Cold plate cavity sealing structure

Abstract

The utility model discloses a cold plate cavity sealing structure, and relates to the technical field of automobile accessories. The cold plate comprises an upper cover plate, a cold plate body, an infusion connector and a guide ring, the cold plate body is arranged below the upper cover plate, an upper sealing skirt edge is fixed to the outer side of the upper cover plate, a lower sealing skirt edge is fixed to the outer side of the cold plate body, and a first fixing opening is formed in one side of the vertical center line of one end of the upper cover plate in a penetrating mode; a through hole is correspondingly formed in the position of the same end of the cold plate main body and the fixing hole, an outer connecting groove is jointly fixed in the fixing hole I and the through hole in a penetrating manner, a liquid conveying connector is fixed on the inner wall of the outer connecting groove, and a guide ring is movably connected to the peripheral surface of the liquid conveying connector on the outer side of the cold plate main body. Through the arrangement of the upper cover plate, the cold plate main body, the infusion joint and the guide ring, the problems that the gap between the integrated cold plate and the tray of the power battery can be sealed by additional welding, the working efficiency is not high enough due to more operation steps, and the interface is not convenient to seal are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile accessories, in particular to a cold plate cavity sealing structure. Background Art

[0002] Automobile cold plate, also known as radiator plate or cooling plate, is an important part of automobile thermal management system. It is mainly used to cool key components such as battery, motor, electronic control, etc. to ensure the performance and safety of the car under various working conditions. In new energy vehicles, cold plate is particularly critical, because the battery will generate a lot of heat during the charging and discharging process, and an effective cooling system is required to maintain the battery in the optimal operating temperature range to extend battery life, maintain vehicle range and improve safety. After the cold plate is processed, it is generally welded by flat plate and flow channel plate to form a closed cavity for circulating liquid. After appropriate installation, the installation can be completed. With the continuous updating of power battery structure, range and cost control, the vehicle end has strict requirements on the structure and function of power battery structure. At present, battery capacity is developing towards high energy ratio. In order to ensure endurance, the structure is required to be as lightweight as possible. There is a solution on the market to combine cold plate and tray into an integrated structure, but it still has the following disadvantages in actual use:

[0003] In addition to the cavity for liquid circulation, the integrated cold plate also has a cavity formed by the sandwich of the flat plate and the flow channel plate. Since the cavity does not circulate with the liquid, in order to ensure the structural sealing and safety of the entire battery pack and avoid leakage, which leads to residual liquid in the cavity, its sealing function requires additional welding points, resulting in more operation steps and low work efficiency.

[0004] In order to carry out cooling cycle operation, the cold plate needs to install the joints of the cold pipe. During the installation of the cold pipe, the structure on the cold pipe is directly sealed with a threaded interface and a sealing tape is added for sealing. Not only is the sealing effect not good enough, but it also requires multiple additional operation steps, which makes the work inconvenient. Utility Model Content

[0005] The purpose of the utility model is to provide a cold plate cavity sealing structure, which solves the problem that the gap between the integrated cold plate and the tray of the power battery needs additional welding to be sealed, the large number of operation steps results in low work efficiency, and the interface sealing is not convenient.

[0006] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0007] The utility model discloses a cold plate cavity sealing structure, comprising an upper cover plate, a cold plate main body, an infusion joint and a guide ring, a cold plate main body is arranged under the upper cover plate, an upper sealing skirt is fixed on the outer side of the upper cover plate, and a lower sealing skirt is fixed on the outer side of the cold plate main body, the upper sealing skirt and the lower sealing skirt are fitted with each other. A fixing opening 1 is provided on one side of a vertical center line of one end of the upper cover plate, and a through opening is provided at a same end position of the cold plate main body and the fixing opening correspondingly, and an external connecting groove is fixedly penetrated by the fixing opening 1 and the through opening, an infusion joint is fixed on the inner wall of the external connecting groove, and a guide ring is movably connected to the outer peripheral surface of the infusion joint of the outer side of the cold plate main body. When working, the upper cover plate covers the top of the cold plate main body, and the space between the upper cover plate and the cold plate main body is closed by the cooperation of the upper sealing skirt and the lower sealing skirt, and a refrigerant is input and output through the infusion joint, so that the refrigerant circulates in the cold plate main body, and the gap between the installed joint and the infusion joint is closed by the guide ring.

