Modular lithium battery pack-BMS bin module

Abstract

The invention discloses a modular lithium battery pack-BMS bin module, and relates to the technical field of lithium batteries, the modular lithium battery pack-BMS bin module comprises a battery pack, one side of the battery pack is provided with an embedding groove, a sealing ring is fixedly installed in the embedding groove, the interior of the embedding groove is slidably connected with a BMS bin box, one side of the battery pack is fixedly provided with a fixing block, and the fixing block is slidably connected with the BMS bin box. A stop lever is slidably connected into the fixing block, one end of the stop lever is inclined, a limiting block is fixedly mounted at the end, located in the fixing block, of the stop lever, the limiting block is slidably connected into the fixing block, and the fixing rod is extruded through the inclined surface at one end of the stop lever, so that the BMS bin box slides into the embedding groove; and the blocking rod abuts against the fixing rod, so that the BMS bin box is fixed, the BMS bin box is fixed conveniently, the BMS bin box and the battery pack are prevented from falling off, the connection stability is improved, and the phenomenon that a lithium battery is poor in power supply is prevented.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium batteries, and particularly to a modular lithium battery pack - BMS bin module. Background Art

[0002] A lithium battery is a battery with a lithium metal or lithium alloy as the anode material and using a non - aqueous electrolyte solution. A lithium battery includes a cover structure, and the cover structure includes a positive electrode post, a conductive sheet, a top cover sheet, and a plastic cover plate. The conductive sheet is connected to the positive electrode post, the positive electrode post is insulated and assembled with the top cover sheet, and the plastic cover plate is connected to the top cover sheet. Different from a lithium - ion battery, the former is a primary battery and the latter is a rechargeable battery. Due to the very active chemical properties of lithium metal, the processing, storage, and use of lithium metal have very high requirements for the environment, so lithium batteries have not been applied for a long time. With the development of microelectronics technology at the end of the 20th century, the number of miniaturized devices has increased day by day, posing high requirements for power sources, and lithium batteries have thus entered the large - scale practical stage.

[0003] After retrieval, the existing Chinese patent publication number is: CN 220873667 U, which provides a modular lithium battery pack - BMS bin module. Through the embedding grooves and sealing sleeves provided on the battery pack, the BMS bin can be docked and assembled, and at the same time, it is convenient to ensure the sealing effect at the contact position between the two. And through the two groups of limiting components provided at the connection between the outer walls of the upper and lower sides of the BMS bin and the outer wall of the battery pack, the portable disassembly and positioning effect of the BMS bin on the outer wall of the battery pack can be effectively realized, so as to facilitate the internal maintenance work of the BMS bin when the two are completely separated.

[0004] Although the above - mentioned patent can achieve the portable disassembly and positioning effect of the BMS bin on the outer wall of the battery pack, the above - mentioned modular lithium battery pack - BMS bin module still has the following problems: during use, the BMS bin cannot be well fixed, and thus it is easy for the BMS bin to be separated from the battery pack. Summary of the Invention

[0005] The purpose of the present invention is to solve at least one of the technical problems existing in the prior art, and provide a modular lithium battery pack - BMS bin module, which can solve the problems in the background art.

[0006] To achieve the above object, the present invention provides the following technical solutions: A modular lithium battery pack - BMS bin module, including a battery pack. An embedding groove is formed on one side of the battery pack. A sealing ring is fixedly installed inside the embedding groove. A BMS bin box is slidably connected inside the embedding groove. A fixing block is fixedly installed on one side of the battery pack. A blocking rod is slidably connected inside the fixing block. One end of the blocking rod is inclined. A limiting block is fixedly installed at the end of the blocking rod located inside the fixing block. The limiting block is slidably connected inside the fixing block. A first elastic spring is fixedly installed inside the fixing block. One end of the first elastic spring close to the limiting block is fixedly connected to the limiting block. A fixing rod is fixedly installed on the BMS bin box. A blocking piece is fixedly installed at the end of the fixing rod away from the BMS bin box.

[0007] Preferably, a management system terminal is arranged inside the BMS bin box. Connecting lines are arranged on the management system terminal. Connectors are fixedly installed at both ends of the connecting lines. A polygonal rod is fixedly installed inside the BMS bin box. A connecting sliding frame is slidably connected on the surface of the polygonal rod.

