Battery box body liquid cooling plate water nozzle sealing structure

Abstract

The utility model discloses a battery box body liquid cooling plate water nozzle sealing structure which comprises a battery box body and a liquid cooling plate which are arranged in an up-down opposite mode, a water inlet and a water outlet are formed in the upper side of the liquid cooling plate, a positioning block is fixedly arranged at one end of the battery box body, and the positioning block covers the area of the water inlet and the area of the water outlet. The positioning block is provided with two groups of positioning holes which are respectively opposite to the water inlet and the water outlet, water nozzles are arranged in the positioning holes, and sealant is fixedly filled between the water nozzles and the hole walls of the positioning holes; the battery box body and the positioning block at the end part of the battery box body are welded and fixedly connected to the upper surface of the liquid cooling plate, an annular groove is formed in the bottom of the positioning block, a foaming gasket is arranged in the annular groove, and the foaming gasket is filled between the annular groove and the upper surface of the liquid cooling plate through elastic compression. The secondary sealing structure has the beneficial effect that the phenomenon of air leakage at the contact position of the water nozzle and the battery box body is avoided through a secondary sealing mode.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery technology field, concretely relates to a battery box liquid cooling plate water nozzle sealing structure. BACKGROUND

[0002] The battery pack is as the core component of new energy automobile, and its heat dissipation performance is directly related to the safety and performance of the vehicle. The liquid cooling plate is as the important component of the battery pack heat dissipation, and the selection of its fixed mode is crucial.

[0003] In the prior art, the liquid cooling plate and the battery box are usually fixedly connected by friction welding process, which can provide sufficient connection strength and sealing property, but since the top of the liquid cooling plate is provided with a water nozzle for introducing and discharging cooling liquid, the water nozzle is usually exposed outside the battery box, and the friction welding process cannot guarantee the sealing property of the contact position of the water nozzle and the battery box, which will affect the air tightness of the overall structure. UTILITY MODEL CONTENTS

[0004] Therefore, the utility model provides a battery box liquid cooling plate water nozzle sealing structure, which can seal the contact position of the liquid cooling plate water nozzle and the box, to ensure the air tightness of the whole.

[0005] To achieve the above-mentioned purpose, the utility model technical scheme is as follows:

[0006] A battery box liquid cooling plate water nozzle sealing structure, comprising a battery box and a liquid cooling plate arranged vertically, wherein the upper side of the liquid cooling plate is provided with a water inlet and a water outlet, characterized in that: a positioning block is fixedly arranged at one end of the battery box, covering the water inlet and the water outlet area, the positioning block is provided with two groups of positioning holes opposite to the water inlet and the water outlet, respectively, a water nozzle is installed in the positioning hole, and sealing glue is fixedly filled between the water nozzle and the hole wall of the positioning hole; the battery box and the positioning block at the end thereof are welded and fixed on the upper surface of the liquid cooling plate, the bottom of the positioning block is provided with an annular groove, and a foamed gasket is arranged in the annular groove.

[0007] By filling the foamed gasket in the annular groove and the sealing glue between the water nozzle and the hole wall of the positioning hole, the water nozzle and the battery box can be sealed at two levels, thereby avoiding air leakage at the contact position of the water nozzle and the battery box.

[0008] As a preferred embodiment, the upper part of the positioning block is provided with a filling channel penetrating in the horizontal direction, the filling channel penetrates through the two groups of positioning holes, and the outer diameter of the water nozzle is smaller than the inner diameter of the positioning hole. By adopting the above structure, the difficulty of sealing glue injection can be reduced.

[0009] As preferred: the water nozzle middle part has a circle of filling grooves, which are located in the filling channel.

[0010] As preferred: the water nozzle is sleeved with a connector. With the above structure, the inlet and outlet pipes of the cooling liquid can be connected conveniently.

[0011] As preferred: the connector lower end is provided with two parallel arranged annular assembly grooves, and a sealing ring is arranged in each of the annular assembly grooves. With the above structure, the air tightness of the connector assembled on the water nozzle is better.

[0012] As preferred: the connector has a horizontal direction extending fixing wing, and a mounting protrusion is fixedly arranged on the top of the positioning block, and the fixing wing is fixedly supported on the mounting protrusion. With the above structure, the connector cannot be dropped at will.

[0013] As preferred: the water nozzle inner lower end is provided with a support part, and the connector bottom is supported on the support part. With the above structure, the connector can be stably supported in the water nozzle.

[0014] As preferred: the positioning block is integrally formed with the battery box body, and the bottom of the battery box body is formed with an assembly groove, and the liquid cooling plate is fixedly arranged in the assembly groove. With the above structure, the installation between the battery box body and the liquid cooling plate is more compact, and the structure is more compact.

[0015] As preferred: the liquid cooling plate bottom is provided with a bottom plate, the bottom plate is fixedly connected with the battery box body bottom, and a sealing gasket is arranged between the bottom plate and the battery box body. With the above structure, the overall structure of the battery box body is more compact.

