Power supply control device, battery pack, and vehicle

Abstract

The utility model relates to battery field discloses power supply control device, battery package and carrier. Power supply control device, include: mounting seat have multiple mounting position, and wherein including first mounting position, second mounting position and third mounting position, first mounting position installs electrical element, second mounting position selectivity installs boost switch subassembly or keeps empty, third mounting position selectivity installs buck switch subassembly or keeps empty, multiple conducting part all are located in corresponding mounting position, and be used for with electrical element, boost switch subassembly or buck switch subassembly electricity is connected, to with electrical element, boost switch subassembly or buck switch subassembly access charge -discharge circuit. Mounting seat sets up standardization mounting position, including first mounting position, second mounting position and third mounting position, through selectivity assembly boost switch subassembly, buck switch subassembly or keep empty, flexible adaptation different voltage platform demand.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, specifically to a power supply control device, a battery pack, and a carrier. Background Technology

[0002] With the rapid development of the new energy vehicle market, the demand for efficient and reliable power supply control devices is constantly increasing.

[0003] As a key component of new energy vehicles, the power supply control device is responsible for distributing the high-voltage electrical energy of the battery pack to high-voltage electrical equipment such as the motor assembly controller, drive motor assembly and electric air conditioning compressor, and safely directing the current to the battery pack during charging.

[0004] However, the operating voltages of different vehicle platforms vary significantly, and traditional power supply control devices are difficult to adapt to the diverse needs of the platforms, resulting in the need to develop dedicated power supply control devices for different platforms, which leads to high development costs. Utility Model Content

[0005] In view of this, the present invention provides a power supply control device, a battery pack, and a carrier to solve or improve the problem that the power supply control device is difficult to adapt to the diverse needs of the platform.

[0006] In a first aspect, this utility model provides a power supply control device, comprising:

[0007] The mounting base has multiple mounting positions, including a first mounting position, a second mounting position and a third mounting position. The first mounting position is used to mount electrical components. The second mounting position can be selectively used to mount a step-up switch assembly or left empty. The third mounting position can be selectively used to mount a step-down switch assembly or left empty.

[0008] Multiple conductive components are provided at corresponding mounting positions and are used to electrically connect with the electrical components, the boost switch assembly, or the buck switch assembly to connect the electrical components, the boost switch assembly, or the buck switch assembly to a charging and discharging circuit.

[0009] Both the boost switch assembly and the buck switch assembly can connect or disconnect the windings of the motor assembly from the charging and discharging circuit.

[0010] In one alternative implementation, the electrical components are multiple, including:

[0011] The fast charging positive relay is used to connect the positive terminal of the charger and the power battery.

[0012] The main positive relay has one end connected to the end of the power battery connected to the fast charging positive relay, and the other end is used to connect to the load;

[0013] The main negative relay is used to connect the negative terminal of the power battery to the load.

[0014] The fast-charging negative relay has one end connected to the load end of the main negative relay, and the other end is used to connect to the negative terminal of the charger.

[0015] In one optional implementation, the moving contact of the main positive relay moves in the opposite direction to the moving contact of the main negative relay during the closing process.

[0016] In one alternative embodiment, the boost switch assembly includes a boost relay, one end of which is connected to the positive terminal of the charger, and the other end is connected to the winding of the motor assembly.

[0017] And / or, the step-down switch assembly includes a step-down relay, one end of which is used to connect to the winding of the motor assembly, and the other end is used to connect to the negative terminal of the power battery.

[0018] In one alternative embodiment, the boost switch assembly further includes a first capacitor and a capacitor switch relay, which are connected in series between the end of the boost relay that connects to the charger and the negative terminal of the power battery.

[0019] In one optional embodiment, the electrical component includes a fast-charging positive relay for connecting the positive terminals of both the charger and the power battery. The moving contact of the fast-charging positive relay moves in the opposite direction to the moving contact of the capacitor switch relay during the closing process.

[0020] In one optional embodiment, the mounting base is provided with a plurality of receiving chambers, with adjacent receiving chambers separated by partitions. Each mounting position includes a corresponding receiving chamber, and at least a portion of the partitions are provided with through-holes for allowing adhesive to flow between adjacent receiving chambers.

[0021] In one alternative embodiment, the power supply control device further includes a cold plate connected to the mounting base, wherein at least a portion of the end face of the conductive element is exposed on the surface of the mounting base near the cold plate.

[0022] And / or, at least one of the boost switch assembly and the buck switch assembly includes a Y capacitor, the Y capacitor being grounded.

[0023] In one optional embodiment, the mounting base is provided with a fixing hole for fasteners to pass through, and the power supply control device further includes an adapter and a connecting component. The connecting component passes through the cold plate, the adapter, and the mounting base and connects the three. The adapter is connected to the Y capacitor, and the adapter is provided with a mounting hole at the position corresponding to the fixing hole.

[0024] And / or, the power supply control device further includes a shunt, a portion of which is connected to the surface of the corresponding conductive element facing away from the cold plate, and another portion of which extends beyond the edge of the conductive element and is opposite to the cold plate.

[0025] In one optional embodiment, the power supply control device further includes:

[0026] A flexible circuit board, electrically connected to the electrical components, and configured to be selectively electrically connected to the boost switch assembly and / or the buck switch assembly;

[0027] The battery management module is electrically connected to the flexible circuit board.

[0028] In one optional embodiment, the power supply control device further includes a cover, which is connected to the mounting base, and the cover and the mounting base together form a receiving cavity, wherein the mounting positions are all located within the receiving cavity.

[0029] Secondly, this utility model also provides a battery pack, including the power supply control device as described above.

