CN209745551U - Rubber cap type safety valve detection device for electric power-assisted vehicle - Google Patents
Rubber cap type safety valve detection device for electric power-assisted vehicle Download PDFInfo
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- CN209745551U CN209745551U CN201920495351.2U CN201920495351U CN209745551U CN 209745551 U CN209745551 U CN 209745551U CN 201920495351 U CN201920495351 U CN 201920495351U CN 209745551 U CN209745551 U CN 209745551U
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Abstract
The utility model discloses an electronic helping hand is rubber cap formula relief valve detection device for car, including the base, be equipped with on the base that positive limit tolerance detects position, central value and detects position, negative pole limit tolerance and detect position and air inlet, the air inlet with respectively detect a one-to-one intercommunication. The utility model discloses simple structure, low cost, convenient operation can cover the open and close valve numerical value in the test battery cover valve opening tolerance size, accords with the rubber cap formula relief valve in the actual production in service behavior, reduces false retrieval and false positive rate, improves rubber cap formula relief valve and detects the accuracy, reduces the battery inefficacy problem because of rubber cap formula relief valve brings.
Description
Technical Field
The utility model relates to a battery detection device, more specifically say, it relates to an electronic helping hand is with gluey cap formula relief valve detection device.
Background
Since the appearance of the lead-acid storage battery as a chemical energy source, great convenience is brought to production and life of people. With the economic development and social progress, the environmental protection is increasingly keen, in each application field, the valve-controlled sealed lead-acid storage battery is gradually replacing the traditional open type lead-acid storage battery, at present, the domestic lead-acid storage battery for the electric power-assisted vehicle is a maintenance-free valve-controlled lead-acid storage battery, and acid and water are not needed to be added in the whole service life. The rubber cap type safety valve used for the valve-controlled sealed lead-acid storage battery mainly has the following functions: in the later stage of charging, when the oxygen produced by anode of the cell and hydrogen produced by cathode of the cell are too large to be combined, the internal pressure of the cell can be raised, when the pressure in the cell is raised to a specified value, the rubber cap type safety valve can be automatically opened to discharge gas, and when the internal pressure is reduced to a certain value after gas is discharged, the rubber cap type safety valve can be automatically closed.
At present, enterprises fully realize that the drying of electrolyte is an important reason of the end of the service life of products, so that the loss period of the electrolyte is usually prolonged by increasing the acid amount in the production process, and the selection and the stocking inspection of the rubber cap type safety valve are not strictly controlled. As is well known, in the actual use process, a rubber cap type safety valve made of ethylene propylene diene monomer rubber is gradually aged under the acidic high-temperature environmental condition, and the size and the matching precision with a battery cover are also changed, so that the following two situations may be caused: firstly, the open valve pressure is too high, and if the open valve pressure meets the unstable charging current condition, the hidden dangers of thermal runaway, battery deformation, cracking and even explosion exist; and secondly, the valve is normally opened, namely the rubber cap type safety valve cannot play a valve control role due to aging deformation or mismatch with the liquid injection hole and the like, so that the oxygen recombination capacity of the negative electrode is greatly reduced, and severe water loss and drying and performance failure are caused.
