Shunt, battery management system, and vehicle

Abstract

The application relates to a shunt, a battery management system and a vehicle. The shunt comprises a main body assembly, a circuit board and a connector. The main body assembly comprises a shunt plate and a connecting pin connected with the shunt plate, the connecting pin is arranged on at least one side of the shunt plate in a first direction, and one end of the connecting pin extends along a second direction and protrudes from the shunt plate, the second direction is perpendicular to the first direction; the circuit board is arranged on one side of the shunt plate in the second direction, and part of the circuit board protrudes from the shunt plate along the first direction and forms a protruding part, and the part of the connecting pin protruding from the shunt plate along the second direction is connected with the protruding part; the connector is arranged on the side of the circuit board away from the shunt plate, and at least part of the connector is arranged on the protruding part. The shunt has a reasonable structure design, and the connector of the shunt is convenient to connect with a high-voltage box.

Description

Technical Field

[0001] This application relates to the field of current sampling technology, and in particular to a shunt, a battery management system, and a vehicle. Background Technology

[0002] The battery management system (BMS) is a crucial component of new energy vehicles, serving as a bridge connecting the power battery and the vehicle as a whole. The BMS includes a shunt and a controller that communicates with the shunt. The shunt collects the current signal from the power battery in real time, enabling the controller to determine if a battery malfunction has occurred based on the collected current information. The shunt comprises a shunt body, a circuit board, and a connector. The circuit board is mounted on the shunt body, and the connector is located on the side of the circuit board facing away from the shunt body.

[0003] In some battery management systems, the shunt is located inside the high-voltage box. The plug on the side wall of the high-voltage box is connected to the connector of the shunt, and the collected current signal is transmitted to the controller outside the high-voltage box through the sampling line connected to the plug.

[0004] However, the shunt structure design of the related technology is unreasonable, which makes it inconvenient to connect the shunt to the high-voltage box. Utility Model Content

[0005] Therefore, it is necessary to provide a shunt, a current management system, and a vehicle to address the above problems. The shunt has a reasonable structural design, which facilitates the connection of the shunt's connector to the high-voltage box.

[0006] On the one hand, a shunt is provided, comprising:

[0007] The main component includes a flow divider and a connecting foot connected to the flow divider. The connecting foot is disposed on at least one side of the flow divider in a first direction, and one end of the connecting foot extends along a second direction and protrudes from the flow divider. The second direction is perpendicular to the first direction.

[0008] A circuit board is disposed on one side of the shunt plate in the second direction. Along the first direction, a portion of the circuit board protrudes from the shunt plate and forms a protrusion. The portion of the connecting pin protruding from the shunt plate along the second direction is connected to the protrusion.

[0009] A connector is disposed on the side of the circuit board facing away from the shunt plate, and at least a portion of the connector is disposed on the protrusion.

[0010] In one embodiment, the connector has a socket for plug insertion, the socket being located on one side of the connector in a first direction.

[0011] In one embodiment, along the first direction, the insertion interface is located on the side of the connector facing outwards from the circuit board.

[0012] In one embodiment, the circuit board includes a motherboard and a protrusion connected to the motherboard. Along the first direction, the protrusion protrudes from opposite sides of the motherboard. The connecting pin includes a fixing member and a sampling pin, both connected to the shunt plate. The fixing member has at least one component. The sampling pin and at least one fixing member are respectively disposed on opposite sides of the shunt plate in the first direction. One end of the sampling pin and one end of the fixing member both extend along the second direction and are connected to the protrusion.

[0013] In one embodiment, the fixing member has two parts, one of which is a first fixing member and the other is a second fixing member. One of the first fixing member and the second fixing member is disposed on one side of the diverter in the first direction, and the other and the sampling foot are disposed on the other side of the diverter in the first direction.

[0014] In one embodiment, the shunt plate includes a shunt body and a support block connected to the shunt body. The shunt body is connected to the first fixing member, the second fixing member and the sampling foot respectively. The shunt body is disposed on one side of the motherboard in the second direction. Along the first direction, the support block protrudes at least partially from the shunt body and abuts against the side of the protrusion facing the shunt plate.

