Power converter compatible with different voltage platforms, vehicle-mounted charger and vehicle
By integrating the transformer and adapter board design, the compatibility problem of the transformer under different voltage platforms is solved, automated winding and miniaturization are achieved, costs are reduced and the flexibility of circuit layout design is improved.
Patent Information
- Application Number
- CN202422879783.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-25
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2034-11-25
AI Technical Summary
Existing transformer optimization schemes increase transformer size and are difficult to automate winding, and cannot accommodate the voltage differences between 400V and 800V high-voltage battery platforms.
It adopts an integrated transformer and adapter board design, and realizes the series or parallel connection of windings through primary and secondary adapter wires. The winding connection method is adjusted according to the preset output voltage, supports automated winding and is compatible with different voltage platforms.
It achieves transformer compatibility across different voltage platforms, avoids increasing transformer size, supports automated winding, reduces product costs, and improves the flexibility of circuit layout design.
Smart Images
Figure CN223502750U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of transformer technology, and more particularly to power converters, on-board chargers and vehicles compatible with different voltage platforms. Background Technology
[0002] With the continuous development and improvement of electric vehicle performance, there are two types of models on the market with ordinary 400V and high-performance 800V high-voltage battery platforms. In order to be compatible with 400V and 800V high-voltage battery charging, the transformer design in the high-voltage DC / DC converter in the OBC (Onboard Charger) (especially the ratio of its primary / secondary windings and the winding method) needs to be optimized to make it compatible with both 400V and 800V output voltages.
[0003] One approach in related technologies is to optimize the turns ratio of the transformer secondary winding, which adds extra winding space to the transformer body for series and parallel connections between the various winding coils. This approach increases the size of the transformer and makes it difficult to automate the winding process. Utility Model Content
[0004] The main objective of this application is to provide a power converter, on-board charger, and vehicle compatible with different voltage platforms, aiming to at least solve the technical problem of how to make the transformer compatible with different voltage platforms, avoid increasing the transformer size, and support automated winding.
[0005] To achieve the above objectives, this application provides a power converter compatible with different voltage platforms, the power converter being compatible with different voltage platforms comprising: a main power board, an integrated transformer, and an adapter board;
[0006] The integrated transformer includes a base and a first primary winding, a second primary winding, a first secondary winding, and a second secondary winding respectively wound on different magnetic pillars. The first primary winding, the second primary winding, the first secondary winding, and the second secondary winding are respectively fixedly connected to the base.
[0007] The adapter board includes a primary-side adapter wire and a secondary-side adapter wire. The primary-side adapter wire electrically connects the first primary winding and the second primary winding to the main power board, respectively. The primary-side adapter wire also connects the first primary winding and the second primary winding in series. The secondary-side adapter wire electrically connects the first secondary winding and the second secondary winding to the main power board, respectively. The secondary-side adapter wire also connects the first secondary winding and the second secondary winding in series or in parallel according to the preset output voltage of the integrated transformer.
[0008] In one embodiment, when the preset output voltage of the integrated transformer is 400V, the secondary winding connector connects the first secondary winding and the second secondary winding in parallel.
[0009] In one embodiment, when the preset output voltage of the integrated transformer is 800V, the secondary winding connector connects the first secondary winding and the second secondary winding in series.
[0010] In one embodiment, the main power board includes a first primary-side power connection point, a second primary-side power connection point, a first secondary-side power connection point, and a second secondary-side power connection point;
[0011] The first primary winding includes a first pin and a second pin, the second primary winding includes a third pin and a fourth pin, the first secondary winding includes a fifth pin and a sixth pin, and the second secondary winding includes a seventh pin and an eighth pin.
