Transformer and new energy vehicle
Through the integrated bobbin and split core layout, combined with the heat sink design, the problems of skewed split bobbin assembly and cracking of large-size cores are solved, achieving efficient heat dissipation and cost reduction of the transformer.
Patent Information
- Application Number
- CN202422844684.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-21
- Publication Date
- 2025-09-30
- Estimated Expiration
- 2034-11-21
AI Technical Summary
The split-type bobbin is prone to skew during assembly, causing the primary and secondary windings to be relatively skewed, affecting the consistency of transformer production. At the same time, large-size magnetic cores are prone to cracking during processing and are difficult to dissipate, resulting in high costs.
An integrated skeleton and split core layout is adopted. The winding is wound on the skeleton. The first core and the second core are spliced and wrapped around the skeleton. A heat sink is provided inside the core. The core is designed as a half-body structure to reduce processing costs and heat dissipation difficulty.
The production consistency of the transformer is improved, the cost of core processing and assembly is reduced, and the heat dissipation efficiency is improved through the heat sink, avoiding the problem of cracking of large-size cores.
Smart Images
Figure CN223401464U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of new energy vehicles, in particular to a transformer and a new energy vehicle. Background Art
[0002] When using a split bobbin to mount the primary and secondary windings separately, the final assembly of the split bobbin is prone to skew, which in turn causes the primary and secondary windings to skew relative to each other, affecting transformer production consistency. Furthermore, when using a split bobbin, integrated magnetics are often used, which not only makes heat dissipation difficult but also increases processing and assembly costs. Utility Model Content
[0003] The purpose of the utility model is to provide a transformer and a new energy vehicle to alleviate the technical problem in the prior art that large-sized magnetic cores in transformers are prone to cracking during processing and molding.
[0004] In a first aspect, the utility model provides a transformer comprising: a skeleton, a winding, a first magnetic core and a second magnetic core;
[0005] The winding is wound around the frame;
[0006] The first magnetic core and the second magnetic core are arranged opposite to each other and spliced together, and the skeleton is wrapped between the first magnetic core and the second magnetic core.
[0007] In combination with the first aspect, the present invention provides a first possible implementation of the first aspect, wherein both the first magnetic core and the second magnetic core are provided with slots extending into the interior of the skeleton, and heat sinks are inserted into the slots.
[0008] In combination with the first possible implementation of the first aspect, the present invention provides a second possible implementation of the first aspect, wherein the heat sink has a bent portion that is attached to the top surface of the first magnetic core.
[0009] In combination with the first aspect, the present invention provides a third possible implementation of the first aspect, wherein both the first magnetic core and the second magnetic core include: a first half and a second half;
[0010] The first half body has a first core portion and a first side surrounding portion, and the second half body has a second core portion and a second side surrounding portion;
[0011] The first core portion and the second core portion are attached to each other and inserted into the interior of the frame, and the frame is wrapped between the first side surrounding portion and the second side surrounding portion.
[0012] In combination with the third possible implementation of the first aspect, the present invention provides a fourth possible implementation of the first aspect, wherein both the first side surrounding portion and the second side surrounding portion are configured with an arc surface portion extending along the circumferential direction of the winding.
[0013] In combination with the first aspect, the present invention provides a fifth possible implementation of the first aspect, wherein the skeleton has a first winding groove and a second winding groove, and the first winding groove and the second winding groove are separated by a convex ring portion.
[0014] In combination with the fifth possible implementation of the first aspect, the present invention provides a sixth possible implementation of the first aspect, wherein a leakage inductance magnetic sheet is installed on the convex ring portion.
[0015] In combination with the fifth possible implementation of the first aspect, the present invention provides a seventh possible implementation of the first aspect, wherein the winding includes: a primary winding and a secondary winding;
[0016] The primary winding is wound in the first winding slot, and the secondary winding is wound in the second winding slot.
[0017] In combination with the seventh possible implementation of the first aspect, the present invention provides an eighth possible implementation of the first aspect, wherein the first magnetic core or the second magnetic core is connected to the base, and the primary winding and the secondary winding are respectively extended and connected to the base.
