CN209930178U - Self-protection device of driving system for electric vehicle - Google Patents
Self-protection device of driving system for electric vehicle Download PDFInfo
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- CN209930178U CN209930178U CN201920889050.8U CN201920889050U CN209930178U CN 209930178 U CN209930178 U CN 209930178U CN 201920889050 U CN201920889050 U CN 201920889050U CN 209930178 U CN209930178 U CN 209930178U
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- 238000004804 winding Methods 0.000 claims abstract description 85
- 238000010438 heat treatment Methods 0.000 claims abstract description 68
- 239000003638 chemical reducing agent Substances 0.000 claims description 18
- 239000004519 grease Substances 0.000 claims description 10
- HEZMWWAKWCSUCB-PHDIDXHHSA-N (3R,4R)-3,4-dihydroxycyclohexa-1,5-diene-1-carboxylic acid Chemical compound O[C@@H]1C=CC(C(O)=O)=C[C@H]1O HEZMWWAKWCSUCB-PHDIDXHHSA-N 0.000 claims description 7
- 238000004321 preservation Methods 0.000 abstract description 5
- 230000005611 electricity Effects 0.000 abstract 5
- 238000000034 method Methods 0.000 description 6
- 230000007613 environmental effect Effects 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000003618 dip coating Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model relates to the technical field of automobile driving system protection equipment, in particular to a self-protection device of a driving system for an electric vehicle; the device includes motor on-off state sensor, humidity transducer, temperature sensor and winding heating power supply control switch, motor on-off state sensor passing signal line is connected with the trigger switch electricity, the trigger switch passing signal line is connected with or a chip electricity, humidity transducer with temperature sensor respectively passing signal line with or a chip electricity is connected, or a chip passing signal line with judge the comparator electricity and be connected, judge the comparator passing signal line with winding heating power supply control switch electricity is connected. The utility model discloses a driving system's for electric motor car self preservation protects device takes the mode of winding self-heating, opens the self-heating function under specific operating mode, can enough protect the winding to avoid weing, can preheat for driving system when the automobile starts again, realizes good self preservation and protects the function.
Description
Technical Field
The utility model relates to a car actuating system protection equipment technical field especially relates to an actuating system's self preservation protects device for electric motor car.
Background
At present, new energy vehicles are more and more emphasized by the nation and common people due to energy conservation and environmental protection, and compared with traditional vehicles, the new energy vehicles are mainly reflected in the difference of three electrical systems, mainly comprise batteries, motors and electronic control, have harsh environments required by the vehicles, and can safely operate under various extreme working conditions, such as high temperature, low temperature, humidity and other environments without environmental influence when operating for a long time.
When the new energy automobile parks under low temperature and humid environment, the motor winding can be because of the drop of water that generates in the outside face that wets, under the insulating bad condition of winding dip coating, the drop of water very easily gets into around winding inside, can corrode electromagnetic wire insulation system like this to easy short circuit causes serious potential safety hazard to the motor.
Chinese patent CN201821621941, an anti-freezing and moisture-proof motor device, provides an anti-freezing and moisture-proof motor device, which comprises a machine body, a fan housing, a brake, a heating device and a junction box; the fan cover is positioned on one side of the machine body and is fixedly connected with the machine body; the brake is positioned in the fan housing, fixed in the fan housing and connected with the machine body; the heating device is positioned on one side of the brake and is fixedly connected with the machine body; the junction box is positioned on one side of the outer side of the machine body, is fixedly connected with the machine body, and is connected with the brake and the heating device; cover behind the motor and install heating device additional for can no longer have dewfall and moisture phenomenon on the friction disc, guarantee the normal use of motor, heating device buries in the motor back lid simultaneously, does not influence the use of original structure. However, the above structure requires an additional heating device, which results in increased manufacturing cost and complicated wiring of the motor.
Therefore, in order to solve the above problems, it is urgently required to invent a new self-protection device of a driving system for an electric vehicle.
Disclosure of Invention
The utility model aims to provide a: the self-protection device of the driving system for the electric vehicle is provided, the winding self-heating mode is adopted, the self-heating function is started under a specific working condition, the winding can be protected from being affected with damp, the driving system can be preheated when the vehicle is started, and the good self-protection function is achieved.
