Vehicle-mounted charging device and vehicle

Abstract

The application provides a vehicle-mounted charging device and a vehicle. The vehicle-mounted charging device comprises a wired charging unit, a wireless charging unit, a control unit and a power unit, the power unit comprises a filtering subunit; the control unit is connected with the wired charging unit, the wireless charging unit and the power unit respectively; the wired charging unit and the wireless charging unit are used for obtaining a charging current; the control unit is used for controlling the wired charging unit or the wireless charging unit to charge a battery through the power unit; and the filtering subunit is used for filtering the current obtained by the power unit. By sharing one power unit and one control unit by the wired charging unit and the wireless charging unit, the cost, the volume and the weight of automobile components can be reduced, and the automobile space layout can be optimized.

Description

Technical Field

[0001] This application relates to the field of automotive technology, and more particularly to an on-board charging device and a vehicle. Background Technology

[0002] With the development of intelligent technology, wireless charging devices for cars are gradually appearing in more and more models. Generally, it is necessary to install both wireless and wired charging devices in a car. Currently, due to the cost of wireless charging products, and the large size and weight of both wireless and wired chargers, which leads to complex internal structures and unreasonable space layouts in cars, wireless charging is difficult to popularize quickly. Summary of the Invention

[0003] This application provides an on-board charging device and a vehicle, which aims to reduce the cost, size and weight of automotive components and optimize the vehicle's spatial layout by enabling the wired charging unit and the wireless charging unit to share a power unit and a control unit.

[0004] In a first aspect, embodiments of this application provide an on-board charging device, including a wired charging unit, a wireless charging unit, a control unit, and a power unit, wherein the power unit includes a filter subunit;

[0005] The control unit is connected to the wired charging unit, the wireless charging unit, and the power unit, respectively.

[0006] The wired charging unit and the wireless charging unit are used to acquire charging current. The control unit is used to control the wired charging unit or the wireless charging unit to charge the battery through the power unit. The filtering unit is used to filter the current acquired by the power unit.

[0007] As can be seen, by enabling the wired charging unit and the wireless charging unit to share a single control unit, the wired charging unit and the wireless charging unit can be filtered through the same filtering subunit, which can reduce the cost, size and weight of automotive components and optimize the automotive space layout.

[0008] Furthermore, the filtering subunit includes multiple filtering modules; the multiple filtering modules are connected in parallel, and each of the multiple filtering modules is used to filter the current acquired by the power unit.

[0009] As can be seen, by using multiple filtering units to simultaneously filter the wired or wireless charging unit in this application, not only can the filtering requirements of the on-board charging device be met, but the charging efficiency can also be improved.

[0010] Furthermore, the control unit includes a first switch subunit, a second switch subunit, and a control subunit; the first switch subunit is connected to the wired charging unit and the power unit, and is used to control the connection relationship between the wired charging unit and the power unit; the second switch subunit is connected to the wireless charging unit and the power unit, and is used to control the connection relationship between the wireless charging unit and the power unit; the control subunit is connected to the first switch subunit and the second switch subunit, and is used to acquire detection signals and control the switching states of the first switch subunit and the second switch subunit according to the detection signals.

[0011] As can be seen, this application enables switching between wired charging mode and wireless charging mode through the control subunit, the first switch subunit, and the second switch subunit, providing users with multiple charging options to meet their needs.

[0012] Furthermore, the control subunit controls the switching states of the first switch subunit and the second switch subunit according to the detection signal, including: obtaining the currently available charging mode according to the detection signal, the charging mode including a wired charging mode or a wireless charging mode; when the currently available charging mode includes a wireless charging mode, controlling the switching state of the first switch subunit to be open and the switching state of the second switch subunit to be closed.

[0013] Furthermore, in the case where both the first switching unit and the second switching unit include transistor switches, the detection signal includes a pulse width modulation (PWM) signal.

[0014] As can be seen, by controlling the switching state of the transistor switches in the first and second switching units using PWM signals in this application, the circuit stability of the on-board charging device can be improved.

