N the second relay, wherein
Described the first relay and described the second relay include switch sections and coiler part, the first end of the switch sections of described the first relay is connected in the first end of AC power, load being connected with the first end of all described loads of this group described in corresponding one group of the second end of the switch sections of described first relay; Corresponding described second relay of the second end of the each described load in each group, and be connected with the first end of the switch sections of this second relay, the second end of switch sections and second end of described power supply of described N the second relay are connected, and the coiler part of described M the first relay and described N the second relay is subject to respectively described driving chip drives.
Further, described load is 8 altogether, wherein, is divided into 4 groups, 2 every group; Or be divided into 2 groups, 4 every group; Or be divided into 3 groups, and wherein two groups comprise 3 described loads, other one group comprises 2 described loads.
Further, described load is 12 altogether, wherein, is divided into 4 groups, 3 every group; Or be divided into 3 groups, 4 every group; Or be divided into 6 groups, 2 every group; Or be divided into 2 groups, 6 every group.
Further, one end of the coiler part of described M the first relay and described N the second relay is connected with M+N driving pin of described driving chip respectively, the other end is connected with direct supply.
In addition, also provide a kind of household electrical appliance, comprised above-mentioned household electrical appliance load driving circuits.
Above-mentioned household electrical appliance load driving circuits uses the scheme of the load matrix control of M+N Control M*N, the in the situation that of M, N > 2, save the quantity of relay and the I/O mouth of controller, when reducing production costs, also reduced the area of pcb board; And each load to need two relays to control together just passable, so the control reliability of each load be improved, the corresponding minimizing of meeting of equivalent risk problem on fire.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of traditional load driving circuits;
The controller of load driving circuits and the schematic diagram of driving chip that Fig. 2 provides for the utility model embodiment;
The schematic diagram of the load driving circuits that Fig. 3 provides for the utility model one embodiment;
The schematic diagram of the load driving circuits that Fig. 4 provides for another embodiment of the utility model.
Embodiment
In order to make the technical problems to be solved in the utility model, technical scheme and beneficial effect clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
In conjunction with shown in Fig. 2 to 4, a kind of household electrical appliance load driving circuits, for driving multiple identical or not identical loads, is divided into M group by the plurality of load, every group of maximum N load, and wherein M, N are more than or equal to 1 integer.Household electrical appliance load driving circuits comprises interconnective controller IC 1 and drives chip IC 2, and M the first relay K 1 and N the second relay K 2.
From relay principle, the first relay K 1 and the second relay K 2 include switch sections and coiler part.The first end of the switch sections of the first relay K 1 is connected in the first end of AC power, and in the present embodiment, the first end of AC power is live wire L; And, the corresponding one group of load of the second end of the switch sections of first relay K 1, and be connected with the loaded first end of this group; Corresponding second relay K 2 of the second end of the each load in each group, and be connected with the first end of the switch sections of this second relay K 2, the second end of switch sections and second end of power supply of N the second relay K 2 are connected, and the coiler part of M the first relay K 1 and N the second relay K 2 is driven respectively chip IC 2 to drive.
In the present embodiment, the first end of AC power and the second end are respectively live wire L and zero line N; In other embodiments, can arrange on the contrary.
In a further embodiment, one end of the coiler part of M the first relay K 1 and N the second relay K 2 is connected with M+N the driving pin (with reference to the pin 1～7 of IC2 in figure 2) that drives chip IC 2 respectively, the other end is connected with direct supply+12V.
In one embodiment, with reference to figure 3, load is 8 (B1 altogether ... B8), wherein, be divided into 4 groups of (mono-group of load B1, B2; Mono-group of load B3, B4; Mono-group of load B5, B6; Mono-group of load B7, B8), every group 2, correspondingly, the first relay K 1 is 4, be respectively the corresponding load B1 of K1-1(, B2), the corresponding load B3 of K1-2(, B4), the corresponding load B5 of K1-3(, B6), the corresponding load B7 of K1-4(, B8), the second relay K 2 is 2, is respectively the corresponding load B1 of K2-1(, B3, B5, B7), the corresponding load B2 of K2-2(, B4, B6, B8); In other embodiments, 8 load (B1 ... B8) be divided into 2 groups, 4 every group, so correspondingly, the first relay K 1 is 2, and the second relay K 2 is 4; Or be divided into 3 groups, and wherein two groups comprise 3 loads, and other one group comprises 2 loads, and so correspondingly, the first relay K 1 is 3, and the second relay K 2 is 3.
In another embodiment, with reference to figure 4, load is 12 (B1 altogether ... B12), wherein, be divided into 4 groups of (mono-group of load B1, B2, B3; Mono-group of load B4, B5, B6; Mono-group of load B7, B8, B9; Mono-group of load B10, B11, B12), every group 3, correspondingly, the first relay K 1 is 4, be respectively the corresponding load B1 of K1-1(, B2, B3), the corresponding load B4 of K1-2(, B5, B6), the corresponding load B7 of K1-3(, B8, B9), the corresponding load B10 of K1-4(, B11, B12), the second relay K 2 is 3, is respectively the corresponding load B1 of K2-1(, B4, B5, B10), the corresponding load B1 of K2-2(, B5, B8, B11), the corresponding load B3 of K2-3(, B6, B9, B12); In other embodiments, 12 load (B1 ... B12) be divided into 3 groups, 4 every group, so correspondingly, the first relay K 1 is 3, and the second relay K 2 is 4; Or be divided into 6 groups, 2 every group; Or be divided into 2 groups, and 6 every group, so correspondingly, the first relay K 1 is 6, the second relay K 2 is 2.