[0008] Preferably, a moving plate is fixedly installed at one end of the connecting sliding frame. A groove is formed on the moving plate. The connecting line is located inside the groove.

[0009] Preferably, a second elastic spring is movably sleeved on the polygonal rod. The upper end of the second elastic spring is fixedly connected to the inside of the BMS bin box. The lower end of the second elastic spring is fixedly connected to the top of the connecting sliding frame.

[0010] Preferably, an installation block is fixedly installed inside the BMS bin box. A convex block is slidably connected inside the installation block. One end of the convex block is inclined. A reset spring is fixedly installed inside the installation block. One end of the reset spring close to the convex block is fixedly connected to the convex block.

[0011] Preferably, a rotating rod is rotatably connected inside the BMS bin box. A disc is fixedly installed at the end of the rotating rod located inside the BMS bin box. Two winding rods are fixedly installed on the disc. The connecting line is located between the two winding rods.

[0012] Preferably, a protective box is fixedly installed on one side of the BMS bin box. The rotating rod rotates through the protective box and extends to the outside of the protective box. A ratchet surface sealing ring is fixedly sleeved at the end of the rotating rod located inside the protective box. A driving rod is rotatably connected inside.

[0013] Preferably, a pawl is fixedly installed at the end of the driving rod located inside the protective box. The pawl meshes with the ratchet. A torsion spring is movably sleeved on the driving rod. One end of the torsion spring close to the pawl is fixedly connected to the pawl. The other end of the torsion spring away from the pawl is fixedly connected to the inside of the protective box.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] (1) The modular lithium battery pack - BMS bin module enables the shift lever to reset by the elastic force of the first elastic spring. The inclined surface at one end of the shift lever squeezes the fixed rod, causing the BMS bin box to slide into the embedding groove, and the shift lever abuts against the fixed rod, thereby achieving the fixation of the BMS bin box, facilitating the fixation of the BMS bin box, preventing the BMS bin box from detaching from the battery pack, improving the connection stability, and preventing the lithium battery from having poor power supply.

[0016] (2) When the rotating rod rotates, it drives the disc and the two winding rods to rotate, thereby winding the connecting wire around the two winding rods, facilitating the binding of the connecting wire, preventing the excess connecting wire from accumulating inside the BMS bin box, and preventing the phenomenon of winding.

[0017] (3) The modular lithium battery pack - BMS bin module enables the convex block to slide into the mounting block, squeezing the return spring. When the moving plate no longer squeezes the convex block, the convex block will reset by the elastic force of the return spring, blocking the moving plate, facilitating the insertion of multiple connectors into the specified interfaces, facilitating the user to install the connectors, and improving the installation convenience.

[0018] (4) The modular lithium battery pack - BMS bin module enables the moving plate and the connecting sliding frame to reset by the elastic force of the second elastic spring. The connecting sliding frame slides on the polygonal rod, and the moving plate blocks the connector, causing the connecting wire to enter the groove, thereby achieving the extrusion fixation of the connector, preventing the connector from separating from the corresponding interface, improving the connection stability, ensuring the safety of the lithium battery pack during use, and preventing the phenomenon of poor contact. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the drawings and embodiments:

[0020] Figure 1 is a schematic structural diagram of a modular lithium battery pack - BMS bin module of the present invention;

[0021] Figure 2 is of the present invention Figure 1 an enlarged schematic diagram at A in

[0022] Figure 3 is an internal schematic diagram of the fixing block of the present invention;

[0023] Figure 4 is an internal schematic diagram of the BMS bin box of the present invention;

[0024] Figure 5 For the present invention Figure 4 Schematic enlarged view at position B in the present invention;

[0025] Figure 6 Internal schematic view of the mounting block of the present invention;

[0026] Figure 7 Internal schematic view of the protective box of the present invention;

[0027] Figure 8 For the present invention Figure 7 Schematic enlarged view at position C in the present invention.

