A battery pack may include a housing; at least one battery cell supported in the housing; a phase change material; and a bladder containing the phase change material, the bladder defining a channel having an opening, the bladder being in a heat transfer relationship with the at least one battery cel
A battery pack may include a housing; at least one battery cell supported in the housing; a phase change material; and a bladder containing the phase change material, the bladder defining a channel having an opening, the bladder being in a heat transfer relationship with the at least one battery cell. The phase change material in the bladder may also surround a portion of the channel. The phase change material may include a paraffin wax.
대표청구항▼
1. A battery pack comprising: a housing;at least one battery cell supported in the housing;a phase change material; anda bladder containing the phase change material, the bladder defining a channel having an opening, the bladder being in a heat transfer relationship with the at least one battery cel
1. A battery pack comprising: a housing;at least one battery cell supported in the housing;a phase change material; anda bladder containing the phase change material, the bladder defining a channel having an opening, the bladder being in a heat transfer relationship with the at least one battery cell. 2. The battery pack of claim 1, wherein the bladder includes an outer wall separated from an inner wall, the phase change material being provided between the outer and inner walls. 3. The battery pack of claim 2, wherein the inner wall defines the channel. 4. The battery pack of claim 2, wherein, when the phase change material increases in volume during a change in phase, the inner wall is configured to collapse the channel. 5. The battery pack of claim 4, wherein the channel is configured to vent air through the opening in the bladder. 6. The battery pack of claim 1, wherein the bladder includes a flange. 7. The battery pack of claim 6, wherein the opening is defined through the flange. 8. The battery pack of claim 1, wherein the plurality of battery cells are evenly positioned about and in a heat transfer relationship with the bladder. 9. A battery pack comprising: a housing;a phase change material;a bladder containing the phase change material and defining a channel, the phase change material surrounding a portion of the channel; anda plurality of battery cells evenly positioned about and in a heat transfer relationship with the bladder. 10. The battery pack of claim 9, wherein the plurality of battery cells are positioned equidistant from the bladder. 11. The battery pack of claim 9, wherein the plurality of battery cells are configured to evenly transfer heat to the phase change material in the bladder. 12. The battery pack of claim 9, wherein the bladder includes an outer wall separated from an inner wall, the phase change material being provided between the outer and inner walls. 13. The battery pack of claim 12, wherein the inner wall defines a boundary of the channel. 14. The battery pack of claim 12, wherein, when the phase change material increases in volume during a change in phase, the inner wall is configured to collapse the channel. 15. The battery pack of claim 14, wherein the bladder defines an opening communicating with the channel, and wherein the channel is configured to vent air through the opening. 16. A battery pack comprising: a housing;a phase change material;at least one bladder containing the phase change material, the at least one bladder includes an inner layer defining a channel; anda plurality of battery cells evenly positioned about, equidistant from and in a heat transfer relationship with the at least one bladder,wherein, when the phase change material increases in volume during a change in phase, the inner layer is configured to collapse the channel. 17. The battery pack of claim 16, wherein the at least one bladder further includes an outer layer spaced from the inner layer, the phase change material being provided between the inner layer and the outer layer. 18. The battery pack of claim 16, wherein bladder defines an opening communicating with the channel, and wherein the channel is configured to discharge air through the opening.
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