Industrial mobile power supply

Abstract

The utility model provides an industrial mobile power supply, which comprises a shell with an opening, an end cover capable of being used for sealing the shell, a control unit, a plurality of battery packs, a circuit board I, a plurality of battery packs and a shell with an opening I, the plurality of battery packs are arranged in the shell, and each of the plurality of battery packs is provided with a battery pack accommodating cavity for accommodating a battery pack and at least one circuit board accommodating cavity; one side, adjacent to the plurality of battery packs, of the circuit board I is arranged at the opening of the shell; a charging and discharging switch element is arranged on the circuit board I; a battery pack and a bridge circuit unit are arranged in the battery pack; each battery pack is connected to the outside of the battery pack through a bridge circuit unit arranged in the battery pack, and the control unit can be used for controlling an electronic switch in the bridge circuit unit; and the battery pack consists of a plurality of battery cells with connected electrodes. The industrial mobile power supply is more convenient to disassemble and assemble, and the system coordination management difficulty is lower.

Description

Technical Field

[0001] This utility model relates to the field of energy storage, and more specifically, to an industrial mobile power supply. Background Technology

[0002] Industrial mobile power supplies refer to battery systems with cascaded multilevel inverter topologies. These systems are potentially used in industries requiring stable AC power, such as construction, maintenance and installation services, and mobile catering. In existing technologies, these battery systems typically include multiple power modules, each containing only a small number of batteries. This results in a large number of power modules, each requiring at least one circuit board. Consequently, the entire battery system suffers from drawbacks such as numerous series-connected battery modules, many interfaces, long wiring, complex assembly, complex system management, and high design costs. Furthermore, it fails to provide the shortest path for communication and power circuits, leading to significant losses and an increased number of potential failure points. Utility Model Content

[0003] The purpose of this utility model is to provide an industrial mobile power supply that is easier to assemble and disassemble, and easier to coordinate and manage as a system.

[0004] The embodiments of this utility model can be implemented as follows:

[0005] This utility model provides an industrial portable power supply, including a housing with an opening, an end cap for sealing the housing, a control unit, and multiple battery packs. The industrial portable power supply also includes a circuit board I, multiple battery packs, and a housing with an opening I. The multiple battery packs are arranged inside the housing, and each battery pack has a battery pack receiving cavity for accommodating a battery pack and at least one circuit board receiving cavity. The circuit board I is located at the opening of the housing on one side adjacent to the multiple battery packs. A charge / discharge switch element is arranged on the circuit board I. A battery pack and a bridge circuit unit are arranged inside the battery pack. Each battery pack is connected to the outside of the battery pack through the bridge circuit unit arranged inside its battery pack, which can realize series connection with other battery packs. The control unit can be used to control the opening and closing of the electronic switch in the bridge circuit unit. The battery pack is composed of multiple cells with electrodes connected.

[0006] In an optional embodiment, a load-bearing plate I is provided between circuit board I and multiple battery packs; the load-bearing plate I is connected to the housing; the housing also has an opening II on the side opposite to opening I, and a load-bearing plate II is provided at opening II; both load-bearing plate I and load-bearing plate II are respectively connected to the housing.

[0007] In an optional embodiment, the load-bearing plate II is provided with a through hole, and the battery pack is provided with a heat dissipation device, which can at least partially protrude from the through hole.

[0008] In an optional embodiment, the battery pack includes a battery pack housing; the battery pack housing includes a bracket I and a bracket II, both of which have holes to expose the terminals of the battery cells, and the bracket I and bracket II are connected to form the battery pack housing.

[0009] In an optional embodiment, the battery pack includes a circuit board II receiving cavity shell for forming a circuit board II receiving cavity; the battery pack receiving cavity shell is connected to a top cover to form a circuit board II receiving cavity shell, on which a bridge circuit is arranged.

