A high-power power supply with electromagnetic interference resistance

Abstract

This utility model relates to a high-power power supply with electromagnetic interference resistance. The structure includes: a lower cover plate; an upper cover plate bolted to the lower cover plate; battery cells and a battery pack installed inside the lower cover plate; a relay connected to the lower cover plate on one side of the battery pack; both the lower and upper cover plates are made of aluminum alloy; a clamp is installed on the battery pack; the upper cover plate is brought close to the lower cover plate and bolted together by installing the lower cover plate, upper cover plate, clamp, relay, and battery pack; the lower and upper cover plates are separate aluminum alloy metal shells, facilitating quick installation and fixation; the shell design combines lightweight and modularity; the U-shaped clamp facilitates fixing the battery pack to the inner wall of the lower cover plate; a 500A continuous current relay controls the positive output circuit of the battery pack; the relay is controlled by an external 28V 200mA power signal to achieve circuit conduction and disconnection.

Description

Technical Field

[0001] This utility model relates to the field of power supply equipment technology, and in particular to a high-power power supply that is resistant to electromagnetic interference. Background Technology

[0002] As loads place increasingly higher demands on power supply, low-voltage, low-power loads currently rely on electrical energy generated by engines. However, with the increasing functionality and power consumption of loads, engine power supply can no longer meet the power supply requirements of existing equipment. Moreover, the greater the power, the more significant the disturbance to the engine power supply caused when connected to the engine power supply system. Using an independent power supply can effectively solve the power supply problem for such loads. Traditional power supplies are heavy and bulky, making them inconvenient to carry and disassemble.

[0003] Therefore, to address the above problems, a new high-power power supply with electromagnetic interference resistance is proposed. Utility Model Content

[0004] To overcome the problems existing in related technologies, this utility model provides a high-power power supply that is resistant to electromagnetic interference. It can adopt a split aluminum alloy metal shell, which is easy to install and fix quickly. The shell design takes into account both lightweight and modularity and supports quick disassembly. A handle structure is added to the top, which significantly improves the overall portability of the battery pack.

[0005] To achieve the above objectives, the first aspect of this utility model provides a high-power power supply with electromagnetic interference resistance, comprising:

[0006] Lower cover plate;

[0007] The lower cover plate is bolted to the upper cover plate. The battery cells are installed inside the lower cover plate, and the battery pack is installed inside the lower cover plate. A relay connected to the lower cover plate is located on one side of the battery pack. Both the lower cover plate and the upper cover plate are made of aluminum alloy, and the battery pack is equipped with a hoop.

[0008] Furthermore, the relay uses a 500A continuous current to control the positive output circuit of the battery pack, and the relay is controlled by an external 28V 200mA power supply signal to switch on and off.

[0009] Furthermore, the relay is connected to a main negative output line that is connected to the battery pack, and a main positive output line that is connected to the relay is provided on one side of the main negative output line, while the other side of the main positive output line is connected to the battery pack.

[0010] Furthermore, an NTC line is installed inside the upper cover plate, and a voltage distribution line located inside the upper cover plate is provided below the NTC line. A total negative connection BMS line located inside the lower cover plate is provided on one side of the voltage distribution line.

[0011] Furthermore, the upper surface of the relay is connected to a positive power supply terminal that is connected to the battery pack, and a negative power supply terminal that is connected to the upper surface of the relay is provided on one side of the positive power supply terminal, while the other side of the negative power supply terminal is connected to the battery pack.

[0012] Furthermore, a front panel is fixedly connected to one side of the lower cover and one side of the upper cover, and a rear panel is fixedly connected to the other side of the lower cover and the other side of the upper cover. Connecting strips are symmetrically fixedly connected to the inner wall of the upper cover, and the connecting strips are in contact with the surface of the hoop. A BMS module is provided between the hoop and the battery pack.

[0013] Furthermore, a handle is fixedly connected to the upper surface of the cover plate.

