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Battery protection PTC device

A battery and device technology, which is applied to battery pack components, secondary battery repair/maintenance, electrical components, etc., can solve problems such as inapplicable single battery protection, unusable battery pack, and impossibility of satisfactory connection of PTC devices

Inactive Publication Date: 2012-10-17
谢维
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is impossible for PTC devices to be satisfactorily connected in a battery pack with cells arranged laterally and in parallel.
[0006] For the latter: battery packs arranged horizontally and in parallel, and equipped with PTC devices are recorded in patents CN1197534 and CN1278366, but they cannot be applied to battery packs with straight-line battery packs
[0007] The above patents also cannot be applied to the protection of a single battery, and cannot be used for battery packs used in existing equipment without modification

Method used

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with drawings and embodiments.

[0017] figure 1 is a schematic plan view of an embodiment of the preferred PTC device of the present invention, figure 2 Be used for the PTC device of the present invention ( figure 1 ) A-A sectional view.

[0018] Wherein the PTC device 1 comprises a PTC material 5, a first conductive lead 8 and a second conductive lead 9 and an insulating layer 6, and in the illustrated embodiment, the insulating layer 6 covers the middle part of the first conductive lead and the second conductive lead groove 7 Between, and the semi-annular inner side of the PTC material 5, a sandwich layer 2 is formed in the middle of the PTC device, which is used to isolate the first conductive lead 8 and the second conductive lead 9. The first electrode 3 in the first conductive lead 8 and the second electrode 4 in the second conductive lead 9 are opposite to each other and attached to the uppe...

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Abstract

A battery protection PTC device comprises a PTC material, a first conductive wire, a second conductive wire and an insulating layer. One opening of the PTC material is in a groove shape; and a sandwich thin layer in the groove comprises the first conductive wire, the insulating layer and the second conductive wire, has a thickness less than 1 mm, and is used to achieve electrical connection during PTC device insertion between battery and battery and between battery and battery box spring.

Description

technical field [0001] The present invention relates to an electronic device with a positive temperature coefficient (positive temperature coefficient, PTC for short) conductive polymer, especially a PTC device used as a circuit protector and a single battery or a battery pack using the device. Background technique [0002] PTC exhibits a property in which the resistance value increases rapidly due to temperature increase within a relatively small temperature range. Polymer substances with PTC properties are generally used in protection devices against current overload, circuit protection units, heaters and the like. [0003] The PTC device is a device built into the battery pack for protection. When a large current flows through the unit cell or the temperature of the battery rises, the resistance of the PTC device connected in series with the battery increases sharply, greatly reducing the current flowing through the battery to protect the battery. [0004] At present, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01C7/02H01M10/42H01M2/34
CPCY02E60/12Y02E60/10
Inventor 谢维
Owner 谢维
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