Biopolar battery, manufacturing method thereof and vehicle

Patent metadata

Field	Value
Publication number	US-9979045-B2
Application number	US-201314772252-A
Country	US
Kind code	B2
Filing date	Mar 5, 2013
Priority date	Mar 5, 2013
Publication date	May 22, 2018
Grant date	May 22, 2018

Abstract

A bipolar battery, a manufacturing method thereof and a vehicle comprising the bipolar battery. The bipolar battery comprises a case comprising a first half case and a second half case; at least one bipolar plate with periphery sealed and sandwiched between the first half case and the second half case; and at least two electrical cores located at opposite two sides of the bipolar plate, respectively. With using the case made of flexible packaging material and sealing the peripheries of the bipolar plate collector and the case by sticking, it is easy to assemble and maintain the bipolar battery.

First claim

The invention claimed is:

1. A bipolar battery, wherein the bipolar battery comprises:
a case, having a first half case and a second half case;
at least one bipolar plate(s), with periphery of said bipolar plate(s) sealed and sandwiched between the first half case and the second half case;
at least two electrical cores, located at opposite two sides of the bipolar plate(s) respectively, and
a positive tab and a negative tab, which are arranged among the first half case, bipolar plate(s) and the second half case and extend outside of the case,
wherein the at least two electrical cores comprise a first electrical core inside a chamber between the first half case and the bipolar plate(s) adjacent to the first half case, and a second electrical core inside a chamber between the second half case and the bipolar plate(s) adjacent to the second half case, wherein the first electrical core comprises a first positive lead and a first negative lead, and the second electrical core comprises a second positive lead and a second negative lead; the first positive lead is electrically connected to a positive of the bipolar plate(s) adjacent to the first half case, and the first negative lead is electrically connected to the negative tab; the second negative lead is electrically connected to a negative of the bipolar plate(s) adjacent to the second half case, and the second positive lead is electrically connected to the positive tab,
insulating and sealing pieces are arranged among the bipolar plate(s), the first half case, the second half case, the positive tab and the negative tab at the periphery of the case,
at the periphery of the case, tab films are used to realize sealing and insulation between the positive tab and the case and between the negative tab and the case; tab film and first sealant are used to realize sealing and insulation between the positive tab and the bipolar plate(s) and between the negative tab and the bipolar plate(s), wherein the tab film contacts the positive tab and the negative tab, and the first sealant contacts the bipolar plate(s); a first sealant is used to realize sealing and insulation between the bipolar plate(s) and the first half case and between the bipolar plate(s) and the second half case; a second sealant is used to realize sealing and insulation between adjacent bipolar plates; the melting point of the second sealant is lower than that of the first sealant.

2. The bipolar battery according to claim 1 , wherein hot melt adhesive is provided on the periphery between the first half case and the bipolar plate(s) and on the periphery between the second half case and the bipolar plate(s), so that hot melt sealing is formed between the first half case and the periphery of the bipolar plate(s) and between the second half case and the periphery of the bipolar plate(s).

3. The bipolar battery according to claim 1 , wherein at least the portions where the first half case and the second half case contact the bipolar plate(s) are made of flexible packaging material.

4. The bipolar battery according to claim 1 , wherein the at least one bipolar plate(s) divides the interior of the case into a plurality of chambers, each of which comprising one of the electrical cores therein, each electrical core comprises one unit cell or a plurality of unit cells in parallel, and said at least two electrical cores are connected in series through the bipolar plate(s).

5. The bipolar battery according to claim 1 , wherein the at least one bipolar plate(s) comprise a plurality of bipolar plate(s), the at least two electrical cores comprise a third electrical core located between two adjacent bipolar plate(s), the third electrical core comprises a third positive lead and a third negative lead, the third positive lead is connected to the positive of one of the two adjacent bipolar plate(s), and the third negative lead is connected to the negative of the other of the two adjacent bipolar plate(s).

6. The bipolar battery according to claim 1 , wherein the first positive lead and second negative lead are arranged on one side of the case, and the second positive lead and first negative lead are arranged on another side of the case.

7. A vehicle comprising the bipolar battery described in claim 1 , wherein the bipolar battery provides power for the vehicle.

Assignees

• Shenhua Group Corp Ltd
• Nat Inst Clean & Low Carbon Energy

Inventors

• He Guangli
• Xue Simon
• Wang Francis
• Ren Yu
• Wang Guowen

Classifications

• H01M50/105

  Pouches or flexible bags · CPC title

• H01M10/0418 Primary

  with bipolar electrodes · CPC title

• H01M10/04

  Construction or manufacture in general (H01M10/058, H01M10/12, H01M10/28, H01M10/38 take precedence) · CPC title

• H01M2/266

  Electricity · mapped topic

• H01M2/024

  Electricity · mapped topic