Cooling structure of power storage device
A technology of power storage device and cooling structure, applied in the direction of structural parts, control device, battery/battery traction, etc., can solve problems such as deterioration, inhalation, battery temperature rise, etc.
Active Publication Date: 2016-08-17
HONDA MOTOR CO LTD
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Problems solved by technology
[0008] However, in the structure of the above-mentioned prior art, since the internal pressure of the battery case is lower than the atmospheric pressure by the suction force of the blower fan, in addition to the original cooling air sucked in from the suction passage, it is also possible to suck the external air from the gap of the battery case. Air
The suction duct sucks the air in the air-conditioned interior of the motor vehicle into the battery case, but when the battery case is placed in the trunk room of the motor vehicle, the air in the trunk room whose temperature has The above-mentioned gap is sucked into the battery case, which causes the temperature of the battery to rise and become a cause of deterioration.
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[0050]Below, based on Figure 1 to Figure 6 , to describe the embodiment of the present invention.
[0051] Such as figure 1 and figure 2 As shown, the power storage device 11 of the hybrid vehicle is mounted in the trunk room at the rear of the vehicle body. The electric storage device 11 includes a box-shaped electric storage unit case 12 , and in a pair of air intake passages 13 , 13 extending forward from both ends of the electric storage unit case 12 in the vehicle width direction, an air intake port 13 a at the front end, 13 a opens into the vehicle interior at both ends in the vehicle width direction of the rear seat 14 . Moreover, the exhaust passage 15 extends from the right side of the electric storage unit case 12 toward the outside in the vehicle width direction. An electric cooling fan 16 composed of a Sirocco fan or the like is connected to the front end of the exhaust passage 15. The exhaust of the cooling fan 16 The air port 16a opens to the lower surface ...
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The present invention provides a cooling structure for an electric storage device that prevents the cooling performance of the electric storage unit from being impaired by sucking in air from a gap in an electric storage unit case that accommodates the electric storage unit. A flow path resistance portion blocking part of the cooling air is disposed between the cooling passage and the cooling fan, so even if cooling air is sucked by the cooling fan, a large flow path resistance portion is generated downstream of the flow path resistance portion. The negative pressure is also difficult to spread to the cooling passage on the upstream side of the flow path resistance part, and it can prevent the external warm air from being sucked into the cooling passage from the gap of the electric storage unit case to reduce the cooling effect of the electric storage unit. decline. Moreover, since the cooling air chamber for temporarily accumulating cooling air is provided between the cooling passage and the flow passage resistance part, the internal pressure of the cooling passage is less likely to drop due to the buffering effect of the cooling air chamber, and it is possible to more reliably prevent from The gaps in the battery case draw in warm air from the outside.
Description
technical field [0001] The present invention relates to a cooling structure for an electric storage device, the electric storage device includes: an electric storage unit case; a plurality of electric storage units accommodated inside the electric storage unit case; A plurality of cooling passages formed between the electric units; an air intake passage connected to the upstream side of the electric storage unit case; an exhaust passage connected to the downstream side of the electric storage unit case; The passage is connected to a cooling air suction mechanism that sucks cooling air into the suction passage. Background technique [0002] According to the following patent document 1, the following technology is known: an inflow passage and a discharge passage are respectively provided on the upstream side and the downstream side of a battery case for accommodating a plurality of batteries, and a blower fan connected to the downstream of the discharge passage is used to flow...
Claims
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IPC IPC(8): H01M10/613H01M10/6561B60L50/64
CPCH01M50/24H01M50/209B60L50/64H01M50/249B60L2240/545H01M10/625H01M10/663H01M10/6563H01M10/647H01M10/6557H01M10/613Y02E60/10
Inventor 平西亨高桥广一宫本哲
Owner HONDA MOTOR CO LTD