Miniature outer-seal linear compressor coil welding wire soft cable
By designing a flexible cable for welding coils in a miniature externally sealed linear compressor, the problems of high welding difficulty and easy damage to weld points were solved, achieving a stable and reliable welding effect, which is suitable for miniature externally sealed linear compressors.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUHAN GAOXIN TECH
- Filing Date
- 2025-04-11
- Publication Date
- 2026-06-12
AI Technical Summary
In the existing technology, the welding process of miniature externally sealed linear compressors is difficult to operate and is prone to problems such as overlapping welding, excessively high solder joints, short circuits, and high temperature at solder joints leading to damage to the enamel coating of the coil windings.
A miniature externally sealed linear compressor coil welding wire busbar is adopted, including a base plate and multiple welding pads. The coil winding and the pin are connected through the conductive channel. The welding area is covered with a solder resist cover film. The base plate is made of polyimide and coated with adhesive to achieve single wire welding and avoid overlapping welding and high temperature damage.
It reduces the difficulty of operation, improves the consistency and stability of welding, prevents short circuits, ensures welding reliability and high temperature resistance, and avoids short circuits caused by contact between the weld point and the compressor housing.
Smart Images
Figure CN224355908U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of linear compressor technology, specifically to a miniature externally sealed linear compressor coil welding wire busbar. Background Technology
[0002] A linear compressor is a common type of compressor that works by using a piston that reciprocates linearly within a cylinder to compress gas. Linear compressors can be classified into internal and external seal compressors based on their sealing methods. Internal seal compressors primarily seal the channels through which the refrigerant (such as helium) circulates within the compressor, preventing unnecessary leakage between internal chambers. The seals are mainly located between the compression and expansion chambers, and between the regenerator and the cylinder. External seal compressors primarily prevent impurities such as air, dust, and moisture from entering the compressor, while also preventing the refrigerant from leaking into the external environment. The seals are located at the connection points between the refrigerant casing and internal components.
[0003] For miniature externally sealed compressors, the enameled wire of the linear motor coil needs to be connected to the external power supply through a copper terminal sealed by glass sintering. This copper terminal runs through the inside and outside of the compressor, and insulation and sealing with the compressor's metal materials are achieved through glass sintering. How to effectively connect the enameled wire to the terminal in the compact space inside the compressor (the welding space is 10mm long, 5mm wide, and 1.2mm high), with stable welding process, strong operability, and no risk of short circuits or poor contact, is a difficult point that needs to be overcome in the compressor process.
[0004] In the existing solution, the two terminals inside the compressor are soldered to two flexible wires of different colors, and the flexible wires are soldered to the enameled wire of the linear motor coil winding; the external power supply provides current to the linear motor coil inside the compressor by connecting to the outer terminal of the compressor pin.
[0005] However, the existing soldering operation between soft wires and enameled wires is difficult, and overlapping soldering is prone to occur during operation. The solder joints are too high. If the solder joints exceed the outer diameter of the soft magnetic outer circle, the compressor casing cannot be assembled. In addition, the solder joints are prone to contact with the compressor casing, causing short circuit faults. At the same time, the high temperature generated during the soldering process can easily burn through the enamel coating of the coil winding below the solder joint, causing the solder joint to conduct through the motor winding. Furthermore, the solder can easily form sharp points during the wire soldering process, which can easily scratch through the enamel coating of the bottom coil winding, leading to a short circuit. Utility Model Content
[0006] The purpose of this invention is to provide a flexible cable for coil bonding of a miniature externally sealed linear compressor, so as to solve the problems mentioned in the background art.
[0007] To achieve the above objectives, this utility model provides the following technical solution:
[0008] A miniature externally sealed linear compressor coil bonding wire busbar, used in a compressor, comprising:
[0009] A base plate is provided with a first pad, a second pad, a third pad, and a fourth pad. The first pad and the second pad are connected and conductive through a conductive channel, and the third pad and the fourth pad are connected and conductive through a conductive channel.
[0010] The compressor includes an A-side compressor and a B-side compressor. The A-side compressor and the B-side compressor each include an A-side coil winding and a B-side coil winding. The A-side coil winding is electrically connected to the fourth pad and the first pad, respectively. The B-side coil winding is electrically connected to the third pad and the second pad.
[0011] The positive terminal pin is electrically connected to the third and fourth pads;
[0012] The negative terminal pin is electrically connected to the second pad and the first pad.
[0013] Preferably, a first solder mask is provided on the conductive channel between the first pad and the second pad, and a second solder mask is provided on the conductive channel between the third pad and the fourth pad.
[0014] Preferably, the positive electrode pin is disposed between the compressor on side A and the compressor on side B, and the negative electrode pin is located on one side of the positive electrode pin.
[0015] Preferably, the back of the base plate is coated with adhesive, and the base plate is made of polyimide.
[0016] Preferably, the A-side coil winding is electrically connected to an A-side winding inlet enameled wire and an A-side winding outlet enameled wire, and the other end of the A-side winding inlet enameled wire is soldered to the fourth solder pad, and the other end of the A-side winding outlet enameled wire is soldered to the first solder pad.
