Exhaust structure of power battery system

Abstract

The utility model discloses an exhaust structure of a power battery system, which comprises a flow guide component and an exhaust pipeline connected with the flow guide component, the flow guide component is arranged corresponding to an anti-explosion valve of a battery cell, and the exhaust pipeline extends to the outside of a box body of the power battery system. A plurality of flow guide openings are formed in the flow guide assembly, the flow guide openings correspond to the anti-explosion valves in a one-to-one mode, an exhaust opening is further formed in the flow guide assembly, and the exhaust opening is connected with the exhaust pipeline. According to the design of the scheme, under the condition that the battery cell is abnormal, the battery cell explosion-proof valve is opened, high-temperature and high-heat harmful gas generated by the reaction of an electrolyte chemical material in the battery cell enters the exhaust pipeline after being collected by the flow guide assembly, then is conveyed to the outside of the battery system box body through the exhaust pipeline, and is exhausted to the outside of a vehicle according to a planned and designed route; harmful gas is prevented from entering the internal cavity of the power battery system and being dispersed into the driving cabin through the cooling air inlet pipeline mechanism of the whole bag so as not to cause harm.

Description

Technical Field

[0001] The utility model relates to the technical field of power battery systems, and more specifically, to an exhaust structure of a power battery system. Background Art

[0002] The power battery system is part of the powertrain of new energy vehicles, providing power for the vehicle's electrical system, including driving and energy recovery. Currently, power battery system safety is a key concern for many new energy vehicle users, particularly as it directly impacts the safety of their lives and property. In the event of thermal runaway, harmful gases generated by the reaction between the electrolyte and the positive and negative electrode materials within the battery cell cannot be effectively discharged from the vehicle, endangering the driver and passengers. Utility Model Content

[0003] The purpose of the utility model is to provide a power battery system exhaust structure to solve the technical problem that when the power battery system has thermal runaway, the gas generated by the system diffuses into the interior of the vehicle and poses a life hazard to the drivers and passengers inside.

[0004] The technical solution of the utility model provides an exhaust structure of a power battery system, comprising a flow guide component and an exhaust pipe connected to the flow guide component, wherein the flow guide component is arranged corresponding to the explosion-proof valve of the battery cell, and the exhaust pipe extends to the outside of the power battery system box;

[0005] The flow guide component is provided with a plurality of flow guide ports, and the plurality of flow guide ports correspond one to one with the explosion-proof valves. The flow guide component is also provided with an exhaust port, and the exhaust port is connected to the exhaust pipeline.

[0006] In a preferred embodiment, the guide assembly includes a guide plate fixed to the isolation plate, and a guide cavity is formed between the guide plate and the isolation plate.

[0007] In a preferred embodiment, the guide port is provided on the guide plate, the exhaust port is provided on the isolation plate, and there is one exhaust port.

[0008] In a preferred embodiment, a sealing ring is provided on the outer periphery of the guide port.

[0009] In a preferred embodiment, the exhaust pipeline includes a branch pipe and a main pipe.

[0010] In a preferred embodiment, a micro air pump is provided on the main pipe.

[0011] The beneficial effects of the technical solution of this utility model are:

[0012] In the design of this solution, when the battery cell is abnormal, the explosion-proof valve of the battery cell opens, and the high-temperature and hot harmful gases generated by the reaction of the electrolyte chemical materials inside the battery cell are collected by the guide component and enter the exhaust pipe. The exhaust pipe is then transported to the outside of the battery system box and discharged to the outside of the vehicle according to the planned design route, so as to prevent the harmful gases from entering the internal cavity of the power battery system and diffusing into the driver's compartment through the cooling air inlet duct mechanism of the whole package, thereby causing harm. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the overall structure of the utility model.

[0014] Figure 2 This is a side view of the position relationship between the exhaust port and the exhaust pipe of the utility model.

[0015] Figure 3 This is a schematic diagram of the location of the exhaust port on the power battery system of the utility model.

[0016] Figure 4 This is the disassembly diagram of the structure of the utility model.

[0017] Figure 5 This is another disassembled diagram of the structure of the utility model.

[0018] Figure 6 This is a schematic diagram of the overall structure of the diversion component of the utility model

[0019] Figure 7 For this utility model Figure 6 Enlarged view of area A in the middle.

