CN1571231A - Excess temperature protector for driving motor of electric automobile - Google Patents
Excess temperature protector for driving motor of electric automobile Download PDFInfo
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- CN1571231A CN1571231A CN 200410037837 CN200410037837A CN1571231A CN 1571231 A CN1571231 A CN 1571231A CN 200410037837 CN200410037837 CN 200410037837 CN 200410037837 A CN200410037837 A CN 200410037837A CN 1571231 A CN1571231 A CN 1571231A
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- binding post
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- overcurrent
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Abstract
The invention is an electric auto driving motor cooling fun protector, according to the working current range, determining if the cooling fan works normally: if it is abnormal, send trouble information to an motor controller, which can stop the driving motor working or reduce output power of the driving motor, thus preventing overtemperature damage, even destruction to the driving motor caused by the abnormal working of the cooling fan, and the invention can be used not only in protecting electric auto driving motor but also in protecting other driving motors in need of cooling fans.
Description
Technical field
The present invention relates to the anti-overheat protector device of a kind of driving motor for electric automobile, the anti-overheat protector device of especially outer air-cooled driving motor for electric automobile.
Background technology
The type of cooling of air-cooled driving motor for electric automobile has two kinds of forms; a kind of is from air cooling way; the cooling fan of this air cooling way is installed in the rotating shaft of drive motors; the fan blade of fan rotates along with the drive motors rotor rotation; rotating speed is identical with the rotor rotating speed; another kind is outer air-cooled mode; the cooling fan of this mode is generally rotated by 24V on the car or the power supply of 12V Dc low voltage power supply; overcome from air cooling way cooling fan bad shortcoming of cooling effect during at drive motors low speed; thereby be widely adopted; overheat protector at outer air-cooled driving motor for electric automobile; what current technology mainly adopted is the motor temperature detection mode; promptly detect the temperature signal that is installed in the temperature sensor on the drive motors; when temperature signal is too high; electric machine controller makes drive motors out of service; realize the overheat protector of drive motors; what for example the drive motors that provides of the Zhuzhou Time Incorporation 15 electric automobile projects of giving and control system thereof adopted is exactly this motor overheat protector mode; this drive motors overheat protector has serious weak point; be installed in temperature sensor on the drive motors and can only detect on the motor stator temperature on certain or certain several temperature spots; the temperature spot that detects is limited; temperature on the rotor also is difficult to detect, therefore can not protects the local excess temperature of motor.
Summary of the invention
Purpose of the present invention is exactly will be at the deficiency of above-mentioned outer air-cooled driving motor for electric automobile overheat protector; design the anti-overheat protector device of a kind of novel outer air-cooled driving motor for electric automobile; this protector can not only detect temperature signal on the driving motor for electric automobile to realize the overheat protector to motor; the more important thing is and effectively to judge whether operate as normal of drive motors cooling fan; when cooling fan work is undesired; drive motors is realized protection, and the prevention drive motors produces excess temperature because of the cooling fan job failure.
For achieving the above object; driving motor for electric automobile involved in the present invention is prevented overheat protector device (hereinafter to be referred as protector); by the protector interior circuit board; protector outer casing; connecting terminal block three parts constitute; its core is the protector interior circuit board; connecting terminal block is installed on the protector outer casing; be used for lead-in wire usefulness between the outer electric parts of protector interior circuit board and protector; protector interior circuit board circuit is by the DC/DC converter; Hall current sensor; sensor matching resistance; the undercurrent comparator; the overcurrent comparator; comparator output resistance R1; undercurrent reference resistance R2; undercurrent reference resistance R3; overcurrent reference resistance R4; overcurrent reference resistance R5; triode; relay; the relay continued flow tube; the cooling fan continued flow tube constitutes; connecting terminal block is by binding post 1; binding post 2; binding post 3; binding post 4; binding post 5; binding post 6; binding post 7 constitutes; low-voltage dc power supply positive pole on the electric automobile is connected to the positive input terminal of DC/DC converter by binding post 1; and the current detecting through wires hole of process Hall current sensor is behind binding post 2; receive the positive source (power cathode of fan is received on the low-voltage dc power supply negative pole on the electric automobile) of the outer drive motors cooling fan of protector; low-voltage dc power supply negative pole on the electric automobile is connected to the negative input end of DC/DC converter by binding post 3; the negative electrode of cooling fan continued flow tube is connected to binding post 2; anode is connected to binding post 3; DC/DC converter+15V output and Hall current sensor+15V power input; the end of undercurrent reference resistance R2; the end of overcurrent