[0017] Preferably, the B-side coil winding is connected to a B-side winding inlet enameled wire and a B-side winding outlet enameled wire, the other end of the B-side winding inlet enameled wire is soldered to the third pad, and the other end of the B-side winding outlet enameled wire is soldered to the fourth pad.
[0018] Preferably, the positive electrode pin has a second wire on side A and a second wire on side B soldered to its inner side, the other end of the second wire on side A is soldered to the third pad, and the other end of the second wire on side B is soldered to the fourth pad.
[0019] Preferably, the inner side of the negative electrode pin is soldered with a first wire on side A and a first wire on side B, the other end of the first wire on side A is soldered to the second pad, and the other end of the first wire on side B is soldered to the first pad.
[0020] Compared with the prior art, the beneficial effects of this utility model are:
[0021] 1. It enables single-wire welding, greatly reducing the difficulty of operation for operators, improving the consistency and stability of welding, and effectively preventing wire cold solder joints.
[0022] 2. The flexible busbar allows for partitioned welding of single wires, effectively avoiding the overlap caused by direct welding of two wires, reducing the height of the weld point, and preventing short circuits caused by contact between the weld point and the compressor housing within the limited welding space.
[0023] 3. The high temperature resistance and insulation properties of the flexible busbar substrate can effectively prevent the high temperature or solder sharp corners generated during the direct welding process from damaging the enamel coating of the coil winding, which would lead to a short circuit between the solder joint and the coil, thus further improving the reliability and stability of the welding. Attached Figure Description
[0024] Figure 1 This is a schematic diagram of the wire bonding flexible busbar structure of this utility model;
[0025] Figure 2 This is a side view of the wire bonding flexible busbar structure of this utility model;
[0026] Figure 3 A schematic diagram showing the compressor of this utility model after the installation of the wire bonding cable structure;
[0027] Figure 4 This is a schematic diagram of the compressor of this utility model before the installation of the wire bonding cable structure.
[0028] In the diagram: Base plate 1, First solder pad 2, Second solder pad 3, Third solder pad 4, Fourth solder pad 5, First solder resist cover film 6, Second solder resist cover film 7, Adhesive backing 8, Compressor on side A 9, Coil winding on side A 10, Enamelled wire at the inlet of winding on side A 11, First conductor on side A 12, Enamelled wire at the outlet of winding on side A 13, Second conductor on side A 14, Compressor on side B 15, Coil winding on side B 16, Enamelled wire at the inlet of winding on side B 17, First conductor on side B 18, Enamelled wire at the outlet of winding on side B 19, Second conductor on side B 20, Positive pin 21, Negative pin 22. Detailed Implementation
[0029] To more clearly illustrate the overall concept of this utility model, a detailed description will be provided below with reference to the accompanying drawings.
[0030] It should be noted that many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.
[0031] Furthermore, it should be understood in the description of this utility model that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0032] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral unit; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. However, specifying a direct connection indicates that the two main bodies at the connection point are not connected by an intermediate structure, but are simply connected to form a whole through a connecting structure. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.
[0033] In this utility model, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0034] A miniature externally sealed linear compressor coil bonding wire busbar, used in a compressor, comprising:
[0035] A base plate 1 is provided with a first pad 2, a second pad 3, a third pad 4, and a fourth pad 5. The first pad 2 and the second pad 3 are connected and conductive through a conductive channel, and the third pad 4 and the fourth pad 5 are connected and conductive through a conductive channel.
[0036] The compressor includes an A-side compressor 9 and a B-side compressor 15. The A-side compressor 9 and the B-side compressor 15 each include an A-side coil winding 10 and a B-side coil winding 16. The A-side coil winding 10 is electrically connected to the fourth pad 5 and the first pad 2, respectively. The B-side coil winding 16 is electrically connected to the third pad 4 and the second pad 3.
[0037] The positive electrode pin 21 is electrically connected to the third pad 4 and the fourth pad 5;
[0038] The negative terminal pin 22 is electrically connected to the second pad 3 and the first pad 2.
[0039] A first solder mask 6 covers the conductive channel between the first pad 2 and the second pad 3, and a second solder mask 7 covers the conductive channel between the third pad 4 and the fourth pad 5.
[0040] The positive electrode pin 21 is disposed between the compressor 9 on side A and the compressor 15 on side B, and the negative electrode pin 22 is located on one side of the positive electrode pin 21.
[0041] The back of the base plate 1 is coated with adhesive 8, and the base plate 1 is made of polyimide.
[0042] The A-side coil winding 10 is electrically connected to an A-side winding inlet enameled wire 11 and an A-side winding outlet enameled wire 13, with the other end of the A-side winding inlet enameled wire 11 soldered to the fourth solder pad 5, and the other end of the A-side winding outlet enameled wire 13 soldered to the first solder pad 2.
[0043] The B-side coil winding 16 is connected to the B-side winding inlet enameled wire 17 and the B-side winding outlet enameled wire 19. The other end of the B-side winding inlet enameled wire 17 is soldered to the third solder pad 4, and the other end of the B-side winding outlet enameled wire 19 is soldered to the fourth solder pad 5.