[0015] In one embodiment, the protrusion includes a first protrusion and a second protrusion respectively protruding from opposite sides of the motherboard in the first direction. Both the first protrusion and the second protrusion are provided with mounting holes. The first fixing member and the first protrusion protrude from the same side of the shunt body. The second fixing member, the sampling foot, and the second protrusion protrude from the same side of the shunt body. The portion of the first fixing member protruding from the shunt body in the second direction is fixed in the mounting hole of the first protrusion. The second protrusion has at least two mounting holes. The second fixing member and the sampling foot correspond one-to-one with the mounting holes on the second protrusion. The portion of the second fixing member protruding from the shunt body in the second direction and the portion of the sampling foot protruding from the shunt body in the second direction are respectively fixed in the corresponding mounting holes on the second protrusion. The connector is disposed on either the first protrusion or the second protrusion. The support block abuts against the side of the first protrusion or the second protrusion facing the shunt plate.

[0016] In one embodiment, the connector is disposed on the first protrusion, the support block and the first protrusion protrude from the same side of the splitter body, and the support block abuts against the side of the first protrusion facing the splitter plate.

[0017] In one embodiment, the shunt body includes a resistive segment and two conductive segments. The two conductive segments are connected to both ends of the resistive segment along a third direction, which is perpendicular to the first direction and the second direction, respectively. The resistive segment is connected to the sampling pin. The first fixing member and the second fixing member correspond one-to-one with the two conductive segments and are connected to their respective conductive segments. At least one of the two conductive segments and the resistive segment is connected to the support block.

[0018] In one embodiment, the first fastener and the connector are spaced apart along the third direction.

[0019] In one embodiment, the conductive segment is connected to the support block.

[0020] In one embodiment, the sampling feet have at least two, and the at least two sampling feet are distributed at intervals along the third direction.

[0021] In one embodiment, the side of the connector having the insertion interface is flush with the side of the first protrusion facing away from the motherboard.

[0022] On the other hand, a battery management system is also provided, including a high-voltage box, a controller, a sampling line, and the aforementioned shunt. The shunt is disposed inside the high-voltage box, and the controller is disposed outside the high-voltage box. The high-voltage box has a plug that is communicatively connected to the sampling line. The plug is inserted into the connector interface of the shunt. At least a portion of the sampling line is located outside the high-voltage box and connected to the controller.

[0023] On another front, a vehicle is also provided, including a power battery and the aforementioned battery management system, wherein the battery management system is communicatively connected to the power battery.

[0024] The aforementioned shunt features a portion of the circuit board protruding along the width of the shunt plate, forming a protrusion. This protrusion provides sufficient space for the installation of connecting pins and connectors, making efficient use of the circuit board's space. This allows the connector to be positioned closer to the outer edge of the circuit board, and when the shunt is installed inside a high-voltage box, it brings the connector closer to the side wall of the high-voltage box, facilitating connection between the connector and the plug on the side wall. Connecting pins are provided on the shunt plate, connecting to the protrusion on the circuit board to prevent relative movement of the circuit board relative to the shunt plate. Furthermore, the connecting pins enable electrical and signal connections between the shunt plate and the circuit board, meeting the shunt's operational requirements. Attached Figure Description

[0025] Figure 1 This is a perspective view of the splitter in some embodiments of this application.

[0026] Figure 2 for Figure 1 The side view of the splitter shown.

[0027] Figure 3 for Figure 1 The top view of the splitter shown.

[0028] Figure 4 This is a perspective view of the main components in some embodiments of this application.

[0029] Figure 5 for Figure 4 The top view of the main components shown.

[0030] In the picture:

[0031] 1. Main component; 11. Shunt plate; 111. Shunt body; 1111. Conductive section; 1112. Resistive section; 112. Support block; 12. First fixing component; 13. Second fixing component; 14. Sampling pin; 2. Circuit board; 21. Main board; 22. Protrusion; 221. First protrusion; 222. Second protrusion; 3. Connector; 4. Mounting hole; 100. Shunt. Detailed Implementation

[0032] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0033] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms 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.

[0034] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0035] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "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 mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0036] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0037] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0038] The battery management system is an important component of new energy vehicles, serving as a bridge connecting the power battery and the vehicle as a whole. One embodiment of this application provides a battery management system including a high-voltage box, a controller, a sampling line, and a shunt. The shunt is located inside the high-voltage box, while the controller is located outside the high-voltage box. The high-voltage box has a plug for communication with the sampling line, which is inserted into the connector interface of the shunt. At least a portion of the sampling line is located outside the high-voltage box and connected to the controller.