[0012] The primary-side adapter wires are respectively electrically connected to the first primary-side power connection point and the first pin, the second primary-side power connection point and the fourth pin, and the second pin and the third pin;
[0013] The secondary side adapter cable is electrically connected to the first secondary side power connection point and the fifth pin, and the second secondary side power connection point and the eighth pin, respectively;
[0014] The secondary adapter wire is electrically connected to the sixth pin and the seventh pin, or the secondary adapter wire is electrically connected to the fifth pin and the seventh pin, and the sixth pin and the eighth pin, respectively.
[0015] In one embodiment, when the preset output voltage of the integrated transformer is 400V, the secondary adapter wire is electrically connected to the fifth pin and the seventh pin, the sixth pin and the eighth pin, respectively.
[0016] In one embodiment, when the preset output voltage of the integrated transformer is 800V, the secondary adapter wire is electrically connected to the sixth pin and the seventh pin.
[0017] In one embodiment, the power converter compatible with different voltage platforms further includes:
[0018] A first shielding layer is embedded in the base.
[0019] In one embodiment, the power converter compatible with different voltage platforms further includes:
[0020] The second shielding layer is disposed in the adapter plate.
[0021] In addition, to achieve the above objectives, this application also provides an on-board charger, which includes a power converter compatible with different voltage platforms as described above.
[0022] In addition, to achieve the above objectives, this application also provides a vehicle that includes the on-board charger described above.
[0023] This application proposes a power converter, on-board charger, and vehicle compatible with different voltage platforms, overcoming the shortcomings of related technologies where transformer optimization schemes increase transformer size and are difficult to automate winding. The power converter compatible with different voltage platforms includes: a main power board, an integrated transformer, and an adapter board. The integrated transformer includes a base and a first primary winding, a second primary winding, a first secondary winding, and a second secondary winding wound on different magnetic pillars. The first primary winding, the second primary winding, the first secondary winding, and the second secondary winding are fixedly connected to the base. The adapter board includes a primary adapter wire and a secondary adapter wire. The primary adapter wire electrically connects the first and second primary windings to the main power board, and also connects the first and second primary windings in series. The secondary adapter wire electrically connects the first and second secondary windings to the main power board, and also connects the first and second secondary windings in series or in parallel according to the preset output voltage of the integrated transformer. In the power converter compatible with different voltage platforms provided in this application, the windings of the integrated transformer are independent of each other. By adding an adapter board, the electrical connection between the main power board and the integrated transformer, as well as the electrical connection between some windings of the integrated transformer, are realized. In this way, even if it is applied to different voltage platforms, there is no need to change the winding structure of the integrated transformer. Only by replacing the adapter board with a different wiring method can the connection method between the secondary windings of the integrated transformer be changed. Thus, the transformer can be compatible with different voltage platforms without increasing the size of the transformer. The transformer also supports automated winding. Attached Figure Description
[0024] To more clearly illustrate the technical solutions in the embodiments of this application or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.
[0025] Figure 1 A schematic diagram of a module structure for a power converter compatible with different voltage platforms, provided for an embodiment of this application;
[0026] Figure 2A circuit diagram of a high-voltage DC / DC topology involved in a power converter compatible with different voltage platforms, provided for an embodiment of this application;
[0027] Figure 3 for Figure 2 A schematic diagram illustrating the equivalent principle of a medium-sized integrated transformer;
[0028] Figure 4 for Figure 3 A schematic diagram of the winding connection of a medium-sized integrated transformer;
[0029] Figure 5 for Figure 3 A schematic diagram of another winding connection for a centrally integrated transformer;
[0030] Figure 6 A schematic diagram of the layout structure of a power converter compatible with different voltage platforms provided in an embodiment of this application;
[0031] Figure 7 A wiring diagram of an adapter board for a power converter compatible with different voltage platforms provided in this application embodiment;
[0032] Figure 8 A wiring diagram of another adapter board involved in a power converter compatible with different voltage platforms provided in an embodiment of this application;
[0033] Figure 9 A schematic diagram of another layout structure of a power converter compatible with different voltage platforms provided for an embodiment of this application;
[0034] Figure 10 This is a schematic diagram of the layout structure of another power converter compatible with different voltage platforms provided in the embodiments of this application.