[0010] In an optional embodiment, both bracket I and bracket II are provided with a protective cover on the side away from the battery cell. Both bracket I and bracket II are respectively connected to the protective cover to form a circuit board III receiving cavity and a circuit board IV receiving cavity. Acquisition circuits are arranged on circuit board III and circuit board IV.

[0011] In an optional embodiment, the battery pack includes a top cover and a circuit board II receiving cavity shell for forming a circuit board II receiving cavity; a protective cover is connected to the top cover to form the circuit board II receiving cavity shell, and a bridge circuit is arranged on the circuit board II.

[0012] In an optional implementation, the filtering circuit and control unit are integrated on circuit board I, and circuit board II also integrates a battery protection unit. Circuit board I and circuit board II are connected by signals.

[0013] In an optional embodiment, the end cap is provided with a plug interface for charging and / or discharging.

[0014] In an optional embodiment, the end cap includes end cap I and end cap II disposed opposite to each other; both end cap I and end cap II are provided with connecting portions on their edges, the connecting portions of end cap I and end cap II extend toward each other, and the connecting portions of end cap I and end cap II are connected by a connector so that end cap I, end cap II and connector together form an outer protective layer.

[0015] The beneficial effects of the industrial mobile power supply provided by this utility model embodiment include: fewer and shorter connecting wires between batteries, lower cost, better heat dissipation, easier disassembly and assembly, reduced product failure rate and system coordination and management difficulty, and the provision of the shortest path for communication circuits and power circuits, reducing losses and the existence of fault points. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the internal components of a battery pack according to an embodiment of this utility model;

[0018] Figure 2 A schematic diagram of the internal structure of an industrial mobile power supply according to an embodiment of this utility model;

[0019] Figure 3 A schematic diagram of the end cap structure of an industrial mobile power supply according to an embodiment of this utility model.

[0020] Explanation of reference numerals in the attached drawings: 1. Battery pack; 2. Circuit board I; 3. Load-bearing plate I; 4. Load-bearing plate II; 5. Housing; 6. Heat dissipation device; 7. Bracket I; 8. Bracket II; 9. Cell limiting groove; 10. Connector; 11. Top cover; 12. Circuit board II; 13. Circuit board III; 14. Circuit board IV; 15. Protective cover; 16. End cover I; 17. End cover II; 18. Insertion interface; 19. Battery pack. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments 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 some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0023] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0024] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0025] Furthermore, the terms "first" and "second" are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance. The connections described and protected herein do not imply that there are no other components between them and that they are directly connected. They may also be indirectly connected through other intermediate components.

[0026] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other. The main protection point of this utility model lies in the structural layout rather than the circuit design, and the circuits set on the circuit board in the embodiments can be replaced according to the actual situation.

[0027] Please refer to Figures 1-3 This utility model provides an industrial portable power supply, including a housing 5 with an opening, an end cap for sealing the housing 5, a control unit, and multiple battery packs 1. The industrial portable power supply also includes a circuit board I2, multiple battery packs 1, and a housing 5 with an opening I. The multiple battery packs 1 are arranged inside the housing 5, and each of the multiple battery packs 1 has a battery pack receiving cavity for accommodating a battery group 19 and at least one circuit board receiving cavity. The circuit board I2 is located adjacent to one side of the multiple battery packs 1 (which can be understood as one side of the battery pack after the multiple battery packs are combined to form a battery pack group) on the opening of the housing 5. At the port; a charge / discharge switch element is arranged on circuit board I2; a battery pack 1 contains a battery group 19 and a bridge circuit unit; each battery group 19 is connected to the outside of the battery pack 1 through the bridge circuit unit inside its battery pack 1, enabling series connection with other battery groups 19 (just as in the topology of a cascaded multilevel inverter circuit, multiple inverter bridges are connected in series, thus allowing each battery group to be connected in series through the series-connected inverter bridges); the control unit can be used to control the opening and closing of the electronic switch in the bridge circuit unit; the battery group consists of multiple cells with electrodes connected. Through this structural design, product assembly is more convenient and circuit loss is reduced.