reference resistance R4 and undercurrent comparator+15V power input or overcurrent comparator+the 15V power input is connected; the other end of undercurrent reference resistance R2 is connected with the end of undercurrent reference resistance R3 and the negative input end of undercurrent comparator; the other end of overcurrent reference resistance R4 is connected with the end of overcurrent reference resistance R5 and the positive input terminal of overcurrent comparator; the other end of the other end of undercurrent reference resistance R3 and overcurrent reference resistance R5; one end of sensor matching resistance; the emitter of triode; the output ground of DC/DC converter is connected with binding post 5; the other end of sensor matching resistance and the output of Hall current sensor; the positive input terminal of undercurrent comparator is connected with the negative input end of overcurrent comparator; DC/DC converter-15V output and Hall current sensor-15V power input and undercurrent comparator-15V power input or overcurrent comparator-the 15V power input is connected; the DC/DC converter+the line Zhang Yiduan of 5V output and relay; one end of the negative electrode of relay continued flow tube and sensor matching resistance is connected; the coil other end of relay is connected with the collector electrode of the anode of relay continued flow tube and triode; the output of the other end of sensor matching resistance and undercurrent comparator; the output of overcurrent comparator; the base stage of triode is connected with binding post 4; one end of relay normally open contact is connected to binding post 6; the other end is connected to binding post 7; Hall current sensor is according to the size of driving motor for electric automobile cooling fan operating current; on sensor matching resistance, produce the voltage signal that is directly proportional with this current value; and deliver to the positive input terminal of undercurrent comparator and the negative input end of overcurrent comparator; DC/DC converter output+15V voltage delivers to the negative input end of undercurrent comparator as undercurrent benchmark voltage by undercurrent reference resistance R2 and undercurrent reference resistance R3 dividing potential drop; deliver to the positive input terminal of overcurrent comparator as overcurrent benchmark voltage by overcurrent reference resistance R4 and overcurrent reference resistance R5 dividing potential drop; the undercurrent reference voltage value can be selected by the value of choosing different undercurrent reference resistance R2 and undercurrent reference resistance R3; same overcurrent reference voltage value can be selected by the value of choosing different overcurrent reference resistance R4 and overcurrent reference resistance R5; when the ohmically magnitude of voltage of sensor matching is within overcurrent reference voltage and undercurrent reference voltage range; undercurrent comparator or overcurrent comparator output high level; make the triode saturation conduction; the relay coil energising; the closing of contact of relay; and when the ohmically magnitude of voltage of sensor matching is lower than the undercurrent reference voltage or is higher than the overcurrent reference voltage; undercurrent comparator or overcurrent comparator output low level; triode ends; relay coil does not have electric current; relay contact is disconnected; relay contact disconnects alarm signal and offers the outer drive motor controller of protector by binding post 6 and binding post 7; drive motor controller stops the drive motors operation after receiving the relay contact cut-off signal; when the operating current that is to say the drive motors cooling fan exceeds its running current higher limit or is lower than its running current lower limit; be that cooling fan work is when undesired; protector sends the protection alarm signal to drive motor controller; after electric machine controller is received this signal; stop drive motors work; to prevent that drive motors from causing the drive motors excess temperature to damage owing to the cooling channel effect is bad; protector can also receive protectors by binding post 4 and binding post 5 and be installed in thermal relay switching signal on the drive motors outward; when the drive motors excess temperature makes thermal relay by often starting when accomplishing closure; relay relay contact in the protector disconnects; send drive motors excess temperature signal to drive motor controller; after drive motor controller is received this signal; also can stop the drive motors operation, realize the overheat protector of drive motors.
Owing to adopted technique scheme; driving motor for electric automobile involved in the present invention is prevented the overheat protector device; use Hall current sensor to detect the method for driving motor for electric automobile cooling fan electric current; when guaranteeing that the cooling fan operating current surpasses higher limit or is lower than lower limit; when being the cooling fan operation irregularity; protector sends alarm signal to electric machine controller; controller receives the report for police service and in time stops the drive motors operation behind the signal; prevented that drive motors from causing excess temperature to damage because of cooling fan breaks down; the current value of this method energy continuous detecting drive motors cooling fan; reach the accurate judgement of cooling fan operating state; effectively the prevention driving motor for electric automobile causes excess temperature to damage because of cooling fan goes wrong; protector also detects the pass of the thermal relay piece on drive motors signal and realizes the drive motors overheat protector simultaneously, has further improved the reliability of drive motors overheat protector.