the method for detecting the rubber cap type safety valve in the electric vehicle battery industry at present comprises the following steps: through the selection of a large number of battery covers, a valve nozzle closest to the size of the tolerance center value is determined to be used as a standard hole to test the pressure of an opening and closing valve of the rubber cap type safety valve, and a test platform is a complete battery cover, occupies space when placed, is inconvenient to operate, is very troublesome to connect an air source, frequently generates an air leakage phenomenon, and can generate adverse effects on a detection result. The battery for the electric power-assisted vehicle is generally a group of 4 batteries, and a single battery is provided with 6 rubber cap type safety valves, and if one rubber cap type safety valve in the whole group of batteries has a problem in performance, the single battery is lagged behind, so that the whole group of batteries is failed, and great economic loss is brought to a company. The analysis of the returned battery anatomy and the failure mode thereof finds that a great part of the cause of battery failure is the occurrence of problems of the rubber cap type safety valve, so that the opening and closing consistency of the rubber cap type safety valve of the storage battery has great influence on the service life of the battery, and the rubber cap type safety valve is strictly controlled and checked in quality, so that the economic loss caused by the reasons can be effectively avoided, and finally, a higher-quality product is produced for customers. In order to accurately detect the performance of the rubber cap type safety valve, a detection device and a corresponding detection method which can accurately simulate the working condition and are convenient to use and easy to operate are needed. The utility model discloses a battery safety valve test equipment is exclusively used in 2018 5 month 29, which comprises a base plate, the central authorities at bottom plate top install the fixing base, the joint has battery body in the recess at fixing base top, the relief valve is installed at battery body's top, the slide rail is all installed to the left and right sides at fixing base top, the top slidable mounting of slide rail has the slide, first bolt is installed to the bottom screw thread of slide, the top welding of slide has the clamping, the equal threaded mounting in both sides has the second bolt around the clamping, telescopic cylinder is all installed to the left and right sides at bottom plate top, telescopic cylinder's top is installed the roof. This battery safety valve test equipment through setting up tensile test mechanism and pressure test mechanism, is in the same place tensile test and pressure test integration, has reduced workman's the amount of labour, has improved detection efficiency, makes the more smooth that the test goes on to this test equipment, test convenience, swift, easy operation. But the main effort that rubber cap formula relief valve receives after the installation on the battery lid is gas pressure, and gaseous pressure direction to rubber cap formula relief valve exists in the axial and upwards, and this utility model uses spring force to simulate gas pressure, and its power point of action is different from actual conditions, and this utility model must use the battery entity of assembly relief valve to do the sample moreover, and it is relatively more to detect required equipment, and the structure is complicated relatively.
SUMMERY OF THE UTILITY MODEL
The method that present electric motor car battery industry detected rubber cap formula relief valve lacks detection device accurate, convenient to use, leads to detecting operation inconvenience, and detection error is great, for overcoming these defects, the utility model provides a convenient operation detects accurate rubber cap formula relief valve detection device for electric bicycle to and this detection device's detection method.
The technical scheme of the utility model is that: the utility model provides an electronic cap formula relief valve detection device for moped, includes the base, is equipped with positive limit tolerance on the base and detects position, central value and detect position, negative pole limit tolerance and detect position and air inlet, and the air inlet communicates with each detection position one-to-one. The valve nozzle processing for installing the rubber cap type safety valve on the battery cover allows a tolerance range, however, the existing detection method of the rubber cap type safety valve for the electric power-assisted vehicle directly selects the valve nozzle closest to the size of the tolerance center value as a detection reference, and examines the extracted rubber cap type safety valve sample according to the detection reference. This can lead to false detection and missed detection: when a rubber cap type safety valve sample is smoothly matched on a central value valve nozzle, but is arranged on a positive limit tolerance value valve nozzle and a negative limit tolerance value valve nozzle, the resistance is larger or smaller, so that the measured opening pressure value is larger or smaller, and the unqualified product is finally judged to be qualified. The detection device is provided with a positive limit tolerance detection position, a central value detection position and a negative limit tolerance detection position according to the actual processing tolerance allowable range of the valve nozzle of the rubber cap type safety valve of the battery cover, and each extracted rubber cap type safety valve sample is detected by the three detection positions during detection, so that defective products can be prevented from leaking a network, and a more objective, comprehensive and true detection result can be obtained. This device low in manufacturing cost is simple and easy accurate, can improve the uniformity of using rubber cap formula relief valve.
Preferably, the positive limit tolerance detection position, the central value detection position and the negative limit tolerance detection position are positioned at the top of the base, and the air inlet is positioned at the bottom of the base. The positive limit tolerance detection position, the central value detection position and the negative limit tolerance detection position are positioned at the top of the base, so that a sample can be conveniently placed according to a normal operation mode. The air inlet is located the base bottom, and the trachea is walked the line and can not be influenced normal operation.
Preferably, the positive limit tolerance detection position, the central value detection position and the negative limit tolerance detection position are all lower than the top surface of the base. The rubber cap type safety valve nozzle on the battery cover is also sunk in the battery cover, so that the embedded detection position is closest to the real working condition.
preferably, the bottom of the base is provided with a convex air inlet nozzle, and the air inlet is arranged at the end part of the air inlet nozzle. The real battery cover is not provided with a convex air inlet nozzle, and an air source for pushing the rubber cap type safety valve under the real working condition comes from gas generated or thermally expanded when the battery works. It is difficult to maintain a stable supply and conduction of gas using a battery cover as the detection platform. The device can conveniently take over the air through the convex air inlet nozzle to obtain a stable air source.