[0015] Furthermore, the power unit also includes a sampling subunit for acquiring sampled values; the control subunit is connected to the sampling subunit and is used to generate a control signal based on the sampled values, and control the on-board charging device to charge the battery based on the control signal.

[0016] As can be seen, by using the same sampling unit for both the wired and wireless charging units in this application, not only can the current charging status be controlled in real time, but the cost, size, and weight of automotive components can also be reduced, and the spatial layout of the vehicle can be optimized.

[0017] Furthermore, the sampling subunit includes a current sampling module and / or a voltage sampling module, wherein the current sampling module is used to acquire current sampling values ​​and the voltage sampling module is used to acquire voltage sampling values.

[0018] As can be seen, the sampling method in this application, which involves sampling voltage and / or current values, is not only simple but also allows for the rapid generation of control signals.

[0019] Furthermore, the plurality of filter subunits each include a capacitor module and / or an inductor module.

[0020] As can be seen, the filtering using capacitor modules and / or inductor modules in this application not only meets the filtering requirements of on-board charging devices, but also has a simple structure.

[0021] Furthermore, the power unit also includes a rectifier subunit; the rectifier subunit is connected to the filter subunit and is used to rectify the current acquired by the power unit.

[0022] As can be seen, the wired charging unit and the wireless charging unit in this application share the same rectifier sub-unit, which can reduce the cost, size and weight of automotive components and optimize the spatial layout of the vehicle.

[0023] Secondly, embodiments of this application provide a vehicle that includes the on-board charging device described in any possible implementation of the first aspect above. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art 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 these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of an on-board charging device provided in an embodiment of this application;

[0026] Figure 2 This is a schematic diagram of the structure of a filter subunit provided in an embodiment of this application;

[0027] Figure 3 This is a schematic diagram of the structure of the control unit provided in the embodiment of this application;

[0028] Figure 4 This is a schematic diagram of the power unit provided in the embodiments of this application;

[0029] Figure 5 This is a circuit diagram of an on-board charging device provided in an embodiment of this application;

[0030] Figure 6 This is a schematic diagram of another power unit structure provided in an embodiment of this application;

[0031] Figure 7 This is a schematic diagram of the structure of a vehicle provided in an embodiment of this application. Detailed Implementation

[0032] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0033] The following sections will provide detailed explanations.

[0034] The terms "first," "second," "third," and "fourth," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.

[0035] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0036] The technical solutions in this application will now be described with reference to the accompanying drawings.

[0037] Please see Figure 1 , Figure 1 This is a schematic diagram of the structure of an on-board charging device provided in an embodiment of this application. Figure 1As shown, the on-board charging device 10 includes: a wired charging unit 11, a wireless charging unit 12, a control unit 13, and a power unit 14. The power unit 14 includes a filtering subunit 141. The control unit 13 is connected to the wired charging unit 11, the wireless charging unit 12, and the power unit 14. The wired charging unit 11 and the wireless charging unit 12 are used to acquire charging current. The control unit 13 is used to control the wired charging unit 11 or the wireless charging unit 12 to charge the battery through the power unit 14. The filtering subunit 141 is used to filter the current acquired by the power unit 14.

[0038] The wired charging unit may include a wired charger, and the wireless charging unit may include a wireless charger. Alternatively, both the wired charging unit and the wireless charging unit may include an on-board receiving coil. The power unit processes the current received by the wired charging unit or the wireless charging unit. When charging the vehicle's power battery, the control unit can determine the charging mode and switch the current charging mode. The power module can determine whether to process the current from the wired charging module or the wireless charging module based on the current charging mode.

[0039] As can be seen, this application reduces the cost, size, and weight of automotive components and optimizes the automotive space layout by enabling the wired charging unit and the wireless charging unit to share a control unit and by enabling the wired charging unit and the wireless charging unit to be filtered through the same filtering subunit.

[0040] In one possible example, please refer to Figure 2 , Figure 2 This is a schematic diagram of a filtering subunit provided in an embodiment of this application. As shown in the figure, the filtering subunit 20 includes multiple filtering modules 201; the multiple filtering modules 201 are connected in parallel, and each filtering module in the multiple filtering modules 201 is used to filter the current acquired by the power unit.

