CN114323484A - Air tightness detection method of electric connector and vehicle-end electric connecting device - Google Patents
Air tightness detection method of electric connector and vehicle-end electric connecting device Download PDFInfo
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/46—Bases; Cases
- H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The invention discloses an air tightness detection method of an electric connector and a vehicle end electric connecting device, wherein the electric connector comprises a vehicle end electric connecting device and a battery end electric connecting device which are mutually matched to realize electric connection, the vehicle end electric connecting device is provided with a circle of annular sealing ring, when the vehicle end electric connecting device and the battery end electric connecting device are matched to realize electric connection, the annular sealing ring is respectively connected with the matching ends of the vehicle end electric connecting device and the battery end electric connecting device to form a closed cavity, and the air tightness detection method is used for detecting whether the closed cavity leaks air and comprises the following steps: filling a preset volume of gas into the closed cavity; and detecting the air pressure in the closed cavity, and judging whether the closed cavity leaks air or not according to the air pressure. This application is through to sealing the cavity and charging into the air and monitoring atmospheric pressure data, can be effective, initiative, the leakproofness of rapid judgement connector, further improves the security of driving a vehicle.
Description
Technical Field
The invention belongs to the field of intelligent detection of battery replacement equipment, and particularly relates to an air tightness detection method of an electric connector and a vehicle-end electric connection device.
Background
For driving safety, an electric automobile has strict requirements on the sealing performance of an electric connector, a sealing ring of the electric connector used for sealing an automobile end and a battery end can be pulled by the electric automobile with a replaceable plate due to frequent disassembly and assembly of the battery, the sealing ring is pulled for multiple times, the sealing effect is easy to reduce, driving unsafety is caused, the current replaceable electric connector cannot realize sealing performance detection after replacement every time, and great potential safety hazards exist.
Chinese patent CN201811642277.9 published 7.7.2020, discloses an electrical connector, which is a battery end connection part of a quick-change connector, for connecting with a battery pack, and the electrical connector is provided with a sealing detection device for detecting the air pressure in a cavity formed after the electrical connector and a vehicle end electrical connector are electrically connected in a butt joint manner, but the cavity is smaller, and the initial value of the internal air pressure is originally smaller, so that if the electrical connector leaks air due to aging of a sealing element, the detected air pressure change in the cavity is not too large, thereby greatly reducing the detection sensitivity.
Disclosure of Invention
The invention aims to overcome the defect that potential safety hazards exist due to the fact that a power switching connector in the prior art cannot automatically detect sealing performance, and provides an air tightness detection method of an electric connector and a vehicle-end electric connection device.
The invention solves the technical problems through the following technical scheme:
the utility model provides an airtight detection method of electric connector, electric connector includes car end electric connector and the electric connecting device of battery end that mutually support and realize the electricity and connect, car end electric connector has a round ring seal, car end electric connector with when the electric connecting device cooperation of battery end realizes the electricity and connects, ring seal connects car end electric connector with the cooperation end of the electric connecting device of battery end is in order to form and seals the cavity respectively, airtight detection method is used for detecting whether seal the cavity leaks gas, includes:
filling a preset volume of gas into the closed cavity;
and detecting the air pressure in the closed cavity, and judging whether the closed cavity leaks air or not according to the air pressure.
The leakproofness of the closed cavity after the battery end electric connection device and the vehicle end electric connection device are matched is easy to lose efficacy, the scheme is that air is filled into the closed cavity and air pressure data is monitored, the air pressure inside the closed cavity is increased through active inflation so as to accelerate the change of the air pressure when air leakage occurs, so that the leakproofness of the connector can be effectively, actively and quickly judged, and the driving safety is further improved.
Preferably, the step of detecting the air pressure in the closed cavity and determining whether the closed cavity leaks air according to the air pressure specifically includes:
detecting the air pressure in the closed cavity at a first moment to obtain a first air pressure value;
comparing the first air pressure value with a preset standard air pressure value to obtain a comparison result;
judging whether the closed cavity leaks air or not according to the comparison result;
alternatively, the first and second electrodes may be,
detecting the air pressure in the closed cavity at a first moment and a second moment respectively to obtain a first air pressure value and a second air pressure value;
comparing the first air pressure value with the second air pressure value to obtain a comparison result;
and judging whether the closed cavity leaks air or not according to the comparison result.
