How does lithium battery solve waterproof issue?

The lithium battery waterproof issue

Whether does the lithium battery need waterproof protection accords to the requirements of the battery corresponding products to do, in general lithium battery pack is not waterproof, need waterproof design of lithium battery PACK will be higher than normal battery PACK cost, but also need to use battery products have waterproof requirements must do the waterproof processing.

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The utility model discloses a kind of power lithium ion batteries group of waterproof device, battery box body openings around the fold edge inside, inside the fold along the pressed flange, as described on the flange of the disk with a sealing strip placement groove, the flange plate processing has a threaded hole with battery box cover, cover of battery box set with corresponding sealing flange hole, the sides of the battery box cover to the outer edge.The technical scheme can guarantee the vehicle at run time, can effectively prevent water and dust invasion, effective protection performance of the battery pack.

The utility model relates to a device power lithium ion battery pack waterproof, suitable for electric vehicle use, especially can effectively prevent water and dust intrusion, effective protection performance of the battery pack.

At present, the battery in the electric vehicle's position is basically in the chassis, when there will be a wading phenomenon in the process of vehicle running, and the structure of the existing battery box body generally for thin sheet metal parts by shear bending welded together, and the sealing part is on the battery box along the fold inward 12 to 20 mm length, then through battery box cover bedding face and fold along the part of the seal on the basis of glue, there are two problems with this way of packing, it is because there is no glue tank, when the two layers of steel plate is bolt after extrusion, plastic will be squeezed out, have certain waterproof, such as uneven glue, waterproof effect is poor in some places.Second, battery maintenance, glue is difficult to remove, battery box cover is not easy to be taken, forced to take down after the battery box cover is easy deformation, battery maintenance in good condition and to glue sealing, because the original glue has hardened, is not easy to clean, glue sealing effect is worse again.

The task of the utility model is a good seal effect, water, dust, and secure, stable structure of a device power lithium ion battery pack waterproof.

The task of the utility model is completed, a kind of power lithium ion battery pack waterproof device, its character is that: the battery box opening around the fold edge inside, inside the fold along the pressed flange, as described on the flange of the disk with a sealing strip placement groove, the flange plate processing has a threaded hole with battery box cover, cover of battery box set with corresponding sealing flange hole, the sides of the battery box cover to the outer edge.Described in the interior of the battery box body is a cavity, its processing is placed at the bottom of the nut pits, stated at the bottom of the flanging height is battery box cover withhold overlap each other across the opening in the battery box seal shall prevail.Described in the shape of the sealing strip can be used with type O, rectangular sealing strip, fastener can be used as stated in the screw, nut and spring washer.

This technical solution is in the battery box placed between the I and the battery box cover 2 flange 7, again through the fastener 4 seal.Specific implementation such as shown in figure 1, inside of battery case I described is a cavity, power lithium ion battery are placed inside the cavity, the battery box opening inward folding along all round, being connected with flange 7 fold edge inside, the flange in 7 disk sealing strip with placed on 3 grooves, the shape of the sealing strip can be used with type O or rectangle, the flange plate processing and battery box cover fastening threaded hole, its processing is placed at the bottom of the nut pits, described in the battery box cover 2 sets with corresponding sealing flange hole, the sides of the battery box cover to the outer edge, flanging height is battery box cover withhold overlap each other across the opening in the battery box seal shall prevail, the assembly, the battery box cover on the battery box opening, the fastener through the battery box cover screw thread hole in the hole and the flange plate, the spring washer 5 and 6 installed at the pit of the flange nut fastening, sealing strip between the battery box cover and flange pressure tight seal by fasteners, have the effect of sealing, fastener can be used as stated in the screw, nut, spring washer, etc.Described in the groove of the sectional area of the flange plate can be a semicircle, rectangle, square, oval, described the groove is around the battery case for a week.

In order to avoid water from the threaded flange holes into the lumen of the battery case I, threaded hole can be made into blind holes on the flange 7, this structure does not need spring washer and nut 5 6, described in the battery box body between the I and 7 flange plate can be welded into a whole, such as using the above welding, battery box body between the flange and inside the box body full welding, or on the battery box body along with flange by casting sheet metal rolling forming structure of a whole, in order to achieve waterproof effect.

A power lithium ion battery pack waterproof device, its character is that: the battery box opening inward folding along all round, inside the fold along the pressed flange, as described on the flange of the disk with a sealing strip placement groove, the flange plate processing has a threaded hole with battery box cover, cover of battery box set with corresponding sealing flange hole, the sides of the battery box cover to the outer edge.

According to claim 1 a kind of power lithium ion battery pack waterproof device, its character is that: the interior of the battery box body is referred to in a cavity, its processing is placed at the bottom of the nut pits, stated at the bottom of the flanging height is battery box cover withhold overlap each other across the opening in the battery box seal shall prevail.

According to claim 1 a kind of power lithium ion battery pack waterproof device, whose character is: the shape of the sealing strip can be used as stated in the O type, rectangular sealing strip.

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