[0035] Explanation of icon numbers:
[0036] 10. Main power board; 20. Integrated transformer; 30. Adapter board; P1. First primary winding; P2. Second primary winding; S1. First secondary winding; S2. Second secondary winding; Q1 to Q4. Primary full-bridge switching transistors; C1. Primary DC blocking capacitor; T. Integrated transformer; Lr. Equivalent leakage inductance; Lm. Equivalent magnetizing inductance; n:1. Primary-secondary turns ratio; C2. Secondary DC blocking capacitor; Q5 to Q8. Secondary full-bridge switching transistors; Pri. Primary / Primary side; Sec. Secondary / Secondary side; A. First primary power connection point; B. Second primary power connection point; C. First secondary power connection point; D. Second secondary power connection point; 1. First pin; 2. Second pin; 3. Third pin; 4. Fourth pin; 5. Fifth pin; 6. Sixth pin; 7. Seventh pin; 8. Eighth pin.
[0037] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0038] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.
[0039] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.
[0040] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B.
[0041] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0042] It should also be understood that references to "one embodiment" or "some embodiments" in the specification of embodiments of this application mean that one or more embodiments of this application include the specific features, structures, or characteristics described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof all mean "including but not limited to," unless otherwise specifically emphasized.
[0043] With the continuous development and improvement of electric vehicle performance, there are two types of models on the market: the standard 400V version and the high-performance 800V high-voltage battery platform. In order to match the different voltage levels of the models, OBC (On Board Charger) manufacturers need to optimize the key magnetic component in the high-voltage DC / DC (direct current to direct current conversion) circuit of the OBC, namely the transformer (especially the ratio of its primary / secondary windings and the winding method), to adapt to different output voltage ranges (400V and 800V output voltage). The most critical optimization indicator is the turns ratio between the primary and secondary sides of the transformer.
[0044] When the output power level remains the same but the output voltage doubles, the output current on the secondary side of the transformer will be halved. Therefore, for a transformer, when the platform voltage increases from 400V to 800V, the simplest and most effective optimization solution is to change the parallel connection of the secondary winding of the transformer under the original 400V platform to a series connection, thereby increasing the number of turns on the secondary side. That is, adjusting the original primary-secondary winding turns ratio from 2:1 to 1:1 to improve the output voltage range. This requires the magnetic component manufacturer to rewind the secondary winding connection sequence to adapt to this turns ratio adjustment requirement. Therefore, for transformers, magnetic component manufacturers often need to produce two different models to match different voltage levels.
[0045] However, in order to increase the output voltage of the platform from 400V to 800V, the magnetic component manufacturers need to optimize the turns ratio of the transformer secondary winding. This will add extra winding space to the transformer body for series and parallel connections between the coils of each winding. The extra winding space will increase the size of the transformer, and the primary and secondary windings need to be cross-connected, making it difficult to achieve automated winding. It will also produce two different specifications of magnetic components, which is not conducive to product control.
[0046] Based on this, this application proposes a power converter, on-board charger, and vehicle compatible with different voltage platforms, overcoming the shortcomings of related technologies where transformer optimization schemes increase transformer size and are difficult to automate winding. In the power converter compatible with different voltage platforms provided in this application, the windings of the integrated transformer are independent of each other. By adding an adapter board, the electrical connection between the main power board and the integrated transformer, as well as the electrical connection between some windings of the integrated transformer, are achieved. In this way, even when applied to different voltage platforms, there is no need to change the winding structure of the integrated transformer. Only by replacing the adapter board with one that uses a different wiring method can the connection method between the secondary windings of the integrated transformer be changed. Thus, the transformer can be compatible with different voltage platforms without increasing the transformer size, and the transformer also supports automated winding.
