CN207441762U - Box assembly and battery case - Google Patents

Abstract

The utility model provides a box assembly and a battery box. The box body assembly includes a box body and a one-way water permeable valve. The bottom wall of the box is provided with a through installation hole, and the one-way water-permeable valve is fixed in the installation hole, and the one-way water-permeable valve is set to only allow the liquid in the box to flow out. The box assembly described in the battery box and the batteries accommodated in the box. When the external liquid seeps into the box, the liquid will slide down under the action of gravity and collect on the bottom wall; and because the bottom wall is equipped with a one-way water-permeable valve, the liquid can be discharged into the box in time through the one-way water-permeable valve In addition, the battery contained in the box is prevented from being damaged due to being soaked in liquid, so as to avoid safety accidents and improve the safety performance of the battery box. At the same time, since the one-way water-permeable valve only allows liquid to flow in one direction, it can also prevent external liquid from entering the box through the one-way water-permeable valve.

Description

Case Assembly and Battery Box

technical field

The utility model relates to the battery field, in particular to a box assembly and a battery box.

Background technique

New energy vehicles have the characteristics of energy saving and environmental protection. Facing the current situation of increasing energy shortage, people pay more and more attention to new energy vehicles. Batteries are the core components of new energy vehicles, and their safety can directly restrict the promotion and use of new energy vehicles. Among the battery safety issues, the waterproof problem of the battery box has been difficult to solve properly. Whether it is external water seepage, condensed water generated by temperature changes inside the battery box, or water leakage from the water cooling system, it directly threatens the safety of the battery.

Most of the existing methods are to prevent water accumulation by adding water-absorbing materials such as moisture-proof agents in the battery box, but these methods are not effective when encountering a large amount of water ingress.

Utility model content

In view of the problems existing in the background technology, the purpose of the utility model is to provide a box assembly and a battery box, which can discharge the liquid infiltrated into the box, and improve the safety performance of the battery box.

In order to achieve the above object, in a first aspect, the utility model provides a box assembly, which includes a box and a one-way water-permeable valve. The bottom wall of the box is provided with a through installation hole, and the one-way water-permeable valve is fixed in the installation hole, and the one-way water-permeable valve is set to only allow the liquid in the box to flow out.

In order to achieve the above object, in a second aspect, the utility model provides a battery box, which includes the box assembly described in the first aspect of the utility model and a battery accommodated in the box.

The beneficial effects of the utility model are as follows:

In the box assembly and the battery box according to the utility model, when the external liquid seeps into the box, the liquid will slide down under the action of gravity and collect on the bottom wall; Valve, so the liquid can be discharged out of the box in time through the one-way water-permeable valve, thereby preventing the batteries contained in the box from being damaged by being soaked in liquid, avoiding safety accidents, and improving the safety performance of the battery box. At the same time, since the one-way water-permeable valve only allows liquid to flow in one direction, it can also prevent external liquid from entering the box through the one-way water-permeable valve.

Description of drawings

Fig. 1 is a schematic diagram of a battery box according to the present invention.

FIG. 2 is a schematic diagram of the box of the box assembly according to the present invention.

Fig. 3 is another schematic diagram of the box of the box assembly according to the present invention.

Fig. 4 is a schematic diagram of the one-way water permeable valve of the tank assembly according to the present invention.

Fig. 5 is another schematic diagram of the one-way water permeable valve of the tank assembly according to the present invention.

Wherein, the reference signs are explained as follows:

1 Box assembly 2 Battery

11 Cabinet H mounting hole

111 bottom wall C groove

12 one-way permeable valve C1 transverse groove

121 valve body C2 longitudinal groove

122 spring O opening

123 spool P1 upper flow channel

13 Waterproof gasket P2 down runner

14 case covers

Detailed ways

The box assembly and the battery box of the present utility model will be described in detail below with reference to the accompanying drawings.

Firstly, the box assembly according to the first aspect of the present utility model will be described.

