Low-voltage communication line structure and system for a high-voltage tank

Abstract

The utility model provides a kind of low pressure communication line structure and system of high pressure box belongs to new energy battery field.The structure includes high pressure box, low pressure communication connector and connecting cable, low pressure communication connector is provided with two, respectively located the two sides of high pressure box, slave is provided in high pressure box, connecting cable is set in high pressure box, connecting cable includes first connection main line and connecting slave wire, the two ends of first connection main line are communicated with two low pressure communication connectors respectively, one end of connecting slave wire is communicated with first connection main line, and the other end is communicated with slave control.Using the low pressure communication line structure and system of high pressure box provided in the utility model embodiment, the problem that high pressure box panel is shielded and external cable is messy in prior art can be solved.

Description

Technical Field

[0001] This utility model relates to the field of new energy batteries, and in particular to a low-voltage communication line structure and system for a high-voltage box. Background Technology

[0002] In the field of large energy storage containers, the internal structure adopts a multi-cluster parallel scheme. Each cluster is equipped with a high-voltage box. The high-voltage power and communication signals of the battery boxes in the cluster are transmitted to the combiner cabinet for unified management through the high-voltage box. The high-voltage boxes of each cluster are arranged in a unified parallel manner, and the high-voltage boxes communicate, collect, control and transmit data through the main control.

[0003] In the existing technology, the existing combiner cabinet is equipped with a master controller, and the high-voltage box is equipped with a slave controller. A communication harness connects the master controller and the slave controller in each high-voltage box. A communication connector is set on the front panel of the high-voltage box. The communication connector maintains a line connection with the slave controller. The master controller realizes power supply and communication to the slave controller through the low-voltage communication connector. The wiring path of the low-voltage communication harness is located on the front panel of the high-voltage box. A sheet metal bracket is designed on the panel. Cooling water pipes are arranged between the high-voltage boxes. The low-voltage communication harness is fixed to the sheet metal bracket and the cooling water pipe with cable ties.

[0004] The existing low-voltage communication line structure places the communication connector on the front panel of the high-voltage box and fixes the cable to the sheet metal bracket and cooling water pipe of the high-voltage box panel. This results in a large number of cables passing through the high-voltage box panel, which obstructs other components on the high-voltage box panel and exposes a large number of cables on the outside of the high-voltage box, resulting in messy external cables. Utility Model Content

[0005] This utility model provides a low-voltage communication line structure and system for a high-voltage box, which solves the problems of obstructed high-voltage box panels and messy external cables in the prior art. The technical solution is as follows: In a first aspect, a low-voltage communication line structure for a high-voltage box includes: a high-voltage box body, a low-voltage communication connector, and a connecting cable. Two low-voltage communication connectors are provided, located on both sides of the high-voltage enclosure. A slave controller is provided inside the high-voltage enclosure. The connection cable is provided inside the high-voltage enclosure. The connection cable includes a first main connection line and a slave connection line. The two ends of the first main connection line are respectively connected to the two low-voltage communication connectors. One end of the slave connection line is connected to the first main connection line, and the other end is connected to the slave controller.

[0006] Optionally, a plug is provided at the end of the first connecting main line, and a socket is provided on the side of the low-voltage communication connector near the first connecting main line, and the plug is inserted into the socket.

[0007] Optionally, a sliding groove arranged along the length direction is provided on the side wall of the high-voltage enclosure, and the low-voltage communication connector is slidably disposed in the sliding groove.

[0008] Optionally, the outer side wall of the low-voltage communication connector is provided with two flanges, the two flanges are arranged at intervals, the side wall of the high-voltage housing is located between the two flanges, and the width of the flange is greater than the width of the groove.

[0009] Optionally, a first mounting hole is provided on the flange, and a plurality of second mounting holes matching the first mounting hole are provided on one side of the slide groove, with the plurality of second mounting holes arranged at intervals along the direction of the slide groove.

[0010] Optionally, a wire clamp is provided inside the high-voltage box to fix the connecting wire inside the high-voltage box.

[0011] Secondly, a low-voltage communication line system for a high-voltage box includes multiple low-voltage communication line structures of the aforementioned high-voltage boxes, and also includes a main control and multiple second connecting main lines. The second connecting main lines are disposed on the outside of the high-voltage box body, and both ends of the second connecting main lines are respectively connected to the low-voltage communication connectors of the low-voltage communication line structures of the two high-voltage boxes. The main control is connected to the second connecting main lines.

