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EP-4131582-B1 - BATTERY MODULE

EP4131582B1EP 4131582 B1EP4131582 B1EP 4131582B1EP-4131582-B1

Inventors

  • LIM, JONG MIN
  • KIM, JAE HONG

Dates

Publication Date
20260506
Application Date
20210901

Claims (3)

  1. A battery module (100) comprising: a plurality of battery cells (110); a flexible cooling passage (190) installed between the battery cells (110); a cooling fluid supply part (192) connected to one side of the flexible cooling passage (190) to supply a cooling fluid into the flexible cooling passage (190); a cooling fluid discharge part (193) connected to the other side of the flexible cooling passage (190) to discharge the cooling fluid of the flexible cooling passage (190); a first blocking part (150) installed between upper ends of the battery cells (110) so that the battery cells (110) are spaced apart from each other and supported; and a second blocking part (160) installed between lower ends of the battery cells (110) so that the battery cells are spaced apart from each other and supported, wherein the flexible cooling passage (190) is disposed in a spaced space between the first blocking part (150) and the second blocking part (160), the first blocking part (150) and the second blocking part (160) are formed along a shape of the space between the battery cells (110), the first blocking part (150) comprises a first fixing groove (157) formed on its lower surface, in which a first supporting portion (191a) of the upper portion of the flexible cooling passage (190) is inserted, thereby supporting the upper part of the flexible cooling passage (190), and the second blocking part (160) comprises a second fixing groove (167) formed on its upper surface, in which a second supporting portion (191b) of the lower portion of the flexible cooling passage (190) is inserted, thereby supporting the lower part of the flexible cooling passage (190).
  2. The battery module (100) of claim 1, wherein a width of a cooing fluid moving path formed by the flexible cooling passage (190) is 0.15 mm or more to 0.25 mm or less.
  3. The battery module (100) of any one of claims 1 to 2, wherein the first blocking part (150) and the second blocking part (160) are formed by curing glue applied to be in contact with the battery cells (110).

Description

TECHNICAL FIELD The present invention relates to a battery module, and more particularly, to a battery module capable of effectively cooling a plurality of battery cells. BACKGROUND ART In general, a battery module is constituted by a plurality of battery cells. A battery cell is an electrode assembly and is repeatedly chargeable and dischargeable through an electrochemical reaction between components by including positive and negative collectors, separators, an active material, an electrolytes, and the like. Here, the battery cells generate heat during the charging or discharging. If such heat is not removed, deterioration of the battery cells may be accelerated, and in some cases, ignition or explosion of the battery cells may occur. Conventionally, a heat sink is used to cool the battery cells. The heat sink is disposed between the battery cells and installed to be in contact with the battery cells. Thus, the refrigerant flowing inside the heat sink absorbs heat generated in the battery cells to adjust a temperature of each of the battery cells. However, when the battery cells are densely arranged in a narrow space, it may be difficult to secure an installation space for the heat sink between the battery cells. Thus, the heat sink may not be installed between the battery cells, and thus the battery cells may not be cooled. (Patent Document 1) KR2020-0064761 A EP 3 651 262 A1 describes a battery pack, including a plurality of battery cells, a case providing an accommodation space for accommodating the battery cells and a cooling fluid for cooling the battery cells, and a barrier wall extending across the accommodation space and dividing the accommodation space into an upstream area in communication with an inlet for the cooling fluid and a downstream area in communication with an outlet for the cooling fluid. The barrier wall provides a communication area where the upstream area and the downstream area communicate with each other. The inlet and the outlet are at a first end of the barrier wall in an extension direction of the barrier wall, and the communication area is at a second end of the barrier wall in the extension direction of the barrier wall. WO 2018/209776 A1 describes a battery module, comprising a shell and a series of cylindrical battery cells arranged in the shell. Each of the cylindrical battery cells has electrodes at two ends being exposed from corresponding openings on opposite sides of the shell. The shell defines a liquid inlet and a liquid outlet, and a cooling fluid enters the shell from the liquid inlet and is output out of the shell from the liquid outlet. Sealing members are arranged between the opposite sides of the shell and the two ends of the cylindrical battery cell. The sealing members prevent the cooling fluid from flowing out from the corresponding openings. US 2017/0162922 A1 describes an energy storage pack including a coolant inlet manifold, a coolant outlet manifold, and a plurality of thermal-exchange tubes extending between the coolant inlet manifold and the coolant outlet manifold to exchange heat between coolant passing through the plurality of thermal-exchange tubes and a plurality of battery cells mounted adjacent to and among the plurality of thermal-exchange tubes within the energy storage pack. The energy storage pack may further include a coolant inlet opening located on the coolant inlet manifold and a coolant outlet opening located on the coolant outlet manifold. US 2009/0301700 A1 describes a method for producing a heat exchanger tube bundle for a heat exchanger of an electrochemical energy accumulators. Heat exchanger channels and an intended profile are incorporated into material strips by deep drawing. A forward-flow distribution aperture is incorporated into a first such material strip, and return collecting apertures are incorporated into a second such material strip, forming first and the second heat exchanger plates. The latter are aligned in such a manner that webs of the two heat exchanger plates border each other, and the heat exchanger channels form heat exchanger tubes. The heat exchanger plates arranged in this manner are joined together to form a heat exchanger tube bundle. A corresponding heat exchanger tube bundle, a heat exchanger module, a heat exchanger with two or more heat exchanger modules, and an electrochemical energy accumulator with a heat exchanger of this type are also described. DISCLOSURE OF THE INVENTION TECHNICAL PROBLEM The present invention provides a battery module capable of easily securing a space in which a cooling fluid is capable of moving between a plurality of batteries. The present invention provides a battery module capable of effectively cooling a plurality of battery cells. TECHNICAL SOLUTION A battery module according to an example not forming part of the present invention includes: a plurality of battery cells, which are insulated and spaced apart from each other to form an empty space; an upper cover having