Lithium battery protection plate with built-in heat dissipation mechanism

Abstract

The utility model provides a lithium battery protection plate with a built-in heat dissipation mechanism, which comprises a bottom plate and an upper cover plate, a side plate is arranged on the bottom plate, a battery mounting cavity is arranged in the side plate, an airflow circulation area is arranged on the bottom plate, the airflow circulation area comprises a flowing groove, symmetrically distributed partition plates are arranged on two sides of the flowing groove, and the upper cover plate is arranged on the upper cover plate. A plurality of arc-shaped pipelines distributed at equal intervals are arranged in the middle of the flowing groove, the space between the arc-shaped pipelines and the bearing plate forms an airflow circulation channel, ventilation openings are formed in the side plates, first dustproof nets are fixedly connected to the ventilation openings, and a cooling fan is arranged on the upper cover plate. According to the lithium battery protection plate with the built-in heat dissipation mechanism, provided by the utility model, air flow enters from the ventilation opening, passes through the air flow circulation area to cool the battery mounting cavity in the device, and is finally discharged from the heat dissipation fan above, so that the heat dissipation rate is accelerated, and the cooling effect is improved.

Description

Technical Field

[0001] 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 Art

[0002] The lithium battery protection board is a charge and discharge protection board for the series-connected lithium battery pack. When fully charged, it can ensure that the voltage difference between each single cell is less than the set value (usually ±20mV), so as to achieve equal charging of each single cell in the battery pack and effectively improve the charging effect under the series charging mode. At the same time, it can detect the overvoltage, undervoltage, overcurrent, short circuit and overtemperature status of each single cell in the battery pack to protect and extend the battery life. The undervoltage protection can prevent each single cell from being damaged due to overdischarge when it is discharged.

[0003] The existing lithium battery protection board, while protecting the lithium battery, has an inadequate heat dissipation effect, which may cause damage to the electronic components inside the protection board after long-term use.

[0004] Therefore, it is necessary to provide a lithium battery protection board with a built-in heat dissipation mechanism to solve the above technical problems. Utility Model Content

[0005] The utility model provides a lithium battery protection board with a built-in heat dissipation mechanism, which solves the problem that the heat dissipation effect of the existing lithium battery protection board is not good enough, resulting in the possibility of damage to the electronic components inside the protection board after long-term use.

[0006] In order to solve the above technical problems, the utility model provides a lithium battery protection plate with a built-in heat dissipation mechanism, comprising: a bottom plate and an upper cover plate, the bottom plate is provided with a side plate, the interior of the side plate is provided with a battery installation cavity, the bottom plate is provided with an airflow circulation area, the airflow circulation area includes a flow groove, symmetrically distributed partition plates are provided on both sides of the flow groove, a plurality of equally distributed arched pipes are provided in the middle part of the flow groove, a supporting plate is fixedly connected to the partition plate, the space between the arched pipe and the supporting plate constitutes an airflow circulation channel, a vent is opened on the side plate, a first dustproof net is fixedly connected to the vent, and a cooling fan is provided on the upper cover plate.

[0007] Preferably, a first side ear plate is provided on the upper cover plate, a fastening bolt is provided on the first side ear plate, the fastening bolt passes through the first side ear plate and the bottom plate, and the upper cover plate is connected to the bottom plate via the fastening bolt.

[0008] Preferably, the base plate is fixedly connected with heat dissipation fins, the heat dissipation fins are arranged on both sides of the base plate, the heat dissipation fins penetrate the side plates, and the lower surface of the upper cover plate is provided with a first card interface, and the first card interface corresponds to the position of the heat dissipation fins.

[0009] Preferably, a buffer assembly is provided on the side panel, and the buffer assembly includes a first spring and a first buffer block, the first spring is fixedly connected to the inner wall of the side panel, the other end of the first spring is fixedly connected to a contact plate, the first buffer block is fixedly connected to the inner wall of the side panel, and a second buffer block is provided on the side of the contact plate facing the first buffer block.

[0010] Preferably, a fixing block is provided on the upper cover plate, a second card interface is opened on the fixing block, a fan shield cover is provided in the second card interface, the fan shield cover includes a first connector and a second connector, the second card interface is respectively connected to the first connector and the second connector, a frame is fixedly connected to the first connector, the frame is located directly above the cooling fan, and a second dust net is provided on the top of the frame.

[0011] Preferably, pop-up members are provided on both sides of the fixed block, and the pop-up members include a slider, which is slidably connected to the fixed block, and a second spring is fixedly connected to one side of the slider close to the fixed block, and the other end of the second spring is fixedly connected to the fixed block.