[0044] The positive electrode pin 21 is soldered with a second wire 14 on side A and a second wire 20 on side B. The other end of the second wire 14 on side A is soldered to the third pad 4, and the other end of the second wire 20 on side B is soldered to the fourth pad 5.
[0045] The negative electrode pin 22 has an A-side first wire 12 and a B-side first wire 18 soldered on its inner side. The other end of the A-side first wire 12 is soldered to the second pad 3, and the other end of the B-side first wire 18 is soldered to the first pad 2.
[0046] By using the base plate 1 and the adhesive backing 8, the flexible cable for soldering is installed to the compressor.
[0047] The welding wires of compressor 9 on side A: the enameled wire 13 of the winding outlet on side A is welded to the first pad 2, the second wire 14 on side A is welded to the third pad 4, the enameled wire 11 of the winding inlet on side A is welded to the fourth pad 5, and the first wire 12 on side A is welded to the second pad 3.
[0048] The welding wires of compressor 15 on side B: the first wire 18 on side B is welded to the first pad 2, the enameled wire 17 at the winding inlet on side B is welded to the third pad 4, the second wire 20 on side B is welded to the fourth pad 5, and the enameled wire 19 at the winding outlet on side B is welded to the second pad 3.
[0049] Through the above welding, the inlet enameled wire 11 of the A-side winding and the inlet enameled wire 17 of the B-side winding can be led out by the positive pole pin 21, and the outlet enameled wire 13 of the A-side winding and the outlet enameled wire 19 of the B-side winding can be led out by the negative pole pin 22.
[0050] After welding the outer casings of compressor 9 on side A and compressor 15 on side B respectively, a micro linear Stirling refrigeration compressor with an external seal is realized, which supplies power to the internal coil winding of the compressor through a sealable and pressure-bearing pin.
[0051] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.
[0052] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A miniature externally sealed linear compressor coil welding wire busbar, used in a compressor, characterized in that, include: A base plate (1) is provided with a first pad (2), a second pad (3), a third pad (4), and a fourth pad (5). The first pad (2) and the second pad (3) are connected and conductive through a conductive channel, and the third pad (4) and the fourth pad (5) are connected and conductive through a conductive channel. The compressor includes an A-side compressor (9) and a B-side compressor (15). The A-side compressor (9) and the B-side compressor (15) respectively include an A-side coil winding (10) and a B-side coil winding (16). The A-side coil winding (10) is electrically connected to the fourth pad (5) and the first pad (2) respectively. The B-side coil winding (16) is electrically connected to the third pad (4) and the second pad (3). The positive electrode pin (21) is electrically connected to the third pad (4) and the fourth pad (5); The negative electrode pin (22) is electrically connected to the second pad (3) and the first pad (2).
2. The flexible coil bonding busbar for the miniature externally sealed linear compressor according to claim 1, characterized in that, The conductive channel between the first pad (2) and the second pad (3) is covered with a first solder mask cover film (6), and the conductive channel between the third pad (4) and the fourth pad (5) is covered with a second solder mask cover film (7).
3. The flexible coil bonding busbar for the miniature externally sealed linear compressor according to claim 1, characterized in that, The positive electrode pin (21) is disposed between the compressor (9) on side A and the compressor (15) on side B, and the negative electrode pin (22) is located on one side of the positive electrode pin (21).
4. The flexible coil bonding busbar for the miniature externally sealed linear compressor according to claim 1, characterized in that, The back of the base plate (1) is coated with adhesive (8), and the base plate (1) is made of polyimide.
5. The flexible coil bonding busbar for the miniature externally sealed linear compressor according to claim 1, characterized in that, The A-side coil winding (10) is electrically connected to the A-side winding inlet enameled wire (11) and the A-side winding outlet enameled wire (13), and the other end of the A-side winding inlet enameled wire (11) is soldered to the fourth solder pad (5), and the other end of the A-side winding outlet enameled wire (13) is soldered to the first solder pad (2).
6. The flexible coil bonding busbar for the miniature externally sealed linear compressor according to claim 1, characterized in that, The B-side coil winding (16) is connected to the B-side winding inlet enameled wire (17) and the B-side winding outlet enameled wire (19). The other end of the B-side winding inlet enameled wire (17) is soldered to the third solder pad (4), and the other end of the B-side winding outlet enameled wire (19) is soldered to the fourth solder pad (5).
7. The flexible coil bonding busbar for the miniature externally sealed linear compressor according to claim 5, characterized in that, The positive electrode pin (21) is welded with a second wire (14) on side A and a second wire (20) on side B. The other end of the second wire (14) on side A is welded to the third pad (4), and the other end of the second wire (20) on side B is welded to the fourth pad (5).
8. The flexible coil bonding busbar for the miniature externally sealed linear compressor according to claim 7, characterized in that, The negative electrode pin (22) has an A-side first wire (12) and a B-side first wire (18) soldered on its inner side. The other end of the A-side first wire (12) is soldered to the second pad (3), and the other end of the B-side first wire (18) is soldered to the first pad (2).