[0041] Specifically, when the current charging mode is wired charging, the filtering module in the filtering subunit is used to filter the current from the wired charging unit. When the current charging mode is wireless charging, the filtering module in the filtering subunit is used to filter the current from the wireless charging unit.

[0042] As can be seen, by using multiple filtering units to simultaneously filter the current from the wired charging unit or the wireless charging unit in this application, not only can the filtering requirements of the on-board charging device be met, but the charging efficiency can also be improved.

[0043] In one possible example, please refer to Figure 3 , Figure 3This is a schematic diagram of a control unit provided in an embodiment of this application. As shown in the figure, the control unit 33 includes a first switch subunit 332, a second switch subunit 333, and a control subunit 331; the first switch subunit 332 is connected to the wired charging unit 31 and the power unit 34, and is used to control the connection relationship between the wired charging unit 31 and the power unit 34; the second switch subunit 333 is connected to the wireless charging unit 32 and the power unit 34, and is used to control the connection relationship between the wireless charging unit 32 and the power unit 34; the control subunit 331 is connected to the first switch subunit 332 and the second switch subunit 333, and is used to acquire detection signals and control the switching states of the first switch subunit 332 and the second switch subunit 333 according to the detection signals.

[0044] The first and second switch subunits may include relay switches or transistors that can perform switching functions. The first and second switch subunits remain in an open state when the on-board charging device is not in operation.

[0045] The control subunit may include a digital signal processing (DSP) chip and a control loop. The detection signal may be from an external charging device, such as a charging pile or a ground-based wireless charging coil. The external charging device is communicatively connected to the control subunit and sends the detection signal to it. The communication connection may include a mobile wireless communication network connection, such as a 4G or 5G network connection, or a Wi-Fi or cable connection. Alternatively, the control subunit may acquire the connection relationships between the wired charging unit and the wireless charging unit and the external charging device. Based on these connection relationships, the control subunit acquires the detection signal, determines the current charging mode of the on-board charging device, and then controls the first or second switch subunit to a closed state.

[0046] As can be seen, this application enables switching between wired charging mode and wireless charging mode through the control subunit, the first switch subunit, and the second switch subunit, providing users with multiple charging options to meet their needs.

[0047] In one possible example, the control subunit controls the switching states of the first switch subunit and the second switch subunit according to the detection signal, including: obtaining the currently available charging mode according to the detection signal, the charging mode including a wired charging mode or a wireless charging mode; if the currently available charging mode includes a wireless charging mode, controlling the switching state of the first switch subunit to be open and the switching state of the second switch subunit to be closed.

[0048] The currently available charging mode can be determined by a detection signal. This available charging mode includes either wired charging or wireless charging. If the currently available charging mode is wireless charging, the first switch subunit is set to open, and the second switch subunit is set to closed, disconnecting the wired charging unit from the power unit and connecting the wireless charging unit to the power unit. This allows the vehicle to obtain charging current through the wireless charging unit. Similarly, if the currently available charging mode is wired charging, the first switch subunit is set to closed, and the second switch subunit is set to open.

[0049] As can be seen, this application can achieve arbitrary switching of charging modes simply by changing the switching states of the first and second switching units. It is not only simple in structure, but also enables rapid switching of charging modes.

[0050] In one possible instance, where both the first switching unit and the second switching unit comprise transistor switches, the detection signal comprises a pulse width modulation (PWM) signal.

[0051] The first and second switching units can each include a field-effect transistor (MOSFET). The control unit controls the switching state of the MOSFETs according to the PWM signal. For example, when the charging mode is wired charging, the control unit outputs a high-level signal to the first switching unit and a low-level signal to the second switching unit, causing the MOSFET in the first switching unit to be closed and the MOSFET in the second switching unit to be open. Specifically, the control unit can also control the closing time of the MOSFET in the first switching unit according to the duty cycle of the PWM signal, so that the wired charging unit can output stable power.

