Integrated transformer and inverter circuit thereof
By integrating the inverter unit, battery pack unit, transformer, rectifier unit, etc. in the transformer, the performance stability and reliability problems caused by the increase in devices in traditional inverter power supplies are solved, and the effect of reducing costs and improving system performance is achieved.
Patent Information
- Application Number
- CN202421577910.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-05
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2034-07-05
AI Technical Summary
In traditional inverter power supplies, the main power transformer is separated from the resonant inductor, and the auxiliary power supplies rely on the DC-DC power supply chip, resulting in an increase in devices, a decrease in performance stability and reliability, and a large cost and space occupancy.
An integrated transformer is designed to reduce the number of devices in the system by integrating the inverter unit, the battery pack unit, the transformer, the first rectifier unit and the second rectifier unit, and integrate the secondary output coil into the transformer.
By reducing the number of devices, the cost is reduced, and the energy transmission efficiency and overall system performance are improved, making the entire system more compact and space-saving.
Smart Images
Figure CN222802748U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of transformers and inverters, in particular to an integrated transformer and an inverter circuit thereof. Background Art
[0002] The inverter power supply contains multiple power components and multiple auxiliary power supplies. Usually, the design of the main power transformer is particularly important. The traditional main power transformer is separated from the resonant inductor, and the auxiliary power supply relies on the power chip. The increase in devices will increase the risk of performance stability and reliability degradation. With the development of the times, the cost pressure in the current inverter power supply is increasing, and the spatial size of the product is also limited.
[0003] Specifically, the transformer on the traditional inverter power supply solution only has the main winding and the high-voltage winding. The resonant inductor needs to be designed independently, and the auxiliary power supply needs to rely on the DC-DC power supply chip to achieve the functional requirements of the product. Both of these increase space and cost. In the event of overcurrent or fault, the resonant inductor will also fail due to saturation, reducing the reliability of the power supply and failing to complete the corresponding protection function. Utility Model Content
[0004] In view of the above problems, the present application provides an integrated transformer to reduce the number of components in an inverter unit.
[0005] To achieve the above objectives, the present application provides an integrated transformer, comprising:
[0006] Inverter unit;
[0007] A battery pack unit, the battery pack unit is electrically connected to the input end of the inverter unit, and the battery pack unit is used to supply energy to the inverter unit;
[0008] A transformer, wherein the output end of the inverter unit is electrically connected to a primary input end coil of the transformer;
[0009] a first rectifying unit, the first rectifying unit being electrically connected to a first secondary output terminal coil of the transformer;
[0010] A second rectifier unit is electrically connected to the second secondary output end coil of the transformer.
[0011] In the technical solution of the embodiment of the present application, the inverter unit includes: an inverter controller and a plurality of MOS tubes, the plurality of MOS tubes are interconnected, and the plurality of MOS tubes are electrically connected to the inverter controller through respective pins.
[0012] In the technical solution of the embodiment of the present application, the output end of the first rectifier unit is connected to the inverter controller.
[0013] In the technical solution of the embodiment of the present application, the first rectifier unit is a full-wave rectifier unit.
[0014] In the technical solution of the embodiment of the present application, the second rectifier unit is a full-wave rectifier unit.
[0015] In the technical solution of the embodiment of the present application, the transformer further includes: a magnetic core;
[0016] The primary input end coil, the first secondary output end coil and the second secondary output end coil are sleeved on the magnetic core.
[0017] In the technical solution of the embodiment of the present application, the turns ratio of the primary input end coil, the first secondary output end coil and the second secondary output end coil is 4:2:60.
[0018] In the technical solution of the embodiment of the present application, the primary input end coil, the second secondary output end coil and the first secondary output end coil are wound in sequence from bottom to top along the height of the magnetic core.
[0019] In the technical solution of the embodiment of the present application, an integrated transformer inverter circuit is applied to an integrated transformer described in any one of the embodiments;
[0020] It includes: an inverter unit, a battery unit, a transformer, a first rectifier unit, a second rectifier unit and a load device;
[0021] The battery pack unit is electrically connected to the input end of the inverter unit, the inverter unit is electrically connected to the fifth pin and the sixth pin of the transformer, the third pin and the fourth pin of the transformer are electrically connected to the first rectifier unit, and the first pin and the second pin of the transformer are electrically connected to the second rectifier unit;
[0022] The output end of the first rectifying unit is electrically connected to the inverter unit, and the output end of the second rectifying unit is electrically connected to the load device.
