Power supply device and power supply system

Abstract

The utility model provides a power supply device and a power supply system, and relates to the technical field of power supplies. The power supply device comprises a shell, a power supply circuit and a series-parallel connection protection circuit, the shell is provided with a positive terminal and a negative terminal, the series-parallel connection protection circuit comprises a first diode and a second diode, the positive electrode of the first diode is connected with the positive electrode output end of the power supply circuit, and the negative electrode of the second diode is connected with the negative electrode output end of the power supply circuit. The cathode of the first diode is electrically connected with the cathode and the anode terminal of the second diode; the anode of the second diode is electrically connected with the cathode output end and the cathode terminal of the power supply circuit; the power supply circuit and the series-parallel connection protection circuit are packaged in the shell; the power supply system comprises a plurality of power supply devices which are connected in series or in parallel. Therefore, according to the embodiment of the invention, simpler multi-gear voltage power supply can be realized, and the cost is lower.

Description

Technical Field

[0001] The embodiments of this application relate to, but are not limited to, the field of power supply technology, and in particular to a power supply device and a power supply system. Background Technology

[0002] Power supply units are typically used to provide power at at least one voltage level. However, in practical applications, there are various voltage requirements, necessitating a power supply unit that can meet the supply needs of multiple voltage ranges. But for power supply units powering outdoor exploration equipment, these units are often custom-designed, making it very costly to meet the supply needs of multiple voltage ranges. Therefore, there is an urgent need for a power supply unit that can achieve simpler, more cost-effective multi-voltage supply. Utility Model Content

[0003] The following is an overview of the subject matter described in detail herein. This overview is not intended to limit the scope of the claims. Embodiments of this application provide a power supply device and power supply system that enables simpler multi-level voltage power supply at a lower cost.

[0004] In a first aspect, the power supply device according to the embodiments of this application includes:

[0005] The housing has a positive terminal and a negative terminal.

[0006] Power supply circuit;

[0007] A series-parallel protection circuit includes a first diode and a second diode. The anode of the first diode is connected to the positive output terminal of the power supply circuit. The cathode of the first diode is electrically connected to the cathode and the positive terminal of the second diode. The anode of the second diode is electrically connected to the negative output terminal and the negative terminal of the power supply circuit.

[0008] The power supply circuit and the series-parallel protection circuit are both encapsulated within the housing.

[0009] Therefore, the above embodiments of this application have at least the following beneficial effects: by adding a series-parallel protection circuit at the output terminal of the power supply circuit, multiple power supply devices can be connected in series or parallel through the positive and negative terminals. The first and second diodes of the series-parallel protection circuit prevent reverse current supply. Furthermore, when multiple power supply devices are connected in series or parallel, the total output voltage of the multiple series- or parallel power supply devices can meet the needs of more different voltage outputs. At this time, more different voltage supply needs can be met while keeping the power supply circuit of the power supply device unchanged, and the cost is lower. Therefore, compared with related technologies, the embodiments of this application can achieve simpler multi-level voltage supply at a lower cost.

[0010] According to some embodiments of the first aspect of this application, the power supply circuit includes a battery pack and a first relay group. The first relay group includes a first relay and a second relay. The positive terminal of the battery pack is electrically connected to the positive power contacts of both the first and second relays. The negative terminal of the battery pack is electrically connected to the negative power contacts of both the first and second relays. The positive terminal of the battery pack is also connected to the input contact of the first relay. The output contact of the first relay serves as the positive output terminal and is connected to the positive terminal of the first diode. The input contact of the second relay is connected to the negative terminal of the battery pack. The output contact of the second relay serves as the negative output terminal and is connected to the positive terminal of the second diode.