The real-time air pressure value is compared with the standard air pressure value to obtain a comparison result, or the air pressure value in the sealed cavity is dynamically monitored, the comparison result is obtained according to the air pressure change value, whether the sealed cavity leaks air or not is further judged based on the comparison result, and the detection method is convenient, rapid, direct and accurate.
Preferably, the step of determining whether the sealed cavity leaks air according to the comparison result specifically includes:
and judging whether the comparison result is in a preset range, if so, not leaking gas from the closed cavity, and if not, leaking gas from the closed cavity.
By judging whether the comparison result is within the preset range instead of being compared with a determined value, the misjudgment caused by the influence of the bumping generated by the vehicle on the air pressure in the closed cavity can be avoided. Preferably, after the air leakage of the closed cavity is determined, the air tightness detecting method further includes:
sending out a warning signal;
and/or the presence of a gas in the gas,
and filling gas into the closed cavity to ensure that the gas pressure in the closed cavity is kept within a preset gas pressure range.
After detecting the sealed cavity gas leakage, in time remind the user through the warning signal to can in time maintain electric connector, vehicle trouble when preventing follow-up wading, ensure the security of driving, in addition, after detecting gas leakage, in order to avoid can not in time maintain the safety that causes the driving, can further continuously fill gas into sealed cavity, constantly fill dry clean air into sealed cavity, in order to ensure the malleation in the sealed cavity, prevent foreign matters such as rainy day's humid air, dust, water from getting into the connector cavity, play certain initiative guard's effect.
A vehicle end electric connection device is provided with a circle of annular sealing ring, when the vehicle end electric connection device is matched with a battery end electric connection device to realize electric connection, the annular sealing ring is respectively connected with the vehicle end electric connection device and the matching end of the battery end electric connection device to form a closed cavity, and the vehicle end electric connection device comprises a detection part;
the detection part is arranged on the vehicle end electric connection device and is communicated with the closed cavity;
the detection component is used for realizing the air tightness detection method of the electric connector.
The detection component is arranged on the vehicle-end electric connection device and is used for carrying out air tightness detection on a closed cavity formed by matching the connectors, so that the electric connectors can actively judge the air tightness according to the air pressure in the cavity, the sealing performance of the electric connectors after power change can be found in time, and the driving safety is further improved.
Preferably, the detection part comprises an inflation element and a detection element;
the inflatable element comprises an air inlet and an air outlet, the air inlet is communicated with external air, and the air outlet is communicated with the closed cavity;
the detection element comprises an air pressure detection port which is communicated with the closed cavity;
the inflation element is used for inflating the closed cavity, and the detection element is used for detecting air pressure in the closed cavity.
The detection component comprises an inflating element and a detection element which are matched with each other, the inflating element sucks external air through the air inlet and fills the air into the closed cavity through the air outlet, the air pressure inside the closed cavity is actively increased to accelerate the change of the air pressure during air leakage, then the detection element detects the air pressure in the closed cavity through the air pressure detection port communicated with the closed cavity, and further the air pressure is monitored to detect the sealing performance of the closed cavity.
Preferably, the vehicle-end electric connection device comprises a fixed seat, two air holes are formed in the fixed seat, and the two air holes are respectively communicated with the air outlet and the air pressure detection port.
Through the setting of fixing base to ensure the fixed connection of test part and car end electric connection device, the gas pocket that corresponds the setting is in order to ensure to advance, gas outlet and air pressure detect the intercommunication of mouth and closed cavity, guarantees the normal cooperation between the structure.
Preferably, the detection means further comprises a control unit;
the control unit is connected with the control end of the inflatable element and used for controlling the start and stop of the inflatable element; and/or the control unit is connected with the signal end of the detection element and used for receiving the air pressure data in the closed cavity detected by the detection element.
The detection part needs the control unit to realize effective association among all elements except the inflating element and the detection element which are matched with each other, and the control unit can analyze the acquired air pressure data in time on one hand and can accurately control the starting and stopping of the inflating element on the other hand.