[0030] Thirdly, this utility model also provides a carrier, including the power supply control device as described above or the battery pack as described above.

[0031] The power supply control device provided by this utility model has a standardized mounting base, including a first mounting position, a second mounting position and a third mounting position. By selectively assembling a boost switch assembly, a buck switch assembly or leaving it empty, it can flexibly adapt to the needs of different voltage platforms.

[0032] The battery pack and carrier provided by this utility model, since they include the power supply control device provided by this utility model, also include all the advantages of the power supply control device mentioned above. Attached Figure Description

[0033] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0034] Figure 1 A schematic diagram of the structure of a power supply control device provided in an embodiment of this utility model;

[0035] Figure 2 for Figure 1Other angle views of the power supply control device shown;

[0036] Figure 3 for Figure 2 The diagram shows the structure of the power supply control device after the cold plate has been removed.

[0037] Figure 4 for Figure 3 The diagram shows the structure of the power supply control device after the mounting bracket has been removed.

[0038] Figure 5 A schematic diagram showing the installation status of the flexible circuit board and battery management module provided in this embodiment of the utility model;

[0039] Figure 6 A schematic diagram of the mounting position on the mounting base provided in an embodiment of this utility model;

[0040] Figure 7 A schematic diagram of the electrical components, boost switch assembly, and buck switch assembly installed on the mounting base according to an embodiment of this utility model;

[0041] Figure 8 A schematic diagram of the structure of the mounting base provided in the embodiment of this utility model;

[0042] Figure 9 This is a schematic diagram of the charging and discharging circuit provided in an embodiment of the present invention;

[0043] Figure 10 This is a schematic diagram showing the structure of the boost switch assembly and the buck switch assembly provided in this embodiment of the present invention, both arranged on the mounting base.

[0044] Figure 11 This is a schematic diagram of the structure of the booster switch assembly arranged in the mounting base according to an embodiment of the present utility model;

[0045] Figure 12 This is a schematic diagram of the structure of the lifting mounting base provided in this embodiment of the utility model without the arrangement of the boosting switch assembly and the bucking switch assembly;

[0046] Figure 13 This is a schematic diagram of the structure of the step-down switch assembly arranged in the mounting base according to an embodiment of the present utility model;

[0047] Figure 14 This is a schematic diagram of the structure of the flexible circuit board provided in an embodiment of the present utility model;

[0048] Figure 15 A schematic diagram showing the relative positional relationship between the cold plate and the Y capacitor provided in an embodiment of this utility model;

[0049] Figure 16 A schematic diagram of the structure of the fast-charging positive relay provided in this embodiment of the utility model;

[0050] Figure 17 Other angle views of the fast-charging positive relay provided in the embodiments of this utility model.

[0051] Explanation of reference numerals in the attached figures:

[0052] 1. Mounting base; 101. Mounting position; 1011. First mounting position; 1012. Second mounting position; 1013. Third mounting position; 102. Receiving chamber; 103. Partition; 1031. Connecting slot; 104. Fixing hole; 2. Electrical components; 201. Fast charging positive relay; 2011. Connection terminal; 2012. Sampling terminal; 2013. Control terminal; 202. Main positive relay; 203. Main negative relay; 204. Fast charging negative relay; 205. Fuse; 206. Pre-charge module; 2061. Pre-charge relay; 2062. Pre-charge resistor; 3. Boost switch assembly; 30 1. Boost relay; 302. First capacitor; 303. Capacitor switch relay; 4. Buck switch assembly; 401. Buck relay; 5. Conductive component; 501. Connection hole; 6. Charging / discharging circuit; 7. Motor; 8. Y capacitor; 9. Cold plate; 10. Power battery; 11. Charger; 12. Shunt; 13. Flexible circuit board; 1301. Clearance hole; 14. Battery management module; 1401. Sub-circuit board; 1402. Flexible connector; 15. Cover; 16. Adapter; 1601. Mounting hole; 17. Metal sheet; 18. Bushing; 19. Connection assembly; 20. Inverter. Detailed Implementation

[0053] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0054] The following is combined Figures 1 to 17 This describes the power supply control device provided in the embodiments of the present invention.

[0055] Specifically, the power supply control device includes a mounting base 1 and multiple conductive elements 5.

[0056] The mounting base 1 can be used to connect to the battery pack housing. For example, the mounting base 1 can be arranged inside the housing or on the top of the housing. The mounting base 1 has multiple mounting positions 101, including a first mounting position 1011, a second mounting position 1012 and a third mounting position 1013.

[0057] The first mounting position 1011 is used to mount an electrical component 2, such as, but not limited to, a relay, as discussed below. The second mounting position 1012 may be used to mount a step-up switch assembly 3 or left unused. The third mounting position 1013 may be used to mount a step-down switch assembly 4 or left unused.

[0058] Multiple conductive elements 5 are provided, each located at a corresponding mounting position 101, and are used to electrically connect with the electrical component 2, the boost switch assembly 3, or the buck switch assembly 4 to connect the electrical component 2, the boost switch assembly 3, or the buck switch assembly 4 to the charging / discharging circuit 6. Optionally, the conductive element 5 is a metal busbar, such as, but not limited to, a copper busbar. Optionally, the conductive element 5 and the mounting base 1 are integrally injection molded, for example, through insert injection molding.

[0059] It is understandable that each mounting position 101 is pre-installed with a corresponding conductive component 5. After the electrical component 2, the boost switch assembly 3 or the buck switch assembly 4 are arranged in the corresponding mounting position 101, they can be connected to the corresponding conductive component to access the charging and discharging circuit 6.

