Power supply device

Abstract

The utility model provides a power supply device. The power supply device comprises a direct-current power supply conversion module, a preset battery and a controller, the direct-current power supply conversion module is connected to a direct-current bus and the preset battery; the anode output end of the direct-current power supply conversion module is connected with the anode output end of the preset battery and then serves as a first output end to be connected to an external load; the cathode output end of the direct-current power supply conversion module is connected with the cathode output end of the preset battery and then serves as a second output end to be connected to an external load; and the controller is respectively connected to the direct current power supply conversion module and the preset battery. According to the invention, stable output voltage can be provided for the external load.

Description

Technical Field

[0001] The present disclosure relates to the field of power electronics technology, and particularly to a power supply device. Background Art

[0002] With the rapid growth of the market demand for new energy vehicles, more and more pure electric vehicles are put into use. How to provide a stable output voltage for the loads on the electric vehicles has become an urgent problem to be solved.

[0003] However, common vehicle body power supply devices often have problems such as low energy density of the storage battery, large volume and weight, short service life; and complex system structure. Summary of the Utility Model

[0004] The present disclosure provides a power supply device to solve the problems in the prior art that the vehicle body power supply device has a complex structure and cannot stably provide voltage.

[0005] The present disclosure provides a power supply device, including: a DC power conversion module, a preset battery, and a controller;

[0006] The DC power conversion module is connected to a DC bus and the preset battery;

[0007] The positive output terminal of the DC power conversion module is connected to the positive output terminal of the preset battery, and then used as a first output terminal to be connected to an external load;

[0008] The negative output terminal of the DC power conversion module is connected to the negative output terminal of the preset battery, and then used as a second output terminal to be connected to an external load;

[0009] The controller is respectively connected to the DC power conversion module and the preset battery.

[0010] In one embodiment, the DC power conversion module is configured such that a first voltage sensor is connected between the positive output terminal and the negative output terminal.

[0011] The first voltage sensor is connected to the controller.

[0012] In one embodiment, the preset battery is configured such that a second voltage sensor is connected between the positive output terminal and the negative output terminal;

[0013] The second voltage sensor is connected to the controller.

[0014] In one embodiment, an alarm module is further included. The alarm module is connected to the controller and is used to give an alarm when receiving an alarm signal sent by the controller.

[0015] In one embodiment, it further includes a current sensor connected between the first output terminal and an external load;

[0016] The current sensor is connected to the controller and is used to collect real-time current values ​​and send them to the controller.

[0017] In one embodiment, it further includes a control switch connected between the second output terminal and an external load;

[0018] The control switch is connected to the controller, and is used to control the connection between the second output end and the external load when receiving a first control signal sent by the controller, or to control the disconnection between the second output end and the external load when receiving a second control signal sent by the controller.

[0019] In one embodiment, the DC power conversion module includes a DC converter.

[0020] In one of the embodiments, the rated voltage of the DC power conversion module is 12V or 24V.

[0021] In one embodiment, the preset battery includes a lithium battery or a sodium battery.

[0022] In one embodiment, the rated voltage of the preset battery is 12V or 24V.

[0023] The above-mentioned power supply device, by having a built-in preset battery and connecting the preset battery to a DC power conversion module, can not only use the preset battery and the DC power conversion module to provide a stable output voltage for an external load, but also use the DC power conversion module to charge the preset battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 is a schematic structural diagram of a power supply device in one embodiment;

[0026] Figure 2 FIG. 4 is a schematic diagram of the structure of a power supply device in an embodiment.

[0027] Description of reference numerals:

[0028] 100. Power supply device; 110. Controller; 120. DC power conversion module; 130. Preset battery; 140. First voltage sensor; 150. Second voltage sensor; 160. Alarm module; 170. Current sensor; 180. Control switch. Detailed implementation manners

[0029] To facilitate the understanding of the present disclosure, the present disclosure will be described more comprehensively below with reference to the relevant drawings. Preferred embodiments of the present disclosure are shown in the drawings. However, the present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided so that the disclosure of the present disclosure will be thorough and comprehensive.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this disclosure belongs. The terms used herein in the description of the present disclosure are for the purpose of describing specific embodiments only and are not intended to limit the present disclosure.

[0031] It should be understood that when an element or layer is referred to as being "on", "adjacent to", "connected to" or "coupled to" another element or layer, it can be directly on, adjacent to, connected or coupled to the other element or layer, or intervening elements or layers may be present. In contrast, when an element is referred to as being "directly on", "directly adjacent to", "directly connected to" or "directly coupled to" another element or layer, there are no intervening elements or layers. It should be understood that although the terms first, second, third, etc. may be used to describe various elements, components, regions, layers and / or portions, these elements, components, regions, layers and / or portions should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or portion from another element, component, region, layer or portion. Thus, the first element, component, region, layer or portion discussed below may be denoted as the second element, component, region, layer or portion without departing from the teachings of the present invention.

