Double-cavity expansion kettle

Abstract

The double-cavity expansion kettle comprises a double-cavity expansion kettle body and a vehicle body dash panel, an upper shell and a lower shell which are matched with each other are arranged on the double-cavity expansion kettle body, a left filling port and a right filling port are formed in the two sides of the upper end of the upper shell, and a system exhaust connector is designed on the side face of the upper shell. A double-layer partition plate of a left cavity and a right cavity is arranged in the lower shell, the left cavity and the right cavity are designed on the two sides of the double-layer partition plate respectively, and a power battery pack compensation outlet and an electric drive system compensation outlet are designed in the bottoms of the left cavity and the right cavity respectively. According to the double-cavity expansion pot, the expansion pot is divided into two independent cavities, the two independent cavities are used for conducting compensation filling on cooling liquid for a power battery pack and an electric drive system respectively, the functions do not affect each other, the structure is simple, the double-cavity expansion pot has the advantages of being small in occupied space and convenient to fill, arrangement can be achieved in the narrow space of a forecabin, and meanwhile the requirements of left and right rudder vehicle models and the like are met. The universal rate is high, and the whole vehicle cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile expansion pots, in particular to a double-cavity expansion pot. Background Art

[0002] The expansion pot is an important component in the automobile cooling system. It is usually located in the engine compartment and is used to store coolant. It regulates the pressure of the cooling system by flowing coolant in and out of the cooling liquid compensation line to maintain a stable working pressure of the cooling system.

[0003] The liquid-cooled power battery packs and electric drive systems of existing new energy vehicle models both require expansion pots. However, the space in the cabin in front of the cab is small, and there is limited space to arrange two expansion pots. If an expansion pot is arranged for the power battery pack and the electric drive system respectively, there will be insufficient space and the convenience of installing and arranging the expansion pot will be affected, thereby increasing the cost of the vehicle model. Utility Model Content

[0004] The purpose of the utility model is to provide a double-chamber expansion pot to solve the problem raised by the above-mentioned background technology that the space in the front cabin of the cab in the current market is small and two expansion pots cannot be placed at the same time to compensate and refill the coolant of the power battery pack and the electric drive system respectively.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a double-chamber expansion pot, comprising a double-chamber expansion pot main body and a vehicle body front panel, a brake master cylinder, a cooling fan and a condenser and a wiper motor are installed on the side of the vehicle body front panel, and the double-chamber expansion pot main body is located between the brake master cylinder, the cooling fan and the condenser and the wiper motor, the double-chamber expansion pot main body is provided with an upper shell and a lower shell that cooperate with each other, and a left filling port and a right filling port are provided on both sides of the upper end of the upper shell, and a system exhaust interface is connected to the side of the upper shell, left and right cavity double-layer partitions are provided in the lower shell, and left and right cavities are provided on both sides of the double-layer partitions of the left and right cavities, so that the double-chamber expansion pot main body has two independent cavities, the left and right cavities are connected to the bottom of the left and right cavities respectively, and the left and right cavities are also provided with cavity inner partitions respectively, and door-type flow grooves are opened on the cavity inner partitions.

[0006] Preferably, the main body of the double-chamber expansion pot is fixed by a welding bracket and a front panel bolt of the vehicle body, and the outer shell wall thickness of the main body of the double-chamber expansion pot is at least 3 mm.

[0007] Preferably, the upper shell and the system exhaust interface are integrally formed by injection molding, and the system exhaust interface is connected to the left cavity and the right cavity respectively.

[0008] Preferably, the outer side of the lower shell is provided with left and right cavity dividing lines protruding outward, and the left and right cavity dividing lines correspond to the positions of the left and right cavity double-layer partitions.

[0009] Preferably, the lower shell is provided with a power battery antifreeze liquid compensation chamber shell and an electric drive system antifreeze liquid compensation chamber shell on both sides of the left and right cavity dividing line respectively.

[0010] Preferably, the lower shell and the cavity inner partition, the left and right cavity double-layer partitions, the left compensation outlet and the right compensation outlet are integrally formed by injection molding.

[0011] Preferably, the antifreeze liquid in the left cavity and the right cavity enters the power battery pack and the electric drive system through the left compensation outlet and the right compensation outlet respectively through the cooling pipeline and is pressurized by the electronic pump, and then re-enters the system circulation through the cooling pipeline through the cooling fan and the condenser.