[0060] The boost switch assembly 3 can connect or disconnect the windings of the motor assembly from the charging and discharging circuit 6. In other words, the boost switch assembly 3 can connect the motor assembly to the charging and discharging circuit 6 and make the motor assembly boost the voltage during the charging process or depress the voltage during the discharging process.

[0061] The step-down switch assembly 4 can connect or disconnect the windings of the motor assembly from the charging and discharging circuit 6. That is, the step-down switch assembly 4 can connect the motor assembly to the charging and discharging circuit 6 and make the motor assembly step down the voltage during the charging process or step up the voltage during the discharging process.

[0062] In this embodiment, the mounting base 1 is provided with standardized mounting positions 101, including a first mounting position 1011, a second mounting position 1012 and a third mounting position 1013. By selectively assembling the boost switch assembly 3 and the buck switch assembly 4 or leaving them empty, it can flexibly adapt to the needs of different voltage platforms.

[0063] For example, installing the boost switch assembly 3 can match the high-voltage requirements of the platform, so that the power supply control device can be adapted to the high-voltage platform. Installing the buck switch assembly 4 can match the low-voltage requirements of the platform, so that the power supply control device can be adapted to the low-voltage platform. Similarly, leaving the second mounting position 1012 and the third mounting position 1013 empty can also make the power supply control device adaptable to the low-voltage platform.

[0064] In addition, by arranging the boost switch assembly 3 and the buck switch assembly 4 in the second mounting position 1012 and the third mounting position 1013 respectively, the high voltage or low voltage requirements of the platform can be matched, so that the power supply control device can be adapted to the medium voltage platform.

[0065] By reusing the motor assembly (boost / buck mode switching), the circuit voltage can be adjusted during charging or discharging, reducing the need for additional voltage conversion devices and lowering hardware complexity.

[0066] In summary, this embodiment achieves platform universality for the power supply control device through the design of "standardized mounting base + optional functional modules", solves the problem of multi-voltage platform adaptation, and combines economy, flexibility and scalability.

[0067] refer to Figure 9 As shown, in some embodiments provided by this utility model, there are multiple electrical components, including a fast charging positive relay 201, a main positive relay 202, a main negative relay 203, and a fast charging negative relay 204.

[0068] The fast-charging positive relay 201 is used to connect the positive terminals of both the charger 11 and the power battery 10. That is, the two connection terminals 2011 of the fast-charging positive relay 201 are respectively connected to the positive terminals of the charger 11 and the power battery 10.

[0069] One end of the main positive relay 202 is connected to one end of the fast charging positive relay 201 that is connected to the power battery 10, and the other end is used to connect to the load. That is, one connection terminal 2011 of the main positive relay 202 is connected to the connection terminal 2011 of the fast charging positive relay 201 that is connected to the power battery 10, and the other connection terminal 2011 of the main positive relay 202 is connected to the load.

[0070] Optionally, the load includes a motor assembly, which includes a motor 7 and an inverter 20 connected in series with the motor 7. The inverter 20 can convert the DC power from the power battery 10 into AC power and transmit it to the motor 7. The main positive relay 202 is connected to the positive terminal of the inverter 20.

[0071] The main negative relay 203 is used to connect the negative terminal of the power battery 10 to the load. That is, one connection terminal 2011 of the main negative relay 203 is connected to the negative terminal of the power battery 10, and the other connection terminal 2011 is connected to the load, that is, to the negative terminal of the inverter 20.

[0072] One end of the fast-charging negative relay 204 is connected to one end of the main negative relay 203 connected to the load, and the other end is used to connect to the negative terminal of the charger 11. That is, one connection terminal 2011 of the fast-charging negative relay 204 is connected to the connection terminal 2011 of the main negative relay 203 connected to the load, and the other connection terminal 2011 of the fast-charging negative relay 204 is used to connect to the negative terminal of the charger 11.

[0073] In this embodiment, during charging, the fast charging positive relay 201, fast charging negative relay 204 and main negative relay 203 are closed; during driving, the main positive relay 202 and main negative relay 203 are closed.

[0074] Among them, the main negative relay 203 serves both the drive and charging circuits. The fast charging negative relay 204 extends the path during charging, which can reduce the number of redundant relays.

[0075] It is understood that, in this embodiment, relays that are connected can be connected to each other via conductive element 5.

[0076] In some embodiments provided by this utility model, the moving contact of the main positive relay 202 moves in the opposite direction to the moving contact of the main negative relay 203 during the closing process.

[0077] For example, both the main positive relay 202 and the main negative relay 203 are arranged vertically, meaning that the moving contact of one of the main positive relay 202 and the main negative relay 203 moves upward to close, while the moving contact of the other moves downward to close. It can be understood that the main positive relay 202 and the main negative relay 203 can also be arranged horizontally, in which case the moving contact moves horizontally.

[0078] In this embodiment, by making the closing direction of the moving contact of the main positive relay 202 opposite to that of the moving contact of the main negative relay 203, since the direction of vibration or impact force is usually consistent (such as up-and-down bumping or left-and-right swaying), the moving contacts that close in opposite directions are affected by inertia and have opposite directions, which greatly reduces the probability of simultaneous closing, improves the reliability of the power supply control device, and makes the power supply control device more adaptable to complex working conditions with high vibration and multiple impacts.

[0079] Optionally, to facilitate the uniform arrangement of conductive components and flexible circuit boards, the first end of the main positive relay 202 and the first end of the main negative relay 203 face the same direction, and both first ends are provided with corresponding connection terminals 2011. The second end of the main positive relay 202 and the second end of the main negative relay 203 face the same direction, and both second ends are provided with corresponding sampling terminals 2012 and control terminals 2013.

