Battery BDU integrated device

Abstract

The utility model relates to a battery BDU integrated device which is installed in an electrical system of a vehicle, the BDU integrated device at least comprises an integrated panel, a wireless transmission module and a BDU unit, one side of the integrated panel is at least provided with a signal receiving and transmitting module and a high-voltage interface module, the signal receiving and transmitting module is in signal connection with the electrical system and the wireless transmission module, and the high-voltage interface module is in signal connection with the BDU unit. The signal receiving module is used for receiving parameter signals transmitted by an electrical system and sending the parameter signals to the wireless transmission module; the high-voltage interface module is electrically connected to the BDU unit so as to respond to a control signal transmitted by the BDU unit; the other side of the integrated panel is at least provided with a wireless transmission module and a BDU unit, and the wireless transmission module is electrically connected to the BDU unit and used for transmitting the received parameter signals to the BDU unit; and the BDU unit controls the on-off of the high-voltage interface module according to the parameter signal. According to the utility model, the wireless transmission module is adopted to replace the traditional BMS, so that the internal space of the battery pack can be greatly saved, and meanwhile, the risk of wire breakage or poor interface contact can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy batteries, in particular to a battery BDU integration device. Background Art

[0002] At present, in existing new energy batteries, the BMS (Battery Management System) is generally arranged separately from the BDU (Battery Disconnect Unit); the plug-in panel is generally integrated with the box body and arranged separately from the BDU. However, since the plug-in panel, BMS and BDU of this battery pack are arranged separately, the system integration degree is low, occupying more space of the battery pack, and thus the BOM (Bill of Materials) of the battery pack is more.

[0003] Although there are some highly integrated BDU structures on the market, there are position deviations when the BDU and the plug-in panel are assembled, resulting in increased installation difficulty and reduced assembly efficiency. And with long-term operation in a complex environment, wire breakage or poor interface contact may occur, which are likely to cause the power battery system to stop working. In this case, the power battery needs to be replaced as a whole, bringing potential economic losses.

[0004] Therefore, there is a need for a battery BDU integration device that can both save the internal space of the battery pack, reduce the installation difficulty, improve the assembly efficiency, and at the same time avoid the risk of wire breakage or poor interface contact. Summary of the Invention

[0005] In order to overcome the deficiencies of the prior art, the utility model provides a battery BDU integration device.

[0006] The technical solution of the utility model is as follows:

[0007] A battery BDU integration device is installed in the electrical system of a vehicle. The BDU integration device at least includes an integration panel, a wireless transmission module, and a BDU unit.

[0008] At least a signal transceiver module and a high-voltage interface module are installed on one side of the integration panel. The signal transceiver module is signal-connected to the electrical system and the wireless transmission module to receive the parameter signal transmitted by the electrical system and send the parameter signal to the wireless transmission module; the high-voltage interface module is electrically connected to the BDU unit to respond to the control signal transmitted by the BDU unit.

[0009] On the other side of the integrated panel, at least the wireless transmission module and the BDU unit are installed. The wireless transmission module is electrically connected to the BDU unit to transmit the received parameter signal to the BDU unit.

[0010] The BDU unit controls the on / off of the high-voltage interface module according to the parameter signal.

[0011] As a further improvement of the present invention, the BDU unit includes a housing, a BDU electrical component module and a copper busbar module arranged in the housing. The BDU electrical component module is electrically connected to the copper busbar module, and the wireless transmission module is housed in the housing.

[0012] As a further improvement of the present invention, at least two parallel fixing rods are provided on the integrated panel, and a guiding groove is provided at the bottom of the housing. The number of the guiding grooves is the same as that of the fixing rods and they correspond to each other one by one.

[0013] As a further improvement of the present invention, a first nut is provided on the fixing rod, a claw disc steel sleeve is provided on the housing above the guiding groove, a through hole is provided on the claw disc steel sleeve, an annular groove is provided around the through hole, the through hole and the annular groove are concentric, the first nut is snapped into the annular groove, and a first bolt is provided between the first nut and the claw disc steel sleeve. The first bolt passes through the through hole and is fixed to the first nut.

[0014] As a further improvement of the present invention, the bottom surface of the housing is higher than the bottom surface of the fixing rod.

[0015] As a further improvement of the present invention, a plurality of anti-fooling holes are provided on the integrated panel, and a plurality of anti-fooling bumps are provided on the housing. The number of the anti-fooling holes is the same as that of the anti-fooling bumps and they correspond to each other one by one.

