Welding tool, heater module and integrated module electric compressor

Abstract

The utility model discloses a welding tool, a heater module and an integrated module electric compressor, and belongs to the technical field of heater welding machining, the welding tool comprises a tool body, a containing cavity is formed in the tool body, a heater is placed in the containing cavity, the heater comprises a base plate and a heating plate, and the heating plate is arranged on the base plate. The heating plate is connected with a plurality of heat conducting fins; the tool body comprises an upper positioning assembly and a lower positioning assembly, the upper positioning assembly and the lower positioning assembly are mutually fixed through bolts, the lower surface of the upper positioning assembly, the upper surface of the lower positioning assembly and cavities in the opposite surfaces of the upper positioning assembly and the lower positioning assembly are combined to form a containing cavity, and a plurality of welding exhaust holes are formed in the containing cavity. A stress release groove is connected into the containing cavity. The substrate surface temperature can be reasonably and effectively utilized, waste of waste heat in the substrate welding process is reduced, the heat efficiency in the substrate welding process is improved, and the welding quality of the substrate and a heating plate is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of heater welding technology, and more specifically, to welding fixtures, heater modules, and integrated module electric compressors. Background Technology

[0002] In low-temperature environments, the vehicle's warm-up rate and battery operating temperature are crucial to the driving experience. In low-temperature environments, the heating module in the heater assembly can quickly raise the temperature of the fluid medium, and then raise the temperature of the battery and the interior of the vehicle through the liquid medium. To achieve the above objectives, a heating module can be installed at the bottom of the control unit near the compressor intake, which can heat the fluid medium more quickly and also heat the refrigerant entering the compressor, thereby improving the compressor's heating speed.

[0003] Thick-film heating technology involves printing an insulating medium, heating resistor, conductor, and insulating protective layer sequentially onto a substrate, such as stainless steel, ceramic, glass, or aluminum alloy, using a thick-film screen printing process. The resulting heating device is then sintered at high temperatures. Currently, thick-film thermal printing technology is maturing, offering advantages such as excellent thermal conductivity, large heat dissipation area, and high safety, making it suitable for the aforementioned applications.

[0004] Existing stainless steel thick-film heaters, limited by screen printing technology, lack additional heat dissipation structures on the substrate surface. Consequently, the substrate surface temperature remains high, hindering efficient heat utilization and resulting in wasted heat and low thermal efficiency. To add heat dissipation structures to the substrate, dissimilar metal welding is required. However, commonly used welding fixtures can only position the components being welded, offering little control over the heat gradient distribution, leading to poor thermal conductivity and low heating efficiency in the welded heater.

[0005] Therefore, in view of this, we will study and improve the existing structure to provide welding fixtures, heater modules and integrated module electric compressors, in order to achieve a more practical purpose. Utility Model Content

[0006] 1. Technical problems to be solved

[0007] To address the problems existing in the prior art, the purpose of this utility model is to provide a welding fixture, a heater module, and an integrated module electric compressor. It can realize the rational and effective utilization of the substrate surface temperature, reduce the waste of residual heat in the substrate welding process, improve the thermal efficiency in the substrate welding process, effectively improve the welding quality between the substrate and the heating plate, and improve the reliability of the fixture.

[0008] 2. Technical Solution

[0009] To solve the above problems, the present invention adopts the following technical solution.

[0010] The welding fixture, heater module and integrated module electric compressor include a fixture body, the fixture body has an internal cavity, the cavity contains a heater, the heater includes a base plate and a heating plate, and the heating plate is connected to a number of heat-conducting fins.

[0011] The tooling body includes an upper positioning component and a lower positioning component. The upper positioning component and the lower positioning component are fixed to each other by bolts. The cavity formed by the lower surface of the upper positioning component, the upper surface of the lower positioning component, and the cavity formed by the opposing surfaces of the two components is provided on the cavity. The cavity is provided with a number of welding vent holes. The cavity is connected to a stress relief groove.