[0039] A shunt is an instrument used to measure current. Its measurement principle involves directly measuring the voltage across the shunt, and then, according to Ohm's law, dividing the measured voltage by the shunt's resistance to obtain the current value in the circuit. The sampling line transmits the measured current to the controller, which uses this information to determine if the power battery has malfunctioned, thus providing circuit protection. Placing the shunt in the high-voltage box allows the high-voltage box to provide protection for the shunt.

[0040] See Figure 1 , Figure 2 , Figure 3 and Figure 4 , Figure 1 A perspective view of the shunt in some embodiments of this application is shown; Figure 2 It shows Figure 1 The side view of the splitter shown; Figure 3 It shows Figure 1 The top view of the splitter shown; Figure 4A perspective view of the main components in some embodiments of this application is shown. The shunt 100 includes a main component 1, a circuit board 2, and a connector 3. The main component 1 includes a shunt plate 11 and a connecting pin connected to the shunt plate 11. The connecting pin is disposed on at least one side of the shunt plate 11 in a first direction, and one end of the connecting pin extends along a second direction and protrudes from the shunt plate 11, the second direction being perpendicular to the first direction. The circuit board 2 is disposed on one side of the shunt plate 11 in the second direction. Along the first direction, a portion of the circuit board 2 protrudes from the shunt plate 11, forming a protrusion 22. The portion of the connecting pin protruding from the shunt plate 11 along the second direction connects to the protrusion 22. The connector 3 is disposed on the side of the circuit board 2 facing away from the shunt plate 11, and at least a portion of the connector 3 is disposed on the protrusion 22.

[0041] It should be noted that in this application, the first direction is the width direction of the flow divider 11, that is, the direction indicated by the X arrow in the figure, and the second direction is the thickness direction of the flow divider 11, that is, the direction indicated by the Z arrow in the figure.

[0042] In the shunt 100 of this application, a portion of the circuit board 2 protrudes along the width direction of the shunt plate 11 to form a protrusion 22. This protrusion 22 provides sufficient space for the installation of connecting pins and connector 3, making efficient use of the space on the circuit board 2. This allows the connector 3 to be closer to the outer edge of the circuit board 2. When the shunt 100 is installed inside the high-voltage box, this brings the connector 3 closer to the side wall of the high-voltage box, facilitating connection between the connector 3 and the plug on the side wall of the high-voltage box. Connecting pins are provided on the shunt plate 11 and connect to the protrusion 22 of the circuit board 2, preventing relative movement of the circuit board 2 relative to the shunt plate 11. Furthermore, the connecting pins also enable electrical and signal connections between the shunt plate 11 and the circuit board 2, meeting the usage requirements of the shunt 100.

[0043] In some embodiments of the shunt 100, the connector 3 has a plug-in interface located on one side of the connector 3 in a first direction. Unlike shunt 100s in the prior art, in the shunt 100 of this application, since the plug-in interface is located on one side of the connector 3 in the width direction of the shunt plate 11, the connector 3 is mounted horizontally on the circuit board 2, which can effectively reduce the overall height of the shunt 100, thereby reducing the space occupied by the shunt 100 in the height direction of the high-voltage box and optimizing the internal space layout of the high-voltage box.

[0044] For example, along the width direction of the shunt plate 11 (i.e., the first direction), the connector is located on the side of the connector 3 facing the outside of the circuit board 2. It is understood that the circuit board 2 is provided with a number of electronic components to ensure the normal operation of the shunt 100. By setting the connector to the side of the connector 3 facing the outside of the circuit board 2, the connector 3's connector is close to the outer edge of the circuit board 2. This prevents the plug from interfering with the position of the electronic components on the circuit board 2, which is beneficial for the arrangement of the electronic components and for inserting the plug into the connector.

[0045] In some embodiments, see Figure 1 and Figure 2 The circuit board 2 includes a main board 21 and a protrusion 22 connected to the main board 21. Along the width direction of the shunt plate 11, the protrusion 22 protrudes from both sides opposite to the main board 21, and the protrusion 22 and the main board 21 are an integral structure. Of course, in actual implementation, the protrusion 22 and the main board 21 can also be set as separate structures, and there are no specific restrictions on the structure of the protrusion 22 and the main board 21.

