Electrochemical device and electronic device

An electrochemical and electrical connection technology, applied in the direction of large flat batteries/batteries, circuits, electrical components, etc., can solve the problems of reducing the energy density of electrochemical devices, speeding up internal heat dissipation, etc., to reduce the loss of energy density and improve the temperature difference between inside and outside. Effect

Active Publication Date: 2021-09-07
DONGGUAN POWERAMP TECH LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, although the heat conduction sheet inside the electrochemical device can speed up the internal heat dissipation, it will reduce the energy density of the electrochemical device.

Method used

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  • Electrochemical device and electronic device
  • Electrochemical device and electronic device
  • Electrochemical device and electronic device

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Embodiment Construction

[0038] Embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary, and are only for explaining the present application, and should not be construed as limiting the present application.

[0039] Refer below Figure 1-Figure 11 The electrode assembly 100 according to the embodiment of the present application will be described in detail.

[0040] In some embodiments, such as figure 1 As shown, the electrode assembly 100 according to the embodiment of the present application includes a first pole piece 10 , a separator 20 , and a second pole piece 30 . The first pole piece 10 includes a first current collector 101 and a first active material layer 102 disposed on the first current collector 101 . The second p...

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Abstract

The invention discloses an electrochemical device and an electronic device. The electrochemical device comprises an electrode assembly, and the electrode assembly comprises a first pole piece, a second pole piece and an isolating membrane arranged between the first pole piece and the second pole piece. The first pole piece comprises a first current collector and a first active material layer arranged on the first current collector, and the second pole piece comprises a second current collector and a second active material layer arranged on the second current collector. The electrode assembly further comprises at least one first concave part and a plurality of first tabs, wherein the first concave part is arranged on the second pole piece, the plurality of first tabs are formed by the first current collector and are electrically connected with one another, and a first concave part is arranged between the two first tabs in the thickness direction of the electrode assembly. According to the electrochemical device, the tabs and the current collector are integrally formed, so that the internal and external temperature difference of the electrochemical device under high-rate charging and discharging can be improved, and the energy density loss is reduced.

Description

technical field [0001] The present application relates to an electrochemical device and an electronic device. Background technique [0002] Electrochemical devices are capable of charging and discharging, and have been widely used in consumer products, digital products, power products, medical and security and other fields. Electrochemical devices will generate a lot of heat during high-current charging and discharging. At the same time, due to different heat dissipation conditions inside and outside the electrochemical device, there will also be a large temperature difference. The heat accumulation and the imbalance of internal and external temperatures will affect the life of the electrochemical device and performance impact. In the prior art, a heat conduction sheet is generally arranged inside the electrochemical device, and the internal heat is exported through the heat conduction sheet. However, although the heat conduction sheet inside the electrochemical device can...

Claims

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Application Information

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IPC IPC(8): H01M10/04H01M50/533
CPCH01M10/0413H01M10/0431H01M50/533Y02P70/50Y02E60/10
Inventor金娟蔡阳声吴飞
OwnerDONGGUAN POWERAMP TECH LTD