Circuit board, distribution box, battery pack, electric equipment and vehicle

Abstract

The utility model relates to the technical field of batteries, and provides a circuit board, a distribution box, a battery pack, electric equipment and a vehicle, the circuit board comprises a board body, a plug connector and a buckle connecting piece are arranged on the board body, and at least one of the plug connector and the buckle connecting piece is used for realizing electric connection between the circuit board and a battery information collector assembly. The structure of the circuit board can be simplified, the cost of the circuit board is reduced, the space ratio of the circuit board in the distribution box is reduced, and assembly of the circuit board in the distribution box is simplified.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to a circuit board, a distribution box, a battery pack, electrical equipment, and a vehicle. Background Technology

[0002] In integrated circuit board structures, there are numerous connectors and complex wiring harnesses, resulting in a complex overall circuit board structure, high cost, and a large number of expensive wiring harnesses. The circuit board also occupies a lot of space in the distribution box and is not easy to assemble in the distribution box. Utility Model Content

[0003] This application provides a circuit board, a distribution box, a battery pack, and electrical equipment, which can simplify the structure of the circuit board, reduce the cost of the circuit board, reduce the space ratio of the circuit board in the distribution box, and simplify the assembly of the circuit board in the distribution box.

[0004] A first aspect of this application provides a circuit board, comprising:

[0005] The board body includes a plug and a snap-fit ​​connector disposed on the board body, wherein at least one of the plug and the snap-fit ​​connector is used to realize the electrical connection between the circuit board and the battery information collector assembly.

[0006] According to the circuit board described in the first aspect of this application, the connection between the circuit board and the battery information acquisition unit can be simplified by using a snap-fit ​​connector. Compared with plug-in connectors, snap-fit ​​connectors can simplify the wiring layout, save on the use of wire harnesses, and significantly reduce the number of connection nodes, thereby reducing the arrangement of wire harnesses. The connection method becomes simpler and easier to operate. The connection system formed by the entire circuit board is also easier to maintain, and the manufacturing, installation, and maintenance costs are reduced. The circuit board is more compact in structure, thus simplifying the circuit board, reducing its cost, reducing its space occupation in the distribution box, and simplifying its assembly in the distribution box. In addition, due to the significant reduction in wire harnesses, safety hazards caused by wire tangles and flying wires can be avoided, thereby improving the safety of the entire connection system.

[0007] In one possible implementation, the snap-fit ​​connector includes a first snap-fit ​​group for connecting a contactor.

[0008] In one possible implementation, the first latch group includes:

[0009] Main and negative contactor latch assembly, used to connect the main and negative contactor;

[0010] And / or, main positive snap-fit ​​assembly, used to connect the main positive contactor.

[0011] In one possible implementation, the main negative latch group includes a first main negative latch and a second main negative latch, and the main negative contactor is connected between the first main negative latch and the second main negative latch.

[0012] In one possible implementation, the main positive latch group includes a first main positive latch and a second main positive latch, and the main positive contactor is connected between the first main positive latch and the second main positive latch.

[0013] In one possible implementation, the first latch group further includes a precharge latch group for connecting the precharge contactor and / or the precharge drive circuit on the circuit board.

[0014] In one possible implementation, the precharge latch group includes a first precharge latch and / or a second precharge latch, the first precharge latch being connected to the precharge contactor and the second precharge latch being connected to the precharge drive circuit.

[0015] In one possible implementation, the precharge drive circuit further includes a precharge resistor connected between the first precharge latch and the second precharge latch.

[0016] In one possible implementation, the main negative buckle group, the main positive buckle group, and the precharge buckle group are arranged separately.

[0017] In one possible implementation, the first snap-fit ​​assembly is disposed in the middle region of the plate.

[0018] In one possible implementation, the snap-fit ​​connector includes a second snap-fit ​​group for connection to the busbar.

[0019] In one possible implementation, the second latching assembly includes:

[0020] Positive terminal clip, used to connect the positive terminal of the busbar to the sampling circuit on the circuit board;

[0021] And a negative terminal clip, used to connect the negative terminal of the busbar to the sampling circuit on the circuit board.

[0022] In one possible implementation, the second latching assembly further includes:

[0023] A battery pack voltage latch is used to connect the positive terminal of the battery pack to the sampling circuit.

[0024] In one possible implementation, the second snap-fit ​​assembly is disposed at the edge of the plate.

[0025] In one possible implementation, the positive end latch and the negative end latch are located on both sides of the first latch group.

[0026] In one possible implementation, the circuit board further includes:

[0027] An adapter interface, to which a splitter is adapted to connect.

