CN206231188U - Electric automobile ptc heater double protecting device - Google Patents
Electric automobile ptc heater double protecting device Download PDFInfo
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- CN206231188U CN206231188U CN201621265874.0U CN201621265874U CN206231188U CN 206231188 U CN206231188 U CN 206231188U CN 201621265874 U CN201621265874 U CN 201621265874U CN 206231188 U CN206231188 U CN 206231188U
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- tds
- ptc
- detect switch
- temperature detect
- heater
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- Control Of Resistance Heating (AREA)
Abstract
The utility model is related to a kind of electric automobile ptc heater double protecting device, comprising following content：Comprising power module, control module and PTC heating modules, PTC heating modules include temperature detect switch (TDS) one, temperature detect switch (TDS) two and heater block, temperature detect switch (TDS) one, the parallel connection of temperature detect switch (TDS) two are in the loop, the temperature detect switch (TDS) one is serially connected between control module and power module by low-voltage control circuit one, the temperature detect switch (TDS) two-way is crossed low-voltage control circuit two and is serially connected between control module and ground, and heater block two ends are connected with two high-tension electricity sources of high pressure distribute module respectively.The utility model realizes the duplicate protection of ptc heater; two kinds of temperature detect switch (TDS) running parameters are set as stepped numerical value; exclude and cause vehicle part to deform the possibility of even generation fire because ptc heater is overheated; sound assurance vehicle and personal safety, it is ensured that PCT heater heating properties stability, security and reliability.
Description
Technical field
The utility model belongs to new-energy automobile control technology field, and more particularly to a kind of electric automobile ptc heater is double
Weight protection device, greatly improves ptc heater and causes the safety problems such as damage because of over-heating.
Background technology
In recent years, as the energy is increasingly in short supply, new energy is developed in raising and the maturation of science and technology that people are required natural environment
Source automobile turns into realizes energy-saving and emission-reduction, develops the important point of penetration of low-carbon economy, and electric automobile increasingly becomes focus.
Because electric automobile eliminates engine, therefore vehicle PTC heating systems completely newly are developed, to realize driver's cabin, occupant
Warm oneself and vehicle defrosting, the demand of demisting in cabin.Existing ptc heater is general to be opened using temperature control of being connected in low-voltage control circuit
Close, after temperature reaches preset temperature, temperature detect switch (TDS) normally-closed contact disconnects, then low tension loop disconnects, then High voltage output loop
The control model for disconnecting therewith；But this control model has a drawback, in the case of temperature detect switch (TDS) contact adhesion, can go out
Now cannot cutoff high phenomenon, cause ptc heater to work always, gently then damage ptc heater and vehicle part, it is heavy then can
Trigger self-burning of vehicle.Therefore, how to provide a kind of ptc heater control technology, and ensure ptc heater heating properties stabilization,
It is safe and reliable, as those skilled in the art's problem demanding prompt solution.
The content of the invention
In consideration of it, the utility model provides a kind of electric automobile ptc heater double protecting device, existing PTC is solved
Technical problem in heater control model, sound assurance vehicle and personal safety.
According to design provided by the utility model, a kind of electric automobile ptc heater double protecting device, bag
Containing power module, control module and PTC heating modules, PTC heating modules are connected by loop with control module signal, PTC
Heating module is connected by high pressure distribute module with power module, PTC heating modules comprising temperature detect switch (TDS) one, temperature detect switch (TDS) two and
Heater block, in the loop, the temperature detect switch (TDS) one passes through low-voltage control circuit a string for temperature detect switch (TDS) one, the parallel connection of temperature detect switch (TDS) two
It is connected between control module and power module, the temperature detect switch (TDS) two-way crosses low-voltage control circuit two and is serially connected in control module with ground
Between, heater block two ends are connected with two high-tension electricity sources of high pressure distribute module respectively.
Wherein, described high pressure distribute module comprising preliminary filling relay, the positive relay of master, main negative relay, PTC high pressures after
Electrical equipment, PTC high-voltage relay coils two ends connect 12V power supplys, temperature detect switch (TDS) one respectively.
