Transformer capable of reducing heat damage

Abstract

The invention discloses a transformer capable of reducing thermal damage, and relates to the technical field of transformers, the transformer comprises a protective shell, the protective shell is provided with a winding framework and a magnetic core, the winding framework is provided with a magnetic core penetrating hole arranged along a first direction, the outer side of the winding framework is provided with a winding groove, and the winding groove is used for winding a primary winding and a secondary winding; the magnetic core is arranged on the magnetic core penetrating hole in a penetrating mode in the first direction, and the protection shell is further provided with a magnetic attraction actuating heat dissipation assembly; the magnetic attraction actuation heat dissipation assembly is configured to perform magnetic attraction actuation to a heat dissipation state by a magnetic field obtained by the magnetic core when the primary winding and the secondary winding are electrified; when the magnetic attraction fails due to power failure, resetting to a protection state is carried out; through a heat dissipation state and a protection state which are respectively formed when the heat dissipation assembly is powered on and powered off by magnetic attraction, the transformer can be assisted in heat dissipation when the transformer is powered on to work, so that heat damage is reduced; and the transformer can be protected during power failure, and the practicability is good.

Description

Technical Field

[0001] The invention relates to the technical field of transformers, and in particular to a transformer capable of reducing thermal damage. Background Art

[0002] Transformers are widely used in scenarios such as electrical quantity conversion, energy transfer, and system isolation in power electronics, wireless communications, medical equipment, and consumer electronics.

[0003] The structure of the transformer is as shown in the Chinese invention application "A transformer skeleton and transformer" with publication number CN214588396U, which includes a pin base, a winding skeleton and a magnetic core; the magnetic core includes a first magnetic core and a second magnetic core that are adapted to each other, the first magnetic core is located on the top of the second magnetic core, a first magnetic column is formed on a side of the middle part of the first magnetic core close to the second magnetic core, a second magnetic column is formed on a side of the middle part of the second magnetic core close to the first magnetic core, and the first magnetic column and the second magnetic column are coaxial; a connecting piece is provided on the magnetic core, and the first magnetic core and the second magnetic core are relatively fixed by the connecting piece; the winding skeleton is sleeved outside the first magnetic column and the second magnetic column.

[0004] When powered on, the transformer will generate heat, especially when the load is too large. Excessive temperature may accelerate the aging of the transformer's insulation material and even cause a fire. Currently, the heat dissipation method of the transformer is relatively simple and needs to be improved. Summary of the invention

[0005] In order to overcome the above-mentioned shortcomings, the present invention aims to provide a technical solution that can solve the above-mentioned problems.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a transformer for reducing thermal damage, comprising a protective shell, a winding frame and a magnetic core are arranged on the protective shell, the winding frame has a magnetic core penetration hole arranged along a first direction, the outer side of the winding frame is provided with a winding groove surrounding the magnetic core penetration hole along the circumference of the magnetic core penetration hole, the winding groove is used for winding a primary winding and a secondary winding, the magnetic core is penetrated on the magnetic core penetration hole along the first direction, and a magnetically actuated heat dissipation component is also arranged on the protective shell; the magnetically actuated heat dissipation component is configured to be magnetically actuated to a heat dissipation state by the magnetic field obtained by the magnetic core when the primary winding and the secondary winding are energized; and reset to a protection state when the power is cut off and the magnetic attraction fails.

[0007] As a further solution of the present invention: the part with the winding groove in the winding skeleton is located in the protective shell, and the outer side of the protective shell is penetrated by a heat dissipation connecting groove corresponding to the internal winding skeleton; the magnetically actuated heat dissipation component includes a protective cover movably arranged on the protective shell, the protective cover moves on the protective shell and forms a first movable position for blocking the heat dissipation connecting groove or intensifying the blocking of the heat dissipation connecting groove, and a second movable position for disengaging from the blocking of the heat dissipation connecting groove or reducing the blocking of the heat dissipation connecting groove; the protective cover is provided with a magnetically attracted part and an elastic reset part; when the primary winding and the secondary winding are energized, the magnetically attracted part on the protective cover is magnetically attracted by the magnetic field obtained by the magnetic core, so that the protective cover moves from the first movable position to the second movable position, and the elastic reset part is in an elastic deformation state or in an intensified elastic deformation state; when the primary winding and the secondary winding are powered off and the magnetic attraction fails, the elastic reset part performs elastic deformation recovery, so that the protective cover moves from the second movable position to the first movable position.