[0016] As a further improvement of the present invention, the high-voltage interface module includes a fixing base, a first pin and a second pin are arranged in the fixing base. The fixing base is fixed to the integrated panel, and both the first pin and the second pin pass through the integrated panel and are inserted into the housing. The first pin and the second pin are horizontally misaligned in the direction perpendicular to the insertion direction.

[0017] As a further improvement of the present invention, a limiting member is arranged in the housing, and the limiting member isolates and limits the first pin, the second pin and the copper busbar module.

[0018] As a further improvement of the present invention, the high-voltage interface module includes a fast charging connector, a slow charging connector and a discharging connector, and a water inlet and a water outlet are further provided on the integrated panel.

[0019] As a further improvement of the present utility model, the housing includes an upper housing and a lower housing. A plurality of bumps are provided on the lower housing, and a plurality of buckles are provided on the upper housing. The buckles cooperate with the bumps. A partition and a detachable side plate are provided on one side of the lower housing, and a reserved chamber is formed between the partition and the side plate.

[0020] For the present utility model according to the above solution, the beneficial effects of the present utility model are as follows:

[0021] The present utility model uses a wireless transmission module to replace the traditional BMS, which can greatly save the internal space of the battery pack. At the same time, it can avoid the risk of wire breakage or poor interface contact. Through the mutual cooperation of the guiding groove and the fixing rod, it can provide a guiding and limiting function when assembling the housing and the integrated panel, effectively reducing the installation difficulty and improving the assembly efficiency. Description of the Drawings

[0022] Figure 1 is a schematic diagram of the internal structure of the present utility model;

[0023] Figure 2 is a schematic diagram of the structure of the integrated panel of the present utility model;

[0024] Figure 3 is a schematic diagram of the structure of the housing of the present utility model;

[0025] Figure 4 is an assembly diagram of the integrated panel and the housing of the present utility model;

[0026] Figure 5 is a partial enlarged view of part A of the present utility model;

[0027] Figure 6 is a partial enlarged view of part B of the present utility model;

[0028] Figure 7 is a schematic diagram of the structure of the claw disc steel sleeve of the present utility model;

[0029] Figure 8 is a schematic diagram of the structure of the high-voltage interface module of the present utility model.

[0030] In the figure: 1. Integrated panel; 11. Signal transceiver module; 12. Fixed rod; 121. First nut; 13. Anti-fooling hole; 141. Fixed seat; 142. First pin; 143. Second pin; 144. Second bolt hole; 15. Fast charging connector; 16. Slow charging connector; 17. Discharge connector; 18. Water inlet; 19. Water outlet; 2. Wireless transmission module; 3. BDU unit; 31. Housing; 311. Guide groove; 312. Claw disc steel sleeve; 3121. Through hole; 3122. Annular groove; 313. First bolt; 314. Anti-fooling bump; 315. Limiting member; 316. Upper housing; 3161. Buckle; 317. Lower housing; 3171. Protrusion; 3172. Partition; 318. Side plate; 32. BDU electrical component module; 33. Copper busbar module. Detailed implementation manners

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Apparently, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0032] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0033] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations. In addition, the technical features involved in different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0034] See Figure 1, the present utility model provides a battery BDU integration device, which is installed in the electrical system of a vehicle. The BDU integration device at least includes an integration panel 1, a wireless transmission module 2, and a BDU unit 3. On one side of the integration panel 1, at least a signal transceiver module 11 and a high-voltage interface module are installed. The signal transceiver module 11 is signal-connected to the electrical system and the wireless transmission module 2, and is used to receive the parameter signals transmitted by the electrical system and send the parameter signals to the wireless transmission module 2. The high-voltage interface module is electrically connected to the BDU unit 3 to respond to the control signals transmitted by the BDU unit 3. On the other side of the integration panel 1, at least the wireless transmission module 2 and the BDU unit 3 are installed. The wireless transmission module 2 is electrically connected to the BDU unit 3 and is used to transmit the received parameter signals to the BDU unit 3. The BDU unit 3 controls the on-off of the high-voltage interface module according to the parameter signals. The present utility model uses the wireless transmission module 2 to replace the traditional BMS, transmits signals with the electrical system through the signal transceiver module 11, synchronously updates the signal acquisition function of the battery module to wireless acquisition, and realizes the signal acquisition and transmission functions among the battery cell acquisition module, the wireless transmission module 2, and the whole vehicle. It can greatly save the internal space of the battery pack, increase the power, reduce the BOM cost, and at the same time avoid the risks of wire breakage or poor interface contact, effectively improving the service life and reducing the maintenance cost.

