Communication interface switching device, protection board and electric equipment

Abstract

The utility model provides a switching device of a communication interface, a protection board and electric equipment. The switching device comprises a first connector; a second connector; a third connector; and the adjusting mechanism comprises a first connecting part, a second connecting part and a third connecting part which are communicated with one another and are respectively connected with the first connector, the second connector and the third connector. Through connection between the connector and the adjusting mechanism, design adjustment of different battery management systems is carried out according to actual battery requirements and different inverters, meanwhile, integrated design of the battery management systems can be guaranteed, additional auxiliary devices such as an adapter plate do not need to be additionally arranged, the production and processing cost is greatly reduced, the production and processing time is greatly shortened, and the production efficiency is improved. And meanwhile, the adaptive morning reading and management and control flexibility between the battery and the communication structure is also remarkably improved, and compared with existing conventional settings, the application has the remarkable advantages of flexibility in use, high compatibility, wide application range, convenience in production and processing and the like, and has a wide use prospect in the industry.

Description

Technical Field

[0001] The utility model relates to the technical field of electric power equipment, in particular to a switching device of a communication interface, a protection board and electric equipment. Background Art

[0002] As energy crisis and environmental problems become increasingly serious, the use of renewable energy becomes more and more important. As an important part of renewable energy, home energy storage system can effectively store clean energy and meet the power demand of households when there is no sunshine or insufficient wind. As a common home energy storage solution, low-voltage home storage battery pack is mainly composed of battery cell module, protection board (BMS), shell, wiring harness and other parts. Its rated voltage is usually 48V, which is suitable for small households or equipment that uses electricity alone.

[0003] The battery management system (BMS) is a core component in low-voltage home storage battery packs. It is mainly responsible for monitoring and managing the working status of the battery pack to ensure safe and efficient operation of the battery. BMS is usually composed of an analog front end (AFE), a microcontroller (MCU), a power module, a communication module, temperature acquisition, a MOS tube drive circuit, and other functional modules. Its main functions include: single-cell voltage acquisition and overcharge / over-discharge protection, cell total voltage acquisition, input / output port voltage acquisition, cell temperature acquisition, overcurrent, short circuit protection, fault storage, etc.

[0004] However, in actual application, low-voltage home storage battery packs need to be used in conjunction with inverters. There are many inverter manufacturers on the market. Although they basically use the standard RJ45 connector as the communication interface, the communication methods used are not uniform. For example, the inverter of manufacturer A may use CAN communication as the communication method, while the inverter of manufacturer B may use RS485 as the communication method with the battery pack. In addition, the interface definitions of each manufacturer may also be different. In this case, in order to match different inverter manufacturers, BMS with the same function often needs to produce multiple versions, which not only wastes a lot of time and resources, but also brings many inconveniences to production management and later maintenance.

[0005] In addition, since the BMS of conventional low-voltage home storage batteries directly integrates various interfaces on the BMS, and the network cables are usually standard products, they are easy to confuse even if customized, which makes it difficult to achieve unification and standardization. Therefore, how to design a low-voltage home storage battery BMS with good compatibility, easy production and management has become an urgent problem in the current field.

[0006] In order to solve the above problems, the present invention provides a new low-voltage home storage battery BMS design solution, which disconnects the communication signal from the RJ45 interface and uses a connector to connect, thereby realizing the unification and standardization of low-voltage home storage battery BMS, improving production efficiency, reducing production costs, and facilitating later maintenance and management. This design can not only meet the communication requirements of inverters from different manufacturers, but also simplify the production process, reduce production errors, and improve product reliability and stability. Summary of the invention

[0007] To this end, the technical problem to be solved by the utility model is to overcome the problems of low flexibility and difficulty in standardized production in the existing technology of low-voltage home storage battery packs and inverters, and to provide a communication interface switching device, protection board and electrical equipment.