[0008] As a further solution of the present invention: the heat dissipation connecting groove is arranged on the outer side of the protective shell parallel to the first direction, and the protective cover moves along the first direction.

[0009] As a further scheme of the present invention: the protective shell has a connecting groove that penetrates two opposite outer sides of the protective shell along a first direction, and the connecting groove forms a first penetration opening and a second penetration opening on the two opposite outer sides respectively after penetrating the two opposite outer sides along the first direction; the winding skeleton includes a winding post arranged along the first direction, a wiring end connected to one end of the winding post, and a functional end located at the other end of the winding post; the functional end is detachably arranged from the winding post, a winding lead-out port and a connecting pin are arranged on the wiring end, and the winding groove is arranged on the outer side of the winding post; the other end of the winding post is inserted into the protective shell from the first penetration opening or the second penetration opening, and the functional end is correspondingly engaged with one end of the winding post at the second penetration opening or the first penetration opening, and when engaging, the functional end and the wiring end form opposite clamping of the protective shell in the first direction.

[0010] As a further solution of the present invention: a slide rail arranged along the first direction is arranged on the functional end, and a slider matching the slide rail is connected to the protective cover; the protective cover moves on the outer side of the protective shell where the heat dissipation connecting groove is located.

[0011] As a further solution of the present invention: the heat dissipation connecting groove penetrates two opposite outer sides of the protective shell along a second direction perpendicular to the first direction, and forms a first heat dissipation opening and a second heat dissipation opening respectively on the two opposite outer sides penetrated; after the winding pole is inserted into the protective shell, a gas flow channel connected to the first heat dissipation opening and the second heat dissipation opening is provided between the inner wall of the protective shell and the winding wound on the winding pole.

[0012] As a further solution of the present invention: the protective cover has a first portion corresponding to the first heat dissipation opening, and a second portion corresponding to the second heat dissipation opening.

[0013] As a further solution of the present invention: the magnetic pole direction of the magnetic field obtained by the magnetic core is parallel to the first direction.

[0014] As a further solution of the present invention: the magnetically attracted member is connected to the slider, and the magnetically attracted member corresponds to the magnetic poles formed after the magnetic core obtains the magnetic field; the elastic reset member is located between the slider and the inner wall of the slide rail; when the slider slides along the first direction and not along the direction close to the wiring end, the elastic reset member is elastically deformed by the inner wall of the slider and the slide rail.

[0015] As a further solution of the present invention: the winding skeleton also includes a connecting belt, which wraps the functional end and the wiring end tightly on the protective shell; wherein, the slider is placed in the slide rail from the opening at one end of the slide rail away from the wiring end, and when the connecting belt is wrapped tightly, the connecting belt forms a limiting structure for preventing the slider from falling out.

[0016] Compared with the prior art, the beneficial effects of the present technical solution are as follows: the heat dissipation state and the protection state formed by the magnetically actuated heat dissipation component when power is on and power is off respectively, so that the transformer can be assisted in heat dissipation when power is on to reduce heat damage; and the transformer can be protected when power is off, which has good practicality.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 is a structural stereogram of the present invention, with the protective cover in a first active position; Figure 2 is another structural stereogram of the present invention, with the protective cover in a second active position; Figure 3 It is another structural stereogram of the present invention, and Figure 1 In comparison, it hides the magnetically actuated heat dissipation component; Figure 4 It is a structural cross-sectional view of the present invention.

[0020] The corresponding reference numerals in the accompanying drawings are described as follows: Protective case - 1, Winding frame-2, connection end-201, functional end-202, winding column-203, winding lead-out port-204, connecting pin-205, connecting belt-206, Magnetic core-3, columnar part-301, Magnetic core penetration hole - 4, Winding slot - 5, Magnetic actuated heat dissipation component-6, protective cover-601, magnetically attracted component-602, elastic reset component-603, Heat dissipation connecting groove-7, first heat dissipation opening-701, second heat dissipation opening-702, The first through opening-8a, the second through opening-8b, Slide rail-9, Slider - 10, Gas flow channel-11. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] See also Figure 1-4 A transformer for reducing heat damage includes a protective shell 1, on which a winding skeleton 2 and a magnetic core 3 are arranged, the winding skeleton 2 has a magnetic core penetration hole 4 arranged along a first direction, and the outer side of the winding skeleton 2 is provided with a winding groove 5 surrounding the magnetic core penetration hole 4 along the circumference of the magnetic core penetration hole 4, the winding groove 5 is used for winding a primary winding and a secondary winding, the magnetic core 3 is penetrated on the magnetic core penetration hole 4 along the first direction, and a magnetically actuated heat dissipation component 6 is also arranged on the protective shell 1.