[0018] In a second aspect, the new energy vehicle provided by the present invention is equipped with the transformer described in the first aspect.
[0019] The embodiments of the present utility model bring the following beneficial effects: the winding is wound around the skeleton, the first magnetic core and the second magnetic core are arranged opposite to each other and spliced, and the skeleton is wrapped between the first magnetic core and the second magnetic core. The split magnetic core layout reduces the technical difficulty of heat conduction and heat dissipation of the magnetic core, and can avoid the technical problem of easy cracking of large-size magnetic cores during processing and forming, which is conducive to reducing production costs.
[0020] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in related technologies, the following briefly introduces the drawings required for use in the specific implementation methods or related technical descriptions. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0022] Figure 1 An exploded diagram of a transformer provided in an embodiment of the present utility model;
[0023] Figure 2 A schematic diagram of a transformer provided in an embodiment of the present utility model;
[0024] Figure 3 A schematic diagram of a first magnetic core and a second magnetic core of a transformer provided in an embodiment of the present utility model;
[0025] Figure 4 A schematic diagram of a transformer skeleton provided by an embodiment of the present utility model;
[0026] Figure 5 A schematic diagram of another transformer provided in an embodiment of the present utility model.
[0027] Icons: 100 - skeleton; 101 - first winding slot; 102 - second winding slot; 103 - convex ring; 200 - winding; 210 - primary winding; 220 - secondary winding; 300 - first magnetic core; 310 - first half; 311 - first core portion; 312 - first side portion; 320 - second half; 321 - second core portion; 322 - second side portion; 400 - second magnetic core; 500 - heat sink; 501 - bending portion; 600 - leakage inductance magnetic plate; 700 - base. DETAILED DESCRIPTION
[0028] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.
[0029] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. Physical quantities in formulas, unless separately marked, should be understood as basic quantities of the International System of Units, or derived quantities derived from basic quantities through mathematical operations such as multiplication, division, differentiation or integration.
[0030] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.
[0031] like Figure 1 、 Figure 2 and Figure 5 As shown, the transformer provided by the embodiment of the present invention includes: a skeleton 100, a winding 200, a first magnetic core 300 and a second magnetic core 400; the winding 200 is wound on the skeleton 100; the first magnetic core 300 and the second magnetic core 400 are arranged opposite to each other and spliced, and the skeleton 100 is wrapped between the first magnetic core 300 and the second magnetic core 400.
[0032] The skeleton 100 is configured as a one-piece structure, which prevents deflection during assembly of a split skeleton 100. Furthermore, the first magnetic core 300 and the second magnetic core 400 are positioned opposite and joined together, facilitating heat dissipation from the first magnetic core 300 and the second magnetic core 400. The split magnetic core layout achieved by the first magnetic core 300 and the second magnetic core 400 reduces the size of a single magnetic core, avoids the technical issue of cracking that can occur when processing large magnetic cores, and helps reduce processing and assembly costs.
[0033] like Figure 1 、 Figure 2 and Figure 3 As shown, in an embodiment of the present invention, the first magnetic core 300 and the second magnetic core 400 are both provided with slots extending into the interior of the skeleton 100, and a heat sink 500 is inserted into the slot. The heat sink 500 can simplify the heat dissipation in the central area of the first magnetic core 300 and the second magnetic core 400, thereby improving the heat dissipation efficiency.
[0034] like Figure 1 As shown, the heat sink 500 has a bent portion 501 that fits against the top surface of the first magnetic core 300. The heat sink 500 is connected to the second magnetic core 400 or the base 700 and is pressed against the top surface of the first magnetic core 300 via the bent portion 501. The heat sink 500 not only conducts and dissipates heat, but also presses against the first magnetic core 300.
[0035] like Figure 1 、 Figure 2 and Figure 3As shown, the first magnetic core 300 and the second magnetic core 400 both include: a first half body 310 and a second half body 320; the first half body 310 has a first core body portion 311 and a first side surrounding portion 312, and the second half body 320 has a second core body portion 321 and a second side surrounding portion 322; the first core body portion 311 and the second core body portion 321 are bonded and inserted into the interior of the skeleton 100, and the skeleton 100 is wrapped between the first side surrounding portion 312 and the second side surrounding portion 322.