[0028] Reference numerals: 1, battery pack; 2, BMS bin box; 3, fixing block; 4, embedding groove; 5, sealing ring; 6, blocking rod; 7, fixing rod; 8, blocking piece; 9, first elastic spring; 10, limiting block; 11, management system terminal; 12, connecting wire; 13, rotating rod; 14, disc; 15, winding rod; 16, polygonal rod; 17, second elastic spring; 18, connecting sliding frame; 19, moving plate; 20, groove; 21, joint; 22, mounting block; 23, convex block; 24, reset spring; 25, protective box; 26, ratchet; 27, ratchet pawl; 28, torsion spring; 29, driving rod. Detailed implementation manners

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] To further understand the content of the present invention, the present invention will be described in detail in conjunction with the accompanying drawings.

[0031] Please refer to Figures 1-8 , the present invention provides a technical solution: a modular lithium battery pack - BMS bin module, including a battery pack 1, an embedding groove 4 is opened on one side of the battery pack 1, a sealing ring 5 is fixedly installed inside the embedding groove 4, a BMS bin box 2 is slidably connected inside the embedding groove 4, a fixing block 3 is fixedly installed on one side of the battery pack 1, a blocking rod 6 is slidably connected inside the fixing block 3, one end of the blocking rod 6 is inclined, a limiting block 10 is fixedly installed on the end of the blocking rod 6 located inside the fixing block 3, the limiting block 10 is slidably connected inside the fixing block 3, a first elastic spring 9 is fixedly installed inside the fixing block 3, and one end of the first elastic spring 9 close to the limiting block 10 is fixedly connected to the limiting block 10, a fixing rod 7 is fixedly installed on the BMS bin box 2, and a blocking piece 8 is fixedly installed at the end of the fixing rod 7 away from the BMS bin box 2.

[0032] Install the BMS bin 2 into the inside of the embedding groove 4, and then seal the connection between the BMS bin 2 and the battery pack 1 through the sealing ring 5, thereby preventing dust from entering the inside of the BMS bin 2 and the battery pack 1, and improving the protection of the BMS bin 2 and the battery pack 1.

[0033] Push the BMS bin 2 into the inside of the embedding groove 4, and then the stop lever 6 will reset by the elastic force of the first elastic spring 9. Use the inclined surface at one end of the stop lever 6 to squeeze the fixed lever 7, so that the BMS bin 2 slides into the inside of the embedding groove 4, and the stop lever 6 abuts against the fixed lever 7, thereby realizing the fixation of the BMS bin 2, facilitating the fixation of the BMS bin 2, preventing the BMS bin 2 from falling off the battery pack 1, improving the connection stability, and preventing the phenomenon of poor power supply of the lithium battery.

[0034] A management system terminal 11 is arranged inside the BMS bin 2. A connecting wire 12 is arranged on the management system terminal 11. Connectors 21 are fixedly installed at both ends of the connecting wire 12. A polygonal rod 16 is fixedly installed inside the BMS bin 2. A connecting sliding frame 18 is slidably connected to the surface of the polygonal rod 16. One end of the connecting sliding frame 18 is fixedly installed with a moving plate 19. A groove 20 is formed in the moving plate 19. The connecting wire 12 is located inside the groove 20. A second elastic spring 17 is movably sleeved on the polygonal rod 16. The upper end of the second elastic spring 17 is fixedly connected to the inside of the BMS bin 2. The lower end of the second elastic spring 17 is fixedly connected to the top of the connecting sliding frame 18. An installation block 22 is fixedly installed inside the BMS bin 2. A convex block 23 is slidably connected to the inside of the installation block 22. One end of the convex block 23 is inclined. A reset spring 24 is fixedly installed inside the installation block 22. The end of the reset spring 24 close to the convex block 23 is fixedly connected to the convex block 23.

[0035] Insert the connector 21 into the corresponding interface, so that the moving plate 19 and the connecting sliding frame 18 reset by the elastic force of the second elastic spring 17, so that the connecting sliding frame 18 slides on the polygonal rod 16, so that the moving plate 19 blocks the connector 21, and the connecting wire 12 enters the inside of the groove 20, thereby realizing the extrusion fixation of the connector 21, preventing the connector 21 from separating from the corresponding interface, improving the connection stability, ensuring the safety of the lithium battery pack during use, and preventing the phenomenon of poor contact.

