CN206410801U - A kind of cooled plate temperature protection circuit - Google Patents
A kind of cooled plate temperature protection circuit Download PDFInfo
- Publication number
- CN206410801U CN206410801U CN201621377283.2U CN201621377283U CN206410801U CN 206410801 U CN206410801 U CN 206410801U CN 201621377283 U CN201621377283 U CN 201621377283U CN 206410801 U CN206410801 U CN 206410801U
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- China
- Prior art keywords
- resistor
- resistance
- protection circuit
- cooled plate
- temperature protection
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Abstract
The utility model proposes a kind of cooled plate temperature protection circuit, including temperature test unit, comparing unit, control unit；The temperature test unit includes thermo-sensitive resistor, comparison resistance and multiple divider resistances；The comparing unit includes comparator, first resistor, triode, second resistance；Described control unit includes relay and 3rd resistor；The output end of the relay connects one end of 3rd resistor；The other end ground connection of the 3rd resistor.The IGBT module temperature sensed according to thermo-sensitive resistor, the open and close of energy automatic control cooling device, so that coordinating cooled plate to reach reduces the purpose of IGBT module temperature.
Description
Technical field
The utility model is related to technical field of circuit control, more particularly, to a kind of cooled plate temperature protection circuit.
Background technology
With the development of science and technology, traditional energy exhaustion situation is increasingly contained, new energy product gradually comes into our life,
Electric vehicle arises at the historic moment, and electric automobile is compared with orthodox car, with clean energy, the advantage of easy care；Its motor
Controller is the core of whole electric system；Therefore the stabilization of electric machine controller is the most important thing for whole electric automobile.
At present, the vehicle motor controller being known or used by, is radiated using water cooling form；Water cooling shape
Formula requires that IGBT (insulated gate bipolar transistor) module cooling segment has single cooling water channel in electric machine controller, and keeps
Certain pressure and flow are so that cooling is effective.But, in usual electric machine controller, the cooling water channel of IGBT module with it is vehicle-mounted its
His heating power part shared cooling system such as motor, power module, cold loop is longer, and cooling effect is bad, and such as
When cooling circuit leakage or not enough coolant occur for fruit, easily cause cooling system heat-sinking capability not enough, cause thermal accumlation,
The core component IGBT module of electric machine controller is caused to be damaged.
Therefore, for above-mentioned phenomenon, it is proposed that a kind of cooled plate temperature protection circuit, when cooled plate cooling circuit, it is impossible to
In time during cooling, it is adjusted by temperature protection circuit, protection IGBT module is reached with this, protects the core of electric machine controller
Part.
Utility model content
The purpose of this utility model is one of at least to solve the above problems.
In order to solve the above technical problems, the technical solution adopted in the utility model is：A kind of cooled plate temperature protection circuit,
Including temperature test unit, comparing unit, control unit；The temperature test unit includes thermo-sensitive resistor, comparison resistance and many
Individual divider resistance；The comparing unit includes comparator, first resistor, triode, second resistance；The thermo-sensitive resistor and first
Divider resistance connects the first input end and the second input of comparator respectively；The output end connection first resistor of the comparator
One end；The other end of the first resistor, the base stage of connecting triode；The colelctor electrode of the triode connects reference voltage；Institute
State one end and the input of relay of the emitter stage connection second resistance of triode；The other end ground connection of the second resistance；
Described control unit includes relay and 3rd resistor；The output end of the relay connects one end of 3rd resistor；Described
The other end ground connection of three resistance.
It is preferred that, the reference voltage is set to 5V.
It is preferred that, the model LM193DR of the comparator.
It is preferred that, it is 1.2K that the comparison resistance, which chooses resistance,.
It is preferred that, the thermo-sensitive resistor chooses model PT1000.
It is preferred that, parallel diode between the 3rd pin of relay and the 7th pin, to protective relay.
The utility model is had the advantage that with beneficial effect：A kind of cooled plate temperature protection electricity that the utility model is provided
Road, the IGBT module temperature sensed according to thermo-sensitive resistor, the open and close of energy automatic control cooling device, so as to coordinate water cooling
Plate reaches the purpose of reduction IGBT module temperature.
Brief description of the drawings
Of the present utility model above-mentioned and/or additional aspect and advantage will from description of the accompanying drawings below to embodiment is combined
Become substantially and be readily appreciated that, wherein：
A kind of circuit theory diagrams for cooled plate temperature protection circuit that Fig. 1 provides for the utility model embodiment；
Embodiment
Embodiment of the present utility model is described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning
Same or similar element or element with same or like function are represented to same or similar label eventually.Below by ginseng
The embodiment for examining accompanying drawing description is exemplary, it is intended to for explaining the utility model, and it is not intended that to the utility model
Limitation.