[0008] To solve the above technical problems, the utility model provides a switching device for a communication interface, which includes: a first connector, on which at least one first differential pair and at least one second differential pair are provided; a second connector, wherein the second connector includes a first transmission pin group, and the first transmission pin group is externally connected to a first communication interface or a second communication interface, wherein the first communication interface matches the first differential pair, and the second communication interface matches the second differential pair; a third connector, wherein the third connector includes a second transmission pin group and a third transmission pin group, and the second transmission pin group and the third transmission pin group are respectively connected to two communication interfaces; an adjustment mechanism, wherein the adjustment mechanism includes a first connection part, a second connection part and a third connection part which are interconnected, wherein the first connection part is connected to the first differential pair or the second differential pair, the second connection part is connected to the first transmission pin group, and the third connection part is connected to the second transmission pin group and the third transmission pin group.

[0009] In one embodiment of the present invention, the first connector is a BMS-PCS connector, the second connector is a C_PCS connector, and the third connector is a C_INNER connector.

[0010] In one embodiment of the present invention, the first differential pair is an RS485 differential pair, the second differential pair is a CAN differential pair, the first communication interface is an RS485 communication interface, and the second communication interface is a CAN communication interface.

[0011] In one embodiment of the present invention, the first connector is a single-row connector on which a plurality of pins are evenly spaced and connected.

[0012] In one embodiment of the present invention, the second connector is a 2×4 double-row connector, and the third connector is a 2×8 double-row connector.

[0013] In an embodiment of the present invention, on at least one of the first connector, the second connector and the third connector, the spacing distance between two adjacent pins is not less than 2.0 mm.

[0014] In an embodiment of the present invention, a plurality of pins are evenly spaced and connected to the third connector, and the pins are divided into two groups with the same number to respectively connect to the two communication interfaces.

[0015] In one embodiment of the present invention, the adjustment mechanism includes a housing and a plurality of wires, and the housing is sleeved outside the plurality of wires.

[0016] The utility model provides a protection board, which comprises the switching device of the above-mentioned communication interface.

[0017] The utility model provides an electrical equipment, which comprises the switching device of the above-mentioned communication interface.

[0018] The above technical solution of the utility model has the following advantages compared with the prior art:

[0019] The switching device, protection board and electrical equipment of the communication interface described in the utility model can design and adjust different battery management systems (BMS) according to different inverters based on actual battery needs through the connection settings between multiple connectors and adjustment mechanisms, while also ensuring the integrated design of the BMS. Not only is there no need to add additional auxiliary devices such as additional adapter boards, which greatly reduces the production and processing costs and time, but also significantly improves the flexibility of adaptation and control between batteries and communication structures. Compared with existing conventional settings, the present application has the significant advantages of flexible use, strong compatibility, wide application range and easy production and processing, and has broad application prospects in this industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to make the content of the utility model more clearly understood, the utility model is further described in detail below based on specific embodiments of the utility model in combination with the accompanying drawings.

[0021] Figure 1 It is a structural schematic diagram of a switching device of a communication interface in a preferred embodiment of the utility model;

[0022] Figure 2 yes Figure 1 A schematic diagram of the structure of the first connector;

[0023] Figure 3 yes Figure 1 A schematic diagram of the structure of the second connector and the third connector.

[0024] Explanation of the reference numerals in the specification: 100, first connector; 200, second connector; 300, third connector; 400, adjustment mechanism; 410, first connecting portion; 420, second connecting portion; 430, third connecting portion. DETAILED DESCRIPTION

[0025] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0026] Embodiment 1

[0027] See also Figures 1 to 3 As shown, this embodiment provides a switching device for a communication interface, which includes: a first connector 100, on which at least one first differential pair and at least one second differential pair are provided; a second connector 200, wherein the second connector 200 includes a first transmission pin group, and the first transmission pin group is externally connected to a first communication interface or a second communication interface, wherein the first communication interface matches the first differential pair, and the second communication interface matches the second differential pair; a third connector 300, wherein the third connector 300 includes a second transmission pin group and a third transmission pin group, and the second transmission pin group and the third transmission pin group are respectively connected to two communication interfaces; an adjustment mechanism 400, wherein the adjustment mechanism 400 includes a first connection portion 410, a second connection portion 420 and a third connection portion 430 which are interconnected, wherein the first connection portion 410 is connected to the first differential pair or the second differential pair, the second connection portion 420 is connected to the first transmission pin group, and the third connection portion 430 is connected to the second transmission pin group and the third transmission pin group.