[0014] The technical solution provided by this utility model can include the following beneficial effects:

[0015] In this example, the upper cover, upper cover, hoop, relay, and battery pack are installed. The upper cover is placed close to the lower cover and connected by bolts. The lower and upper covers are separate aluminum alloy metal shells, which facilitates quick installation and fixation. The shell design takes into account both lightweight and modularity. The U-shaped hoop design makes it easy to fix the battery pack to the inner wall of the lower cover. A relay with a continuous current of 500A is used to control the positive output circuit of the battery pack. The relay is controlled by an external 28V 200mA power signal to realize the circuit conduction and disconnection.

[0016] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit the present invention. Attached Figure Description

[0017] The above and other objects, features and advantages of the present invention will become more apparent from the accompanying drawings, in which like reference numerals generally represent like parts.

[0018] Figure 1 This is a triaxial view of the external structure shown in the embodiment of this utility model;

[0019] Figure 2 This is a left view of the present invention after the outer shell has been removed, as shown in an embodiment of the present invention;

[0020] Figure 3 This is a front view of the present invention after the outer shell has been removed, as shown in an embodiment of the present invention;

[0021] Figure 4 This is a top view of the present invention after the top cover has been removed, as shown in an embodiment of the present invention;

[0022] Figure 5 This is a discharge curve diagram shown in an embodiment of the present invention.

[0023] The correspondence between the labels and component names in the attached figures is as follows:

[0024] 1. Lower cover; 2. Upper cover; 3. Front panel; 4. Hoop; 5. NTC cable; 6. Voltage distribution cable; 7. Main negative connection to BMS line; 8. Relay; 9. Main negative output line; 10. Power supply positive terminal; 11. Power supply negative terminal; 12. Connecting strip; 13. BMS module; 14. Battery pack; 15. Rear panel; 16. Handle; 17. Main positive output line. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model. The preferred embodiments of this utility model will now be described in more detail with reference to the accompanying drawings. Although the preferred embodiments of this utility model are shown in the drawings, it should be understood that this utility model can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make this utility model more thorough and complete, and to fully convey the scope of this utility model to those skilled in the art.

[0026] The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular forms “a,” “the,” and “the” used in this invention and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0027] It should be understood that although the terms "first," "second," "third," etc., may be used in this invention to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this invention, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Thus, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0028] Designing a high-power power supply that is resistant to electromagnetic interference is currently the primary technical problem that engineers need to solve.

[0029] To address the aforementioned issues, this utility model provides a high-power power supply with electromagnetic interference resistance. This structure can adopt a split aluminum alloy metal shell, which facilitates quick installation and fixation. The shell design takes into account both lightweight and modularity, and supports quick disassembly. A handle structure is added to the top, which significantly improves the overall portability of the battery pack.

[0030] The technical solution of the present invention (Embodiment 1) is described in detail below with reference to the accompanying drawings.

[0031] Figure 1 This is a triaxial view of the external structure shown in the embodiment of this utility model; Figure 2 This is a left view of the present invention after the outer shell has been removed, as shown in an embodiment of the present invention; Figure 3 This is a front view of the present invention after the outer shell has been removed, as shown in an embodiment of the present invention; Figure 4 This is a top view of the present invention after the top cover has been removed, as shown in an embodiment of the present invention; Figure 5 This is a discharge curve diagram shown in an embodiment of the present invention.

[0032] See Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 The high-power power supply with electromagnetic interference resistance specifically includes: a lower cover plate 1;

[0033] The lower cover plate 1 is bolted to the upper cover plate 2. The lower cover plate 1 contains battery cells. The battery cells are polymer semi-solid lithium-ion cells with a specific energy of 270Wh / kg, a single cell capacity of 30Ah, an internal resistance of 1.0±0.5mΩ, and a weight of 415±5g. The battery cells are connected in parallel by an ultrasonic metal welding process. The lower cover plate 1 contains a battery pack 14. The parallel battery cell modules are combined into two 4-string modules in series. They are connected in series by an 8# silicone wire to form an 8-string battery pack 14. Three NTC temperature probes are embedded inside. A relay 8 connected to the lower cover plate 1 is provided on one side of the battery pack 14. Both the lower cover plate 1 and the upper cover plate 2 are made of aluminum alloy. A hoop 4 with a U-shaped design is installed on the battery pack 14.

