Battery management device with overheating protection function

Abstract

The utility model discloses a battery management device with an overheating protection function, which relates to the technical field of battery management and comprises a bottom plate and a radiating component. A protective shell is fixed to the upper side of the bottom plate, a PLC is installed on the front side of the protective shell, three corresponding fixing holes are formed in the lower side of the bottom plate, a second fixing barrel is fixed in the fixing holes, a temperature sensor is installed in the second fixing barrel, and a moving assembly is installed at the upper end in the protective shell; the heat dissipation assembly comprises a first copper heat conduction pipe, second copper heat conduction pipes and aluminum heat dissipation fins, an opening is formed in the upper side of the bottom plate, the first copper heat conduction pipe is fixed in the opening, the second copper heat conduction pipes which are evenly distributed are fixed to the upper end of the first copper heat conduction pipe, and all the second copper heat conduction pipes are communicated with the first copper heat conduction pipe; and auxiliary heat dissipation treatment can be performed on the battery when the temperature of the battery is too high.

Description

Technical Field

[0001] The utility model relates to the technical field of battery management, in particular to a battery management device with an overheat protection function. Background Art

[0002] The battery management device is generally a battery protection board. As the name implies, the lithium battery protection board is mainly an integrated circuit board that protects rechargeable lithium batteries. The reason why lithium batteries need protection is determined by their own characteristics. Since the material of the lithium battery itself determines that it cannot be overcharged, over-discharged, over-current, short-circuited, or charged and discharged at ultra-high temperatures, lithium battery components will always be accompanied by a protection board with a sampling resistor and a current fuse. The protection board usually includes a control IC, MOS switch, precision resistor, and auxiliary devices NTC, ID memory, PCB, etc. The control IC controls the MOS switch to turn on when everything is normal, so that the battery cell communicates with the external circuit. When the battery cell voltage or loop current exceeds the specified value, it immediately controls the MOS switch to turn off to protect the safety of the battery cell.

[0003] The battery management device is generally directly bonded to the side of the battery for use, which is not convenient for auxiliary heat dissipation when the surface temperature of the battery pack is too high. If the battery pack is at a high temperature for a long time, it is easy to affect the use of the battery pack. The existing method mostly uses a cooling fan to assist in heat dissipation of the battery. This method requires coating the cooling fan with lubricating oil after long-term use. However, it is inconvenient to disassemble the cooling fan in the existing method. For this reason, we propose a battery management device with overheating protection function. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the existing defects and provide a battery management device with an overheating protection function, which can assist in heat dissipation when the battery temperature is too high, and at the same time can very conveniently disassemble the cooling fan, which is convenient for users to apply lubricating oil after disassembly, and can effectively solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a battery management device with overheat protection function, comprising a base plate and a heat dissipation component;

[0006] Bottom plate: A protective shell is fixed on the upper side, a PLC controller is installed on the front side of the protective shell, three corresponding fixing holes are opened on the lower side of the bottom plate, a fixing barrel 2 is fixed inside the fixing holes, a temperature sensor is installed inside the fixing barrel 2, and a moving component is installed on the upper end of the protective shell;

[0007] Heat dissipation component: comprising a first copper heat pipe, a second copper heat pipe and aluminum heat dissipation fins, an opening is provided on the upper side of the bottom plate, a first copper heat pipe is fixed inside the opening, evenly distributed second copper heat pipes are fixed to the upper end of the first copper heat pipe, all the second copper heat pipes are connected to the first copper heat pipe, evenly distributed aluminum heat dissipation fins are fixed on the surface of all the second copper heat pipes, and heat is dissipated by setting the heat dissipation component;

[0008] Wherein: the input end of the PLC controller is electrically connected to the output end of the external power supply, and the PLC controller is bidirectionally electrically connected to the temperature sensor.