[0046] The connecting pins include fixing members and sampling pins 14, both connected to the shunt plate 11. Each fixing member has at least one fixing member. The sampling pin 14 and at least one fixing member are respectively disposed on opposite sides of the shunt plate 11 in the width direction. One end of the sampling pin 14 and one end of the fixing member both extend along the thickness direction of the shunt plate 11 and connect to the protrusion 22. By distributing the sampling pin 14 and at least one fixing member on opposite sides of the shunt plate 11 in the width direction, the circuit board 2 can be positioned using the sampling pin 14 and the fixing member, facilitating the assembly of the circuit board 2 with the shunt plate 11.

[0047] Furthermore, there are two fixing members: a first fixing member 12 and a second fixing member 13. One of the first fixing member 12 and the second fixing member 13 is located on one side of the flow divider 11 in the width direction, and the other, along with the sampling foot 14, is located on the other side of the flow divider 11 in the width direction. In this example, the second fixing member 13 and the sampling foot 14 are located on the same side of the flow divider 11 in the width direction. By setting the first fixing member 12 and the second fixing member 13, the circuit board 2 can be positioned using the first fixing member 12 and the second fixing member 13 respectively.

[0048] See Figure 4 and Figure 5 , Figure 5 It shows Figure 4The diagram shows a top view of the main component. The shunt plate 11 includes a shunt body 111 and a support block 112 connected to the shunt body 111. The shunt body 111 is connected to a first fixing member 12, a second fixing member 13, and a sampling pin 14. The shunt body 111 is located on one side of the main board 21 in the thickness direction of the shunt plate 11. Along the width direction of the shunt plate 11, the support block 112 at least partially protrudes from the shunt body 111, and abuts against the side of the protrusion 22 facing the shunt plate 11. Electronic components are mounted on the main board 21, and the shunt body 111 provides support for the main board 21. It is understood that in the shunt 100, the circuit board 2 is relatively thin. When the shunt 100 is used in a new energy vehicle, the vibration of the entire vehicle will cause the shunt 100 to vibrate. The support block 112 is provided on the shunt body 111 to support the protrusion 22 and prevent the circuit board 2 from being damaged by vibration.

[0049] See Figure 2The protrusion 22 includes a first protrusion 221 and a second protrusion 222 that protrude from opposite sides of the main board 21 in the width direction of the diverter plate 11. Both the first protrusion 221 and the second protrusion 222 are provided with mounting holes 4. The first fixing member 12 and the first protrusion 221 protrude from the same side of the diverter body 111. The second fixing member 13, the sampling foot 14, and the second protrusion 222 protrude from the same side of the diverter body 111. The portion of the first fixing member 12 protruding from the diverter body 111 along the thickness direction of the diverter plate 11 is fixed in the mounting hole 4 of the first protrusion 221. For example, the first fixing member 12 is welded into the mounting hole 4 of the first protrusion 221. The second protrusion 222 has at least two mounting holes 4. The second fixing member 13 and the sampling foot 14 correspond one-to-one with the mounting holes 4 on the second protrusion 222. The portion of the second fixing member 13 protruding from the diverter body 111 along the thickness direction of the diverter plate and the portion of the sampling foot 14 protruding from the diverter body 111 along the second direction are both fixed in the mounting holes 4 corresponding to the second protrusion 222. For example, the second fixing member 13 and the sampling foot 14 are respectively welded in the corresponding mounting holes 4. The connector 3 is disposed on either the first protrusion 221 or the second protrusion 222. The support block 112 abuts against the side of the first protrusion 221 or the second protrusion 222 facing the diverter plate 11. Since the first protrusion 221 and the second protrusion 222 are located on opposite sides of the main board 21 in the width direction of the shunt plate 11, the first fixing member 12 and the first protrusion 221 protrude from the same side of the shunt body 111, and the second fixing member 13, the sampling foot 14 and the second protrusion 222 protrude from the same side of the shunt body 111, the first fixing member 12 and the sampling foot 14 or the second fixing member 13 are located on opposite sides of the shunt body 111 in the width direction of the shunt plate 11. When assembling the shunt plate 11 and the circuit board 2, the first fixing member 12 can be inserted into the mounting hole 4 of the first protrusion 221, and the second fixing member 13 and the sampling foot 14 can be inserted into the mounting holes 4 corresponding to the second protrusion 222. After positioning the circuit board 2, the first fixing member 12, the second fixing member 13 and the sampling foot 14 are soldered to the circuit board 2, so that the circuit board 2 is fixed to the shunt plate 11. The first fixing member 12, the second fixing member 13 and the sampling foot 14 are provided so that the circuit board 2 can be positioned during the assembly of the circuit board 2 and the shunt plate 11 without the need for positioning fixtures or glue to fix the circuit board 2, which facilitates the assembly of the circuit board 2 and the shunt plate 11.