[0034] Specifically, the relay 8 uses a 500A continuous current to control the positive output circuit of the battery pack 14, and the relay 8 is controlled by an external 28V 200mA power supply signal to switch on and off.

[0035] Specifically, the relay 8 is connected to a total negative output line 9 connected to the battery pack 14. One side of the total negative output line 9 is provided with a total positive output line 17 connected to the relay 8. The other side of the total positive output line 17 is connected to the battery pack 14. The total positive output line 17 uses specific specification silver-plated wire for both positive and negative terminals as power lines, with the positive terminal consisting of 16 strands of red silver-plated wire (AFR250-0.5mm). 2 The wire length is 800mm; the total negative output line 9 uses 16 strands of black silver-plated wire (AFR250-0.5mm) for the negative electrode. 2 The cable is 800mm long and the internal wiring does not cross.

[0036] Specifically, an NTC line 5 is installed inside the upper cover plate 2. The NTC line 5 is connected to an NTC temperature probe. Below the NTC line 5, there is a voltage distribution line 6 located inside the upper cover plate 2. On one side of the voltage distribution line 6, there is a total negative connection BMS line 7 located inside the lower cover plate 1. The voltage distribution line 6 and the total negative connection BMS line 7 are connected to the lithium battery management system.

[0037] Specifically, the upper surface of the relay 8 is connected to a positive power supply 10 connected to the battery pack 14, and a negative power supply 11 connected to the upper surface of the relay 8 is provided on one side of the positive power supply 10. The other side of the negative power supply 11 is connected to the battery pack 14.

[0038] Specifically, a front panel 3 is fixedly connected to one side of the lower cover plate 1 and one side of the upper cover plate 2. A cable outlet is provided on the front panel 3. A rear panel 15 is fixedly connected to the other side of the lower cover plate 1 and the other side of the upper cover plate 2. A connecting strip 12 is symmetrically fixedly connected to the inner wall of the upper cover plate 2. The connecting strip 12 is in contact with the surface of the hoop 4. A BMS module 13 is provided between the hoop 4 and the battery pack 14.

[0039] Specifically, a handle 16 is fixedly connected to the upper surface of the upper cover plate 2.

[0040] In this embodiment, how to make the power supply have electromagnetic interference effects, combined with Figures 1 to 4 The specific implementation method is as follows: the upper cover plate 2 is close to the lower cover plate 1 and connected by bolts. The lower cover plate 1 and the upper cover plate 2 are split aluminum alloy metal shells, and the structure is convenient for quick installation and fixation. The shell design takes into account both lightweight and modularity. The U-shaped hoop 4 makes it easy to fix the battery pack 14 to the inner wall of the lower cover plate 1. The positive output circuit of the battery pack 14 is controlled by a relay 8 with a continuous current of 500A. The relay 8 is turned on and off by an external 28V 200mA power signal to realize the circuit conduction and disconnection.