[0011] According to some embodiments of the first aspect of this application, a switch group is provided on the housing; the power circuit further includes a second relay group and a power conversion module. The second relay group includes a third relay, a fourth relay, a fifth relay, and a sixth relay. The input contacts of the third relay and the fourth relay are connected to the battery pack. The output contacts of the third relay and the fourth relay are respectively connected to the two input terminals of the power conversion module. The two output terminals of the power conversion module are respectively connected to the input contacts of the fifth relay and the sixth relay. The output contacts of the fifth relay and the sixth relay serve as the positive output terminal and the negative output terminal, respectively. The positive power contacts of the third relay, the fourth relay, the fifth relay, and the sixth relay are all connected to the positive terminal of the battery pack through the switch group. The negative power contacts of the third relay, the fourth relay, the fifth relay, and the sixth relay are all connected to the negative terminal of the battery pack. The switch group is configured with a first position switch and a second position switch. The second position switch is used to connect the battery pack to each relay in the second relay group. The first position switch is used to connect the battery pack to each relay in the first relay group.

[0012] According to some embodiments of the first aspect of this application, the power supply circuit further includes a filtering module located between the switch group and the battery pack, the filtering module being used to filter the current output by the battery pack.

[0013] According to some embodiments of the first aspect of this application, the power supply device is further provided with a first emergency stop switch, which is used to disconnect each relay in the first relay group from the battery pack.

[0014] According to some embodiments of the first aspect of this application, the power supply device is further provided with a second emergency stop switch, which is used to disconnect each relay in the second relay group from the battery pack.

[0015] According to some embodiments of the first aspect of this application, the power supply device further includes a display screen, the positive power input terminal of the display screen being connected to the output terminal of the switch group, and the negative power input terminal of the display screen being connected to the negative terminal of the battery pack.

[0016] According to some embodiments of the first aspect of this application, the power supply device further includes a third diode and a fourth diode, the two ends of the third diode being connected to the first gear switch and the display screen, respectively, and the two ends of the fourth diode being connected to the second gear switch and the display screen, respectively.

[0017] Secondly, according to the power system provided in the embodiments of this application, the power system includes a plurality of power devices as described in the first aspect, the positive terminals of the plurality of power devices are interconnected, and the negative terminals of the plurality of power devices are interconnected.

[0018] Thirdly, according to the power system provided in the embodiments of this application, the power system includes a plurality of power devices as described in the first aspect, and the plurality of power devices are connected in series sequentially through corresponding positive terminals and negative terminals. Attached Figure Description

[0019] The accompanying drawings are used to provide a further understanding of the technical solutions of this application and constitute a part of the specification. They are used together with the embodiments of this application to explain the technical solutions of this application and do not constitute a limitation on the technical solutions of this application.

[0020] Figure 1 This is a schematic diagram of the power supply device provided in this application;

[0021] Figure 2 This is a circuit diagram of one embodiment of the power supply device provided in this application;

[0022] Figure 3This is a circuit schematic diagram of an embodiment of the power supply system provided in this application;

[0023] Figure 4 This is the circuit principle of another embodiment of the power supply system provided in this application.

[0024] Figure label:

[0025] 100 housing, 110 positive terminal, 120 negative terminal

[0026] Power supply circuit 210, battery pack 211, filter module 212, switch group 213, display screen 214, power conversion module 215, series and parallel protection circuit 220. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing embodiments of this application only and is not intended to limit this application. The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0029] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a thorough understanding of embodiments of this disclosure. However, those skilled in the art will recognize that the technical solutions of this disclosure can be practiced without one or more of the specific details, or other methods, components, apparatuses, steps, etc., can be employed. In other instances, well-known methods, apparatuses, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of this disclosure.

[0030] Understandably, referring to Figure 1 and Figure 2 As shown, the power supply device according to an embodiment of this application includes:

[0031] The housing 100 is provided with a positive terminal 110 and a negative terminal 120.

[0032] Power supply circuit 210;

[0033] The series-parallel protection circuit 220 includes a first diode and a second diode. The positive terminal of the first diode is connected to the positive output terminal of the power supply circuit 210, and the negative terminal of the first diode is electrically connected to the negative terminal and positive terminal 110 of the second diode. The positive terminal of the second diode is electrically connected to the negative output terminal and negative terminal 120 of the power supply circuit 210.

