Battery pack

Abstract

The present invention relates to a battery pack. The battery pack according to the present invention is a battery pack including a battery module, and the battery module includes a cell stack in which a number of battery cells are stacked, a flexible circuit board that transmits information about the battery cells, a module housing that accommodates the cell stack and the flexible circuit board, a wireless transmitting BMS (Battery Management System) that receives information about the battery cells from the flexible circuit board, and a BMS storage section that is provided on the outside of the module housing and accommodates the wireless transmitting BMS.

Claims

1. A battery pack including a battery module, The aforementioned battery module is A cell stack consisting of multiple battery cells stacked on top of each other, A flexible circuit board that transmits information about the battery cell, A module housing that accommodates the cell stack and the flexible circuit board, A wireless transmitter BMS (Battery Management System) that receives information about the battery cells from the flexible circuit board, The module housing includes a BMS storage section located on the outside of the module housing for housing the wireless transmitter BMS, The aforementioned BMS storage section is A battery pack comprising a storage case having a recessed storage groove for housing the aforementioned wireless transmitter BMS, wherein the storage groove opens to the outside of the module housing.

2. The battery pack according to claim 1, wherein the storage case is fastened to the outer part of the module housing by fastening means.

3. The aforementioned storage case includes: The battery pack according to claim 2, wherein a fastening hole is formed through which the fastening means penetrates and fastens.

4. The aforementioned BMS storage section is The battery pack according to claim 1, further comprising a lid that covers the opening of the storage groove.

5. The aforementioned storage case has connecting protrusions formed therein. The battery pack according to claim 4, wherein the cover has a coupling hole into which the coupling projection connects.

6. The module housing is A stack housing section is formed inside in which the cell stack is housed, and the body is hollow with openings on both sides, The body includes an end plate that covers the opening of the main body, The battery pack according to claim 1, wherein the BMS storage section is attached to the end plate.

7. After the cell stack is housed in the stack housing section, an empty space, or excess space, is formed inside the main body. The end plate has a recessed mounting groove on the inside of the module housing so as to occupy the excess space. The battery pack according to claim 6, wherein the BMS storage section is housed in the mounting groove and mounted on the end plate.

8. The battery pack according to any one of claims 1 to 7, wherein the wireless transmitter BMS includes a connection portion to which the end of the flexible circuit board is connected.

9. The battery pack according to any one of claims 1 to 7, wherein the wireless transmitter BMS includes a wireless transmitting unit that wirelessly transmits information signals of the battery cells received from the flexible circuit board.

10. The aforementioned battery pack is The battery pack according to any one of claims 1 to 7, further comprising a wireless receiving BMS that wirelessly receives information signals from the wireless transmitting BMS.

11. The aforementioned wireless receiver BMS is The battery pack according to claim 10, wherein the state of the battery cell is determined via the information signal of the battery cell that has been transmitted, and the charging and discharging of the battery cell is controlled so as to maintain an appropriate battery state.

12. The battery pack according to claim 11, wherein the information signal of the battery cell is at least one of the remaining capacity, voltage, and temperature signals of the battery cell.

13. The aforementioned battery module is composed of a large number of units. The battery pack further includes a pack case that houses a number of the battery modules inside, The battery pack according to claim 10, wherein the wireless receiving BMS is installed inside the pack case and receives information signals from the battery cells located in each of the numerous battery modules from the wireless transmitting BMS provided in each of the battery modules.

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