CN209802529U - temperature monitoring device for high-voltage connector - Google Patents
temperature monitoring device for high-voltage connector Download PDFInfo
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- CN209802529U CN209802529U CN201920439867.5U CN201920439867U CN209802529U CN 209802529 U CN209802529 U CN 209802529U CN 201920439867 U CN201920439867 U CN 201920439867U CN 209802529 U CN209802529 U CN 209802529U
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Abstract
The utility model discloses a high voltage connector temperature monitoring device, including the high voltage connector, the inside of high voltage connector is provided with high voltage connector terminal, is provided with temperature sensor between the positive terminal of high voltage connector terminal and the negative terminal, and temperature sensor adopts PT1000 temperature sensor, and temperature sensor passes through the low pressure cable and connects the low pressure connector, and the low pressure connector adopts 2P foot low pressure connector. The resistance of thermal resistance PT1000 is linear, and measurement accuracy is reliable and stable, and PT1000 temperature sensor measurement sensitivity is higher than NTC temperature sensing, and every degree centigrade difference in resistance is only a few ohms, can provide integrated temperature detection and early warning for new forms of energy high voltage connector, has overcome that heavy current transships and causes the connector high temperature to damage the drawback of burning out, is a fine innovation scheme, has very much the marketing prospect.
Description
Technical Field
The utility model discloses the automotive control field especially relates to a high-voltage connector temperature monitoring device.
Background
With the rapid development of new energy vehicle technology, the high-voltage safety problem in the driving process draws extensive attention; compared with the traditional vehicle, the new energy electric vehicle has the advantages that large current and large voltage exist in the driving and charging and discharging processes, and the temperature rise of each high-voltage system device is high; the high-voltage connector is used as a main part for transferring kinetic energy of the electric automobile of the new energy automobile, and plays a vital role in driving safety; however, the current high-voltage connector only plays a role of connection, so that the current working temperature state of the high-voltage connector is not clear to a vehicle controller in the driving process.
therefore, the temperature of the high-current high-voltage connector needs to be detected and an alarm signal needs to be sent out. However, currently, NTC temperature sensors are generally used for detecting the temperature of the high-voltage connector; the B value of the NTC sensor is not linearly reflected, the received temperature is relatively direct, the measurement precision is also influenced by no linearity, and the resistance difference of every DEG C of the NTC sensor is dozens of ohms, if the NTC temperature sensor is used in the process of transmitting large-current kinetic energy, the contact of a connector is poor, the environment temperature of the connector is too high, or a high-voltage element abnormally works to generate too large current, or when the charging power of a future electric vehicle is more than 3 ℃, the NTC temperature sensing detection is not accurate enough due to the fact that every DEG C of a high-voltage terminal is increased and the resistance difference is too large, and warning signals cannot be sent out timely, so that the potential risk of the whole vehicle and the personal safety are caused. The requirements of the automobile on the safety performance cannot be met.
In summary, there is a need for a temperature monitoring device for high voltage connectors to overcome the deficiencies of the prior art.
SUMMERY OF THE UTILITY MODEL
to the problem that exists among the prior art, the utility model provides a high-pressure connector temperature monitoring device, the modern design adopts PT1000 temperature sensor, and not only the precision is high, and the cost of using moreover is lower, and the practicality is excellent, has solved the defect of prior art.
In order to achieve the above purpose, the technical solution of the present invention is as follows:
The utility model provides a high voltage connector temperature monitoring device, includes the high voltage connector, and the inside of high voltage connector is provided with high voltage connector terminal, is provided with temperature sensor between the positive terminal and the negative terminal of high voltage connector terminal, and temperature sensor adopts PT1000 temperature sensor, and temperature sensor passes through the low pressure cable and connects the low voltage connector, and the low voltage connector adopts 2P foot low voltage connector.
Furthermore, the positive pole of the power supply of the low-voltage connector is connected with the low-voltage power supply of the whole vehicle, and the negative pole of the power supply of the low-voltage connector is connected with the battery management module.
Further, the battery management module converts the resistance coefficient of the current temperature sensor into a corresponding temperature value and transmits the temperature value to the vehicle control unit through a CAN bus signal, and the vehicle control unit transmits a warning signal to the instrument panel after performing logic judgment.
