Lithium battery protection board with built-in heat dissipation mechanism
Technical Field
The utility model relates to the technical field of lithium battery protection plates, in particular to a lithium battery protection plate with a built-in heat dissipation mechanism.
Background
The lithium battery protection board is used for protecting the charge and discharge of the series lithium battery pack, can ensure that the voltage difference between the single batteries is smaller than a set value (generally +/-20 mV) when the battery pack is fully charged, realizes the uniform charge of the single batteries of the battery pack, effectively improves the charging effect in a series charging mode, simultaneously detects the overvoltage, undervoltage, overcurrent, short circuit and overtemperature states of the single batteries in the battery pack, protects and prolongs the service life of the battery, and prevents the battery from being damaged due to overdischarge when each single battery is discharged for use by undervoltage protection.
The existing lithium battery protection board protects the lithium battery, and meanwhile, the heat dissipation effect is not good enough, so that electronic elements inside the protection board can be damaged after long-time use.
Therefore, it is necessary to provide a lithium battery protection plate with a built-in heat dissipation mechanism to solve the above technical problems.
Disclosure of utility model
The utility model provides a lithium battery protection plate with a built-in heat dissipation mechanism, which solves the problem that electronic elements inside the protection plate can be damaged after long-time use due to the fact that the heat dissipation effect of the existing lithium battery protection plate is not good enough.
In order to solve the technical problems, the lithium battery protection plate with the built-in heat dissipation mechanism comprises a bottom plate and an upper cover plate, wherein a side plate is arranged on the bottom plate, a battery installation cavity is arranged in the side plate, an airflow circulation area is arranged on the bottom plate and comprises a flow groove, partition plates which are symmetrically distributed are arranged on two sides of the flow groove, a plurality of arch-shaped pipelines which are equidistantly distributed are arranged in the middle of the flow groove, a bearing plate is fixedly connected to the partition plates, an airflow circulation channel is formed in a space between the arch-shaped pipelines and the bearing plate, a vent is formed in the side plate, a first dustproof net is fixedly connected to the vent, and a heat dissipation fan is arranged on the upper cover plate.
Preferably, the upper cover plate is provided with a first side lug plate, the first side lug plate is provided with a fastening bolt, the fastening bolt penetrates through the first side lug plate and the bottom plate, and the upper cover plate is connected with the bottom plate through the fastening bolt.
Preferably, the bottom plate is fixedly connected with radiating fins, the radiating fins are arranged on two sides of the bottom plate, the radiating fins penetrate through the side plates, a first clamping interface is arranged on the lower surface of the upper cover plate, and the first clamping interface corresponds to the radiating fins in position.
Preferably, the side plate is provided with a buffer assembly, the buffer assembly comprises a first spring and a first buffer block, the first spring is fixedly connected with the inner wall of the side plate, the other end of the first spring is fixedly connected with a contact plate, the first buffer block is fixedly connected with the inner wall of the side plate, and a second buffer block is arranged on one surface of the contact plate, facing the first buffer block.
Preferably, the upper cover plate is provided with a fixed block, a second clamping port is formed in the fixed block, a fan shielding cover is arranged in the second clamping port and comprises a first plug connector and a second plug connector, the second clamping port is respectively connected with the first plug connector and the second plug connector in a clamping mode, a frame is fixedly connected to the first plug connector and is located right above the cooling fan, and a second dust screen is arranged at the top of the frame.
Preferably, the two sides of the fixed block are provided with ejecting pieces, each ejecting piece comprises a sliding block, the sliding blocks are in sliding connection with the fixed block, one side, close to the fixed block, of each sliding block is fixedly connected with a second spring, and the other end of each second spring is fixedly connected with the fixed block.
Compared with the related art, the lithium battery protection plate with the built-in heat dissipation mechanism has the following beneficial effects:
The utility model provides a lithium battery protection plate with a built-in heat dissipation mechanism, wherein air flow enters from a vent, then passes through an air flow circulation area to cool a battery mounting cavity in the device, and finally is discharged from a heat dissipation fan above, so that the heat dissipation rate is accelerated, and the cooling effect is improved.