[0012] The lower surface of the upper positioning component is provided with upper heat dissipation holes that correspond one-to-one with the heat-conducting fins. A gap is formed between the inner wall of the upper heat dissipation hole and the heat-conducting fins, and the gap is connected to the receiving cavity.

[0013] The upper surface of the lower positioning component has lower heat dissipation holes that correspond one-to-one with the heat-conducting fins, and the lower heat dissipation holes penetrate the lower positioning component.

[0014] Furthermore, the tooling is a cuboid structure formed of graphite material;

[0015] The substrate is made of ferritic stainless steel, and the heating plate is made of aluminum alloy.

[0016] Furthermore, several of the welding vent holes are distributed along the length of the receiving cavity, and the extension distance covers all the heat-conducting fins;

[0017] The welding vent is located on the lower surface of the upper positioning component or the upper surface of the lower positioning component.

[0018] Furthermore, the number of stress relief grooves is no less than two sets, and the two sets of stress relief grooves are centrally symmetrical.

[0019] Furthermore, one end of the stress relief groove is connected to the receiving cavity, and the other end of the stress relief groove is connected to the welding vent hole.

[0020] Furthermore, the upper positioning component is a cuboid structure with an opening on the upper side, and the lower positioning component is a cuboid structure with an opening on the lower side.

[0021] Furthermore, a set of first heat dissipation holes are provided on both the front and rear sides of the upper positioning component;

[0022] The upper positioning component has a set of second heat dissipation holes on both its left and right sides.

[0023] Furthermore, a set of third heat dissipation holes are provided on both the front and rear sides of the lower positioning component;

[0024] The lower positioning component has a set of fourth heat dissipation holes on both its left and right sides.

[0025] A heater module is manufactured using welding fixtures.

[0026] An integrated modular electric compressor includes a heater module.

[0027] 3. Beneficial effects

[0028] Compared with existing technologies, the advantages of this utility model are:

[0029] ① This solution guides the high-temperature gas in the brazing furnace during the welding process by setting up several heat-equalizing holes, making the temperature distribution in the tooling more uniform. At the same time, the welding exhaust holes are used to discharge the gas between the substrate and the heating plate during the extrusion and welding process, reducing the probability of welding porosity on the welding surface between the substrate and the heating plate, improving the welding quality between the substrate and the heating plate, realizing the rational and effective use of the substrate surface temperature, reducing the waste of residual heat during the substrate welding process, improving the thermal efficiency of the substrate welding process, and effectively improving the welding quality between the substrate and the heating plate.

[0030] ② In this design, the receiving cavity is connected to a stress relief groove for reducing stress, which can disperse the stress of the tooling, alleviate stress concentration, reduce the probability of the tooling deforming or even cracking due to stress concentration and bolt thermal expansion, and improve the reliability of the tooling. Attached Figure Description

[0031] Figure 1 This is a three-dimensional structural diagram of the tooling body in this utility model;

[0032] Figure 2 This is a schematic diagram of the tooling body after disassembly in this utility model;

[0033] Figure 3 In this utility model Figure 2 Enlarged structural diagram of part A in the middle;

[0034] Figure 4 This is a schematic diagram of the lower positioning component of this utility model.

[0035] Explanation of the labels in the diagram:

[0036] 1. Tooling body;

[0037] 101. Receiving cavity; 102. Weld vent; 103. Stress relief groove;

[0038] 2. Heater;

[0039] 201. Substrate; 202. Heating plate; 203. Heat-conducting fins;

[0040] 3. Upper positioning component; 301. Upper heat dissipation hole; 302. First heat dissipation hole; 303. Second heat dissipation hole;

[0041] 4. Lower positioning component; 401. Lower heat dissipation hole; 402. Third heat dissipation hole; 403. Fourth heat dissipation hole. Detailed Implementation

[0042] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0043] Example:

[0044] Please see Figure 1 - Figure 4 The welding fixture, heater module and integrated module electric compressor include a fixture body 1, the fixture body 1 has a receiving cavity 101 inside, the receiving cavity 101 is placed inside the heater 2, the heater 2 includes a base plate 201 and a heating plate 202, and a number of heat-conducting fins 203 are connected to the heating plate 202.

