CN206180569U - Thermal protection circuit of on -vehicle motor - Google Patents
Thermal protection circuit of on -vehicle motor Download PDFInfo
- Publication number
- CN206180569U CN206180569U CN201621237346.4U CN201621237346U CN206180569U CN 206180569 U CN206180569 U CN 206180569U CN 201621237346 U CN201621237346 U CN 201621237346U CN 206180569 U CN206180569 U CN 206180569U
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- vehicle
- circuit
- temperature
- thermal protector
- mounted motor
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Abstract
The utility model provides a thermal protection circuit of on -vehicle motor, include: establish ties first hot protector in the circuit of on -vehicle motor, establish ties the hot protector of second in the circuit of on -vehicle motor, wherein first hot protector is the hot protector of retrieval type, and the hot protector of second is the hot protector of fusing type. The temperature that triggers of the hot protector of second is higher than first hot protector. The utility model discloses a thermal protection circuit of on -vehicle motor still provides the fusing type hot protector outside the hot protector of retrieval type. The hot protector of fusing type can provide the fusing protection when the hot protector of retrieval type became invalid, cut off motor circuit, avoided the emergence of accident.
Description
Technical field
This utility model is related to technical field of automobile parts, more particularly, it relates to the thermal protection circuit of vehicle-mounted motor.
Background technology
With the raising of automotive automation degree, in the car can be using to various motors.Such as, with motorized adjustment work(
The seat of energy can use seat motor.Motor can be serially connected with thermal protection circuit as electric equipment, in its circuit to be come to motor
Thermal protection is carried out, the part of motor overheating and surrounding of igniting is prevented.
Fig. 1 discloses the thermal protection circuit of vehicle-mounted motor of the prior art.As illustrated, the thermal protection circuit includes string
The thermal protector 102 being coupled in the circuit of vehicle-mounted motor.In the illustrated embodiment, motor is shown in the circuit of vehicle-mounted motor
106 and inductance 108, it should be noted that also include other electronic devices and components in the circuit of actual vehicle-mounted motor, but in order to
Simple reason is stated, other electronic devices and components are being not illustrated here.The thermal protector 102 is usually that a temperature-sensitive is opened
Close, be it is a kind of can recovery-type thermal protector.Thermal protector 102 has triggering temperature t, in ambient temperature (i.e. Thermal protection
The temperature of device) not higher than triggering temperature t when, the contact of thermal protector is normally closed, and the circuit ON of vehicle-mounted motor, vehicle-mounted motor is normal
Work.When ambient temperature (i.e. the temperature of thermal protector) is higher than triggering temperature t, the contact of thermal protector disconnects, vehicle-mounted motor
Circuit be cut off, vehicle-mounted motor is out of service.After vehicle-mounted motor is out of service, temperature can be gradually reduced, when ambient temperature (i.e.
The temperature of thermal protector) fall back to again triggering temperature below when, the contact of thermal protector re-closes, the circuit of vehicle-mounted motor
It is turned back on, vehicle-mounted motor is restored to the state of normal work.
Bimetal plate heat protector is conventional thermoswitch, and one can be concatenated in the circuit of vehicle-mounted motor in prior art
Individual bimetal plate heat protector carries out Thermal protection.The operation principle of the thermal protector is illustrated by taking seat motor as an example：In seat electricity
During machine use, such as there is motor short time stall, or because running repeatedly under motor load, motor internal temperature liter can be caused
Height exceedes triggering temperature.Now there is bending in the bimetal leaf of bimetal plate heat protector, and contact disconnects and cuts off circuit.Motor
Temperature can be gradually reduced after quitting work, and when temperature is fallen back to below triggering temperature, bimetal leaf recovers original shape, contact
Again contact, circuit ON, motor recovers normal work.
Bimetal plate heat protector realizes being opened or closed for contact, therefore bimetal leaf by the deformation of bimetal leaf
The access times of thermal protector are limited.After the deformation of bimetal leaf reaches certain number of times, the deformation meeting of bimetal leaf
Failure, or the degree of deformation is insufficient for contact disconnection.Now, when motor overload occurs overheated, bimetal leaf heat
Protector can not in time cut off circuit.Many combustible materials can be arranged around vehicle-mounted motor, such as seat motor is arranged in
Near seat, and seat is made by combustible material.When the continuous rising of the temperature of motor reaches the burning-point of adjacent material, can draw
Combustion adjacent material and initiation fire, cause vehicle loss even personnel's injury.
