Smoke exhaust air duct of lithium battery module

Abstract

The utility model discloses a lithium battery module smoke exhaust air duct, and particularly relates to the technical field of lithium batteries, the lithium battery module is formed by arranging a plurality of lithium batteries, the tops of the lithium batteries are provided with battery cell explosion-proof valves, and the lithium battery module smoke exhaust air duct is characterized in that the smoke exhaust air duct is attached to the top of the lithium battery module and covers the plurality of battery cell explosion-proof valves at the top of the lithium batteries; a busbar is attached to the top of the smoke exhaust air duct, the busbar shields the upper portion of the smoke exhaust air duct, and a smoke exhaust air duct outlet is formed in the busbar. According to the utility model, the smoke exhaust duct and the busbar are bonded together, and the through holes of the smoke exhaust duct are in one-to-one correspondence with the explosion-proof valves on the battery cells, so that gas and smoke in the lithium battery enter the smoke exhaust duct together and are discharged together when the explosion-proof valves are opened, a certain sealing property can be ensured, and the gas and the smoke can be discharged in a unified manner; and the driver and the passengers have certain escape time in danger.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of lithium battery, more specifically, the utility model relates to a lithium battery module smoke exhaust air duct. BACKGROUND

[0002] The smoke exhaust air duct is a kind of component for collecting gas leaked from explosion-proof valve in lithium battery module, and currently, new energy vehicles are more and more popular in domestic and international markets, and the market share is shared with fuel vehicles or even exceeds fuel vehicles, but the safety of new energy vehicles is lower than that of fuel vehicles, which is ultimately due to the safety of new energy vehicle batteries, and currently, the module designed on the market is generally without smoke exhaust air duct, if battery thermal runaway occurs, it will not have enough time for the driver and passenger to escape from the vehicle, which is dangerous, and some modules have smoke exhaust air ducts, but the smoke exhaust air duct has a certain weight, and there is no rational design, so that the design is redundant. CONTENT OF THE UTILITY MODEL

[0003] To solve the above technical problems, the utility model provides a lithium battery module smoke exhaust air duct, the lithium battery module is arranged by a plurality of lithium batteries, the lithium battery top is provided with battery explosion-proof valve, the smoke exhaust air duct is attached to the top of lithium battery module, a plurality of battery explosion-proof valves on the top of lithium battery are covered, the busbar is attached to the top of smoke exhaust air duct, the busbar is shielded above the smoke exhaust air duct, and the smoke exhaust air duct outlet is installed on the busbar.

[0004] In a preferred embodiment, a plurality of smoke exhaust air duct through holes are formed in the smoke exhaust air duct, and the plurality of smoke exhaust air duct through holes correspond one-to-one to the battery explosion-proof valves on the top of the plurality of lithium batteries.

[0005] In a preferred embodiment, a smoke exhaust air duct back protrusion is arranged at the edge of the side close to the battery explosion-proof valve of the smoke exhaust air duct through hole, and the smoke exhaust air duct back protrusion corresponds one-to-one to the battery explosion-proof valve.

[0006] In a preferred embodiment, a smoke exhaust air duct front protrusion is arranged at the edge of the side away from the battery explosion-proof valve of the smoke exhaust air duct, a back recess is arranged at the edge of the side close to the smoke exhaust air duct of the busbar, and the back recess and the smoke exhaust air duct front protrusion are bonded by glue.

[0007] In a preferred embodiment, a PC insulating sheet is arranged on the top of the busbar to cover the top of the busbar and the smoke exhaust air duct.

[0008] The utility model has the following technical effects and advantages:

[0009] The utility model discloses a certain temperature resistance, process forming simple, integral lightweight and low cost, and the smoke exhaust duct and the busbar are bonded together, and the smoke exhaust duct through -hole and the explosion -proof valve on the electric core correspond one to one, guarantee the gas in lithium battery and smoke together enter the smoke exhaust duct and discharge together when explosion -proof valve opens, can guarantee certain leakproofness, can also plan and remove the gas and smoke uniformly, guarantee the driver and the passenger have certain escape time when dangerous. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 It is the structure explosion schematic drawing of the utility model;

[0011] Figure 2 It is the smoke exhaust duct placement schematic drawing of the utility model;

[0012] Figure 3 It is the smoke exhaust duct schematic drawing of the utility model;

[0013] Figure 4 It is the back surface schematic drawing of the smoke exhaust duct of the utility model;

[0014] Figure 5 It is the front surface schematic drawing of the smoke exhaust duct of the utility model;

[0015] Figure 6 It is the busbar back surface part schematic drawing of the utility model;

[0016] Figure 7 It is the busbar front surface schematic drawing of the utility model;

[0017] Figure 8 It is the busbar and the smoke exhaust duct back surface schematic drawing of the utility model.

[0018] Explanations of reference numerals: 1 PC insulating sheet, 2 busbar, 2-1 smoke exhaust duct outlet, 2-2 back surface groove, 3 smoke exhaust duct, 3-1 smoke exhaust duct back surface protrusion, 3-2 smoke exhaust duct front surface protrusion, 3-3 smoke exhaust duct through -hole, 4 electric core explosion -proof valve. DETAILED DESCRIPTION

[0019] The utility model makes further detailed explanation in combination with the drawings and specific embodiment. The embodiment of the utility model is given for example and description, and is not exhaustive or limit the utility model to the disclosed form. Many modifications and changes are obvious to those skilled in the art. The embodiment is selected and described to better illustrate the principle and practical application of the utility model, and make those skilled in the art understand the utility model to design various embodiments with various modifications suitable for specific use.