Preferably, the air inlet nozzle is in a circular truncated cone shape. The tapered air inlet nozzle can be conveniently inserted with an air pipe and ensures sealing.
Alternatively, the nozzle is cylindrical. The cylindrical air inlet nozzle is convenient to process and can be sealed by interference fit with the air pipe.
Preferably, a threaded connection structure is arranged between the air inlet nozzle and the base. The air inlet nozzle is in threaded connection with the base, so that the structure is simple and the connection is reliable.
The utility model has the advantages that:
The detection accuracy of the rubber cap type safety valve is improved, and the control of the problem of battery failure is facilitated. The utility model discloses can cover the open and close valve numerical value in the test battery cover valve mouth tolerance dimension, glue cap formula relief valve in the coincidence actual production in service behavior, reduce the false retrieval and the false positive rate, improve and glue cap formula relief valve and detect the accuracy, reduce the battery inefficacy problem because of gluing cap formula relief valve and bring.
simple structure and low cost. This electronic automobile-used rubber cap formula relief valve detection device of helping hand is simple and practical, and the preparation is convenient, can effectively solve the actual problem with less input.
The operation is convenient. This electronic automobile-used rubber cap formula relief valve detection device of helping hand exists certain difference with battery actual structure, but this detection device has adopted reasonable atmospheric pressure supply mode under the prerequisite that can simulate the rubber cap formula relief valve operating mode of battery actual work in-process, makes things convenient for the air supply to connect.
Drawings
Fig. 1 is a schematic top view of the present invention;
Fig. 2 is a front view of the present invention;
Fig. 3 is a side view of the present invention.
In the figure, 1-base, 2-positive limit tolerance detection position, 3-central value detection position, 4-negative limit tolerance detection position, 5-air inlet nozzle and 6-air guide groove.
Detailed Description
The present invention will be further described with reference to the following detailed description of the embodiments.
Example 1:
As shown in fig. 1, 2 and 3, the rubber cap type safety valve detection device for the electric power-assisted vehicle comprises a base 1, wherein a positive limit tolerance detection position 2, a central value detection position 3, a negative limit tolerance detection position 4 and three convex air inlet nozzles 5 are arranged on the base 1, the air inlet nozzles 5 are in a round table shape, and the air inlet nozzles 5 are in threaded connection with the base 1. The positive limit tolerance detection position 2, the central value detection position 3 and the negative limit tolerance detection position 4 are located at the top of the base 1, the air inlet nozzle 5 is located at the bottom of the base 1, the end part of the air inlet nozzle 5 is provided with an air inlet, and the three air inlets are communicated with the three detection positions in a one-to-one correspondence manner. The positive limit tolerance detection position 2, the central value detection position 3 and the negative limit tolerance detection position 4 are of sunken structures, namely the detection positions are concave holes, the whole body is lower than the top surface of the base 1, and the centers of the concave holes are valve nozzles which are raised but also lower than the top surface of the base 1 and used for sleeving and buckling rubber cap type safety valve samples. The top surface of the base 1 is also provided with an air guide groove 5, and the positive limit tolerance detection position 2, the central value detection position 3 and the negative limit tolerance detection position 4 are connected in series through the air guide groove 6. For the real simulation actual product, this detection device also installs the cover plate additional above gluey cap formula relief valve like actual battery product when testing for prevent to glue cap formula relief valve and receive jump off-position behind the strong air current impact, air guide groove 5 guarantees that the cover plate still remains the exhaust passage with external intercommunication when detecting the position, and air guide groove 5 degree of depth is 1mm, detects like this when gluey cap formula relief valve sample open valve exhaust back, and air guide groove 5 just in time discharges the gas.