[0023] The magnetically actuated heat dissipation component 6 is configured such that when the primary winding and the secondary winding are energized, the magnetic field obtained by the magnetic core 3 is magnetically actuated to a heat dissipation state; when the power is cut off and the magnetic attraction fails, it is reset to a protection state.

[0024] In some embodiments, the portion of the winding frame 2 having the winding groove is located inside the protective shell 1 , and the outer side of the protective shell 1 is penetrated by a heat dissipation connecting groove 7 corresponding to the inner winding frame 2 .

[0025] The magnetically actuated heat dissipation component 6 includes a protective cover 601 movably arranged on the protective shell 1. The protective cover 601 moves on the protective shell 1 and forms a first movable position for blocking the heat dissipation connecting groove 7 or intensifying the blocking of the heat dissipation connecting groove 7, and a second movable position for disengaging from the blocking of the heat dissipation connecting groove 7 or reducing the blocking of the heat dissipation connecting groove 7.

[0026] The protective cover 601 is provided with a magnetically attracted member 602 and an elastic reset member 603. When the primary winding and the secondary winding are powered on, the magnetically attracted member 602 on the protective cover 601 is magnetically attracted by the magnetic field obtained by the magnetic core, causing the protective cover 601 to move from the first active position to the second active position, so that the heat in the protective shell 1 can be discharged faster, reducing the heat accumulation of the winding and the magnetic core. At this time, the elastic reset member 603 is in an elastic deformation state or in an aggravated elastic deformation state; when the power is cut off and the magnetic attraction fails, the elastic reset member 603 performs elastic deformation recovery accordingly, so that the protective cover 601 moves from the second active position to the first active position, forming a reset effect. At this time, the protective cover 601 forms a blockage on the heat dissipation connecting groove 7, so that the winding in the protective shell 1 is further protected.

[0027] In some embodiments, the protective shell 1 has a through-connecting groove that penetrates two opposite outer sides of the protective shell 1 along a first direction. After the through-connecting groove penetrates the two opposite outer sides along the first direction, a first through-connecting opening 8a and a second through-connecting opening 8b are respectively formed on the two opposite outer sides.

[0028] like Figure 3 As shown, the connecting groove is arranged to penetrate the upper and lower sides of the protective shell 1 .

[0029] In some embodiments, the winding frame 2 includes a winding post 203 arranged along a first direction, a wiring end 201 connected to one end of the winding post 203, and a functional end 202 located at the other end of the winding post 203. The functional end 202 and the winding post 203 are detachably arranged, the wiring end 201 is provided with a winding lead-out port 204 and a connecting pin 205, and the winding groove 5 is arranged on the outer side of the winding post 203.

[0030] After the other end of the winding post 203 passes through the protective shell 1 from the first penetration opening 8a (or the second penetration opening), the functional end 202 can be engaged with one end of the winding post 203 at the second penetration opening 8b (or the first penetration opening).

[0031] When being joined, the functional end portion 202 and the connection end portion 201 can clamp the protective shell 1 in the first direction.

[0032] In some embodiments, the winding skeleton 2 further includes a connecting belt 206 , and the connecting belt 206 tightly wraps the functional end 202 and the wiring end 201 on the protective shell 1 .

[0033] like Figure 1 , 3 As shown, for example, the first through-opening 8 a is located on the bottom side of the protective shell 1 , and the second through-opening 8 b is located on the top side of the protective shell 1 .

[0034] The winding post 203 passes through the protective shell 1 from the first opening 8a, and the connection end 201 forms an abutment with the bottom side of the protective shell 1; the functional end 202 approaches the upper end of the winding post 203 from top to bottom, and forms an abutment on the top side of the protective shell 1 from top to bottom.

[0035] The connecting belt 206 wraps the functional end 202 and the wiring end 201 tightly onto the protective shell 1 along a wrapping route of the top of the functional end 202 - the right side of the protective shell 1 - the bottom of the wiring end 201 - the left side of the protective shell 1, so that the functional end 202 and the wiring end 201 form a clamp on the protective shell 1 in the up and down directions.