Preferably, after receiving the air pressure data, the control unit is further configured to determine whether the sealed cavity is air-leaking according to the air pressure data; and/or the presence of a gas in the gas,
and meanwhile, the control unit is also used for sending a warning signal when the closed cavity leaks air, and/or the control unit is also used for controlling the inflation element to inflate the air into the closed cavity so as to ensure that the air pressure in the closed cavity is kept within a preset air pressure range.
The control unit timely analyzes whether the sealed cavity leaks air or not after acquiring the air pressure data, if so, the control unit timely reminds a user through a warning signal so as to timely maintain the electric connecting device, prevent the vehicle from breaking down in the subsequent wading process and ensure the safety of driving, and in addition, after the air leakage is detected, in order to avoid the driving safety caused by the incapability of timely maintaining, the control unit further controls the inflating element to continuously inflate the sealed cavity with air, continuously inflate dry and clean air into the sealed cavity so as to ensure the positive pressure in the sealed cavity, prevent foreign matters such as humid air, dust, water and the like in rainy days from entering the cavity of the connector, and plays a certain active protection role.
Preferably, a sealing ring is arranged on the air hole.
The air hole is provided with a sealing ring to ensure the air tightness of the detection part and the fixed seat of the vehicle end electric connection device.
Preferably, the detection component further comprises a mounting housing having a mounting accommodating cavity recessed toward the inside of the mounting housing, the inflation element, the detection element and the control unit being accommodated in the mounting accommodating cavity;
the detection part is connected to the fixed seat through the mounting shell.
Through the setting of installation casing, each component encapsulation of determine part protects each component in the installation casing, and safe and reliable does not influence quick change connector structure, ensures simultaneously that determine part does not receive the influence of external environment such as water, dust, improves determine part's structural security.
Preferably, an air inlet of the inflation element is connected with an air inlet pipe, and the air inlet pipe extends out of the mounting shell;
and/or the presence of a gas in the gas,
the control unit comprises a signal output end which is used for being in communication connection with the vehicle-end controller or the external controller.
Make external gas fill into the closed cavity through the intake pipe is convenient effectual, in addition, the control unit still is equipped with signal output part, conveniently is connected with external control ware, and then realizes external control ware to the control of detecting element.
Preferably, the mounting shell is further provided with a via hole;
the air inlet pipe penetrates through the through hole and extends out of the mounting shell; and/or the signal output end is connected with a signal wire, and the signal wire penetrates through the through hole and extends out of the mounting shell to be in communication connection with the vehicle-end controller.
The intake pipe is connected with inflatable element, and the signal line is connected with control element, and the setting of via hole can play certain positioning action to the installation of the inside component of installation casing, and the charging element and control element's of being convenient for location installation also are convenient for intake pipe and signal line and external connection.
Preferably, the inflation element is a motor air pump.
In order to reduce the cost, the inflating element is a conventional motor air pump.
The positive progress effects of the invention are as follows: this application is for solving the easy defect that became invalid of leakproofness of the closed cavity behind battery end electric connection device and the cooperation of car end electric connection device, through to closed cavity aerate and monitor atmospheric pressure data, can be effective, initiative, the leakproofness of rapid judgement connector, further improves the security of driving a vehicle.
Drawings
Fig. 1 is a flowchart of a method for detecting airtightness of an electrical connector according to embodiment 1 of the present invention.
Fig. 2 is a flowchart of step 20 of the method for detecting the hermeticity of the electrical connector according to embodiment 2 of the present invention.
Fig. 3 is a flowchart of a method for detecting air tightness of an electrical connector according to embodiment 2 of the present invention.
Fig. 4 is a flowchart of step 20 of the method for detecting the hermeticity of the electrical connector according to embodiment 3 of the present invention.
Fig. 5 is a schematic structural diagram of an electrical connector according to embodiment 4 of the present invention.
Fig. 6 is a partially disassembled schematic structural diagram of the vehicle-end electrical connection device according to embodiment 4 of the present invention.
Fig. 7 is a schematic view of a partial internal structure of a vehicle-end electrical connection device according to embodiment 4 of the present invention.
Fig. 8 is a schematic view of an installation structure of the vehicle-end electrical connection device according to embodiment 4 of the present invention.
Detailed Description
The invention is further illustrated by the following examples, which are not intended to limit the scope of the invention.