[0050] In actual implementation, there are at least two sampling pins 14, which are spaced apart. The shunt body 111 has a sampling section, and the sampling pins 14 sample the voltage of the sampling section. When there are more than two sampling pins 14, two of them are selected to connect to the sampling circuit for sampling, and the remaining sampling pins 14 are reserved for backup. In this example, there are two sampling pins 14, and the number of mounting holes 4 on the second protrusion 222 is adjusted according to the total number of sampling pins 14 and the second fixing member 13. That is, when there are two sampling pins 14 and one second fixing member 13, there are three mounting holes 4 on the second protrusion 222, and one sampling pin 14 or the second fixing member 13 is fixed in each mounting hole 4.

[0051] For example, see Figure 1 The connector 3 is disposed on the first protrusion 221. A support block 112 is provided, and the support block 112 and the first protrusion 221 protrude from the same side of the diverter body 111. The support block 112 is used to support the first protrusion 221. Because the circuit board 2 is relatively thin and the connector 3 has a certain weight, when the connector 3 is disposed on the first protrusion 221, it will bend the first protrusion 221 towards the diverter plate 11, potentially causing it to break. Therefore, providing the support block 112 to support the first protrusion 221 can prevent deformation of the first protrusion 221 and reduce the risk of breakage.

[0052] Of course, in other examples, the number of support blocks 112 can be flexibly set as needed, for example, the number of support blocks 112 can be set to two or more. When there are two or more support blocks 112, some support blocks 112 and the second protrusion 222 can be set to protrude from the same side of the diversion body 111, so that the support blocks 112 can also support the second protrusion 222.

[0053] In some embodiments, see Figure 3 , Figure 4 and Figure 5The shunt body 111 includes a resistive segment 1112 and two conductive segments 1111. The two conductive segments 1111 are connected to both ends of the resistive segment 1112 along a third direction, which is perpendicular to the first and second directions, respectively. The resistive segment 1112 is connected to the sampling pin 14. The first fixing member 12 and the second fixing member 13 correspond one-to-one with the two conductive segments 1111, and are respectively connected to their corresponding conductive segments 1111. At least one of the two conductive segments 1111 and the resistive segment 1112 is connected to a support block 112. It should be noted that the third direction in this application refers to the length direction of the shunt plate 11, that is, the direction indicated by the Y arrow in the figure. The conductive segment 1111 is made of a material with low resistivity, such as copper or brass, while the resistive segment 1112 is made of a material with high resistivity, such as manganin. When there are at least two sampling pins 14, the at least two sampling pins 14 are distributed at intervals along the length direction of the shunt plate 11 to make full use of the space along the length direction of the shunt plate 11, which is beneficial to the arrangement of the sampling pins 14. The resistor segment 1112 is the sampling segment. Since the resistance of the resistor segment 1112 is high, connecting the resistor segment 1112 to the sampling pins 14 can improve the sampling accuracy.