[0023] Different from the prior art, the above technical solution reduces the number of components in the system by integrating the secondary output coil into the transformer, thereby reducing the cost; at the same time, it makes energy transmission more efficient and improves the overall performance of the system. The integrated design makes the entire system more compact and saves space.
[0024] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Moreover, the same reference numerals are used throughout the drawings to represent the same components. In the drawings:
[0026] Figure 1 A circuit diagram of an integrated transformer described in a specific implementation manner;
[0027] Figure 2 A transformer circuit diagram for a specific implementation method;
[0028] Figure 3 A simplified structural diagram of an integrated transformer described in a specific implementation method;
[0029] Figure 4 A cross-sectional view of a transformer according to a specific implementation method;
[0030] Figure 5 This is a transformer structure diagram for a specific implementation method.
[0031] Description of reference numerals:
[0032] 10. Battery pack unit; 20. Inverter unit; 30. Transformer; 40. First rectifier unit; 50. Second rectifier unit;
[0033] 21. MOS tube;
[0034] 31. Primary input coil; 32. First and second output coils; 33. Second and second output coils; 34. Magnetic core. DETAILED DESCRIPTION
[0035] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.
[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.
[0037] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.
[0038] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.
[0039] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.
[0040] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).
[0041] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.
[0042] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.
[0043] See also Figures 1 to 5 , this embodiment provides a transformer 30 based on the inverter unit 20, including:
[0044] Inverter unit 20;
[0045] A battery pack unit 10, wherein the battery pack unit 10 is electrically connected to an input end of the inverter unit, and the battery pack unit 10 is used to supply energy to the inverter unit 20;
[0046] A transformer 30, wherein the output end of the inverter unit 20 is electrically connected to a primary input end coil 31 of the transformer 30;
[0047] A first rectifying unit 40, wherein the first rectifying unit 40 is electrically connected to the first secondary output end coil 32 of the transformer 30;
[0048] The second rectifying unit 50 is electrically connected to the second secondary output end coil 33 of the transformer 30 .
[0049] The inverter unit 20 is used to convert direct current (DC) into alternating current (AC). The inverter unit 20 receives direct current from the battery unit 10 and converts the direct current into alternating current suitable for input of the transformer 30 .
[0050] The battery pack unit 10 provides stable direct current to the inverter unit 20. The battery pack unit 10 is electrically connected to the input end of the inverter unit 20 to ensure that the inverter unit 20 can work continuously and stably.
[0051] The primary input coil 31 of the transformer 30 is electrically connected to the output end of the inverter unit 20 .
[0052] The first rectifier unit 40 is electrically connected to the first secondary output terminal coil 32 of the transformer 30. Its main function is to convert the AC power output by the transformer 30 into DC power for use by subsequent circuits. The second rectifier unit 50 is electrically connected to the second secondary output terminal coil 33 of the transformer 30, and the second rectifier unit 50 is used to convert AC power into DC power. The two rectifier units can supply power to different loads respectively as needed.
[0053] The battery pack unit 10 provides stable direct current to the inverter unit 20. The inverter unit 20 converts the direct current into high-frequency alternating current, and transmits the electric energy to the inside of the transformer 30 through the primary input end coil 31 of the transformer 30.
[0054] The primary input coil 31 is a resonant inductor and forms a resonant circuit. The function of the resonant inductor is to adjust the current and voltage in the circuit to achieve more efficient energy transmission and conversion.
[0055] The transformer 30 converts the electric energy of the primary input end into the electric energy of the first secondary output end through its internal coil structure. In this process, the second secondary output end generates additional electric energy to provide a stable power supply for the inverter unit 20 in the system.
[0056] The first rectifier unit 40 and the second rectifier unit 50 receive the AC power outputted by the first secondary output terminal coil 32 and the second secondary output terminal coil 33 of the transformer 30, respectively, and convert the output AC power into DC power. The DC power outputted by the second rectifier unit 50 can be used by other loads in the system, and the DC power outputted by the first rectifier unit 40 can be used by the inverter unit 20.