[0028] In one possible implementation, the adapter interface has an orientation perpendicular to the plate.

[0029] In one possible implementation, the adapter interface is located at the edge of the plate.

[0030] In one possible implementation, the connector is disposed at the edge of the plate.

[0031] In one possible implementation, the connector includes a first connector for connecting to the battery information collector assembly.

[0032] In one possible implementation, the connector includes a second connector for connecting to the vehicle's communication system.

[0033] In one possible implementation, at least one of the first and second connectors is disposed at the edge of the plate.

[0034] A second aspect of this application provides a distribution box, comprising:

[0035] Box;

[0036] And the circuit board described in the first aspect, the circuit board being placed inside the housing.

[0037] According to the distribution box described in the second aspect of this application, the circuit board-based design can achieve the goals of simplifying the structure, controlling costs, and simplifying the assembly of the distribution box.

[0038] In one possible implementation, the circuit board is placed flat on top of the housing.

[0039] In one possible implementation, a receiving cavity is formed on the top of the housing, and a precharge contactor is connected to the board of the circuit board, the precharge contactor being housed within the receiving cavity.

[0040] In one possible implementation, the circuit board includes a shunt that is disposed perpendicular to the board body.

[0041] In one possible implementation, the distribution box further includes a contactor connected to a first latch assembly.

[0042] In one possible implementation, the circuit board includes a main negative drive circuit, a main positive drive circuit, and a pre-charge drive circuit; the contactor includes a main negative contactor, a main positive contactor, and a pre-charge contactor; the main negative drive circuit is connected to the main negative contactor; the main positive drive circuit is connected to the main positive drive circuit; and the pre-charge drive circuit is connected to the pre-charge contactor.

[0043] In one possible implementation, the precharge contactor is welded to the plate.

[0044] In one possible implementation, the plate is provided with a precharge latch assembly, and the precharge contactor is connected to the back of the plate and corresponds to the precharge latch assembly.

[0045] In one possible implementation, the plate body is provided with a main negative latch group and a main positive latch group, the main negative contactor is connected to the main negative latch group via a plug, and the main positive contactor is connected to the main positive latch group via a plug.

[0046] In one possible implementation, the board body is provided with a positive terminal latch and a negative terminal latch, the distribution box also includes a bus positive terminal and a bus negative terminal, the circuit board includes a sampling circuit, the positive terminal latch is used to connect the bus positive terminal and the sampling circuit, and the negative terminal latch is used to connect the bus negative terminal and the sampling circuit.

[0047] A third aspect of this application provides a battery pack including the aforementioned distribution box.

[0048] A fourth aspect of this application provides an electrical device including the aforementioned battery pack.

[0049] The fifth aspect of this application provides a vehicle including the aforementioned battery pack. Attached Figure Description

[0050] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0051] Figure 1 A schematic diagram of a circuit board provided according to an embodiment of this application is shown.

[0052] Figure label:

[0053] 10-Plate body; 101-First edge region; 102-Middle region; 103-Second edge region; 1031-Second sub-edge region;

[0054] 20 - Busbar; 21 - Positive end of busbar; 22 - Negative end of busbar;

[0055] 30-Splitter;

[0056] 40 - Adapter interface;

[0057] 100 - First connector;

[0058] 200 - Second connector;

[0059] 300 - First buckle group; 310 - Main negative buckle group; 320 - Main positive buckle group; 330 - Precharge buckle group; 311 - First main negative buckle; 312 - Second main negative buckle; 321 - First main positive buckle; 322 - Second main positive buckle; 331 - First precharge buckle; 332 - Second precharge buckle;

[0060] 400 - Second snap-fit ​​group; 410 - Positive terminal snap-fit; 420 - Negative terminal snap-fit; 430 - Battery pack voltage snap-fit. Detailed Implementation

[0061] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0062] As people pay more attention to new energy vehicles, battery packs, as a crucial energy supply component, are attracting increasing attention. The battery management system (BMS) of a battery pack monitors its operating status by acquiring basic state information such as energy, voltage, current, and temperature, playing a vital role in ensuring the safe use of the battery pack.

[0063] The battery management system mainly includes a battery execution and sampling unit and a battery information acquisition unit assembly. The latter mainly completes the acquisition of data from individual battery cells, while the former completes the acquisition of data from the battery pack bus. Specifically, the battery information acquisition unit assembly completes the acquisition of most of the information, which generally refers to the basic state information of the individual battery cells mentioned above. The battery information acquisition unit assembly can transmit the acquired information to the battery execution and sampling unit, which completes the acquisition of some information, mainly the acquisition of data from the bus. The battery execution and sampling unit can combine the information acquired by the battery information acquisition unit assembly with the information acquired by the battery execution and sampling unit itself to monitor the battery pack and control the relevant components.