[0036] It should be noted that large-sized magnetic cores have difficulty dissipating heat and are prone to cracking during the processing and molding process. In this application, the first magnetic core 300 and the second magnetic core 400 are both configured as a first half 310 and a second half 320. The first half 310 and the second half 320 can be configured as a symmetrical structure and share a set of molds, which not only reduces processing costs but also reduces the difficulty of heat dissipation.
[0037] It should be noted that both the first side surrounding portion 312 and the second side surrounding portion 322 are configured with an arc portion extending along the circumferential direction of the winding 200 , so that the distance from the winding 200 to the arc portion can be relatively evenly distributed.
[0038] like Figure 1 and Figure 4 As shown, the skeleton 100 has a first winding groove 101 and a second winding groove 102 , and a convex ring portion 103 separates the first winding groove 101 and the second winding groove 102 .
[0039] Furthermore, the convex ring portion 103 is mounted with a leakage inductance magnetic sheet 600 .
[0040] In an optional embodiment, a notch may be provided on the convex ring portion 103 , and the leakage inductance magnetic sheet 600 is inserted into the notch, which not only facilitates assembly but also improves structural compactness.
[0041] Furthermore, the winding 200 includes: a primary winding 210 and a secondary winding 220 ; the primary winding 210 is wound in the first winding slot 101 , and the secondary winding 220 is wound in the second winding slot 102 .
[0042] The first magnetic core 300 or the second magnetic core 400 is connected to the base 700 . The primary winding 210 and the secondary winding 220 are respectively extended and connected to the base 700 . Wiring poles may be provided on the base 700 .
[0043] The new energy vehicle provided by the embodiment of the present invention is equipped with the transformer described in the above embodiment. The new energy vehicle has the beneficial effects of the above transformer, which will not be described in detail here.
[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.
Claims
1. A transformer, characterized in that: include: A skeleton (100), a winding (200), a first magnetic core (300), and a second magnetic core (400); The winding (200) is wound around the frame (100); The first magnetic core (300) and the second magnetic core (400) are arranged opposite to each other and spliced, and the skeleton (100) is wrapped between the first magnetic core (300) and the second magnetic core (400).
2. The transformer according to claim 1, characterized in that The first magnetic core (300) and the second magnetic core (400) are both provided with slots extending into the interior of the frame (100), and heat sinks (500) are inserted into the slots.
3. The transformer according to claim 2, characterized in that The heat sink (500) has a bent portion (501) attached to the top surface of the first magnetic core (300).
4. The transformer according to claim 1, characterized in that The first magnetic core (300) and the second magnetic core (400) both include: a first half body (310) and a second half body (320); The first half body (310) has a first core portion (311) and a first side surrounding portion (312), and the second half body (320) has a second core portion (321) and a second side surrounding portion (322); The first core portion (311) and the second core portion (321) are fitted together and inserted into the interior of the frame (100), and the frame (100) is wrapped between the first side surrounding portion (312) and the second side surrounding portion (322).
5. The transformer according to claim 4, characterized in that The first side surrounding portion (312) and the second side surrounding portion (322) are both configured with an arcuate portion extending along the circumferential direction of the winding (200).
6. The transformer according to claim 1, characterized in that The skeleton (100) has a first winding groove (101) and a second winding groove (102), and a convex ring portion (103) is provided between the first winding groove (101) and the second winding groove (102).
7. The transformer according to claim 6, characterized in that The convex ring portion (103) is mounted with a leakage inductance magnetic sheet (600).
8. The transformer according to claim 6, characterized in that The winding (200) includes: a primary winding (210) and a secondary winding (220); The primary winding (210) is wound in the first winding slot (101), and the secondary winding (220) is wound in the second winding slot (102).
9. The transformer according to claim 8, characterized in that The first magnetic core (300) or the second magnetic core (400) is connected to a base (700), and the primary winding (210) and the secondary winding (220) are respectively extended and connected to the base (700).
10. A new energy vehicle, characterized in that: The new energy vehicle is equipped with the transformer according to any one of claims 1 to 9.