[0080] refer to Figure 9 As shown, in some embodiments provided by this utility model, the boost switch assembly 3 includes a boost relay 301. One end of the boost relay 301 is used to connect to the positive terminal of the charger 11, and the other end is used to connect to the winding of the motor assembly.

[0081] Specifically, one connection terminal 2011 of the boost relay 301 is used to connect to the positive terminal of the charger 11. For example, this connection terminal 2011 can be connected to the connection terminal 2011 of the fast charging positive relay 201 connected to the charger 11. The other connection terminal 2011 of the boost relay 301 is used to connect to the three-phase windings of the motor assembly. For example, this connection terminal 2011 can be connected to the three-phase center point, the three-phase busbar, or any point of the three-phase windings.

[0082] In this embodiment, the motor assembly can be used to boost the voltage during charging. Specifically, the boost relay 301, main positive relay 202, main negative relay 203, and fast-charging negative relay 204 are closed. The positive current passes through the boost relay 301, the windings of the motor 7, the inverter 20, and the main positive relay 202 to enter the power battery 10, while the negative current passes through the power battery 10, the main negative relay 203, and the fast-charging negative relay 204 to enter the charger 11.

[0083] Furthermore, during the discharge process, the motor assembly can be used to reduce the voltage. Specifically, this involves closing the boost relay 301, the main positive relay 202, the main negative relay 203, and the fast-charging negative relay 204. The relays operate in the same state as during the charging process, and the direction of current flow can be analyzed similarly.

[0084] This setup allows for voltage conversion using the motor assembly, reducing cost and weight, and the same relay topology supports various operating conditions such as boost charging, buck power supply, and normal drive.

[0085] refer to Figure 9 As shown, in some embodiments provided by this utility model, the step-down switch assembly 4 includes a step-down relay 401, one end of which is used to connect to the winding of the motor assembly, and the other end is used to connect to the negative terminal of the power battery 10.

[0086] Specifically, one connection terminal 2011 of the step-down relay 401 is used to connect to the negative terminal of the power battery 10. For example, this connection terminal 2011 can be connected to the connection terminal 2011 of the main negative relay 203 connected to the power battery 10. The other connection terminal 2011 of the step-down relay 401 is used to connect to the three-phase windings of the motor assembly. For example, this connection terminal 2011 can be connected to the three-phase center point, the three-phase busbar, or any point of the three-phase windings.

[0087] Specifically, the step-down relay 401 is connected to the motor assembly's connection terminal 2011, and the step-up relay 301 is connected to the motor assembly's connection terminal 2011.

[0088] In this embodiment, the motor assembly can be used to step down the voltage during charging. Specifically, the fast-charging positive relay 201, fast-charging negative relay 204, and step-down relay 401 are closed, while the main positive relay 202 and main negative relay 203 are opened. The positive current enters the power battery 10 through the positive terminal of the charger 11 and the fast-charging positive relay 201, while the negative current enters the charger 11 through the negative terminal of the power battery 10, the step-down relay 401, the windings of the motor 7, the inverter 20, and the fast-charging negative relay 204.

[0089] During the discharge process, the motor assembly can be used to boost the voltage. Specifically, the fast charging positive relay 201, fast charging negative relay 204 and buck relay 401 are closed, and the main positive relay 202 and main negative relay 203 are disconnected.

[0090] This setup allows for voltage conversion using the motor assembly, reducing cost and weight, and the same relay topology supports various operating conditions such as buck charging, boost power supply, and normal drive.

[0091] refer to Figure 9 As shown, in some embodiments provided by this utility model, the boost switch assembly 3 further includes a first capacitor 302 and a capacitor switch relay 303.

[0092] The first capacitor 302 and the capacitor switch relay 303 are connected in series between the end of the boost relay 301 that connects the charger 11 and the negative terminal of the power battery 10.

[0093] For example, one connection terminal 2011 of the capacitor switch relay 303 is connected to the connection terminal 2011 of the main negative relay 203 connected to the power battery 10, and the other connection terminal 2011 of the capacitor switch relay 303 is connected to the connection terminal 2011 of the first capacitor 302. The other connection terminal 2011 of the first capacitor 302 is connected to the connection terminal 2011 of the fast charging relay connected to the charger 11. Of course, the positions of the capacitor switch relay 303 and the first capacitor 302 can be interchanged.

[0094] In this embodiment, before using the motor assembly for boost charging, the capacitor switch relay 303 can be closed, and the first capacitor 302 can be charged through the power battery 10 before boost charging. This configuration allows the first capacitor 302 to suppress instantaneous voltage surges during charger 11 startup, protecting power devices such as the relay contacts, power battery 10, and inverter 20.

[0095] refer to Figure 9As shown, optionally, the multiple electrical components 2 also include a pre-charge module 206. The pre-charge module 206 is connected in parallel with the main positive relay 202. Before closing the fast charging relay to charge the power battery 10, the pre-charge module 206 can be opened first to charge the corresponding capacitor, and then the fast charging positive relay 201 can be opened to charge, so as to avoid the instantaneous voltage surge when the charger 11 starts from impacting the relay contacts or the power battery 10.

[0096] For example, the precharge module 206 includes a resistor and a precharge relay 2061 connected in series.

