BATTERY, BATTERY PACK, AND UNINTERRUPTIBLE POWER SUPPLY

• US 20180048016A1
• Filed: 03/04/2016
• Published: 02/15/2018
• Est. Priority Date: 03/06/2015
• Status: Active Grant

• Current Assignee: Positec Power Tools Company Limited (Positec Group Limited), Pu Chen
• Original Assignee: Positec Power Tools Company Limited (Positec Group Limited)
• Inventors: Chen, Pu, Doan, The Nam Long, Luo, Xiaosong
• Granted Patent: US 10,522,869 B2
• Time in Patent Office: Days
• CPC Class Codes: H01M 10/045 Cells or batteries with folded plate-like electrodes
• CPC Class Codes: H01M 10/052 Li-accumulators
• CPC Class Codes: H01M 10/20 Semi-lead accumulators, i.e. accumulators in which only one electrode contains lead
• CPC Class Codes: H01M 10/36 Accumulators not provided for in groups H01M10/05-H01M10/34
• CPC Class Codes: H01M 2300/0002 Aqueous electrolytes
• CPC Class Codes: H01M 4/366 as layered products
• CPC Class Codes: H01M 4/38 of elements or alloys
• CPC Class Codes: H01M 4/42 Alloys based on zinc
• CPC Class Codes: H01M 4/505 of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
• CPC Class Codes: H02J 7/0013 acting upon several batteries simultaneously or sequentially H02J7/1423 takes precedence
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y02P 70/50 Manufacturing or production processes characterised by the final manufactured product

Abstract

The present invention provides a battery, including a cathode, a anode, and an electrolyte solution. The cathode includes a cathode active substance and a cathode current collector. The electrolyte solution includes first metal ions and second metal ions. In a charging/discharging process, the first metal ions can be reversibly deintercalated-intercalated at the cathode, the second metal ions can be reduced and deposited as a second metal at the anode, and the second metal can be oxidized and dissolved back to the second metal ions. The anode includes a anode active substance and a anode current collector. A lead-containing substance is provided on a surface of the anode active substance and/or in the electrolyte solution. A mass ratio of lead in the lead-containing substance to the battery is not greater than 1000 ppm. The present invention can effectively improve a dendrite problem at a anode of a battery, prolong the cycle life of the battery, and improve the electrochemical performance and safety performance of the battery.

Claims

1. A battery, comprising a cathode, a anode, and an electrolyte solution, wherein the cathode comprises a cathode active substance and a cathode current collector;

the electrolyte solution comprises first metal ions and second metal ions;

in a charging/discharging process, the first metal ions are reversibly deintercalated-intercalated at the cathode, the second metal ions are reduced and deposited as a second metal at the anode, and the second metal is oxidized and dissolved back to the second metal ions;

the anode comprises a anode active substance and a anode current collector;

a composite cathode material, where the composite cathode material includes a cathode active substance and a coating layer, the cathode active substance includes a lithium ion intercalation/deintercalation compound, and the coating layer is at least one of metallic lead, lead monoxide, or lead tetroxide.

2. The battery according to claim 1, wherein a surface of the cathode active substance is provided with a coating layer, and the coating layer is metallic lead and/or lead oxide.

3. The battery according to claim 1, wherein the battery comprises an additive of a bismuth compound, and the bismuth compound is added to the anode and/or the electrolyte solution.

4. The battery according to claim 1, wherein the anode active substance comprises zinc, and the anode current collector comprises brass foil.

5. The battery according to claim 1, wherein the cathode current collector comprises a nylon mesh carrier and graphite foil that is coated on the nylon mesh carrier.

6. The battery according to claim 1, wherein the first metal ions comprise lithium ions, sodium ions, or magnesium ions, and the second metal ions comprise zinc ions.

7. The battery according to claim 1, wherein a lead-containing substance is provided on a surface of the anode active substance and/or in the electrolyte solution;

and a mass ratio of lead in the lead-containing substance to the battery is not greater than 1000 ppm.

8. The battery according to claim 7, wherein the lead-containing substance on the surface of the anode active substance comprises a lead metal.

9. The battery according to 7, wherein the lead-containing substance in the electrolyte solution comprises lead ions.

10. The battery according to claim 7, wherein a mass ratio of lead in the lead-containing substance in the electrolyte solution to the electrolyte solution is not less than 10 ppm.

11. The battery according to claim 7, wherein the lead-containing substance comprises at least one of metallic lead, lead sulfate, or lead oxide

12. The battery according to claim 1, wherein the cathode active substance comprises a modified lithium manganese oxide material, and the modified lithium manganese oxide material meets a general formula Li_1+xMn_yM_zO_k, wherein M is selected from Pb, −

1≦

x≦

0.5, 1≦

y≦

2.5, 0<

z≦

0.1, and 3≦

k≦

6.

13. The battery according to claim 12, wherein a mass percentage of lead in the metallic lead and/or the lead oxide in the cathode active substance is in the range of 0.001%-10%.

14. A battery pack, comprising several batteries according claim 1.

15. An uninterruptible power supply, comprising the battery according to claim 1.