[0041] In this embodiment, how to improve the performance of the power supply, combined with Figures 1 to 4The specific implementation method is as follows: The battery cell adopts a polymer semi-solid lithium-ion battery cell with a specific energy of 270Wh / kg and a single cell capacity of 30Ah, an internal resistance of 1.0±0.5mΩ, and a weight of 415±5g. It meets the requirements of 5C~7C high-rate continuous discharge and 10C pulse discharge, thus improving battery performance. The welding process adopts an ultrasonic metal welding process to connect 3 cells in parallel, reducing the weight increase problem caused by the PCB connection board in traditional soldering. In addition, the direct welding of the cell tabs shortens the current path and reduces heat accumulation. To address the heat generation issue, four parallel cell modules are combined in series to form two 4-cell modules. These are then connected in series via an 8# silicone wire to form an 8-cell battery pack 14. Three NTC temperature probes are embedded inside to detect cell temperature. The voltage of each cell is output, and a voltage line 6 connects to the lithium battery management system (BMS). The BMS software board monitors and manages the voltage, current, and temperature of the battery pack 14. The main positive output line 17 uses specific specification silver-plated positive and negative wires as power lines. The positive electrode uses 16 strands of red silver-plated wire (AFR250-0.5mm). 2 Shanghai Shenyuan, cable length 800mm; total negative output line 9, 16 strands of black silver-plated wire, AFR250-0.5mm. 2 Shanghai Shenyuan uses 800mm long wires with non-crossing internal wiring to reduce electromagnetic interference.

[0042] In this embodiment, how to improve the accessibility of the upper surface of the upper cover plate 2, combined with... Figure 1 The specific implementation method is as follows: a handle 16 is added to the upper surface of the upper cover plate 2 to facilitate handling and carrying, which is very convenient when moving the power supply.

[0043] The present invention has been described in detail above with reference to the accompanying drawings. In the above embodiments, the descriptions of each embodiment have different focuses; for parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments. Those skilled in the art should also understand that the actions and modules involved in the specification are not necessarily essential to the present invention. Furthermore, it is understood that the steps in the method of the present invention embodiments can be adjusted, combined, and deleted according to actual needs, and the structure in the device of the present invention embodiments can be combined, divided, and deleted according to actual needs.

[0044] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A high power supply source against electromagnetic interference, characterized by, include: Lower cover plate (1); The lower cover plate (1) is bolted to the upper cover plate (2). The lower cover plate (1) contains battery cells and a battery pack (14). A relay (8) connected to the lower cover plate (1) is provided on one side of the battery pack (14). Both the lower cover plate (1) and the upper cover plate (2) are made of aluminum alloy. A hoop (4) is installed on the battery pack (14).

2. The high-power power supply with electromagnetic interference resistance according to claim 1, characterized in that: The relay (8) uses a 500A continuous current to control the positive output circuit of the battery pack (14), and the relay (8) is controlled by an external 28V 200mA power supply signal.

3. The high-power power supply with electromagnetic interference resistance according to claim 1, characterized in that: The relay (8) is connected to a total negative output line (9) that is connected to the battery pack (14). One side of the total negative output line (9) is provided with a total positive output line (17) that is connected to the relay (8), and the other side of the total positive output line (17) is connected to the battery pack (14).

4. The high-power power supply with electromagnetic interference resistance according to claim 1, characterized in that: The upper cover plate (2) is equipped with an NTC line (5), and a voltage distribution line (6) located inside the upper cover plate (2) is provided below the NTC line (5). A total negative connection BMS line (7) located inside the lower cover plate (1) is provided on one side of the voltage distribution line (6).

5. The high-power power supply with electromagnetic interference resistance according to claim 3, characterized in that: The upper surface of the relay (8) is connected to a positive power supply terminal (10) that is connected to the battery pack (14). One side of the positive power supply terminal (10) is provided with a negative power supply terminal (11) that is connected to the upper surface of the relay (8). The other side of the negative power supply terminal (11) is connected to the battery pack (14).

6. The high-power power supply with electromagnetic interference resistance according to claim 4, characterized in that: A front panel (3) is fixedly connected to one side of the lower cover plate (1) and one side of the upper cover plate (2). A rear panel (15) is fixedly connected to the other side of the lower cover plate (1) and the other side of the upper cover plate (2). A connecting strip (12) is symmetrically fixedly connected to the inner wall of the upper cover plate (2). The connecting strip (12) is in contact with the surface of the hoop (4). A BMS module (13) is provided between the hoop (4) and the battery pack (14).

7. The high-power power supply with electromagnetic interference resistance according to claim 6, characterized in that: A handle (16) is fixedly connected to the upper surface of the cover plate (2).

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