# US 12,763,594 B2 · Charging and discharging device for secondary battery

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- Number: US 12,763,594 B2
- Document ID: US12763594B2
- Status: Granted
- Kind: B2
- Application number: 18/022,811
- Filed: 2021-09-15
- Published: 2023-09-28
- Granted: 2026-10-13
- Earliest claimed: 2020-09-15
- Assignees: LG Energy Solution, Ltd.
- Applicants: LG Energy Solution, Ltd.
- Inventors: Ki Hoon Kim
- Web page: https://patentgrep.com/patent/US12763594B2

## CPC

- H02J 7/751: {concerning the insertion or the connection of the batteries}
- H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY

## Abstract

A charging and discharging device for secondary battery includes a body portion; and a head portion located under the body portion, wherein the head portion comprises a pin mounting portion that is bound to the upper portion or lower portion of the secondary battery, wherein the pin mounting portion includes a current pin and a voltage pin, wherein the current pin and the voltage pin each comprises a plurality of projections, and wherein an area where the current pin is formed is larger than an area where the voltage pin is formed.

## Claims

### Claim 1

A charging and discharging device for a secondary battery, comprising:
a body portion; and
a head portion located under the body portion,
wherein the head portion comprises a pin mounting portion configured to be bound to an upper portion or a lower portion of the secondary battery,
wherein the pin mounting portion comprises a current pin and a voltage pin,
wherein the current pin and the voltage pin each comprise a plurality of projections,
wherein an area where the current pin is formed is larger than an area where the voltage pin is formed,
wherein the current pin is formed in a center of the pin mounting portion,
wherein the voltage pin is formed at a periphery of the pin mounting portion so as to surround the current pin,
wherein the current pin has a diameter of 0.5 or more and 0.9 or less times a diameter of the pin mounting portion.

### Claim 2 (depends on 1)

The charging and discharging device for the secondary battery according to claim 1, wherein:
the current pin is formed in a maximum area in the pin mounting portion, and
the voltage pin is formed in a minimum area in the pin mounting portion.

### Claim 3 (depends on 1)

The charging and discharging device for the secondary battery according to claim 1, wherein:
the current pin is formed in an area of 70% or more and 99% or less of a total area of the pin mounting portion, and
the voltage pin is formed in an area of 1% or more and 15% or less of the total area of the pin mounting portion.

### Claim 4 (depends on 1)

The charging and discharging device for the secondary battery according to claim 1, wherein:
the current pin and the voltage pin are spaced apart from each other by a first distance.

### Claim 5 (depends on 4)

The charging and discharging device for the secondary battery according to claim 4, wherein:
the first distance is between 0.01 to 0.5 times a diameter of the pin mounting portion.