[0012] Compared with the related art, the lithium battery protection board with built-in heat dissipation mechanism provided by the utility model has the following beneficial effects:

[0013] The utility model provides a lithium battery protection plate with a built-in heat dissipation mechanism. Airflow enters from the vents, passes through the airflow circulation area to cool the battery installation cavity inside the device, and is finally discharged from the heat dissipation fan above, thereby accelerating the heat dissipation rate and improving the cooling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A structural schematic diagram of a preferred embodiment of a lithium battery protection board with a built-in heat dissipation mechanism provided by the utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the utility model after the fan shielding cover is removed;

[0016] Figure 3 It is a schematic diagram of the structure inside the side panel of the utility model;

[0017] Figure 4 It is a structural schematic diagram of the airflow circulation area in the utility model;

[0018] Figure 5 It is a structural schematic diagram of the fan shield, the fixing block and the ejection member in the utility model.

[0019] Numbers in the figure: 1. bottom plate, 2. side plate, 3. battery installation cavity, 4. upper cover plate, 5. first side ear plate, 6. fastening bolt, 7. second side ear plate, 8. heat dissipation fin, 9. buffer assembly, 91. first spring, 92. contact plate, 93. first buffer block, 94. second buffer block, 10. air flow circulation area, 101. flow groove, 102. partition plate, 103. arched pipe, 104. air flow circulation channel, 105. bearing plate, 11. vent, 12. first dustproof net, 13. first card interface, 14. cooling fan, 15. fixing block, 16. second card interface, 17. fan shield, 171. first connector, 172. second connector, 173. frame, 174. second dustproof net, 18. pop-up part, 181. slider, 182. second spring. DETAILED DESCRIPTION

[0020] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0021] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 ,in, Figure 1 A structural schematic diagram of a preferred embodiment of a lithium battery protection board with a built-in heat dissipation mechanism provided by the utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the utility model after the fan shielding cover is removed;

[0023] Figure 3 It is a schematic diagram of the structure inside the side panel of the utility model;

[0024] Figure 4 It is a structural schematic diagram of the airflow circulation area in the utility model;

[0025] Figure 5 It is a structural schematic diagram of the fan shield, the fixing block and the ejection member in the utility model.

[0026] A lithium battery protection plate with a 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 inside the side plate 2, an airflow circulation area 10 is arranged on the bottom plate 1, and the airflow circulation area 10 comprises a flow groove 101, symmetrically distributed partition plates 102 are arranged on both sides of the flow groove 101, a plurality of equally distributed arched pipes 103 are arranged in the middle part of the flow groove 101, a bearing plate 105 is fixedly connected to the partition plate 102, and the space between the arched pipe 103 and the bearing plate 105 constitutes an airflow circulation channel 104, a vent 11 is opened on the side plate 2, a first dustproof net 12 is fixedly connected to the vent 11, and a heat dissipation fan 14 is arranged on the upper cover plate 4.

[0027] The partition plate 102 is L-shaped, with one end flush with the upper surface of the base plate 1 and the other end being shorter. The supporting plate 105 is fixedly connected to the shorter side of the partition plate 102, and the lower surface of the supporting plate 105 abuts against the top of the arched pipe 103. The airflow with a lower external temperature enters the battery installation cavity 3 inside the side plate 2 from the vent 11, and then enters the flow groove 101 from above the partition plate 102, passes through the airflow circulation channel 104 formed by the space between the arched pipe 103 and the supporting plate 105, and finally flows out from the partition plate 102 at the other end of the flow groove 101, and the hot air in the battery installation cavity 3 is discharged by the cooling fan 14 above.

[0028] The upper cover plate 4 is provided with a first side ear plate 5 , and the first side ear plate 5 is provided with a fastening bolt 6 , and the fastening bolt 6 passes through the first side ear plate 5 and the bottom plate 1 , and the upper cover plate 4 is connected to the bottom plate 1 through the fastening bolt 6 .

[0029] The upper cover plate 4 and the bottom plate 1 are fixedly connected by the first side ear plate 5 and the fastening bolts 6 .

[0030] The bottom plate 1 is fixedly connected with heat dissipation fins 8 , which are arranged on both sides of the bottom plate 1 and penetrate the side plate 2 . The lower surface of the upper cover plate 4 is provided with a first card interface 13 , which corresponds to the position of the heat dissipation fins 8 .

[0031] The heat dissipation fins 8 assist the interior of the battery installation cavity 3 in dissipating heat. The first card interface 13 is located on both sides of the heat dissipation fins 8 and is used to position the installation of the upper cover plate 4 .

[0032] A buffer assembly 9 is provided on the side plate 2, and the buffer assembly 9 includes a first spring 91 and a first buffer block 93. The first spring 91 is fixedly connected to the inner wall of the side plate 2, and the other end of the first spring 91 is fixedly connected to a contact plate 92. The first buffer block 93 is fixedly connected to the inner wall of the side plate 2, and a second buffer block 94 is provided on the side of the contact plate 92 facing the first buffer block 93.

[0033] When the battery is squeezed onto the contact plate 92, the first spring 91 is compressed until the first buffer block 93 and the second buffer block 94 come into contact. The first buffer block 93 and the second buffer block 94 are both made of elastic materials, which have a buffering effect when the battery is squeezed and collided.