Example 1
An air tightness detection method of an electric connector comprises a vehicle end electric connecting device and a battery end electric connecting device which are mutually matched to realize electric connection, wherein the vehicle end electric connecting device is provided with a circle of annular sealing ring, when the vehicle end electric connecting device and the battery end electric connecting device are matched to realize electric connection, the annular sealing ring is respectively connected with the matching ends of the vehicle end electric connecting device and the battery end electric connecting device to form a closed cavity, and the air tightness detection method is used for detecting whether the closed cavity leaks air or not, and comprises the following steps:
and 20, detecting the air pressure in the closed cavity, and judging whether the closed cavity leaks air or not according to the air pressure.
In this implementation, the leakproofness of the closed cavity behind battery end electric connection device and the cooperation of car end electric connection device is inefficacy easily, and this scheme is through aerifing the air and monitoring atmospheric pressure data to closed cavity, aerifing the inside atmospheric pressure of increase closed cavity through the initiative to the change of atmospheric pressure accelerates when leaking gas, so that can be effective, initiative, the leakproofness of rapid judgement connector, further improve the security of driving.
Example 2
The embodiment is further improved on the basis of embodiment 1, and as shown in fig. 2, step 20 specifically includes:
wherein, step 213 specifically includes:
2132, confirming that the sealed cavity is not air-leaked;
and 2133, confirming the air leakage of the closed cavity.
In this embodiment, after step 20, as shown in fig. 3, the method for detecting airtightness further includes:
and step 40, filling gas into the closed cavity to ensure that the air pressure in the closed cavity is kept within a preset air pressure range. It should be noted that steps 30 and 40 have no obvious sequence relationship, and can also be performed simultaneously.
In the embodiment, the real-time air pressure value is compared with the standard air pressure value to obtain a comparison result, whether the closed cavity leaks air is further judged based on the comparison result, the detection method is convenient, quick, direct and accurate, whether the comparison result is within a preset range is judged instead of being compared with a determined value, and misjudgment caused by the fact that the air pressure in the closed cavity is influenced due to bumping generated when a vehicle runs can be avoided. In addition, after detecting the air leakage of the closed cavity, a user is timely reminded through a warning signal, so that the electric connecting device can be timely maintained, the vehicle is prevented from breaking down in the subsequent wading process, the safety of driving is ensured, in addition, after the air leakage is detected, in order to avoid the driving safety caused by the fact that the vehicle cannot be timely maintained, the closed cavity can be further continuously filled with air, dry and clean air is continuously filled into the closed cavity, the positive pressure in the closed cavity is ensured, foreign matters such as humid air, dust, water and the like in rainy days are prevented from entering the connector cavity, and a certain active protection effect is achieved.
Example 3
This embodiment is a further improvement on the basis of embodiment 2, and as shown in fig. 4, another implementation manner of another step 20 is provided, which specifically includes:
wherein step 223 specifically includes:
2232, confirming that the sealed cavity is not air-leaked;
In this embodiment, the air pressure value in the sealed cavity is dynamically monitored, the comparison result is obtained according to the air pressure change value to determine the leakage amount, and whether the sealed cavity leaks air is further determined based on the comparison result to determine the sealing performance of the sealed cavity. And by judging whether the comparison result is in the preset range or not rather than comparing the comparison result with a determined value, the misjudgment caused by the influence of the bumping generated by the vehicle running on the air pressure in the closed cavity can be avoided.
Example 4
As shown in fig. 5, the vehicle-end electrical connection device 1 is provided with a ring of annular sealing ring 2, when the vehicle-end electrical connection device 1 and the battery-end electrical connection device 3 are matched to realize electrical connection, the annular sealing ring 2 is respectively connected with the mating ends of the vehicle-end electrical connection device 1 and the battery-end electrical connection device 3 to form a closed cavity, and the vehicle-end electrical connection device 1 comprises a detection part 4;
the detection part 4 is arranged on the vehicle end electric connection device 1 and is communicated with the closed cavity; specifically, the detection member 4 may be mounted on the outer side surface of the vehicle-end electrical connection device 1, so as not to be limited by the internal mounting space of the vehicle-end electrical connection device 1; of course, when there is a sufficient installation space inside the vehicle-end electrical connection device 1, the detection member 4 may be optionally installed inside the vehicle-end electrical connection device 1.