Description of drawings
Below in conjunction with accompanying drawing, the present invention will be further described:
Accompanying drawing is a circuit theory schematic diagram of the present invention.
DC/DC is the DC/DC converter in the accompanying drawing; HALL is a Hall current sensor; R1 is a sensor matching resistance; U1A is the undercurrent comparator; U1B is the overcurrent comparator; R1 is the comparator output resistance; R2 is the undercurrent reference resistance; R3 is another undercurrent reference resistance; R4 is the overcurrent reference resistance; R5 is another overcurrent reference resistance; N1 is a triode; REL is a relay; D2 is the relay continued flow tube; D1 constitutes for the cooling fan continued flow tube; connecting terminal block upper connecting terminal 1; binding post 2; binding post 3; binding post 4; binding post 5; binding post 6; binding post 7 is used P1 successively respectively; P2; P3; P4; P5; P6 and P7 represent; the positive input terminal of DC/DC converter and negative input end are connected on the anodal V+ and negative pole V-of electric automobile low-voltage dc power supply successively by P1 and P3; DC/DC converter output+15V;-15V and+the 5V power supply; give the protector circuit supply; V+ is through receiving the positive source (power cathode of cooling fan meets V-) of the outer drive motors cooling fan of protector by P2 behind the current detecting through wires hole of HALL; after HALL detects drive motors cooling fan current value; produce the magnitude of voltage that is directly proportional with this current value at the R1 end and deliver to the positive input terminal of U1A and the negative input end of U1B; running current lower limit according to the drive motors cooling fan is selected R2 and R3 parameter; obtain the reference voltage value V1 value of undercurrent comparator U1A; running current higher limit according to the drive motors cooling fan is selected R4 and R5 parameter; obtain the reference voltage value V2 value of overcurrent comparator U1B; when drive motors cooling fan working current value is lower than lower limit or surpasses higher limit; the output output low level of U1A or U1B; triode N1 ends; relay R EL coil does not have; the normally opened contact of REL disconnects; this disconnection alarm signal S3 and S4 deliver to the outer drive motor controller of protector by P6 and P7; electric machine controller stops drive motors work after receiving this disconnection alarm signal; reach and prevent that drive motors from causing the drive motors excess temperature to damage because of fault of cooling fan continues operation; when drive motors cooling fan working current value is between higher limit and lower limit; the output output high level of U1A or U1B; the triode conducting; relay R EL coil electricity; the normally opened contact closure of REL; the outer drive motor controller of protector is confirmed the cooling fan operate as normal; do not realize the protection of drive motors; drive motors normally moves; protector is contained in the Chang Kaiduan signal S1 of the thermal relay on the drive motors and S2 is connected respectively to triode by P4 and P5 base stage and emitter outward; when thermal relay moves closure because of the drive motors temperature is too high by disconnection; triode N1 ends; relay R EL coil does not have; relay contact disconnects; electric machine controller transmit button alarm signal outside protector; electric machine controller stops the drive motors operation, realizes the overheat protector of drive motors.
Embodiment 1:
In the circuit shown in the drawings; at the anti-overheat protector device of the drive motors of a kind of wind cooling DC motor driven systems that uses in the electronic motor bus; low-voltage dc power supply is 24V on the car; it is the power module of WR24S5D15 that the DC/DC converter is selected model for use; Hall current sensor Q20A-10mA type magnetic balance transducer; R1=2K; U1A and U1B are two comparators on the LM2903 integrated comparator; because the running current lower limit and the higher limit of drive motors cooling fan are respectively respectively 6A and 10.2A successively; corresponding R2; R3; R4 and R5 value respectively are 3K; 2K; 2.4K and 5.1K; the undercurrent reference voltage V 1=6V that obtains; overcurrent reference voltage V 2=10.2V; R6=5.1K; relay R EL model is NT90RHC-SDC24; triode N1 model is BD237; D1 selects the 3A/100V diode; D2 selects the 1A/100V diode; the thermal relay of installing on the outer drive motors of protector be 60 ℃ of actions often drive thermal relay; like this when drive motors cooling fan operating current operate as normal and the detected drive motors temperature value of thermal relay in 6～10.2A scope n are lower than 60 ℃; the normally opened contact of relay R EL in the protector is a closure state; the outer drive motors control of protector keeps the drive motors operate as normal; when drive motors cooling fan operating current is lower than the 6A lower limit or is higher than on 10.2A higher limit or the drive motors the detected drive motors temperature value of thermal relay when surpassing 60 ℃; the contact output of relay R EL in the protector disconnects alarm signal; the outer drive motor controller of protector stops the drive motors operation after receiving this alarm signal, realizes the anti-overheat protector of drive motors.
