Bipolar capacitor assisted battery

Patent metadata

Field	Value
Publication number	US-12176510-B2
Application number	US-202117542974-A
Country	US
Kind code	B2
Filing date	Dec 6, 2021
Priority date	Nov 12, 2021
Publication date	Dec 24, 2024
Grant date	Dec 24, 2024

Abstract

A bipolar capacitor assisted battery includes a bipolar capacitor including a first capacitor, and a second capacitor. The second capacitor is connected in series with the first capacitor. A lithium ion battery is connected in parallel to the bipolar capacitor.

First claim

What is claimed is:

1. A bipolar capacitor assisted battery, comprising:
a bipolar capacitor including:
a first positive terminal;
a first capacitor connected to the first positive terminal;
a second capacitor; and
a first negative terminal connected to the second capacitor,
wherein the second capacitor is connected in series with the first capacitor; and

a lithium ion battery connected in parallel to the bipolar capacitor and abutted against the first negative terminal of the bipolar capacitor, the lithium ion battery including a third anode abutted against the first negative terminal of the bipolar capacitor, a third separator connected to the third anode, a cathode connected to the third separator, and a second positive terminal connected to the cathode.

2. The bipolar capacitor assisted battery of claim 1 , wherein:
the first capacitor of the bipolar capacitor includes a first capacitor electrode directly connected to the first positive terminal, a first separator connected to the first capacitor electrode and a first anode connected to the first separator;
the bipolar capacitor includes a current collector connected to the first anode;
the second capacitor of the bipolar capacitor includes a second capacitor electrode connected to the current collector, a second separator connected to the second capacitor electrode, and a second anode; and
the first negative terminal of the bipolar capacitor is directly connected to the second anode.

3. The bipolar capacitor assisted battery of claim 2 , wherein the lithium ion battery comprises:
a third anode connected to the first negative terminal, a third separator connected to the third anode and a first cathode connected to the third separator;
a second positive terminal connected to the first cathode;
a second cathode connected to the second positive terminal, a fourth separator connected to the second anode and a fourth anode connected to the fourth separator;
a second negative terminal connected to the fourth anode;
a fifth anode connected to the second negative terminal, a fifth separator connected to the fifth anode and a third cathode connected to the fifth separator;
a third positive terminal connected to the third cathode; and
a fourth cathode connected to the third positive terminal, a sixth separator connected to the fourth cathode and a sixth anode connected to the sixth separator.

4. The bipolar capacitor of claim 2 , further comprising a blocking material arranged on at least the first separator of the first capacitor and the second separator of the second capacitor.

5. The bipolar capacitor of claim 3 , wherein the bipolar capacitor uses a first liquid electrolyte and the lithium ion battery uses the first liquid electrolyte.

6. The bipolar capacitor of claim 3 , wherein the bipolar capacitor uses a first liquid electrolyte and the lithium ion battery uses a second liquid electrolyte that is different than the first liquid electrolyte.

7. The bipolar capacitor of claim 3 , wherein the bipolar capacitor uses a liquid electrolyte and the lithium ion battery uses a solid electrolyte.

8. The bipolar capacitor of claim 3 , wherein the bipolar capacitor uses a solid electrolyte and the lithium ion battery uses a liquid electrolyte.

9. The bipolar capacitor of claim 3 , wherein the bipolar capacitor uses a solid electrolyte and the lithium ion battery uses a solid electrolyte.

10. The bipolar capacitor assisted battery of claim 2 , wherein the lithium ion battery is bipolar and includes M lithium ion batteries connected in series, where M is an integer greater than one.

11. The bipolar capacitor assisted battery of claim 2 , wherein the cathode is a first cathode and the lithium ion battery comprises:
a first current collector connected to the first cathode;
a fourth anode connected to the first current collector, a fourth separator connected to the fourth anode and a second cathode connected to the fourth separator;
a second current collector connected to the second cathode;
a fifth anode connected to the second current collector, a fifth separator connected to the fifth anode and a third cathode connected to the fifth separator; and
a second positive terminal connected to the third cathode.

12. The bipolar capacitor of claim 11 , further comprising a blocking material arranged on at least the first separator, the second separator and the third separator of the lithium ion battery.

13. The bipolar capacitor of claim 11 , wherein the bipolar capacitor uses a first liquid electrolyte and the lithium ion battery uses the first liquid electrolyte.

14. The bipolar capacitor of claim 11 , wherein the bipolar capacitor uses a first liquid electrolyte and the lithium ion battery uses a second electrolyte that is different than the first liquid electrolyte.

15. The bipolar capacitor of claim 11 , wherein the bipolar capacitor uses a first liquid electrolyte and the lithium ion battery uses a second electrolyte that is different than the first liquid electrolyte.

16. The bipolar capacitor of claim 11 , wherein the bipolar capacitor uses a solid liquid electrolyte and the lithium ion battery uses a liquid electrolyte.

17. The bipolar capacitor of claim 11 , wherein the bipolar capacitor uses a liquid electrolyte and the lithium ion battery uses a solid electrolyte.

18. The bipolar capacitor of claim 11 , wherein the bipolar capacitor uses a solid electrolyte and the lithium ion battery uses a solid electrolyte.

19. The bipolar capacitor of claim 1 , wherein the bipolar capacitor comprises a lithium ion capacitor (LIC).

20. The bipolar capacitor of claim 1 , wherein the bipolar capacitor comprises an electric double layer capacitor (EDLC).

Assignees

• Gm Global Tech Operations Llc

Inventors

• Liu Jingyuan
• Kong Dewen
• Li Zhe
• Wu Meiyuan
• Liu Haijing

Classifications

• H01G11/08 Primary

  Structural combinations, e.g. assembly or connection, of hybrid or EDL capacitors with other electric components, at least one hybrid or EDL capacitor being the main component · CPC title

• H01G11/56

  Solid electrolytes, e.g. gels; Additives therein · CPC title

• H01G11/58

  Liquid electrolytes · CPC title

• H01G11/52

  Separators · CPC title

• H01G11/28

  arranged or disposed on a current collector; Layers or phases between electrodes and current collectors, e.g. adhesives · CPC title