[0097] In some embodiments provided by this utility model, multiple electrical components 2 also include a fuse 205. The fast-charging positive relay 201 and the main positive relay 202 are both connected to the power battery 10 via the fuse 205. When an abnormal situation occurs during charging or discharging that causes excessive current, such as a short circuit in the electrical component 2 or a circuit fault, the fuse 205 will melt due to overheating, quickly disconnecting the circuit connection of the power battery 10 and preventing excessive current from damaging the power battery 10 and other related electrical equipment.

[0098] In some embodiments provided by this utility model, the electrical component 2 includes a fast charging positive relay 201, which is used to connect the positive terminals of the charger 11 and the power battery 10. For a detailed description, please refer to the above section.

[0099] Furthermore, the moving contact of the fast charging positive relay 201 moves in the opposite direction to the moving contact of the capacitor switch relay 303 during the closing process.

[0100] For example, both the fast-charging positive relay 201 and the capacitor switch relay 303 are arranged vertically, meaning that the moving contact of one of them moves upward to close, while the moving contact of the other moves downward to close. It can be understood that the fast-charging positive relay 201 and the capacitor switch relay 303 can also be arranged horizontally, in which case the moving contact moves horizontally.

[0101] If the moving contacts of the two relays are arranged in the same direction, vehicle vibration or impact may cause both to close unexpectedly at the same time, forming a dangerous circuit.

[0102] In this embodiment, by making the closing direction of the moving contact of the fast charging positive relay 201 opposite to that of the moving contact of the capacitor switch relay 303, since the direction of vibration or impact force is usually consistent (such as up-and-down bumping or left-and-right swaying), the moving contacts that close in opposite directions are affected by inertia and have opposite directions, which greatly reduces the probability of simultaneous closing, improves the reliability of the power supply control device, and makes the power supply control device more adaptable to complex working conditions with high vibration and multiple impacts.

[0103] Optionally, to facilitate the unified arrangement of conductive components and flexible circuit boards, the first end of the fast-charging positive relay 201 and the first end of the capacitive switch relay 303 face the same direction, and both first ends are provided with corresponding connection terminals 2011. The second end of the fast-charging positive relay 201 and the second end of the capacitive switch relay 303 face the same direction, and both second ends are provided with corresponding sampling terminals 2012 and control terminals 2013.

[0104] refer to Figures 16-17 As shown, in some embodiments provided by this utility model, the fast charging positive relay 201 has a connection terminal 2011, a sampling terminal 2012, and a control terminal 2013. For example, the connection terminal 2011 is disposed at one end of the fast charging positive relay 201, and the sampling terminal 2012 and the control terminal 2013 are disposed at the other end of the fast charging positive relay 201.

[0105] There are two connecting terminals 2011, which are connected to the moving contact and the stationary contact respectively. The connecting terminals 2011 are used to connect different conductive parts 5.

[0106] The sampling terminal 2012 is electrically connected to the moving or stationary contact, and the control terminal 2013 is electrically connected to the electromagnetic component. Both the sampling terminal 2012 and the control terminal 2013 are used to connect to the flexible circuit board 13 so that the flexible circuit board 13 can collect the voltage signal of the fast charging positive relay 201 or transmit control signals to the fast charging positive relay 201.

[0107] It is understood that the electrical component 2 or relay involved in this application may adopt the same structure as the fast charging positive relay 201.

[0108] Optionally, refer to Figure 17 As shown, the connection terminal 2011 includes a first shaft segment and a second shaft segment. One end of the first shaft segment is located inside the fast-charging positive relay 201, and the other end protrudes from the end face of the fast-charging positive relay 201. The second shaft segment is connected to the end of the first shaft segment that protrudes from the end face of the fast-charging positive relay 201. The cross-sectional area of ​​the first shaft segment is larger than the cross-sectional area of ​​the second shaft segment.

[0109] Correspondingly, the conductive component 5 is provided with a connecting hole 501 for the second shaft segment to be inserted. The conductive component 5 abuts against the end face of the first shaft segment, and the second shaft segment is welded to the wall of the connecting hole 501.

[0110] In this embodiment, along the axial direction of the connecting terminal 2011, the first shaft segment can block the gap between the second shaft segment and the connecting hole 501, which can prevent the welding heat from penetrating and affecting the housing of the fast charging relay.

[0111] refer to Figures 6-8As shown, in some embodiments provided by this utility model, the mounting base 1 is provided with a plurality of receiving chambers 102, and two adjacent receiving chambers 102 are separated by a partition 103.

[0112] Each mounting position 101 includes a corresponding receiving chamber 102; for example, a mounting position 101 may include one or more receiving chambers 102. At least a portion of the partition 103 has a through-type communicating groove 1031 for allowing adhesive to flow between adjacent receiving chambers 102. The adhesive may be glue.

[0113] In this embodiment, adhesive can be filled into the receiving chamber 102. By providing a connecting groove 1031 on the partition 103, the adhesive can flow between two adjacent receiving chambers 102. After the adhesive solidifies, it can connect the components, such as relays, in the two adjacent receiving chambers 102 into one unit.

[0114] In this embodiment, by providing a connecting groove 1031 on the partition 103, the adhesive connects the components in adjacent receiving chambers 102 into one unit, thereby effectively enhancing the connection strength between the components and making them less prone to relative displacement or loosening when subjected to external impact or vibration, thereby improving the stability of the entire installation structure and helping to ensure the normal operation of the circuit system.

[0115] Furthermore, the placement of the receiving chamber 102 provides a clear installation location for the components, facilitating installation and positioning by workers or robots, thus improving installation efficiency. Simultaneously, the use of adhesive further secures the components, preventing positional shifts after installation and ensuring accuracy and consistency.