[0035] As an embodiment of the present utility model, the BDU unit 3 includes a housing 31, a BDU electrical component module 32 and a copper bar module 33 arranged in the housing 31. The BDU electrical component module 32 is electrically connected to the copper bar module 33. The copper bar module 33 serves as a circuit connection medium to realize the electrical connection between the BDU electrical component module 32, the high-voltage interface module, and the wireless transmission module 2. The wireless transmission module 2 is housed in the housing 31, which improves the integration degree of the wireless transmission module 2 and the BDU unit 3.

[0036] See Figure 2 and Figure 3 , as an embodiment of the present utility model, at least two parallel fixing rods 12 are provided on the integration panel 1. A guiding groove 311 is provided at the bottom of the housing 31. The number of the guiding grooves 311 is the same as that of the fixing rods 12 and they correspond one by one. The housing 31 is seated on the fixing rods 12 and can slide along the guiding grooves 311 on the fixing rods 12 and finally contact the integration panel 1. Through the mutual cooperation of the guiding grooves 311 and the fixing rods 12, it can provide a guiding effect and a limiting effect when assembling the housing 31 and the integration panel 1, effectively reducing the installation difficulty and improving the assembly efficiency. The number of the fixing rods 12 and the guiding grooves 311 can be increased or decreased according to specific usage requirements.

[0037] As an embodiment of the present utility model, a plurality of anti-fooling holes 13 are provided on the integrated panel 1, and a plurality of anti-fooling bumps 314 are provided on the housing 31. The number of the anti-fooling holes 13 is the same as that of the anti-fooling bumps 314 and they correspond to each other one by one. When an operator assembles the integrated panel 1 and the housing 31, first, the direction of the housing 31 is adjusted to ensure that the side with the anti-fooling bumps 314 is close to the side of the integrated panel 1 with the anti-fooling holes 13. Then, the anti-fooling bumps 314 are aligned with the anti-fooling holes 13. Finally, a thrust is applied to insert the anti-fooling bumps 314 into the anti-fooling holes 13, completing the assembly of the integrated panel 1 and the housing 31. Through the cooperation of the anti-fooling bumps 314 and the anti-fooling holes 13, it can not only effectively avoid the misalignment or reverse installation of the housing 31, but also limit the housing 31 in the height direction and the horizontal direction, facilitating the operator to complete the installation of the electrical connection between the high-voltage interface module on the integrated panel 1 and the copper busbar module 33 in the housing 31.

[0038] See Figure 4 -7, as an embodiment of the present utility model, a first nut 121 is provided on the fixing rod 12, a claw disc steel sleeve 312 is provided on the housing 31 above the guiding groove 311, a through hole 3121 is provided on the claw disc steel sleeve 312, and an annular groove 3122 is provided around the through hole 3121. The through hole 3121 and the annular groove 3122 are concentric. The first nut 121 is clamped into the annular groove 3122, and a first bolt 313 is provided between the first nut 121 and the claw disc steel sleeve 312. The first bolt 313 passes through the through hole 3121 and is fixed to the first nut 121. Preferably, the first nut 121 is a rivet nut. The claw disc steel sleeve 312 and the first nut 121 are tightly clamped, and then fastened by the first bolt 313, greatly improving the connection strength between the housing 31 and the fixing rod 12.

[0039] As an embodiment of the present utility model, the bottom surface of the housing 31 is higher than the bottom surface of the fixing rod 12, that is, after the assembly between the housing 31 and the integrated panel 1 is completed, the bottom of the housing 31 is suspended, which is beneficial to the heat dissipation of the BDU unit 3 and improves the heat dissipation capacity of the BDU unit 3.

[0040] As an embodiment of the present utility model, the housing 31 includes an upper housing 316 and a lower housing 317. The lower housing 317 is provided with a plurality of bumps 3171, and the upper housing 316 is provided with a plurality of buckles 3161. The buckles 3161 cooperate with the bumps 3171 to facilitate the assembly and disassembly between the upper housing 316 and the lower housing 317, and facilitate the maintenance of the DPU unit. One side of the lower housing 317 is provided with a partition 3172 and a detachable side plate 318. A reserved chamber is formed between the partition 3172 and the side plate 318 to provide reserved working space for the BDU unit 3. When the available space of the high-voltage interface module on the integrated panel 1 is full and a new high-voltage interface module still needs to be added, the side plate 318 can be opened, and the signal line of the newly added high-voltage interface module can enter the housing 31 through the gap of the partition 3172 and be electrically connected to the BDU electrical component module 32 to realize the expansion of the high-voltage interface module, improving the overall scope of application and use compatibility.