[0064] The battery execution and sampling unit is a key component of the battery management system. It integrates various basic state information to monitor the battery pack and control related components. Currently, the battery execution and sampling unit is typically designed as an integrated circuit board structure. This circuit board structure is divided into multiple functional areas according to different functional partitions. Each functional area has a connector, and the circuit board structure is connected to various components through connectors and wiring harnesses.

[0065] Typically, the circuit board structure described above can accommodate four functional areas: the battery information acquisition unit assembly connector area, the vehicle CAN communication power supply connector area, the contactor drive area, and the bus sampling connector area. Each of these four functional areas has a connector, referred to as the first connector, second connector, third connector, and fourth connector for ease of description. The first connector is the wiring harness interface for cascading the battery execution and sampling unit with the battery information acquisition unit; the second connector is the wiring harness interface for the power supply lines of the battery execution and sampling unit and for vehicle communication interaction; the third connector is the wiring harness interface for contactor drive control, through which the positive contactor, negative contactor, pre-charge contactor, etc., are connected; and the fourth connector is the bus current sampling interface, connecting the LINK+ (bus positive terminal), LINK- (bus negative terminal), and PACK (battery pack) sampling wiring harnesses.

[0066] In the above circuit board structure, there are many connectors and a lot of complex wiring harnesses, which makes the overall circuit board structure complex and costly. The wiring harnesses are used extensively and are also costly. The circuit board occupies a lot of space in the distribution box and is not easy to assemble in the distribution box.

[0067] In response to the above-mentioned situation and problems, this application provides a circuit board with a novel architecture for the battery execution and sampling unit. The circuit board has redesigned its functional areas and reduced and replaced the connectors, which can simplify the circuit board, reduce its cost, reduce its space occupation in the distribution box, and simplify its assembly in the distribution box.

[0068] In the following embodiments of this application, it should be understood that the design concept of this application mainly lies in the upgrade of the circuit board architecture. The manufacturing process of the circuit board, the circuit design on the circuit board, and the component design of the circuit board itself can be designed with reference to existing technologies. In addition, other components connected to the circuit board, including contactors, can also be selected based on existing technologies. Therefore, to facilitate a clear and intuitive explanation of the above design concept, the embodiments of this application use the area design and layout design on the circuit board as an example for illustration. The components of the circuit board itself and other components can be selected according to relevant designs, and their structures and functions are well known and beyond doubt.

[0069] This application provides a power distribution box, which is a component of a battery pack, and the aforementioned circuit board is disposed in the power distribution box.

[0070] The distribution box may include a box body and a circuit board, with the circuit board housed inside the box body.

[0071] This distribution box, based on a circuit board design, achieves the goals of simplifying the structure, controlling costs, and simplifying the assembly of the distribution box.

[0072] In some embodiments, the circuit board is placed flat inside the enclosure and located at the top of the enclosure. Furthermore, because the circuit board is placed flat inside the enclosure, its space occupation within the distribution box can be reduced, thereby achieving the goal of reducing the size of the distribution box. It is understood that when this distribution box is used in a battery pack, it can save space in the battery pack, and can increase the battery pack capacity when the battery pack size is similar or the same.

[0073] In some embodiments, a receiving cavity is formed on the top of the housing, and a precharge contactor is connected to the board body of the circuit board, and the precharge contactor is received in the receiving cavity.

[0074] Here, the pre-charge contactor is connected to the board and housed in the receiving cavity, so that the pre-charge contactor and the circuit board can be assembled together in the distribution box, thereby simplifying the assembly process. The pre-charge contactor can be confined in the receiving cavity, which can restrict the circuit board to a certain extent on the one hand, and make full use of the top space of the distribution box on the other hand, thereby improving the space utilization rate of the distribution box.

[0075] In some embodiments, the circuit board includes a shunt that is perpendicular to the board body. Here, the shunt is set perpendicular to the board body, and the board body can be placed flat inside the box. Since the shunt can be located on the side of the distribution box, the space utilization of the distribution box can be further improved.

[0076] In some embodiments, a contactor is provided in the distribution box, and a first snap-fit ​​assembly 300 is provided on the circuit board that can be connected to the contactor.

[0077] The contactor may include a main negative contactor, a main positive contactor, and a precharge contactor. The circuit board includes a main negative drive circuit, a main positive drive circuit, and a precharge drive circuit. The main negative drive circuit is connected to the main negative contactor, the main positive drive circuit is connected to the main positive drive circuit, and the precharge drive circuit is connected to the precharge contactor.