As shown in figure 1, a kind of cooled plate temperature protection circuit that the present embodiment is provided, including temperature test unit 1, compare
Unit 2, control unit 3；The temperature test unit 1 includes thermo-sensitive resistor R47, comparison resistance R46 and multiple divider resistances；Institute
State thermo-sensitive resistor R47 and divider resistance R41, R42, comparison resistance R46；R42 points of the thermo-sensitive resistor R47 and the first divider resistance
Not Lian Jie comparator first input end and the second input；The comparing unit includes comparator U23, first resistor R44, three
Pole pipe Q1, second resistance R48；The output end connection resistance R44 of comparator one end；The other end of the resistance R44, even
Connect triode Q1 base stage；The colelctor electrode of the triode Q1 connects 5v reference voltages；The emitter stage connection electricity of the triode Q1
Hinder R48 one end, and relay U22 input；The other end elder sister of the resistance R48；Described control unit includes relay
Device U22 and 3rd resistor R45；The output end connection resistance R45 of relay U22 one end；The other end of the resistance R45
Ground connection.
Design temperature protection circuit is in 50 degree of startups in the present embodiment, and it is 1.2K that the comparison resistance, which chooses resistance,.
Thermo-sensitive resistor is chosen in the present embodiment and chooses model PT1000, according to the temperature sensitive electricity of the size of power and comparison resistance
Resistance can also be from NTC types；Parallel diode D14 between relay U22 the 3rd pin and the 7th pin, to protect after
Electrical equipment.
The present embodiment repeat circuit U22 model JRC-89M, the 6th pin of relay and the 2nd pin connect cold respectively
But the high level and low level of device starting switch；8th pin connects one end of cooling device switch, and the 4th pin connects cooling device
The other end of switch, when relay does not work, the 6th pin and the 1st pin adhesive, the 2nd pin and the 5th pin adhesive；Work as IGBT
When the temperature of module is more than 50 degree, comparator U23 high level, triode Q1 is turned on, now the pins of relay U22 the 6th and the 8th pipe
Pin adhesive, the 2nd pin and the 4th pin adhesive；Now cooling device is opened, and auxiliary water cold drawing is cooled.
Cooling device described here completes the cooling work to IGBT module using the aids such as fan, auxiliary water cold drawing
Make.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means to combine specific features, structure, material or the spy that the embodiment or example are described
Point is contained at least one embodiment of the present utility model or example.In this manual, to the schematic table of above-mentioned term
State and be not necessarily referring to identical embodiment or example.Moreover, specific features, structure, material or the feature of description can be
Combined in an appropriate manner in any one or more embodiments or example.
Although embodiment of the present utility model has been shown and described above, it is to be understood that above-described embodiment is
Exemplary, it is impossible to it is interpreted as to limitation of the present utility model, one of ordinary skill in the art is not departing from the utility model
Principle and objective in the case of above-described embodiment can be changed in the range of the utility model, change, replace and
Modification.Scope of the present utility model is by appended claims and its equivalent limits.
Claims (6)
1. a kind of cooled plate temperature protection circuit, it is characterised in that：Including temperature test unit, comparing unit, control unit；Institute
Stating temperature test unit includes thermo-sensitive resistor, comparison resistance and multiple divider resistances；The comparing unit includes comparator, first
Resistance, triode, second resistance；The thermo-sensitive resistor and the first divider resistance connect the first input end and of comparator respectively
Two inputs；The output end of the comparator connects one end of first resistor；The other end of the first resistor, connecting triode
Base stage；The colelctor electrode of the triode connects reference voltage；The triode emitter stage connection second resistance one end and after
The input of electrical equipment；The other end ground connection of the second resistance；Described control unit includes relay and 3rd resistor；It is described after
The output end of electrical equipment connects one end of 3rd resistor；The other end ground connection of the 3rd resistor.
2. a kind of cooled plate temperature protection circuit according to claim 1, it is characterised in that：The reference voltage is set to
5V。
3. a kind of cooled plate temperature protection circuit according to claim 1, it is characterised in that：The model of the comparator
LM193DR。
4. a kind of cooled plate temperature protection circuit according to claim 1, it is characterised in that：The comparison resistance chooses resistance
It is worth for 1.2K.
5. a kind of cooled plate temperature protection circuit according to claim 1, it is characterised in that：The thermo-sensitive resistor selection type
Number be PT1000.
6. a kind of cooled plate temperature protection circuit according to claim 1, it is characterised in that：3rd pin of relay and
Parallel diode between 7th pin, to protective relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621377283.2U CN206410801U (en) | 2016-12-15 | 2016-12-15 | A kind of cooled plate temperature protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621377283.2U CN206410801U (en) | 2016-12-15 | 2016-12-15 | A kind of cooled plate temperature protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206410801U true CN206410801U (en) | 2017-08-15 |
Family
ID=59550724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621377283.2U Expired - Fee Related CN206410801U (en) | 2016-12-15 | 2016-12-15 | A kind of cooled plate temperature protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206410801U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110134055A (en) * | 2019-06-21 | 2019-08-16 | 厦门美图之家科技有限公司 | Self-shield heater circuit, beauty instrument, circuitry fault detection method and device |
-
2016
- 2016-12-15 CN CN201621377283.2U patent/CN206410801U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110134055A (en) * | 2019-06-21 | 2019-08-16 | 厦门美图之家科技有限公司 | Self-shield heater circuit, beauty instrument, circuitry fault detection method and device |
| CN110134055B (en) * | 2019-06-21 | 2020-11-10 | 厦门美图之家科技有限公司 | Self-protection heating circuit, beauty instrument, and line fault detection method and device |
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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 |
Granted publication date: 20170815 Termination date: 20191215 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |