CN105352677A - Sealing testing apparatus of power battery pack - Google Patents
Sealing testing apparatus of power battery pack Download PDFInfo
- Publication number
- CN105352677A CN105352677A CN201510796255.8A CN201510796255A CN105352677A CN 105352677 A CN105352677 A CN 105352677A CN 201510796255 A CN201510796255 A CN 201510796255A CN 105352677 A CN105352677 A CN 105352677A
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- Prior art keywords
- power battery
- battery pack
- tightness
- testing
- air
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- 238000012360 testing method Methods 0.000 title claims abstract description 61
- 238000007789 sealing Methods 0.000 title claims abstract description 34
- 238000001514 detection method Methods 0.000 claims abstract description 34
- 229910000838 Al alloy Inorganic materials 0.000 claims description 7
- 210000003437 trachea Anatomy 0.000 claims description 7
- 238000009713 electroplating Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 description 11
- 238000010586 diagram Methods 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000012857 repacking Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
-
- 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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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention discloses a sealing testing apparatus of a power battery pack. The testing apparatus comprises a gas source, an air tightness detection device, first plugging devices and second sealing devices. The gas source, the air tightness detection device, and a power battery pack are successively connected. Compressed air generated by the gas source enters the air tightness detection device through an air pipe and then enters the power battery pack through the first plugging devices. Preset time of the sealing testing apparatus is set and the air tightness detection device is started; and the air tightness detection device works within the preset time to obtain a pressure drop value or leakage rate of the power battery pack within the preset time. And then the obtained pressure drop value or leakage rate is compared with a preset standard value; when the obtained pressure drop value or leakage rate is lower than or equal to the set standard value, the sealing performance of the power battery pack meets the requirement; and if the obtained pressure drop value or leakage rate is higher than the set standard value, the sealing performance of the power battery pack does not meet the requirement.
Description
Technical Field
The invention relates to the technical field of automobiles, in particular to a device for testing the sealing performance of a power battery pack.
Background
In order to relieve the pollution pressure of urban automobile exhaust, electric automobiles gradually become a new favorite of cities. The electric automobile is a vehicle which takes a vehicle-mounted power supply as power and drives wheels to run by using a motor. In order to ensure the driving capability of the electric automobile, the requirement of the electric automobile on the battery can be high, for example, in order to ensure the service life and the safety performance of the electric automobile, the tightness of the power battery pack needs to be improved, and the tightness of the power battery pack needs to meet the requirement of IP57 or even IP 67.
In the prior art, the tightness detection means of the power battery pack comprises 2 types: firstly, testing according to corresponding testing methods such as IP57 or IP67 in GB 4208-2008; and secondly, the power battery pack is disassembled, and the components which can influence the sealing performance of the power battery pack are independently tested according to the national standard requirements, but the two methods have the problem of complex operation, so that the sealing performance testing efficiency of the power battery pack is low.
Therefore, how to reduce the complexity of the operation of the tightness test of the power battery pack and improve the efficiency of the tightness test of the power battery pack becomes a technical problem to be solved urgently by those skilled in the art.
Disclosure of Invention
In view of this, the invention provides a device for testing the sealing performance of a power battery pack, so as to reduce the complexity of the operation of testing the sealing performance of the power battery pack and improve the efficiency of testing the sealing performance of the power battery pack.
In order to achieve the purpose, the invention provides the following technical scheme:
a power battery package leakproofness testing arrangement includes:
a gas source capable of providing a pressurized gas at a stable pressure;
the air tightness detection device is connected with the air source through a first air pipe and can detect the tightness of the power battery pack, and the air tightness detection device obtains a pressure drop value or a leakage rate within a preset time;
the first blocking device is communicated with the air tightness detection equipment through a second air pipe, the first blocking device is connected with a first plug connector of the power battery pack, and the second air pipe is communicated with the first plug connector;
and the second plugging devices are used for plugging the power battery pack except the first plug connectors, and the number of the second plugging devices is equal to that of the other plug connectors except the first plug connectors.