[0036] The movable plate 19 is pushed upward, so that the connecting sliding frame 18 slides on the polygonal rod 16 and squeezes the second elastic spring 17. When the movable plate 19 contacts the inclined surface of the protrusion 23, the movable plate 19 squeezes the inclined surface of the protrusion 23, so that the protrusion 23 slides toward the inside of the mounting block 22, so that the protrusion 23 squeezes the reset spring 24. When the movable plate 19 no longer squeezes the protrusion 23, the protrusion 23 is reset by the elastic force of the reset spring 24, so that the protrusion 23 blocks the movable plate 19, so as to facilitate the insertion of multiple connectors 21 into the designated interface, facilitate the user to install the connector 21, and improve the convenience of installation.

[0037] The BMS bin box 2 is rotatably connected to a rotating rod 13 inside. A disc 14 is fixedly mounted on one end of the rotating rod 13 located inside the BMS bin box 2. Two winding rods 15 are fixedly mounted on the disc 14. The connecting line 12 is located between the two winding rods 15. A protective box 25 is fixedly mounted on one side of the BMS bin box 2. The rotating rod 13 rotates through the protective box 25 and extends to the outside of the protective box 25. The rotating rod 13 is located inside the protective box 25 and is fixedly sleeved with a ratchet 26 on one end. The internal surface sealing ring 5 is rotatably connected to a driving rod 29. A pawl 27 is fixedly mounted on one end of the driving rod 29 located inside the protective box 25. The pawl 27 is meshed with the ratchet 26. A torsion spring 28 is movably sleeved on the driving rod 29. One end of the torsion spring 28 close to the pawl 27 is fixedly connected to the pawl 27, and one end of the torsion spring 28 away from the pawl 27 is fixedly connected to the inside of the protective box 25.

[0038] The rotating rod 13 is rotated, so that the rotating rod 13 drives the ratchet 26 to rotate, so that the ratchet 26 squeezes the pawl 27, and the pawl 27 rotates around the driving rod 29, so that the torsion spring 28 is deformed, and then the rotating rod 13 is restricted by the setting of the pawl 27 and the ratchet 26, so that the rotating rod 13 rotates unidirectionally, which makes it easier to control the rotating rod 13, and the driving rod 29 is rotated so that the driving rod 29 drives the pawl 27 to disengage from the surface of the ratchet 26, so that the rotating rod 13 can rotate in both directions.

[0039] When the rotating rod 13 rotates, the disc 14 and the two winding rods 15 are driven to rotate, and then the connecting wire 12 is wound around the two winding rods 15, so as to facilitate the binding of the connecting wire 12, thereby preventing excess connecting wire 12 from accumulating inside the BMS compartment box 2, thereby preventing entanglement.

[0040] Working principle:

[0041] Push the BMS bin box 2 into the inside of the embedding slot 4. Further, the retaining rod 6 will be reset by the elastic force of the first elastic spring 9. Use the inclined surface at one end of the retaining rod 6 to squeeze the fixed rod 7. Further, the BMS bin box 2 will slide into the inside of the embedding slot 4, and the retaining rod 6 will abut against the fixed rod 7, thus realizing the fixation of the BMS bin box 2. Insert the connector 21 into the corresponding interface, so that the moving plate 19 and the connecting sliding frame 18 are reset by the elastic force of the second elastic spring 17. Further, the connecting sliding frame 18 slides on the polygonal rod 16, and then the moving plate 19 blocks the connector 21, and the connecting wire 12 enters into the inside of the groove 20, thus realizing the extrusion fixation of the connector 21.

[0042] Push the moving plate 19 upward. Further, the connecting sliding frame 18 slides on the polygonal rod 16 and squeezes the second elastic spring 17. Further, when the moving plate 19 contacts the inclined surface of the convex block 23, the moving plate 19 will squeeze the inclined surface of the convex block 23. Further, the convex block 23 slides into the inside of the mounting block 22, and then the convex block 23 squeezes the return spring 24. Further, when the moving plate 19 no longer squeezes the convex block 23, the convex block 23 will be reset by the elastic force of the return spring 24, and then the convex block 23 blocks the moving plate 19, thus facilitating the insertion of multiple connectors 21 into the specified interfaces and facilitating the user to install the connectors 21.