Referring to FIG. 1 to FIG. 5 , the box assembly 1 according to the present invention includes a box body 11 and a one-way water permeable valve 12 . The bottom wall 111 of the box body 11 is provided with a through installation hole H, and the one-way water-permeable valve 12 is fixed in the installation hole H, and the one-way water-permeable valve 12 is set only for the liquid in the box body 11 to flow out.

When external liquid (such as water) penetrated into the casing 11 (or the condensed water produced by the temperature difference in the casing 11), the liquid would slide down under the action of gravity and collect on the bottom wall 111; 111 is provided with a one-way water-permeable valve 12, so the liquid can be discharged out of the box body 11 in time through the one-way water-permeable valve 12, thereby preventing the components contained in the box body 11 from being damaged by liquid immersion, and avoiding safety accidents. Simultaneously, since the one-way permeable valve 12 is only for one-way flow of liquid (that is, flows from the inside of the tank 11 to the outside of the tank 11 ), it can also prevent external liquid from entering the tank 11 through the one-way permeable valve 12 .

The one-way water-permeable valve 12 can adopt different types, as long as it can have the function of one-way water-permeable. Preferably, referring to Fig. 4 and Fig. 5, the one-way permeable valve 12 includes: a valve body 121, which is fixed to the installation hole H and has a connected upper flow channel P1 and a lower flow channel P2 inside. The passage P2 communicates with the outside of the box body 11; the spring 122 is arranged in the lower flow passage P2; and the valve core 123 is arranged in the lower flow passage P2 so as to slide up and down. The spring 122 elastically supports the spool 123 from below, so that the spool 123 closes the opening O connecting the lower flow channel P2 and the upper flow channel P1; The opening O through which P2 communicates with the upper channel P1 is opened. Wherein, the valve body 121 can be fixed to the installation hole H in different ways, for example, the valve body 121 can be screwed into the installation hole H. As shown in FIG.

Specifically, referring to FIG. 4 , under normal circumstances, there is no accumulation of liquid in the upper channel P1, and the spring 122 applies an upward elastic force to the valve core 123, so that the valve core 123 closes the opening O connecting the lower channel P2 and the upper channel P1; The external liquid cannot open the opening O after entering the downflow channel P2, and thus cannot enter the box body 11. When the external liquid seeps into the box body 11 and accumulates in the bottom wall 111, referring to Fig. 5, the liquid will flow into the upper channel P1; and as the liquid accumulates more and more, the gravity of the liquid borne by the valve core 123 will also increase. When the downward gravity of the liquid is greater than the upward elastic force of the spring 122, the spool 123 moves downward and compresses the spring 122 to open the opening O, thereby discharging the liquid in the tank 11. After the liquid in the tank 11 is discharged, the spring 122 lifts the valve core 123 upward again, thereby closing the opening O again.

Referring to FIG. 1 and FIG. 2 , the bottom wall 111 of the box body 11 has a groove C, and the installation hole H is disposed at the bottom of the groove C. Referring to FIG. Since the groove C is lower than the surface of the bottom wall 111, the liquid preferentially collects into the groove C, and since the installation hole H is arranged at the bottom of the groove C, the groove C can guide the liquid to the one-way direction at the installation hole H. The water permeable valve 12 gathers, and then the liquid is discharged out of the tank 11 . The cross section of the groove C can be rectangular, semicircular, V-shaped or U-shaped.

Referring to FIG. 2 , in order to improve the liquid collection efficiency, a plurality of grooves C may be provided on the bottom wall 111 of the box body 11 . Preferably, the plurality of grooves C include transverse grooves C1 and longitudinal grooves C2 arranged crosswise. Further, there are two transverse grooves C1, two longitudinal grooves C2, and four intersection positions are formed.

Further, mounting holes H are provided at all intersection positions of the transverse groove C1 and the longitudinal groove C2. That is to say, one-way water permeable valves 12 are all provided at all intersection positions. Such an arrangement can collect and discharge fluid more efficiently and quickly.