[0034] The power supply circuit 210 and the series-parallel protection circuit 220 are both encapsulated within the housing.

[0035] Therefore, by adding a series-parallel protection circuit 220 at the output terminal of the power supply circuit 210, multiple power supply devices can be connected in series or parallel through the positive terminal 110 and the negative terminal 120. The first and second diodes of the series-parallel protection circuit 220 prevent reverse current supply. Furthermore, when multiple power supply devices are connected in series or parallel, the total output voltage of the multiple series- or parallel power supply devices can meet the needs of more different voltage outputs. At this time, more different voltage supply needs can be met while keeping the circuit of the power supply circuit 210 of the power supply device unchanged, and the cost is lower. Therefore, compared with related technologies, the embodiments of this application can achieve simpler multi-level voltage supply at a lower cost.

[0036] It should be noted that the specific circuit structure of the power supply circuit 210 is not limited in the embodiments of this application. The power supply circuit 210 can provide one output voltage or multiple voltages.

[0037] For example, if the power supply circuit 210 can provide a low-voltage output of 48V / 10A and a high-voltage output of 1A with an adjustable voltage of 400-500V, then when four power supply devices are connected in series at the low voltage level, it can provide 192V / 10A; when four power supply devices are connected in parallel at the low voltage level, it can provide 48V / 40A; when four power supply devices are connected in series at the high voltage level, it can provide 1600V-2000V / 1A; and when four power supply devices are connected in parallel at the high voltage level, it can provide 400-500V / 4A, for a total of four power supply specifications. Therefore, the embodiments of this application can achieve a wider range of power supply voltages without requiring customized settings for the power supply devices.

[0038] It is understood that the embodiments of this application do not limit the type of the first diode and the second diode, nor do they limit the number of the first diode and the second diode. For example, such as Figure 2 As shown, there is one first diode D4, which is configured as a power diode, and there is one second diode D3, which is configured as a power diode.

[0039] Understandably, referring to Figure 3As shown, according to the power system provided in the embodiment of this application, the power system includes multiple power devices. Each power device includes a housing, a power circuit 210, and a series-parallel protection circuit 220. The housing is provided with a positive terminal 110 and a negative terminal 120. The series-parallel protection circuit 220 includes a first diode and a second diode. The positive terminal of the first diode is connected to the positive output terminal of the power circuit 210, and the negative terminal of the first diode is electrically connected to the negative terminal and the positive terminal 110 of the second diode. The positive terminal of the second diode is electrically connected to the negative output terminal and the negative terminal 120 of the power circuit 210. The power circuit 210 and the series-parallel protection circuit 220 are both encapsulated in the housing. The multiple power devices are connected in series sequentially through their corresponding positive terminals 110 and negative terminals 120.

[0040] For example, such as Figure 3 As shown, four power supply devices are connected in series. The positive terminal 110 of the first power supply device is connected to the positive terminal of the load, and the negative terminal 120 of the first power supply device is connected to the positive terminal 110 of the second power supply device. The negative terminal 120 of the second power supply device is connected to the positive terminal 110 of the third power supply device. The negative terminal 120 of the third power supply device is connected to the positive terminal 110 of the fourth power supply device, and the negative terminal 120 of the fourth power supply device is connected to the negative terminal of the load. This configuration allows for a higher voltage supply under the same current.

[0041] Understandably, referring to Figure 4 As shown, the power system provided according to the embodiments of this application includes multiple power devices. Each power device includes a housing, a power circuit 210, and a series-parallel protection circuit 220. The housing is provided with a positive terminal 110 and a negative terminal 120. The series-parallel protection circuit 220 includes a first diode and a second diode. The positive terminal of the first diode is connected to the positive output terminal of the power circuit 210, and the negative terminal of the first diode is electrically connected to the negative terminal and the positive terminal 110 of the second diode. The positive terminal of the second diode is electrically connected to the negative output terminal and the negative terminal 120 of the power circuit 210. The power circuit 210 and the series-parallel protection circuit 220 are both encapsulated within the housing. The positive terminals 110 of the multiple power devices are interconnected, and the negative terminals 120 of the multiple power devices are interconnected.