[0032] Spatial relationship terms such as "under", "below", "lower", "beneath", "above", "upper", etc. may be used herein to describe the relationship of one element or feature shown in the figures to other elements or features. It should be understood that, in addition to the orientations shown in the figures, spatial relationship terms also include different orientations of the device in use and operation. For example, if the device in the attached drawings is flipped, an element or feature described as "under other elements" or "beneath it" or "under it" will be oriented "above" the other elements or features. Thus, the exemplary terms "under" and "beneath" can include both upper and lower orientations. Additionally, the device may also have other orientations (such as being rotated 80 degrees or other orientations), and the spatial descriptors used herein are to be interpreted accordingly.

[0033] As used herein, the singular forms "a", "an", and "the" may also include the plural forms unless the context clearly dictates otherwise. It should also be understood that when the terms "comprise" and / or "include" are used in this specification, the presence of the stated features, integers, steps, operations, elements, and / or components can be determined, but one or more other features, integers, steps, operations, elements, components, and / or groups thereof are not excluded from being present or added. Also, as used herein, the term "and / or" includes any and all combinations of the associated listed items.

[0034] In some embodiments of the present disclosure, as Figure 1 shown, a power supply device 100 is provided, including: a controller 110, a DC power conversion module 120, and a preset battery 130.

[0035] The DC power conversion module 120 is connected to the DC bus and the preset battery 130.

[0036] The positive output terminal of the DC power conversion module 120 is connected to the positive output terminal of the preset battery 130 and then used as a first output terminal to be connected to an external load.

[0037] The negative output terminal of the DC power conversion module 120 is connected to the negative output terminal of the preset battery 130 and then used as a second output terminal to be connected to an external load.

[0038] The controller 110 is respectively connected to the DC power conversion module 120 and the preset battery 130.

[0039] The power supply device 100 can be disposed on a new energy vehicle and connected to at least one specific load carried on the vehicle body.

[0040] Among them, the DC power conversion module 120 can be, for example, a 12V / 24V DC converter. A DC converter is an electrical circuit or electromechanical device that can convert a DC power supply into a DC power supply with a different voltage. Its power range can range from very small to very large. For some DC converters, the output voltage has the same reference point as the input voltage of the DC bus, while for some DC converters, the output voltage is isolated from the input voltage of the DC bus.

[0041] In some embodiments, the preset battery 130 can be, for example, a lithium battery or a sodium battery, and the preset battery 130 can provide an output voltage of 12V or 24V.

[0042] In some embodiments, the output end of the controller 110 can be respectively connected to the communication ends of the DC power conversion module 120 and the preset battery 130. When the DC power conversion module 120 receives the first power supply signal sent by the controller 110, it can convert the original DC voltage of the DC bus into the target DC voltage required by the load. When the DC power conversion module 120 uses a DC converter, the original DC voltage can be 12V or 24V; the preset battery 130 can assist the DC power conversion module 120 and jointly output the target DC voltage required by the load when it receives the second power supply signal sent by the controller 110.

[0043] In some embodiments, the first power supply signal refers to the signal for supplying power to the load on the body of the new energy vehicle using the DC power conversion module 120. The second power supply signal refers to the signal for supplying power to the load on the body of the new energy vehicle using the preset battery 130.

[0044] In some embodiments, the controller 110 can generate a first control signal and a second control signal according to the received external power supply signal, and this power supply signal can be sent by the controller of the vehicle computer when the user starts a certain device on the new energy vehicle.

[0045] In some alternative embodiments, as Figure 2 shown, the DC power conversion module 120 is configured such that a first voltage sensor 140 is connected between the positive output terminal and the negative output terminal. The first voltage sensor 140 is connected to the controller 110.

[0046] In some alternative embodiments, as Figure 2 shown, the preset battery 130 is configured such that a second voltage sensor 150 is connected between the positive output terminal and the negative output terminal. The second voltage sensor 150 is connected to the controller 110.

[0047] In some embodiments, the first voltage sensor 140 is used to detect the voltage level of the DC power conversion module 120. When the actual voltage collected by the first voltage sensor 140 is lower than the preset first voltage value, it can be considered that the DC power conversion module 120 has failed.

[0048] Those skilled in the art can set the first voltage value according to actual needs, as long as the first voltage value can reflect that the DC power conversion module 120 cannot supply power normally. For example, the first voltage value is 80% of the voltage after conversion by the DC power conversion module 120. The present disclosure places no limitation on this.