[0036] In some embodiments, the magnetic core 3 has a columnar portion 301, which penetrates the magnetic core penetration hole 4 from bottom to top. When the primary winding and the secondary winding are energized, a magnetic pole direction is formed on the top of the columnar portion 301 along the first direction.

[0037] In some embodiments, the heat dissipation connecting groove 7 is arranged on the outer side of the protective shell 1 parallel to the first direction, and the protective cover 601 moves along the first direction.

[0038] In some embodiments, a slide rail 9 is provided on the functional end 202, and a slider 10 cooperating with the slide rail 9 is connected to the protective cover 601. The protective cover 601 is slidably disposed on the slide rail 9 along the first direction through the slider 10, and can slide to the first active position and the second active position accordingly.

[0039] The protective cover 601 moves on the outer side of the protective shell 1 where the heat dissipation connecting groove 7 is located, and when the protective cover 601 moves to the first active position, the protective cover 601 moves along the first direction to block the notch of the heat dissipation connecting groove 7 or to block the notch of the heat dissipation connecting groove 7 more; when the protective cover 601 moves to the second active position, the protective cover 601 moves along the first direction to disengage from blocking the notch of the heat dissipation connecting groove 7 or to block the notch of the heat dissipation connecting groove 7 less.

[0040] In some embodiments, the heat dissipation connecting groove 7 penetrates two opposite outer sides of the protective shell 1 along a second direction perpendicular to the first direction, and forms a first heat dissipation opening 701 and a second heat dissipation opening 702 on the two opposite outer sides respectively.

[0041] like Figure 1 , 3As shown, the heat dissipation connecting groove 7 runs through the front and rear sides of the protective shell 1.

[0042] In some embodiments, after the winding pole 203 is inserted into the protective shell 1, a gas flow channel 11 connected to the first heat dissipation opening 701 and the second heat dissipation opening 702 is provided between the inner wall of the protective shell 1 and the winding (primary winding, secondary winding) wound on the winding pole 203, thereby achieving a better heat dissipation effect.

[0043] In some embodiments, the protection cover 601 has a first portion corresponding to the first heat dissipation opening 701 , and a second portion corresponding to the second heat dissipation opening 702 .

[0044] In some embodiments, the transformer is used in a circuit system with an air-cooling module. Through the first heat dissipation opening, the second heat dissipation opening and the gas flow channel, when the primary winding and the secondary winding are energized, the transformer can be better air-cooled by the air-cooling module in the circuit system through the open gas flow channel; when the primary winding and the secondary winding are de-energized, the gas flow channel can be switched to a closed state, thereby reducing damage to the windings inside the protective shell.

[0045] In some embodiments, the magnetic pole direction of the magnetic field obtained by the magnetic core 3 is parallel to the first direction.

[0046] In some embodiments, the slide rail 9 is formed on a side of the functional end 202 away from the connection end 201 along the first direction, and the slider 10 is slidably disposed on the slide rail along the first direction.

[0047] The slider 10 can be inserted into the slide rail 9 from the opening at one end of the slide rail 9 away from the wiring end 201. When the connecting belt 206 is tightened, the connecting belt 206 forms a corresponding limiting structure for preventing the slider 10 from falling out. The structure is simple and ingenious, easy to install and stable.

[0048] In some embodiments, the magnetically attracted member 602 is connected to the slider 10 , and the magnetically attracted member 602 corresponds to the magnetic poles formed after the magnetic core 3 obtains the magnetic field.

[0049] In some embodiments, the elastic return member 603 is an elastic component such as a spring (such as a compression spring) or a spring sheet.

[0050] The elastic reset member 603 is located between the slider 10 and the inner wall of the slide rail 9. When the slider 10 slides along the first direction and in the direction close to the wiring end 201, the elastic reset member 603 is pressed by the slider 10 and the inner wall of the slide rail 9 to elastic deformation.

[0051] In some embodiments, the magnetically attracted object is, for example, an iron block.

[0052] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A transformer for reducing heat damage, comprising a protective shell, a winding frame and a magnetic core are arranged on the protective shell, the winding frame has a magnetic core penetration hole arranged along a first direction, the outer side of the winding frame is provided with a winding groove surrounding the magnetic core penetration hole along the circumference of the magnetic core penetration hole, the winding groove is used to wind the primary winding and the secondary winding, the magnetic core is penetrated on the magnetic core penetration hole along the first direction, characterized in that, The protective shell is also provided with a magnetically actuated heat dissipation component; The magnetically actuated heat dissipation component is constructed such that when the primary winding and the secondary winding are energized, the magnetic field obtained by the magnetic core is magnetically actuated to a heat dissipation state; when the power is cut off and the magnetic attraction fails, it is reset to a protection state.

