JP2020024814A5

JP2020024814A5 -

Info

Publication number: JP2020024814A5
Application number: JP2018147794A
Authority: JP
Filing date: 2018-08-06
Publication date: 2020-08-27
Anticipated expiration: 2038-08-06

Description

開示された組電池の一つは、電池積層体を形成する複数の電池セル（２）と、内部通路を流通する熱媒体と電池セルとが熱交換するように設けられた熱媒体通路部材（１０４；２０４；３０４）と、熱伝導性を有し、電池積層体に対して積層方向の両側から拘束力を作用させるように電池積層体の両側に電池セルに対して熱伝達可能に設けられた一組の拘束部材（３；４４，４５）と、を備え、熱媒体通路部材の内部通路は、一組の拘束部材のうち少なくとも一つの拘束部材の内部に設けられた拘束部材内通路（４０，４２）に連結されており、
熱媒体通路部材は、積層方向に隣り合う電池セルと電池セルの間に介在し内部通路を流通する熱媒体と電池セルとが熱交換するセル間部（１４０）と、積層方向に隣り合うセル間部とセル間部とを連結し内部通路を熱媒体が流れる連結部（１４１）と、を備えている。 One of the disclosed battery packs is a plurality of battery cells (2) forming a battery stack, and a heat medium passage member ( provided to exchange heat between the heat medium flowing through the internal passage and the battery cells). 1 04; 204; 304) has a thermal conductivity, provided that heat can be transmitted to the battery cell to the opposite sides of the cell stack so as to exert a restraining force from both sides in the stacking direction with respect to battery stack A pair of restraint members (3; 44, 45) provided therein, and the internal passage of the heat medium passage member is a restraint member internal passage provided inside at least one restraint member of the set of restraint members. Connected to (40, 42) ,
The heat medium passage member is interposed between the battery cells adjacent to each other in the stacking direction, and the inter-cell portion (140) for exchanging heat between the heat medium flowing through the internal passage and the battery cells and the cells adjacent to each other in the stacking direction. And a connecting portion (141) for connecting the inter-cell portion and the inter-cell portion and allowing the heat medium to flow through the internal passage .

この組電池によれば、熱媒体は熱媒体通路部材の内部通路を流通して電池セルと熱交換するとともに、拘束部材内通路にも流通して拘束部材に隣接している電池セルと熱交換する。これにより、拘束部材は、複数の電池セルを積層方向に拘束する拘束機能と電池セルを温度調整可能な温調機能とを併せ持っている。したがって、構成部品の多機能性が図れる組電池を提供できる。
開示された組電池の一つは、電池積層体を形成する複数の電池セル（２）と、内部通路を流通する熱媒体と電池セルとが熱交換するように設けられた熱媒体通路部材（３０４）と、熱伝導性を有し、電池積層体に対して積層方向の両側から拘束力を作用させるように電池積層体の両側に電池セルに対して熱伝達可能に設けられた一組の拘束部材（４４，４５）と、を備え、
熱媒体通路部材の内部通路は、一組の拘束部材のそれぞれの内部に設けられた拘束部材内通路に連結されており、一組の拘束部材は、熱媒体通路部材を形成する管が電池積層体の両側においてそれぞれ複数回折り返されて積層された積層管部によって形成されている。 According to this battery pack, the heat medium flows through the internal passages of the heat medium passage member to exchange heat with the battery cells, and also through the internal passages of the restraining member to exchange heat with the battery cells adjacent to the restraining member. To do. As a result, the restraint member has both a restraint function of restraining the plurality of battery cells in the stacking direction and a temperature control function of adjusting the temperature of the battery cells. Therefore, it is possible to provide an assembled battery in which the multi-functionality of the constituent parts can be achieved.
One of the disclosed battery packs is a plurality of battery cells (2) forming a battery stack, and a heat medium passage member (provided to exchange heat between the heat medium flowing through the internal passage and the battery cells). 304) and has a thermal conductivity and is provided on both sides of the battery laminate so that heat can be transferred to the battery cells so as to exert a restraining force on the battery laminate from both sides in the stacking direction. And restraint members (44, 45),
The internal passage of the heat medium passage member is connected to the internal passage of the restraining member provided inside each of the set of restraining members. In the set of restraining members, the tubes forming the heat medium passage member are laminated in the battery. It is formed by a laminated tube portion which is folded back a plurality of times on both sides of the body.

Claims

A plurality of battery cells (2) forming a battery stack,
A heat medium passage member ( 104; 204; 304) provided so as to exchange heat between the heat medium flowing through the internal passage and the battery cell;
A pair of sets having thermal conductivity, which are provided on both sides of the battery stack so as to be able to transfer heat to the battery cells so as to exert a restraining force on the battery stack from both sides in the stacking direction. Restraint members (3; 44, 45),
Equipped with
The inner passage of the heat medium passage member is connected to a restraint member inner passage (40, 42) provided inside at least one of the restraint members of the set of restraint members ,
The heat medium passage member is interposed between the battery cells adjacent to each other in the stacking direction, and an inter-cell portion (140) for exchanging heat between the heat medium flowing through the internal passage and the battery cells, An assembled battery , comprising: the inter-cell portion adjacent to each other in the stacking direction; and a connection portion (141) that connects the inter-cell portion and the heat medium flows through the internal passage .

The restraint member connects an inflow side connecting portion (40a) capable of connecting a supply pipe for supplying the heat medium to the restraint member inner passage, and an outflow pipe through which the heat medium flows out from the restraint member inner passage. The assembled battery according to claim 1, which has a possible outflow side connection portion (42c) therein.

A fixture (6) for fixing the restraint member to the installation part (10),
The assembled battery according to claim 2, wherein the outlet portion of the supply pipe and the inflow side connection portion are fitted in a direction in which the restraint member approaches the installation portion by a fixing force of the fixture.

A fixture (6) for fixing the restraint member to the installation part (10),
The assembled battery according to claim 2, wherein the inlet portion of the outflow pipe and the outlet-side connection portion are fitted in a direction in which the restraint member approaches the installation portion due to a fixing force of the fixture.

The inter-cell portion and the connecting portion form a series of the internal passages through which the heat medium that exchanges heat with all the battery cells flows down from one end to the other end in the stacking direction of the battery stack. The assembled battery according to claim 1 , wherein the assembled battery is provided as follows.

Of the set of restraint members, the one restraint member adjacent to the battery cell at the one end is an inflow side connection capable of connecting a supply pipe for supplying the heat medium to the restraint member internal passage. The other restraint member that has a portion (40a) inside and is adjacent to the battery cell at the other end is capable of connecting an outflow pipe through which the heat medium flows out of the restraint member internal passage. The assembled battery according to claim 5 , which has (42c) therein .

A plurality of battery cells (2) forming a battery stack,
A heat medium passage member (304) provided so as to exchange heat between the heat medium flowing through the internal passage and the battery cell;
A pair of sets having thermal conductivity, which are provided on both sides of the battery stack so as to be able to transfer heat to the battery cells so as to exert a restraining force on the battery stack from both sides in the stacking direction. Restraint members (44, 45),
Equipped with
The inner passage of the heat medium passage member is connected to a restraint member inner passage provided inside each of the pair of restraint members,
A pair of said restraining member, assembled battery tubes forming the heat medium passage member that has been formed by laminating tube portion which are laminated is folded back a plurality of times, respectively, in the sides of the cell stack.