A battery box

Abstract

The application discloses a battery box and relates to the technical field of power equipment. The battery box comprises a box body for placing a battery, a door plate structure connected to the box body and provided with a ventilation structure, a sealing shell connected to the door plate structure to form a flow passage, the ventilation structure being communicated with an inner cavity of the box body through the flow passage, a ventilation sealing structure arranged in the flow passage, one side of the ventilation sealing structure close to the ventilation structure being a dustproof body, and the other side of the ventilation sealing structure away from the ventilation structure being a sealing body. The periphery of the dustproof body is arranged in close contact with the cavity wall of the flow passage, and a gap is arranged between the periphery of the sealing body and the cavity wall of the flow passage. When water is accumulated in the flow passage, the sealing body moves and blocks the airflow outlet position of the flow passage. When the flow passage is drained, the sealing body moves under the action of gravity and unblocks the airflow outlet position of the flow passage. The battery box can automatically prevent water, meet the air intake and dust prevention requirements, and ensure reliable use of the battery.

Description

Technical Field

[0001] This invention relates to the field of power equipment technology, and more specifically, to a battery box. Background Technology

[0002] Rail transit vehicles are equipped with battery boxes to provide power. Hydrogen gas is produced during battery charging. To avoid the risk of explosion, the gas inside the battery box needs to be released promptly. Therefore, the battery box is equipped with an air inlet and a hydrogen vent to allow the hydrogen gas produced during battery charging to be discharged outside the box.

[0003] In practical applications, battery boxes are often located outside the vehicle. Exposure to severe weather conditions such as rain, snow, or sandstorms increases the risk of water and dust entering the box. Using louvered air intakes allows water and dust to enter the battery box, potentially causing short circuits or corrosion.

[0004] In summary, how to make the air inlet of the battery box simultaneously meet the requirements of air intake, waterproofing, and dustproofing is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a battery box that can simultaneously meet the requirements of air intake, waterproofing and dustproofing.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A battery box, comprising: The enclosure is used to house the storage batteries; The door panel structure is connected to the box body and is equipped with a ventilation structure; A sealed housing is connected to the door panel structure to form a flow cavity, and the ventilation structure communicates with the inner cavity of the housing through the flow cavity; A ventilation and sealing structure is provided inside the flow cavity. The side of the ventilation and sealing structure closest to the ventilation structure is a dustproof body, and the side of the ventilation and sealing structure away from the ventilation structure is a sealing body. The dustproof body is circumferentially fitted to the cavity wall of the flow cavity, and a gap is provided between the circumferential of the sealing body and the cavity wall of the flow cavity. When water accumulates in the flow chamber, the sealing body moves and blocks the airflow outlet of the flow chamber; when the flow chamber is drained, the sealing body moves under the action of gravity and releases the blockage of the airflow outlet of the flow chamber.

[0007] Preferably, the sealing housing has a vent on the side near the sealing body, the outer circumferential dimension of the sealing body away from the dustproof body is smaller than the size of the vent, and the outer circumferential dimension of the sealing body near the dustproof body is larger than the size of the vent.

[0008] Preferably, the sealing body includes a first wedge-shaped surface and a second wedge-shaped surface connected thereto, the bottoms of the first wedge-shaped surface and the second wedge-shaped surface are both connected to the dustproof body, and the tops of the first wedge-shaped surface and the second wedge-shaped surface meet at the same narrow opening plane.

[0009] Preferably, a flow area is provided between at least one edge of the sealing body and the corresponding edge of the dustproof body, and the dustproof body is connected to the vent through the flow area.

[0010] Preferably, the outer periphery of the sealing body gradually decreases in the direction away from the dustproof body, and the maximum outer periphery of the sealing body is larger than the size of the vent.

[0011] Preferably, the sealing housing has an inclined surface on the side near the ventilation structure, the inclined surface is oriented toward the ventilation structure, and the bottom edge of the inclined surface is flush with or higher than the bottom edge of the ventilation structure.

[0012] Preferably, the ventilation structure is provided with a limiting portion extending toward the flow cavity, the limiting portion being used to support and limit the side of the dustproof body away from the sealing body.

[0013] Preferably, the plurality of ventilation structures are arranged along the height direction of the door panel structure. The ventilation structure near the sealing body includes a first part located outside the flow cavity and a second part located inside the flow cavity. The second part is bent relative to the first part and forms the limiting part that supports a portion of the dustproof body.

[0014] Preferably, the door panel structure is provided with a disassembly hole, which is connected to the flow cavity and connected to a sealing plate. The sealing plate can close or open the disassembly hole to disassemble the ventilation and sealing structure.

[0015] Preferably, the sealing plate includes a first edge and a second edge arranged along the height direction, the first edge being fixed to the door panel structure and the second edge being fixed to the ventilation structure.