[0052] As can be seen, in this example, controlling the switching state of the transistor switches in the first and second switching units by using PWM signals can improve the circuit stability of the on-board charging device.

[0053] In one possible example, please refer to Figure 4 , Figure 4This is a schematic diagram of a power unit provided in an embodiment of this application. As shown in the figure, the power unit 40 further includes a sampling subunit 401 for acquiring sampled values; the control subunit 411 is connected to the sampling subunit 401 and is used to generate a control signal based on the sampled values, and control the wired charging unit or the wireless charging unit to charge the battery through the power unit based on the control signal.

[0054] The sampling subunit can obtain sampled values ​​from the power unit when the power unit is working. These sampled values ​​can be voltage, current, or power values, etc. The obtained sampled values ​​are then fed back to the control unit, so that the control unit can generate control signals based on the sampled values ​​and control the wired charging unit or the wireless charging unit to output stable voltage and / or current to the power battery through the power unit.

[0055] As can be seen, by sharing a sampling subunit between the wired charging unit and the wireless charging unit in this application, not only can the current charging status be controlled in real time, but the cost, size and weight of automotive components can also be reduced, and the spatial layout of the vehicle can be optimized.

[0056] In one possible instance, the sampling subunit includes a current sampling module and / or a voltage sampling module, wherein the current sampling module is used to acquire current sampling values ​​and the voltage sampling module is used to acquire voltage sampling values.

[0057] The sampling subunit may include only one voltage sampling module, only one current sampling module, or both. The function of the voltage or current sampling module is to receive the input voltage or current at a specified time and maintain that voltage or current at the output until the next sampling begins. The voltage or current sampling module may include an analog switch, a holding capacitor, and a unity-gain non-inverting circuit.

[0058] As can be seen, the sampling method in this application, which involves sampling voltage and / or current values, is not only simple but also allows for the rapid generation of control signals.

[0059] In one possible example, the plurality of filter subunits respectively include a capacitor module and / or an inductor module.

[0060] Each filtering subunit may include only a capacitor module or both a capacitor module and an inductor module. A filtering unit may include multiple filtering subunits, and these subunits may contain different modules. For example, a filtering unit may include three filtering subunits: the first and second filtering subunits each include one capacitor module, while the third filtering subunit includes one capacitor module and two inductor modules. The capacitor module may include a filter capacitor, specifically an electrolytic capacitor.

[0061] For specific implementation details, please refer to [link / reference]. Figure 5 , Figure 5 This is a circuit diagram of an on-board charging device provided in an embodiment of this application. As shown in the figure, the power unit includes a filtering subunit, which includes three filtering subunits. The first and second filtering subunits each include a capacitor module, namely capacitors C1 and C2. The third filtering subunit includes a capacitor module C3 and two inductor modules, namely L1 and L2. The capacitors C1-C3 are used for filtering, and the inductors L1 and L2 are used for filtering and suppressing noise interference. The sampling subunit includes a voltage sampling module VS and a current sampling module IS. The control unit includes a first switching subunit S1A, a second switching subunit S1B, and a control subunit.

[0062] As can be seen, the filtering using capacitor modules and / or inductor modules in this application not only meets the filtering requirements of on-board charging devices, but also has a simple structure.

[0063] In one possible example, please refer to Figure 6 , Figure 6 This is a schematic diagram of another power unit provided in an embodiment of this application. As shown in the figure, the power unit 60 further includes a rectifier subunit 601; the rectifier subunit 601 is connected to the filter subunit 602 and is used to rectify the current obtained by the power unit 60.

[0064] In the wired charging mode, the rectifier subunit rectifies the current from the wired charging unit. The filter subunit then filters the rectified current before outputting it to charge the power battery. In the wireless charging mode, the rectifier subunit rectifies the current from the wireless charging unit, and the filter subunit further filters the rectified current. Alternatively, in a practical implementation, filtering can precede rectification; the current received by the power unit can be filtered by the filter subunit first, and then rectified by the rectifier subunit.