[0078] In some embodiments, the precharge contactor can be soldered onto the board, achieving a high degree of integration of the circuit board.

[0079] In some embodiments, the plate body 10 is provided with a precharge latch group 330, and the precharge contactor is connected to the back of the plate body 10 and corresponds to the precharge latch group 330.

[0080] Setting the precharge contactor here, corresponding to the precharge latch group 330 and located on the back of the plate 10, can save top space of the box.

[0081] In some embodiments, the plate body 10 is provided with a main negative latch group 310 and a main positive latch group 320. The main negative contactor is connected to the main negative latch group 310 through a plug, and the main positive contactor is connected to the main positive latch group 320 through a plug.

[0082] This method uses a plug-in connection, which simplifies the structure and reduces costs compared to traditional plug-in connectors.

[0083] In some embodiments, the board body 10 is provided with a positive terminal latch 410 and a negative terminal latch 420, the distribution box also includes a bus positive terminal 21 and a bus negative terminal 22, the circuit board includes a sampling circuit, the positive terminal latch 410 is used to connect the bus positive terminal 21 and the sampling circuit, and the negative terminal latch 420 is used to connect the bus negative terminal 22 and the sampling circuit.

[0084] The use of the busbar can be achieved by setting the positive terminal clip 410 and the negative terminal clip 420.

[0085] In the above embodiments, the pre-charge latch group 330, the main negative latch group 310, and the main positive latch group 320 will be described in detail below. In the above embodiments, each contactor and each drive circuit can be designed in a conventional manner.

[0086] Figure 1 A schematic diagram of a circuit board provided according to an embodiment of this application is shown.

[0087] In the embodiments of this application, please refer to Figure 1 The circuit board includes a board body 10, on which a first edge region 101, a middle region 102, and a second edge region 103 located on at least one side of the middle region 102 are formed.

[0088] The edge region here refers to the part of the plate 10 near its edge, and the middle region 102 refers to the part of the plate 10 near its center. Figure 1 Taking the orientation shown as an example, the plate 10 defines the left and right sides in the X direction and the upper and lower sides in the Y direction. The first edge region 101 can be understood as the right side region of the plate 10, the second edge region 103 can be understood as the upper or lower side region of the plate 10, and the middle region 102 can be understood as the region between the upper and lower sides, or the region between the left and right sides.

[0089] The board body 10 is provided with plug-in connectors and snap-fit ​​connectors, at least one of which is used to realize the electrical connection between the circuit board and the battery information acquisition unit assembly.

[0090] In this embodiment, the snap-fit ​​connector simplifies the connection between the circuit board and the battery information acquisition unit assembly. Compared to plug-in connectors, snap-fit ​​connectors simplify wiring layout, save on wiring harnesses, and significantly reduce connection nodes, thereby reducing wiring harness arrangement. The connection method becomes simpler and easier to operate. The entire circuit board connection system is also easier to maintain, and manufacturing, installation, and maintenance costs are reduced. The circuit board is structurally more compact, thus simplifying the circuit board, reducing its cost, minimizing its space occupation in the distribution box, and simplifying its assembly within the distribution box. Furthermore, the significant reduction in wiring harnesses avoids safety hazards caused by tangled wiring and flying wires, improving the overall safety of the connection system.

[0091] In some embodiments, the aforementioned connectors may include a first connector 100 and a second connector 200, and the snap-fit ​​connectors may include a first snap-fit ​​group 300 and a second snap-fit ​​group 400, so as to realize the connection of the circuit board in the distribution box.

[0092] The first connector 100 can be disposed on the edge of the board 10, for example, in the first edge region 101 mentioned above. The first connector 100 is used to connect to the battery information collector assembly. The first connector 100 can be connected to the first and second ends of the battery information collector assembly, and can be connected in a twisted pair cascade manner, so that a complete loop can be formed between the circuit board and the battery information collector.

[0093] The second connector 200 can be located on the edge of the board 10, for example, in the aforementioned first edge region 101. The second connector 200 is used to connect to the vehicle's communication system. This second connector connects the circuit board to the vehicle's CAN bus communication, ECU 12V constant power, the vehicle's IG3 signal, and GND level, etc.

[0094] The first connector 100 and the second connector 200 can be connected by wire harnesses. In some embodiments, the first connector 100 and the second connector 200 are spaced apart in the first edge region 101, which facilitates the arrangement of wire harnesses in the same area of ​​the circuit board, helps to clarify the wire harnesses, and also helps to simplify the arrangement of wire harnesses.