Drawings
Fig. 1 is a schematic structural diagram of a preferred embodiment of a lithium battery protection board with a built-in heat dissipation mechanism according to the present utility model;
FIG. 2 is a schematic view of the structure of the present utility model with the fan shroud removed;
FIG. 3 is a schematic view of the inner part of the side plate according to the present utility model;
FIG. 4 is a schematic view of the structure of the gas circulation zone of the present utility model;
fig. 5 is a schematic view showing the structure of the fan shield, the fixing block and the ejector according to the present utility model.
In the figure, the reference numerals are 1, a bottom plate, 2, a side plate, 3, a battery mounting cavity, 4, an upper cover plate, 5, a first side lug plate, 6, a fastening bolt, 7, a second side lug plate, 8, a radiating fin, 9, a buffer assembly, 91, a first spring, 92, a contact plate, 93, a first buffer block, 94, a second buffer block, 10, an airflow circulation area, 101, a flow groove, 102, a partition plate, 103, an arched pipeline, 104, a circulation channel, 105, a bearing plate, 11, a ventilation opening, 12, a first dust screen, 13, a first clamping interface, 14, a radiating fan, 15, a fixed block, 16, a second clamping interface, 17, a fan shielding cover, 171, a first plug-in connector, 172, a second plug-in connector, 173, a frame, 174, a second dust screen, 18, an ejector, 181, a sliding block, 182 and a second spring.
Detailed Description
The utility model will be further described with reference to the drawings and embodiments.
Referring to fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5 in combination, fig. 1 is a schematic structural diagram of a preferred embodiment of a lithium battery protection board with a built-in heat dissipation mechanism according to the present utility model;
FIG. 2 is a schematic view of the structure of the present utility model with the fan shroud removed;
FIG. 3 is a schematic view of the inner part of the side plate according to the present utility model;
FIG. 4 is a schematic view of the structure of the gas circulation zone of the present utility model;
fig. 5 is a schematic view showing the structure of the fan shield, the fixing block and the ejector according to the present utility model.
The lithium battery protection plate with the built-in heat dissipation mechanism comprises a bottom plate 1 and an upper cover plate 4, wherein a side plate 2 is arranged on the bottom plate 1, a battery installation cavity 3 is arranged in the side plate 2, an airflow circulation area 10 is arranged on the bottom plate 1, the airflow circulation area 10 comprises a flow groove 101, partition plates 102 which are symmetrically distributed are arranged on two sides of the flow groove 101, a plurality of arch-shaped pipelines 103 which are equidistantly distributed are arranged in the middle of the flow groove 101, a bearing plate 105 is fixedly connected onto the partition plates 102, an airflow circulation channel 104 is formed by a space between the arch-shaped pipelines 103 and the bearing plate 105, a ventilation opening 11 is formed in the side plate 2, a first dust screen 12 is fixedly connected to the ventilation opening 11, and a heat dissipation fan 14 is arranged on the upper cover plate 4.
The division board 102 is L shape, one end and the upper surface parallel and level of bottom plate 1, the other end is high shorter, loading board 105 and the shorter one side fixed connection of division board 102, the lower surface of loading board 105 and the top butt of arch pipeline 103, the lower air current of ambient temperature gets into the inside battery installation cavity 3 of curb plate 2 from vent 11, get into flow groove 101 from division board 102 top again, through the air current circulation channel 104 that space constitutes between arch pipeline 103 and the loading board 105, finally flow out from the division board 102 of flow groove 101 other end, the hot air in the battery installation cavity 3 is discharged by the radiator fan 14 of top.
Be provided with first side ear board 5 on the upper cover plate 4, be provided with fastening bolt 6 on the first side ear board 5, fastening bolt 6 runs through first side ear board 5 and bottom plate 1, upper cover plate 4 passes through fastening bolt 6 and bottom plate 1 connects.
