Protective device, protective device system and protective method of power battery
A power battery and protection device technology, which is applied in the field of power systems, can solve the problems of short board effect of battery packs and performance decline of single batteries
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[0046] Example 1
[0047] Such as figure 1 Shown is an embodiment of a power battery protection device of the present invention. The power battery protection device 100 includes a battery box housing 101, a glycol 104 and a water pump 106. The battery 105 is placed inside the ethylene glycol 104 in the battery box housing 101, and the water pump 106 forcibly circulates the ethylene glycol 104 in the battery box housing 101, so that the individual cells of the battery 105 are at an equilibrium temperature. In the environment, the emergence of the single battery problem is avoided, the short board effect is prevented, and the service life of the battery is prolonged. In addition, the liquid-sealed battery pack 105 is isolated from oxygen, which also avoids fire. The air-conditioning condenser 103 passes through the battery box housing 101 and contacts the ethylene glycol 104 in the battery box housing. When the external high-temperature vehicle air conditioner is turned on, the a...
Example Embodiment
[0050] Example 2
[0051] Such as figure 2 Shown is an embodiment of a power battery protection device system of the present invention. The power battery in this embodiment includes two battery groups 205 and 205' ( figure 2 The connection lines between the battery groups are not shown in the figure). Accordingly, the battery protection device system 200 includes two battery boxes connected in series, and the two battery groups 205 and 205' are respectively placed in the two battery boxes. As in the first embodiment, the outer surface of the battery box housing 201 (201') is coated with a fireproof insulation layer 202 (202'), and the battery box housing 201 (201') is loaded with ethylene glycol 204. However, in this embodiment, the two battery box housings 201 and 201' are connected through two liquid channels 207 and 207', so that the ethylene glycol 204 in the battery box housing 201 and the ethylene glycol 204 in the battery box housing 201' are connected. Alcohol 204 is co...
Example Embodiment
[0053] Example 3
[0054] Such as image 3 Shown is another embodiment of a power battery protection device of the present invention. The power battery protection device 300 includes a battery box inner shell 301, a battery box outer shell 302, glycol 304, a liquid tank 307, a liquid pipe 308 (308') and a circulating water pump 306. The inner shell 301 of the battery box is made of metal materials, such as aluminum or stainless steel, which is used to shield the electromagnetic radiation of the battery pack 305; the outer shell 302 of the battery box is made of fireproof and heat-insulating materials, such as high silica glass fiber composite materials, of course. Other fireproof and thermal insulation materials are used to block the outside temperature, avoid the influence of the environment of the vehicle on the internal glycol 304 and battery pack 305 of the power battery protection device, and also have a fireproof effect. A closed space is formed between the outer shell 302...
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