ELECTRICITY STORAGE DEVICE

• US 20170237275A1
• Filed: 01/15/2016
• Published: 08/17/2017
• Est. Priority Date: 01/26/2015
• Status: Abandoned Application

• Current Assignee: Panasonic Intellectual Property Management Co., Ltd. (Panasonic Holdings Corporation)
• Original Assignee: Panasonic Intellectual Property Management Co., Ltd. (Panasonic Holdings Corporation)
• Inventors: TENMYO, HIROSHI, HASEGAWA, TAKASHI, TAKASAKI, HIROSHI, NAGAO, TAKESHI
• Application Number:
  US15/502,835
• Publication Number:
  US 20170237275A1
• Time in Patent Office: Days
• CPC Class Codes: H01M 10/44 Methods for charging or discharging circuits for charging H02J7/00
• CPC Class Codes: H01M 10/441 for several batteries or cells simultaneously or sequentially
• CPC Class Codes: H01M 2200/108 Normal resistors
• CPC Class Codes: H01M 2220/10 Batteries in stationary systems, e.g. emergency power source in plant
• CPC Class Codes: H01M 2220/20 Batteries in motive systems, e.g. vehicle, ship, plane
• CPC Class Codes: H01M 50/269 Mechanical means for varying the arrangement of batteries or cells for different uses, e.g. for changing the number of batteries or for switching between series and parallel wiring methods or arrangements for servicing or maintenance H01M6/50, H01M10/42
• CPC Class Codes: H01M 50/271 Lids or covers for the racks or secondary casings
• CPC Class Codes: H02J 3/32 using batteries with converting means
• CPC Class Codes: H02J 7/0014 Circuits for equalisation of charge between batteries
• CPC Class Codes: H02J 7/0068 Battery or charger load switching, e.g. concurrent charging and load supply H02J7/0013 takes precedence
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries

Abstract

An electricity storage device includes a battery, a discharge device, and a controller for controlling charging and discharging of the battery. The discharge device includes a swelling member, a movable switch, and a discharge switch. When the swelling member swells, the movable switch is moved. When the movable switch is moved, the discharge switch is turned on. A signal indicating that the discharge switch is turned on is transmitted to the controller to cause the battery to start discharging of electricity.

Claims

1. An electricity storage device comprising:

a battery;

a discharge device; and

a controller for controlling charging and discharging of the battery,

wherein the discharge device includes a swelling member, a movable switch, and a discharge switch,

the movable switch is moved when the swelling member swells,

the discharge switch is turned on when the movable switch is moved, and

a signal indicating that the discharge switch is turned on is transmitted to the controller to cause the battery to start discharging.

3. The electricity storage device according to claim 1, wherein the swelling member includes a water absorbing polymer and a moisture absorbing agent.

4. The electricity storage device according to claim 1, wherein

the electricity storage device is accommodated in a case,

the case is provided with an opening and a lid for introducing moisture into the discharge device, and

the controller opens the lid to introduce the moisture from the opening.

6. The electricity storage device according to claim 4, wherein

the controller includes a timer,

the timer starts counting as a trigger that the charging and discharging of the battery stop, and continues counting until a period during which the charging and discharging of the battery stop reaches a predetermined period, and

the controller opens the opening when a count of the timer reaches the predetermined period.

2. An electricity storage device comprising:

a battery; and

a discharge device,

wherein the discharge device includes a swelling member, a movable conductive plate, a discharging positive electrode terminal, and a discharging negative electrode terminal,

the discharging positive electrode terminal is electrically coupled to a positive electrode terminal of the battery,

the discharging negative electrode terminal is electrically coupled to a negative electrode terminal of the battery,

the conductive plate is moved when the swelling member swells, and

the conductive plate short-circuits the discharging positive electrode terminal and the discharging negative electrode terminal.

5. The electricity storage device according to claim 2, wherein

the electricity storage device further includes a controller for controlling charging and discharging of the battery,

the case is provided with an opening and a lid for introducing moisture into the discharge device, and

the controller opens the lid to introduce the moisture from the opening.

7. The electricity storage device according to claim 2, wherein the swelling member includes a water absorbing polymer and a moisture absorbing agent.

8. The electricity storage device according to claim 5, wherein

the controller includes a timer,

the timer starts counting as a trigger that the charging and discharging of the battery stop, and continues counting until a period during which the charging and discharging of the battery stop reaches a predetermined period, and

the controller opens the opening when a count of the timer reaches the predetermined period.