The upper cover plate 4 and the bottom plate 1 are fixedly connected by a first side ear plate 5 and a fastening bolt 6.
The heat dissipation fin 8 is fixedly connected to the bottom plate 1, the heat dissipation fins 8 are arranged on two sides of the bottom plate 1, the heat dissipation fins 8 penetrate through the side plates 2, a first clamping interface 13 is arranged on the lower surface of the upper cover plate 4, and the first clamping interface 13 corresponds to the position of the heat dissipation fins 8.
The radiating fins 8 assist the inside of the battery mounting cavity 3 to radiate heat, and the first clamping interfaces 13 are located on two sides of the radiating fins 8 and used for positioning the mounting of the upper cover plate 4.
The side plate 2 is provided with a buffer assembly 9, the buffer assembly 9 comprises a first spring 91 and a first buffer block 93, the first spring 91 is fixedly connected with the inner wall of the side plate 2, the other end of the first spring 91 is fixedly connected with a contact plate 92, the first buffer block 93 is fixedly connected with the inner wall of the side plate 2, and a second buffer block 94 is arranged on one surface of the contact plate 92 facing the first buffer block 93.
When the battery is pressed to the contact plate 92, the first spring 91 is compressed until the first buffer block 93 and the second buffer block 94 are in contact, and the first buffer block 93 and the second buffer block 94 are made of elastic materials, so that a buffer effect is achieved when the battery is pressed and collided.
The upper cover plate 4 is provided with a fixed block 15, the fixed block 15 is provided with a second clamping port 16, a fan shielding cover 17 is arranged in the second clamping port 16, the fan shielding cover 17 comprises a first plug-in connector 171 and a second plug-in connector 172, the second clamping port 16 is respectively connected with the first plug-in connector 171 and the second plug-in connector 172 in a clamping manner, a frame 173 is fixedly connected to the first plug-in connector 171, the frame 173 is located right above the cooling fan 14, and a second dust screen 174 is arranged at the top of the frame 173.
The first plug connector 171 and the second plug connector 172 are inserted into the second card interface 16, so that the second plug connector is convenient to disassemble and clean, and the heat dissipation effect is prevented from being influenced due to dust accumulation on the second dust screen 174 after long-time use.
The two sides of the fixed block 15 are provided with ejector 18, the ejector 18 comprises a slider 181, the slider 181 is in sliding connection with the fixed block 15, a second spring 182 is fixedly connected to one side of the slider 181, which is close to the fixed block 15, and the other end of the second spring 182 is fixedly connected with the fixed block 15.
When the fan shielding cover 17 needs to be detached, the tail end of the slider 181 is abutted against the second plug connector 172, at this time, the slider 181 is pressed inwards, the slider 181 presses the second plug connector 172 to deform towards the center direction of the fixed block 15, the fan shielding cover 17 is pulled out, and then the second spring 182 drives the slider 181 to reset.
The working principle of the lithium battery protection board with the built-in heat dissipation mechanism provided by the utility model is as follows:
The division board 102 is L shape, one end and the upper surface parallel and level of bottom plate 1, the other end is high shorter, loading board 105 and the shorter one side fixed connection of division board 102, the lower surface of loading board 105 and the top butt of arch pipeline 103, the lower air current of ambient temperature gets into the inside battery installation cavity 3 of curb plate 2 from vent 11, get into flow groove 101 from division board 102 top again, through the air current circulation channel 104 that space constitutes between arch pipeline 103 and the loading board 105, finally flow out from the division board 102 of flow groove 101 other end, the hot air in the battery installation cavity 3 is discharged by the radiator fan 14 of top.
Compared with the related art, the lithium battery protection plate with the built-in heat dissipation mechanism has the following beneficial effects:
The air flow enters from the ventilation opening 11 and then passes through the air flow circulation zone 10 to cool the battery installation cavity 3 in the device, and finally is discharged from the radiating fan 14 above, so that the radiating rate is accelerated, and the cooling effect is improved.
The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present utility model.