Claims (2)
1. driving motor for electric automobile is prevented overheat protector device (hereinafter to be referred as protector); by the protector interior circuit board; protector outer casing; connecting terminal block three parts constitute; its core is the protector interior circuit board; protector interior circuit board circuit is by the DC/DC converter; Hall current sensor; sensor matching resistance; the undercurrent comparator; the overcurrent comparator; comparator output resistance R1; undercurrent reference resistance R2; undercurrent reference resistance R3; overcurrent reference resistance R4; overcurrent reference resistance R5; triode; relay; the relay continued flow tube; the cooling fan continued flow tube constitutes; connecting terminal block is by binding post 1; binding post 2; binding post 3; binding post 4; binding post 5; binding post 6; binding post 7 constitutes; low-voltage dc power supply positive pole on the electric automobile is connected to the positive input terminal of DC/DC converter by binding post 1; and the current detecting through wires hole of process Hall current sensor is behind binding post 2; receive the positive source (power cathode of fan is received on the low-voltage dc power supply negative pole on the electric automobile) of the outer drive motors cooling fan of protector; low-voltage dc power supply negative pole on the electric automobile is connected to the negative input end of DC/DC converter by binding post 3; the negative electrode of cooling fan continued flow tube is connected to binding post 2; anode is connected to binding post 3; DC/DC converter+15V output and Hall current sensor+15V power input; the end of undercurrent reference resistance R2; the end of overcurrent reference resistance R4 and undercurrent comparator+15V power input or overcurrent comparator+the 15V power input is connected; the other end of undercurrent reference resistance R2 is connected with the end of undercurrent reference resistance R3 and the negative input end of undercurrent comparator; the other end of overcurrent reference resistance R4 is connected with the end of overcurrent reference resistance R5 and the positive input terminal of overcurrent comparator; the other end of the other end of undercurrent reference resistance R3 and overcurrent reference resistance R5; one end of sensor matching resistance; the emitter of triode; the output ground of DC/DC converter is connected with binding post 5; the other end of sensor matching resistance and the output of Hall current sensor; the positive input terminal of undercurrent comparator is connected with the negative input end of overcurrent comparator; DC/DC converter-15V output and Hall current sensor-15V power input and undercurrent comparator-15V power input or overcurrent comparator-the 15V power input is connected; the DC/DC converter+coil one end of 5V output and relay; one end of the negative electrode of relay continued flow tube and sensor matching resistance is connected; the coil other end of relay is connected with the collector electrode of the anode of relay continued flow tube and triode; the output of the other end of sensor matching resistance and undercurrent comparator; the output of overcurrent comparator; the base stage of triode is connected with binding post 4; one end of relay normally open contact is connected to binding post 6; the other end is connected to binding post 7; Hall current sensor is according to the size of driving motor for electric automobile cooling fan operating current; on sensor matching resistance, produce the voltage signal that is directly proportional with this current value; and deliver to the positive input terminal of undercurrent comparator and the negative input end of overcurrent comparator; when the ohmically magnitude of voltage of sensor matching is lower than the undercurrent reference voltage or is higher than the overcurrent reference voltage; undercurrent comparator or overcurrent comparator output low level; relay contact disconnects; protector sends the protection alarm signal to drive motor controller; after electric machine controller is received this signal; stop drive motors work; to prevent that drive motors from causing the drive motors excess temperature to damage owing to the cooling channel effect is bad; according to the anti-overheat protector device of above-mentioned driving motor for electric automobile; its technical characterictic is: protector detects the current value of driving motor for electric automobile cooling fan; when the current value that detects surpasses the higher limit of cooling fan running current and is lower than the lower limit of cooling fan current value; send the switch alarm signal to stop the drive motors operation to drive motor controller, realize the anti-overheat protector of drive motors.