The detecting member 4 is used to implement the airtightness detecting method of the electrical connector according to any one of embodiments 1 to 3.
In the present embodiment, as shown in fig. 6 to 7, the detection part 4 includes an inflation element 41 and a detection element 42; the inflation element 41 is a motor air pump.
The gas charging element 41 comprises a gas inlet 411 and a gas outlet 412, the gas inlet 411 is communicated with the outside gas, and the gas outlet 412 is communicated with the closed cavity; the detection element 42 comprises an air pressure detection port 421, and the air pressure detection port 421 is communicated with the closed cavity;
the inflation element 41 is used for inflating the closed cavity, and the detection element 42 is used for detecting the air pressure in the closed cavity.
It should be noted that the detection component 4 includes an air charging element 41 and a detection element 42 that are matched with each other, the air charging element 41 sucks external air through an air inlet 411 and charges the air into the closed cavity through an air outlet 412, the air pressure inside the closed cavity is actively increased to accelerate the change of the air pressure during air leakage, then the detection element 42 detects the air pressure inside the closed cavity through an air pressure detection port 421 communicated with the closed cavity, and further the air pressure is monitored to detect the sealing performance of the closed cavity.
The detection means 4 further comprise a control unit 43;
the control unit 43 is connected with the control end of the inflation element 41 and is used for controlling the start and stop of the inflation element 41; and/or the control unit 43 is connected to the signal end of the detection element 42, and is configured to receive the air pressure data in the closed cavity detected by the detection element 42.
After receiving the air pressure data, the control unit 43 is further configured to determine whether the sealed cavity is air-leaking according to the air pressure data; meanwhile, the control unit 43 is also used for sending out a warning signal when the closed cavity is air-leaked; the control unit 43 is further configured to control the inflating element 41 to inflate the closed cavity with gas so as to ensure that the gas pressure in the closed cavity is kept within a preset gas pressure range.
It should be noted that, the control unit 43 analyzes whether the sealed cavity leaks air or not in time after acquiring the air pressure data, if so, the user is reminded in time through the warning signal so as to maintain the electric connection device in time, thereby preventing the vehicle from breaking down during subsequent wading, and ensuring the safety of driving, and in addition, after detecting the air leakage, in order to avoid the driving safety caused by the failure of maintenance in time, the control unit 43 further controls the inflation element 41 to continuously inflate the sealed cavity with air, so as to continuously inflate dry and clean air into the sealed cavity, thereby ensuring the positive pressure in the sealed cavity, and preventing the foreign matters such as humid air, dust, water and the like in rainy days from entering the cavity of the connector, so as to play a certain role of active protection.
As shown in fig. 8, the vehicle-end electrical connection device 1 further includes a fixing seat 5, two air holes 51 are formed in the fixing seat 5, and the two air holes 51 are respectively communicated with the air outlet 412 and the air pressure detection port 421. The air hole 51 is provided with a seal ring 52. The air hole 51 is provided with a sealing ring 52 to ensure the air tightness between the detection part 4 and the fixed seat 5 of the vehicle-end electric connection device 1. It should be noted that, the fixing seat 5 is arranged to ensure the fixed connection between the detecting component 4 and the vehicle end electric connecting device 1, and the correspondingly arranged air hole 51 is arranged to ensure the communication between the air inlet, the air outlet and the air pressure detecting port and the closed cavity, so as to ensure the normal matching between the structures.
Referring to fig. 6-7, the detection member 4 further includes a mounting housing 44, the mounting housing 44 having a mounting accommodating chamber recessed toward the inside of the mounting housing 44, the inflation element 41, the detection element 42, and the control unit 43 being accommodated in the mounting accommodating chamber; the detection member 4 is connected to the fixed base 5 through the mounting case 44. In particular, it can be arranged outside or inside the fixed seat 5.
The air inlet 411 of the inflation element 41 is connected with an air inlet pipe 45, and the air inlet pipe 45 extends out of the mounting shell 44;
it should be noted that, through the arrangement of the mounting housing 44, the components of the detecting component 4 are enclosed in the mounting housing 44, so as to protect the components, and the components are safe and reliable, and do not affect the quick-change connector structure, and at the same time, the detecting component 4 is ensured not to be affected by external environments such as water, dust, and the like, so as to improve the structural safety of the detecting component 4.
