Heat dissipation control device for high-rate discharge lithium battery module

Abstract

A high-rate discharge lithium battery module heat dissipation control device comprises a plurality of battery cells and heat conduction thin plates arranged on the two sides of the battery cells, a plurality of hollow micropores extending from top to bottom are formed in the heat conduction thin plates, upper ventilation grooves are formed in the tops of the battery cells, heat dissipation fans are arranged on the side walls of the upper ventilation grooves, and the heat dissipation fans are arranged on the side walls of the upper ventilation grooves. The cooling fan is controlled by a control module, a lower ventilation groove is formed in the bottom of the battery cell, the upper ventilation groove and the lower ventilation groove are both communicated with the hollow micro-hole, and an air inlet is formed in the right side of the top of the side wall of the lower ventilation groove. According to the heat dissipation control device for the high-rate discharge lithium battery module, the heat-conducting thin plates are arranged on the two sides of the battery cell, the hollow micropores communicated with the upper ventilation slot and the lower ventilation slot are formed in the heat-conducting thin plates, and the heat dissipation fan is arranged on the left side of the upper ventilation slot; therefore, air sequentially passes through the lower ventilation slots, the hollow micropores and the upper ventilation slots to cool and dissipate heat of the battery cell, the heat dissipation efficiency is high, the battery cell adopts a square aluminum shell design, the size is small, and the power is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to a high rate discharge lithium battery module heat dissipation control device. BACKGROUND

[0002] With the change of use demand, the lithium battery system for data center standby power, from the past when power supply is interrupted, the lithium battery system can provide standby power for as long as possible (usually more than 30 minutes), due to the increase of single cabinet IT equipment power density by several times or dozens of times, only a very short standby time (usually within 10 minutes) is required. Especially in the process of building supercomputing power data center today, the demand for short-time high-power standby power is more explicit. This change in demand requires the lithium battery system to change from the original guarantee time to guarantee power under the condition of unchanged unit space occupation, and then the lithium battery system starts to use high-rate cells to provide short-time high-efficiency standby power.

[0003] The high-rate cells usually discharge at 4C or even 6C, at which time the heat generation of the cells becomes very obvious. To ensure that the cells can discharge safely and reliably and release as much electricity as possible, an efficient heat dissipation system is needed, and the traditional heat dissipation system is difficult to meet the needs at present, so a heat dissipation control device is needed to solve this problem. SUMMARY

[0004] The utility model provides a high rate discharge lithium battery module heat dissipation control device.

[0005] The utility model adopts the technical scheme for solving the above technical problems:

[0006] A high rate discharge lithium battery module heat dissipation control device, comprising a plurality of cells and a heat-conducting sheet arranged on both sides of the cells, a plurality of hollow micropores extending from top to bottom are arranged in the heat-conducting sheet, an upper ventilation slot is arranged at the top of the cell, a heat dissipation fan is arranged on the side wall of the upper ventilation slot, the heat dissipation fan is controlled by a control module, a lower ventilation slot is arranged at the bottom of the cell, the upper ventilation slot and the lower ventilation slot are communicated with the hollow micropores, an air inlet is arranged on the right side of the top of the side wall of the lower ventilation slot, an air outlet is arranged on the left side of the side wall of the upper ventilation slot, the heat dissipation fan is arranged at the air outlet of the upper ventilation slot, and air enters the hollow micropores from the air inlet of the lower ventilation slot, passes through the upper ventilation slot in sequence and is extracted by the heat dissipation fan.

[0007] Preferably, the heat-conducting sheet is attached between two cells by heat-conducting glue.

[0008] Preferably, the upper ventilation slot and the lower ventilation slot are both L-shaped.

[0009] Preferably, the upper ventilation groove and the lower ventilation groove are provided with rubber weather strips at the connection with the hollow micropores.

[0010] Preferably, the electric core adopts a square aluminum shell design.

[0011] Preferably, the material of the heat-conducting sheet is aluminum alloy.

[0012] Preferably, the hollow micropores are circular holes, square holes or honeycomb regular hexagonal holes.

[0013] Compared with the prior art, the high-rate discharge lithium battery module heat dissipation control device has the following advantages: the heat-conducting sheet is arranged on both sides of the electric core, the heat-conducting sheet is provided with hollow micropores which are in communication with the upper ventilation groove and the lower ventilation groove, the left side of the upper ventilation groove is provided with a heat dissipation fan, air flows through the lower ventilation groove, the hollow micropores and the upper ventilation groove in sequence to cool the electric core, the heat dissipation efficiency is high, the electric core adopts a square aluminum shell design, the volume is small and the power is high. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 It is a side view of the high-rate discharge lithium battery module heat dissipation control device.

[0015] Fig. 2 It is a top view of the high-rate discharge lithium battery module heat dissipation control device. DETAILED DESCRIPTION

[0016] The high-rate discharge lithium battery module heat dissipation control device will be further described in detail below with reference to the drawings.