[0095] It is understandable that the distance between the first connector 100 and the second connector 200 can be set according to different situations.

[0096] The first connector 100 and the second connector 200 are used to connect to the battery information acquisition unit assembly and the vehicle, respectively. To maintain the reliability and stability of the connection, the circuit board retains the connection method of the connector.

[0097] The first latching assembly 300 can be located in the middle of the plate 10, for example, in the aforementioned middle region 102, and is used to connect the contactor. The second latching assembly 400 can be located at the edge of the plate 10, for example, in the second edge region 103, and is used to connect to the busbar 20.

[0098] Understandably, contactors are typically fixed in distribution boxes, for example, by being embedded in them. There are many types of contactors with different functions, and their positions within the distribution box are generally fixed. Therefore, the connection method between the circuit board and the contactor can be simplified by replacing the plug-in connection with a snap-fit ​​connection, thereby simplifying the connection between the contactor and the circuit board while ensuring performance and safety. Similarly, since bus 20 is the output bus of the battery pack, the connection method between the circuit board and bus 20 can also be simplified by replacing the plug-in connection with a snap-fit ​​connection, thus simplifying the connection between bus 20 and the circuit board.

[0099] In the above embodiments, by rationally dividing the areas on the board 10 and using different connectors in different areas, the structural composition of the circuit board can be simplified while ensuring the reliability and stability of the connection between the circuit board and the surrounding structure or components. Specifically, the board 10 has a first edge area 101, a middle area 102, and a second edge area 103. A first connector 100 and a second connector 200 are disposed in the first edge area 101, a first latching group 300 is disposed in the middle area 102, and a second latching group 400 is disposed in the second edge area 103. The first connector 100 is used to connect to the battery information acquisition unit assembly, and the second connector 200 is used to connect to the vehicle's communication system. This ensures the reliability and stability of the connection between the circuit board and the battery information acquisition unit assembly and the vehicle. The first latching group 300 is used for... Connected to the contactor, the second snap-fit ​​assembly 400 is used to connect the busbar 20. For the connection between the circuit board and the contactor / busbar 20, replacing the plug-in connectors with snap-fit ​​methods significantly reduces connection points, thereby reducing wiring harness arrangement. The connection method becomes simpler and easier to operate. The entire circuit board connection system is also easier to maintain, and manufacturing, installation, and maintenance costs are reduced. The circuit board is structurally more compact, thus simplifying the circuit board, reducing its cost, minimizing its space occupation in the distribution box, and simplifying its assembly. Furthermore, the significant reduction in wiring harnesses avoids safety hazards caused by tangled wiring and flying wires, improving the overall safety of the connection system.

[0100] In some embodiments, please refer to Figure 1 The contactor includes a main negative contactor and a main positive contactor, the circuit board includes a main negative drive circuit and a main positive drive circuit, and the first latching group 300 includes a main negative latching group 310 and a main positive latching group 320.

[0101] The main negative latch group 310 is used to connect the main negative contactor, and the main positive latch group 320 is used to connect the main positive contactor.

[0102] Here, the main negative contactor is configured with a main negative latch group 310, and the main positive contactor is configured with a main positive latch group 320. This enables the connection between the circuit board and the main negative contactor, as well as the connection between the circuit board and the main positive contactor. It also enables the matching between the first latch group 300 and the contactor, thus optimizing the connection method.

[0103] In some embodiments, please refer to Figure 1 The main negative latch group 310 includes a first main negative latch 311 and a second main negative latch 312, and a main negative contactor is connected between the first main negative latch 311 and the second main negative latch 312; the main positive latch group 320 includes a first main positive latch 321 and a second main positive latch 322, and a main positive contactor is connected between the first main positive latch 321 and the second main positive latch 322.

[0104] Specifically, for the main negative contactor, it can be embedded in the distribution box and located below the main negative latch assembly 310. During connection, one end of the main negative contactor is connected to the first main negative latch 311, and the other end is connected to the second main negative latch 312. The first main negative latch 311 is connected to the input terminal of the main negative drive circuit on the circuit board, and the second main negative latch 312 is connected to the ground terminal of the main negative drive circuit, thus forming a connection between the main negative contactor and the main negative drive circuit. The circuit is as follows: For the main positive contactor, the main positive contactor can be embedded in the distribution box and located below the main positive latch group 320. When connected, one end of the main positive contactor is connected to the first main positive latch 321, and the other end of the main positive contactor is connected to the second main positive latch 322. The first main positive latch 321 is connected to the input terminal of the main positive drive circuit on the circuit board, and the second main positive latch 322 is connected to the ground terminal of the main positive drive circuit, thereby forming a circuit between the main positive contactor and the main positive drive circuit.