Wherein, heater block one end is connected by main negative relay with power module, the other end by with PTC high-voltage relays
Device normally opened contact is connected, and PTC high-voltage relays normally-closed contact is connected by the positive relay of master with power module.
Preferably, the heater block is resistive heater.
The beneficial effects of the utility model：
Two temperature detect switch (TDS)s of the utility model by series connection in the loop, realize the duplicate protection of ptc heater, PTC
Two kinds of temperature detect switch (TDS) temperature running parameters of heater are set as holding stepped numerical value, eliminate and cause because ptc heater is overheated
Even there is the possibility of fire, sound assurance vehicle and personal safety in vehicle part deformation, it is ensured that PCT heaters are heated
Stability, security and reliability.
Brief description of the drawings：
Fig. 1 is schematic device of the present utility model；
Fig. 2 is workflow diagram of the present utility model；
Fig. 3 is embodiment principle schematic.
Specific embodiment：
The utility model is described in further detail with technical scheme below in conjunction with the accompanying drawings, and by preferred implementation
Example describes implementation method of the present utility model in detail, but implementation method of the present utility model is not limited to this.
Embodiment one, a kind of shown in Figure 1, electric automobile ptc heater double protecting device, comprising power module,
Control module and PTC heating modules, PTC heating modules are connected by loop with control module signal, and PTC heating modules pass through
High pressure distribute module is connected with power module, and PTC heating modules include temperature detect switch (TDS) one, temperature detect switch (TDS) two and heater block, temperature
In the loop, the temperature detect switch (TDS) one is serially connected in control mould to the control switch one, parallel connection of temperature detect switch (TDS) two by low-voltage control circuit one
Between block and power module, the temperature detect switch (TDS) two-way is crossed low-voltage control circuit two and is serially connected between control module and ground, heating
Part two ends are connected with two high-tension electricity sources of high pressure distribute module respectively, by series connection two temperature detect switch (TDS)s in the loop,
Realize the duplicate protection of ptc heater.
Embodiment two, shown in Figure 1, essentially identical with embodiment one, difference is：High pressure distribute module is included
Preliminary filling relay, the positive relay of master, main negative relay, PTC high-voltage relays, PTC high-voltage relay coils two ends meet 12V respectively
Power supply, temperature detect switch (TDS) one.
Wherein, heater block one end is connected by main negative relay with power module, the other end by with PTC high-voltage relays
Device normally opened contact is connected, and PTC high-voltage relays normally-closed contact is connected by the positive relay of master with power module.
Preferably, the heater block is resistive heater.
Shown in Figure 2, specific workflow is as follows：
First, the running parameter A of temperature detect switch (TDS) one, the running parameter B of temperature switch two are preset, running parameter A, B are set
It is stepped numerical value, wherein, running parameter A is closed comprising the parameter a disconnected for temperature detect switch (TDS) one and for temperature detect switch (TDS) one
Parameter a ', running parameter B comprising for temperature detect switch (TDS) two disconnect parameter b and for temperature detect switch (TDS) two closure parameter b '.
Rule of thumb and actual test, parameter a scopes may be configured as 85 ± 5 DEG C, and parameter a ' scopes may be configured as 60 ± 15
DEG C, parameter b scopes are 115 ± 5 DEG C, and parameter b ' scopes are 90 ± 15 DEG C.
Then, low tension loop conducting, the work of PTC heating modules；
Then, judge whether Current Temperatures reach running parameter A, if so, then temperature detect switch (TDS) one disconnects, PTC heating modules
It is stopped, and enters next step；Otherwise, PTC heating modules normal work, next step；
Finally, judge whether Current Temperatures reach running parameter B, if so, then temperature detect switch (TDS) two disconnects, the institute of temperature detect switch (TDS) one
Disconnected in loop, judge PTC heating module failure exceptions, control module is forced PTC heating modules to be stopped, PTC is heated
Module carries out trouble hunting；Otherwise, PTC heating module working conditions are kept.