[0054] In some embodiments, see Figure 1 , Figure 2 , Figure 3 and Figure 4 When there are two fixing members, the first fixing member 12 is connected to one of the conductive segments 1111, and the second fixing member 13 is connected to the other conductive segment 1111. The second fixing member 13 is located on one side of the conductive segment 1111 in the width direction of the shunt plate 11, and one end of the second fixing member 13 protrudes from the shunt plate 11 along the thickness direction of the shunt plate 11. The first fixing member 12 and the first protrusion 221 protrude from the same side of the shunt plate 11, and the second fixing member 13 and the second protrusion 222 protrude from the same side of the shunt plate 11, so that the first fixing member 12 and the second fixing member 13 are diagonally distributed. In actual implementation, the second protrusion 222 is provided with a mounting hole 4 corresponding to the second fixing member 13. The part of the second fixing member 13 that protrudes from the shunt plate 11 along the thickness direction of the shunt plate 11 is welded into the corresponding mounting hole 4, so that the second fixing member 13 is connected to the second protrusion 222 of the circuit board 2. The first fixing member 12 and the second fixing member 13 are arranged diagonally. During the assembly of the circuit board 2 and the diverter plate 11, the first fixing member 12 and the second fixing member 13 can be inserted into the corresponding mounting holes 4 respectively, which restricts the movement of the circuit board 2 relative to the diverter plate 11 along the width and length of the diverter plate 11, thereby achieving a better positioning effect for the circuit board 2.

[0055] In some embodiments, the first fixing member 12 is integrally formed with the conductive segment 1111. Since the length of the shunt plate 11 is greater than the width of the shunt plate 11, in order to optimize the spatial layout on the shunt plate 11 and prevent the first fixing member 12 from being electrically connected to the connector 3, the first fixing member 12 and the connector 3 are arranged to be spaced apart along the length direction of the shunt plate 11.

[0056] Understandably, during the actual development of the shunt 100, the resistance value of the resistor segment 1112 is predetermined according to the requirements. For example, if the predetermined resistance value is 50 ohms, then during development, the shape of the resistor segment 1112 needs to be designed according to the predetermined resistance value and related formulas. After the resistor segment 1112 is prepared, it is then verified to ensure that the resistance value of the resistor segment 1112 meets the requirements.

[0057] In some embodiments, see Figure 4 and Figure 5 The conductive segment 1111 is connected to the support block 112. The conductive segment 1111 and the support block 112 are integrally formed, so that the support block 112 does not need to be connected to the resistor segment 1112. Based on the given resistance value, the resistor segment 1112 can be in a regular shape, which facilitates the subsequent verification of the resistor segment 1112, reduces the development difficulty of the shunt 100 and saves development costs.

[0058] In actual implementation, the side of connector 3 with the insertion interface is flush with the side of the first protrusion 221 that is away from the motherboard 21, so that the first protrusion 221 can provide sufficient support for connector 3 while minimizing the space occupied by circuit board 2 inside high voltage box.

[0059] In the battery management system of this application, since the connector 3's insertion interface is located on one side of the shunt plate 11 in the width direction, the connector 3 is mounted on the circuit board 2 in a horizontal position, which can effectively reduce the overall height of the shunt 100, thereby reducing the space occupied by the shunt 100 in the height direction of the high voltage box. This allows the high voltage box to be designed to be smaller, which is beneficial to reducing the overall height of the battery management system.

[0060] It should be noted that the battery management system of this application is not limited to use in new energy vehicles, but can also be used in other devices. No specific restrictions are placed on the application of the battery management system.

[0061] In some embodiments, a vehicle is also provided, including a power battery and the aforementioned battery management system, the battery management system being communicatively connected to the power battery. In the shunt 100 of this vehicle, a portion of the circuit board 2 protrudes along the width direction of the shunt plate 11 to form a protrusion 22. The protrusion 22 provides sufficient space for the installation of the connecting pins and the connector 3, making reasonable use of the space on the circuit board 2. This allows the connector 3 to be closer to the outer edge of the circuit board 2. When the shunt 100 is installed inside the high-voltage box, the connector 3 is closer to the side wall of the high-voltage box, thereby facilitating the connection between the connector 3 and the plug on the side wall of the high-voltage box, and thus facilitating the assembly of the vehicle.

[0062] Understandably, the means of transportation could be new energy vehicles, etc.

[0063] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0064] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A shunt, characterized in that, include: The main component includes a flow divider and a connecting foot connected to the flow divider. The connecting foot is disposed on at least one side of the flow divider in a first direction, and one end of the connecting foot extends along a second direction and protrudes from the flow divider. The second direction is perpendicular to the first direction. A circuit board is disposed on one side of the shunt plate in the second direction. Along the first direction, a portion of the circuit board protrudes from the shunt plate and forms a protrusion. The portion of the connecting pin protruding from the shunt plate along the second direction is connected to the protrusion. and A connector is disposed on the side of the circuit board facing away from the shunt plate, and at least a portion of the connector is disposed on the protrusion.