[0034] The upper cover plate 4 is provided with a fixing block 15, the fixing block 15 is provided with a second card interface 16, a fan shielding cover 17 is provided in the second card interface 16, the fan shielding cover 17 includes a first connector 171 and a second connector 172, the second card interface 16 is respectively connected to the first connector 171 and the second connector 172, a frame 173 is fixedly connected to the first connector 171, the frame 173 is located directly above the cooling fan 14, and a second dustproof net 174 is provided on the top of the frame 173.

[0035] The first connector 171 and the second connector 172 are inserted into the second card interface 16 for easy removal and cleaning after disassembly and assembly, thereby preventing dust from accumulating on the second dustproof net 174 after long-term use, thereby affecting the heat dissipation effect.

[0036] Pop-up members 18 are provided on both sides of the fixed block 15. The pop-up members 18 include a slider 181. The slider 181 is slidably connected to the fixed block 15. A second spring 182 is fixedly connected to one side of the slider 181 close to the fixed block 15. The other end of the second spring 182 is fixedly connected to the fixed block 15.

[0037] When the fan shield 17 needs to be removed, since the end of the slider 181 is in contact with the second connector 172, the slider 181 is pressed inwardly at this time, and the slider 181 will squeeze the second connector 172, causing it to deform toward the center of the fixed block 15, and then the fan shield 17 can be pulled out, and then the second spring 182 drives the slider 181 to reset.

[0038] The working principle of a lithium battery protection board with a built-in heat dissipation mechanism provided by the utility model is as follows:

[0039] The partition plate 102 is L-shaped, with one end flush with the upper surface of the base plate 1 and the other end being shorter. The supporting plate 105 is fixedly connected to the shorter side of the partition plate 102, and the lower surface of the supporting plate 105 abuts against the top of the arched pipe 103. The airflow with a lower external temperature enters the battery installation cavity 3 inside the side plate 2 from the vent 11, and then enters the flow groove 101 from above the partition plate 102, passes through the airflow circulation channel 104 formed by the space between the arched pipe 103 and the supporting plate 105, and finally flows out from the partition plate 102 at the other end of the flow groove 101, and the hot air in the battery installation cavity 3 is discharged by the cooling fan 14 above.

[0040] Compared with the related art, the lithium battery protection board with built-in heat dissipation mechanism provided by the utility model has the following beneficial effects:

[0041] The airflow enters from the vent 11, passes through the airflow circulation area 10 to cool the battery installation cavity 3 inside the device, and is finally discharged from the cooling fan 14 above, which speeds up the heat dissipation rate and improves the cooling effect.

[0042] 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 lithium battery protection board with a built-in heat dissipation mechanism, characterized in that: include: A bottom plate and an upper cover plate, the bottom plate is provided with a side plate, a battery installation cavity is provided inside the side plate, an airflow circulation area is provided on the bottom plate, the airflow circulation area includes a flow groove, symmetrically distributed partition plates are provided on both sides of the flow groove, a plurality of equally distributed arched pipes are provided in the middle part of the flow groove, a supporting plate is fixedly connected to the partition plate, the space between the arched pipe and the supporting plate constitutes an airflow circulation channel, a vent is opened on the side plate, a first dustproof net is fixedly connected to the vent, and a cooling fan is provided on the upper cover plate.

2. A lithium battery protection board with a built-in heat dissipation mechanism according to claim 1, characterized in that: The upper cover plate is provided with a first side ear plate, and the first side ear plate is provided with a fastening bolt, the fastening bolt passes through the first side ear plate and the bottom plate, and the upper cover plate is connected to the bottom plate through the fastening bolt.

3. The lithium battery protection board with built-in heat dissipation mechanism according to claim 1, characterized in that: The bottom plate is fixedly connected with heat dissipation fins, the heat dissipation fins are arranged on both sides of the bottom plate, the heat dissipation fins penetrate the side plates, and the lower surface of the upper cover plate is provided with a first card interface, and the first card interface corresponds to the position of the heat dissipation fins.

4. The lithium battery protection board with built-in heat dissipation mechanism according to claim 1, characterized in that: A buffer assembly is provided on the side plate, and the buffer assembly includes a first spring and a first buffer block. The first spring is fixedly connected to the inner wall of the side plate, the other end of the first spring is fixedly connected to a contact plate, the first buffer block is fixedly connected to the inner wall of the side plate, and a second buffer block is provided on a side of the contact plate facing the first buffer block.

5. The lithium battery protection board with built-in heat dissipation mechanism according to claim 1, characterized in that: A fixing block is provided on the upper cover plate, a second card interface is provided on the fixing block, a fan shield cover is provided in the second card interface, the fan shield cover includes a first connector and a second connector, the second card interface is respectively connected to the first connector and the second connector, a frame is fixedly connected to the first connector, the frame is located directly above the cooling fan, and a second dustproof net is provided on the top of the frame.

6. A lithium battery protection board with a built-in heat dissipation mechanism according to claim 5, characterized in that: Pop-up members are arranged on both sides of the fixed block, and the pop-up members include a slider, which is slidably connected to the fixed block, and a second spring is fixedly connected to one side of the slider close to the fixed block, and the other end of the second spring is fixedly connected to the fixed block.

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