[0009] Furthermore, the moving component includes a moving bar, a threaded rod, a motor, a limit rod and a fixed barrel. The moving bar is arranged inside the protective shell, the middle part of the moving bar is provided with an opening, a fixed barrel is fixed inside the opening, a threaded hole is arranged on the left side of the moving bar, the internal thread of the threaded hole is connected with a threaded rod, the threaded rod is rotatably connected to the inside of the protective shell, a motor is installed on the front side of the protective shell, the output shaft of the motor is fixed to the front end of the threaded rod, a limit hole is arranged on the right side of the moving bar, the internal sliding connection of the limit rod is provided in the limit hole, the limit rod is fixed inside the protective shell, the input end of the motor is electrically connected to the output end of the PLC controller, and the cooling fan assembly is driven to move by setting the moving component.

[0010] Furthermore, it also includes a heat dissipation fan assembly, which includes a mounting plate, a heat dissipation fan, an L-shaped groove, a fixing ring, a clamp, a spring, a pull rope, a swivel and a toggle ring. The fixing barrel is provided with a mounting plate inside, and the heat dissipation fan is installed on the upper end of the mounting plate. Two corresponding L-shaped grooves are provided on the left and right sides of the fixing barrel, a fixing ring is fixed inside the L-shaped groove, a spring is fixed on the end surface of the fixing ring, and a clamp is fixed on the other end of the spring. Two corresponding grooves are provided on the circumferential surface of the mounting plate, and the clamp is clamped in the groove. A toggle ring is fixed at the upper ends of the two pull ropes, and a swivel is fixed at the lower end of the toggle ring. An annular groove is provided at the upper end of the mounting plate, and the swivel is rotatably connected to the inside of the annular groove. The input end of the heat dissipation fan is electrically connected to the output end of the PLC controller, and the hot air discharged from the aluminum heat dissipation fins is extracted by setting a heat dissipation assembly.

[0011] Furthermore, two corresponding first strip openings are opened on the left and right sides of the protective shell, a first dustproof net is fixed inside the first strip opening, and a second strip opening is opened on the upper side of the protective shell, a second dustproof net is clamped inside the second strip opening. By setting the first dustproof net and the second dustproof net, dust can be effectively prevented from entering between the aluminum cooling fins.

[0012] Furthermore, the left and right ends of the lower side of the movable bar are rotatably connected to two corresponding rotating shafts, and evenly distributed bristles are fixed on the circumferential surface of the rotating shafts. The bristles on the left and right sides are respectively fitted with the sides of the two first dustproof nets, and the two first dustproof nets are cleaned by setting the bristles.

[0013] Furthermore, two corresponding adhesive strips are fixed to the front and rear ends of the lower side of the bottom plate, and release paper is adhered to the lower side of the adhesive strip. The provision of the release paper can effectively prevent the adhesive strip from being contaminated.

[0014] Furthermore, four corresponding grooves are provided on the lower side of the bottom plate, magnets are fixed inside the grooves, and the bottom plate is connected to the battery by providing the magnets.

[0015] Compared with the prior art, the beneficial effects of the utility model are: the battery management device with overheat protection function has the following advantages:

[0016] 1. By setting up a heat dissipation component, the heat generated by the battery during normal operation of the battery will be conducted to the inside of all the second copper heat conduction pipes through the first copper heat conduction pipe, and then discharged through the uniform internal aluminum heat dissipation fins, so that the temperature of the battery can be prevented from being too high during normal operation;

[0017] 2. By setting a temperature sensor, the temperature of the battery surface is detected in real time. When the temperature is too high, the PLC controller will automatically start the motor and the cooling fan. The motor causes the threaded rod to rotate, and the rotation of the threaded rod drives the moving bar to move. The movement of the moving bar drives the cooling fan to move. In this case, auxiliary heat dissipation can be performed to prevent the battery temperature from being too high.

[0018] 3. By setting the first dustproof net, the first dustproof net can be removed after long-term use. After removal, the toggle ring is turned to pull the two pull ropes to move the two clamps away from the installation plate, and then the installation plate can be easily removed, and then the cooling fan can be easily lubricated and maintained. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the front structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the heat dissipation component of the utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the mobile component of the utility model;

[0022] Figure 4 It is a schematic diagram of the structure of the magnet of the utility model.

[0023] Figure 5This is a schematic diagram of the structure of the heat dissipation fan assembly of the utility model.

