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Novel battery monomer and battery module thereof

A battery cell, a new type of technology, applied in the direction of secondary batteries, battery pack components, circuits, etc., can solve the problems of battery heat can not be exported in time, battery pack can not effectively dissipate heat, low energy density per unit volume, etc., to improve the unit Volumetric energy density, fast and uniform heat conduction, and stable heat dissipation

Pending Publication Date: 2022-07-01
FUJIAN FUSSHIA TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] One: the heat dissipation problem of the battery pack: the internal heat of the battery cannot be exported in time, and the battery pack cannot effectively dissipate heat
[0015] Second: low battery performance in low temperature state: low temperature environment leads to poor battery life
[0016] Third: complex structure and low energy density per unit volume

Method used

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  • Novel battery monomer and battery module thereof
  • Novel battery monomer and battery module thereof
  • Novel battery monomer and battery module thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] like Figure 1-3 As shown, a new type of battery cell 100 includes a battery casing 6, several layers of positive electrode sheets 1, separators 3 and negative electrode sheets 2 that are alternately stacked in cycles. The battery casing 6 includes a casing 61 and an end cap 62. , the separator 32 and the negative electrode sheet 2 are enclosed in the battery casing 6, and the positive electrode sheet 1 comprises a positive electrode current collector 11 and a positive electrode active material layer 12 covered on one side or both sides thereof; the negative electrode sheet 2 comprises a negative electrode collector The fluid 21 and the negative electrode active material layer 22 covering one side or both sides thereof have a separator 3 between adjacent positive electrode sheets 1 and negative electrode sheets 2 . In this embodiment, one side of the positive electrode current collector 11 extends outward beyond the edge 121 of the positive electrode active material lay...

Embodiment 2

[0074] like Figure 4-6 As shown, the difference from the first embodiment is that in this embodiment, the positive electrode current collector extends to connect with the first heat conductor 4, and the negative electrode current collector extends to connect with the second heat conductor 5, so The first heat conductor 4 is connected to the battery end cover 62 adjacent to it, the second heat conductor 5 is connected to the inner side of the battery case bottom 611 adjacent to it; the extension part of the positive electrode current collector, the negative electrode current collector The extension portion, the first heat conductor 4 and the second heat conductor 5 are enclosed in the battery case 6 .

[0075] In this embodiment, the extension parts of the positive electrode current collector 11 and the negative electrode current collector 21 are respectively connected with the first heat conductor 4 and the second heat conductor 5 , and the first heat conductor 4 and the seco...

Embodiment 3

[0087] like Figure 7 Shown is an example of a battery module formed by applying the battery cells described in the first technical solution of the present invention. Figure 7 Describe it in detail.

[0088] Figure 7 200 is a battery module, 201 is a battery column, 202 is a battery module shell, and 203 is a battery module end cover. 100 is a battery cell, and 101 is a positive heat dissipation surface of the battery cell shell.

[0089] like Figure 7 As shown in the figure, a battery module according to the technical solution of the present invention includes a plurality of battery cells 100 and a module housing shell 202, and the battery cells 100 are one of the three technical solutions mentioned in the first purpose of the invention. One of the battery cells, the battery cells are electrically connected to each other, and all the battery cells 100 are closely arranged with each other. In this embodiment, only a schematic diagram of eight battery cells is given. In...

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Abstract

The battery monomer comprises a battery shell, a plurality of layers of positive plates, diaphragms and negative plates, the positive plates, the diaphragms and the negative plates are circularly and alternately stacked, the diaphragms are arranged between the adjacent positive plates and negative plates, at least one side edge of the positive current collector extends outwards to exceed the edges of a positive active material layer and the diaphragms, and at least one side edge of the negative current collector extends outwards to exceed the edges of the diaphragms. The edge of the negative current collector and the edge of the negative active material layer on the same side are shorter than the edge of the diaphragm but not shorter than the edge of the positive active material layer; the positive current collector extends to be connected with an adjacent battery shell body or end cover, or extends to be connected with a first heat conductor, and the first heat conductor is connected with the adjacent battery shell body or end cover; the extension part of the positive current collector and the first heat conductor are sealed in the battery shell; a battery shell body or an end cover connected with the positive current collector or the first heat conductor is used as a positive heat dissipation surface of the battery, and the first heat conductor is made of a heat conduction material and is used for conducting heat on the positive current collector to the battery shell body or the end cover.

Description

technical field [0001] The invention belongs to the technical field of batteries, and in particular relates to a novel battery cell and a battery module thereof. Background technique [0002] In order to alleviate the global environmental problems and resource problems caused by traditional fuel vehicles, countries around the world are vigorously developing the electric vehicle industry. Lithium-ion power battery is a key component of electric vehicles, which directly affects and restricts the power, economy, reliability and safety of electric vehicles. Lithium-ion power batteries have high requirements on working temperature. 20-50 degrees Celsius is the best working temperature. In summer, fast heat dissipation is required, and in winter, fast heating is required to ensure stable and efficient operation of the battery. [0003] At present, the main materials that constitute lithium-ion power batteries are manganese, cobalt, ternary and lithium iron phosphate compounds. Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/0585H01M10/613H01M10/615H01M10/617H01M10/625H01M10/654H01M10/653H01M10/655H01M50/249H01M50/209
CPCH01M10/0585H01M10/613H01M10/615H01M10/617H01M10/625H01M10/654H01M10/653H01M10/655Y02P70/50
Inventor 陈健徐韬朱良焱
Owner FUJIAN FUSSHIA TECH CO LTD
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