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Detection device for safety valve mechanism and inspection method for safety valve mechanism

A technology of detection device and inspection method, which is applied in the testing of machine/structural parts, measuring device, testing of mechanical parts, etc., can solve problems such as long time, and achieve the effect of shortening time

Active Publication Date: 2018-01-16
PANASONIC EV ENERGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in such Figure 10 In the shown safety valve mechanism, there is only one gas discharge port 110, so even if there are multiple safety valves 11, it is necessary to check the valve opening pressure of each safety valve 11
Therefore, in the above-mentioned inspection method, there is a problem that it takes a long time until the inspection is completed for all the safety valves 11 to be inspected.

Method used

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  • Detection device for safety valve mechanism and inspection method for safety valve mechanism
  • Detection device for safety valve mechanism and inspection method for safety valve mechanism
  • Detection device for safety valve mechanism and inspection method for safety valve mechanism

Examples

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no. 1 Embodiment approach

[0026] A first embodiment of a safety valve mechanism detection device and a safety valve mechanism inspection method according to the present invention will be described below. In this embodiment, the safety valve mechanism used in the detection device and inspection method is embodied as a safety valve mechanism with 6 safety valves and 1 gas discharge port.

[0027] First, the configuration of the battery module inspected in this embodiment will be described.

[0028] Such as figure 1 As shown, the battery module 10 includes: a case main body 13 having six battery slots 12 inside; and a cover 15 serving as a safety valve mechanism that seals the upper opening of the case main body 13 . An electrode plate group 14 is accommodated together with an electrolytic solution in the battery case 12 . The electrode plate group 14 is formed by laminating a plurality of positive electrode plates containing a positive electrode active material and a plurality of negative electrode pl...

no. 2 Embodiment approach

[0061] Next, follow Figure 8 with Figure 9 A second embodiment of the present invention will be described. The second embodiment is configured by modifying a part of the detection device of the first embodiment, and therefore the same parts are assigned the same reference numerals, and detailed description thereof will be omitted. In the second embodiment, the number of safety valves 11 to be inspected in one inspection is two (#1, #2).

[0062] Such as Figure 8 As shown, the gas supply path 32 has: a first gas supply path 32a provided with a gas supply part 31 and a pressure gauge 34; and a plurality of second gas supply paths 32b branched from the first gas supply path 32a. In the present embodiment, two second gas supply paths 32b are provided, and are branched between the pressure gauge 34 and the flow meter 33 of the first gas supply path 32a. Flow meters 33 are respectively provided in the second gas supply paths 32b. In the present embodiment, one flowmeter 33 i...

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Abstract

PROBLEM TO BE SOLVED: To provide an inspection device for a safety valve mechanism and an inspection method for a safety valve mechanism capable of shortening time required for an inspection.SOLUTION: An inspection device 30 for a safety valve mechanism, regarding a safety valve mechanism having a plurality of safety valves 11, a gas collecting part in which a gas is introduced via the plurality of safety valves 11 and a gas exhaust port 27 for exhausting the gas inside the gas collecting part to the outside, inspects a valve opening pressure of two or more safety valves 11 which become the inspection object in one-time inspection out of the plurality of safety valves 11. The inspection device 30 includes: a gas supply part 31 for supplying a gas; a gas supply passage 32 for connecting the gas supply part 31 and the safety valve 11 which becomes the inspection object; a pressure gauge 34 for detecting the pressure of the gas supplied to the safety valve 11 which becomes the inspection object; and a flowmeter 33 for detecting a flow rate of the gas supplied to the safety valve 11 which becomes the inspection object.

Description

technical field [0001] The invention relates to a detection device and a detection method of a safety valve mechanism provided in a battery module. Background technique [0002] A safety valve mechanism is provided in a battery module in which a plurality of battery containers are accommodated in a case, and the safety valve mechanism releases gas generated in the battery containers to the outside. As such a safety valve mechanism, there is a mechanism that includes a plurality of safety valves; a gas collection part that collects the gas discharged from the battery tank through the safety valve; and a discharge port that releases the gas in the gas collection part to the outside (for example, Refer to Patent Document 1). [0003] The safety valve opens when the internal pressure of the battery tank reaches a predetermined value. The discharge ports are not installed in the same number as the safety valves, and usually one discharge port is provided for multiple safety val...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M2/12
CPCG01L11/00G01M13/00H01M50/30Y02E60/10
Inventor 石川直路井上浩大村实辉小林宽之五十岚昭
Owner PANASONIC EV ENERGY CO LTD