Energy storage device

Patent metadata

Field	Value
Publication number	US-9634350-B2
Application number	US-201414333982-A
Country	US
Kind code	B2
Filing date	Jul 17, 2014
Priority date	Apr 7, 2014
Publication date	Apr 25, 2017
Grant date	Apr 25, 2017

Abstract

An energy storage device is provided. The energy storage device includes at least an energy-type electrode pair, including a first positive electrode; a first negative electrode disposed opposite to the first positive electrode; and a first electrolyte disposed between the first positive electrode and the first negative electrode; at least a power-type electrode pair, including a second positive electrode; a second negative electrode disposed opposite to the second positive electrode; and a second electrolyte disposed between the second positive electrode and the second negative electrode; and a housing receiving the energy-type electrode pair and the power-type electrode pair.

First claim

What is claimed is:

1. An energy storage device, comprising:
at least an energy-type electrode pair, including:
a first positive electrode;
a first negative electrode disposed opposite to the first positive electrode; and
a first electrolyte disposed between the first positive electrode and the first negative electrode;

a circuit coupled to the at least an energy-type electrode pair;
at least a power-type electrode pair coupled to the circuit, and including:
a second positive electrode;
a second negative electrode disposed opposite to the second positive electrode; and
a second electrolyte disposed between the second positive electrode and the second negative electrode; and

a housing receiving the at least an energy-type electrode pair and the at least a power-type electrode pair,
wherein the at least an energy-type electrode pair and the at least a power-type electrode pair are simultaneously operated in parallel via the circuit, the circuit has a positive temperature coefficient thermistor in thermal contact with the at least an energy-type electrode pair and the at least a power-type electrode pair, the positive temperature coefficient thermistor has a first positive temperature coefficient below a specific temperature and has a second positive temperature coefficient above the specific temperature, and the first positive temperature coefficient is smaller than the second positive temperature coefficient.

2. The energy storage device as claimed in claim 1 , further comprising a control module controlling the energy-type electrode pair and the power-type electrode pair to be operated independently.

3. The energy storage device as claimed in claim 1 , further comprising a control module controlling the energy-type electrode pair and the power-type electrode pair to be operated in parallel via a circuit.

4. The energy storage device as claimed in claim 1 , further comprising an electronic element in thermal contact with the energy-type electrode pair.

5. The energy storage device as claimed in claim 4 , wherein the electronic element is a positive temperature coefficient (PTC) resistor.

6. The energy storage device as claimed in claim 1 , wherein the energy-type electrode pair has an energy density higher than that of the power-type electrode pair.

7. The energy storage device as claimed in claim 1 , wherein the energy-type electrode pair has a power density lower than that of the power-type electrode pair.

8. The energy storage device as claimed in claim 1 , wherein when the energy-type electrode pair has a temperature not lower than a working temperature of the energy-type electrode pair, and the energy storage device needs to input/output a high energy electricity, the energy-type electrode pair performs a charge/discharge.

9. The energy storage device as claimed in claim 1 , wherein when the energy-type electrode pair has a temperature lower than a working temperature of the energy-type electrode pair, the power-type electrode pair performs a charge/discharge.

10. The energy storage device as claimed in claim 1 , wherein when the energy storage device needs to input/output a high power electricity, the power-type electrode pair performs a charge/discharge.

11. The energy storage device as claimed in claim 1 , wherein the housing has a first positive electrode terminal electrically connected to the first positive electrode, a first negative electrode terminal electrically connected to the first negative electrode, a second positive electrode terminal electrically connected to the second positive electrode, and a second negative electrode terminal electrically connected to the second negative electrode.

12. The energy storage device as claimed in claim 11 , wherein:
the first positive electrode terminal and the first negative electrode terminal are disposed at a first side of the housing; and
the second positive electrode terminal and the second negative electrode terminal are disposed at a second side of the housing.

13. The energy storage device as claimed in claim 12 , wherein the first side and the second side are one of the same side of the housing and different sides of the housing.

14. The energy storage device as claimed in claim 1 , further comprising:
a first insulating film disposed between the first positive electrode and the first negative electrode; and
a second insulating film disposed between the second positive electrode and the second negative electrode.

Assignees

• Univ Nat Taiwan Science Tech

Inventors

• Hwang Bing-Joe
• Su Wei-Nien
• Cheng Ming-Yao

Classifications

• H01M16/00

  Structural combinations of different types of electrochemical generators · CPC title

• H01M10/615

  Heating or keeping warm · CPC title

• H01M2200/106

  PTC · CPC title

• H01M10/425

  Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing (printed circuits H05K1/00) · CPC title

• H01M10/0445 Primary

  Multimode batteries, e.g. containing auxiliary cells or electrodes switchable in parallel or series connections · CPC title