[0028] The battery pack 1 described above contains a battery group 19. This can be understood as meaning that there is no completely sealed structure or isolation layer between the cell structures in the battery pack 1. Even if there is a certain distance between the cells, they are still considered as a battery group.

[0029] The aforementioned battery packs 19 are connected in series and then electrically connected to the external circuit via a charge / discharge switch element on circuit board I2. The charge / discharge switch element can be a relay or other electronic component with switching function, used to control the conduction and disconnection of the power line during charging and discharging. There can be one charge / discharge switch element, which is closed during both charging and discharging. Preferably, there are two charge / discharge switch elements, one as a charging switch element and the other as a discharging switch element.

[0030] It should be noted that the signal connection described in this utility model includes electrical signal connection, communication signal connection, etc.; the "cavity" protected by this utility model refers to a structure with spatial characteristics, as long as it can achieve the load-bearing function, and its sealing degree is not limited. Regarding the connection of multiple battery cell electrodes, the use of connectors 10 such as nickel strips to connect the battery cell electrodes has become a mature technology in this field, and will not be elaborated or limited here; the setting position of the control unit and the bridge circuit unit does not affect the realization of the purpose of this utility model. The control unit and the bridge circuit unit can be integrated on the same circuit board or distributed in different positions; at the same time, the specific circuits set on the circuit board in the battery pack 1 can also be adjusted according to requirements.

[0031] Furthermore, a load-bearing plate I3 is provided between the circuit board I2 and the multiple battery packs 1; the load-bearing plate I3 is connected to the housing 5; the housing 5 also has an opening II on the side opposite to the opening I, and a load-bearing plate II4 is provided at the opening II. Both the load-bearing plate I3 and the load-bearing plate II4 are connected to the housing 5. The stacking of the multiple battery packs 1 is not limited here; they can be arranged in a row or closely arranged between each battery pack 1. In one usage scenario, the circuit board I2 is located above the multiple battery packs 1, and the weight of the circuit board I2 will be borne by the load-bearing plate I3, and not at all or only partially borne by the battery packs 1, greatly improving the service life of the battery packs 1. Secondly, the setting of the load-bearing plate II4 allows the bottom of the battery packs 1 to be supported. At the same time, the combination of the load-bearing plate I3 and the load-bearing plate II4 can play a limiting role, so that the battery packs 1 will not fall out of the opening even if a limiting part is not provided on the housing 5. The connection method between the load-bearing plate and the shell 5 is not limited here. It can be a threaded connection, welding, or a design in which a certain load-bearing plate and the shell 5 are integrally formed.

[0032] Furthermore, the load-bearing plate II4 is provided with through holes, and the battery pack 1 is provided with a heat dissipation device 6, which can at least partially protrude through the through holes. In one embodiment, the heat dissipation device 6 is a fan, and the fan mounting base is fixed to the battery pack 1 by bolts. The size of the through hole on the load-bearing plate II4 corresponds to the size of the fan mounting base. After the load-bearing plate II4 is installed, part of the volume of the fan base will protrude through the load-bearing plate II4, and the fan will act as an air intake, blowing external cold air into the battery pack 1. Correspondingly, the load-bearing plate I3 and the battery pack 1 are provided with corresponding heat dissipation holes to achieve air cooling circulation.

[0033] Furthermore, the battery pack 1 includes a battery pack receiving cavity shell; the battery pack receiving cavity shell includes a bracket I 7 and a bracket II 8, both of which have holes to expose the electrode terminals of the battery cells. The bracket I 7 and bracket II 8 are connected to form the battery pack receiving cavity shell. The battery pack 1 receiving cavity shell is used to form the receiving cavity of the battery pack 1. The connection between the two brackets can be a direct connection between them through threads, snap-fit, etc., or it can be an indirect connection between the two brackets by having other parts in between, and both brackets are connected to these other parts. In one embodiment, the brackets I 7 and II 8 are provided with battery cell limiting grooves 9 to firmly fix the battery cells in the receiving cavity of the battery pack 1, while the electrodes of the battery pack 1 are exposed from the brackets for subsequent installation of connectors 10 such as nickel sheets. Preferably, the connectors 10 also protrude outward to form a connection end, so as to transmit the battery cell status to the acquisition circuit, reducing the wiring harness.

