A battery pack dehumidification method, dehumidification device and vehicle
A battery pack and battery technology, which is applied in battery/fuel cell control devices, electric vehicles, control devices, etc., can solve the problems of adverse effects, high cost and power consumption, and the dehumidification chamber cannot be kept well sealed to achieve stable and powerful operation Effect
Active Publication Date: 2021-05-14
BYD CO LTD
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Problems solved by technology
However, the dehumidification effect and effective time of placing a moisture-proof agent are limited, and it needs to be replaced regularly; and the cost and power consumption of installing a gas circulation drying filter on the battery pack box are high
[0004] The prior art discloses a dehumidification method, which collects condensed water through an electric field and removes the water droplets through capillary tubes, but the condensed water droplets may have caused adverse effects on the high-voltage circuit connection terminals or the connectors of the battery information collector
[0005] The prior art also discloses another dehumidification method. A dehumidification chamber is added in front of the battery compartment. The dehumidification chamber condenses the air that enters to cool the battery, thereby removing moisture in the air, but other ways leak into the battery pack box. Water vapor cannot be removed, and the dehumidification chamber cannot maintain a good seal in contact with the outside air
Method used
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[0036] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.
[0037] Such as figure 1 As shown, the embodiment of the first aspect of the present invention proposes a battery pack dehumidification method, comprising the following steps: condensing the air in the battery pack box; collecting water condensed from the air; detecting the water level of the condensed water; When the water level of the water reaches the set water level value, the condensed water will be discharged.
[0038] According to the dehumidification method of the present invention, the water vapor is condensed...
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The present invention proposes a battery pack dehumidification method, comprising the following steps: condensing the air in the battery pack box; collecting water condensed from the air; when the water level of the condensed water reaches a set water level value, The condensed water was drained off. According to the dehumidification method of the present invention, the water vapor is condensed into water and collected and discharged in time, which can not only avoid the adverse effects of water vapor condensing on the connectors and connecting terminals in the battery pack, but also in the sealed environment of the battery pack box. Other water vapor will be introduced, which can effectively and reliably remove the water vapor in the battery pack box. The invention also provides a battery pack dehumidification device and a vehicle.
Description
technical field [0001] The invention relates to a battery pack dehumidification method, a dehumidification device and a vehicle. Background technique [0002] The sealing and waterproofing of the battery pack box of electric vehicles has long been an important problem that is difficult to solve, especially for electric trucks and special vehicles that use external battery packs, the sealing contact surface is large and the operating environment is harsh. As a result, a good seal cannot always be maintained. After water vapor invades the battery pack, it condenses on the connectors of the battery information collector, high-voltage connecting lines, etc., which will cause problems such as failure of battery sampling information transmission, leakage of high-voltage circuit to the body, and failure of the vehicle to charge and drive normally. [0003] In order to solve this problem, in addition to improving the sealing of the battery pack box, measures such as placing a moist...
Claims
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IPC IPC(8): B60L58/10B60H3/02
CPCB60H3/024B60L2240/54Y02T10/70
Inventor 贺静谭先华田浩鲁国健
Owner BYD CO LTD