By arrangement above, can be prevented effectively from because of ptc heater one caused by ptc heater temperature detect switch (TDS) contact adhesion
The situation of straight work, so that the service life of effective guarantee ptc heater and vehicle part, it is to avoid cause because of over-heating
The security incident such as self-burning of vehicle.
Further to verify validity of the present utility model, further solution is done to the utility model with reference to instantiation
Release explanation：
It is shown in Figure 3, including entire car controller VCU, high-voltaghe compartment PDU, ptc heater.
Described high-voltaghe compartment PDU inside includes preliminary filling relay, the positive relay of master, main negative relay, PTC high-voltage relays
Device.All of instruction to be realized by each actuating of relay in PDU it is electric with lower electricity on ptc heater, due to preliminary filling relay,
The positive relay of master, main negative relay are not that the utility model pays close attention to object, are not discussed herein.
A stitch, B stitch are Low level effective in described entire car controller VCU.When B stitch does not collect low level
When, by VCU inner control logics, A stitch is stopped output low level.
Described ptc heater inside includes two temperature detect switch (TDS)s：Temperature detect switch (TDS) 1, temperature detect switch (TDS) 2.Described temperature control is opened
Close 1 to be connected in low-voltage control circuit, one is terminating low-tension supply just, A stitch in another termination VCU（It is low effectively）, temperature detect switch (TDS) 1
Normally-closed contact is closed in 85 ± 5 DEG C of disconnections at 60 ± 15 DEG C；Described temperature detect switch (TDS) 2, the described entire car controller of a termination
B stitch in VCU, the other end is directly grounded（Bonding）, the normally-closed contact of temperature detect switch (TDS) 2 disconnects at 115 ± 5 DEG C, at 90 ± 15 DEG C
Closure.
One group of resistance wire R is also included inside described ptc heater, resistance wire R one end connects high pressure through PTC high-voltage relays
Just, another terminated high voltage master bears master.Under normal circumstances, after the place loop of temperature detect switch (TDS) 1 turns on, PTC high-voltage relay adhesives,
Through high-voltaghe compartment PDU export master just, master bear on ptc heater electricity, when temperature reaches 1 preset temperature of temperature detect switch (TDS), low pressure
Loop disconnects, and then electricity under high pressure.There is certain potential safety hazard in the process, be exactly the contact adhesion of temperature detect switch (TDS) 1 and nothing
The situation that method disconnects, now ptc heater work always, temperature can rise always, and when temperature, to rise to temperature detect switch (TDS) 2 default
During temperature, the contact of temperature detect switch (TDS) 2 disconnects, and B stitch does not collect low level in entire car controller VCU, is patrolled by VCU internal controls
Analysis is collected, A stitch stops output low level in making VCU, and at this moment the place loop of temperature detect switch (TDS) 1 disconnects, and then PTC high-voltage relays
Disconnect completing lower high pressure instruction.
After vehicle normally goes up high pressure, ptc heater power switch is pressed, returned where temperature detect switch (TDS) 1 in ptc heater
Road, i.e. low tension loop：+ 12V → 1 contact of temperature detect switch (TDS) → PTC high-voltage relays coil → VCU A stitch（Low level effective）.
After connection, PTC high-voltage relays tip side closure, then high tension loop is closed：Electrokinetic cell just → high pressure master just → PTC high pressures after
Appliance contact → ptc heater resistance wire R → high pressure master is negative → and electrokinetic cell bears.Now ptc heater normal work, works as temperature
When reaching 85 ± 5 DEG C, the normally-closed contact of temperature detect switch (TDS) 1 disconnects, and low tension loop disconnects, then PTC high-voltage relays contact disconnects, and then
High tension loop disconnects, and ptc heater is stopped.
