System and method for facilitating conditioning and testing of rechargeable battery cells

Patent metadata

Field	Value
Publication number	US-11043823-B2
Application number	US-201815946635-A
Country	US
Kind code	B2
Filing date	Apr 5, 2018
Priority date	Apr 6, 2017
Publication date	Jun 22, 2021
Grant date	Jun 22, 2021

Abstract

One embodiment can provide a system for conditioning rechargeable battery cells. The system can include a cell-group conditioning module. The cell-group conditioning module can include a cell interface block that includes a cell contact module and a circuit module. The circuit module can be configured to supply power to cells and can be positioned adjacent to the cell contact module. The cell-group conditioning module can further include a cell platform configured to accommodate a number of cells and an actuation mechanism coupled to the cell interface block or the cell platform and configured to reduce a distance between the cell interface block and cell platform, thereby allowing the cell contact module to establish electrical contact with the cells.

First claim

What is claimed is:

1. A system for conditioning rechargeable battery cells, the system comprising:
a cell-group conditioning module, comprising:
a cell interface block comprising a cell contact module and a circuit module, wherein the circuit module is configured to supply power to battery cells and is positioned adjacent to the cell contact module;
a cell platform configured to accommodate a number of the battery cells; and

an actuation mechanism coupled to the cell interface block or the cell platform and configured to reduce a distance between the cell interface block and cell platform, thereby allowing the cell contact module to establish electrical contact with the battery cells.

2. The system of claim 1 , wherein the cell contact module comprises a number of receptacles; and
wherein a respective receptacle comprises a number of probes configured to establish positive and negative contact with a corresponding cell on a same end of the cell.

3. The system of claim 2 , wherein at least one of the probes is a Kelvin probe configured to provide two separate contact points with the cell.

4. The system of claim 2 , wherein a respective receptacle comprises an edge with an angled surface, thereby forming a converging cup for cell alignment.

5. The system of claim 1 , further comprising a number of cell-group conditioning modules electrically coupled in series and configured to divide a direct current (DC) voltage.

6. The system of claim 1 , further comprising a heat dissipating mechanism coupled to the circuit module.

7. The system of claim 6 , wherein the heat dissipating mechanism comprises a heat pipe attached to the circuit module coupled a cold plate, which is attached to a liquid cooling system.

8. The system of claim 1 , further comprising an additional number of cell-group conditioning modules;
wherein a first cell-group conditioning module is configured to discharge a first group of battery cells while a second cell-group conditioning module is charging a second group of battery cells; and
wherein energy released by the first group of battery cells is used to charge the second group of battery cells.

9. The system of claim 1 , wherein the circuit module comprises power supply and measurement circuitry for each battery cell being conditioned.

10. A method for conditioning rechargeable battery cells, the method comprising:
receiving a first group of battery cells;
loading the first group of battery cells onto a platform;
activating an actuation mechanism coupled to a cell interface block, wherein the actuation mechanism is activated to reduce a distance between the cell interface block and the platform thereby causing establishment of electrical contact between the first group of battery cells and the cell interface block, wherein the cell interface block comprises a cell contact module and a circuit module, and wherein the circuit module is configured to supply power to the first group of battery cells; and
performing charging and discharging cycles to the first group of battery cells.

11. The method of claim 10 , further comprising:
discharging the first group of battery cells while charging a second group of battery cells, wherein energy produced by the first group of battery cells is used to charge the second group of battery cells.

12. The method of claim 10 , further comprising:
supplying a liquid coolant to a cooling mechanism,
wherein the cooling mechanism comprises a heat pipe and a cold plate,
wherein the cold plate is liquid cooled, and
wherein the heat pipe is coupled to the cell interface block.

13. A delivery system for conditioning rechargeable battery cells, the system comprising:
one or more cell-group conditioning container, each cell-group conditioning container configured to accommodate multiple battery cells grouped together;
one or more staging areas configured to store the cell-group conditioning containers prior to conditioning the battery cells;
a cell interface block comprising a cell contact module and a circuit module, wherein the circuit module is configured to supply power to the battery cells and is positioned adjacent to the cell contact module;
a cell platform configured to accommodate the battery cells during conditioning; and
a crane configured to transport the cell-group conditioning containers from the staging areas to the cell platform and further configured to create an electrical contact between the battery cells in the cell-group conditioning container and the cell contact module.

14. The delivery system of claim 13 , wherein the cell contact module includes rails configured to establish the electrical contact.

15. The delivery system of claim 14 , wherein the crane is configured to guide the one or more cell-group conditioning containers to a rack via respective rails.

16. The delivery system of claim 13 , wherein clamps of the cell-group conditioning container are configured to mate with the cell contact module.

Assignees

• Tesla Inc

Inventors

• Matthews Kevin
• Caldwell Turner
• Sukup Martin

Classifications

• H01M10/482

  for several batteries or cells simultaneously or sequentially · CPC title

• H01M50/284

  with incorporated circuit boards, e.g. printed circuit boards [PCB] · CPC title

• H01M50/213

  adapted for cells having curved cross-section, e.g. round or elliptic (H01M50/209, H01M50/216 take precedence) · CPC title

• H01M10/049 Primary

  Processes for forming or storing electrodes in the battery container · CPC title

• Y02P70/50

  Manufacturing or production processes characterised by the final manufactured product · CPC title