Utility model content
The utility model proposes a kind of thermal protection circuit of vehicle-mounted motor, including：It is series in the circuit of vehicle-mounted motor
First thermal protector；The second thermal protector being series in the circuit of vehicle-mounted motor；Wherein the first thermal protector is can recovery-type
Thermal protector, the second thermal protector is fusing type thermal protector.
In one embodiment, the triggering temperature of the second thermal protector is higher than the first thermal protector.
In one embodiment, the first thermal protector is thermoswitch.The temperature of thermoswitch is higher than triggering temperature, temperature-sensitive
Switch off, the circuit of vehicle-mounted motor is cut off.The temperature of thermoswitch not higher than triggers temperature, and thermoswitch closure is vehicle-mounted
The circuit ON of motor.
In one embodiment, thermoswitch is bimetal leaf thermoswitch.
In one embodiment, the second thermal protector is fuse.The temperature of fuse is broken higher than triggering temperature, fuse
Open, the circuit of vehicle-mounted motor is cut off.The temperature of fuse not higher than triggers temperature, and fuse is remained up, vehicle-mounted motor
Circuit ON.
In one embodiment, burning-point of the triggering temperature of the second thermal protector less than vehicle-mounted motor adjacent material.
The thermal protection circuit of vehicle-mounted motor of the present utility model can additionally provide fusing type outside recovery-type thermal protector
Thermal protector.Fusing type thermal protector can provide fuse protection during the failure of recovery-type thermal protector, cut off motor circuit,
Avoid the generation of accident.
Description of the drawings
The above and other feature of this utility model, property and advantage will pass through with reference to the accompanying drawings and examples
Describe and become apparent, in the accompanying drawings identical reference represents all the time identical feature, wherein：
Fig. 1 discloses the circuit diagram of the thermal protection circuit of vehicle-mounted motor of the prior art.
Fig. 2 discloses the circuit diagram of the thermal protection circuit of the vehicle-mounted motor according to an embodiment of the present utility model.
Specific embodiment
With reference to shown in Fig. 2, Fig. 2 discloses the thermal protection circuit of the vehicle-mounted motor according to an embodiment of the present utility model
Circuit diagram.As illustrated, the thermal protection circuit of the vehicle-mounted motor includes：First be series in the circuit of vehicle-mounted motor is hot
Protector 102 and the second thermal protector 104 being series in the circuit of vehicle-mounted motor.Wherein the first thermal protector 102 is can be extensive
Replica thermal protector, the second thermal protector 104 is fusing type thermal protector.In the illustrated embodiment, the circuit of vehicle-mounted motor
In show motor 106 and inductance 108, it should be noted that also including other electronics in the circuit of actual vehicle-mounted motor
Components and parts, but in order to state simple reason, it is being not illustrated here other electronic devices and components.The He of first thermal protector 102
Second thermal protector 104 is all connected in the circuit of vehicle-mounted motor.
First thermal protector 102 is thermoswitch, and thermoswitch has triggering temperature t1.Temperature (or the ring of thermoswitch
Border temperature) higher than triggering temperature t1, thermoswitch disconnects, and the circuit of vehicle-mounted motor is cut off.Temperature (or the environment of thermoswitch
Temperature) not higher than trigger temperature t1, thermoswitch closure, the circuit ON of vehicle-mounted motor.In one embodiment, thermoswitch
It is bimetal leaf thermoswitch.First thermal protector 102 is consistent with thermal protector of the prior art, its operation principle also with it is existing
There is the thermal protector in technology identical.Again by taking seat motor as an example：During seat motor use, such as there is motor in short-term
Between stall, or because running repeatedly under motor load, motor internal temperature can be caused to increase to over triggering temperature.Now the first heat is protected
There is bending in the bimetal leaf of shield device 102 (such as bimetal plate heat protector), and contact disconnects and cuts off circuit.Motor stops work
Temperature can be gradually reduced after work, and when temperature is fallen back to below triggering temperature, bimetal leaf recovers original shape, and contact connects again
Touch, circuit ON, motor recovers normal work.