The utility model provides a following scheme:
a self-protection device of a driving system for an electric vehicle comprises a motor switch state sensor which is arranged on a motor and used for collecting motor switch state signals, a humidity sensor which is arranged in a motor shell and used for collecting motor winding humidity signals, a temperature sensor which is arranged in a speed reducer and used for collecting speed reducer grease temperature signals and a winding heating power supply control switch which is arranged on the motor and used for controlling the heating on-off of a motor winding, the motor switch state sensor is electrically connected with the trigger switch through a signal wire, the trigger switch is electrically connected with the OR gate chip through a signal wire, the humidity sensor and the temperature sensor are respectively and electrically connected with the OR gate chip through signal wires, the OR gate chip is electrically connected with a judgment comparator through a signal wire, and the judgment comparator is electrically connected with the winding heating power supply control switch through a signal wire; and the winding heating power supply control switch is respectively and electrically connected with the winding heating power supply and the motor winding through power supply lines.
Preferably, the winding heating power supply includes an on-vehicle battery pack and a DCDC converter, and the on-vehicle battery pack, the DCDC converter and the winding heating power supply control switch are electrically connected in sequence through a power supply line.
Preferably, the winding heating power supply control switch is electrically connected in series in sequence through any two phases of the motor windings of the power supply line.
Preferably, the winding heating power supply adopts a 12V direct current power supply.
Preferably, the power output shaft of the motor and the power input shaft of the speed reducer are directly mechanically connected.
Preferably, the temperature sensor is any one of an infrared temperature sensor and a thermocouple.
Preferably, the judgment comparator is implemented by using a comparison chip.
Preferably, the model of the comparison chip is FM 131.
Preferably, the winding heating power supply control switch is any one of an electromagnetic switch and a manual switch.
Preferably, the humidity sensor is any one of a resistive humidity sensor and a capacitive humidity sensor.
The utility model discloses the beneficial effect who produces:
the utility model discloses a self-protection device of a driving system for an electric vehicle, which comprises a motor switch state sensor arranged on a motor and used for collecting motor switch state signals, a humidity sensor arranged in a motor shell and used for collecting motor winding humidity signals, a temperature sensor arranged in a speed reducer and used for collecting speed reducer grease temperature signals and a winding heating power supply control switch arranged on the motor and used for controlling the heating on-off of a motor winding, the motor switch state sensor is electrically connected with the trigger switch through a signal wire, the trigger switch is electrically connected with the OR gate chip through a signal wire, the humidity sensor and the temperature sensor are respectively and electrically connected with the OR gate chip through signal wires, the OR gate chip is electrically connected with a judgment comparator through a signal wire, and the judgment comparator is electrically connected with the winding heating power supply control switch through a signal wire; the winding heating power supply control switch is respectively and electrically connected with a winding heating power supply and a motor winding through a power supply line; through setting up winding heating power supply control switch and winding heating power supply, adopt the mode of winding self-heating, open the self-heating function under specific operating mode, can enough protect the winding to avoid weing, can preheat for actuating system when the automobile starts again, realize good self preservation and protect the function.
Drawings
Fig. 1 is a schematic structural view of the self-protection device of the driving system for an electric vehicle according to the present invention.
Fig. 2 is a flowchart of a self-protection method of a driving system for an electric vehicle according to the present invention.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1, a self-protection device of a driving system for an electric vehicle comprises a motor switch state sensor arranged on a motor and used for collecting motor switch state signals, a humidity sensor arranged in a motor shell and used for collecting motor winding humidity signals, a temperature sensor arranged in a speed reducer and used for collecting speed reducer grease temperature signals, and a winding heating power supply control switch arranged on the motor and used for controlling the heating on-off of a motor winding, the motor switch state sensor is electrically connected with the trigger switch through a signal wire, the trigger switch is electrically connected with the OR gate chip through a signal wire, the humidity sensor and the temperature sensor are respectively and electrically connected with the OR gate chip through signal wires, the OR gate chip is electrically connected with a judgment comparator through a signal wire, and the judgment comparator is electrically connected with the winding heating power supply control switch through a signal wire; and the winding heating power supply control switch is respectively and electrically connected with the winding heating power supply and the motor winding through power supply lines. The winding heating power supply comprises a vehicle-mounted battery pack and a DCDC converter, and the vehicle-mounted battery pack, the DCDC converter and the winding heating power supply control switch are electrically connected in sequence through power supply lines. The winding heating power supply control switch is electrically connected in series in sequence through any two phases in the motor winding. The winding heating power supply adopts a 12V direct current power supply. The power output shaft of the motor is directly and mechanically connected with the power input shaft of the speed reducer. The temperature acquisition range of the temperature sensor is from +49 ℃ to-7 ℃. The judgment comparator is realized by adopting a comparison chip. The model of the comparison chip is FM 131. The winding heating power supply control switch is an electromagnetic switch, and during specific implementation, the winding heating power supply control switch can also be a manual switch.