[0049] The second voltage sensor 150 is used to detect the voltage level of the preset battery 130. When the actual voltage collected by the second voltage sensor 150 is lower than the preset second voltage value, it can be considered that the preset battery 130 is out of power or has failed.

[0050] Those skilled in the art can set the second voltage value according to actual needs, as long as the second voltage value can reflect that the preset battery 130 cannot supply power normally. For example, the second voltage value is 80% of the voltage that the preset battery 130 can output when fully charged. The present disclosure places no limitation on this.

[0051] In some embodiments, the functions of the controller 110 further include: collecting the first real-time voltage value of the first voltage sensor and the second real-time voltage value of the second voltage sensor; and generating a first adjustment signal and sending it to the DC power conversion module, and generating a second adjustment signal and sending it to the preset battery according to the first real-time voltage value and the second real-time voltage value, so as to control the DC power conversion module and the preset battery to continuously provide a stable target voltage for the external load.

[0052] In some embodiments, the first adjustment signal refers to a signal for adjusting the actual voltage output by the DC power conversion module, and the second adjustment signal refers to a signal for adjusting the actual voltage output by the preset battery. By monitoring the first real-time voltage value of the first voltage sensor and the second real-time voltage value of the second voltage sensor, the controller can obtain the power supply conditions of the DC power conversion module and the preset battery in real time, and coordinate the power output relationship between the DC power conversion module and the preset battery to achieve stable power supply to the external load.

[0053] In some embodiments, the target voltage refers to the voltage required by the external load.

[0054] In some embodiments of the present disclosure, when the actual voltage collected by the second voltage sensor 150 is lower than the preset second voltage value, the controller 110 can also generate a charging signal and send it to the DC power conversion module 120, so as to control the DC power conversion module 120 to charge the preset battery 130.

[0055] In some embodiments, the replenishing signal refers to a signal for controlling the DC power conversion module 120 to output electric energy to the preset battery 130 to charge the preset battery 130 with insufficient stored power. The replenishing signal further includes, for example, the charging voltage for charging the preset battery 130. After receiving the replenishing signal, the DC power conversion module 120 can convert the input voltage provided by the DC bus into the charging voltage according to the charging voltage for charging the preset battery 130 carried by the replenishing signal and output it to the preset battery 130.

[0056] As Figure 2 shown, in some alternative embodiments, the power supply device 100 further includes an alarm module 160, and the alarm module 160 is connected to the controller 110. The alarm module 160 is connected to the controller 110 and is configured to issue an alarm when receiving the alarm signal sent by the controller 110.

[0057] In some embodiments, the alarm module 160 can be disposed on the human-machine interaction interface of the new energy vehicle's in-vehicle computer or at any prominent position on the new energy vehicle. When the controller 110 in the power supply device 100 acquires the actual voltage of the DC power conversion module 120 based on the first voltage sensor 140 and determines that the actual voltage of the DC power conversion module 120 is lower than the preset first voltage value, the controller 110 can send a first type of alarm signal to the alarm module 160, and the alarm module 160 issues an alarm in a sound, light, or electrical manner.

[0058] In some embodiments, when the controller 110 in the power supply device 100 acquires the actual voltage of the preset battery 130 based on the second voltage sensor 150 and determines that the actual voltage of the preset battery 130 is lower than the preset second voltage value, the controller 110 can send a second type of alarm signal to the alarm module 160, and the alarm module 160 issues an alarm in a sound, light, or electrical manner.

[0059] As an example, the alarm signal can be a text prompt message generated by the controller 110. After receiving the first type of alarm signal, the alarm module 160 displays the corresponding text prompt message to the user through the human-machine interaction interface of the in-vehicle computer to prompt the user that the DC power conversion module 120 may malfunction; or after receiving the second type of alarm signal, the alarm module 160 displays the corresponding text prompt message to the user through the human-machine interaction interface of the in-vehicle computer to prompt the user that the preset battery 130 has insufficient power or malfunctions.

[0060] Alternatively, after the controller 110 generates a charge replenishment instruction and sends it to the DC power conversion module 120 to control the DC power conversion module 120 to replenish the preset battery 130, the power information of the preset battery 130 can be continuously collected; when the power information indicates that the battery charge value of the preset battery 130 does not increase, the controller 110 can generate a third type of alarm signal and send it to the alarm module 160. After receiving the third type of alarm signal, the alarm module 160 displays the corresponding text prompt information to the user through the human-machine interaction interface of the vehicle to prompt the user that the DC power conversion module 120 cannot charge the preset battery 130.