The second thermal protector 104 has also been concatenated in the thermal protection circuit of vehicle-mounted motor of the present utility model.Second Thermal protection
Device 104 is fuse.Second thermal protector 104 has triggering temperature t2.The temperature (or ambient temperature) of fuse is higher than triggering
Temperature t2, fuse disconnects, and the circuit of vehicle-mounted motor is cut off.The temperature (or ambient temperature) of fuse not higher than triggers temperature
T2, fuse is remained up, the circuit ON of vehicle-mounted motor.In one embodiment, triggering temperature t1 and t2 exist following
Relation：Triggering temperature t1 of triggering temperature t2 of the second thermal protector higher than the first thermal protector.Because the second thermal protector is
The fuse of irrecoverable type, needs to carry out special process to recover after fusing, and the first thermal protector is to recover
The thermal protector of type.In order that the second thermal protector does not affect the normal work of the first thermal protector, the second thermal protector
Triggering temperature t1 of triggering temperature t2 higher than the first thermal protector.Meanwhile, triggering temperature t2 of the second thermal protector is less than vehicle-mounted
The burning-point of motor adjacent material.So, if there is the situation of the first thermal protector failure, the material around ambient temperature rises to
Before the burning-point of material, the second thermal protector can be triggered and fuse and cut off circuit, it is ensured that temperature will not continue to rise, so as to avoid
There is the probability of the accidents such as fire.
The thermal protection circuit of vehicle-mounted motor of the present utility model can additionally provide fusing type outside recovery-type thermal protector
Thermal protector.Fusing type thermal protector can provide fuse protection during the failure of recovery-type thermal protector, cut off motor circuit,
Avoid the generation of accident.
Above-described embodiment is available to be familiar with person in the art to realize or using of the present utility model, be familiar with ability
The personnel in domain can in the case of without departing from utility model thought of the present utility model, above-described embodiment is made various modifications or
Change, thus protection domain of the present utility model is not limited by above-described embodiment, and should meet claims to mention
Inventive features maximum magnitude.
Claims (6)
1. a kind of thermal protection circuit of vehicle-mounted motor, it is characterised in that include：
The first thermal protector being series in the circuit of vehicle-mounted motor；
The second thermal protector being series in the circuit of vehicle-mounted motor；
Wherein the first thermal protector for can recovery-type thermal protector, the second thermal protector be fusing type thermal protector.
2. the thermal protection circuit of vehicle-mounted motor as claimed in claim 1, it is characterised in that the triggering of second thermal protector
Temperature is higher than the first thermal protector.
3. the thermal protection circuit of vehicle-mounted motor as claimed in claim 2, it is characterised in that
First thermal protector is thermoswitch；
The temperature of thermoswitch disconnects higher than triggering temperature, thermoswitch, and the circuit of vehicle-mounted motor is cut off；
The temperature of thermoswitch not higher than triggers temperature, thermoswitch closure, the circuit ON of vehicle-mounted motor.
4. the thermal protection circuit of vehicle-mounted motor as claimed in claim 3, it is characterised in that
The thermoswitch is bimetal leaf thermoswitch.
5. the thermal protection circuit of vehicle-mounted motor as claimed in claim 2, it is characterised in that
Second thermal protector is fuse；
The temperature of fuse disconnects higher than triggering temperature, fuse, and the circuit of vehicle-mounted motor is cut off；
The temperature of fuse not higher than triggers temperature, and fuse is remained up, the circuit ON of vehicle-mounted motor.
6. the thermal protection circuit of vehicle-mounted motor as claimed in claim 2, it is characterised in that the triggering of second thermal protector
Burning-point of the temperature less than vehicle-mounted motor adjacent material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621237346.4U CN206180569U (en) | 2016-11-18 | 2016-11-18 | Thermal protection circuit of on -vehicle motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621237346.4U CN206180569U (en) | 2016-11-18 | 2016-11-18 | Thermal protection circuit of on -vehicle motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206180569U true CN206180569U (en) | 2017-05-17 |
Family
ID=58685910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621237346.4U Active CN206180569U (en) | 2016-11-18 | 2016-11-18 | Thermal protection circuit of on -vehicle motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206180569U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107568965A (en) * | 2017-08-11 | 2018-01-12 | 东莞市皓奇企业管理服务有限公司 | The anti-application method for falling household sales counter of intelligence |
| CN108879604A (en) * | 2018-08-07 | 2018-11-23 | 赵云文 | Single-phase electrical appliance crosses heat overload protector |
| CN110277768A (en) * | 2018-03-16 | 2019-09-24 | C.&E.泛音有限公司 | Drilling equipment and for make drilling equipment run method |
-
2016
- 2016-11-18 CN CN201621237346.4U patent/CN206180569U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107568965A (en) * | 2017-08-11 | 2018-01-12 | 东莞市皓奇企业管理服务有限公司 | The anti-application method for falling household sales counter of intelligence |
| CN110277768A (en) * | 2018-03-16 | 2019-09-24 | C.&E.泛音有限公司 | Drilling equipment and for make drilling equipment run method |
| CN108879604A (en) * | 2018-08-07 | 2018-11-23 | 赵云文 | Single-phase electrical appliance crosses heat overload protector |
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