[0047] The power converter, on-board charger, and vehicle compatible with different voltage platforms provided in this application are specifically described through the following embodiments. First, the power converter compatible with different voltage platforms is described.
[0048] This application provides a power converter compatible with different voltage platforms, referring to... Figure 1 , Figure 1 This application provides a schematic diagram of a module structure for a power converter compatible with different voltage platforms. The power converter includes a main power board 10, an integrated transformer 20, and an adapter board 30.
[0049] The integrated transformer 20 includes a base and a first primary winding P1, a second primary winding P2, a first secondary winding S1 and a second secondary winding S2 respectively wound on different magnetic pillars. The first primary winding P1, the second primary winding P2, the first secondary winding S1 and the second secondary winding S2 are respectively fixedly connected to the base.
[0050] The adapter board 30 includes a primary-side adapter wire and a secondary-side adapter wire. The primary-side adapter wire electrically connects the first primary winding P1 and the second primary winding P2 to the main power board 10, respectively. The primary-side adapter wire also connects the first primary winding P1 and the second primary winding P2 in series. The secondary-side adapter wire electrically connects the first secondary winding S1 and the second secondary winding S2 to the main power board 10, respectively. The secondary-side adapter wire also connects the first secondary winding S1 and the second secondary winding S2 in series or in parallel according to the preset output voltage of the integrated transformer 20.
[0051] As an example, in this embodiment, the power converter compatible with different voltage platforms can be a high-voltage DC / DC converter in an OBC, referencing... Figure 2 , Figure 2This is a basic high-voltage DC / DC topology. The topology mainly includes primary-side full-bridge switches Q1 to Q4, primary-side DC blocking capacitor C1, a four-port isolation transformer T (where A to D are the power connection points between the transformer and the primary / secondary sides, Lr is the equivalent leakage inductance of the transformer, Lm is the equivalent magnetizing inductance, and the primary / secondary turns ratio is n:1), secondary-side DC blocking capacitor C2, secondary-side full-bridge switches Q5 to Q8 (both primary and secondary switches can be MOSFETs, Metal-Oxide-Semiconductor Field-Effect Transistors), output-side HVDC EMC filter capacitors, and a 400V or 800V high-voltage battery at the output. The equivalent circuit diagram of the integrated transformer T in this topology is shown below. Figure 3 As shown, the primary and secondary coils are each wound in two groups on the magnetic core. Pri (Primary) represents the transformer's input terminal, and Sec (Second) represents the transformer's output terminal. The traditional winding method for 400V and 800V transformers is as follows: Connect pins 2 to 3 on the primary side, with pins 1 and 4 as primary outputs; connect pins 5 to 7 and 6 to 8 on the secondary side, with pins 5 and 8 as secondary outputs. This constitutes a 400V transformer with a primary-to-secondary turns ratio of 2:1. Figure 4 As shown; connecting pins 2 to 3 on the primary side, with pins 1 and 4 as primary side outputs, and connecting pins 6 to 7 on the secondary side, with pins 5 and 8 as secondary side outputs, constitutes a transformer with a primary-to-secondary turns ratio of 1:1 and a rated capacity of 800V. Figure 5 As shown. It is understandable that, with the same output power, the output current is halved when the voltage is doubled. Therefore, the series / parallel connection of the secondary coils can meet the current requirements under their respective voltages. However, since the above series / parallel operation is required, additional winding height and width space are needed, which will lead to a larger overall size of the integrated transformer. Moreover, the complex wiring in space is not conducive to automation.