[0065] As can be seen, in this example, the wired charging unit and the wireless charging unit share a single rectifier subunit and filter subunit for rectification and filtering, which can reduce the cost, size and weight of automotive components and optimize the spatial layout of the vehicle.

[0066] Please see Figure 7 , Figure 7 This is a schematic diagram of a vehicle structure provided in an embodiment of this application. As shown in the figure, the vehicle includes the on-board charging device described in any of the above embodiments.

[0067] It should be noted that, for the sake of simplicity, the foregoing embodiments of each device or module are described as a series of actions. However, those skilled in the art should understand that this application is not limited to the described order of actions, as some steps may be performed in other orders or simultaneously according to this application. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions and modules involved are not necessarily essential to this application.

[0068] In the embodiments provided in this application, it should be understood that the disclosed apparatus can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of modules described above is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between devices or units may be electrical or other forms.

[0069] The modules described above as separate components may or may not be physically separate. Similarly, the components shown as modules may or may not be physical modules; they may be located in one place or distributed across multiple network modules. Some or all of the modules can be selected to achieve the purpose of this embodiment, depending on actual needs.

[0070] Furthermore, the functional modules in the various embodiments of this application can be integrated into one processing module, or each module can exist physically separately, or two or more modules can be integrated into one module. The integrated modules described above can be implemented in hardware or as software functional modules.

[0071] The embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand this application and its core ideas. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A vehicle-mounted charging device, characterized in that, The device includes a wired charging unit, a wireless charging unit, a control unit, and a power unit. The power unit includes a filtering subunit, which includes multiple filtering modules connected in parallel. Each filtering module is used to filter the current acquired by the power unit. The multiple filtering modules each include a capacitor module and / or an inductor module, and at least one of the multiple filtering modules includes a capacitor module and two inductor modules connected in series. The control unit includes a first switch subunit, a second switch subunit, and a control subunit; the first switch subunit is connected to the wired charging unit and the power unit, and is used to control the connection relationship between the wired charging unit and the power unit; the second switch subunit is connected to the wireless charging unit and the power unit, and is used to control the connection relationship between the wireless charging unit and the power unit. The control subunit is connected to the first switch subunit and the second switch subunit, and is used to acquire a detection signal and acquire the currently available charging mode according to the detection signal. The charging mode includes a wired charging mode or a wireless charging mode. The control subunit controls the switching state of the first switch subunit and the second switch subunit according to the detection signal. The detection signal is a communication signal. The first switch subunit and the second switch subunit each include a field-effect transistor. The detection signal includes a pulse width modulation (PWM) signal. When the charging mode is wired charging, the control subunit outputs a high-level signal to the first switch subunit and a low-level signal to the second switch subunit, so that the field-effect transistor in the first switch subunit is closed and the field-effect transistor in the second switch subunit is open, and the closing time of the field-effect transistor in the first switch subunit is controlled according to the duty cycle of the pulse width modulation (PWM) signal. The wired charging unit and the wireless charging unit are used to acquire charging current; the control unit is used to control the wired charging unit or the wireless charging unit to charge the battery through the power unit; the filtering subunit is used to filter the current acquired by the power unit and output it to charge the power battery.

2. The apparatus according to claim 1, characterized in that, When the currently available charging mode includes wireless charging, the control subunit controls the first switch subunit to be open and the second switch subunit to be closed.

3. The apparatus according to claim 1, characterized in that, The power unit further includes a sampling subunit for acquiring sampled values; The control subunit is connected to the sampling subunit and is used to generate a control signal based on the sampled value, and to control the wired charging unit or the wireless charging unit to charge the battery through the power unit based on the control signal.

4. The apparatus according to claim 3, characterized in that, The sampling subunit includes a current sampling module and / or a voltage sampling module. The current sampling module is used to acquire current sampling values, and the voltage sampling module is used to acquire voltage sampling values.

5. The apparatus according to any one of claims 1-4, characterized in that, The power unit also includes a rectifier subunit; The rectifier subunit is connected to the filter subunit and is used to rectify the current obtained by the power unit.

6. A vehicle, characterized in that, Includes the on-board charging device as described in any one of claims 1-4.

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