[0041] See Figure 1 and Figure 8 , as an embodiment of the present utility model, the high-voltage interface module includes a fixed seat 141. The fixed seat 141 is provided with a first pin 142 and a second pin 143. The fixed seat 141 is fixed to the integrated panel 1. Both the first pin 142 and the second pin 143 pass through the integrated panel 1 and are inserted into the housing 31. The first pin 142 and the second pin 143 are horizontally offset in a direction perpendicular to the insertion direction, which is convenient for the first pin 142 and the second pin 143 to be electrically connected to the copper row module 33, avoiding the situation that the first pin 142 and the second pin 143 are arranged vertically one above the other, which makes it difficult for the pin located below to be electrically connected to the copper row module 33, and can also reduce the risk of interference and connection between the first pin 142 and the second pin 143, improving the use safety of the high-voltage interface module, the copper row module 33, and the BDU electrical component module 32, and avoiding unnecessary damage; preferably, at least one second bolt hole 144 is provided on both the first pin 142 and the second pin 143. The first pin 142, the second pin 143 and the copper row module 33 are respectively fixed by a second bolt and a second nut to improve the connection strength between the high-voltage interface module and the copper row module 33.

[0042] As an embodiment of the present utility model, a limiting member 315 is provided in the housing 31. The limiting member 315 isolates and positions the first pin 142, the second pin 143 and the copper row module 33, which can avoid electrical connection between adjacent pins, resulting in a short circuit between circuits and damage to the BDU electrical component module 32, effectively improving the safety and stability of the BDU unit 3.

[0043] As an embodiment of the present utility model, the high-voltage interface module includes a fast-charging connector 15, a slow-charging connector 16, and a discharging connector 17. An inlet 18 and an outlet 19 are further provided on the integrated panel 1. Of course, other connectors can also be provided on the integrated panel 1 according to specific usage requirements.

[0044] The overall assembly process: First, confirm the direction of the housing 31, with the side having the anti-fooling bump 314 close to the integrated panel 1. Then place the housing 31 on the fixing rod 12, that is, the fixing rod 12 falls into the guiding groove 311. Then push the housing 31 until the anti-fooling bump 314 enters the anti-fooling hole 13. Then pass the first bolt 313 through the through hole 3121 and fix it with the first nut 121 to complete the fixation of the housing 31 and the fixing rod 12. Finally, fix the high-voltage interface module and the copper row module 33 with the second nut and the second bolt, that is, complete the assembly of the integrated panel 1 and the BDU unit 3.

[0045] In summary, the present utility model provides a battery BDU integration device, which uses the wireless transmission module 2 to replace the traditional BMS, transmits signals with the electrical system through the signal transceiver module 11, and synchronously updates the signal acquisition function of the battery module to wireless acquisition, realizing the signal acquisition and transmission functions among the battery cell acquisition module, the wireless transmission module 2, and the whole vehicle. It can greatly save the internal space of the battery pack, increase the power, and reduce the BOM cost. At the same time, it can avoid the risk of wire breakage or poor interface contact, effectively improve the service life and reduce the maintenance cost; through the mutual cooperation of the guiding groove 311 and the fixing rod 12, it can provide a guiding and limiting effect when assembling the housing 31 and the integrated panel 1, effectively reducing the installation difficulty and improving the assembly efficiency; through the cooperation of the anti-fooling bump 314 and the anti-fooling hole 13, it can not only effectively prevent the housing 31 from being installed misaligned or in the wrong direction, but also limit the housing 31 in the height and horizontal directions, facilitating the operator to complete the installation of the electrical connection between the high-voltage interface module on the integrated panel 1 and the copper row module 33 in the housing 31; the bottom of the housing 31 is suspended, which is beneficial to the heat dissipation of the BDU unit 3 and improves the heat dissipation capacity of the BDU unit 3; a partition 3172 and a detachable side plate 318 are provided on one side of the lower housing 317, which can realize the expansion of the high-voltage interface module and improve the overall application range and compatibility; the first pin 142 and the second pin 143 are horizontally misaligned along the direction perpendicular to the insertion direction, which is convenient for the first pin 142 and the second pin 143 to be electrically connected to the copper row module 33, and can also reduce the risk of interference and connection between the first pin 142 and the second pin 143, improving the use safety of the high-voltage interface module, the copper row module 33, and the BDU electrical component module 32, and avoiding unnecessary damage; the limiting member can prevent the adjacent pins from being electrically connected, thereby causing a short circuit between the circuits and damaging the BDU electrical component module 32, effectively improving the safety and stability of the BDU unit 3.