[0057] Different from the prior art, the above technical solution reduces the number of components in the system by integrating the secondary output coil into the transformer 30, thereby reducing the cost; at the same time, it makes energy transmission more efficient and improves the overall performance of the system. The integrated design makes the entire system more compact and saves space.
[0058] According to some embodiments of the present application, referring to Figure 1 The inverter unit 20 includes: an inverter controller and a plurality of MOS transistors 21 , the plurality of MOS transistors 21 are connected to each other, and the plurality of MOS transistors 21 are electrically connected to the inverter controller through respective pins.
[0059] The inverter unit 20 includes: the inverter controller and a plurality of MOS transistors 21. The inverter controller is used to control the switching states of the plurality of MOS transistors 21 to achieve conversion from direct current to alternating current. The plurality of MOS transistors 21 are interconnected to form a bridge circuit, which is electrically connected to the inverter controller through respective pins, receives the control signal of the inverter controller, and achieves switching action.
[0060] When the inverter controller receives the start signal, it controls the switch state of the MOS tube 21 according to the preset signal. When the MOS tube 21 is in the on state, the direct current of the battery unit 10 flows to the primary input end coil 31 of the transformer 30 through the MOS tube 21; when the MOS tube 21 is in the off state, the current of the battery unit 10 is blocked.
[0061] According to some embodiments of the present application, referring to Figure 1 and Figure 3, the output end of the first rectifier unit 40 is connected to the inverter controller.
[0062] The output end of the first rectifier unit 40 is connected to the inverter controller, so that the first rectifier unit 40 can supply energy to the inverter unit 20; at the same time, data such as voltage can be fed back to the inverter controller in real time to achieve stable control of the output voltage.
[0063] When the primary input end coil 31 of the transformer 30 receives the AC power output by the inverter unit 20, an induced voltage is generated on the first secondary output end coil 32 of the transformer 30. The first rectifier unit 40 rectifies the induced voltage on the first secondary output end coil 32 to obtain a DC voltage. The DC voltage supplies energy to the inverter controller through electrical connection, and at the same time feeds back data such as voltage. The inverter controller can adjust the signal according to the size of the fed-back DC voltage to achieve stable control of the output voltage.
[0064] According to some embodiments of the present application, the first rectifier unit 40 is a full-wave rectifier unit; the second rectifier unit 50 is a full-wave rectifier unit.
[0065] The first rectifier unit 40 and the second rectifier unit 50 are both full-wave rectifier units, which can fully rectify the AC voltage on the first and second secondary output coils of the transformer 30 into a DC voltage, thereby improving rectification efficiency and reducing energy loss.
[0066] According to some embodiments of the present application, referring to Figures 1 to 4 , the transformer 30 further includes: a magnetic core 34;
[0067] The primary input coil 31, the first secondary output coil 32 and the second secondary output coil 33 are sleeved on the magnetic core 34. The turns ratio of the primary input coil 31, the first secondary output coil 32 and the second secondary output coil 33 is 4:2:60. The primary input coil 31, the second secondary output coil 33 and the first secondary output coil 32 are wound in sequence from bottom to top along the height of the magnetic core 34.
[0068] The transformer 30 includes the magnetic core 34, the primary input coil 31, the first secondary output coil 32 and the second secondary output coil 33. The primary input coil 31, the first secondary output coil 32 and the second secondary output coil 33 are all sleeved on the magnetic core 34, and the energy transfer and conversion are realized through the magnetic field of the magnetic core 34. Among them, the turns ratio of the primary input coil 31, the first secondary output coil 32 and the second secondary output coil 33 is 4:2:60. The turns ratio of 4:2:60 enables the transformer 30 to obtain the required output voltage and current under the condition of constant input voltage. At the same time, the primary input coil 31, the second secondary output coil 33 and the first secondary output coil 32 are wound in sequence from bottom to top along the height of the magnetic core 34. Specifically, the primary input coil 31N1 is wound first, and then the second secondary output coil 33N2 is wound, the number of turns is greater than N1 and N2, and finally the first secondary output coil 32N3 is wound.