[0105] Therefore, the connection between the main negative contactor, the main positive contactor and the circuit board can be realized through the main negative snap-fit ​​group 310 and the main positive snap-fit ​​group 320, eliminating the need for excessive wiring harnesses and simplifying the connection process.

[0106] In some embodiments, the main negative contactor is connected to the main negative latch group 310 via a tab; the main positive contactor is connected to the main positive latch group 320 via a tab. The connection between the tab and the main negative latch group 310 and the tab and the main positive latch group 320 can improve connection efficiency and simplify the connection compared to the connection method of a plug-in connector.

[0107] In some embodiments, the contactor further includes a precharge contactor, the circuit board includes a precharge drive circuit, and the first latch group 300 further includes a precharge latch group 330 for connecting the precharge contactor and / or the precharge drive circuit on the circuit board.

[0108] As described above, the precharge contactor can be connected to the back of the board 10 and corresponds to the precharge latch group 330, which is used to connect the precharge contactor and the precharge drive circuit.

[0109] In this embodiment, the pre-charge contactor can be transferred from being embedded in the distribution box to being connected to the board 10. During the process of assembling the circuit board into the distribution box, the pre-charge contactor and the circuit board can be assembled into the distribution box together, thereby simplifying the assembly process. The pre-charge contactor can be confined in the receiving cavity at the top of the distribution box, which can restrict the circuit board to a certain extent on the one hand, and make full use of the top space of the distribution box on the other hand, thereby improving the space utilization rate of the distribution box.

[0110] Similar to the aforementioned main positive latch group 320 and main negative latch group 310, the precharge contactor connects to the circuit board through the precharge latch group 330, which optimizes the connection between the two.

[0111] As mentioned above, the precharge contactor can be connected to the plate 10 by welding.

[0112] In some embodiments, the precharge drive circuit includes a precharge resistor, and the precharge latch group 330 includes a first precharge latch 331 and a second precharge latch 332, with the precharge resistor connected between the first precharge latch 331 and the second precharge latch 332.

[0113] Specifically, for the precharge contactor, one end of the precharge contactor is connected to the first precharge latch 331 through the circuit inside the board 10, and the other end is connected to the second precharge latch 332 through the circuit inside the board 10. A precharge resistor is connected between the first precharge latch 331 and the second precharge latch 332. The precharge resistor is fixedly installed in the power distribution phase. The precharge contactor is connected to the precharge drive circuit through the circuit inside the board 10, thereby forming a loop between the precharge contactor, the precharge resistor and the circuit board.

[0114] Therefore, the connection between the precharge contactor and the circuit board can be achieved through the precharge buckle assembly 330, eliminating the need for excessive wiring harnesses and simplifying the connection process.

[0115] During the connection process described above, the pre-charge resistor can be connected to the first pre-charge latch 331 and the second pre-charge latch 332 via a plug. The connection between the plug and the pre-charge point can improve connection efficiency and simplify the connection compared to the connection method of the connector.

[0116] In some embodiments, please refer to Figure 1 The main negative latch group 310, the main positive latch group 320 and the precharge latch group 330 are separated, which makes it easy to distinguish the positions of the three and facilitates their connection with the main negative contactor, the main positive contactor and the precharge contactor respectively.

[0117] In some embodiments, bus 20 includes a positive terminal 21 and a negative terminal 22, the circuit board also includes a sampling circuit, and the second latch group 400 includes a positive terminal latch 410 and a negative terminal latch 420.

[0118] The positive terminal clip 410 is used to connect the positive terminal 21 of the busbar and the sampling circuit, and the negative terminal clip 420 is used to connect the negative terminal 22 of the busbar and the sampling circuit.

[0119] The positive terminal clip 410 is configured for the positive terminal 21 of the busbar, and the negative terminal clip 420 is configured for the negative terminal 22 of the busbar, which enables the connection between the circuit board and the busbar 20 and optimizes the connection method.

[0120] Specifically, the positive terminal 21 of the busbar can be connected to the positive terminal clip 410 by means of a plug, and the negative terminal 22 of the busbar can be connected to the negative terminal clip 420 by means of a plug. The positive terminal clip 410 and the negative terminal clip 420 are then connected to the sampling circuit on the circuit board.

[0121] The connection method for the inserts here can be referred to in the previous text, and the effect is similar to that in the previous text, so it will not be repeated here.