[0034] Furthermore, the battery pack 1 includes a top cover 11 and a circuit board II 12 receiving cavity shell for forming a receiving cavity for the circuit board II 12. The battery pack receiving cavity shell is connected to the top cover 11 to form the circuit board II 12 receiving cavity shell, and a bridge circuit is arranged on the circuit board II 12. As the two most important parts of the power system, the battery pack and the bridge circuit, by arranging the bridge circuit in the battery pack 1, can minimize the line distance between the battery pack 1 and the bridge circuit, reducing the probability of failure during signal transmission. In one embodiment, the circuit board II 12 is fixedly connected to the top of the battery pack receiving cavity shell by bolts. The two side edges of the top cover 11 extend downward to engage with the battery pack receiving cavity shell for protection, while the other two sides do not extend to form open sides for leading out the connecting wires.

[0035] Furthermore, both bracket I7 and bracket II8 have protective covers 15 on the side away from the battery cell (i.e., the outer side). Bracket I7 and bracket II8 are respectively joined with the protective cover 15 to form the receiving cavity for circuit board III13 and circuit board IV14. Data acquisition circuits are arranged on circuit boards III13 and IV14. These circuits can be used to collect data such as temperature, charge, and current of the battery cells in the battery pack 19. In one embodiment, the edges of bracket I7 and bracket II8 extend outwards to form receiving grooves, allowing the circuit board to be placed entirely within the grooves. The circuit board can then be fixedly installed by bolt connection. The protective cover 15 serves to protect against impacts and water. In another embodiment, the aforementioned receiving cavity shell for circuit board II12 is formed by connecting the protective cover 15 and the top cover 11.

[0036] Furthermore, the filtering circuit and control unit are integrated on circuit board I2, while circuit board II12 also integrates a battery protection unit (also known as a battery management unit). Circuit board I2 and circuit board II12 are connected by signals. Since battery protection requires obtaining signals from the acquisition circuit first, placing the battery protection unit inside the battery pack 1 greatly shortens the connection between the battery protection unit and the acquisition circuit, enhancing signal anti-interference capability. The integration of the filtering circuit, control unit, and control unit makes the entire industrial mobile power bank more compact and occupies less space.

[0037] It should be noted that the "integration on circuit board I2 or circuit board II12" described in this utility model does not require that the two or more parts of the circuit being integrated are on the same board surface. Alternatively, the two parts of the circuit can be on two different board surfaces, and then the two board surfaces can be spliced ​​together for integration.

[0038] Furthermore, the end cover is provided with a plug interface 18, which can be used to exchange electrical energy with other power facilities or electrical equipment. The number and form of the plug interface 18 can be set according to the power supply size and actual usage requirements.

[0039] In one embodiment, during charging, electrical energy first flows to circuit board I2 through connector 18, is filtered, and then flows to circuit board II12 in each battery pack 1. After rectification by the bridge circuit, it flows into the battery pack 19. During discharging, electrical energy first flows from battery pack 19 to circuit board II12, is inverted by the bridge circuit, flows to circuit board I2, and finally flows to the outside through connector 18. The aforementioned rectification process can also be achieved by a rectifier circuit on another circuit board (e.g., placing the rectifier circuit on circuit board I or adding a new circuit board according to the structural layout) instead of using the bridge circuit on circuit board II12. Here, only the entire working process is illustrated as an example. Throughout the process, the battery protection unit continuously extracts signals transmitted by the acquisition circuit and transmits these signals to the control unit and the battery protection unit. The control unit controls the opening and closing of the charging / discharging switching elements and the switching elements in each bridge circuit. The battery protection unit is configured to generate a shutdown control signal in response to a detected fault. It can be formed by transistors or logic gate circuits, or it can be a microcontroller, etc.