[0116] Optionally, refer to Figure 7 and Figure 8 As shown, the receiving chamber 102 has an opening through which the electrical component 2, the boost switch assembly 3, or the buck switch assembly 4 can pass, so as to facilitate the installation and removal of the electrical component 2, the boost switch assembly 3, or the buck switch assembly 4.

[0117] Furthermore, the conductive element 5 is disposed at the end of the receiving chamber 102 away from the opening, for example, the opening and the conductive element are respectively disposed at the upper and lower ends of the receiving chamber 102. The end face of one end of the conductive element 5 faces into the receiving chamber 102 and is used to connect with a corresponding element inside the receiving chamber 102, and the end face of the other end of the conductive element 5 is exposed on the surface of the mounting base 1 and is used to fit against the cold plate 9.

[0118] In this embodiment, the conductive component 5 is placed at the end of the receiving chamber 102 away from the opening. This does not affect the installation and removal of the component through the opening, and makes full use of the space of the receiving chamber 102. This makes the connection layout of the conductive component 5 with the component and the cold plate 9 more reasonable and compact, effectively saving installation space and facilitating the miniaturization design of the entire device.

[0119] Furthermore, one end of the conductive component 5 faces the receiving chamber 102 and is connected to the corresponding component, ensuring a good electrical connection, reducing contact resistance, and lowering the risk of overheating and failure due to poor contact. Simultaneously, its other end is attached to the cold plate 9, ensuring stable heat dissipation, thereby ensuring reliable operation of the entire system in terms of both electrical and heat dissipation performance.

[0120] In some embodiments provided by this utility model, the power supply control device further includes a cold plate 9, which includes, but is not limited to, a liquid cooling plate and a metal heat sink. The cold plate 9 is connected to the mounting base 1, for example, by bonding, screwing, or snapping the cold plate 9 to the mounting base 1.

[0121] At least a portion of the end face of the conductive element 5 is exposed on the surface of the mounting base 1 near the cold plate 9, and the conductive element 5 is used to adhere to the cold plate 9. It is understood that the conductive element 5 can be directly adhered to the cold plate 9, or it can be indirectly adhered, for example, by providing an insulating film between the conductive element 5 and the cold plate 9.

[0122] In this embodiment, electrical components 2, boost switch assembly 3, and buck switch assembly 4 generate heat during operation. If this heat cannot be dissipated in time, the component temperature will rise, affecting its performance and lifespan. Conductive component 5, as the current carrier, also generates heat during operation. The cold plate 9 (e.g., liquid-cooled plate 9) has excellent heat dissipation performance. The conductive component 5 is in contact with the cold plate 9, allowing the generated heat to be quickly conducted to the cold plate 9. The heat is then dissipated through the cooling mechanism of the cold plate 9 (e.g., coolant circulation), ensuring that the power supply control device operates in a suitable temperature environment and improving the system's stability and reliability.

[0123] It is understandable that multiple conductive elements 5 are close to the end faces exposed on the mounting base 1 and are coplanar, so that multiple conductive elements 5 are on the same plane and thus share the cold plate 9.

[0124] In some embodiments provided by this utility model, at least one of the boost switch assembly 3 and the buck switch assembly includes a Y capacitor 8, which is grounded. For example, Figure 9 As shown, the connection terminal 2011 connecting the boost relay 301 and the fast charging relay is connected to a Y capacitor 8, and the connection terminal 2011 connecting the buck relay 401 and the main negative relay 203 is connected to a Y capacitor 8.

[0125] In this embodiment, various high-frequency noises and electromagnetic interferences are generated during circuit operation, especially during the operation of the switching components. Grounding the Y capacitor 8 can guide these common-mode interference currents to ground, effectively reducing the impact of electromagnetic interference on surrounding electronic equipment and circuits.

[0126] In addition, when instantaneous voltage fluctuations or high-frequency noise occur in the circuit, the Y capacitor 8 can quickly absorb or release charge, which plays a role in smoothing the voltage and making the voltage boosting and bucking process more stable, thereby improving the working stability and reliability of the switching components and the entire power supply control device.

[0127] refer to Figure 4 as well as Figure 15 As shown, in some embodiments of this utility model, the mounting base 1 is provided with a fixing hole 104 for fasteners to pass through. For example, the fastener passes through the fixing hole 104 and is connected to the battery pack housing. Optionally, the fastener can be a threaded fastener such as a bolt or screw, or an anchor such as a rivet.

[0128] Furthermore, the power supply control device also includes an adapter 16 and a connection assembly 19.

[0129] The connecting component 19 passes through the cold plate 9, the adapter 16, and the mounting base 1, and connects the three together. For example, the connecting component 19 can be a threaded fastener.

[0130] The adapter 16 is connected to the Y capacitor 8. Specifically, the Y capacitor 8 is mounted on the adapter 16 and electrically connected to the adapter 16. The adapter 16 has a mounting hole 1601 at the position corresponding to the fixing hole 104.

[0131] In this embodiment, a fastener passes through the fixing hole 104 on the mounting base 1 and is connected to the battery pack housing. Utilizing the grounding characteristic of the battery pack housing, the fastener becomes a grounding point. Simultaneously, the fastener passes through the mounting hole 1601 on the adapter 16, enabling the adapter 16 to also be grounded. This allows the Y capacitor 8, which is electrically connected to the adapter 16, to be successfully grounded, ensuring that the Y capacitor 8 can properly perform its functions such as suppressing electromagnetic interference and improving safety.

[0132] The cold plate 9 is connected to the adapter 16 via the connecting component 19, and the connecting component 19 can conduct electricity between the two, thereby grounding the cold plate 9. This helps to release any current that may exist on the cold plate 9, further improving system safety and electromagnetic compatibility.