Referring to fig. 2, in this embodiment, a self-protection method of a driving system for an electric vehicle, implemented based on the self-protection device of the driving system for an electric vehicle, is further provided, and includes the following steps:
detecting the running state of the motor; when the motor is in a stop state, detecting the humidity of a winding in the motor and the temperature of grease in a speed reducer; and when the humidity of the motor winding is greater than a humidity threshold value or the temperature of grease of the speed reducer is lower than a temperature threshold value, the winding heating power supply control switch is turned on to supply power to the motor winding, so that the self-heating of the motor winding is realized.
The self-protection device of the driving system for the electric vehicle in the embodiment comprises a motor switch state sensor, a humidity sensor, a temperature sensor and a winding heating power supply control switch, wherein the motor switch state sensor is arranged on a motor and used for collecting motor switch state signals, the humidity sensor is arranged in a motor shell and used for collecting motor winding humidity signals, the temperature sensor is arranged in a speed reducer and used for collecting speed reducer grease temperature signals, the winding heating power supply control switch is arranged on the motor and used for controlling the motor winding to be heated and switched on and off, the motor switch state sensor is electrically connected with the trigger switch through a signal wire, the trigger switch is electrically connected with the OR gate chip through a signal wire, the humidity sensor and the temperature sensor are respectively and electrically connected with the OR gate chip through signal wires, the OR gate chip is electrically connected with a judgment comparator through a signal wire, and the judgment comparator is electrically connected with the winding heating power supply control switch through a signal wire; the winding heating power supply control switch is respectively and electrically connected with a winding heating power supply and a motor winding through a power supply line; through setting up winding heating power supply control switch and winding heating power supply, adopt the mode of winding self-heating, open the self-heating function under specific operating mode, can enough protect the winding to avoid weing, can preheat for actuating system when the automobile starts again, realize good self preservation and protect the function.
In this embodiment, the working process of the self-protection device of the driving system for the electric vehicle is as follows: the method comprises the steps of judging the running state of a vehicle, judging the temperature of grease of a motor reducer and judging the humidity condition of a motor winding. Judging whether the temperature data is lower than a preset value or not, and judging whether the humidity data reaches an open or gate circuit state or not; if yes, the winding heating device is started, and if not, the step 1 is returned to continuously judge the monitored data. And step three, switching on a winding heating power supply control switch, starting a winding heating device, and monitoring temperature and humidity data. And step four, judging whether the temperature data obtain a set value or not, and judging whether the humidity data reach a preset value or not. If yes, the output of the OR gate is 0, if not, the output of the AND gate is AND 1 (0 is set as OFF, 1 is set as ON). The specific process is described as follows:
in the first step, whether the vehicle is in a parking power-off state or not is judged, under the parking power-off condition, the temperature conditions of the motor and the speed reducer, including the temperature of lubricating grease, are collected, meanwhile, the humidity condition of a motor winding is judged, and the temperature and the humidity are both collected by sensors. The upper threshold of the temperature is 49 degrees, the lower threshold is-7 degrees, and the effective condition of the humidity sensor is the dew condensation temperature J +5 ℃ shown in the table I as the judgment basis.