2. The transformer with reduced thermal damage according to claim 1, characterized in that: The portion of the winding frame with the winding groove is located inside the protective shell, and the outer side of the protective shell is penetrated by a heat dissipation connecting groove corresponding to the internal winding frame; The magnetically actuated heat dissipation assembly includes a protective cover movably arranged on the protective shell, the protective cover moves on the protective shell and forms a first movable position for blocking the heat dissipation connection groove or aggravating the blocking of the heat dissipation connection groove, and a second movable position for disengaging from the blocking of the heat dissipation connection groove or reducing the blocking of the heat dissipation connection groove; The protective cover is provided with a magnetically attracted component and an elastic reset component; When the primary winding and the secondary winding are energized, the magnetically attracted member on the protective cover is magnetically attracted by the magnetic field obtained by the magnetic core, so that the protective cover moves from the first active position to the second active position, and the elastic reset member is in an elastic deformation state or in an aggravated elastic deformation state; When the primary winding and the secondary winding are powered off and the magnetic attraction fails, the elastic reset member recovers by elastic deformation, so that the protective cover moves from the second active position to the first active position.

3. The transformer with reduced thermal damage according to claim 2, characterized in that: The heat dissipation connecting groove is arranged on the outer side of the protective shell parallel to the first direction, and the protective cover moves along the first direction.

4. The transformer with reduced thermal damage according to claim 3, characterized in that: The protective shell has a through-connecting groove penetrating two opposite outer sides of the protective shell along a first direction, and the through-connecting groove forms a first through-opening and a second through-opening on the two opposite outer sides respectively after penetrating the two opposite outer sides along the first direction; The winding frame includes a winding post arranged along a first direction, a wiring end connected to one end of the winding post, and a functional end located at the other end of the winding post; the functional end and the winding post are detachably arranged, the wiring end is provided with a winding lead-out port and a connecting pin, and the winding groove is arranged on the outer side of the winding post; The other end of the winding post is inserted into the protective shell from the first penetration opening or the second penetration opening, and the functional end is correspondingly engaged with one end of the winding post at the second penetration opening or the first penetration opening. When engaging, the functional end and the wiring end form opposite clamping of the protective shell in the first direction.

5. The transformer with reduced thermal damage according to claim 4, characterized in that: The functional end is provided with a slide rail arranged along a first direction, and the protective cover is connected with a slider matched with the slide rail; The protection cover moves on the outer side of the protection shell where the heat dissipation connecting groove is located.

6. The transformer with reduced thermal damage according to claim 5, characterized in that: The heat dissipation connecting groove penetrates two opposite outer sides of the protective shell along a second direction perpendicular to the first direction, and forms a first heat dissipation opening and a second heat dissipation opening on the two opposite outer sides respectively; After the winding post is inserted into the protective shell, a gas flow channel communicating with the first heat dissipation opening and the second heat dissipation opening is provided between the inner wall of the protective shell and the winding wound on the winding post.

7. The transformer with reduced thermal damage according to claim 6, characterized in that: The protection cover has a first portion corresponding to the first heat dissipation opening, and a second portion corresponding to the second heat dissipation opening.

8. The transformer with reduced thermal damage according to any one of claims 5 to 7, characterized in that: The magnetic pole direction of the magnetic field obtained by the magnetic core is parallel to the first direction.

9. The transformer with reduced thermal damage according to claim 8, characterized in that: The magnetically attracted part is connected to the slider, and the magnetically attracted part corresponds to the magnetic poles formed after the magnetic core obtains the magnetic field; The elastic reset member is located between the slider and the inner wall of the slide rail; when the slider slides along the first direction and in the direction close to the wiring end, the elastic reset member is elastically deformed by the slider and the inner wall of the slide rail.

10. The transformer with reduced thermal damage according to claim 5, 6, 7 or 9, characterized in that: The winding frame also includes a connecting belt, which wraps the functional end and the wiring end tightly on the protective shell; The slider is inserted into the slide rail from an opening at one end of the slide rail away from the wiring end. When the connecting belt is tightened, the connecting belt forms a corresponding limiting structure for preventing the slider from falling out.

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