Battery pack, battery-mounted device and connection structure for battery pack

A technology for battery assembly and battery loading, which is applied to battery pack components, small-sized batteries/battery packs, batteries, etc., and can solve problems such as damage to battery packs, damage expansion, etc.

Active Publication Date: 2009-09-02
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is a problem that other batteries also start to overheat out of control, and the entire battery pack is damaged, and the damage expands.

Method used

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  • Battery pack, battery-mounted device and connection structure for battery pack
  • Battery pack, battery-mounted device and connection structure for battery pack
  • Battery pack, battery-mounted device and connection structure for battery pack

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 2

[0064] The battery pack 12 in the second embodiment is different from the battery packs in the above-mentioned embodiments in that it includes a connecting pipe portion 12H, a gas cooling portion 12L, and a connecting portion 12P as exhaust ducts. In other words, the spark trap 12M and the exhaust port 12Y are installed on the battery-mounted device side, that is, on the main body side of the electric bicycle 14 as an external path. -

[0065] That is, by mounting the battery pack 12 in the electric bicycle 14, the exhaust duct (connection portion 12P) on the battery pack 12 side and the external path (gas cooling portion 12L) on the electric bicycle 14 side are joined at the junction point P2 . Gas generated during abnormality is released to the bottom side (below) of the electric bicycle 14 opposite to the side (upper) on the passenger side of the electric bicycle 14 via the gas cooling portion 12L on the battery pack 12 side and the joint portion P2.

[0066] Next, Embodi...

Embodiment 1A

[0083] Will figure 1 The illustrated battery pack 1D and exhaust duct 1C are housed inside the battery packs 1A, 1B, and the outer peripheries of the battery packs 1A, 1B are welded. At this time, for the completed battery pack, set the maximum charging current to 3A and the charging termination current to 0.1A, which can usually be charged to 12.6V, but the overcharge protection circuit of the bypass battery pack and the current of the battery Blocking (CID), it can be charged to 13.5V with constant current and constant voltage. Such a battery pack was referred to as the battery pack of Example 1A.

Embodiment 1B

[0085] A porous ceramic plate with a thickness of 1 mm (honeycomb ceramics for industrial use, ceramichoneycomb; manufactured by Nippon Baruko Co., Ltd.) was pasted inside the spark trap 1M. The arrangement position of the porous ceramic plate is the opposite wall to the wall connected to the communication pipe 1N. Except for this, a battery pack was produced in the same manner as in Example 1A, and it was used as a battery pack in Example 1B.

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Abstract

Disclosed is a battery pack securing safety by preventing a battery contained in the battery pack from coming into a burning state even when the battery discharges a high-temperature gas in an abnormal state. Specifically disclosed is a battery pack having an exhaust duct (1C) for flowing a gas discharged from a battery, wherein the temperature of the gas is decreased in the exhaust duct (1C) and then the gas is discharged to the outside. The flow channel area of the exhaust duct (1C) is set at not less than 0.5 mm<2> and not more than 15 mm<2> per 1 Ah of the battery capacity. The exhaust duct (1C) is provided with a gas cooling portion (1L) and a spark trapping portion (1M).

Description

technical field [0001] The present invention relates to a battery pack capable of ensuring safety without emitting flames or smoke to the outside even if an abnormality occurs in the battery. 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, as a device for providing a safe battery or battery pack, the battery is generally equipped with a PTC (Positive Temperature Coefficient, positive temperature coefficient) or a thermal fuse (fuse) to prevent the battery temperature from rising, and to sense the inside of the battery. Pressure to cut off the current protection device, etc. Furthermore, a safety circuit is installed in the battery pack to control the battery so that it does not become abnormal. [0003] However, even with conventional protective devices, if an abnormality occurs inside the battery, high-tempe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/10H01M50/503H01M50/516H01M50/548H01M50/559H01M50/574
CPCH01M2/30Y02E60/12H01M2/105H01M2/12H01M2/34H01M2/204H01M2200/00Y02E60/10H01M50/213H01M50/30H01M50/574H01M50/503H01M50/548H01M50/516H01M50/559H01M50/20
Inventor 西野肇平川靖高村侯志
Owner PANASONIC CORP
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