[0052] To overcome the aforementioned shortcomings, in this embodiment, the first primary winding P1, the second primary winding P2, the first secondary winding S1, and the second secondary winding S2 of the integrated transformer 20 can be automatically wound onto four magnetic pillars. The winding pins of each winding are connected and fixed to the base. Without introducing the adapter plate 30, the windings of the integrated transformer 20 are independent of each other; that is, there is no electrical connection between the pins of different windings. Therefore, magnetic component manufacturers do not need to produce different models of transformers for different voltage platforms, and thus do not need to wind them in a specific manner. In other words, the integrated transformer 20 can support automated winding. This embodiment can be combined with… Figure 1 and Figure 6 To understand, Figure 6 This is a schematic diagram of the layout structure of a power converter compatible with different voltage platforms provided in this embodiment. Figure 1 The main power board 10 and the adapter board 30 can respectively correspond to Figure 6 The main power PCB and winding pin adapter PCB are connected to the integrated transformer 20 and the top main board through four power connection hardware A to D on the winding pin adapter PCB. The four power connection pins can be flexibly adjusted according to the power layout of the main board, which greatly increases the flexibility of circuit layout design.
[0053] It is understood that in this embodiment, the integrated transformer 20 has different output voltage requirements for different voltage platforms. That is, the preset output voltage is different for different voltage platforms. For example, the preset output voltages for the ordinary 400V and the high-performance 800V high-voltage battery platforms can be 400V and 800V, respectively.
[0054] In this embodiment, the primary edge connecting line includes Figure 1 The thick dashed line portion within the intermediate connection board 30 not only electrically connects the first primary winding P1 and the second primary winding P2 to the main power board 10 respectively, but also connects the first primary winding P1 and the second primary winding P2 in series. This allows the primary and secondary winding turns ratio to be adjusted simply by changing the connection method of the secondary winding, thus ensuring compatibility with different voltage platforms. The secondary connection wires include... Figure 1 The thick solid line portion within the intermediate transfer plate 30 electrically connects the first secondary winding S1 and the second secondary winding S2 to the main power board 10, respectively. Figure 1 The secondary winding connection lines not shown need to be discussed in two cases: one is to connect the first secondary winding S1 and the second secondary winding S2 in series, and the other is to connect the first secondary winding S1 and the second secondary winding S2 in parallel.
[0055] As an example, when the preset output voltage of the integrated transformer 20 is 400V, the secondary winding connector connects the first secondary winding S1 and the second secondary winding S2 in parallel.
[0056] As an example, with the preset output voltage of the integrated transformer 20 being 800V, the secondary winding connector connects the first secondary winding S1 and the second secondary winding S2 in series.
[0057] Reference Figure 7 and Figure 8 In some feasible embodiments, the main power board 10 includes a first primary power connection point A, a second primary power connection point B, a first secondary power connection point C, and a second secondary power connection point D.
[0058] The first primary winding P1 includes a first pin 1 and a second pin 2, the second primary winding P2 includes a third pin 3 and a fourth pin 4, the first secondary winding S1 includes a fifth pin 5 and a sixth pin 6, and the second secondary winding S2 includes a seventh pin 7 and an eighth pin 8.
[0059] The primary side adapter wires are electrically connected to the first primary side power connection point A and the first pin 1, the second primary side power connection point B and the fourth pin 4, the second pin 2 and the third pin 3, respectively.
[0060] The secondary side adapter cable is electrically connected to the first secondary side power connection point C and the fifth pin 5, and the second secondary side power connection point D and the eighth pin 8, respectively.
[0061] The secondary adapter cable is electrically connected to pin 6 and pin 7, or the secondary adapter cable is electrically connected to pin 5 and pin 7, and pin 6 and pin 8, respectively.
[0062] In this embodiment, to avoid misunderstandings that may result from the crossover between the primary and secondary adapter cables, the following measures are taken: Figure 1 The process involved disassembly and refinement, and then, based on the two scenarios of connecting the first secondary winding S1 and the second secondary winding S2 in series or in parallel using the secondary winding adapter, the following results were obtained: Figure 7 and Figure 8 Wiring diagrams for the two types of adapter boards 30 shown.