In above process, entire car controller VCU B stitch is in bonding state, specially：VCU B stitch → temperature control is opened
Close 2 normally-closed contacts → GND；If in above-mentioned PTC heating processes, temperature detect switch (TDS) 1 cannot disconnect because of normally-closed contact adhesion,
PTC works always, and temperature rises always, and when temperature reaches 115 ± 5 DEG C, the normally-closed contact of temperature detect switch (TDS) 2 disconnects, full-vehicle control
B stitch does not collect low level in device VCU, is analyzed by VCU inner control logics, and A stitch stops the low electricity of output in making VCU
Flat, at this moment the place loop of temperature detect switch (TDS) 1 disconnects, and then PTC high-voltage relays disconnect completing lower high pressure instruction, ptc heater
It is stopped.Now, ptc heater failure can be investigated, repaired or is changed.
The utility model is not limited to above-mentioned specific embodiment, and those skilled in the art can also accordingly make various changes
Change, but any change equivalent or similar with the utility model should all be covered in the range of the utility model claim.
Claims (4)
1. a kind of electric automobile ptc heater double protecting device, comprising power module, control module and PTC heating modules,
PTC heating modules are connected by loop with control module signal, it is characterised in that：PTC heating modules pass through high pressure distribute module
It is connected with power module, PTC heating modules include temperature detect switch (TDS) one, temperature detect switch (TDS) two and heater block, temperature detect switch (TDS) one, temperature control
Switch two parallel connections in the loop, the temperature detect switch (TDS) one by low-voltage control circuit one be serially connected in control module and power module it
Between, the temperature detect switch (TDS) two-way is crossed low-voltage control circuit two and is serially connected between control module and ground, heater block two ends respectively with
The two high-tension electricity source connections of high pressure distribute module.
2. electric automobile ptc heater double protecting device according to claim 1, it is characterised in that：The high pressure point
Preliminary filling relay, the positive relay of master, main negative relay, PTC high-voltage relays, PTC high-voltage relays coil two are included with module
End connects 12V power supplys, temperature detect switch (TDS) one respectively.
3. electric automobile ptc heater double protecting device according to claim 2, it is characterised in that：Heater block one
End is connected by main negative relay with power module, and the other end is connected by with PTC high-voltage relay normally opened contacts, PTC high pressures
Relay normally-closed contact is connected by the positive relay of master with power module.
4. electric automobile ptc heater double protecting device according to claim 1, it is characterised in that：The heating part
Part is resistive heater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621265874.0U CN206231188U (en) | 2016-11-24 | 2016-11-24 | Electric automobile ptc heater double protecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621265874.0U CN206231188U (en) | 2016-11-24 | 2016-11-24 | Electric automobile ptc heater double protecting device |
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| Publication Number | Publication Date |
|---|---|
| CN206231188U true CN206231188U (en) | 2017-06-09 |
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ID=58979691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621265874.0U Active CN206231188U (en) | 2016-11-24 | 2016-11-24 | Electric automobile ptc heater double protecting device |
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| CN (1) | CN206231188U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106427475A (en) * | 2016-11-24 | 2017-02-22 | 郑州比克新能源汽车有限公司 | Device and method for double protection of PTC (Positive Temperature Coefficient) heater of electric vehicle |
| US20210408815A1 (en) * | 2020-06-29 | 2021-12-30 | Dongguan Poweramp Technology Limited | Electrochemical apparatus, electrical apparatus, electric vehicle, and power supply control method |
-
2016
- 2016-11-24 CN CN201621265874.0U patent/CN206231188U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106427475A (en) * | 2016-11-24 | 2017-02-22 | 郑州比克新能源汽车有限公司 | Device and method for double protection of PTC (Positive Temperature Coefficient) heater of electric vehicle |
| US20210408815A1 (en) * | 2020-06-29 | 2021-12-30 | Dongguan Poweramp Technology Limited | Electrochemical apparatus, electrical apparatus, electric vehicle, and power supply control method |
| US11996722B2 (en) * | 2020-06-29 | 2024-05-28 | Dongguan Poweramp Technology Limited | Electrochemical apparatus, electrical apparatus, electric vehicle, and power supply control method |
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