[0012] Optionally, it also includes a slide rail, which is laterally arranged on the back side of the high-voltage housing, and the high-voltage housing is slidably mounted on the slide rail.

[0013] The beneficial effects of the technical solution provided by this utility model embodiment include at least the following: This utility model provides a low-voltage communication line structure and system for a high-voltage box. By placing low-voltage communication connectors on both sides of the high-voltage box and placing the first main connection line inside the high-voltage box, when connecting signals from multiple high-voltage boxes, most of the cables are located inside the high-voltage box, thus preventing the cables from obstructing the panel of the high-voltage box and reducing the number of cables located outside the high-voltage box. This effectively solves the problems of obstructed high-voltage box panels and messy external cables in the prior art. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure provided in an embodiment of the present utility model; Figure 2 This is a schematic diagram of the high-voltage box sidewall structure provided in an embodiment of the present invention; Figure 3 This is a side view schematic diagram of the low-voltage communication connector provided in this embodiment of the utility model; Figure 4 This is a schematic diagram of the main view of the low-voltage communication connector provided in this embodiment of the utility model; Figure 5 This is a front view schematic diagram of the first connecting main line provided in an embodiment of this utility model; Figure 6 This is a schematic diagram of the system structure provided in an embodiment of the present utility model.

[0016] In the diagram: 1-High voltage enclosure; 11-Slide rail; 12-Second mounting hole; 2-Low voltage communication connector; 21-Socket; 22-Flange; 221-First mounting hole; 3-Connecting cable; 31-First main connecting line; 311-Plug; 32-Slave connecting line; 4-Slave control; 5-Wire clamp; 6-Master control; 7-Second main connecting line; 8-Slide rail. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0018] Figure 1 This is a schematic diagram of the overall structure provided in an embodiment of the present utility model; Figure 2 This is a schematic diagram of the high-voltage box sidewall structure provided in an embodiment of the present invention; Figure 3 This is a side view schematic diagram of the low-voltage communication connector provided in this embodiment of the utility model; Figure 4 This is a schematic diagram of the main view of the low-voltage communication connector provided in this embodiment of the utility model; Figure 5 This is a front view schematic diagram of the first connecting main line provided in an embodiment of this utility model; Figure 6 This is a schematic diagram of the system structure provided in an embodiment of this utility model. (See attached diagram.) Figures 1 to 6 The low-voltage communication line structure of a high-voltage box shown includes: a high-voltage box body 1, a low-voltage communication connector 2, and a connecting cable 3. Two low-voltage communication connectors 2 are provided, located on both sides of the high-voltage box body 1 respectively. A slave controller 4 is provided inside the high-voltage box body 1. The connecting cable 3 is provided inside the high-voltage box body 1. The connecting cable 3 includes a first connecting main line 31 and a connecting slave line 32. The two ends of the first connecting main line 31 are respectively connected to the two low-voltage communication connectors 2. One end of the connecting slave line 32 is connected to the first connecting main line 31, and the other end is connected to the slave controller 4.

[0019] For example, in this embodiment of the present invention, the slave controller 4 is a battery cell management unit (BMU), which is the lowest level in the battery management system (BMS) and is directly connected to a single battery module or battery cell. The main responsibility of the BMU is to monitor and manage the individual battery cells in real time to ensure the health status of each battery cell and prevent any situation that may cause battery damage. Multiple slave controllers 4 are provided in the high-voltage enclosure 1. Each slave controller 4 is connected to a battery on a battery cluster rack to monitor the batteries on that cluster rack. The number of slave controllers 4 is set in the high-voltage enclosure 1 according to the actual use, so that each high-voltage enclosure 1 can control the batteries on multiple battery cluster racks. The slave controllers 4 are connected to the first main connection line 31 via a connecting slave line 32. The first main connection line 31 is connected to an external signal via a low-voltage communication connector 2. After connecting the low-voltage communication connectors 2 of multiple high-voltage enclosures 1 through cables outside the high-voltage enclosure 1, the slave controllers 4 in multiple high-voltage enclosures 1 can be connected in series. After being connected to the main control 6 through cables, a low-voltage communication line system can be formed. In this embodiment, by embedding the first main connecting line 31 inside the high-voltage enclosure 1, the number of connectors on the front panel of the high-voltage enclosure is reduced, the arrangement is more reasonable, and the overall appearance is clean and tidy. The traditional front panel fixing bracket for the high-voltage enclosure is eliminated, and the reduced wire harness length improves overall installation efficiency. Furthermore, placing a large number of communication wire harnesses inside the high-voltage enclosure 1 reduces the likelihood of damage to the communication wire harnesses caused by squeezing or scratching during installation.