[0061] In some embodiments, the power information of the preset battery refers to the current charge state of the preset battery, which generally includes the following: the remaining power of the preset battery: that is, the amount of charge that has not been consumed in the preset battery, usually expressed as a percentage; the charging state of the preset battery: that is, whether the preset battery is currently charging or discharging; the capacity of the preset battery: that is, the total amount of power that the preset battery can store; the health state of the preset battery: that is, the life and performance status of the preset battery, usually evaluated by indicators such as the number of cycles and the charging speed; charger information: including information such as the current charging speed and charging method of the preset battery.

[0062] In some alternative embodiments, as Figure 2 shown, the power supply device 100 further includes a current sensor 170. The current sensor 170 is connected between the first output terminal and the external load, and the current sensor 170 is connected to the controller 110.

[0063] The current sensor 170 is used to collect the actual current value output from the power supply device 100 to the external load.

[0064] In some alternative embodiments, as Figure 2 shown, the power supply device 100 further includes a control switch 180. The control switch 180 is connected between the second output terminal and the external load; the control switch 180 is connected to the controller 110.

[0065] In some embodiments, the control switch 180 is an electrical device used to control the flow of current in a circuit. It usually consists of a mechanical switch and supporting electrical components and can perform switch operations through received control signals. The main function of the control switch is to open, close, or switch the current flow path in the circuit, thereby realizing the control of electrical equipment.

[0066] In some embodiments, when the controller 110 receives a power supply signal for powering an external load, it can generate a first control signal and send it to the control switch 180 to control the closing of the control switch 180. When the actual voltage of the DC power conversion module 120 collected by the first voltage sensor 140 is lower than a preset first voltage value or the actual voltage of the preset battery 130 collected by the second voltage sensor 150 is lower than a preset second voltage value, while generating an alarm signal and sending it to the alarm module 160, the controller 110 can generate a second control signal and send it to the control switch 180 to control the opening of the control switch 180, stopping the DC power conversion module 120 and the preset battery 130 from powering the external load.

[0067] The above power supply device 100 incorporates the preset battery 130 and connects the preset battery 130 and the DC power conversion module 120, enabling the power supply device 100 to not only provide a stable output voltage for the external load using the preset battery 130 and the DC power conversion module 120, but also charge the preset battery 130 using the DC power conversion module 120.

[0068] Based on the same inventive concept, in some embodiments of the present disclosure, a vehicle is further provided. The vehicle is provided with the power supply device described in any of the above embodiments and uses the power supply device to power the loads on the vehicle body.

[0069] In addition, in the description of the embodiments of the present utility model, unless otherwise clearly defined and limited, the terms "mounted", "connected", and "coupled" should be construed 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 directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0070] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and should not be construed as indicating or implying relative importance.

[0071] Finally, it should be noted that the above embodiments are only specific implementation manners of the present utility model, used to illustrate the technical solutions of the present utility model, rather than limiting it. The protection scope of the present utility model is not limited thereto. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art within the technical scope disclosed by the present utility model can still modify the technical solutions recorded in the foregoing embodiments, or can easily think of changes, or perform equivalent replacements on some of the technical features; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present utility model, and should all be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims

1. A power supply device, characterized in that: include: DC power conversion module, preset battery and controller; The DC power conversion module is connected to the DC bus and the preset battery; The positive output terminal of the DC power conversion module is connected to the positive output terminal of the preset battery and then connected to an external load as a first output terminal; The negative output terminal of the DC power conversion module is connected to the negative output terminal of the preset battery and then connected to an external load as a second output terminal; The controller is connected to the DC power conversion module and the preset battery respectively; The DC power conversion module is configured as follows: a first voltage sensor is connected between the positive output terminal and the negative output terminal; The first voltage sensor is connected to the controller; The preset battery is configured as follows: a second voltage sensor is connected between the positive output terminal and the negative output terminal; The second voltage sensor is connected to the controller.

2. The power supply device according to claim 1, characterized in that: It also includes an alarm module, which is connected to the controller and is used to issue an alarm when receiving an alarm signal sent by the controller.

3. The power supply device according to claim 1, characterized in that: Also included is a current sensor connected between the first output terminal and an external load; The current sensor is connected to the controller and is used to collect real-time current values ​​and send them to the controller.

4. The power supply device according to claim 1, characterized in that: Also includes a control switch, the control switch is connected between the second output terminal and an external load; The control switch is connected to the controller, and is used to control the connection between the second output end and the external load when receiving a first control signal sent by the controller, or to control the disconnection between the second output end and the external load when receiving a second control signal sent by the controller.

5. The power supply device according to claim 1, characterized in that: The DC power conversion module includes a DC converter.

6. The power supply device according to claim 5, characterized in that: The rated voltage of the DC power conversion module is 12V or 24V.

7. The power supply device according to claim 1, characterized in that: The preset battery includes a lithium battery or a sodium battery.

8. The power supply device according to claim 1, characterized in that: The rated voltage of the preset battery is 12V or 24V.

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