[0020] Explanation of the reference numerals: 1 guide assembly, 2 guide plate, 3 isolation plate, 4 guide port, 5 exhaust port, 6 guide cavity, 7 sealing ring, 8 exhaust pipe, 9 branch pipe, 10 main pipe, 11 micro air pump, 12 power battery system, 13 explosion-proof valve, 14 power battery system box. DETAILED DESCRIPTION

[0021] The present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and convenience of description and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Numerous modifications and variations will be apparent to those skilled in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for specific applications.

[0022] like Figure 1-7As shown, the technical solution of the present invention provides an exhaust structure for a power battery system 12, comprising a flow guide assembly 1 and an exhaust pipe 8 connected to the flow guide assembly 1. The flow guide assembly 1 is provided corresponding to the explosion-proof valve 13 of the battery cell, and the exhaust pipe 8 extends to the outside of the power battery system case 14. In the event of an abnormality in the battery cell, the explosion-proof valve 13 of the battery cell opens, and the high-temperature and high-heat harmful gases generated by the reaction of the electrolyte chemical materials inside the battery cell are collected by the flow guide assembly 1 and enter the exhaust pipe 8. The gases are then transported by the exhaust pipe 8 to the outside of the power battery system case 14 and discharged to the outside of the vehicle according to the planned and designed route, thereby preventing the harmful gases from entering the internal cavity of the power battery system and diffusing into the driver's compartment through the cooling air inlet pipe mechanism of the entire package, thereby causing harm.

[0023] The flow guide assembly 1 is provided with a plurality of flow guide ports 4, each corresponding one-to-one with an explosion-proof valve 13. The flow guide assembly 1 is also provided with an exhaust port 5, which is connected to the exhaust pipe 8. The flow guide assembly 1 includes a flow guide plate 2 fixed to an isolation plate 3, forming a flow guide cavity 6 between the flow guide plate 2 and the isolation plate 3. The flow guide ports 4 are provided on the flow guide plate 2, and the exhaust port 5 is provided on the isolation plate 3. There is only one exhaust port 5. A sealing ring 7 is provided on the periphery of the flow guide port 4.

[0024] In the above scheme, the guide port 4 corresponds to the explosion-proof valve 13 one-to-one. When the explosion-proof valve 13 is opened, the harmful gas enters the guide cavity 6 through the guide port 4. The guide cavity 6 is an integral cavity to achieve gas aggregation. After the harmful gas is collected, the same exhaust port 5 enters the exhaust pipe 8. The exhaust port 5 extends to the outside of the power battery system 12, which is convenient for docking with the exhaust pipe 8. The sealing ring 7 is outside the explosion-proof valve 13 to ensure a tight connection between the guide plate 2 and the explosion-proof valve 13. The setting method of this scheme, while ensuring the original structure of the power battery system 12, has a separate abnormal exhaust channel for the battery cell, which is independent of the cooling pipeline in the box, to achieve effective discharge of harmful gases.

[0025] The exhaust pipe 8 includes a branch pipe 9 and a main pipe 10. Main pipe 10 is equipped with a micro-pump 11. A check valve is installed on the branch pipe 9. The micro-pump 11 on main pipe 10 quickly exhausts harmful gases from the pipe. Simultaneously, the air cooling assembly on the power battery system housing 14 dissipates heat from the interior of the housing.

[0026] Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without making any creative efforts should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in this utility model shall be implemented in accordance with conventional means in the field unless otherwise specified or limited.

Claims

1. A power battery system exhaust structure, characterized by: It includes a flow guide component and an exhaust pipe connected to the flow guide component, the flow guide component is arranged corresponding to the explosion-proof valve of the battery cell, and the exhaust pipe extends to the outside of the power battery system box; The flow guide component is provided with a plurality of flow guide ports, and the plurality of flow guide ports correspond one to one with the explosion-proof valves. The flow guide component is also provided with an exhaust port, and the exhaust port is connected to the exhaust pipeline.

2. The power battery system exhaust structure according to claim 1, characterized in that: The flow guide assembly includes a flow guide plate fixed to the isolation plate, and a flow guide cavity is formed between the flow guide plate and the isolation plate.

3. The power battery system exhaust structure according to claim 2, characterized in that: The guide port is arranged on the guide plate, the exhaust port is arranged on the isolation plate, and there is one exhaust port.

4. The power battery system exhaust structure according to claim 1, characterized in that: A sealing ring is provided on the outer periphery of the guide port.

5. The power battery system exhaust structure according to claim 1, characterized in that: The exhaust pipeline includes a branch pipe and a main pipe.

6. The power battery system exhaust structure according to claim 5, characterized in that: A micro air pump is provided on the main pipe.

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