when the rubber cap type safety valve detection device for the electric power-assisted vehicle is used for detection, the three air inlets are respectively connected with the air pipes, each air pipe is connected with the barometer, the three air pipes are converged on the four-way connector, the four-way connector is connected to the air source, and the air source is a plant public engineering compressed air pipeline. Randomly taking three samples from the rubber cap type safety valve of the batch to be detected, respectively marking the samples as A, B, C, placing the samples on a detection position according to the pairing relation that A corresponds to a positive limit tolerance detection position 2, B corresponds to a central value detection position 3, and C corresponds to a negative limit tolerance detection position 4, ventilating and reading the pressure values of the barometer when opening and closing the valve; exchanging the positions of the three samples, placing each sample on a detection position according to the matching relation that C corresponds to a positive limit tolerance detection position 2, A corresponds to a central value detection position 3, and B corresponds to a negative limit tolerance detection position 4, ventilating and reading the pressure values of the barometer when the valve is opened and closed; replacing the three sample positions again, placing each sample on a detection position according to the matching relation of B corresponding to the positive limit tolerance detection position 2, C corresponding to the central value detection position 3 and A corresponding to the negative limit tolerance detection position 4, ventilating and reading the pressure values of the barometer when the valve is opened and closed; and finally, judging whether the batch of rubber cap type safety valves to be inspected is qualified, taking the valve opening pressure of 30-45 kPa and the valve closing pressure which is more than or equal to 20kPa as the technical standard of qualification judgment, and judging that the batch of rubber cap type safety valves are qualified if three tests all accord with the technical standard. After the rubber cap type safety valve is installed on the detection position every time, a transparent glass cover plate needs to be additionally installed above the detection position. During detection, water is filled into the concave hole at the detection position, the water level is lower than the top end of the valve nozzle, and the rubber cap type safety valve is determined to be in an open valve state when water bubbles emerge from the periphery of the concave hole after ventilation and pressurization; then slowly releasing the pressure, and determining that the rubber cap type safety valve is in a valve-closed state when no water bubbles emerge.
Example 2:
The intake nozzle 5 is cylindrical. The air source is an independent air compression pump. The rest is the same as example 1.
Claims (7)
1. The utility model provides an electronic cap formula relief valve detection device for moped, characterized by includes base (1), is equipped with positive limit tolerance on base (1) and detects position (2), central value and detect position (3), negative pole limit tolerance and detect position (4) and air inlet, and the air inlet communicates with each detection position one-to-one.
2. the rubber cap type safety valve detection device for the electric bicycle according to claim 1, wherein the positive limit tolerance detection position (2), the center value detection position (3) and the negative limit tolerance detection position (4) are positioned at the top of the base (1), and the air inlet is positioned at the bottom of the base (1).
3. The rubber cap type safety valve detection device for the electric bicycle according to claim 1, wherein the positive limit tolerance detection position (2), the central value detection position (3) and the negative limit tolerance detection position (4) are all lower than the top surface of the base (1).
4. The rubber cap type safety valve detection device for the electric power assisted vehicle as claimed in claim 1, 2 or 3, wherein the bottom of the base (1) is provided with a convex air inlet nozzle (5), and the air inlet is arranged at the end part of the air inlet nozzle (5).
5. The apparatus as claimed in claim 4, wherein the air inlet nozzle (5) is formed in a truncated cone shape.
6. The apparatus as claimed in claim 4, wherein the air inlet nozzle (5) is cylindrical.
7. The rubber cap type safety valve detection device for the electric bicycle according to claim 4, wherein a threaded connection structure is formed between the air inlet nozzle (5) and the base (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920495351.2U CN209745551U (en) | 2019-04-12 | 2019-04-12 | Rubber cap type safety valve detection device for electric power-assisted vehicle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920495351.2U CN209745551U (en) | 2019-04-12 | 2019-04-12 | Rubber cap type safety valve detection device for electric power-assisted vehicle |
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| CN209745551U true CN209745551U (en) | 2019-12-06 |
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| CN201920495351.2U Active CN209745551U (en) | 2019-04-12 | 2019-04-12 | Rubber cap type safety valve detection device for electric power-assisted vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110057571A (en) * | 2019-04-12 | 2019-07-26 | 超威电源有限公司 | A kind of detection device and method of electric boosted automobile-used Capsule formula safety valve |
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2019
- 2019-04-12 CN CN201920495351.2U patent/CN209745551U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110057571A (en) * | 2019-04-12 | 2019-07-26 | 超威电源有限公司 | A kind of detection device and method of electric boosted automobile-used Capsule formula safety valve |
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Address after: 313100 Zhejiang city of Huzhou province Changxing County pheasant emerging urban industrial park Patentee after: Chaowei Power Group Co., Ltd Address before: 313100 Zhejiang city of Huzhou province Changxing County pheasant emerging urban industrial park Patentee before: Chilwee Power Supply Co., Ltd. |