Preferably, in above-mentioned power battery package leakproofness testing arrangement, first plugging device including can with the fixing base that first plug connector is connected with can with fixing base complex sliding seat, the fixing base cover is established the outer wall of first plug connector, the fixing base with first plug connector interference fit, the sliding seat with the fixing base passes through the hasp and connects, the sliding seat with second trachea intercommunication.
Preferably, in the device for testing the sealing performance of the power battery pack, a sealing ring is arranged on one surface of the fixed seat, which is matched with the movable seat.
Preferably, in the device for testing the sealing performance of the power battery pack, the fixed seat is an aluminum alloy fixed seat, the movable seat is an aluminum alloy movable seat, and the surfaces of the fixed seat and the movable seat are both subjected to electroplating treatment.
Preferably, in the device for testing the sealing performance of a power battery pack, the air source is a compressor.
Preferably, in the device for testing the sealing performance of the power battery pack, a valve is arranged on an air pipe which communicates the air source with the air tightness testing device.
Preferably, in the device for testing the sealing performance of a power battery pack, the second plugging device is a plug.
Preferably, in the device for testing the sealing performance of the power battery pack, the plug is a rubber plug.
Preferably, in the tightness testing device for a power battery pack, the first plugging device is connected with one first plug connector on the power battery pack or connected with the first plugging device and two first plug connectors on the power battery pack.
According to the technical scheme, the tightness testing device for the power battery pack comprises the air source, air tightness detecting equipment, a first plugging device and a second plugging device, wherein the air source is connected with the air tightness detecting equipment, the air tightness detecting equipment is connected with a first plug connector of the power battery pack through the first plugging device, the air tightness detecting equipment and the power battery are sealed through the first plugging device, the second plugging device can plug other plug connectors except the first plug connector on the power battery pack, and the other parts of the power battery are sealed through the second plug connector, so that the power battery pack meets the requirement of tightness. In the process of testing the tightness of the power battery pack, an air source, air tightness detection equipment and the power battery pack are sequentially connected, compressed air generated by the air source enters the air tightness detection equipment through an air pipe, then enters the power battery pack through a first plugging device, the preset time of the air tightness detection equipment is set, the air tightness detection equipment is started, the air tightness detection equipment obtains the pressure drop value or the leakage rate of the power battery pack within the preset time, finally, the obtained pressure drop value or the obtained leakage rate is compared with the set standard value, when the obtained pressure drop value or the obtained leakage rate is lower than or equal to the set standard value, the tightness of the power battery pack meets the requirements, and when the obtained pressure drop value or the obtained leakage rate is higher than the set standard value, the tightness of the power battery pack does not meet the requirements. The device that this scheme provided only needs to be connected power battery package leakproofness testing arrangement and power battery package, starts gas tightness check out test set, obtains data and carries out the contrast through gas tightness check out test set and can detect whether the leakproofness of power battery package meets the requirements, can reduce the complexity of power battery package leakproofness test operation for the test mode among the prior art, improves the efficiency of power battery package leakproofness test.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a device for testing the sealing performance of a power battery pack according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a front surface of a first plugging device according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a reverse side of a first plugging device according to an embodiment of the present invention.
1. The device comprises an air source, 2, a power battery pack, 3, air tightness detection equipment, 4, a first plugging device, 41, a fixed seat, 42, a movable seat, 5 and a second plugging device.
Detailed Description
The invention discloses a device for testing the sealing performance of a power battery pack, which is used for reducing the complexity of the sealing performance test operation of the power battery pack and improving the efficiency of the sealing performance test of the power battery pack.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to fig. 3, fig. 1 is a schematic structural diagram of a device for testing the sealing performance of a power battery pack according to an embodiment of the present invention; fig. 2 is a schematic structural diagram of a front surface of a first plugging device according to an embodiment of the present invention; fig. 3 is a schematic structural diagram of a reverse side of a first plugging device according to an embodiment of the present invention.