The mounting shell 44 is also provided with a via hole; the air inlet pipe 45 extends out of the mounting housing 44 through the through hole; the signal output end is connected with a signal wire 46, and the signal wire 46 passes through the through hole and extends out of the mounting shell 44 to be in communication connection with the vehicle end controller. The control unit 43 includes a signal output for communicating with a vehicle end controller or an external controller. The detection device is conveniently connected with an external controller, and then the external controller controls the detection part 4. The through hole can also play a certain positioning role in the installation of the inflation element 41 and the control element 43, for example, the air inlet pipe 45 is connected with the inflation element 41 through the through hole, and the position of the air inlet pipe 45 can position the installation position of the inflation element 41 in the installation shell 44 so as to facilitate the installation and fixation of the inflation element 41.
In this implementation, the leakproofness of the closed cavity behind battery end electric connection device and the cooperation of car end electric connection device is inefficacy easily, and this scheme is through charging into the air and monitoring atmospheric pressure data to closed cavity, can be effective, initiative, the leakproofness of rapid judgement connector, further improves the security of driving a vehicle.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.
Claims (14)
1. The utility model provides an airtight detection method of electric connector, electric connector is including car end electric connector and the battery end electric connector that mutually support to realize the electricity and connect, car end electric connector has a round ring seal, car end electric connector with when battery end electric connector cooperates the electricity and realizes the electricity and connect, ring seal connects car end electric connector with battery end electric connector's cooperation end respectively in order to form and seals the cavity, airtight detection method is used for detecting seal the cavity whether leak gas, its characterized in that includes:
filling a preset volume of gas into the closed cavity;
and detecting the air pressure in the closed cavity, and judging whether the closed cavity leaks air or not according to the air pressure.
2. The method for detecting an air tightness of an electrical connector according to claim 1, wherein the step of detecting the air pressure in the closed cavity and determining whether the air leakage occurs in the closed cavity according to the air pressure comprises:
detecting the air pressure in the closed cavity at a first moment to obtain a first air pressure value;
comparing the first air pressure value with a preset standard air pressure value to obtain a comparison result;
judging whether the closed cavity leaks air or not according to the comparison result;
alternatively, the first and second electrodes may be,
detecting the air pressure in the closed cavity at a first moment and a second moment respectively to obtain a first air pressure value and a second air pressure value;
comparing the first air pressure value with the second air pressure value to obtain a comparison result;
and judging whether the closed cavity leaks air or not according to the comparison result.
3. The method for detecting the air tightness of an electrical connector according to claim 2, wherein the step of determining whether the sealed cavity leaks air according to the comparison result specifically comprises:
and judging whether the comparison result is in a preset range, if so, not leaking gas from the closed cavity, and if not, leaking gas from the closed cavity.
4. The method for detecting the air-tightness of an electrical connector according to any one of claims 1 to 3, wherein after determining that the enclosed cavity is air-leaked, the method for detecting the air-tightness further comprises:
sending out a warning signal;
and/or the presence of a gas in the gas,
and filling gas into the closed cavity to ensure that the gas pressure in the closed cavity is kept within a preset gas pressure range.
5. A car end electric connection device is provided with a circle of annular sealing ring, and when the car end electric connection device is matched with a battery end electric connection device to realize electric connection, the annular sealing ring is respectively connected with the matching ends of the car end electric connection device and the battery end electric connection device to form a closed cavity;
the detection part is arranged on the vehicle end electric connection device and is communicated with the closed cavity;
the detection component is used for realizing the air tightness detection method of the electric connector in any one of claims 1-4.
6. The vehicle end electrical connection apparatus of claim 5, wherein the sensing member comprises an inflation element and a sensing element;
the inflatable element comprises an air inlet and an air outlet, the air inlet is communicated with external air, and the air outlet is communicated with the closed cavity;
the detection element comprises an air pressure detection port which is communicated with the closed cavity;
the inflation element is used for inflating the closed cavity, and the detection element is used for detecting air pressure in the closed cavity.
7. The vehicle end electrical connection device of claim 6, wherein the vehicle end electrical connection device comprises a fixed seat, and two air holes are formed in the fixed seat and respectively communicated with the air outlet and the air pressure detection port.