[0133] Meanwhile, in this embodiment, the connecting component 19 passes through the cold plate 9, the adapter 16 and the mounting base 1, which can form a mechanical connection, improve the overall strength of the power supply control device, and also connect the cold plate 9 and the adapter 16 to form a ground, eliminating the need to set up an additional grounding line for the cold plate 9, thus improving the structural compactness of the power supply control device.

[0134] Optionally, the mounting base 1 is embedded with a bushing 18, the central hole of which forms the fixing hole 104. The mounting base 1 is fastened to the battery pack housing through the central hole of the bushing 18, achieving both mechanical fixation and electrical grounding. The bushing 18 can prevent the mounting base 1 from cracking due to direct pressure from fasteners. In addition, the adapter 16 can form a conductive state with the fasteners through the bushing 18, improving the reliability of the grounding of the adapter 16.

[0135] refer to Figure 15 As shown, in some embodiments provided by this utility model, the power supply control device further includes a shunt 12, a portion of which is connected to the surface of the corresponding conductive element 5 away from the cold plate 9, and another portion of which extends beyond the edge of the conductive element 5 and is opposite to the cold plate 9.

[0136] In this embodiment, the shunt 12 is connected to the side of the conductive element 5 (such as a copper busbar) away from the cold plate 9 and is directly connected in series in the high-voltage circuit. In addition, a part of the shunt 12 extends beyond the edge of the conductive element 5 and is non-contact with the cold plate 9 to form a heat dissipation space or reserve a safe distance, so that the cold plate 9 can cool the shunt 12, reduce the temperature effect on the shunt 12, and improve the reliability and performance of the shunt 12.

[0137] In some embodiments provided by this utility model, the power supply control device further includes a flexible circuit board 13 and a battery management module 14.

[0138] The flexible circuit board 13 is electrically connected to the electrical component 2 and is configured to selectively connect to the boost switch assembly 3 and / or the buck switch assembly 4. For example, the flexible circuit board 13 has corresponding docking ports at positions opposite to the electrical component 2, the boost switch assembly 3, and the buck switch assembly 4. Optionally, the flexible circuit board 13 is located at the end of the electrical component 2, the boost switch assembly 3, or the buck switch assembly 4 away from the conductive element 5.

[0139] The battery management module 14 is electrically connected to the flexible circuit board 13. For example, the battery management module 14 is located on the side of the flexible circuit board 13 away from the electrical component 2, the boost switch assembly 3, or the buck switch assembly 4.

[0140] In this embodiment, the flexible circuit board 13 serves as a bridge between the high-voltage and low-voltage systems, connecting the battery management module 14 with electrical components 2, the boost switch assembly 3, and the buck switch assembly 4. The flexible circuit board 13 is positioned on the side of the components away from the conductive element 5, thus avoiding high-voltage interference and saving space. Replacing bulky wiring harnesses, the flexible circuit board 13 is better adapted to vibration environments.

[0141] The battery management module 14 is fixed to the back of the flexible circuit board 13, directly reads the status signals (such as temperature and voltage) of the components and switching assemblies, realizes real-time monitoring, and can control the on / off state of the components and switching assemblies.

[0142] Optionally, a clearance hole 1301 is provided on the flexible circuit board 13 at a position opposite to the electrical component 2, the boost switch assembly 3, or the buck switch assembly 4. For example, the clearance hole 1301 is disposed opposite to the terminal of the electrical component 2, the boost switch assembly 3, or the buck switch assembly 4, where the terminal is a control terminal 2013 or a sampling terminal 2012.

[0143] This configuration, with the clearance hole 1301 positioned opposite the terminal, allows the terminal to pass through the clearance hole 1301, facilitating alignment and positioning of the terminal with the corresponding port on the flexible circuit board 13. This ensures accurate soldering of the metal sheet 17 to the ports of the terminal and the flexible circuit board 13 during soldering, improving soldering accuracy and reliability, reducing soldering defects such as incomplete soldering and missed soldering, and guaranteeing the stability of the electrical connection.

[0144] Optionally, the battery management module 14 includes a sub-circuit board 1401 and a flexible connector 1402, wherein there are at least two sub-circuit boards 1401, and the flexible connector 1402 is electrically connected between the two sub-circuit boards 1401.

[0145] With this arrangement, multiple sub-circuit boards 1401 are distributed in a dispersed manner. Compared to a single large-size circuit board, each sub-circuit board 1401 is smaller in size. When subjected to external impact or stress caused by factors such as thermal expansion and contraction, the stress borne by each individual sub-circuit board 1401 is relatively small due to its small area, making it less prone to cracking.

[0146] Moreover, the flexible connector 1402 can buffer and disperse stress to a certain extent. When the sub-circuit board 1401 undergoes slight displacement or deformation due to various factors, the flexible connector 1402 can adapt through its own deformation, reducing mutual pulling and stress concentration between the sub-circuit boards 1401, thereby reducing the risk of breakage.

[0147] Furthermore, at least two sub-circuit boards 1401 can be arranged coplanarly, parallel, or at an angle.

[0148] In some embodiments provided by this utility model, the power supply control device further includes a cover 15, which is connected to the mounting base 1, and the cover 15 and the mounting base 1 together form a receiving cavity, and the mounting positions 101 are all located in the receiving cavity.

[0149] In this embodiment, the accommodating cavity provides a closed space for the internal components of the power supply control device, which can effectively prevent dust, moisture, debris and other substances from entering, and avoid these substances from causing corrosion, short circuits and other damage to electrical components 2, boost switch assembly 3, buck switch assembly 4, etc., thereby improving the reliability and stability of the device and extending its service life.