The invention discloses a device for testing the sealing performance of a power battery pack, which comprises an air source 1, power battery detection equipment 3, a first plugging device 4 and a second plugging device 5. Wherein,
the air source 1 can continuously provide compressed air with stable pressure for the air tightness detection equipment 3;
the air tightness detection device 3 is connected with the air source 1 through a first air pipe and can detect the air tightness of the power battery pack 2, the air tightness detection device 3 can obtain a pressure drop value or a leakage rate within a preset time, when the pressure drop value or the leakage rate is lower than or equal to a set standard value, the air tightness of the power battery pack meets the requirement, and when the pressure drop value or the leakage rate is higher than the set standard value, the air tightness of the power battery pack does not meet the requirement;
the first plugging device 4 is communicated with the air tightness detection equipment 3 through a second air pipe, the first plugging device 4 is connected with a first plug connector of the power battery pack 2, the second air pipe is communicated with the first plug connector, the first plugging device 4 can realize the gas circulation between the air tightness detection equipment 3 and the power battery pack 2, namely, the gas provided by the gas source 1 can enter the power battery pack 2 after passing through the air tightness detection equipment 3, and the first plugging device 4 can also prevent the gas in the power battery pack 2 from leaking;
a second plugging device 5 for plugging other plug connectors except first plug connector on power battery package 2, the number of second plugging device 5 equals with the number of other plug connectors except first plug connector, and second plugging device 5 can realize the leakproofness requirement to the power battery package, avoids the gas in power battery package 2 to leak through other plug connectors except first plug connector, influences gas tightness check out test set 3's detection effect.
The inspection process of the power battery pack tightness testing device provided by the scheme is as follows:
opening an air source 1, and enabling compressed air with stable pressure to sequentially enter a power battery pack through a first air pipe, an air tightness detection device 3 and a second air pipe; and setting the test time of the air tightness detection equipment 3, starting the air tightness detection equipment, obtaining the pressure drop value or the leakage rate of the power battery pack 2 after the air tightness detection equipment works for a preset time, and further analyzing the obtained result.
The procedure of the analysis was as follows:
when the pressure drop value or the leakage rate is lower than or equal to the set standard value, the sealing performance of the power battery pack meets the requirement, when the pressure drop value or the leakage rate is higher than the set standard value, the sealing performance of the power battery pack does not meet the requirement, and the power battery pack 2 which does not meet the requirement is maintained according to the result obtained by analysis.
According to the power battery pack tightness testing device, the power battery pack to be detected only needs to be connected with the power battery pack tightness testing device in the detection process, the power battery pack tightness testing device is started, the measured results are compared, and the sealing element on the power battery pack is not needed to be detached and sealed and detected independently, so that the power battery pack tightness testing operation complexity is reduced, and the power battery pack tightness testing efficiency is improved.
From the above, the power battery package leakproofness testing arrangement that this scheme provided can reduce the artifical intensity of labour that the staff detected power battery package leakproofness to a certain extent, and directly detect through gas tightness check out test set, has improved the degree of automation that power battery package leakproofness detected, and can improve the speed that power battery package leakproofness detected for the test mode before, has improved the detection efficiency of power battery package, has improved power battery's productivity to a certain extent.
In this scheme, first plugging device 4 includes fixing base 41 that can be connected with first plug connector and can with fixing base 41 complex sliding seat 42, the outer wall at first plug connector is established to fixing base 41 cover, fixing base 41 and first plug connector interference fit guarantee the cooperation intensity of first plugging device 4 and first plug connector, sliding seat 42 passes through the hasp with fixing base 41 and is connected, sliding seat 42 and the trachea intercommunication of second for can get into the power battery package through the tracheal gaseous through first plug connector of second. Fixing base 41 on first plug connector at first in-process of installation, then being connected sliding seat 42 and fixing base 41 through the hasp, can make things convenient for sliding seat 42 and 41 combination of fixing base and dismantlement through the hasp connection, and can guarantee sliding seat 42 and 41 cooperation intensity of fixing base, the connection between fixing base 41 and the sliding seat 42 not only can also can be through bolted connection or through the buckle connection through the hasp connection.