[0069] When the alternating current output by the inverter unit 20 passes through the primary input end coil 31, a magnetic field is generated in the magnetic core 34. This magnetic field is induced to the first secondary output end coil 32 and the second secondary output end coil 33 to generate an induced voltage. Since the turns ratio of the first secondary output end coil 32 and the second secondary output end coil 33 is different, the induced voltages generated on them are also different. The first rectifier unit 40 and the second rectifier unit 50 respectively rectify the two induced voltages to obtain the required DC voltage.
[0070] Specifically, the voltage (BAT) of the battery pack unit 10 is 24V, the voltage (V_BUS) of the second secondary output terminal coil 33 is 360V, and the voltage (AUX) of the second secondary output terminal coil is 12V.
[0071] According to some embodiments of the present application, referring to Figure 1 The output end of the second rectifying unit 50 is electrically connected to the load device to provide electrical energy to the load device; so that the direct current output by the second rectifying unit 50 can be directly supplied to the load device for use, thereby improving the energy utilization efficiency of the system.
[0072] When the second rectifying unit 50 rectifies the induced voltage on the second secondary output terminal coil 33 of the transformer 30, a DC voltage is obtained. The DC voltage is directly supplied to the load device for use. The load device can be various electronic devices that require a DC power supply.
[0073] See also Figure 1 , this embodiment provides an integrated transformer inverter circuit, which is applied to an integrated transformer described in any one of the embodiments;
[0074] It includes: an inverter unit, a battery unit, a transformer, a first rectifier unit, a second rectifier unit and a load device;
[0075] The battery pack unit is electrically connected to the input end of the inverter unit, the inverter unit is electrically connected to the fifth pin and the sixth pin of the transformer, the third pin and the fourth pin of the transformer are electrically connected to the first rectifier unit, and the first pin and the second pin of the transformer are electrically connected to the second rectifier unit;
[0076] The output end of the first rectifying unit is electrically connected to the inverter unit, and the output end of the second rectifying unit is electrically connected to the load device.
[0077] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.
Claims
1. An integrated transformer, characterized in that: include: Inverter unit; A battery pack unit, the battery pack unit is electrically connected to the input end of the inverter unit, and the battery pack unit is used to supply energy to the inverter unit; A transformer, wherein the output end of the inverter unit is electrically connected to a primary input end coil of the transformer; a first rectifying unit, the first rectifying unit being electrically connected to a first secondary output terminal coil of the transformer; A second rectifier unit is electrically connected to the second secondary output end coil of the transformer.
2. The integrated transformer according to claim 1, characterized in that: The inverter unit includes: an inverter controller and a plurality of MOS tubes, the plurality of MOS tubes are connected to each other, and the plurality of MOS tubes are electrically connected to the inverter controller through respective pins.
3. The integrated transformer according to claim 2, characterized in that: The output end of the first rectifying unit is connected to the inverter controller.
4. The integrated transformer according to claim 1, characterized in that: The first rectifying unit is a full-wave rectifying unit.
5. The integrated transformer according to claim 1, characterized in that: The second rectifying unit is a full-wave rectifying unit.
6. The integrated transformer according to claim 1, characterized in that: The transformer further comprises: a magnetic core; The primary input end coil, the first secondary output end coil and the second secondary output end coil are sleeved on the magnetic core.
7. The integrated transformer according to claim 6, characterized in that: The turns ratio of the primary input end coil, the first secondary output end coil and the second secondary output end coil is 4:2:
60.
8. The integrated transformer according to claim 6, characterized in that: The primary input end coil, the second secondary output end coil and the first secondary output end coil are wound in sequence from bottom to top along the height of the magnetic core.
9. The integrated transformer according to claim 1, characterized in that: The output end of the second rectifying unit is electrically connected to a load device to provide electrical energy to the load device.
10. An integrated transformer inverter circuit, characterized in that: Applicable to an integrated transformer as claimed in any one of claims 1 to 9; It includes: an inverter unit, a battery unit, a transformer, a first rectifier unit, a second rectifier unit and a load device; The battery pack unit is electrically connected to the input end of the inverter unit, the inverter unit is electrically connected to the fifth pin and the sixth pin of the transformer, the third pin and the fourth pin of the transformer are electrically connected to the first rectifier unit, and the first pin and the second pin of the transformer are electrically connected to the second rectifier unit; The output end of the first rectifying unit is electrically connected to the inverter unit, and the output end of the second rectifying unit is electrically connected to the load device.