[0063] As an example, such as Figure 7 The diagram shown is the wiring diagram of the adapter board 30 that supports 400V. It can be understood that when the preset output voltage of the integrated transformer 20 is 400V, the secondary adapter wires are electrically connected to the fifth pin 5 and the seventh pin 7, the sixth pin 6 and the eighth pin 8, respectively.
[0064] As an example, such as Figure 8 The diagram shown is the wiring diagram of the adapter board 30 that supports 800V. It can be understood that when the preset output voltage of the integrated transformer 20 is 800V, the secondary adapter wire is electrically connected to the sixth pin 6 and the seventh pin 7.
[0065] Reference Figure 9 In some feasible embodiments, the power converter compatible with different voltage platforms described above may further include: a first shielding layer, which is embedded in the base.
[0066] It is understandable that, from a layout perspective, this embodiment... Figure 6 A first shielding layer is added on the basis of the previous one. As an example, the first shielding layer in this embodiment can be a metal shielding layer.
[0067] It should be noted that while integrated leakage inductance transformers offer advantages in size and cost during the trend of product miniaturization, the presence of integrated leakage inductance creates significant magnetic field interference between the integrated transformer 20 and the main power board 10. This negatively impacts the stability of the signal circuits above the integrated transformer 20, typically requiring additional shielding measures to reduce interference from the leakage magnetic field. In other words, while integrated transformers reduce the overall transformer size, the impact of leakage magnetic field on the signal control circuits necessitates the addition of an additional metal shield to protect against the leakage magnetic field. This shield also increases the overall height and requires additional heat dissipation design, hindering miniaturization.
[0068] To overcome the above problems, this embodiment embeds a metal shielding layer in the middle of the base, so that the base not only achieves the function of fixing the winding lead (winding support), but also achieves the effect of leakage magnetic shielding. In addition, the base can be folded to support the embedding of the shielding layer and the transformer together in the water-cooling cavity, so as to achieve better contact between the shielding layer and the cooling system, thereby removing the heat generated on the shielding layer due to the leakage magnetic field.
[0069] Reference Figure 10 In some feasible embodiments, the power converter compatible with different voltage platforms described above may further include a second shielding layer disposed in the adapter plate 30.
[0070] It is understandable that, from a layout perspective, this embodiment... Figure 9 A second shielding layer is added on top of the existing one. As an example, the second shielding layer in this embodiment can be a fully covered copper network.
[0071] Based on the above embodiments, an additional layer of fully covered copper mesh can be added to the winding pin-to-PCB as a secondary shield to further reduce the interference of the leakage magnetic field of the integrated inductor on the top main power board 10.
[0072] This embodiment provides a power converter compatible with different voltage platforms. By adding an adapter board, the electrical connection between the main power board and the integrated transformer, as well as the electrical connection between some windings of the integrated transformer, are achieved. In this way, even when applied to different voltage platforms, there is no need to change the winding structure of the integrated transformer. Only the connection method between the secondary windings of the integrated transformer needs to be changed by replacing the adapter board with one that uses a different wiring method. This makes the transformer compatible with different voltage platforms without increasing the transformer size. The transformer also supports automated winding, thus achieving miniaturization of the transformer size, automated winding, and material standardization for different voltage platforms. Furthermore, by adding a shielding layer, the integrated transformer is shielded from the signal circuit above, reducing leakage magnetic field interference. This optimizes the power density and cost of the product. Material standardization will also further reduce product costs and improve the quality control of the magnetic component transformer.
[0073] Furthermore, this application also provides an on-board charger, which includes the power converter compatible with different voltage platforms provided in the above embodiments.
[0074] Since the on-board charger proposed in this embodiment includes the power converter compatible with different voltage platforms proposed in the above embodiments, it has the beneficial effects of the above embodiments. For details on the specific working process and principle of the power converter compatible with different voltage platforms, please refer to the power converter compatible with different voltage platforms provided in the above embodiments. It will not be repeated here, and all are within the protection scope of this embodiment.
[0075] In addition, this application also provides a vehicle that includes the on-board charger provided in the above embodiments.