8. The vehicle end electrical connection apparatus of claim 6, wherein the detection component further comprises a control unit;
the control unit is connected with the control end of the inflatable element and used for controlling the start and stop of the inflatable element; and/or the control unit is connected with the signal end of the detection element and used for receiving the air pressure data in the closed cavity detected by the detection element.
9. The vehicle-end electrical connection device according to claim 8, wherein the control unit is further configured to determine whether the sealed cavity is air-leaked according to the air pressure data after receiving the air pressure data; and/or the presence of a gas in the gas,
and meanwhile, the control unit is also used for sending a warning signal when the closed cavity leaks air, and/or the control unit is also used for controlling the inflation element to inflate the air into the closed cavity so as to ensure that the air pressure in the closed cavity is kept within a preset air pressure range.
10. The vehicle end electrical connection of claim 7, wherein a seal ring is disposed on the air vent.
11. The vehicle-end electrical connection apparatus of claim 8, wherein the detection member further comprises a mounting housing having a mounting receiving cavity recessed into an interior of the mounting housing, the inflation element, the detection element, and the control unit being received in the mounting receiving cavity;
the detection part is connected to the fixed seat through the mounting shell.
12. The vehicle-end electrical connection apparatus of claim 11, wherein an air inlet of the inflatable element is connected to an air inlet tube, the air inlet tube extending to an exterior of the mounting housing;
and/or the presence of a gas in the gas,
the control unit comprises a signal output end which is used for being in communication connection with the vehicle-end controller or the external controller.
13. The vehicle end electrical connection apparatus of claim 12, wherein the mounting housing further defines a via;
the air inlet pipe penetrates through the through hole and extends out of the mounting shell; and/or the signal output end is connected with a signal wire, and the signal wire penetrates through the through hole and extends out of the mounting shell to be in communication connection with the vehicle-end controller.
14. The vehicle end electrical connection apparatus of claim 6, wherein the inflation element is an electric motor pump.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011061533.2A CN114323484A (en) | 2020-09-30 | 2020-09-30 | Air tightness detection method of electric connector and vehicle-end electric connecting device |
| PCT/CN2021/121686 WO2022068873A1 (en) | 2020-09-30 | 2021-09-29 | Air tightness test method for electrical connector and vehicle-end electrical connection device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011061533.2A CN114323484A (en) | 2020-09-30 | 2020-09-30 | Air tightness detection method of electric connector and vehicle-end electric connecting device |
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| CN114323484A true CN114323484A (en) | 2022-04-12 |
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| CN (1) | CN114323484A (en) |
| WO (1) | WO2022068873A1 (en) |
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|---|---|---|---|---|
| CN117168719A (en) * | 2023-09-05 | 2023-12-05 | 嘉兴德鑫电子科技有限公司 | Method and system for detecting air tightness leakage of terminal block for new energy automobile |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116465572B (en) * | 2023-06-20 | 2023-12-08 | 宁德时代新能源科技股份有限公司 | Battery detection equipment and method and device for detecting battery |
| CN117870986B (en) * | 2024-03-12 | 2024-05-31 | 浙江明禾新能科技股份有限公司 | Air tightness tester |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US4799377A (en) * | 1988-02-05 | 1989-01-24 | Dow Corning Corporation | Detector for leaks or orifices |
| CN111384315A (en) * | 2018-12-29 | 2020-07-07 | 奥动新能源汽车科技有限公司 | Quick-change connector for electric connector and battery pack of electric vehicle |
| CN111509321B (en) * | 2019-01-30 | 2021-07-20 | 北京新能源汽车股份有限公司 | Battery pack system, battery pack air tightness detection method and electric automobile |
-
2020
- 2020-09-30 CN CN202011061533.2A patent/CN114323484A/en active Pending
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117168719A (en) * | 2023-09-05 | 2023-12-05 | 嘉兴德鑫电子科技有限公司 | Method and system for detecting air tightness leakage of terminal block for new energy automobile |
| CN117168719B (en) * | 2023-09-05 | 2024-04-05 | 嘉兴德鑫电子科技有限公司 | Method and system for detecting air tightness leakage of terminal block for new energy automobile |
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| WO2022068873A1 (en) | 2022-04-07 |
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