[0045] The tooling body 1 includes an upper positioning component 3 and a lower positioning component 4. The upper positioning component 3 and the lower positioning component 4 are fixed to each other by bolts. The lower surface of the upper positioning component 3, the upper surface of the lower positioning component 4, and the cavity of their opposing surfaces are combined to form a receiving cavity 101. A plurality of welding vent holes 102 are provided on the receiving cavity 101. A stress relief groove 103 is connected inside the receiving cavity 101.

[0046] The welding vent 102 can discharge the gas between the substrate 201 and the heating plate 202 during the extrusion and welding process, reduce the probability of welding pores on the welding surface between the substrate 201 and the heating plate 202, and improve the welding quality between the substrate 201 and the heating plate 202.

[0047] The lower surface of the upper positioning component 3 is provided with upper heat dissipation holes 301 corresponding to the heat-conducting fins 203. A gap is formed between the inner wall of the upper heat dissipation hole 301 and the heat-conducting fins 203, and the gap is connected to the receiving cavity 101.

[0048] The receiving cavity 101 is connected to a stress relief groove 103 for reducing stress, which can disperse the stress of the tooling, alleviate stress concentration, reduce the probability of the tooling deforming or even cracking due to stress concentration and bolt thermal expansion, and improve the reliability of the tooling.

[0049] It can guide the high-temperature gas in the brazing furnace during the welding process, making the temperature distribution in the tooling more uniform.

[0050] The upper surface of the lower positioning component 4 is provided with a lower heat dissipation hole 401 corresponding to the heat conduction fins 203, and the lower heat dissipation hole 401 penetrates the lower positioning component 4.

[0051] See Figure 1 and Figure 2 Specifically, the tooling is a cuboid structure made of graphite; graphite is resistant to high temperatures and has a small amount of deformation at high temperatures, which can effectively suppress the deterioration of welding quality caused by tooling deformation.

[0052] The substrate 201 is made of ferritic stainless steel, and the heating plate 202 is made of aluminum alloy.

[0053] See Figure 1 , Figure 2 and Figure 4 Specifically, several welding vent holes 102 are distributed along the length of the receiving cavity 101, and the extension distance covers all heat-conducting fins 203;

[0054] The welding vent 102 is provided on the lower surface of the upper positioning component 3 or the upper surface of the lower positioning component 4.

[0055] During welding, the gas between the substrate 201 and the heating plate 202 during the extrusion and welding process can be discharged through the welding vent 102.

[0056] See Figure 4 Specifically, the number of stress relief grooves 103 is no less than two sets, and the two sets of stress relief grooves 103 are centrally symmetrical.

[0057] During the welding process, the bolts expand due to heat, causing internal stress to be generated in the upper positioning component 3 and the lower positioning component 4, which can damage them. At this time, the stress can be released through the stress relief groove 103.

[0058] See Figure 2 and Figure 4 Specifically, one end of the stress relief groove 103 is connected to the receiving cavity 101, and the other end of the stress relief groove 103 is connected to the welding vent hole 102.

[0059] In this way, stress relief can be ensured while the exhaust of hot air can be guaranteed.

[0060] See Figure 1 , Figure 2 and Figure 4 Specifically, the upper positioning component 3 is a cuboid structure with an opening on the upper side, and the lower positioning component 4 is a cuboid structure with an opening on the lower side.

[0061] The upper positioning component 3 and the lower positioning component 4 have similar structures and are nearly symmetrically distributed, which improves the convenience of aligning and assembling them during use.

[0062] Specifically, a set of first heat dissipation holes 302 are provided on both the front and rear sides of the upper positioning component 3;

[0063] A set of second heat dissipation holes 303 are provided on both the left and right sides of the upper positioning component 3.

[0064] Specifically, a set of third heat dissipation holes 402 are provided on both the front and rear sides of the lower positioning component 4;

[0065] A set of fourth heat dissipation holes 403 are provided on both the left and right sides of the lower positioning component 4.