[0012] Preferably, the left cavity is divided into four cavities in front, back, left and right by a partition inside the cavity, and the four cavities in front, back, left and right of the left cavity are connected in sequence by gate-type flow grooves.

[0013] Preferably, the right cavity is divided into two front and rear cavities by a partition inside the cavity, and the front and rear two cavities of the right cavity are also connected by a gate-type flow groove.

[0014] Preferably, two gate-type flow grooves are respectively provided on the partitions in the cavity.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] (1) The dual-chamber expansion pot divides an expansion pot into two independent chambers, which are used to compensate and refill the power battery pack and the electric drive system with coolant respectively, and the functions do not affect each other. It has the advantages of small space occupation and convenient refilling. It can be arranged in the narrow space of the front cabin and meet the needs of left-hand and right-hand drive models. It has a high commonality rate and reduces the cost of the whole vehicle.

[0017] (2) The double-chamber expansion pot integrates the antifreeze compensation functions of different systems into one double-chamber expansion pot, so that one expansion pot can be responsible for the functions of multiple systems. While reducing the number of expansion pots, the installation layout space is saved, making the installation layout of the expansion pot more convenient and reducing the cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The following are drawings of exemplary embodiments of the present invention, in which the same or similar reference numerals are used to represent the same or similar elements.

[0019] Figure 1 This is a schematic diagram of the installation position structure of the main body of the double-chamber expansion pot of the utility model;

[0020] Figure 2 This is a schematic diagram of the external structure of the double-cavity expansion pot of the utility model;

[0021] Figure 3 It is a schematic diagram of the three-dimensional structure of the lower shell of the double-cavity expansion pot of the utility model;

[0022] Figure 4 It is a top view of the lower shell of the double-chamber expansion pot of the utility model;

[0023] Figure 5 It is a schematic diagram of the upper shell structure of the double-cavity expansion pot of the utility model.

[0024] Figure numerals: 1. Double-chamber expansion pot body; 101. Upper shell; 102. Lower shell; 103. Power battery antifreeze compensation chamber shell; 104. Left and right cavity dividing line; 105. Left compensation outlet; 106. Left filling port; 107. Right filling port; 108. System exhaust interface; 109. Electric drive system antifreeze compensation chamber shell; 1010. Right compensation outlet; 1011. Left cavity; 1012. Partition inside cavity; 1013. Door-type flow groove; 1014. Right cavity; 1015. Double-layer partitions of left and right cavities; 2. Brake master cylinder; 3. Cooling fan and condenser; 4. Wiper motor; 5. Vehicle body front panel. DETAILED DESCRIPTION

[0025] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation modes in conjunction with the accompanying drawings.

[0026] In the present utility model, the term "and / or" is intended to cover all possible combinations and sub-combinations of the listed elements, including any one of the elements listed separately, any sub-combination or all elements, without excluding other elements. Unless otherwise specified, the terms "first", "second", etc. are used to describe various elements without intending to limit the positional relationship, timing relationship or importance relationship of these elements. Such terms are only used to distinguish one element from another. Unless otherwise specified, the orientation or positional relationship indicated by the terms "front, back, up, down, left, right", etc. is usually based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience and simplification of description, and cannot be understood as limiting the scope of protection of the present utility model.