[0016] Compared with the prior art, the battery box body liquid cooling plate water nozzle sealing structure has the following beneficial effects:

[0017] 1. The battery box body liquid cooling plate water nozzle sealing structure has the following beneficial effects: the annular groove and the foamed gasket filled in the annular groove are arranged, when the battery box body and the liquid cooling plate are fixedly connected, the foamed gasket can block a circumferential circle of the water nozzle, and then the sealing glue filled between the water nozzle and the positioning hole wall realizes secondary blocking of the contact position of the water nozzle and the battery box body, thereby ensuring the air tightness of the overall structure.

[0018] 2. The filling channel is arranged, which greatly facilitates the injection of the sealing glue and simplifies the difficulty of glue injection. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a perspective view of the battery box body 1.

[0020] Figure 2is a partial enlarged view of the sealing structure;

[0021] Figure 3 is a structural view of the positioning block 4;

[0022] Figure 4 is a sectional view of the battery box 1 and the liquid cooling plate 2 after assembly;

[0023] Figure 5 is a structural view of a first forming mode of the annular groove 4b;

[0024] Figure 6 is a structural view of a second forming mode of the annular groove 4b;

[0025] Figure 7 is a structural view of the joint 6;

[0026] Figure 8 is a sectional view of the joint 6 after assembly;

[0027] Figure 9 is a structural view of the assembly groove 1a. DETAILED DESCRIPTION

[0028] The utility model will be further described below in combination with the embodiments and the drawings.

[0029] As shown in the drawings, Figures 1 to 6 A battery box liquid cooling plate water nozzle sealing structure, comprising a battery box 1 and a liquid cooling plate 2 arranged opposite up and down, a water inlet 2a and a water outlet 2b are formed on the upper side of the liquid cooling plate 2, a positioning block 4 is fixedly installed at one end of the battery box 1, the positioning block 4 covers the area of the water inlet 2a and the water outlet 2b, two groups of positioning holes 4a opposite the water inlet 2a and the water outlet 2b are formed on the positioning block 4, a water nozzle 3 is installed in the positioning hole 4a, and sealing glue 10 is fixedly filled between the water nozzle 3 and the hole wall of the positioning hole 4a. The battery box 1 and the positioning block 4 at the end thereof are fixed on the upper surface of the liquid cooling plate 2 by friction welding, the positioning block 4 has an annular groove 4b at the bottom, a foamed gasket 5 is installed in the annular groove 4b, and the foamed gasket 5 is elastically compressed and filled between the annular groove 4b and the upper surface of the liquid cooling plate 2.

[0030] In this way, when the battery box 1 and the liquid cooling plate 2 are friction welded into one, the foamed gasket 5 around the water inlet 2a or the water outlet 2b can play a blocking role, and the sealing glue 10 fixedly filled between the water nozzle 3 and the hole wall of the positioning hole 4a can block the positioning hole 4a, so that when the water nozzle 3 is installed on the water inlet 2a or the water outlet 2b, the whole will not have the phenomenon of air leakage.

[0031] As shown in the drawings, Figure 5As shown, in this embodiment, the center of the positioning hole 4a is at the same position as the center of the annular groove 4b, and the inner diameter of the annular groove 4b is larger than the diameter of the positioning hole 4a. In addition, the inner diameter of the annular groove 4b can also be equal to the diameter of the positioning hole 4a, which can be seen in detail from Figure 6 . In this way, the cross-sectional shape of the positioning hole 4a can be contained in the annular groove 4b, thereby ensuring that the water nozzle 3 can be blocked by the foamed gasket 5.

[0032] In this embodiment, the cross-sectional shape of the positioning hole 4a and the annular groove 4b is not limited to a circle, as long as the cross-sectional image of the positioning hole 4a can be contained in the cross-sectional image of the annular groove 4b.

[0033] As shown in Figure 2 , Figure 3 and Figure 8 , the upper part of the positioning block 4 has a filling channel 4c extending in the horizontal direction, the filling channel 4c passes through two groups of positioning holes 4a, and the outer diameter of the water nozzle 3 is smaller than the inner diameter of the positioning hole 4a. In this way, when the battery box 1 is friction welded and fixed with the liquid cooling plate 2 as a whole, by horizontally injecting sealant 10 into the filling channel 4c, the water nozzle 3 and the wall of the positioning hole 4a can be filled with sealant 10, greatly simplifying the difficulty of gluing, and making it easier to install the water nozzle.

[0034] Further, as shown in Figure 4 , a filling groove 3a is formed at the middle position of the water nozzle 3, the filling groove 3a is located inside the filling channel 4c, in this way, the sealant 10 can be in closer contact with the water nozzle 3, thereby ensuring that the positioning hole 4a can be well blocked.

[0035] In this embodiment, the water nozzle 3 is fixedly installed on the water inlet 2a and the water outlet 2b by welding, as shown in Figure 2 , a connector 6 is sleeved on the water nozzle 3, which can facilitate the connection of the inlet and outlet pipes of the cooling liquid.