[0066] This ensures a uniform distribution of heat.

[0067] A heater module is manufactured using welding fixtures.

[0068] An integrated modular electric compressor includes a heater module.

[0069] Working principle:

[0070] This tooling, through the upper heat-equalizing holes 301, 302, and 303 on the upper positioning component 3, and the lower heat-equalizing holes 401, 402, and 403 on the lower positioning component 4, guides the high-temperature gas in the brazing furnace during the welding process, making the temperature distribution in the tooling body 1 more uniform.

[0071] By utilizing the welding vent 102 to expel the gas between the substrate 201 and the heating plate 202 during the extrusion and welding process, the probability of welding pores being generated on the welding surface between the substrate 201 and the heating plate 202 is reduced, thereby improving the welding quality between the substrate 201 and the heating plate 202. This achieves reasonable and effective utilization of the surface temperature of the substrate 201, reduces the waste of residual heat during the welding process of the substrate 201, improves the thermal efficiency during the welding process of the substrate 201, and effectively improves the welding quality between the substrate 201 and the heating plate 202.

[0072] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A welding fixture, comprising a fixture body (1), wherein the fixture body (1) has an internal cavity (101), and a heater (2) is placed inside the cavity (101), characterized in that: The heater (2) includes a base plate (201) and a heating plate (202), and a plurality of heat-conducting fins (203) are connected to the heating plate (202); The tooling body (1) includes an upper positioning component (3) and a lower positioning component (4). The upper positioning component (3) and the lower positioning component (4) are fixed to each other by bolts. The lower surface of the upper positioning component (3), the upper surface of the lower positioning component (4), and the cavity of their opposing surfaces are combined to form a receiving cavity (101). The receiving cavity (101) is provided with a plurality of welding vent holes (102). The receiving cavity (101) is connected to a stress relief groove (103). The lower surface of the upper positioning component (3) is provided with upper heat dissipation holes (301) that correspond one-to-one with the heat-conducting fins (203). The inner wall of the upper heat dissipation hole (301) forms a gap with the heat-conducting fins (203), and the gap is connected to the receiving cavity (101). The upper surface of the lower positioning component (4) is provided with a lower heat dissipation hole (401) corresponding to the heat-conducting fins (203), and the lower heat dissipation hole (401) penetrates the lower positioning component (4).

2. The welding fixture according to claim 1, characterized in that: The tooling is a cuboid structure made of graphite. The substrate (201) is made of ferritic stainless steel, and the heating plate (202) is made of aluminum alloy.

3. The welding fixture according to claim 1, characterized in that: Several of the welding vents (102) are distributed along the length of the receiving cavity (101) and extend to cover all the heat-conducting fins (203); The welding vent (102) is located on the lower surface of the upper positioning component (3) or the upper surface of the lower positioning component (4).

4. The welding fixture according to claim 1, characterized in that: The number of stress relief grooves (103) is not less than two sets, and the two sets of stress relief grooves (103) are centrally symmetrical.

5. The welding fixture according to claim 1, characterized in that: One end of the stress relief groove (103) is connected to the receiving cavity (101), and the other end of the stress relief groove (103) is connected to the welding vent (102).

6. The welding fixture according to claim 1, characterized in that: The upper positioning component (3) is a cuboid structure with an opening on the upper side, and the lower positioning component (4) is a cuboid structure with an opening on the lower side.

7. The welding fixture according to claim 1, characterized in that: The upper positioning component (3) has a set of first heat dissipation holes (302) on both the front and rear sides; The upper positioning component (3) has a set of second heat dissipation holes (303) on both the left and right sides.

8. The welding fixture according to claim 1, characterized in that: The lower positioning component (4) is provided with a set of third heat dissipation holes (402) on both the front and rear sides; The lower positioning component (4) has a set of fourth heat dissipation holes (403) on both the left and right sides.

9. A heater module, characterized in that: It is manufactured by the welding fixture according to any one of claims 1-8.

10. An integrated modular electric compressor, characterized in that: Includes the heater module as described in claim 9.

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