[0027] See also Figure 1-5The utility model provides a technical solution: a double-chamber expansion pot, including a double-chamber expansion pot body 1 and a vehicle body front panel 5, a brake master cylinder 2, a cooling fan and condenser 3 and a wiper motor 4 are installed on the side of the vehicle body front panel 5, the brake master cylinder 2, the cooling fan and condenser 3 and the wiper motor 4 are all structures on existing vehicles, the brake master cylinder 2 generates braking force during driving braking, the cooling fan and condenser 3 are used for cooling and heat dissipation, and take away the heat in the cooling system and the air-conditioning system, the wiper motor 4 mainly drives the wiper connecting rod mechanism to wipe the front windshield, and the double-chamber expansion pot body 1 is located between the brake master cylinder 2, the cooling fan and condenser 3 and the wiper motor 4, the double-chamber expansion pot body 1 is fixed to the vehicle body front panel 5 by a welding bracket and bolts, and The shell wall thickness of the double-chamber expansion pot body 1 is at least 3 mm. Since the double-chamber expansion pot body 1 is installed between the brake master cylinder 2, the cooling fan and condenser 3, and the wiper motor 4, the arrangement space of the double-chamber expansion pot body 1 is limited. By arranging two independent cavity structures in the double-chamber expansion pot body 1, the double-chamber expansion pot body 1 can work for the power battery pack and the electric drive system at the same time, and occupies a small space, so that the double-chamber expansion pot body 1 can be smoothly arranged between the brake master cylinder 2, the cooling fan and condenser 3, and the wiper motor 4. By welding a bracket structure on the outside of the double-chamber expansion pot body 1, the double-chamber expansion pot body 1 can be bolted to the front panel 5 of the vehicle body. The front panel 5 of the vehicle body is used for the double-chamber expansion pot body 1, the brake master cylinder 2, and the cooling fan at the same time. The double-chamber expansion pot body 1 has a wall thickness of at least 3 mm to meet the internal pressure requirements. The double-chamber expansion pot body 1 is provided with an upper shell 101 and a lower shell 102 that cooperate with each other, and the upper shell 101 has a left filling port 106 and a right filling port 107 on both sides of the upper end, and the side of the upper shell 101 is connected to a system exhaust interface 108. The upper shell 101 and the system exhaust interface 108 are integrally formed by injection molding, and the system exhaust interface 108 is respectively connected to the left cavity 1011 and the right cavity 1014. This structure enables the upper shell 101 to be integrally processed and formed, so that the system exhaust interface 108 can simultaneously inject air into the left cavity 1011 and the right cavity 1014. Exhaust treatment is performed to remove the gas in the cooling pipeline. The lower shell 102 is provided with left and right cavity double-layer partitions 1015. The outer side of the lower shell 102 is provided with left and right cavity dividing lines 104 protruding outward, and the left and right cavity dividing lines 104 correspond to the positions of the left and right cavity double-layer partitions 1015. This structure allows the lower shell 102 to distinguish the left and right side shells through the external left and right cavity dividing lines 104. The lower shell 102 is provided with a power battery antifreeze compensation chamber shell 103 and an electric drive system antifreeze compensation chamber shell 109 on both sides of the left and right cavity dividing lines 104. This structure distinguishes the power battery antifreeze compensation chamber shell 103 and the electric drive system antifreeze compensation chamber shell 109 through the left and right cavity dividing lines 104 outside the lower shell 102.At the same time, the left and right cavity dividing lines 104 and the left and right cavity double-layer partitions 1015, which are in corresponding positions, make the power battery antifreeze compensation chamber shell 103 and the electric drive system antifreeze compensation chamber shell 109 correspond to the left cavity 1011 and the right cavity 1014 respectively, so that the power battery antifreeze and the electric drive system antifreeze are respectively added to the left cavity 1011 and the right cavity 1014 through the left filling port 106 and the right filling port 107, and the left cavity 1011 and the right cavity 1014 are respectively provided on both sides of the left and right cavity double-layer partitions 1015, so that the double-cavity expansion pot body 1 has two independent cavities, and the lower shell 102 and the cavity inner partition 1012, the left and right cavity double-layer partitions 1015 are respectively provided with a left cavity 1011 and a right cavity 1014. The partition plate 1015, the left compensation outlet 105 and the right compensation outlet 1010 are integrally formed by injection molding. This structure ensures the structural strength of the lower shell 102. The left compensation outlet 105 and the right compensation outlet 1010 are connected to the bottom of the left cavity 1011 and the right cavity 1014 respectively. The antifreeze in the left cavity 1011 and the right cavity 1014 respectively enters the power battery pack and the electric drive system through the left compensation outlet 105 and the right compensation outlet 1010 through the cooling pipeline and the electronic pump after being pressurized, and re-enters the system circulation through the cooling pipeline through the cooling fan and the condenser 3. This structure enables the double-chamber expansion pot body 1 to be connected to the power battery pack and the electric drive system respectively. After heat exchange cooling of the power battery pack and the electric drive system, the heat is discharged through the cooperation of the existing cooling fan and the condenser 3 to achieve cooling treatment, and the left cavity 1011 and the right cavity 1014 are respectively provided with a cavity partition 1012, and the cavity partition 1012 is provided with a door-shaped flow groove 1013. The left cavity 1011 is divided into four cavities in front, back, left and right by the cavity partition 1012, and the front, back, left and right cavities of the left cavity 1011 are connected in sequence by the door-shaped flow groove 1013. This structure allows the left cavity 1011 to flow in the four cavities through the setting of the door-shaped flow groove 1013, and reduces the vehicle in motion. The flow kinetic energy of the antifreeze during the process is reduced, and the impact on the kettle wall is reduced. The right cavity 1014 is divided into two front and rear cavities by the inner partition 1012 of the cavity, and the front and rear cavities of the right cavity 1014 are also connected by the gate-shaped flow groove 1013. This structure allows the right cavity 1014 to flow in the two cavities through the setting of the gate-shaped flow groove 1013, reducing the flow kinetic energy of the antifreeze during the movement of the vehicle and reducing the impact on the kettle wall. Two gate-shaped flow grooves 1013 are respectively provided on the inner partition 1012 of the cavity. This structure allows the antifreeze in the left cavity 1011 and the right cavity 1014 to be connected and flowed through the gate-shaped flow groove 1013.