2. The shunt according to claim 1, characterized in that, The connector has a socket for plug insertion, the socket being located on one side of the connector in a first direction.

3. The shunt according to claim 2, characterized in that, Along the first direction, the insertion interface is located on the side of the connector facing outwards from the circuit board.

4. The shunt according to claim 2, characterized in that, The circuit board includes a motherboard and a protrusion connected to the motherboard. Along the first direction, the protrusion protrudes from opposite sides of the motherboard. The connecting pin includes a fixing member and a sampling pin, both of which are connected to the shunt plate. The fixing member has at least one. The sampling pin and at least one fixing member are respectively disposed on opposite sides of the shunt plate in the first direction. One end of the sampling pin and one end of the fixing member both extend along the second direction and are connected to the protrusion.

5. The shunt according to claim 4, characterized in that, The fixing member has two parts, one of which is a first fixing member and the other is a second fixing member. One of the first fixing member and the second fixing member is disposed on one side of the flow divider in the first direction, and the other and the sampling foot are disposed on the other side of the flow divider in the first direction.

6. The shunt according to claim 5, characterized in that, The shunt plate includes a shunt body and a support block connected to the shunt body. The shunt body is connected to the first fixing member, the second fixing member and the sampling foot respectively. The shunt body is disposed on one side of the motherboard in the second direction. Along the first direction, the support block protrudes at least partially from the shunt body and abuts against the side of the protrusion facing the shunt plate.

7. The shunt according to claim 6, characterized in that, The protrusion includes a first protrusion and a second protrusion respectively protruding from opposite sides of the motherboard in the first direction. Both the first protrusion and the second protrusion are provided with mounting holes. The first fixing member and the first protrusion protrude from the same side of the shunt body. The second fixing member, the sampling foot, and the second protrusion protrude from the same side of the shunt body. The portion of the first fixing member protruding from the shunt body in the second direction is fixed in the mounting hole of the first protrusion. The second protrusion has at least two mounting holes. The second fixing member and the sampling foot correspond one-to-one with the mounting holes on the second protrusion. The portion of the second fixing member protruding from the shunt body in the second direction and the portion of the sampling foot protruding from the shunt body in the second direction are respectively fixed in the corresponding mounting holes on the second protrusion. The connector is disposed on either the first protrusion or the second protrusion. The support block abuts against the side of the first protrusion or the second protrusion facing the shunt plate.

8. The shunt according to claim 7, characterized in that, The connector is disposed on the first protrusion, the support block and the first protrusion protrude from the same side of the splitter body, and the support block abuts against the side of the first protrusion facing the splitter plate.

9. The shunt according to claim 7, characterized in that, The current shunt body includes a resistive segment and two conductive segments. The two conductive segments are connected to both ends of the resistive segment along a third direction, which is perpendicular to the first direction and the second direction, respectively. The resistive segment is connected to the sampling pin. The first fixing member and the second fixing member correspond one-to-one with the two conductive segments and are connected to their respective conductive segments. At least one of the two conductive segments and the resistive segment is connected to the support block.

10. The shunt according to claim 9, characterized in that, The first fastener and the connector are spaced apart along the third direction.

11. The shunt according to claim 9, characterized in that, The conductive segment is connected to the support block.

12. The shunt according to claim 9, characterized in that, The sampling foot has at least two, and the at least two sampling feet are distributed at intervals along the third direction.

13. The shunt according to claim 12, characterized in that, The side of the connector with the insertion interface is flush with the side of the first protrusion that is away from the motherboard.

14. A battery management system, characterized in that, The device includes a high-voltage box, a controller, a sampling line, and a shunt as described in any one of claims 1 to 13, wherein the shunt is disposed inside the high-voltage box, the controller is disposed outside the high-voltage box, the high-voltage box has a plug that is communicatively connected to the sampling line, the plug being inserted into the connector interface of the shunt, and at least a portion of the sampling line being located outside the high-voltage box and connected to the controller.

15. A means of transportation, characterized in that, It includes a power battery and the battery management system as described in claim 14, wherein the battery management system is communicatively connected to the power battery.

Images