[0024] In the figure: 1 bottom plate, 2 protective shell, 3 PLC controller, 4 heat dissipation assembly, 41 first copper heat pipe, 42 second copper heat pipe, 43 aluminum heat dissipation fin, 5 moving assembly, 51 moving bar, 52 threaded rod, 53 motor, 54 limit rod, 55 fixed barrel one, 6 cooling fan assembly, 61 mounting plate, 62 cooling fan, 63 L-shaped groove, 64 fixing ring, 65 clamp, 66 spring, 67 pull rope, 68 swivel, 69 toggle ring, 7 second dustproof net, 8 rotating shaft, 9 bristles, 10 adhesive strip, 11 release paper, 12 fixed barrel two, 13 temperature sensor, 14 magnet, 15 first dustproof net. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-5 , this embodiment provides a technical solution: a battery management device with overheat protection function, including a base plate 1 and a heat dissipation component 4;

[0027] Bottom plate 1: A protective shell 2 is fixed on the upper side, a PLC controller 3 is installed on the front side of the protective shell 2, three corresponding fixing holes are opened on the lower side of the bottom plate 1, a fixing barrel 2 12 is fixed inside the fixing hole, a temperature sensor 13 is installed inside the fixing barrel 2 12, a moving assembly 5 is installed on the upper end of the protective shell 2, the moving assembly 5 includes a moving bar 51, a threaded rod 52, a motor 53, a limit rod 54 and a fixing barrel 1 55, a moving bar 51 is arranged inside the protective shell 2, an opening is opened in the middle of the moving bar 51, and the opening A fixed barrel 55 is fixed inside the movable bar 51, a threaded hole is provided on the left side of the movable bar 51, a threaded rod 52 is connected to the threaded hole, and the threaded rod 52 is rotatably connected to the inside of the protective shell 2, a motor 53 is installed on the front side of the protective shell 2, and the output shaft of the motor 53 is fixed to the front end of the threaded rod 52, a limiting hole is provided on the right side of the movable bar 51, and a limiting rod 54 is slidably connected to the inside of the limiting hole, and the limiting rod 54 is fixed to the inside of the protective shell 2, and the input end of the motor 53 is electrically connected to the output end of the PLC controller 3. The cooling fan assembly 6 includes a mounting plate 61, a cooling fan 62, an L-shaped groove 63, a fixing ring 64, a clamp 65, a spring 66, a pull rope 67, a rotating ring 68 and a toggle ring 69. The fixing barrel 55 is provided with a mounting plate 61 inside, and a cooling fan 62 is installed on the upper end of the mounting plate 61. Two corresponding L-shaped grooves 63 are provided on the left and right sides of the fixing barrel 55. A fixing ring 64 is fixed inside the L-shaped groove 63. A spring 66 is fixed on the end surface of the fixing ring 64. The other end of the spring 66 is fixed There is a clamping head 65, and two corresponding clamping grooves are provided on the circumferential surface of the mounting plate 61. The clamping head 65 is clamped inside the clamping groove. The upper ends of the two pull ropes 67 are fixed with a toggle ring 69, and the lower end of the toggle ring 69 is fixed with a rotating ring 68. An annular groove is provided on the upper end of the mounting plate 61, and the rotating ring is rotatably connected inside the annular groove. The input end of the heat dissipation fan 62 is electrically connected to the output end of the PLC controller 3. The heat dissipation component 6 is provided to extract the hot air discharged from the aluminum heat dissipation fins 43, and the moving component 5 is provided to drive the heat dissipation fan component 6 to move;

[0028] Heat dissipation component 4: comprising a first copper heat-conducting pipe 41, a second copper heat-conducting pipe 42 and aluminum heat-dissipating fins 43. An opening is provided on the upper side of the bottom plate 1, and the first copper heat-conducting pipe 41 is fixed inside the opening. The upper end of the first copper heat-conducting pipe 41 is fixed with uniformly distributed second copper heat-conducting pipes 42. All the second copper heat-conducting pipes 42 are connected to the first copper heat-conducting pipe 41. The surfaces of all the second copper heat-conducting pipes 42 are fixed with uniformly distributed aluminum heat-dissipating fins 43. Heat dissipation is performed by setting the heat dissipation component 4;

[0029] Wherein: the input end of the PLC controller 3 is electrically connected to the output end of the external power supply, and the PLC controller 3 is bidirectionally electrically connected to the temperature sensor 13 .