[0046] It should be emphasized that the above are only the preferred embodiments of the present utility model, and do not impose any form of limitation on the present utility model. Any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. A battery BDU integrated device installed in the electrical system of a vehicle, characterized in that: The BDU integrated device comprises at least an integrated panel (1), a wireless transmission module (2), and a BDU unit (3). At least a signal transceiver module (11) and a high-voltage interface module are installed on one side of the integrated panel (1); the signal transceiver module (11) is signal-connected to the electrical system and the wireless transmission module (2) to receive parameter signals transmitted by the electrical system and to send the parameter signals to the wireless transmission module (2); the high-voltage interface module is electrically connected to the BDU unit (3) to respond to control signals transmitted by the BDU unit (3); At least the wireless transmission module (2) and the BDU unit (3) are installed on the other side of the integrated panel (1); the wireless transmission module (2) is electrically connected to the BDU unit (3) to transmit the received parameter signal to the BDU unit (3); The BDU unit (3) controls the on and off of the high-voltage interface module according to the parameter signal.

2. The battery BDU integrated device according to claim 1, characterized in that: The BDU unit (3) comprises a shell (31), a BDU electrical device module (32) and a copper bus module (33) arranged in the shell (31), the BDU electrical device module (32) being electrically connected to the copper bus module (33), and the wireless transmission module (2) being accommodated in the shell (31).

3. The battery BDU integrated device according to claim 2, characterized in that: The integrated panel (1) is provided with at least two parallel fixed rods (12), the bottom of the shell (31) is provided with guide grooves (311), and the number of the guide grooves (311) is the same as that of the fixed rods (12) and they correspond one to one.

4. The battery BDU integrated device according to claim 3, characterized in that: The fixing rod (12) is provided with a first nut (121), the housing (31) above the guide groove (311) is provided with a claw disk steel sleeve (312), the claw disk steel sleeve (312) is provided with a through hole (3121), an annular groove (3122) is provided around the through hole (3121), the through hole (3121) is concentric with the annular groove (3122), the first nut (121) is inserted into the annular groove (3122), a first bolt (313) is provided between the first nut (121) and the claw disk steel sleeve (312), the first bolt (313) passes through the through hole (3121) and is fixed to the first nut (121).

5. The battery BDU integrated device according to claim 3, characterized in that: The bottom surface of the housing (31) is higher than the bottom surface of the fixing rod (12).

6. The battery BDU integrated device according to claim 2, characterized in that: The integrated panel (1) is provided with a plurality of fool-proof holes (13), and the shell (31) is provided with a plurality of fool-proof convex points (314), and the number of the fool-proof holes (13) and the fool-proof convex points (314) are the same and correspond one to one.

7. The battery BDU integrated device according to claim 2, characterized in that: The high-voltage interface module comprises a fixing seat (141), a first pin (142) and a second pin (143) are arranged in the fixing seat (141), the fixing seat (141) is fixed to the integrated panel (1), the first pin (142) and the second pin (143) both pass through the integrated panel (1) and are inserted into the shell (31), and the first pin (142) and the second pin (143) are horizontally staggered along a direction perpendicular to the insertion direction.

8. The battery BDU integrated device according to claim 7, characterized in that: A limiting member (315) is provided in the housing (31), and the limiting member (315) isolates and limits the first pin (142), the second pin (143) and the copper busbar module (33).

9. The battery BDU integrated device according to claim 1, characterized in that: The high-voltage interface module comprises a fast-charging connector (15), a slow-charging connector (16) and a discharging connector (17), and the integrated panel (1) is also provided with a water inlet (18) and a water outlet (19).

10. The battery BDU integrated device according to claim 2, characterized in that: The shell (31) comprises an upper shell (316) and a lower shell (317); the lower shell (317) is provided with a plurality of protrusions (3171); the upper shell (316) is provided with a plurality of buckles (3161); the buckles (3161) cooperate with the protrusions (3171); a partition (3172) and a detachable side plate (318) are provided on one side of the lower shell (317); a reserved chamber is formed between the partition (3172) and the side plate (318).

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