[0020] As Figures 1-8The lithium battery module smoke exhaust air duct is shown, the lithium battery module is arranged by several lithium batteries, the top of the lithium battery is provided with the battery explosion-proof valve 4, the smoke exhaust air duct 3 is attached to the top of the lithium battery module, the several battery explosion-proof valves 4 on the top of the lithium battery are covered, the busbar 2 is attached to the top of the smoke exhaust air duct 3, the busbar 2 shields the upper part of the smoke exhaust air duct 3, and the smoke exhaust air duct outlet 2-1 is installed on the busbar 2, the smoke exhaust air duct outlet 2-1 is integrally injection molded with the busbar 2, and the gas and smoke in the smoke exhaust air duct 3 are discharged.

[0021] Further, the PC insulating sheet 1 is arranged on the top of the busbar 2 and covers the top of the busbar 2 and the smoke exhaust air duct 3, the PC insulating sheet 1 is attached to the uppermost part of the entire lithium battery module, so as to prevent conduction and dust, and reduce the safety risk.

[0022] The busbar 2 is placed below the PC insulating sheet 1 and is welded to the uppermost end of the lithium battery, so as to provide battery performance and optimize battery charging and discharging, and the smoke exhaust air duct 3 is placed below the busbar 2, so as to collect the gas and smoke discharged from the lithium battery.

[0023] The smoke exhaust air duct 3 is provided with the smoke exhaust air duct through holes 3-3, the smoke exhaust air duct through holes 3-3 correspond to the battery explosion-proof valves 4 on the top of the lithium battery, so as to collect the gas and smoke in each lithium battery.

[0024] The smoke exhaust air duct back protrusion 3-1 is arranged at the edge of the side close to the battery explosion-proof valve 4 of the smoke exhaust air duct through hole 3-3, the smoke exhaust air duct back protrusion 3-1 corresponds to the battery explosion-proof valve 4, so as to make the gas and smoke in the lithium battery enter the smoke exhaust air duct 3 and be discharged together when the explosion-proof valve is opened.

[0025] The smoke exhaust air duct front protrusion 3-2 is arranged at the edge of the side away from the battery explosion-proof valve 4 of the smoke exhaust air duct 3, the busbar 2 is provided with the back groove 2-2 at the edge of the side attached to the smoke exhaust air duct 3, the back groove 2-2 and the smoke exhaust air duct front protrusion 3-2 are bonded by glue, so as to connect the busbar 2 and the smoke exhaust air duct 3.

[0026] Based on the above, the smoke exhaust duct 3 is attached to the top of the lithium battery, the channel of the smoke exhaust duct 3 and the back protrusion 3-1 of the smoke exhaust duct align with the explosion-proof valve 4 on the lithium battery, so that when the explosion-proof valve is opened, the gas in the lithium battery and the smoke enter the smoke exhaust duct 3 together and are discharged together, and the top of the smoke exhaust duct 3 is attached to the busbar 2, the busbar 2 is provided with a back groove 2-2 close to the back of the smoke exhaust duct 3, and the front protrusion 3-2 of the smoke exhaust duct is bonded by glue, so that a space for temporarily containing and passing smoke is formed between the two, when the gas and smoke enter the space, a certain buffering effect can be achieved, and then the gas and smoke are discharged from the smoke exhaust duct outlet 2-1 on the busbar 2.

[0027] Further, the smoke exhaust duct 3 is formed by using an ABS injection molding process, has certain temperature resistance, the process forming is simple, the whole is light in weight and low in cost, the smoke exhaust duct 3 is bonded together with the busbar 2, the smoke exhaust duct through hole 3-3 corresponds to the explosion-proof valve on the battery cell one by one, so that when the explosion-proof valve is opened, the gas in the lithium battery and the smoke enter the smoke exhaust duct 3 together and are discharged together, which can ensure a certain sealing property and can also uniformly plan to discharge the gas and smoke, so as to ensure that the driver and the passenger have a certain escape time when danger occurs.

[0028] Obviously, the described embodiments are only part of the embodiments of the utility model, not all. Based on the embodiments in the utility model, all other embodiments obtained by ordinary skilled in the art and related fields without creative labor should belong to the scope of protection of the utility model. The structures, devices and operation methods not specifically described and explained in the utility model are implemented according to the conventional means in the art, unless otherwise specified and limited.

Claims

1. A lithium battery module exhaust air duct, the lithium battery module is arranged by a plurality of lithium batteries, and an electric core explosion-proof valve is installed on the top of the lithium battery, characterized in that, The smoke exhaust duct is attached to the top of the lithium battery module, covers the several explosion-proof valves of the lithium battery top, the busbar is attached to the top of the smoke exhaust duct, the busbar shields the top of the smoke exhaust duct, and the smoke exhaust duct outlet is installed on the busbar.

2. The lithium battery module smoke exhaust air duct of claim 1, wherein: The smoke exhaust duct is provided with several smoke exhaust duct through holes, and the several smoke exhaust duct through holes correspond to the several explosion-proof valves of the lithium battery top one by one.

3. The lithium battery module smoke exhaust air duct of claim 2, wherein: The edge of the smoke exhaust duct through hole close to the side of the explosion-proof valve of the lithium battery is provided with a smoke exhaust duct back convex, and the smoke exhaust duct back convex corresponds to the explosion-proof valve of the lithium battery one by one.

4. The lithium battery module smoke exhaust air duct of claim 2, wherein: The edge of the smoke exhaust duct away from the side of the explosion-proof valve of the lithium battery is provided with a smoke exhaust duct front convex, the edge of the side of the busbar attached to the smoke exhaust duct is provided with a back groove, and the back groove and the smoke exhaust duct front convex are bonded by glue.

5. The lithium battery module smoke exhaust air duct of claim 1, wherein: A PC insulating sheet covering the top of the busbar and the smoke exhaust duct is arranged on the top of the busbar.

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