[0030] Among them: two corresponding first strip openings are opened on the left and right sides of the protective shell 2, and a first dustproof net 15 is fixed inside the first strip opening. A second strip opening is opened on the upper side of the protective shell 2, and a second dustproof net 7 is clamped inside the second strip opening. By setting the first dustproof net 15 and the second dustproof net 15, dust can be effectively prevented from entering between the aluminum heat dissipation fins 43.

[0031] Among them: the left and right ends of the lower side of the movable bar 51 are rotatably connected to two corresponding rotating shafts 8, and the circumferential surface of the rotating shafts 8 is fixed with evenly distributed bristles 9. The bristles 9 on the left and right sides are respectively fitted with the side surfaces of the two first dustproof nets 15, and the two first dustproof nets 15 are cleaned by setting the bristles 9.

[0032] Wherein: two corresponding adhesive strips 10 are fixed to the front and rear ends of the lower side of the bottom plate 1, and a release paper 11 is adhered to the lower side of the adhesive strip 10. The release paper 11 can effectively prevent the adhesive strip 10 from being contaminated.

[0033] Among them: four corresponding grooves are opened on the lower side of the bottom plate 1, and magnets 14 are fixed inside the grooves. The bottom plate 1 is connected to the battery by setting the magnets 14.

[0034] The working principle of a battery management device with overheat protection function provided by the utility model is as follows: first, remove the release paper 11 attached to the lower side of the adhesive strip 10, and after removal, connect the two adhesive strips 10 and the four magnets 14 to the surface of the battery. After connection, the lower surface of the first copper heat pipe 41 will be attached to the surface of the battery, and the installation can be completed in this case. During the normal operation of the battery, the heat generated by the battery will be conducted to the inside of all the second copper heat pipes 42 through the first copper heat pipe 41, and then discharged through the uniform internal aluminum heat dissipation fins 43. In this case, the temperature of the battery can be prevented from being too high during normal operation. At the same time, the temperature sensor 13 is continuously connected to the battery during operation. The temperature of the battery surface is detected in real time. When the temperature is too high, the PLC controller 3 will automatically start the motor 53 and the cooling fan 55. The motor 53 causes the threaded rod 52 to rotate. The rotation of the threaded rod 52 drives the moving bar 51 to move. The movement of the moving bar 51 drives the cooling fan 55 to move. In this case, auxiliary heat dissipation can be performed to prevent the battery temperature from being too high. After long-term use, the first dustproof net 15 can be removed. After removal, the toggle ring 69 is rotated to pull the two pull ropes 67 to move the two clamps 65 away from the mounting plate 61. Then the mounting plate 61 can be easily removed, and then the cooling fan 62 can be easily lubricated and maintained.

[0035] It is worth noting that the PLC controller 3 disclosed in the above embodiment is specifically a Siemens S7-200 model, the motor 53 can be a 1LE0003 three-phase asynchronous motor, the cooling fan 62 can be a D2E146 cooling fan, and the temperature sensor 13 can be a LSCI-TZ03 laser focusing infrared temperature sensor. The PLC controller 3 controls the motor 53 and the cooling fan 62 using methods commonly used in the prior art.