The utility model has the advantages that: the modern design, thermal resistance PT 1000's resistance is linear, and measurement accuracy is reliable stable, and PT1000 temperature sensor measurement sensitivity is higher than NTC temperature sensing, and every degree centigrade resistance difference only has a few ohms, can provide integrated temperature detection and early warning for new forms of energy high voltage connector, has overcome heavy current overload and has aroused connector high temperature to damage the drawback of burning out, simple installation, and the practicality is excellent, is a fine innovation scheme, has very much the market popularization prospect.
Drawings
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments:
Fig. 1 is a front view of the present invention;
fig. 2 is a top view of the present invention;
FIG. 3 is a block diagram of the device of the present invention;
In the figure, 1-a high-voltage connector, 2-a temperature sensor, 3-a low-voltage cable, 4-a low-voltage connector, 5-a high-voltage connector terminal, 41-a battery management module, 42-a vehicle control unit and 43-an instrument panel.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand and understand, the present invention is further explained by combining with the specific drawings.
Referring to fig. 1, 2 and 3, a high-voltage connector temperature monitoring device includes a high-voltage connector 1, a high-voltage connector terminal 5 is arranged inside the high-voltage connector 1, a temperature sensor 2 is arranged between a positive terminal and a negative terminal of the high-voltage connector terminal 5, the temperature sensor 2 is a PT1000 temperature sensor, the temperature sensor 2 is connected to a low-voltage connector 4 through a low-voltage cable 3, and the low-voltage connector 4 is a 2P pin low-voltage connector.
In addition, the power supply positive pole of the low-voltage connector 4 is connected with the low-voltage power supply of the whole vehicle, and the power supply negative pole of the low-voltage connector 4 is connected with the battery management module 41. The battery management module 41 converts the resistance coefficient of the current temperature sensor into a corresponding temperature value, and transmits the temperature value to the vehicle control unit 42 through a CAN bus signal, and the vehicle control unit 42 transmits a warning signal to the instrument panel 43 after performing logic judgment.
The utility model provides an integrated temperature detection and warning system for a new energy high voltage connector, when the temperature of the high voltage connector exceeds a limited range value due to the outside or self reasons, a warning signal is provided for a driver in time and displayed on an instrument panel to prompt in-time maintenance and troubleshooting; the use safety of the high-current high-voltage connector is ensured.
the utility model discloses a thermal resistance PT 1000's resistance have linearly, and measurement accuracy is reliable stable. The measurement sensitivity of the PT1000 temperature sensor is higher than that of an NTC temperature sensor, the resistance difference at every degree of centigrade is only a few ohms, the temperature sensor PT1000 is placed between a positive terminal and a negative terminal of a high-voltage connector, the temperature sensor is mainly used for measuring the temperature of the high-voltage connector, the measurement precision and the sensitivity are higher than that of the NTC temperature sensor, the temperature acquisition and processing processes the resistance coefficients of the received temperature sensor to calculate the temperature values of the high-voltage connector and the negative terminal, and when the temperature values are higher than 150 degrees centigrade, signals are transmitted to an instrument panel through a CAN bus to prompt a driver of a vehicle to have a.
The method comprises the following concrete steps:
Firstly, the low-voltage connector selects a 2P pin low-voltage connector, and is respectively connected with the anode of a low-voltage power supply of the whole vehicle and the cathode of the power supply to be connected with a BMS system.
And secondly, acquiring the current resistance coefficient of the temperature sensor PT1000 in the high-voltage connector by the BMS system.
And thirdly, the BMS converts the resistance coefficient of the current PT1000 temperature sensor into a corresponding temperature value, and transmits the temperature value to the vehicle control unit module through a CAN bus signal.
Fourthly, the vehicle controller module makes a logic judgment on the received temperature value,
If the temperature value is less than 150 ℃, the vehicle controller cannot send out a warning signal to the instrument panel; and if the temperature value is more than 150 ℃, the whole vehicle controller transmits the warning signal to the instrument panel through the CAN bus.
The utility model discloses an integrate the product, compare with NTC and both CAN use after only needing 2 low-voltage circuit and whole car power, ground connection and CAN bus signal line, the expense of having saved 2 low-voltage circuit in the cost is simple and easy convenient than NTC on overall arrangement, has avoided still needing drilling technology on the high-pressure terminal if using NTC. In the charging or driving process, the temperature rise condition of each high-voltage connector is monitored in real time, and the over-high temperature information is sent to the vehicle control unit through the CAN bus through BMS data acquisition, so that the early warning processing of the temperature rise CAN be realized, a driver is timely reminded to cut off the high voltage, and the fault is eliminated.