2. driving motor for electric automobile according to claim 1 is prevented the overheat protector device, it is characterized in that: the transducer that detects drive motors cooling fan operating current is a Hall current sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200410037837XA CN100353633C (en) | 2004-05-11 | 2004-05-11 | Excess temperature protector for driving motor of electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200410037837XA CN100353633C (en) | 2004-05-11 | 2004-05-11 | Excess temperature protector for driving motor of electric automobile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1571231A true CN1571231A (en) | 2005-01-26 |
| CN100353633C CN100353633C (en) | 2007-12-05 |
Family
ID=34481762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200410037837XA Expired - Fee Related CN100353633C (en) | 2004-05-11 | 2004-05-11 | Excess temperature protector for driving motor of electric automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100353633C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105158688A (en) * | 2015-09-06 | 2015-12-16 | 周子亮 | Dynamo-electric equipment fault positioning and alarm protective device |
| CN108923387A (en) * | 2018-06-15 | 2018-11-30 | 珠海格力电器股份有限公司 | Motor protection device, motor and protection method thereof |
| CN110389249A (en) * | 2018-04-23 | 2019-10-29 | 广州小鹏汽车科技有限公司 | A kind of detection device |
| CN111535915A (en) * | 2020-06-03 | 2020-08-14 | 龙城电装（常州）有限公司 | Control circuit for cooling fan controller |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6071308A (en) * | 1983-09-28 | 1985-04-23 | Mazda Motor Corp | Rear suspension of automobile |
| JPH10201210A (en) * | 1997-01-10 | 1998-07-31 | Zexel Corp | Brushless motor |
| TW444104B (en) * | 1999-10-21 | 2001-07-01 | Mitac Technology Corp | Fan protection device |
| JP3941731B2 (en) * | 2002-04-12 | 2007-07-04 | 株式会社デンソー | Load drive control device |
-
2004
- 2004-05-11 CN CNB200410037837XA patent/CN100353633C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105158688A (en) * | 2015-09-06 | 2015-12-16 | 周子亮 | Dynamo-electric equipment fault positioning and alarm protective device |
| CN105158688B (en) * | 2015-09-06 | 2018-01-12 | 周子亮 | Electromechanical equipment fault location and alarm protecting apparatus |
| CN110389249A (en) * | 2018-04-23 | 2019-10-29 | 广州小鹏汽车科技有限公司 | A kind of detection device |
| CN110389249B (en) * | 2018-04-23 | 2022-02-15 | 广州小鹏汽车科技有限公司 | Detection device |
| CN108923387A (en) * | 2018-06-15 | 2018-11-30 | 珠海格力电器股份有限公司 | Motor protection device, motor and protection method thereof |
| CN108923387B (en) * | 2018-06-15 | 2020-01-21 | 珠海格力电器股份有限公司 | Motor protection device, motor and protection method thereof |
| CN111535915A (en) * | 2020-06-03 | 2020-08-14 | 龙城电装（常州）有限公司 | Control circuit for cooling fan controller |
| CN111535915B (en) * | 2020-06-03 | 2021-11-26 | 龙城电装（常州）有限公司 | Control circuit for cooling fan controller |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100353633C (en) | 2007-12-05 |
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| C14 | Grant of patent or utility model | ||
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Owner name: BEIJING JINGGONG BROAD-OCEAN MOTOR TECHNOLOGY CO., Free format text: FORMER OWNER: BEIJING LIGONG UNIVERSITY Effective date: 20131113 |
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| C41 | Transfer of patent application or patent right or utility model | ||
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Free format text: CORRECT: ADDRESS; FROM: 100081 HAIDIAN, BEIJING TO: 100093 HAIDIAN, BEIJING |
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| TR01 | Transfer of patent right |
Effective date of registration: 20131113 Address after: 100093, Haidian District, Beijing and Han Garden No. 35, building -1 to 3, 02 Patentee after: Beijing Beijing Dayang ocean Motor Technology Co., Ltd. Address before: 100081 No. 5, Zhongguancun South Street, Haidian District, Beijing Patentee before: BEIJING INSTITUTE OF TECHNOLOGY |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071205 Termination date: 20160511 |
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| CF01 | Termination of patent right due to non-payment of annual fee |