[0036] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A battery management device with overheat protection function, characterized in that: It comprises a base plate (1) and a heat dissipation component (4); Bottom plate (1): a protective shell (2) is fixed on the upper side, a PLC controller (3) is installed on the front side of the protective shell (2), three corresponding fixing holes are opened on the lower side of the bottom plate (1), a fixing barrel 2 (12) is fixed inside the fixing holes, a temperature sensor (13) is installed inside the fixing barrel 2 (12), and a moving component (5) is installed at the upper end of the protective shell (2); The heat dissipation component (4) comprises a first copper heat-conducting pipe (41), a second copper heat-conducting pipe (42) and aluminum heat-dissipating fins (43); an opening is provided on the upper side of the bottom plate (1); the first copper heat-conducting pipe (41) is fixed inside the opening; evenly distributed second copper heat-conducting pipes (42) are fixed to the upper end of the first copper heat-conducting pipe (41); all the second copper heat-conducting pipes (42) are in communication with the first copper heat-conducting pipe (41); and evenly distributed aluminum heat-dissipating fins (43) are fixed to the surface of all the second copper heat-conducting pipes (42); Wherein: the input end of the PLC controller (3) is electrically connected to the output end of an external power supply, and the PLC controller (3) is bidirectionally electrically connected to a temperature sensor (13).

2. A battery management device with overheat protection function according to claim 1, characterized in that: The moving assembly (5) comprises a moving bar (51), a threaded rod (52), a motor (53), a limiting rod (54) and a fixed barrel (55). The moving bar (51) is arranged inside the protective shell (2). An opening is arranged in the middle of the moving bar (51). A fixed barrel (55) is fixed inside the opening. A threaded hole is arranged on the left side of the moving bar (51). The threaded rod (52) is threadedly connected inside the threaded hole. The threaded rod (52) is rotatably connected inside the protective shell (2). A motor (53) is installed on the front side of the protective shell (2). The output shaft of the motor (53) is fixed at the front end of the threaded rod (52). A limiting hole is arranged on the right side of the moving bar (51). The limiting rod (54) is slidably connected inside the limiting hole. The limiting rod (54) is fixed inside the protective shell (2). The input end of the motor (53) is electrically connected to the output end of the PLC controller (3).

3. A battery management device with overheat protection function according to claim 2, characterized in that: The heat dissipation fan assembly (6) further comprises a heat dissipation fan assembly (6), wherein the heat dissipation fan assembly (6) comprises a mounting plate (61), a heat dissipation fan (62), an L-shaped groove (63), a fixing ring (64), a clamp (65), a spring (66), a pull rope (67), a rotating ring (68) and a toggle ring (69), wherein the fixing barrel (55) is provided with a mounting plate (61) inside, a heat dissipation fan (62) is installed at the upper end of the mounting plate (61), two corresponding L-shaped grooves (63) are provided on the left and right sides inside the fixing barrel (55), and a fixing ring (64) is fixed inside the L-shaped groove (63), A spring (66) is fixed on the end surface of the fixing ring (64), and a clamp (65) is fixed on the other end of the spring (66). Two corresponding clamping grooves are provided on the circumferential surface of the mounting plate (61), and the clamp (65) is clamped inside the clamping grooves. A toggle ring (69) is fixed on the upper ends of the two pull ropes (67), and a rotating ring (68) is fixed on the lower end of the toggle ring (69). An annular groove is provided on the upper end of the mounting plate (61), and the rotating ring is rotatably connected inside the annular groove. The input end of the heat dissipation fan (62) is electrically connected to the output end of the PLC controller (3).

4. A battery management device with overheat protection function according to claim 1, characterized in that: The protective shell (2) has two corresponding first strip-shaped openings on its left and right sides, a first dustproof net (15) being fixed inside the first strip-shaped opening, and a second strip-shaped opening being provided on the upper side of the protective shell (2), a second dustproof net (7) being clamped inside the second strip-shaped opening.

5. A battery management device with overheat protection function according to claim 2, characterized in that: The left and right ends of the lower side of the movable bar (51) are rotatably connected to two corresponding rotating shafts (8), and evenly distributed bristles (9) are fixed on the circumferential surface of the rotating shaft (8), and the bristles (9) on the left and right sides are respectively fitted with the side surfaces of the two first dustproof nets (15).

6. A battery management device with overheat protection function according to claim 1, characterized in that: Two corresponding adhesive strips (10) are fixed to the front and rear ends of the lower side of the bottom plate (1), and a release paper (11) is adhered to the lower side of the adhesive strip (10).

7. A battery management device with overheat protection function according to claim 1, characterized in that: Four corresponding grooves are provided on the lower side of the bottom plate (1), and magnets (14) are fixed inside the grooves.

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