[0017] As Figs. 1-2As shown, the high-rate discharge lithium battery module heat dissipation control device comprises a plurality of battery cells 1 and heat-conducting sheets 2 arranged on both sides of the battery cells 1, the heat-conducting sheets 2 are cut according to the size of the side with the largest area of the battery cells 1, and the heat-conducting sheets 2 are attached between two battery cells 1 through heat-conducting adhesive. The heat-conducting sheet 2 is provided with a plurality of hollow micro-holes 21 extending from top to bottom, the top of the battery cell 1 is provided with an upper ventilation groove 3, the side wall of the upper ventilation groove 3 is provided with a plurality of heat dissipation fans 5, the heat dissipation fans 5 are controlled through a control module, the bottom of the battery cell 1 is provided with a lower ventilation groove 4, and the upper ventilation groove 3 and the lower ventilation groove 4 are both L-shaped. The upper ventilation groove 3 and the lower ventilation groove 4 are both communicated with the hollow micro-holes 21, so that the air in the upper ventilation groove 3 and the lower ventilation groove 4 flows along the hollow micro-holes 21 to dissipate heat and cool the battery cell 1. The connection between the upper ventilation groove 3 and the lower ventilation groove 4 and the hollow micro-holes 21 is provided with a rubber pressing strip, and the rubber pressing strip improves the sealing effect to avoid the loss of cold air flow. The top right side of the side wall of the lower ventilation groove 4 is provided with an air inlet, the left side of the side wall of the upper ventilation groove 3 is provided with an air outlet, and the heat dissipation fan 5 is arranged at the air outlet of the upper ventilation groove 3, so that the air enters the hollow micro-holes 21 from the air inlet of the lower ventilation groove 4, successively passes through the upper ventilation groove 3 and is extracted through the heat dissipation fan 5, and the air flows through the hollow micro-holes 21 to dissipate heat and cool the battery cell 1.

[0018] The battery cell 1 adopts a square aluminum shell design, improves the power density, and has a smaller volume than the existing cylindrical battery cell, under the premise that the overall appearance size of the original lithium battery pack system does not change, the space occupied by the battery cell 1 in the battery pack system is reduced, so that the battery pack capacity can be improved by increasing the number of battery cells 1, and the problem of high heat dissipation caused by high-rate discharge can be solved by increasing a more complex heat dissipation device.

[0019] The material of the heat-conducting sheet 2 can be selected from an aluminum alloy, the heat-conducting effect is good, the hollow micro-holes 21 can be circular holes, square holes or honeycomb-shaped regular hexagonal holes, and the ventilation volume is increased as much as possible while the strength of the heat-conducting sheet 2 is ensured.

[0020] The high-rate discharge lithium battery module heat dissipation control device sets the heat-conducting sheet 2 on both sides of the battery cell 1, the heat-conducting sheet 2 is provided with the hollow micro-holes 21 communicated with the upper ventilation groove 3 and the lower ventilation groove 4, the left side of the upper ventilation groove 3 is provided with the heat dissipation fan 5, so that the air successively flows through the lower ventilation groove 4, the hollow micro-holes 21 and the upper ventilation groove 3 to cool and dissipate heat for the battery cell 1, the heat dissipation efficiency is high, the battery cell 1 adopts a square aluminum shell design, has a small volume and high power.

[0021] Finally, it should be noted that: the above examples only illustrate the technical solutions of the present application, rather than limit them; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A high-rate discharge lithium battery module heat dissipation control device, characterized in that, The application relates to a heat dissipation device for a battery pack, which comprises a plurality of electric cores (1) and heat-conducting thin plates (2) arranged on both sides of the electric cores (1), a plurality of hollow micro-holes (21) extending from top to bottom are arranged in the heat-conducting thin plates (2), the top of the electric core (1) is provided with an upper ventilation groove (3), the side wall of the upper ventilation groove (3) is provided with a heat dissipation fan (5), the heat dissipation fan (5) is controlled by a control module, the bottom of the electric core (1) is provided with a lower ventilation groove (4), the upper ventilation groove (3) and the lower ventilation groove (4) are communicated with the hollow micro-holes (21), the top right side of the side wall of the lower ventilation groove (4) is provided with an air inlet, the left side of the side wall of the upper ventilation groove (3) is provided with an air outlet, the heat dissipation fan (5) is arranged at the air outlet of the upper ventilation groove (3), and air enters the hollow micro-holes (21) from the air inlet of the lower ventilation groove (4) and is sequentially taken out through the upper ventilation groove (3) and the heat dissipation fan (5).

2. The high rate discharge lithium battery module heat dissipation control device of claim 1, wherein, The heat-conducting thin plates (2) are adhered between two electric cores (1) by heat-conducting glue.

3. The high rate discharge lithium battery module heat dissipation control device of claim 1, wherein, The upper ventilation groove (3) and the lower ventilation groove (4) are both L-shaped.

4. The high rate discharge lithium battery module heat dissipation control device of claim 1, wherein, Rubber pressing strips are arranged at the connecting positions of the upper ventilation groove (3), the lower ventilation groove (4) and the hollow micro-holes (21).

5. The high rate discharge lithium battery module heat dissipation control device of claim 1, wherein, The electric cores (1) are all designed in square aluminum shells.

6. The high rate discharge lithium battery module heat dissipation control device of claim 1, wherein, The material of the heat-conducting thin plates (2) is aluminum alloy.

7. The high rate discharge lithium battery module heat dissipation control device of claim 1, wherein, The hollow micro-holes (21) are circular holes, square holes or honeycomb-shaped regular hexagonal holes.

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