[0150] Alternatively, the cover 15 and the mounting base 1 may be connected by adhesive, snap-fit, or screw.

[0151] This utility model also provides a battery pack in this embodiment.

[0152] Specifically, the battery pack includes the power supply control device described above.

[0153] The battery pack includes a power supply control device, and therefore also includes all the advantages of the power supply control device mentioned above, so it will not be elaborated further.

[0154] This utility model also provides a vehicle in its embodiments.

[0155] Specifically, the vehicle includes a power supply control device as described above or a battery pack as described above.

[0156] The vehicle includes a power supply control device, and therefore also includes all the advantages of the power supply control device mentioned above, so it will not be elaborated further.

[0157] In addition, vehicles include, but are not limited to, vehicles, aircraft, and boats.

[0158] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A power supply control device characterized by comprising: include: The mounting base (1) has multiple mounting positions (101), including a first mounting position (1011), a second mounting position (1012) and a third mounting position (1013). The first mounting position (1011) is equipped with an electrical component (2). The second mounting position (1012) may be selectively equipped with a step-up switch assembly (3) or left empty. The third mounting position (1013) may be selectively equipped with a step-down switch assembly (4) or left empty. Multiple conductive elements (5) are provided in the corresponding mounting positions (101) and are used to electrically connect with the electrical element (2), the boost switch assembly (3) or the buck switch assembly (4) to connect the electrical element (2), the boost switch assembly (3) or the buck switch assembly (4) to the charging and discharging circuit (6); Both the boost switch assembly (3) and the buck switch assembly (4) can connect or disconnect the windings of the motor assembly from the charging and discharging circuit (6).

2. The power supply control device according to claim 1, characterized by The electrical components (2) are multiple, including: A fast-charging positive relay (201) is used to connect the positive terminals of the charger (11) and the power battery (10); The main positive relay (202) has one end connected to the end of the power battery (10) connected to the fast charging positive relay (201), and the other end is used to connect to the load; The main negative relay (203) is used to connect the negative terminal of the power battery (10) to the load; The fast charging negative relay (204) has one end connected to the load end of the main negative relay (203), and the other end is used to connect to the negative terminal of the charger (11).

3. The power supply control device according to claim 2, characterized by The moving contact of the main positive relay (202) moves in the opposite direction to the moving contact of the main negative relay (203) during the closing process.

4. The power supply control device according to claim 1, characterized by The boost switch assembly (3) includes a boost relay (301), one end of which is used to connect to the positive terminal of the charger (11), and the other end is used to connect to the winding of the motor assembly. And / or, the step-down switch assembly (4) includes a step-down relay (401), one end of which is used to connect to the winding of the motor assembly, and the other end is used to connect to the negative terminal of the power battery (10).

5. The power supply control device according to claim 4, wherein The boost switch assembly (3) also includes a first capacitor (302) and a capacitor switch relay (303), which are connected in series between the end of the boost relay (301) that connects to the charger (11) and the negative terminal of the power battery (10).

6. The power supply control device according to claim 5, wherein The electrical component (2) includes a fast-charging positive relay (201) for connecting the positive terminals of the charger (11) and the power battery (10). The moving contact of the fast-charging positive relay (201) moves in the opposite direction to the moving contact of the capacitor switch relay (303) during the closing process.

7. The power supply control device according to any one of claims 1 to 6, characterized by The mounting base (1) is provided with a plurality of receiving chambers (102), and two adjacent receiving chambers (102) are separated by a partition (103). Each mounting position (101) includes a corresponding receiving chamber (102). At least a portion of the partition (103) is provided with a through groove (1031) for allowing the adhesive in two adjacent receiving chambers (102) to flow.

8. The power supply control device according to any one of claims 1 to 6, characterized by The power supply control device also includes a cold plate (9), which is connected to the mounting base (1), and at least a portion of the end face of the conductive element (5) is exposed on the surface of the mounting base (1) near the cold plate (9); And / or, at least one of the boost switch assembly (3) and the buck switch assembly includes a Y capacitor (8) which is grounded.

9. The power supply control device according to claim 8, wherein The mounting base (1) is provided with a fixing hole (104) for fasteners to pass through. The power supply control device also includes an adapter (16) and a connecting component (19). The connecting component (19) passes through the cold plate (9), the adapter (16) and the mounting base (1) and connects the three. The adapter (16) is connected to the Y capacitor (8). The adapter (16) is provided with a mounting hole (1601) at the position corresponding to the fixing hole (104). And / or, the power supply control device further includes a shunt (12), a portion of which is connected to the surface of the corresponding conductive element (5) away from the cold plate (9), and another portion of which extends beyond the edge of the conductive element (5) and is opposite to the cold plate (9).

10. The power supply control device according to any one of claims 1 to 6, characterized by The power supply control device also includes: A flexible circuit board (13) is electrically connected to the electrical component (2) and configured to be selectively electrically connected to the boost switch assembly (3) and / or the buck switch assembly (4); The battery management module (14) is electrically connected to the flexible circuit board (13).

11. The power supply control device according to any one of claims 1 to 6, characterized by The power supply control device also includes a cover (15), which is connected to the mounting base (1), and the cover (15) and the mounting base (1) together form a receiving cavity, and the mounting positions (101) are all located in the receiving cavity.

12. A battery pack, characterized by, Includes the power supply control device as described in any one of claims 1-11.

13. A carrier, characterized by Includes the power supply control device as described in any one of claims 1-11 or the battery pack as described in claim 12.

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