BATTERY PACK WITH IMPROVED HEAT DISSIPATION EFFICIENCY

• US 20110039142A1
• Filed: 06/29/2010
• Published: 02/17/2011
• Est. Priority Date: 08/12/2009
• Status: Active Grant

• Current Assignee: Samsung SDI Company Limited
• Original Assignee: Samsung SDI Company Limited
• Inventors: An, Jin-Hong, Doh, Watson, Byun, Jeong-Deok, Seo, Kyung-Won, Kwag, No-Hyun, Han, Jung-Yub
• Granted Patent: US 8,945,746 B2
• Time in Patent Office: Days
• US Class Current: 429/99
• CPC Class Codes: G01V 3/08 operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices with electromagnetic waves G01V3/12
• CPC Class Codes: G01V 3/081 the magnetic field is produced by the objects or geological structures characterised by the method of magnetic field measurement G01R33/00
• CPC Class Codes: G01V 3/10 using induction coils
• CPC Class Codes: G01V 3/12 operating with electromagnetic waves operating with millimetre waves G01V8/005
• CPC Class Codes: G01V 3/36 Recording data G01V3/34 takes precedence
• CPC Class Codes: H01M 10/613 Cooling or keeping cold
• CPC Class Codes: H01M 10/643 Cylindrical cells
• CPC Class Codes: H01M 10/6557 arranged between the cells
• CPC Class Codes: H01M 10/6562 with free flow by convection only
• CPC Class Codes: H01M 10/6563 with forced flow, e.g. by blowers
• CPC Class Codes: H01M 50/213 adapted for cells having curved cross-section, e.g. round or elliptic H01M50/209, H01M50/216 take precedence
• CPC Class Codes: H01M 50/284 with incorporated circuit boards, e.g. printed circuit boards [PCB]
• CPC Class Codes: H01M 50/509 characterised by the type of connection, e.g. mixed connections
• CPC Class Codes: H01M 50/51 Connection only in series
• CPC Class Codes: H01M 50/512 Connection only in parallel
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

Provided is a battery pack with improved heat dissipation efficiency. The battery pack includes a holder case, and a plurality of batteries disposed inside the holder case. The holder case includes a plurality of ribs disposed inside the holder case. Each of the ribs has a column extending in a direction substantially parallel to a side surface of the holder case, and each of the batteries is accommodated between the columns of the ribs. The column has a heat dissipation hole therein extending along the extension direction of the column. An air flow is formed through the heat dissipation hole, and heat generated during a charge and/or discharge operation dissipates through the air flow in the heat dissipation hole. A portion of the columns are separated from each other forming a gap. The heat generated from the batteries also dissipates through this gap.

Claims

1. A battery pack comprising:

a holder case; and

a plurality of batteries disposed inside the holder case, the holder case comprising;

a plurality of ribs disposed inside the holder case, each of the ribs comprising a column extending in a direction substantially parallel to a side surface of the holder case, each of the batteries being accommodated between the columns of the ribs, the column having a heat dissipation hole therein extending along the extension direction of the column.

2. The battery pack of claim 1, wherein the each of the ribs further comprises a first fin extending in a first direction from the column, and a second fin extending in a second direction from the column.

3. The battery pack of claim 2, wherein an end of the column is dispose around a back surface of the holder case, the column extending towards a front surface of the holder case, each of the back and front surfaces being substantially perpendicular to the side surface of the holder case.

4. The battery pack of claim 3, wherein the first and the second tins are disposed around the end of the column.

5. The battery pack of claim 2, wherein the first fins of the ribs are connected to each other, and the second fins of the ribs are connected to each other.

6. The battery pack of claim 2, wherein each of the first and the second direction is substantially perpendicular to the extension direction of the column.

7. The battery pack of claim 1, wherein a first gap is formed between two of columns of the ribs.

8. The battery pack of claim 1, further comprising a lead plate disposed on a front or back surface of the holder case, the lead plate electrically connecting one of the batteries to another of the batteries.

9. The battery pack of claim 1, wherein the column further comprises at least one sub-column, the sub-column extending in the extension direction of the column.

10. The battery pack of claim 9, wherein the column includes more than one sub-columns, and a second gap is formed between two of the more than one sub-columns.

11. The battery pack of claim 10, wherein the heat dissipation hole is surrounded by at least two of the more than one sub-columns.

12. The battery pack of claim 1, further comprising a frame for forming an outline of the holder case.

13. The battery pack of claim 1, wherein at least one of the batteries includes a secondary battery.

14. A battery pack comprising:

a holder case; and

a plurality of batteries disposed inside the holder case, the holder case comprising;

a plurality of ribs disposed inside the holder case, each of the ribs comprising a column extending in a direction substantially parallel to a side surface of the holder case, each of the batteries being accommodated between the columns of the ribs, the column having a heat dissipation channel formed therein, heat radiated from the batteries dissipating through the heat dissipation channel.

15. The battery pack of claim 14, wherein the heat dissipation channel includes a heat dissipation hole extending along the extension direction of the column.

16. The battery pack of claim 14, wherein the column includes sub-columns, the heat dissipation channel including a second gap formed between two of the sub-columns.

17. The battery pack of claim 16, wherein the column further includes a heat dissipation hole extending along the extension direction of the column, the heat dissipation hole being surrounded by at least two of the sub-columns.

18. The battery pack of claim 14, wherein the each of the ribs further comprises a first fin extending in a first direction from the column, and a second fin extending in a second direction from the column.

19. The battery pack of claim 14, wherein a first gap is formed between two of columns of the ribs.

20. The battery pack of claim 14, further comprising a lead plate disposed on a front or back surface of the holder case, the lead plate electrically connecting one of the batteries to another of the batteries.