[0020] This utility model provides a low-voltage communication line structure and system for a high-voltage box. By placing the low-voltage communication connector 2 on both sides of the high-voltage box 1 and placing the first main connection line 31 inside the high-voltage box 1, when multiple high-voltage boxes 1 are connected for signal connection, most of the cables are located inside the high-voltage box 1, so that the cables do not block the panel of the high-voltage box 1, reducing the number of cables located outside the high-voltage box 1, and effectively solving the problems of high-voltage box panel obstruction and messy external cables in the prior art.

[0021] Optionally, a plug 311 is provided at the end of the first connecting main line 31, and a socket 21 is provided on the side of the low-voltage communication connector 2 near the first connecting main line 31, and the plug 311 is plugged into the socket 21.

[0022] Exemplary, in embodiments of this utility model, such as Figures 3 to 5 As shown, the first main connecting line 31 and the low-voltage communication connector 2 are connected by plug 311 and socket 21, making the first main connecting line 31 and the low-voltage communication connector 2 detachably connected. This facilitates the replacement of either the first main connecting line 31 or the low-voltage communication connector 2, thereby improving the ease of operation of this structure. When a component is damaged, only a portion of the component needs to be replaced to ensure the normal operation of the overall structure, thus extending the service life of this structure.

[0023] Optionally, a slide groove 11 arranged along the length direction is provided on the side wall of the high-voltage enclosure 1, and the low-voltage communication connector 2 is slidably disposed in the slide groove 11.

[0024] For example, in this embodiment of the present invention, as shown in Figure 2, when the slave controller 4 changes its installation position according to the distribution of other components in the high-voltage box 1, it may cause the connecting cable 3 to be insufficient in length. By setting the slide groove 11, the low-voltage communication connector 2 can slide in the slide groove 11, thereby changing the position of the low-voltage communication connector 2 according to the position of the slave controller 4, so that the position of the slave controller 4 in the high-voltage box 1 is more flexible and more convenient when assembling the high-voltage box.

[0025] Optionally, the outer side wall of the low-voltage communication connector 2 is provided with two flanges 22, which are arranged at intervals. The side wall of the high-voltage housing 1 is located between the two flanges 22, and the width of the flanges 22 is greater than the width of the groove 11.

[0026] Exemplary, in embodiments of this utility model, such as Figure 4 As shown, by setting two flanges 22 to clamp the side wall of the high voltage box 1, a guiding force can be provided for the low voltage communication connector 2 to slide along the slide groove 11, and the low voltage communication connector 2 can be prevented from falling out of the slide groove 11 during the sliding process, thereby improving the sliding stability of the low voltage communication connector 2.

[0027] Optionally, a first mounting hole 221 is provided on the flange 22, and a plurality of second mounting holes 12 matching the first mounting hole 221 are provided on one side of the slide groove 11, with the plurality of second mounting holes 12 arranged at intervals along the direction of the slide groove 11.

[0028] Exemplary, in embodiments of this utility model, such as Figure 2 and Figure 3 As shown, after the low-voltage communication connector 2 is adjusted into place, it is fixed by bolts or pins passing through the first mounting hole 221 and the second mounting hole 12. This allows the low-voltage communication connector 2 to be fixed on the slide groove 11, thereby preventing the low-voltage communication connector 2 from sliding due to accidents during normal operation of the high-voltage box, thus improving the structural stability of this structure.

[0029] Optionally, a wire clamp 5 is provided inside the high-voltage enclosure 1, which is used to fix the connecting wire 32 inside the high-voltage enclosure.

[0030] Exemplary, in embodiments of this utility model, such as Figure 1 As shown, by setting the wire clamp 5, the connecting wire 32 can be fixed inside the high-voltage box 1, preventing the connecting wire 32 from getting tangled with other components inside the high-voltage box 1, thereby improving the operational stability of this structure.

[0031] A low-voltage communication line system for a high-voltage box includes multiple low-voltage communication line structures of the aforementioned high-voltage boxes, and also includes a main control 6 and multiple second connecting main lines 7. The second connecting main lines 7 are disposed on the outside of the high-voltage box body 1, and the two ends of the second connecting main lines 7 are respectively connected to the low-voltage communication connectors 2 of the low-voltage communication line structures of the two high-voltage boxes. The main control 6 is connected to the second connecting main lines 7.