[0122] In some embodiments, please refer to Figure 1 The positive end clip 410 and the negative end clip 420 are located on both sides of the first clip group 300. This arrangement can be adapted to both ends of the busbar 20 and can be connected to the busbar 20 at the second edge of the board body 10, making the structure of the circuit board simpler.

[0123] In some embodiments, please refer to Figure 1 The second latch group 400 also includes a battery pack voltage latch 430 for connecting the positive terminal of the battery pack and the sampling circuit.

[0124] Specifically, the connection between the battery pack voltage latch 430 and the sampling circuit is mainly used to collect the battery pack voltage. During connection, the positive terminal of the battery pack can be connected to the battery pack voltage latch 430 by means of a plug, and the battery pack voltage latch 430 is then connected to the sampling circuit on the circuit board.

[0125] In the above description, it is important to understand that the sampling circuit and each driving circuit are integrated on the circuit board, which is an integrated circuit design on the circuit board. The specific design aspects of the sampling circuit and each driving circuit, including node connections and component selection, can be set with reference to existing related designs.

[0126] In some embodiments, please refer to Figure 1 The second edge region 103 includes a second sub-edge region 1031. The circuit board also includes a shunt 30. The board body 10 is provided with an adapter interface 40 at the second sub-edge region 1031. The adapter interface 40 has an orientation perpendicular to the board body 10. The shunt 30 is connected to the adapter interface 40.

[0127] As described above, the plate 10 and the splitter 30 can form a perpendicular relationship. The function of the adapter 40 is to realize the above-mentioned perpendicular relationship between the plate 10 and the splitter 30. The second sub-edge region 1031 can be located on the lower side of the plate 10. The adapter 40 is connected to the lower side of the plate 10. The adapter 40 has an orientation perpendicular to the plate 10. After the splitter 30 is connected to the adapter 40, the above-mentioned perpendicular relationship is formed between the splitter 30 and the plate 10.

[0128] According to the circuit board in the above embodiments of this application, this application also provides a battery pack, which is equipped with a battery management system, and the battery execution and sampling unit in the battery management system adopts the above circuit board structure.

[0129] The battery pack may include the aforementioned distribution box, with the circuit board housed within it. This distribution box can be more compact in structure, reducing its space footprint within the battery pack and thus facilitating the formation of a higher-capacity battery pack.

[0130] Based on the circuit board or battery pack in the above embodiments of this application, this application also provides an electrical device, wherein the battery pack can provide electrical energy to the electrical device. In this application embodiment, the electrical device can be a vehicle, and based on the design of the battery pack in this application embodiment, the vehicle has stronger power performance and safety performance. The vehicle can be a new energy vehicle, such as a pure electric vehicle (PEV / BEV), a range-extended electric vehicle (REEV), a hybrid electric vehicle (HEV), or a fuel cell electric vehicle; the vehicle can also be any vehicle with a battery.

[0131] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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 application.

[0132] In the description of this application, it should be understood that the terms "comprising" and "having" and any variations thereof used in the embodiments of this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.

[0133] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the connection within two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0134] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A circuit board, characterized in that, include: The board body (10) includes a plug and a snap-fit ​​connector disposed on the board body (10), wherein at least one of the plug and the snap-fit ​​connector is used to realize the electrical connection between the circuit board and the battery information collector assembly.

2. The circuit board according to claim 1, characterized in that, The snap-fit ​​connector includes a first snap-fit ​​group (300) for connecting a contactor.

3. The circuit board according to claim 2, characterized in that, The first latch assembly (300) includes: Main negative snap-fit ​​assembly (310) is used to connect the main negative contactor; And / or, main positive snap-fit ​​assembly (320), for connecting the main positive contactor.

4. The circuit board according to claim 3, characterized in that, The main negative latch group (310) includes a first main negative latch (311) and a second main negative latch (312), and the main negative contactor is connected between the first main negative latch (311) and the second main negative latch (312).

5. The circuit board according to claim 3, characterized in that, The main positive latch group (320) includes a first main positive latch (321) and a second main positive latch (322), and the main positive contactor is connected between the first main positive latch (321) and the second main positive latch (322).

6. The circuit board according to claim 3, characterized in that, The first latch group (300) further includes a precharge latch group (330), which is used to connect the precharge contactor and / or the precharge drive circuit on the circuit board.

7. The circuit board according to claim 6, characterized in that, The precharge latch group (330) includes a first precharge latch (331) and / or a second precharge latch (332), the first precharge latch (331) is connected to the precharge contactor, and the second precharge latch (332) is connected to the precharge drive circuit.

