Battery module

Patent metadata

Field	Value
Publication number	US-9806307-B2
Application number	US-201514630450-A
Country	US
Kind code	B2
Filing date	Feb 24, 2015
Priority date	Jul 17, 2014
Publication date	Oct 31, 2017
Grant date	Oct 31, 2017

Abstract

The present disclosure provides a battery module, which comprises: a plurality of mono-batteries arranged in a manner that side surfaces are adjacent to each other; an insulative casing receiving the plurality of mono-batteries; a supporting frame fixed in the insulative casing, provided with a potting hole, and holding the plurality of mono-batteries therein; and a separating body which is formed by injecting via the potting holes and curing and is potted among the adjacent mono-batteries, so as to allow the plurality of mono-batteries to be insulated and isolated from each other. When one mono-battery is involved in a safety problem and leaks, other mono-batteries are not affected due to the isolation of the separating body potted among the adjacent mono-batteries, so as to improve the safety performance of the battery module. In addition, the battery module has the advantages of simple structure, small size, and low cost.

First claim

What is claimed is:

1. A battery module, comprising:
a plurality of mono-batteries arranged in a manner that side surfaces are adjacent to each other;
an insulative casing receiving the plurality of mono-batteries;
a supporting frame fixed in the insulative casing, provided with a potting hole, and holding the plurality of mono-batteries therein; and
a separating body which is formed by injecting via the potting holes and curing and is potted among the adjacent mono-batteries, so as to allow the plurality of mono-batteries to be insulated and isolated from each other;
the insulative casing further comprising:
a side plate surrounding three sides of an assembly of the plurality of mono-batteries;
an upper cover connected to the side plate in a sealing way above the side plate;
a lower cover connected to the side plate in a sealing way below the side plate; and
a side cover connected to the side plate, the upper cover and the lower cover in a sealing way on the other side of the assembly of the plurality of mono-batteries;

wherein
the side plate of the insulative casing is provided with an upper latching groove and a lower latching groove;
the supporting frame comprises:
an upper supporting frame portion engaged with the upper latching groove of the side plate; and
a lower supporting frame portion spaced apart from the upper supporting frame portion and located below the upper supporting frame portion and engaged with the lower latching groove of the side plate.

2. The battery module according to claim 1 , wherein the upper supporting frame portion and the lower supporting frame portion are provided with battery receiving holes formed in pairs correspondingly, the each mono-battery is inserted into the respective pair of battery receiving holes.

3. The battery module according to claim 2 , wherein the mono-battery is a soft package battery, the mono-battery has a side packaging edge;
the each battery receiving hole of the upper supporting frame portion and the lower supporting frame portion is provided with a battery positioning groove at an edge of the each battery receiving hole, so as to correspondingly receive and fix the side packaging edge of the corresponding mono-battery.

4. The battery module according to claim 2 , wherein the upper supporting frame portion is provided with vent holes provided between the adjacent battery receiving holes.

5. The battery module according to claim 1 , wherein
the supporting frame further comprises: staggered ribs provided on the lower supporting frame portion and located between the adjacent battery receiving holes;
the battery module further comprises: a temperature control tube provided with a heat-transfer medium therein, provided in the supporting frame by latching on the staggered ribs of the lower supporting frame portion, and in contact with side surfaces of the each mono-battery, and two end portions of the temperature control tube pass through the side cover, and the temperature control tube is encapsulated by the potted separating body except parts of the temperature control tube in contact with the side surfaces of the each mono-battery.

6. A battery module, comprising:
a plurality of mono-batteries arranged in a manner that side surfaces are adjacent to each other;
an insulative casing receiving the plurality of mono-batteries;
a supporting frame fixed in the insulative casing, provided with a potting hole, and holding the plurality of mono-batteries therein; and
a separating body which is formed by injecting via the potting holes and curing and is potted among the adjacent mono-batteries, so as to allow the plurality of mono-batteries to be insulated and isolated from each other;
wherein
the plurality of mono-batteries each have a first electrode tab and a second electrode tab which are opposite in electrical polarity;
the battery module further comprises: a connecting piece electrically connecting the first electrode tabs and the second electrode tabs of the plurality of mono-batteries, and provided with a first master output end and a second master output end which are opposite in electrical polarity.

7. The battery module according to claim 6 , wherein the connecting piece comprising:
a first upper piece body and a second upper piece body provided between the insulative casing and an upper part of the plurality of mono-batteries, provided with the first master output end and the second master output end which are opposite in electrical polarity, respectively, the first upper piece body electrically connects the first electrode tab at the upper part of the corresponding mono-battery of the plurality of mono-batteries, the second upper piece body electrically connects the second electrode tab at the upper part of the corresponding mono-battery of the plurality of mono-battery; and
a lower piece body provided between the insulative casing and a lower part of the plurality of mono-batteries and comprising:
a first connecting portion electrically connecting the second electrode tab at the lower part of the mono-battery connected to the first upper piece body of the plurality of mono-batteries; and
a second connecting portion electrically connecting the first electrode tab at the lower part of the mono-battery connected to the second upper piece body of the plurality of mono-batteries, and electrically connected to the first connecting portion.

8. The battery module according to claim 7 , wherein at least one of the first upper piece body, the second upper piece body and the lower piece body has a curved portion, so as to allow the corresponding one of the first electrode tab and the second electrode tab of the corresponding mono-battery to bend, abut against and be weld on the curved portion.

9. The battery module according to claim 7 , wherein
the first upper piece body has first welding holes, the each first welding hole allows the first electrode tab at the upper part of the corresponding mono-battery of the plurality of mono-batteries to pass through and be weld on the first upper piece body;
the second upper piece body has second welding holes, the each second welding hole allows the second electrode tab at the upper part of the corresponding mono-battery of the plurality of mono-batteries to pass through and be weld on the second upper piece body;
the first connecting portion of the lower piece body has third welding holes, the each third welding hole allows electrical connection of the second electrode tab at the lower part of the mono-battery connected to the first upper piece body of the plurality of mono-batteries;
the second connecting portion of the lower piece body has fourth welding holes, the each fourth welding hole allows electrical connection of the first electrode tab at the lower part of the mono-battery connected to the second upper piece body of the plurality of mono-batteries.

10. The battery module according to claim 9 , wherein at least one of the first welding hole, the second welding hole, the third welding hole and the fourth welding hole is formed with a bent piece which is integrally formed, so as to allow the corresponding one of the first electrode tab and the second electrode tab of the corresponding mono-battery to bend, abut against and be weld on the corresponding one bent piece of the first upper piece body, the second upper piece body, and the lower piece body.

11. A battery module, comprising:
a plurality of mono-batteries arranged in a manner that side surfaces are adjacent to each other;
an insulative casing receiving the plurality of mono-batteries;
a supporting frame fixed in the insulative casing, provided with a potting hole, and holding the plurality of mono-b

Assignees

• Ningde Amperex Technology Ltd

Inventors

• Zheng Yulian
• Guo Zhijun
• Wang Peng
• Deng Pinghua

Classifications

• H01M10/6556 Primary

  Solid parts with flow channel passages or pipes for heat exchange (closed pipes H01M10/6552) · CPC title

• H01M50/516

  by welding, soldering or brazing · CPC title

• H01M50/291

  characterised by their shape · CPC title

• H01M50/503

  characterised by the shape of the interconnectors · CPC title

• H01M50/249

  specially adapted for aircraft or vehicles, e.g. cars or trains (constructional details of batteries specially adapted for electric vehicles B60L50/64) · CPC title