4 and 5, in order to improve the tightness of the box 11 and prevent liquid from flowing into the box 11 through the gap between the bottom wall 111 and the one-way water permeable valve 12, a waterproof gasket 13 can be provided in the mounting hole H. The waterproof gasket 13 is clamped between the bottom wall 111 and the one-way water permeable valve 12 , thereby improving the sealing performance of the box body 11 . The waterproof gasket 13 is made of elastic soft material, preferably silica gel.

Wherein, the installation hole H may be a stepped hole, and the waterproof gasket 13 is arranged on the step of the stepped hole.

Referring to FIG. 1 , the box assembly 1 may further include a box cover 14 , which is sealed and fixed on the top of the box 11 , and forms a closed inner cavity with the box 11 . The inner cavity can be used to accommodate corresponding components.

Next, the battery box according to the second aspect of the utility model is described.

Referring to FIG. 1 to FIG. 5 , the battery case according to the present invention includes the case body assembly 1 described in the first aspect of the present invention and the battery 2 accommodated in the case body 11 .

When external liquid (such as water) seeps into the casing 11, the liquid will slide down under the action of gravity and collect on the bottom wall 111; It is discharged out of the box body 11 through the one-way water-permeable valve 12 in time, thereby preventing the battery 2 contained in the box body 11 from being damaged by being soaked in liquid, avoiding safety accidents, and improving the safety performance of the battery box. At the same time, since the one-way water-permeable valve 12 only allows liquid to flow in one direction, it can also prevent external liquid from entering the box body 11 through the one-way water-permeable valve 12 .

The battery box can also include components such as wire harnesses and cooling plates housed in the box body 11, and can be used as a power mechanism of an electric vehicle.

Claims (10)

1. a kind of box assembly (1), which is characterized in that including babinet (11) and Unidirectional water permeable valve (12)；

The bottom wall (111) of babinet (11) is equipped with the mounting hole (H) of perforation, and Unidirectional water permeable valve (12) is fixed in mounting hole (H), and Unidirectional water permeable valve (12) is arranged to only flow outwardly for the liquid in babinet (11).

2. box assembly (1) according to claim 1, which is characterized in that Unidirectional water permeable valve (12) includes：

Valve body (121) is fixed on mounting hole (H) and internal upper runner (P1) and lower flow channel (P2) with connection, upper runner (P1) connected with babinet (11) inside, lower flow channel (P2) is connected with babinet (11) outside；

Spring (122) is arranged in lower flow channel (P2)；And

Spool (123) slides up and down to and is arranged in lower flow channel (P2)；

Spring (122) flexibly supports spool (123) from below, so that spool (123) is by lower flow channel (P2) and upper runner (P1) Opening (O) closing of connection；When the gravity of spool (123) upper liquid is more than the elastic force of spring (122), spool (123) will The opening (O) that lower flow channel (P2) is connected with upper runner (P1) is opened.

3. box assembly (1) according to claim 2, which is characterized in that valve body (121) is threadedly connected to mounting hole (H).

4. box assembly (1) according to claim 1, which is characterized in that the bottom wall (111) of babinet (11) has groove (C), and mounting hole (H) is arranged on the bottom of groove (C).

5. box assembly (1) according to claim 4, which is characterized in that groove (C) is multiple, and the multiple groove (C) transverse concave groove (C1) of arranged crosswise and longitudinal fluting (C2) are included.

6. box assembly (1) according to claim 5, which is characterized in that transverse concave groove (C1) and longitudinal fluting (C2) Mounting hole (H) is equipped on all crossover locations.

7. box assembly (1) according to claim 1, which is characterized in that box assembly (1) further includes waterproof washer (13), it is arranged in mounting hole (H) and is clamped between bottom wall (111) and Unidirectional water permeable valve (12).

8. box assembly (1) according to claim 7, which is characterized in that mounting hole (H) is stepped hole, and waterproof washer (13) it is arranged on the step of stepped hole.

9. box assembly (1) according to claim 1, which is characterized in that the box assembly (1) further includes case lid (14), the top of babinet (11) is sealingly fastened in, and the inner cavity of closing is surrounded with babinet (11).

10. a kind of battery case, which is characterized in that including the box assembly (1) according to any one of claim 1-9 and The battery (2) being housed in babinet (11).