8. The circuit board according to claim 7, characterized in that, The precharge drive circuit also includes a precharge resistor, which is connected between the first precharge latch (331) and the second precharge latch (332).

9. The circuit board according to claim 6, characterized in that, The main negative buckle group (310), the main positive buckle group (320), and the precharge buckle group (330) are arranged separately.

10. The circuit board according to claim 2, characterized in that, The first snap-fit ​​assembly (300) is located in the middle area of ​​the plate (10).

11. The circuit board according to claim 10, characterized in that, The snap-fit ​​connector includes a second snap-fit ​​assembly (400) for connecting to the busbar (20).

12. The circuit board according to claim 11, characterized in that, The second snap-fit ​​assembly (400) includes: Positive terminal clip (410) is used to connect the positive terminal (21) of the busbar to the sampling circuit on the circuit board; And a negative terminal clip (420) for connecting the negative terminal (22) of the busbar to the sampling circuit on the circuit board.

13. The circuit board according to claim 12, characterized in that, The second latch assembly (400) also includes: A battery pack voltage clip (430) is used to connect the positive terminal of the battery pack to the sampling circuit.

14. The circuit board according to claim 11, characterized in that, The second snap-fit ​​assembly (400) is disposed at the edge of the plate (10).

15. The circuit board according to claim 12, characterized in that, The positive end buckle (410) and the negative end buckle (420) are located on both sides of the first buckle group (300).

16. The circuit board according to any one of claims 1-10, characterized in that, The circuit board also includes: Adapter (40), the splitter is adapted to be connected to the adapter (40).

17. The circuit board according to claim 16, characterized in that, The adapter (40) has an orientation perpendicular to the plate (10).

18. The circuit board according to claim 16, characterized in that, The adapter interface (40) is located at the edge of the plate.

19. The circuit board according to any one of claims 1-10, characterized in that, The connector is located at the edge of the plate.

20. The circuit board according to any one of claims 1-10, characterized in that, The connector includes a first connector for connecting to the battery information collector assembly.

21. The circuit board according to claim 20, characterized in that, The connector includes a second connector for connecting to the vehicle's communication system.

22. The circuit board according to claim 21, characterized in that, At least one of the first connector and the second connector is disposed at the edge of the plate.

23. A distribution box, characterized in that, include: Box; And the circuit board according to any one of claims 1 to 22, wherein the circuit board is placed inside the housing.

24. The distribution box according to claim 23, characterized in that, The circuit board is placed flat on top of the housing.

25. The distribution box according to claim 24, characterized in that, The top of the housing has a receiving cavity, and a pre-charge contactor is connected to the board body (10) of the circuit board, and the pre-charge contactor is housed in the receiving cavity.

26. The distribution box according to claim 23, characterized in that, The circuit board includes a shunt (30) which is perpendicular to the board body (10).

27. The distribution box according to claim 23, characterized in that, The distribution box also includes a contactor connected to the first latch group (300).

28. The distribution box according to claim 27, characterized in that, The circuit board includes a main negative drive circuit, a main positive drive circuit, and a pre-charge drive circuit. The contactor includes a main negative contactor, a main positive contactor, and a pre-charge contactor. The main negative drive circuit is connected to the main negative contactor, the main positive drive circuit is connected to the main positive drive circuit, and the pre-charge drive circuit is connected to the pre-charge contactor.

29. The distribution box according to claim 28, characterized in that, The precharge contactor is welded onto the plate (10).

30. The distribution box according to claim 28, characterized in that, The plate (10) is provided with a precharge buckle group (330), and the precharge contactor is connected to the back of the plate (10) and corresponds to the precharge buckle group (330).

31. The distribution box according to claim 28, characterized in that, The plate (10) is provided with a main negative latch group (310) and a main positive latch group (320). The main negative contactor is connected to the main negative latch group (310) through a plug, and the main positive contactor is connected to the main positive latch group (320) through a plug.

32. The distribution box according to claim 28, characterized in that, The board body (10) is provided with a positive terminal buckle (410) and a negative terminal buckle (420). The distribution box also includes a bus positive terminal (21) and a bus negative terminal (22). The circuit board includes a sampling circuit. The positive terminal buckle (410) is used to connect the bus positive terminal (21) and the sampling circuit. The negative terminal buckle (420) is used to connect the bus negative terminal (22) and the sampling circuit.

33. A battery pack, characterized in that, The distribution box includes any one of claims 23 to 32.

34. An electrical appliance, characterized in that, Includes the battery pack as described in claim 33.

35. A vehicle, characterized in that, Includes the battery pack as described in claim 33.

Images