[0028] Working principle: When using the double-chamber expansion pot, first, the double-chamber expansion pot body 1 is arranged between the brake master cylinder 2, the cooling fan and condenser 3 and the wiper motor 4, and is fixed to the front panel 5 of the vehicle body by bolts through a welding bracket on the outside of the double-chamber expansion pot body 1. The upper shell 101 and the lower shell 102 are sealed and fastened by an existing fixing method. The left compensation outlet 105 and the right compensation outlet 1010 at the bottom of the double-chamber expansion pot body 1 are respectively connected to the cooling mechanism of the power battery pack and the electric drive system through the cooling pipeline after being pressurized by the electronic pump, so that the antifreeze enters the power battery pack and the electric drive system through the cooling pipeline after being pressurized by the electronic pump, and takes away the heat generated by it. After heat exchange in the heat exchanger, the heat is discharged through the cooling fan and the condenser 3. The lower shell 102 is divided into a power battery antifreeze compensation chamber shell 103 and an electric drive system antifreeze compensation chamber shell 1 by the left and right cavity dividing lines 104. 09, so that the left filling port 106 and the right filling port 107 are easy to distinguish. When using the double-chamber expansion pot body 1, the power battery antifreeze and the electric drive system antifreeze are injected into the left cavity 1011 and the right cavity 1014 through the left filling port 106 and the right filling port 107 respectively. The left and right cavity double-layer partitions 1015 make the left cavity 1011 and the right cavity 1014 exist independently, allowing the antifreeze in the left cavity 1011 to flow in the four front, rear, left and right cavities separated by the partition 1012 in the cavity, and the antifreeze in the right cavity 1014 to flow in the two front and rear cavities separated by the partition 1012 in the cavity. When the vehicle is running, the antifreeze reduces the flow kinetic energy through the partition 1012 in the cavity, reduces the impact on the pot wall, and is interconnected through the door-type flow groove 1013, and the system exhaust interface 108 discharges the gas generated in the cooling pipeline, thereby completing a series of tasks.

[0029] It should be noted that the utility model (e.g., utility model concepts, etc.) has been described in the specification of this patent document and / or illustrated in the drawings according to the exemplary embodiments; the embodiments of the utility model are presented only by way of example and are not intended to limit the scope of the utility model. The structure and / or arrangement of the elements of the utility model concepts embodied in the utility model as described in the specification and / or illustrated in the drawings are only illustrative. Although the exemplary embodiments of the utility model have been described in detail in this patent document, it is easy for a person of ordinary skill in the art to understand that equivalents, modifications, changes, etc. of the subject matter of the exemplary embodiments and alternative embodiments are possible and are considered to be within the scope of the utility model; all of these subject matters (e.g., modifications, changes, embodiments, combinations, equivalents, etc.) are intended to be included within the scope of the utility model. It should also be noted that various / other modifications, changes, substitutions, equivalents, changes, omissions, etc. can be made in the configuration and / or arrangement of the exemplary embodiments (e.g., in terms of concepts, designs, structures, devices, forms, assemblies, constructions, means, functions, systems, processes / methods, steps, the order of process / method steps, operations, operating conditions, performance, materials, compositions, combinations, etc.). ) without departing from the scope of the present invention; all of these subjects (such as modifications, changes, embodiments, combinations, equivalents, etc.) are intended to be included within the scope of the present invention. The scope of the present invention is not intended to be limited to the subject matter described in the specification and / or drawings of this patent document (such as details, structures, functions, materials, behaviors, steps, sequences, systems, results, etc.). Considering that the claims of this patent document will be appropriately interpreted as covering the full scope of the subject matter of the present invention (for example, including any and all such modifications, changes, embodiments, combinations, equivalents, etc.); it should be understood that the terms used in this patent document are intended to provide a description of the subject matter of the exemplary embodiments, rather than as a limitation on the scope of the present invention.