In the second step and the third step, at least one value of the judged temperature and humidity reaches a preset upper limit value, the winding heating power supply control switch is turned off, a certain two-phase winding of the motor of the DCDC converter is electrified with direct current, the generated heat is self-heated by the winding, and the heat is transmitted to the speed reducer through the mechanical connecting device to heat lubricating grease.
Table-dew temperature corresponding table
And in the fourth step, continuously judging the data collected by the sensor, and if the data reach reasonable values, turning off the OR gate and cutting off the circuit.
According to the self-protection device of the driving system for the electric vehicle, a heating device is not required to be additionally arranged, and the humidity control of the motor and the temperature control of the gearbox are realized by using a winding heating method; the self-protection function of the vehicle driving system is realized.
In the self-protection device of the driving system for the electric vehicle in this embodiment, the model of the temperature sensor is BH53-SI-111, the model of the humidity sensor is HS15P, and the model of the or gate chip is 7432 TTL.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. A self-protection device of a driving system for an electric vehicle is characterized in that: the motor switch state sensor is arranged on a motor and used for collecting motor switch state signals, the humidity sensor is arranged in a motor shell and used for collecting motor winding humidity signals, the temperature sensor is arranged in a speed reducer and used for collecting speed reducer grease temperature signals, and the winding heating power supply control switch is arranged on the motor and used for controlling the heating on-off of a motor winding; and the winding heating power supply control switch is respectively and electrically connected with the winding heating power supply and the motor winding through power supply lines.
2. The self-protection device of a drive system for an electric vehicle according to claim 1, characterized in that: the winding heating power supply comprises a vehicle-mounted battery pack and a DCDC converter, and the vehicle-mounted battery pack, the DCDC converter and the winding heating power supply control switch are electrically connected in sequence through power supply lines.
3. The self-protection device of a drive system for an electric vehicle according to claim 2, characterized in that: the winding heating power supply control switch is electrically connected in series in sequence through any two phases in the motor winding.
4. The self-protection device of a drive system for an electric vehicle according to claim 3, characterized in that: the winding heating power supply adopts a 12V direct current power supply.
5. The self-protection device of a drive system for an electric vehicle according to claim 4, characterized in that: the power output shaft of the motor is directly and mechanically connected with the power input shaft of the speed reducer.
6. The self-protection device of a drive system for an electric vehicle according to claim 5, characterized in that: the temperature sensor adopts any one of an infrared temperature sensor and a thermocouple.
7. The self-protection device of a drive system for an electric vehicle according to claim 6, characterized in that: the judgment comparator is realized by adopting a comparison chip.
8. The self-protection device of a drive system for an electric vehicle according to claim 7, characterized in that: the model of the comparison chip is FM 131.
9. The self-protection device of a drive system for an electric vehicle according to claim 8, characterized in that: the winding heating power supply control switch is any one of an electromagnetic switch and a manual switch.
10. The self-protection device of a drive system for an electric vehicle according to claim 9, characterized in that: the humidity sensor adopts any one of a resistance-type humidity sensor and a capacitance-type humidity sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920889050.8U CN209930178U (en) | 2019-06-13 | 2019-06-13 | Self-protection device of driving system for electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920889050.8U CN209930178U (en) | 2019-06-13 | 2019-06-13 | Self-protection device of driving system for electric vehicle |
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| CN209930178U true CN209930178U (en) | 2020-01-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920889050.8U Expired - Fee Related CN209930178U (en) | 2019-06-13 | 2019-06-13 | Self-protection device of driving system for electric vehicle |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110071682A (en) * | 2019-06-13 | 2019-07-30 | 北斗航天汽车（北京）有限公司 | Self-protecting device, the self-protection method of electric vehicles drive system |
| US11898917B2 (en) * | 2020-08-31 | 2024-02-13 | Siemens Aktiengesellschaft | Method for monitoring a coil temperature |
-
2019
- 2019-06-13 CN CN201920889050.8U patent/CN209930178U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110071682A (en) * | 2019-06-13 | 2019-07-30 | 北斗航天汽车（北京）有限公司 | Self-protecting device, the self-protection method of electric vehicles drive system |
| US11898917B2 (en) * | 2020-08-31 | 2024-02-13 | Siemens Aktiengesellschaft | Method for monitoring a coil temperature |
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Granted publication date: 20200110 |