In order to avoid leakage at the matching end surfaces of the fixed seat 41 and the movable seat 42, it is preferable that a sealing ring is arranged at the matching surface of the fixed seat 41 and the movable seat 42, a hole matched with the first plug connector is correspondingly required to be arranged on the sealing ring, and the sealing ring is preferably a rubber sealing ring.
In order to ensure the use strength of the first plugging device 4, the fixing seat 41 is an aluminum alloy fixing seat, the movable seat 42 is an aluminum alloy movable seat, and the surfaces of the fixing seat 41 and the movable seat 42 are both treated by electroplating, so that the occurrence of rusting phenomenon in the use process is reduced. The production material of the fixed seat 41 and the movable seat 42 is not limited to aluminum alloy, and stainless steel, iron or high-strength plastic can be used. Two sets of first plugging devices 4 are required to be provided in the using process, one set is used, and the other set is standby.
Preferably, the air supply 1 that adopts in this scheme is the compressor, need regularly inspect air supply 1 in the in-process of using, removes oil and water operation to air supply 1 to guarantee its normal operating, prevent in the compressed air that it produced simultaneously to carry oil or water and cause the damage to gas tightness check out test set 3.
And a valve is arranged on an air pipe for communicating the air source 1 and the air tightness detection equipment 3 and can be opened and closed at any time. Need guarantee that first trachea and second trachea do not buckle and also do not block up in power battery package leakproofness testing arrangement's working process, guarantee that compressed air can get into power battery package through gas tightness check out test set smoothly, reduce the interference factor in the test procedure, improve the reliability of test result. The power battery package leakproofness testing arrangement that this scheme provided needs regularly to detect the leakproofness of first trachea, second trachea and valve, avoids influencing the measuring result because above-mentioned part leaks.
The second plugging device 5 that this scheme provided is the end cap, and the end cap can be for the plug connector through on the power battery package repacking obtain or according to structure, shape and the size of plug connector design alone of utmost point, can closely cooperate with the plug connector on the power battery package to have used repeatedly and peg graft convenient characteristics.
Preferably, the plug that uses in this scheme is the rubber plug, and the rubber plug can take place deformation along with the shape of plug connector, can guarantee sealed effect, can also improve its commonality.
The second plugging device can also adopt a metal plug, and preferably a rubber pad needs to be arranged on the metal plug. Two sets of the second plugging devices need to be arranged in the using process, one set is used, and the other set is standby.
The first plugging device 4 is connected with one first plug connector on the power battery pack 2 or connected with the first plugging device 4 and two first plug connectors on the power battery pack 2, and the first plugging device 4 is selectively provided with one first plugging device 4 or two first plugging devices 4 according to the shape and the internal gas flow condition of the power battery pack.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. The utility model provides a power battery wraps leakproofness testing arrangement which characterized in that includes:
a gas source (1), the gas source (1) being capable of providing compressed air at a stable pressure;
the air tightness detection device (3) is connected with the air source through a first air pipe and can detect the tightness of the power battery pack (2), and the air tightness detection device (3) obtains a pressure drop value or a leakage rate within a preset time;
the first plugging device (4) is communicated with the air tightness detection equipment (3) through a second air pipe, the first plugging device (4) is connected with a first plug connector of the power battery pack (2), and the second air pipe is communicated with the first plug connector;
and the second plugging device (5) is used for plugging the power battery pack (2) except the first plug connector, and the number of the second plugging devices (5) is equal to that of the other plug connectors except the first plug connector.
2. The power battery pack tightness testing device according to claim 1, characterized in that, the first plugging device (4) including can with fixing base (41) that first plug connector is connected and can with fixing base (41) complex sliding seat (42), fixing base (41) cover is established the outer wall of first plug connector, fixing base (41) with first plug connector interference fit, sliding seat (42) with fixing base (41) pass through the hasp connection, sliding seat (42) with second trachea intercommunication.
3. The device for testing the tightness of the power battery pack according to claim 2, wherein a sealing ring is arranged on one surface of the fixed seat (41) matched with the movable seat (42).