[0008] Furthermore, two fixing ports 2 are provided on the side of the vertical center line of the upper cover plate at the same end as the infusion connector away from the fixing port 1, and mounting holes are evenly penetrated in the upper sealing skirt and the lower sealing skirt. The positions of the mounting holes on the upper sealing skirt and the lower sealing skirt correspond to each other, and the upper sealing skirt and the lower sealing skirt are movably connected to the mounting bolts through the mounting holes.

[0009] Furthermore, a conveying groove is opened at the top of the cold plate body near the end, and a connecting port is fixed through one end of the cold plate body near the infusion connector corresponding to the two fixed ports. The two connecting ports are respectively fixed in the two fixed ports. The refrigerant body transports the refrigerant in and out of the cold plate body through the conveying groove.

[0010] Furthermore, two interfaces are provided through the infusion connector, and infusion tubes are fixed at an edge of the interfaces close to the center of the upper cover plate. The infusion connector is connected to the refrigerant delivery pipeline through the interfaces, and the refrigerant is delivered through the infusion tubes.

[0011] Furthermore, the bottom end of the infusion tube is fixed in the upper cover plate and extends into the input and output positions of the conveying trough respectively. The infusion tube is fixed in the upper cover plate and extends into the conveying trough, so that the refrigerant can be input and output from the conveying trough.

[0012] Furthermore, the infusion connector and the connection port are both fixed with a guide ring on the surface outside the cold plate body, a sleeve ring is fixed at one end of the guide ring close to the cold plate body, and a sealing ring is fixed at one end of the sleeve ring close to the cold plate body. The infusion connector and the connection port are guided by the guide ring to install the connector structure, and the gap between the external connector and the infusion connector and the connection port is closed by the sleeve ring and the sealing ring.

[0013] The utility model has the following beneficial effects:

[0014] The utility model solves the problem that the gap between the integrated cold plate and the tray of the power battery needs additional welding to be sealed by providing an upper cover plate and a cold plate body, and the operation steps are many, resulting in low work efficiency. When installing the upper cover plate and the cold plate body, after the top of the upper cover plate is pressed to the bottom of the battery structure, the installation structure is inserted into the installation holes on the upper sealing skirt and the lower sealing skirt, and then screwed into the installation structure on the battery, and the upper cover plate is pressed onto the battery to perform heat conduction operations. At this time, the fixing port on the upper cover plate and the through port on the cold plate body jointly fix the external connection groove thereon, so that the upper cover plate and the cold plate body are connected together, and the gap between the upper cover plate and the cold plate body is well sealed. There is no need to perform additional welding and sealing at the gap between the integrated cold plate and the tray of the power battery, and the operation steps are fewer, which is convenient to use.

[0015] The utility model solves the problem of inconvenient sealing of the interface on the integrated cold plate of the power battery by arranging the upper cover plate, the cold plate body, the infusion connector and the guide ring. During operation, after the upper cover plate and the cold plate body are installed on the battery, the infusion connector and the connecting port are guided by the guide ring to the connection structure of the interface, and are movably connected to the infusion connector and the mounting structure outside the connecting port through the sleeve ring, and then cooperated with the sealing ring to close the structure outside the infusion connector and the connecting port, making the sealing of the interface on the integrated cold plate of the power battery more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 It is a three-dimensional diagram of the assembly structure of a cold plate cavity sealing structure;

[0018] Figure 2 It is a three-dimensional diagram of the upper cover structure;

[0019] Figure 3 It is a three-dimensional diagram of the main structure of the cold plate;

[0020] Figure 4 It is a side view of the cold plate main body structure stereogram;

[0021] Figure 5 It is a three-dimensional diagram of the infusion connector structure;

[0022] Figure 6 This is a three-dimensional diagram of the guide ring structure.