[0030] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A double-chamber expansion pot, comprising a double-chamber expansion pot body (1) and a vehicle body front panel (5), wherein a brake master cylinder (2), a cooling fan and condenser (3) and a wiper motor (4) are installed on the side of the vehicle body front panel (5), and the double-chamber expansion pot body (1) is located between the brake master cylinder (2), the cooling fan and condenser (3) and the wiper motor (4), and is characterized in that: The double-chamber expansion pot body (1) is provided with an upper shell (101) and a lower shell (102) that cooperate with each other, and the upper shell (101) is provided with a left filling port (106) and a right filling port (107) on both sides of the upper end, and the side of the upper shell (101) is connected to a system exhaust interface (108), and the lower shell (102) is provided with a left cavity double-layer partition (1015), and the left cavity (106) and the right cavity (107) are provided on both sides of the left and right cavity double-layer partition (1015). 11) and the right cavity (1014), so that the double-cavity expansion pot body (1) has two independent cavities, the bottoms of the left cavity (1011) and the right cavity (1014) are respectively connected to the left compensation outlet (105) and the right compensation outlet (1010), and the left cavity (1011) and the right cavity (1014) are also respectively provided with a cavity partition (1012), and the cavity partition (1012) is provided with a door-shaped flow groove (1013).

2. The double-chamber expansion pot according to claim 1, characterized in that: The double-chamber expansion pot body (1) is fixed to the front panel (5) of the vehicle body by means of a welding bracket and bolts, and the outer shell wall thickness of the double-chamber expansion pot body (1) is at least 3 mm.

3. The double-chamber expansion pot according to claim 1, characterized in that: The upper shell (101) and the system exhaust interface (108) are integrally formed by injection molding, and the system exhaust interface (108) is respectively connected to the left cavity (1011) and the right cavity (1014).

4. The double-chamber expansion pot according to claim 1, characterized in that: The outer side of the lower shell (102) is provided with left and right cavity dividing lines (104) protruding outward, and the left and right cavity dividing lines (104) correspond to the positions of the left and right cavity double-layer partitions (1015).

5. The double-chamber expansion pot according to claim 4, characterized in that: The lower shell (102) is provided with a power battery antifreeze liquid compensation chamber shell (103) and an electric drive system antifreeze liquid compensation chamber shell (109) on both sides of the left and right cavity dividing lines (104), respectively.

6. The double-chamber expansion pot according to claim 1, characterized in that: The lower shell (102), the cavity inner partition (1012), the left and right cavity double-layer partitions (1015), the left compensation outlet (105) and the right compensation outlet (1010) are integrally formed by injection molding.

7. The double-chamber expansion pot according to claim 1, characterized in that: The antifreeze liquid in the left cavity (1011) and the right cavity (1014) respectively enters the power battery pack and the electric drive system through the left compensation outlet (105) and the right compensation outlet (1010) through the cooling pipeline after being pressurized by the electronic pump, and then re-enters the system circulation through the cooling pipeline through the cooling fan and the condenser (3).

8. The double-chamber expansion pot according to claim 1, characterized in that: The left cavity (1011) is divided into four cavities in front, back, left and right by a partition (1012) in the cavity, and the four cavities in front, back, left and right of the left cavity (1011) are connected in sequence by gate-shaped flow grooves (1013).

9. The double-chamber expansion pot according to claim 1, characterized in that: The right side cavity (1014) is divided into two front and rear cavities by a partition (1012) inside the cavity, and the front and rear cavities of the right side cavity (1014) are also connected by a gate-shaped flow groove (1013) respectively.

10. The double-chamber expansion pot according to claim 1, characterized in that: Two gate-shaped flow grooves (1013) are respectively provided on the partition plate (1012) in the cavity.

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