[0076] Since the on-board charger proposed in this embodiment includes the on-board charger proposed in the above embodiments, it has the beneficial effects of the above embodiments. For details on the specific working process and principle of the power converter compatible with different voltage platforms in the on-board charger, please refer to the power converter compatible with different voltage platforms provided in the above embodiments. They will not be described in detail here, and all are within the protection scope of this embodiment.
[0077] It should be noted that the technical solutions of the various embodiments of this application can be combined with each other, but only if they are implemented by those skilled in the art. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this application.
[0078] The above are merely optional embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.
Claims
1. A power converter compatible with different voltage platforms, characterized in that, The power converter compatible with different voltage platforms includes: a main power board, an integrated transformer, and an adapter board; The integrated transformer includes a base and a first primary winding, a second primary winding, a first secondary winding, and a second secondary winding respectively wound on different magnetic pillars. The first primary winding, the second primary winding, the first secondary winding, and the second secondary winding are respectively fixedly connected to the base. The adapter board includes a primary-side adapter wire and a secondary-side adapter wire. The primary-side adapter wire electrically connects the first primary winding and the second primary winding to the main power board, respectively. The primary-side adapter wire also connects the first primary winding and the second primary winding in series. The secondary-side adapter wire electrically connects the first secondary winding and the second secondary winding to the main power board, respectively. The secondary-side adapter wire also connects the first secondary winding and the second secondary winding in series or in parallel according to the preset output voltage of the integrated transformer.
2. The power converter compatible with different voltage platforms as described in claim 1, characterized in that, When the preset output voltage of the integrated transformer is 400V, the secondary winding connector connects the first secondary winding and the second secondary winding in parallel.
3. The power converter compatible with different voltage platforms as described in claim 1, characterized in that, When the preset output voltage of the integrated transformer is 800V, the secondary winding connector connects the first secondary winding and the second secondary winding in series.
4. The power converter compatible with different voltage platforms as described in claim 1, characterized in that, The main power board includes a first primary-side power connection point, a second primary-side power connection point, a first secondary-side power connection point, and a second secondary-side power connection point. The first primary winding includes a first pin and a second pin, the second primary winding includes a third pin and a fourth pin, the first secondary winding includes a fifth pin and a sixth pin, and the second secondary winding includes a seventh pin and an eighth pin. The primary-side adapter wires are respectively electrically connected to the first primary-side power connection point and the first pin, the second primary-side power connection point and the fourth pin, and the second pin and the third pin; The secondary side adapter cable is electrically connected to the first secondary side power connection point and the fifth pin, and the second secondary side power connection point and the eighth pin, respectively; The secondary adapter wire is electrically connected to the sixth pin and the seventh pin, or the secondary adapter wire is electrically connected to the fifth pin and the seventh pin, and the sixth pin and the eighth pin, respectively.
5. The power converter compatible with different voltage platforms as described in claim 4, characterized in that, When the preset output voltage of the integrated transformer is 400V, the secondary adapter wire is electrically connected to the fifth pin and the seventh pin, the sixth pin and the eighth pin respectively.
6. The power converter compatible with different voltage platforms as described in claim 4, characterized in that, When the preset output voltage of the integrated transformer is 800V, the secondary adapter wire is electrically connected to the sixth pin and the seventh pin.
7. The power converter compatible with different voltage platforms as described in any one of claims 1 to 6, characterized in that, The power converter compatible with different voltage platforms also includes: A first shielding layer is embedded in the base.
8. The power converter compatible with different voltage platforms as described in claim 7, characterized in that, The power converter compatible with different voltage platforms also includes: The second shielding layer is disposed in the adapter plate.
9. An on-board charger, characterized in that, The on-board charger includes a power converter compatible with different voltage platforms as described in any one of claims 1 to 8.
10. A vehicle, characterized in that, The vehicle includes the on-board charger as described in claim 9.