The PT1000 temperature sensor is placed between two terminals of the high-voltage connector, CAN be used after being connected with a power supply, a ground and a CAN bus signal wire of a whole vehicle, monitors the temperature rise conditions of positive and negative terminals of each high-voltage connector in real time in the charging or driving process of the electric vehicle, sends overhigh temperature rise information to the whole vehicle controller through the CAN bus by the data acquisition module, CAN realize early warning processing on the temperature rise of the whole vehicle, timely reminds a driver to cut off high voltage, eliminates faults and avoids loss of personnel and property.
The utility model discloses the most important innovation point lies in: the high-current high-voltage connector has a temperature detection function, the defect that the connector is too high in temperature to damage and burn due to high-current overload is overcome, and the high-current high-voltage connector has the temperature detection function. The PT1000 temperature sensor is used in the set of functions, the development is simple, the measurement precision is higher than that of the NTC, and the performance is reliable and stable. Only the reasonable and perfect design of the implemented logic program is needed.
The measurement sensitivity of the PT1000 temperature sensor is higher than that of the NTC, the resistance difference of every degree of centigrade is only a few ohms, and the resistance difference of every degree of centigrade of the NTC is a few tens of ohms. The PT1000 has wide temperature measuring range, reliable and stable performance, high mechanical strength and good pressure resistance, and simultaneously, when a temperature gradient exists in a medium, the temperature which can be measured is the average temperature in the medium layer within the range of the two terminals. Install PT1000 thalposis in heavy current high voltage connector and ensure to play relatively safe guarantee to temperature real-time supervision when driving a vehicle in-process or high-power charge, avoided the possibility to personal safety and vehicle damage, and suggestion navigating mate's effect is simple and easy convenient.
It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (3)
1. The utility model provides a high voltage connector temperature monitoring device, includes high voltage connector, and high voltage connector's inside is provided with high voltage connector terminal, its characterized in that: a temperature sensor is arranged between the positive terminal and the negative terminal of the high-voltage connector terminal, the temperature sensor is a PT1000 temperature sensor, the temperature sensor is connected with a low-voltage connector through a low-voltage cable, and the low-voltage connector is a 2P pin low-voltage connector.
2. The high-voltage connector temperature monitoring device of claim 1, wherein: the positive pole of the power supply of the low-voltage connector is connected with the low-voltage power supply of the whole vehicle, and the negative pole of the power supply of the low-voltage connector is connected with the battery management module.
3. the high-voltage connector temperature monitoring device according to claim 2, characterized in that: the battery management module converts the resistance coefficient of the current temperature sensor into a corresponding temperature value and transmits the temperature value to the vehicle control unit through a CAN bus signal, and the vehicle control unit transmits a warning signal to the instrument panel after performing logic judgment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920439867.5U CN209802529U (en) | 2019-04-02 | 2019-04-02 | temperature monitoring device for high-voltage connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920439867.5U CN209802529U (en) | 2019-04-02 | 2019-04-02 | temperature monitoring device for high-voltage connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209802529U true CN209802529U (en) | 2019-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920439867.5U Expired - Fee Related CN209802529U (en) | 2019-04-02 | 2019-04-02 | temperature monitoring device for high-voltage connector |
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| Country | Link |
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| CN (1) | CN209802529U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115236561A (en) * | 2022-06-13 | 2022-10-25 | 中国第一汽车股份有限公司 | Connector testing method and device |
| US11799250B2 (en) | 2021-03-03 | 2023-10-24 | Aptiv Technologies Limited | Passive detection of overheating in a power connector |
-
2019
- 2019-04-02 CN CN201920439867.5U patent/CN209802529U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11799250B2 (en) | 2021-03-03 | 2023-10-24 | Aptiv Technologies Limited | Passive detection of overheating in a power connector |
| CN115236561A (en) * | 2022-06-13 | 2022-10-25 | 中国第一汽车股份有限公司 | Connector testing method and device |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191217 |
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| CF01 | Termination of patent right due to non-payment of annual fee |