[0042] For example, such as Figure 4 As shown, four power supply units are connected in parallel. The positive terminals 110 of the four power supply units are interconnected, and the negative terminals 120 of the four power supply units are interconnected. The negative terminal of the load is connected to the interconnection point of the negative terminals 120 of the four power supply units, and the positive terminal of the load is connected to the interconnection point of the positive terminals 110 of the four power supply units. This allows for a larger current supply at the same voltage.

[0043] Understandably, referring to Figure 2 As shown, the power supply circuit 210 includes a battery pack 211 and a first relay group. The first relay group includes a first relay and a second relay. The positive terminal of the battery pack 211 is electrically connected to the positive power contacts of both the first and second relays. The negative terminal of the battery pack 211 is electrically connected to the negative power contacts of both the first and second relays. The positive terminal of the battery pack 211 is also connected to the input contact of the first relay. The output contact of the first relay is connected to the positive terminal of the first diode as a positive output terminal. The input contact of the second relay is connected to the negative terminal of the battery pack 211. The output contact of the second relay is connected to the positive terminal of the second diode as a negative output terminal.

[0044] It should be noted that the types of relays in the first relay group are not limited in the embodiments of this application.

[0045] It should be noted that other electrical components, such as control switches or filter components, can also be installed between the battery pack 211 and the first relay group.

[0046] It should be noted that low-voltage power supply can be achieved by setting up battery pack 211.

[0047] It should be noted that the negative and positive power contacts on the same relay are a pair of corresponding contacts, and the input and output contacts on the same relay are a pair of corresponding contacts. When current flows between the negative and positive power contacts of the first relay, it triggers the connection between the input and output contacts of the first relay, and the first diode conducts with the battery pack 211. Similarly, for the second relay, when current flows between the negative and positive power contacts of the second relay, it triggers the connection between the input and output contacts of the second relay, and the second diode conducts with the battery pack 211. At this time, when the input and output contacts of the first relay and the second relay are connected, the power supply device can provide power.

[0048] For example, such as Figure 2 As shown, the first relay is K1 and the second relay is K2. The 0 / 1 contact of K1 is a normally open contact, and the 0 / 1 contact of K2 is a normally open contact. When both K1 and K2 are energized, the 0 / 1 contacts of K1 and K2 are closed. The first diode is connected to the battery pack 211, and the second diode is connected to the battery pack 211, so that power can be supplied when the load is connected to the positive terminal 110 and the negative terminal 120.

[0049] Understandably, referring to Figure 2As shown, a switch group 213 is provided on the housing; the power circuit 210 also includes a second relay group and a power conversion module 215. The second relay group includes a third relay, a fourth relay, a fifth relay, and a sixth relay. The input contacts of the third and fourth relays are connected to the battery pack 211, and the output contacts of the third and fourth relays are respectively connected to the two input terminals of the power conversion module 215. The two output terminals of the power conversion module 215 are respectively connected to the input contacts of the fifth and sixth relays, and the output contacts of the fifth and sixth relays are respectively connected to the input contacts of the fifth and sixth relays. As positive and negative output terminals, the positive power contacts of the third, fourth, fifth, and sixth relays are all connected to the positive terminal of the battery pack 211 through the switch group 213, and the negative power contacts of the third, fourth, fifth, and sixth relays are all connected to the negative terminal of the battery pack 211. The switch group 213 is equipped with a first position switch and a second position switch. The second position switch is used to connect the battery pack 211 to each relay in the second relay group, and the first position switch is used to connect the battery pack 211 to each relay in the first relay group.

[0050] It should be noted that the embodiments of this application do not limit the form of the switch group. In some embodiments, multiple independent push-button switches can be provided, and different buttons can be used to connect / disconnect the positive power contacts of each relay in the first relay group with the battery pack 211, or to connect / disconnect the positive power contacts of each relay in the second relay group with the battery pack 211. In other embodiments, a multi-position switch can also be provided, and a multi-position switch can be used to determine whether the positive power contacts of each relay in the first relay group are connected / disconnected with the battery pack 211, or whether the positive power contacts of each relay in the second relay group are connected / disconnected with the battery pack 211.