[0023] Reference numerals:

[0024] 1. Upper cover plate; 101. Fixing port 1; 102. Fixing port 2; 103. Upper sealing skirt; 2. Cold plate body; 201. Lower sealing skirt; 202. Mounting hole; 203. Delivery slot; 204. Through port; 3. Infusion connector; 301. Interface; 302. Infusion tube; 303. External connection slot; 4. Guide ring; 401. Sleeve ring; 402. Sealing ring; 5. Connection port. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Specific embodiment 1

[0026] See also Figure 1-6 The utility model is a cold plate cavity sealing structure, including an upper cover plate 1, a cold plate body 2, an infusion joint 3 and a guide ring 4. A cold plate body 2 is arranged below the upper cover plate 1, and the upper cover plate 1 closes the space above the cold plate body 2. When the refrigerant passes through the cold plate body 2, the cooling operation of the automobile battery is performed. An upper sealing skirt 103 is fixed to the outer side of the upper cover plate 1, and a lower sealing skirt 201 is fixed to the outer side of the cold plate body 2. The upper sealing skirt 103 and the lower sealing skirt 201 fit each other, so that the gap between the upper cover plate 1 and the cold plate body 2 is well sealed during installation. A fixing port 101 is opened on one side of the vertical center line of one end of the upper cover plate 1, and the cold plate body 2 and the fixing port A through hole 204 is correspondingly opened at the same end position of 101, and an external connecting groove 303 is fixed in the fixed hole 101 and the through hole 204. The fixed hole 101 on the upper cover plate 1 and the through hole 204 on the cold plate body 2 jointly fix the external connecting groove 303 thereon, so that the upper cover plate 1 and the cold plate body 2 are connected together, and the gap between the upper cover plate 1 and the cold plate body 2 is well sealed. An infusion connector 3 is fixed on the inner wall of the external connecting groove 303, and the refrigerant is input into the cold plate body 2 through the infusion connector 3. A guide ring 4 is movably connected to the outer peripheral surface of the infusion connector 3 outside the cold plate body 2, and the guide ring 4 cooperates to seal the infusion connector 3 and the structure connected to the infusion connector 3.

[0027] Specifically, two fixing ports 102 are provided on the side of the upper cover plate 1 at the same end as the infusion connector 3, which is away from the fixing port 1 101 on the vertical center line. Mounting holes 202 are evenly provided in the upper sealing skirt 103 and the lower sealing skirt 201. The mounting holes 202 on the upper sealing skirt 103 and the lower sealing skirt 201 correspond in position. The upper sealing skirt 103 and the lower sealing skirt 201 correspond to each other through the mounting holes 202. During installation, bolts or other structures for installation are directly inserted therein. After insertion and installation with the battery, the gap between the upper cover plate 1 and the cold plate body 2 is sealed during operation.

[0028] Furthermore, a conveying groove 203 is opened near the end of the top of the cold plate body 2, and a connecting port 5 is fixed through one end of the cold plate body 2 near the infusion connector 3 corresponding to the position of the two fixed ports 102. The two connecting ports 5 are respectively fixed in the two fixed ports 102. The cold plate body 2 conveys the refrigerant in and out of the structure inside the cold plate body 2 through the conveying groove 203. The connecting port is fixed in the fixed port 102 to carry out the installation of other refrigerant processing structures.

[0029] The operation process of this embodiment is as follows: during operation, the infusion connector 3 and the connection port 5 are fixed together in the upper cover plate 1 and the cold plate body 2, so that the upper cover plate 1 and the cold plate body 2 are connected together. When the upper cover plate 1 and the cold plate body 2 are installed, the top of the upper cover plate 1 is pressed to the bottom of the battery structure, and then the installation structure is inserted into the installation hole 202 on the upper sealing skirt 103 and the lower sealing skirt 201, and then screwed into the installation structure on the battery, and pressed onto the battery through the upper cover plate 1 to perform heat conduction operations. At this time, the fixing port 101 on the upper cover plate 1 and the through port 204 on the cold plate body 2 jointly fix the external connection groove 303 thereon, so that the upper cover plate 1 and the cold plate body 2 are connected together, and the gap between the upper cover plate 1 and the cold plate body 2 is closed, and when the upper cover plate 1 and the cold plate body 2 are pressed together, the conveying groove 203 on the cold plate body 2 is closed. Specific embodiment 2

[0030] See also Figure 1 , 4 , 5, 6, on the basis of the specific embodiment 1, two interfaces 301 are provided through the infusion connector 3, and an infusion tube 302 is fixed at an edge of the interface 301 close to the center of the upper cover plate 1. The infusion connector 3 is connected with the external refrigerant delivery pipeline through the interface 301. The refrigerant is delivered to an infusion tube 302, circulates in the cold plate body 2, and is then delivered to the external refrigerant delivery pipeline through the infusion tube 302.