[0028] The switching device of the communication interface described in this embodiment, through the connection setting between multiple connectors and the adjustment mechanism 400, can design and adjust different battery management systems (BMS) according to different inverters based on actual battery needs, while also ensuring the integrated design of the BMS. Not only does it not need to add additional auxiliary devices such as additional adapter plates, it greatly reduces the production and processing costs and time, but it also significantly improves the flexibility of adaptation and control between the battery and the communication structure. Compared with the existing conventional settings, the present application has the significant advantages of flexible use, strong compatibility, wide application range and easy production and processing, and has broad application prospects in this industry.

[0029] See also Figure 2As shown, the first connector 100 in this embodiment is a BMS-PCS connector, the first differential pair provided thereon is an RS485 differential pair, and the second differential pair is a CAN differential pair, thereby enabling the present application to switch between RS485 protocol transmission and CAN protocol transmission. Further, the first connector 100 is a single-row connector, on which 8 pins are evenly spaced and connected, wherein pins 1 and 2 are RS485 pins, pins 3 to 8 are CAN pins, and the spacing between two adjacent pins is 2.0 mm, thereby effectively preventing the undesired electrical connection (short circuit) caused by the similar electrical characteristics of adjacent pins while reducing signal interference and attenuation, maintaining signal integrity and overall miniaturization of components.

[0030] See also Figure 3 As shown, the second connector 200 in this embodiment is a C-PCS connector, the first communication interface is an RS485 communication interface, and the second communication interface is a CAN communication interface, so that it can cooperate with the first connector 100 for switching. Further, the second connector 200 is a 2×4 double-row connector, on which 8 pins are arranged at intervals, and the interval distance between two adjacent pins is 2.0 mm.

[0031] See also Figure 3 As shown, the third connector 300 in this embodiment is a C-INNER connector. Specifically, the third connector 300 is a 2×8 double-row connector, and the spacing distance between two adjacent pins is 2.0 mm. In this embodiment, a plurality of pins are evenly spaced and connected to the third connector 300, and the pins are divided into two groups of the same number to respectively connect to the two communication interfaces. Specifically, pins 1 to 8 are used to connect one communication interface, and pins 9 to 16 are used to connect another communication interface.

[0032] In this embodiment, the inverter to be adapted is an RS485 inverter. At this time, it is only necessary to connect pins 1 and 2 of the first connector 100 with pins 1 and 2 of the second connector 200, and to connect pins 5, 7, 6, and 8 of the first connector 100 with pins 1, 2, 9, and 10 of the third connector 300. If the inverter needs to be replaced with a CAN inverter at this time, it is necessary to connect pins 3 and 4 of the first connector 100 with pins 1 and 2 of the second connector 200, and to connect pins 5, 7, 6, and 8 of the first connector 100 with pins 1, 2, 9, and 10 of the third connector 300, thereby achieving a switching operation. Based on this, the present application can freely adjust the inverter adapted to the corresponding battery pack according to actual use requirements.

[0033] See also Figure 1As shown, the adjusting mechanism 400 includes a shell and a plurality of wires, and the shell is sleeved on the outside of the plurality of wires, thereby ensuring the safety of use while protecting the internal wires, so as to extend the service life of the adjusting mechanism 400.