[0032] Exemplary, in embodiments of this utility model, such as Figure 6 As shown, the main control unit 6 is the Battery Array Management Unit (BAU), which is the highest level in the Battery Management System (BMS). It is responsible for the centralized management and coordination of the batteries in the entire energy storage power station, ensuring the safe and reliable operation of the battery system under various operating conditions. After connecting the low-voltage communication lines of multiple high-voltage boxes in series via the second connecting main line 7, the main control unit 6 is then connected to the second connecting main line 7. This allows the main control unit 6 to connect with the slave control units 4 within the low-voltage communication line structures of multiple high-voltage boxes, thereby enabling data transmission from the slave control units 4 to the main control unit 6 and control of the slave control units 4 by the main control unit 6.

[0033] Optionally, it also includes a slide rail 8, which is arranged laterally on the back side of the high-voltage box 1, and the high-voltage box 1 is slidably mounted on the slide rail 8.

[0034] Exemplary, in embodiments of this utility model, such as Figure 6 As shown, by setting the slide rail 8, the relative positions of the low-voltage communication line structures of multiple high-voltage boxes can be adjusted. When this system is installed in a large energy storage container, the position of the low-voltage communication line structure of the high-voltage box can be adjusted according to the layout inside the energy storage container, thereby improving the space utilization rate inside the energy storage container.

[0035] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains. The terms “first,” “second,” and similar terms used in this patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “an” or “a” and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms “comprising” or “including” and similar terms mean that the elements or objects preceding “comprising” or “including” encompass the elements or objects listed following “comprising” or “including” and their equivalents, and do not exclude other elements or objects. The terms “connected” or “linked” and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms “upper,” “lower,” “left,” and “right” are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0036] The above description is only an optional embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A low-voltage communication line structure for a high-voltage box, characterized in that, include: High voltage enclosure (1), low voltage communication connector (2) and connecting cable (3). Two low-voltage communication connectors (2) are provided, located on both sides of the high-voltage enclosure (1). A slave controller (4) is provided inside the high-voltage enclosure (1). The connecting cable (3) is provided inside the high-voltage enclosure (1). The connecting cable (3) includes a first main connecting line (31) and a slave connecting line (32). The two ends of the first main connecting line (31) are respectively connected to the two low-voltage communication connectors (2). One end of the slave connecting line (32) is connected to the first main connecting line (31), and the other end is connected to the slave controller (4).

2. The low-voltage communication line structure of a high-voltage box according to claim 1, characterized in that, The first connecting main line (31) is provided with a plug (311) at its end, and the low-voltage communication connector (2) is provided with a socket (21) on the side near the first connecting main line (31), and the plug (311) is plugged into the socket (21).

3. The low-voltage communication line structure of a high-voltage box according to claim 1, characterized in that, The high-voltage enclosure (1) has a sliding groove (11) arranged along its length on its side wall, and the low-voltage communication connector (2) is slidably disposed in the sliding groove (11).

4. The low-voltage communication line structure of a high-voltage box according to claim 3, characterized in that, The low-voltage communication connector (2) has two flanges (22) on its outer side wall. The two flanges (22) are arranged at intervals. The side wall of the high-voltage box (1) is located between the two flanges (22). The width of the flanges (22) is greater than the width of the groove (11).

5. The low-voltage communication line structure of a high-voltage box according to claim 4, characterized in that, The flange (22) is provided with a first mounting hole (221), and a plurality of second mounting holes (12) matching the first mounting hole (221) are provided on one side of the slide groove (11). The plurality of second mounting holes (12) are arranged at intervals along the direction of the slide groove (11).

6. The low-voltage communication line structure of a high-voltage box according to claim 1, characterized in that, A wire clamp (5) is provided inside the high-voltage box (1), and the wire clamp (5) is used to fix the connecting wire (32) inside the high-voltage box.

7. A low-voltage communication line system for a high-voltage box, comprising a plurality of low-voltage communication line structures for the high-voltage box as described in any one of claims 1 to 6, characterized in that, It also includes a main control (6) and multiple second main connection lines (7). The second main connection lines (7) are located outside the high-voltage box (1). The two ends of the second main connection lines (7) are respectively connected to the low-voltage communication connectors (2) of the low-voltage communication line structure of the two high-voltage boxes. The main control (6) is connected to the second main connection lines (7).

8. A low-voltage communication line system for a high-voltage box according to claim 7, characterized in that, It also includes a slide rail (8), which is arranged laterally on the back side of the high-voltage box (1), and the high-voltage box (1) is slidably mounted on the slide rail (8).

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