[0043] Rotate the rotating rod 13. Further, the rotating rod 13 drives the ratchet wheel 26 to rotate. The ratchet wheel 26 squeezes the pawl 27. Further, the pawl 27 rotates around the driving rod 29, and the torsion spring 28 deforms. Further, through the setting of the pawl 27 and the ratchet wheel 26, the rotating rod 13 is restricted to rotate unidirectionally, thus facilitating the control of the rotating rod 13. Rotate the driving rod 29, so that the driving rod 29 drives the pawl 27 to disengage from the surface of the ratchet wheel 26, and then the rotating rod 13 can rotate bidirectionally.

[0044] When the rotating rod 13 rotates, it drives the disc 14 and the two winding rods 15 to rotate. Further, the connecting wire 12 is wound around the two winding rods 15, thus facilitating the restraint of the connecting wire 12 and preventing the excess connecting wire 12 from accumulating inside the BMS bin box 2.

[0045] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A modular lithium battery pack - BMS bin module, comprising a battery pack, characterized in that: An embedding groove is formed on one side of the battery pack. A sealing ring is fixedly installed inside the embedding groove. A BMS bin is slidably connected inside the embedding groove. A fixing block is fixedly installed on one side of the battery pack. A blocking rod is slidably connected inside the fixing block. One end of the blocking rod is inclined. A limiting block is fixedly installed at the end of the blocking rod located inside the fixing block. The limiting block is slidably connected inside the fixing block. A first elastic spring is fixedly installed inside the fixing block. One end of the first elastic spring close to the limiting block is fixedly connected to the limiting block. A fixing rod is fixedly installed on the BMS bin. A blocking piece is fixedly installed at the end of the fixing rod away from the BMS bin.

2. The modular lithium battery pack - BMS bin module according to claim 1, wherein: A management system terminal is arranged inside the BMS bin. Connecting lines are arranged on the management system terminal. Joints are fixedly installed at both ends of the connecting lines. A polygonal rod is fixedly installed inside the BMS bin. A connecting sliding frame is slidably connected to the surface of the polygonal rod.

3. The modular lithium battery pack - BMS bin module according to claim 2, wherein: One end of the connecting sliding frame is fixedly installed with a moving plate. Grooves are formed on the moving plate. The connecting line is located inside the grooves.

4. A modular lithium battery pack - BMS bin module according to claim 3, characterized in that: A second elastic spring is movably sleeved on the polygonal rod. The upper end of the second elastic spring is fixedly connected to the inside of the BMS bin. The lower end of the second elastic spring is fixedly connected to the top of the connecting sliding frame.

5. A modular lithium battery pack - BMS bin module according to claim 4, characterized in that: An installation block is fixedly installed inside the BMS bin. A convex block is slidably connected inside the installation block. One end of the convex block is inclined. A reset spring is fixedly installed inside the installation block. One end of the reset spring close to the convex block is fixedly connected to the convex block.

6. The modular lithium battery pack - BMS bin module according to claim 5, wherein: A rotating rod is rotatably connected inside the BMS bin. A disc is fixedly installed at the end of the rotating rod located inside the BMS bin. Two winding rods are fixedly installed on the disc. The connecting line is located between the two winding rods.

7. A modular lithium battery pack - BMS bin module according to claim 6, characterized in that: A protective box is fixedly installed on one side of the BMS bin. The rotating rod rotates through the protective box and extends to the outside of the protective box. A ratchet surface sealing ring is fixedly sleeved at the end of the rotating rod located inside the protective box. A driving rod is rotatably connected inside.

8. A modular lithium battery pack - BMS bin module according to claim 7, characterized in that: A ratchet pawl is fixedly installed at the end of the driving rod located inside the protective box. The ratchet pawl meshes with the ratchet wheel. A torsion spring is movably sleeved on the driving rod. One end of the torsion spring close to the ratchet pawl is fixedly connected to the ratchet pawl. One end of the torsion spring away from the ratchet pawl is fixedly connected to the inside of the protective box.

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