[0034] Embodiment 2

[0035] This embodiment is applicable to the situation where the communication of multiple groups of batteries needs to be connected in parallel to the inverter, and the inverter is an RS485 inverter, wherein the specific structures and types of the first connector 100, the second connector 200, the third connector 300 and the adjustment mechanism 400 are the same as those in the first embodiment, and no further details are given here. In this embodiment, in order to realize the communication of multiple groups of batteries in parallel to the same inverter, it is necessary to connect pins 1 and 2 in the first connector 100 with pins 3 and 5 of the second connector 200, and at the same time connect pins 3 and 5 of the second connector 200 with pins 3 and 5 of the third connector 300, and then connect pins 3 and 5 of the third connector 300 to pins 11 and 13 thereof, and finally connect pins 5, 7, 6, and 8 in the first connector 100 with pins 1, 2, 9, and 10 of the third connector 300.

[0036] Similarly, in other embodiments, regardless of the interface definition of the inverter, the connection between the battery pack and the inverter can be achieved by changing the specific wiring harness connection method.

[0037] Embodiment 3

[0038] This embodiment provides a protection board, which includes the switching device of the communication interface described in the first embodiment.

[0039] Embodiment 4

[0040] This embodiment provides an electrical device, which includes the switching device of the communication interface described in the first embodiment.

[0041] In summary, the switching device, protection board and electrical equipment of the communication interface described in the utility model, through the connection settings between multiple connectors and the adjustment mechanism 400, can design and adjust different battery management systems (BMS) according to different inverters based on actual battery needs, while also ensuring the integrated design of the BMS. Not only is there no need to add additional auxiliary devices such as additional adapter boards, which greatly reduces the production and processing costs and time, but also significantly improves the flexibility of adaptation and control between batteries and communication structures. Compared with existing conventional settings, the present application has significant advantages such as flexible use, strong compatibility, wide application range and easy production and processing, and has broad application prospects in this industry.

[0042] Obviously, the above embodiments are merely examples for the purpose of clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from these are still within the scope of protection of the invention of the utility model.

Claims

1. A switching device for a communication interface, characterized in that: include: A first connector, wherein at least one first differential pair and at least one second differential pair are provided on the first connector; A second connector, wherein the second connector includes a first transmission pin group, the first transmission pin group is externally connected to a first communication interface or a second communication interface, wherein the first communication interface matches the first differential pair, and the second communication interface matches the second differential pair; A third connector, the third connector comprising a second transmission pin group and a third transmission pin group, and the second transmission pin group and the third transmission pin group are respectively connected to two communication interfaces; An adjustment mechanism, the adjustment mechanism includes a first connection part, a second connection part and a third connection part which are interconnected, wherein the first connection part connects the first differential pair or the second differential pair, the second connection part connects the first transmission pin group, and the third connection part connects the second transmission pin group and the third transmission pin group.

2. The communication interface switching device according to claim 1, characterized in that: The first connector is a BMS-PCS connector, the second connector is a C_PCS connector, and the third connector is a C_INNER connector.

3. The switching device of the communication interface according to claim 1, characterized in that: The first differential pair is an RS485 differential pair, the second differential pair is a CAN differential pair, the first communication interface is an RS485 communication interface, and the second communication interface is a CAN communication interface.

4. The switching device of the communication interface according to claim 1, characterized in that: The first connector is a single-row connector on which a plurality of pins are evenly spaced and connected.

5. The switching device of the communication interface according to claim 1, characterized in that: The second connector is a 2×4 double-row connector, and the third connector is a 2×8 double-row connector.

6. The switching device of the communication interface according to claim 1, characterized in that: On at least one of the first connector, the second connector, and the third connector, a spacing distance between two adjacent pins is not less than 2.0 mm.

7. The communication interface switching device according to claim 1, characterized in that: The third connector is connected to a plurality of pins at even intervals, and the pins are divided into two groups with the same number to respectively connect to the two communication interfaces.

8. The communication interface switching device according to claim 1, characterized in that: The adjusting mechanism comprises a shell and a plurality of wires, wherein the shell is sleeved outside the plurality of wires.

9. A protective plate, characterized in that: A switching device comprising the communication interface as claimed in any one of claims 1 to 8.

10. An electrical equipment, characterized in that: A switching device comprising the communication interface as claimed in any one of claims 1 to 8.

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