[0051] Understandably, the power conversion module 215 is used to output a voltage different from the input voltage based on the input voltage. In some embodiments, the power conversion module 215 can be configured as a power interface, which can connect to an external integrated circuit, such as a boost circuit board. In other embodiments, the power conversion module 215 itself has a voltage conversion function, which can realize the conversion of the input voltage. For example, the power conversion module 215 can be configured as a power conversion circuit, which may include a boost circuit, a buck circuit, or a buck-boost circuit, etc., thereby enabling the output voltage to be different from the input voltage based on the input voltage. Therefore, the embodiments of this application do not limit the specific structure of the power conversion module 215, and those skilled in the art can selectively configure it according to the scenario.

[0052] Therefore, the switch group 213, the second relay group and the power conversion module 215 can enable a single power supply device to provide a variety of different voltages, thereby increasing the combination of voltage and power supply in series or parallel connection, and further expanding the applicability of the power supply device.

[0053] For example, such as Figure 2 As shown, the third, fourth, fifth, and sixth relays are K3, K4, K5, and K6, respectively. Taking the power conversion module 215 as a boost circuit as an example, the input and output contacts of K3 and K4 are connected to the positive terminal of the battery pack 211 and the voltage input terminal of the boost circuit, respectively. The two output terminals of the boost circuit are connected to the input contacts of K5 and K6, respectively. The output contacts of K5 and K6 are connected to D4 and D3, respectively. When the second position switch is in the closed state, the input and output contacts of K3 and K4 are closed, thus providing voltage input to the boost circuit, which in turn causes K5 to output voltages within different ranges.

[0054] Understandably, the power supply circuit 210 also includes a filter module 212, which is located between the switch group 213 and the battery pack 211. The filter module 212 is used to filter the current output by the battery pack 211.

[0055] It should be noted that the composition of the filter module 212 is not limited in this application embodiment. By adding the filter module 212, the current spikes generated when the battery pack is supplied with low voltage can be filtered, making the power supply of the power device more stable.

[0056] Understandably, the power supply unit is also equipped with a first emergency stop switch, which is used to disconnect each relay in the first relay group from the battery pack 211.

[0057] It should be noted that by setting a first emergency stop switch, the battery pack's power supply can be stopped when the first emergency stop switch is pressed. This improves the safety of the power supply device.

[0058] For example, such as Figure 2 As shown, the first emergency stop switch is set to S1, which is located between the filter module and the input contact of the first relay. Furthermore, the first emergency stop switch S1 is also connected to the input contacts of the third and fourth relays.

[0059] Understandably, the power supply unit is also equipped with a second emergency stop switch, which is used to disconnect each relay in the second relay group from the battery pack 211.

[0060] It should be noted that by setting a second emergency stop switch, the power conversion module can be stopped from supplying power when the second emergency stop switch is pressed, thereby improving the safety of the unit device.

[0061] For example, such as Figure 2 As shown, the second emergency stop switch is set to S2, which is located between the filter module and the input contact of the fifth relay K5.

[0062] Understandably, such as Figure 2 As shown, the power supply device also includes a display screen 214, the positive power input terminal of the display screen 214 is connected to the output terminal of the switch group 213, and the negative power input terminal of the display screen 214 is connected to the negative terminal of the battery pack 211.

[0063] It should be noted that the operating status of the power supply device can be displayed by setting the display screen 214.

[0064] This application embodiment does not limit the specific display content of the display screen 214, and those skilled in the art can selectively set it according to actual needs.

[0065] Understandably, the power supply device also includes a third diode and a fourth diode. The two ends of the third diode are connected to the first gear switch and the display screen 214, respectively, and the two ends of the fourth diode are connected to the second gear switch and the display screen 214, respectively.

