BATTERY PACK

• Main Authors: HORAI JUNJI, ARIHARA KAZUKI
• Format: Patent
• Language: English; Japanese
• Published: 20.02.2020
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

To provide a battery pack capable of efficiently cooling batteries while inhibiting an electrode from being deformed by pressure applied by a cooling part.SOLUTION: A battery pack includes: a battery 100 including a power generation element 111 housed in a flexible outer package body, the power generation element obtained by laminating an electrode and an electrolyte layer, the electrode including an electrode active material layer, composed of a non-binding body including electrode active material, formed on a collector; a cooling part 20; and a deformation inhibition part 40. The cooling part comes into contact with a surface of the battery in a state in which the cooling part is pressed to the surface of the battery in a lamination direction of the power generation element. The cooling part forms an internal space for holding a coolant and has an end part 20E protruding to the outside in a surface direction from a contact surface 20S in contact with the surface of the battery. The deformation inhibition part inhibits the end part of the cooling part from being deformed in the lamination direction.SELECTED DRAWING: Figure 2 【課題】冷却部の加圧による電極の変形を抑制しつつ効率的に電池を冷却できる電池パックを提供する。【解決手段】電池パックは、電極活物質を含む非結着体からなる電極活物質層が集電体の表面に形成されてなる電極と、電解質層とを積層した発電要素１１１が可撓性を有する外装体に収容された電池１００と、冷却部２０と、変形抑制部４０と、を有する。そして、該冷却部は、発電要素の積層方向において電池の表面に対して加圧された状態で接触する。また、冷却部は、冷媒を保持する内部空間を形成し、電池の表面に接触する接触面２０Ｓよりも面方向の外側に突出した端部２０Ｅを備える。また、変形抑制部は、冷却部の端部の積層方向の変形を抑制する。【選択図】図２