Battery pack and battery-mounted device
A battery assembly and battery mounting technology, applied in battery pack components, batteries, electrical components, etc., can solve problems such as battery damage
Inactive Publication Date: 2009-09-02
PANASONIC CORP
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Problems solved by technology
[0006] For this reason, even when the combustible gas discharged from the battery is diffused in the case of the battery pack and released to the outside like the technology described in Patent Document 1, the combustible gas will be mixed with the case due to the space in the case. Oxygen in the air reacts and catches fire, and there is a danger of combustible gas burning in the entire casing and causing damage to multiple batteries
Furthermore, even when the flammable gas released from the battery is discharged to the outside using pipes like the technique described in Patent Document 2, once the flammable gas reacts with the air in the pipes to cause a fire, the pipes are damaged and the flammable gas leaks out. Into the case, the flammable gas will react with the oxygen in the air inside the case to catch fire, and there is a danger that the flammable gas will burn in the entire case and cause damage to multiple batteries
Method used
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no. 1 approach
[0062] Examples of the battery pack according to the first embodiment of the present invention will be described.
Embodiment 1
[0076] Such as figure 1 , figure 2 As shown, the batteries 3 are arranged in the casing 2 without gaps, and protruding fillers 4 are provided in the battery storage part 21 and the battery assembly cover 22 to make the space between the batteries 3 and the inner wall of the casing 2 reduce. The volume of the internal space of the housing 2 at this time was 15 cc. Furthermore, the opening 23 is exposed to the outside without using the pressure valve 5 .
Embodiment 2
[0078] Such as Figure 6 As shown in (A) and (B), batteries 3 are arranged at a distance t of 5 mm, and a stainless steel plate is used as the filler 4 arranged between the batteries 3. The battery pack of Example 2. Furthermore, the opening 23 is exposed to the outside without using the pressure valve 5 .
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Abstract
The present invention provides a battery pack comprising a battery with a possibility of discharging a gas in an abnormal state, a case containing the battery, and an oxygen reducing section for reducing the amount of oxygen within the case.
Description
technical field [0001] The present invention relates to a battery pack and a battery-mounted device that house a battery that may release gas when abnormal. Background technique [0002] In recent years, with the diversification of electronic equipment, batteries or battery packs with high capacity, high voltage, high output and high safety are required. In particular, in order to provide batteries or battery packs with high safety, it is known to equip batteries or battery packs with various protection devices, such as PTC (Positive Temperature Coefficient) or thermal fuse (fuse) for preventing temperature rise, and There is a protection circuit that senses the internal pressure of the battery to cut off the current, etc. Furthermore, there is also known a technique in which a control circuit for controlling charge and discharge of the battery so as not to cause the battery to become abnormal is arranged in the battery pack. [0003] However, even with a protective device...
Claims
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IPC IPC(8): H01M2/10H01M50/213H01M50/229H01M50/231H01M50/28H01M50/282H01M50/289H01M50/35
CPCY02E60/12H01M2200/10H01M2/1094H01M2/1072H01M2/16H01M2200/20H01M10/0525H01M2/12H01M2/105H01M2/1061H01M2/127H01M10/52Y02T10/7011H01M2/1252Y02E60/10H01M50/213H01M50/30H01M50/383H01M50/394H01M50/24H01M50/35H01M50/229H01M50/282H01M50/231H01M50/28H01M50/289
Inventor 平川靖西野肇高村侯志
Owner PANASONIC CORP