[0040] Furthermore, the end caps include end cap I 16 and end cap II 17 disposed opposite to each other; both end cap I 16 and end cap II 17 have connecting portions on their edges, the connecting portions of end cap I 16 and end cap II 17 extend towards each other, and the connecting portions of end cap I 16 and end cap II 17 are connected by a connector (not shown in the figure) so that end cap I 16, end cap II 17, and the connector together form an outer protective layer. Preferably, connecting portions are provided at all four edges of the end caps, and the connecting portions of the two end caps are connected by four tubular members, which not only provide protection but also serve as a handheld part for users to hold the industrial power bank.

[0041] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.

Claims

1. An industrial mobile power supply, comprising a housing with an opening, an end cap for sealing the housing, a control unit, and multiple battery packs. Its features are: The industrial mobile power supply also includes a circuit board I, multiple battery packs, and a housing with an opening I; The plurality of battery packs are arranged inside the housing, and each of the plurality of battery packs has a battery pack receiving cavity for accommodating a battery pack and at least one circuit board receiving cavity. The circuit board I is located at the opening of the housing, adjacent to one side of the multiple battery packs; a charge / discharge switch element is arranged on the circuit board I; a battery group and a bridge circuit unit are arranged inside the battery pack. The battery pack is connected to the outside of the battery pack through a bridge circuit unit set inside the battery pack, which can realize series connection with other battery packs. The control unit can be used to control the opening and closing of electronic switches in the bridge circuit unit; The battery pack consists of multiple cells connected by electrodes.

2. The industrial mobile power source of claim 1, wherein: A load-bearing plate I is provided between the circuit board I and the multiple battery packs; the load-bearing plate I is connected to the housing. The shell also has an opening II on the opposite side of opening I, and a load-bearing plate II is provided at opening II. Both the load-bearing plate I and the load-bearing plate II are connected to the shell.

3. The industrial mobile power source of claim 2, wherein: The load-bearing plate II is provided with a through hole, and the battery pack is provided with a heat dissipation device, which can at least partially protrude from the through hole.

4. The industrial mobile power source of claim 1, wherein: The battery pack includes a battery pack housing; The battery pack housing includes a bracket I and a bracket II. Both bracket I and bracket II have holes to expose the terminals of the battery cells. The bracket I and bracket II are connected to form the battery pack housing.

5. The industrial mobile power source of claim 4, wherein: The battery pack includes a top cover and a circuit board II receiving cavity shell for forming a circuit board II receiving cavity; The battery pack housing is connected to the top cover to form a circuit board II housing, on which a bridge circuit is arranged.

6. The industrial mobile power source of claim 4, wherein: Both bracket I and bracket II have protective covers on the side away from the battery cell. Both bracket I and bracket II are respectively connected to the protective covers to form a circuit board III receiving cavity and a circuit board IV receiving cavity. The circuit board III and circuit board IV are equipped with acquisition circuits.

7. The industrial mobile power source of claim 6, wherein: The battery pack includes a top cover and a circuit board II receiving cavity shell for forming a circuit board II receiving cavity; The protective cover is connected to the top cover to form a cavity housing for circuit board II, on which a bridge circuit is arranged.

8. The industrial power source of claim 5 or 7, wherein: The filtering circuit and the control unit are integrated on circuit board I, and circuit board II also integrates a battery protection unit. Circuit board I and circuit board II are connected by signals.

9. The industrial mobile power source of claim 1, wherein: The end cap is provided with a plug interface for charging and / or discharging.

10. The industrial mobile power source of claim 1, wherein: The end caps include end cap I and end cap II, which are disposed opposite to each other; Both end cap I and end cap II have connecting portions on their edges. The connecting portions of end cap I and end cap II extend towards each other, and the connecting portions of end cap I and end cap II are connected by a connector so that end cap I, end cap II, and connector together form an external protective layer.

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