[0036] Specifically, as shown in Figure 7 , the lower end of the connector 6 is formed with two parallel annular assembly grooves 6a, and a sealing ring 7 is sleeved in each annular assembly groove 6a. The sealing ring 7 can ensure that the connector 6 is more stably sleeved on the water nozzle 3, and can also ensure the sealing between the water nozzle 3 and the connector 6.

[0037] As shown in Figure 2 and Figure 7 , the connector 6 has a horizontally extending fixing wing 6b, and a mounting protrusion 4d is formed on the top of the positioning block 4, the fixing wing 6b can be supported on the mounting protrusion 4d and fixed by bolts. In this way, the connector 6 cannot be easily dropped.

[0038] Further Figure 4 And Figure 8 As shown in the water nozzle 3 inside the lower end of the support part 3b, after the joint 6 is installed on the water nozzle 3, the bottom of the joint 6 can be supported on the support part 3b, so the design can make the installation of the joint 6 more stable.

[0039] As Figure 9 As shown in the embodiment, the positioning block 4 is integrally formed with the battery box 1, and the bottom of the battery box 1 is formed with an assembly groove 1a, and the liquid cooling plate 2 is installed in the assembly groove 1a, so the design can make the overall structure more compact, and facilitate the friction welding between the battery box 1 and the liquid cooling plate 2. In addition to being integrally formed, the positioning block 4 and the battery box 1 can also be fixedly connected by welding and the like.

[0040] Further, as Figure 2 And Figure 8 As shown, after the battery box 1 and the liquid cooling plate 2 are fixedly connected as a whole, a bottom plate 8 is also installed at the bottom of the liquid cooling plate 2, so the design can protect the bottom of the liquid cooling plate 2. In the embodiment, the bottom plate 8 is riveted to the bottom of the battery box 1 by rivets, and a sealing gasket 9 is provided between the bottom plate 8 and the battery box 1 to seal.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present application, and those skilled in the art can make various similar expressions under the inspiration of the present application without violating the purpose and claims of the present application. Such changes fall within the scope of the present application.

Claims

1. A battery housing liquid cooling plate water nozzle sealing structure, comprising a battery housing (1) and a liquid cooling plate (2) arranged vertically opposite each other, wherein the liquid cooling plate (2) is provided with an inlet (2a) and an outlet (2b) on its upper side, characterized in that: A positioning block (4) is fixedly provided at one end of the battery box (1). The positioning block (4) covers the water inlet (2a) and water outlet (2b) areas. The positioning block (4) has two sets of positioning holes (4a) that are respectively opposite to the water inlet (2a) and water outlet (2b). A water nozzle (3) is installed in the positioning hole (4a). The water nozzle (3) and the hole wall of the positioning hole (4a) are fixedly filled with sealant. The battery box (1) and its end positioning block (4) are welded and fixed to the upper surface of the liquid cooling plate (2). The bottom of the positioning block (4) has an annular groove (4b). A foam gasket (5) is provided inside the annular groove (4b). The foam gasket (5) is elastically compressed and filled between the annular groove (4b) and the upper surface of the liquid cooling plate (2).

2. The battery box liquid cooling plate water nozzle sealing structure according to claim 1, characterized in that: The upper part of the positioning block (4) has a filling channel (4c) that runs horizontally through it. The filling channel (4c) passes through two sets of positioning holes (4a). The outer diameter of the water nozzle (3) is smaller than the inner diameter of the positioning hole (4a).

3. The battery box liquid cooling plate water nozzle sealing structure according to claim 2, characterized in that: The water tap (3) has a filling groove (3a) in the middle, and the filling groove (3a) is located in the filling channel (4c).

4. The battery box liquid cooling plate water nozzle sealing structure according to claim 1, characterized in that: The water tap (3) is fitted with a connector (6).

5. The battery box liquid cooling plate water nozzle sealing structure according to claim 4, characterized in that: The lower end of the connector (6) is provided with two parallel annular assembly grooves (6a), and a sealing ring (7) is installed in each of the annular assembly grooves (6a).

6. The battery box liquid cooling plate water nozzle sealing structure according to claim 4, characterized in that: The connector (6) has a horizontally extending fixed wing (6b), and the top of the positioning block (4) is fixedly provided with an installation protrusion (4d), and the fixed wing (6b) is fixedly supported on the installation protrusion (4d).

7. The battery box liquid cooling plate water nozzle sealing structure according to claim 4, characterized in that: The water nozzle (3) has a support part (3b) at its lower interior end, and the bottom of the connector (6) is supported on the support part (3b).

8. The battery box liquid cooling plate water nozzle sealing structure according to claim 1, characterized in that: The positioning block (4) is integrally formed with the battery box (1), and the bottom of the battery box (1) is formed with an assembly groove (1a), and the liquid cooling plate (2) is fixedly installed in the assembly groove (1a).

9. The battery box liquid cooling plate water nozzle sealing structure according to claim 8, characterized in that: The liquid cooling plate (2) is provided with a bottom plate (8), which is fixedly connected to the bottom of the battery box (1), and a sealing gasket (9) is provided between the bottom plate (8) and the battery box (1).

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