With a load explanation circuit theory, with reference to figure 2 and 3, the zero line N of load B1, live wire L respectively control with a relay (K1-1 and K2-1), by zero line N, the live wire L of control load B1, realize the control to load B1 state below.In the time that needs load B1 works, controller IC 1 drives the driving chip IC 2 of relay by I/O mouth, drive chip IC 2 to make the first relay K 1-1 adhesive, the live wire L of load B1 connects, controller IC 1 drives the driving chip IC 2 of relay by I/O mouth, drive chip IC 2 to make the second relay K 2-1 adhesive, and the zero line N of load B1 connects, two ends have the AC power (as 220 voltages) of need of work, start working; Otherwise need to not work time, MCU drives the driving chip IC 2 of relay by I/O mouth, drive chip IC 2 that relay the first relay K 1-1 and/or the second relay K 2-1 are disconnected, the one end of only having of load B1 is connected, and there is no live wire or zero line or all disconnects.Like this as long as the port of 6 relays, 6 controller ICs 1 can be controlled 8 load (B1 successively ... B8).
In addition, also disclose a kind of household electrical appliance that comprise above-mentioned household electrical appliance load driving circuits, these household electrical appliance can be air-conditioning, refrigerator, washing machine, dish-washing machine etc.
Household electrical appliance load driving circuits uses the scheme of the load matrix control of M+N Control M*N, the in the situation that of M, N > 2, save the quantity of relay and the I/O mouth of controller, when reducing production costs, also reduced the area of pcb board; And each load to need two relays to control together just passable, so the control reliability of each load be improved, the corresponding minimizing of meeting of equivalent risk problem on fire.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (5)
1. a household electrical appliance load driving circuits, be used for driving multiple loads, it is characterized in that, described load is divided into M group, every group of maximum N described loads, and wherein M, N are more than or equal to 1 integer, described household electrical appliance load driving circuits comprises interconnective controller and drives chip, and M the first relay and N the second relay, wherein
Described the first relay and described the second relay include switch sections and coiler part, the first end of the switch sections of described the first relay is connected in the first end of AC power, load being connected with the first end of all described loads of this group described in corresponding one group of the second end of the switch sections of described first relay; Corresponding described second relay of the second end of the each described load in each group, and be connected with the first end of the switch sections of this second relay, the second end of switch sections and second end of described power supply of described N the second relay are connected, and the coiler part of described M the first relay and described N the second relay is subject to respectively described driving chip drives.
2. household electrical appliance load driving circuits as claimed in claim 1, is characterized in that, described load is 8 altogether, wherein, is divided into 4 groups, 2 every group; Or be divided into 2 groups, 4 every group; Or be divided into 3 groups, and wherein two groups comprise 3 described loads, other one group comprises 2 described loads.
3. household electrical appliance load driving circuits as claimed in claim 1, is characterized in that, described load is 12 altogether, wherein, is divided into 4 groups, 3 every group; Or be divided into 3 groups, 4 every group; Or be divided into 6 groups, 2 every group; Or be divided into 2 groups, 6 every group.
4. the household electrical appliance load driving circuits as described in claims 1 to 3 any one, it is characterized in that, one end of the coiler part of described M the first relay and described N the second relay is connected with M+N driving pin of described driving chip respectively, the other end is connected with direct supply.
5. household electrical appliance, is characterized in that, comprise the household electrical appliance load driving circuits described in claim 1 to 4 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320759390.1U CN203630552U (en) | 2013-11-26 | 2013-11-26 | Household electrical appliance and load driving circuit thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320759390.1U CN203630552U (en) | 2013-11-26 | 2013-11-26 | Household electrical appliance and load driving circuit thereof |
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| Publication Number | Publication Date |
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| CN203630552U true CN203630552U (en) | 2014-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320759390.1U Expired - Lifetime CN203630552U (en) | 2013-11-26 | 2013-11-26 | Household electrical appliance and load driving circuit thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104678783A (en) * | 2013-11-26 | 2015-06-03 | 美的集团股份有限公司 | Domestic appliance and load drive circuit thereof |
| CN109947034A (en) * | 2019-04-28 | 2019-06-28 | 廖金群 | A kind of power supply line with control panel and the household electrical appliance comprising the power supply line |
| CN112015093A (en) * | 2019-05-31 | 2020-12-01 | 广东美的制冷设备有限公司 | Drive control method, device, household appliance and computer readable storage medium |
-
2013
- 2013-11-26 CN CN201320759390.1U patent/CN203630552U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104678783A (en) * | 2013-11-26 | 2015-06-03 | 美的集团股份有限公司 | Domestic appliance and load drive circuit thereof |
| CN104678783B (en) * | 2013-11-26 | 2017-08-25 | 美的集团股份有限公司 | Household electrical appliance and its load driving circuits |
| CN109947034A (en) * | 2019-04-28 | 2019-06-28 | 廖金群 | A kind of power supply line with control panel and the household electrical appliance comprising the power supply line |
| CN112015093A (en) * | 2019-05-31 | 2020-12-01 | 广东美的制冷设备有限公司 | Drive control method, device, household appliance and computer readable storage medium |
| CN112015093B (en) * | 2019-05-31 | 2022-02-11 | 广东美的制冷设备有限公司 | Drive control method, device, household appliance and computer readable storage medium |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220907 Address after: 241000 west side of 3 / F, No.5 office building, new energy and new materials gathering area, Fuzhou Road, Jiangbei District, Wuhu City, Anhui Province Patentee after: Wuhu Midea intelligent kitchen electricity Manufacturing Co.,Ltd. Address before: 528311, 26-28, B District, Mei headquarters building, 6 Mei Road, Beijiao Town, Shunde District, Foshan, Guangdong. Patentee before: MIDEA GROUP Co.,Ltd. Patentee before: FOSHAN SHUNDE MIDEA WASHING APPLIANCES MANUFACTURING Co.,Ltd. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140604 |