[0066] For example, such as Figure 2 As shown, the third diode is D1 and the fourth diode is D2. By using different diodes when switching between different positions, the display screen 214 can further identify the current power supply, thereby improving the ease of use.

[0067] It is understood that the embodiments of this application do not limit the type of the third diode and the fourth diode; they can both be set as power diodes or other ordinary diodes.

[0068] Understandably, in some embodiments, a fuse is also provided between the filter module and the first relay, and between the filter module and the fifth relay.

[0069] The above is a detailed description of the preferred embodiments of this application. However, this application is not limited to the above embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of this application. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A power supply device, characterized in that, The power supply device includes: The housing has a positive terminal and a negative terminal. Power supply circuit; A series-parallel protection circuit includes a first diode and a second diode. The anode of the first diode is connected to the positive output terminal of the power supply circuit. The cathode of the first diode is electrically connected to the cathode and the positive terminal of the second diode. The anode of the second diode is electrically connected to the negative output terminal and the negative terminal of the power supply circuit. The power supply circuit and the series-parallel protection circuit are both encapsulated within the housing.

2. The power supply device according to claim 1, characterized in that, The power supply circuit includes a battery pack and a first relay group. The first relay group includes a first relay and a second relay. The positive terminal of the battery pack is electrically connected to the positive power contacts of both the first and second relays. The negative terminal of the battery pack is electrically connected to the negative power contacts of both the first and second relays. The positive terminal of the battery pack is also connected to the input contact of the first relay. The output contact of the first relay serves as the positive output terminal and is connected to the positive terminal of the first diode. The input contact of the second relay is connected to the negative terminal of the battery pack. The output contact of the second relay serves as the negative output terminal and is connected to the positive terminal of the second diode.

3. The power supply device according to claim 2, characterized in that, A switch assembly is provided on the housing; the power circuit further includes a second relay assembly and a power conversion module. The second relay assembly includes a third, fourth, fifth, and sixth relay. The input contacts of the third and fourth relays are connected to the battery pack. The output contacts of the third and fourth relays are respectively connected to the two input terminals of the power conversion module. The two output terminals of the power conversion module are respectively connected to the input contacts of the fifth and sixth relays. The output contacts of the fifth and sixth relays serve as the positive and negative output terminals, respectively. The positive power contacts of the third, fourth, fifth, and sixth relays are all connected to the positive terminal of the battery pack through the switch assembly, and the negative power contacts of the third, fourth, fifth, and sixth relays are all connected to the negative terminal of the battery pack. The switch assembly is equipped with a first position switch and a second position switch. The second position switch is used to connect the battery pack to each relay in the second relay assembly; the first position switch is used to connect the battery pack to each relay in the first relay assembly.

4. The power supply device according to claim 3, characterized in that, The power supply circuit also includes a filtering module located between the switch group and the battery pack, which is used to filter the current output by the battery pack.

5. The power supply device according to claim 2, characterized in that, The power supply device is also provided with a first emergency stop switch, which is used to disconnect each relay in the first relay group from the battery pack.

6. The power supply device according to claim 3, characterized in that, The power supply device is also provided with a second emergency stop switch, which is used to disconnect each relay in the second relay group from the battery pack.

7. The power supply device according to claim 3, characterized in that, The power supply device also includes a display screen, the positive power input terminal of which is connected to the output terminal of the switch group, and the negative power input terminal of which is connected to the negative terminal of the battery pack.

8. The power supply device according to claim 7, characterized in that, The power supply device further includes a third diode and a fourth diode. The two ends of the third diode are respectively connected to the first gear switch and the display screen, and the two ends of the fourth diode are respectively connected to the second gear switch and the display screen.

9. A power supply system, characterized in that, The power system includes a plurality of power devices as described in any one of claims 1 to 8, wherein the positive terminals of the plurality of power devices are interconnected and the negative terminals of the plurality of power devices are interconnected.

10. A power supply system, characterized in that, The power system includes a plurality of power devices as described in any one of claims 1 to 8, wherein the plurality of power devices are connected in series in sequence through the corresponding positive terminal and the negative terminal.

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