[0031] Specifically, the bottom end of the infusion pipe 302 is fixed in the upper cover plate 1 and extends into the input and output positions of the delivery groove 203 respectively, so that the refrigerant transported in the infusion pipe 302 flows into the delivery groove 203, circulates in the cold plate body 2 through the delivery groove 203, and then flows back to the external pipeline through another infusion pipe 302.

[0032] Furthermore, the infusion connector 3 and the connecting port 5 are both fixed with a guide ring 4 on the surface of the outer side of the cold plate body 2, and a sleeve ring 401 is fixed to one end of the guide ring 4 close to the cold plate body 2, and a sealing ring 402 is fixed to one end of the sleeve ring 401 close to the cold plate body 2. The infusion connector 3 and the connecting port are guided by the guide ring 4 to the connection structure of the interface 301, and are movably connected to the mounting structure on the outer side of the infusion connector 3 and the connecting port 5 through the sleeve ring 401, and then cooperated with the sealing ring 402 to close the structure on the outer side of the infusion connector 3 and the connecting port 5.

[0033] The operation process of this embodiment is as follows: during operation, after the upper cover plate 1 and the cold plate body 2 are installed on the battery, the infusion connector 3 and the connecting port are guided by the guide ring 4 to the connection structure of the interface 301, and are movably connected to the mounting structure outside the infusion connector 3 and the connecting port 5 through the sleeve ring 401, and then cooperated with the sealing ring 402 to close the structure outside the infusion connector 3 and the connecting port 5.

[0034] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0035] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A cold plate cavity sealing structure, comprising an upper cover plate (1), a cold plate body (2), an infusion connector (3) and a guide ring (4), characterized in that: A cold plate body (2) is arranged below the upper cover plate (1); an upper sealing skirt (103) is fixed on the outer side of the upper cover plate (1); a lower sealing skirt (201) is fixed on the outer side of the cold plate body (2); the upper sealing skirt (103) and the lower sealing skirt (201) are fitted to each other; a fixing opening (101) is provided through one side of the vertical center line of one end of the upper cover plate (1); a through opening (204) is provided at the same end position of the cold plate body (2) and the fixing opening (101) correspondingly; an external connection groove (303) is fixed through the fixing opening (101) and the through opening (204); an infusion connector (3) is fixed on the inner wall of the external connection groove (303); and a guide ring (4) is movably connected to the outer peripheral surface of the infusion connector (3) outside the cold plate body (2).

2. The cold plate cavity sealing structure according to claim 1, characterized in that: Two second fixing openings (102) are provided on the side of the upper cover plate (1) at the same end as the infusion connector (3) and away from the first fixing opening (101) on the vertical center line thereof. Mounting holes (202) are evenly provided through the upper sealing skirt (103) and the lower sealing skirt (201). The mounting holes (202) on the upper sealing skirt (103) and the lower sealing skirt (201) correspond in position.

3. The cold plate cavity sealing structure according to claim 2, characterized in that: A conveying groove (203) is provided at the top of the cold plate body (2) near the end, and a connecting port (5) is fixedly connected and passed through one end of the cold plate body (2) near the infusion connector (3) corresponding to the positions of the two second fixed ports (102), and the two connecting ports (5) are respectively fixed in the two second fixed ports (102).

4. The cold plate cavity sealing structure according to claim 3, characterized in that: Two interfaces (301) are provided through the infusion connector (3), and infusion tubes (302) are fixed at an edge of the interfaces (301) close to the center of the upper cover plate (1).

5. The cold plate cavity sealing structure according to claim 4, characterized in that: The bottom end of the liquid infusion tube (302) is fixed through the upper cover plate (1) and extends into the input and output positions of the conveying trough (203) respectively.

6. The cold plate cavity sealing structure according to claim 5, characterized in that: The infusion connector (3) and the connection port (5) are both provided on the surface outside the cold plate body (2) and are fixed with a guide ring (4); one end of the guide ring (4) close to the cold plate body (2) is fixed with a sleeve ring (401); and one end of the sleeve ring (401) close to the cold plate body (2) is fixed with a sealing ring (402).

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