4. The device for testing the sealing performance of the power battery pack according to claim 2, wherein the fixed seat (41) is an aluminum alloy fixed seat, the movable seat (42) is an aluminum alloy movable seat, and the surfaces of the fixed seat (41) and the movable seat (42) are both subjected to electroplating treatment.
5. The power battery pack tightness testing device according to claim 1, characterized in that the air source (1) is a compressor.
6. The device for testing the tightness of the power battery pack according to claim 1, wherein a valve is arranged on an air pipe which communicates the air source (1) and the air tightness detection equipment (3).
7. The device for testing the tightness of the power battery pack according to claim 1, wherein the second plugging device (5) is a plug.
8. The device for testing the tightness of the power battery pack according to claim 7, wherein the plug is a rubber plug.
9. The device for testing the tightness of a power battery pack according to claim 1, characterized in that the first plugging device (4) is connected with one first plug connector on the power battery pack (2) or the first plugging device (4) is connected with two first plug connectors on the power battery pack (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510796255.8A CN105352677A (en) | 2015-11-18 | 2015-11-18 | Sealing testing apparatus of power battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510796255.8A CN105352677A (en) | 2015-11-18 | 2015-11-18 | Sealing testing apparatus of power battery pack |
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| CN105352677A true CN105352677A (en) | 2016-02-24 |
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| CN201510796255.8A Pending CN105352677A (en) | 2015-11-18 | 2015-11-18 | Sealing testing apparatus of power battery pack |
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| CN (1) | CN105352677A (en) |
Cited By (9)
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| CN106017805A (en) * | 2016-06-16 | 2016-10-12 | 重庆长安汽车股份有限公司 | Plugging tool for air tightness detection of battery pack |
| CN107402107A (en) * | 2016-05-20 | 2017-11-28 | 比亚迪股份有限公司 | For the device for detecting sealability of battery bag, method and battery bag |
| CN107894304A (en) * | 2017-09-29 | 2018-04-10 | 芜湖普威技研有限公司 | New energy battery bag air-tightness detection tool |
| JP2018084427A (en) * | 2016-11-21 | 2018-05-31 | トヨタ自動車株式会社 | Battery pack inspection method |
| CN108254137A (en) * | 2017-12-29 | 2018-07-06 | 福建渃博特自动化设备有限公司 | Battery case welding airtightness detection device and its detection method |
| CN108663169A (en) * | 2017-03-28 | 2018-10-16 | 长城汽车股份有限公司 | Airtight detecting apparatus and method |
| CN109521365A (en) * | 2018-12-04 | 2019-03-26 | 远东福斯特新能源江苏有限公司 | Power battery box body protective capacities detection device and its detection method |
| CN112345174A (en) * | 2020-10-30 | 2021-02-09 | 歌尔微电子有限公司 | Air tightness detection device and method |
| CN114112229A (en) * | 2020-08-31 | 2022-03-01 | 中国航发商用航空发动机有限责任公司 | Tightness detection device of gas turbine engine casing |
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| CN108254137A (en) * | 2017-12-29 | 2018-07-06 | 福建渃博特自动化设备有限公司 | Battery case welding airtightness detection device and its detection method |
| CN109521365A (en) * | 2018-12-04 | 2019-03-26 | 远东福斯特新能源江苏有限公司 | Power battery box body protective capacities detection device and its detection method |
| CN114112229A (en) * | 2020-08-31 | 2022-03-01 | 中国航发商用航空发动机有限责任公司 | Tightness detection device of gas turbine engine casing |
| CN112345174A (en) * | 2020-10-30 | 2021-02-09 | 歌尔微电子有限公司 | Air tightness detection device and method |
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Application publication date: 20160224 Assignee: Chongqing Changan New Energy Automotive Technology Co., Ltd. Assignor: Chongqing Changan Automobile Co., Ltd.|Chongqing Chang'an New Energy Automobile Co., Ltd. Contract record no.: 2018500000022 Denomination of invention: Sealing testing apparatus of power battery pack License type: Exclusive License Record date: 20181130 |
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