[0016] The battery box provided by this invention includes a box body, a door panel structure, a sealing shell, and a ventilation and sealing structure. Specifically, the box body is used to house the battery, and the door panel structure is connected to the box body to close or open the box opening. The door panel has a ventilation structure, and the sealing shell is connected to the door panel structure to form a flow cavity. Air entering through the ventilation structure can be sent into the inner cavity of the box through the flow cavity to expel hydrogen gas inside the box. The side of the ventilation and sealing structure closer to the ventilation structure is a dustproof body, and the side of the ventilation and sealing structure away from the ventilation structure is a sealing body. The dustproof body is circumferentially fitted to the cavity wall of the flow cavity, and there is a gap between the circumferential of the sealing body and the cavity wall of the flow cavity for ventilation. In normal rainy or snowy weather or when high-pressure water flow cleaning causes water to enter the flow cavity but does not cause water accumulation, the dustproof body in the flow cavity will prevent splashing rainwater or flushing water from entering the side of the flow cavity closer to the ventilation structure. The side of the flow cavity closer to the ventilation structure itself also has a certain amount of space, so even if splashing rainwater or flushing water enters the flow cavity, it will not flow to the airflow outlet of the flow cavity, thus achieving a waterproof effect. However, in severe rainy or snowy weather or other harsh environments, if water accumulates in the flow chamber, the sealing body, under buoyancy, will move and block the airflow outlet of the flow chamber, achieving automatic waterproofing and preventing water from entering the chamber. After the rainwater is drained, the sealing body moves under gravity and releases the blockage at the airflow outlet of the flow chamber, allowing air to enter for hydrogen venting and the dustproof body to perform dustproofing.

[0017] The beneficial effects of this invention are as follows: during battery charging, air can enter the battery box and the generated hydrogen gas can be discharged from the box in a timely manner; in dusty environments, dust can be prevented from entering the battery box, keeping the box clean; during rainy weather or high-pressure water washing, rainwater can be prevented from entering the cabinet; when the battery cabinet is submerged, it can be automatically sealed to prevent the battery from being submerged in water. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of the battery box provided by the present invention; Figure 2 A schematic diagram of the air intake structure provided by the present invention; Figure 3 for Figure 2 Back view; Figure 4 for Figure 2 Exploded view of the structure; Figure 5 This is a schematic diagram of the structure of the sealing housing provided by the present invention; Figure 6 for Figure 5 Back view; Figure 7 This is a schematic diagram of the door panel structure provided by the present invention; Figure 8 This is a schematic diagram of the ventilation and sealing structure provided by the present invention; Figure 9 This is a schematic diagram of the air intake structure without a ventilation and sealing structure installed. Figure 10 A schematic diagram of the overall cross-section of the air intake structure when installing the ventilation and sealing structure; Figure 11 This is a rear view of the air intake structure when it is not submerged in water; Figure 12 This is a cross-sectional view of the air intake structure when it is not submerged in water; Figure 13 This is a rear view of the air intake structure when submerged in water; Figure 14 This is a cross-sectional view of the air intake structure when submerged in water.

[0020] Figures 1-14 In the accompanying drawings, the reference numerals include: 1-Box body; 2-Exhaust port; 3-Sealing plate; 4-Ventilation structure; 5-Door panel structure; 6-Flow cavity; 7-Ventilation sealing structure; 8-Sealed shell; 41-Limiting part; 51-Disassembly hole; S1-First edge; S2-Second edge; 71-Dustproof body; 72-Sealing body; 721-First wedge surface; 722-Second wedge surface; 81-Ventilation port; 82-Inclined surface. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] The core of this invention is to provide a battery box that achieves ventilation, dustproof, and waterproof functions with a simple structure, preventing rainwater or dust from entering the box.

[0023] The battery box provided by this invention includes: a box body 1, a door panel structure 5, a sealed shell 8, and a ventilation and sealing structure 7. Please refer to [reference needed]. Figure 1 , Figure 2 The intake structure includes the door panel structure 5, the sealing housing 8, and the ventilation sealing structure 7 as an integral structural component. Figure 2 The meaning is as shown.

[0024] Box 1 is used to house the battery. The battery here can be either a traction battery or a control battery, and there are no specific restrictions.

[0025] The door panel structure 5 is connected to the housing 1 and is equipped with a ventilation structure 4. The door panel structure 5 is specifically designed to close or open the opening of the housing 1, allowing for disassembly and assembly relative to the housing 1 as needed. The ventilation structure 4 is specifically a vent, which can be a vent directly opened in the door panel structure 5, or a vent formed by the cooperation of structural components and the door panel structure 5, as long as it meets the requirement of air entering the housing 1.

[0026] For example, ventilation structure 4 is a through hole opened on door panel structure 5. When hydrogen is generated during the use of the battery in the box 1, the hydrogen can be introduced through the through hole and discharged outside the box 1 through the exhaust port 2 installed on the box 1, so as to ensure the reliable safety of the battery.

[0027] For example, ventilation structure 4 is specifically a structure formed by installing grilles, filters, and louvers on door panel structure 5, which allows air to enter. The specific structure can be determined according to the usage requirements and is not limited.

[0028] Please refer to Figure 9 , Figure 10 The sealed housing 8 is connected to the door panel structure 5 to form a flow cavity 6. The ventilation structure 4 is connected to the inner cavity of the box 1 through the flow cavity 6. Specifically, the flow cavity 6 is the channel for air to enter the box 1. Air enters through the ventilation structure 4 and flows into the inner cavity of the box 1 through the flow cavity 6, so as to discharge the hydrogen generated in the box 1 through the exhaust port 2.

[0029] The connection between the sealed housing 8 and the door panel structure 5 can be achieved by welding. This ensures the reliability of the installation while allowing air to directly enter the flow cavity 6 along the ventilation structure 4, preventing air from escaping through the joint gaps, and ensuring the reliable discharge of hydrogen from the box 1, thus guaranteeing safe and reliable use.

[0030] Please refer to Figure 8 , Figure 12 , Figure 13 The ventilation sealing structure 7 is located inside the flow cavity 6. The side of the ventilation sealing structure 7 closest to the ventilation structure 4 is the dustproof body 71, and the side of the ventilation sealing structure 7 away from the ventilation structure 4 is the sealing body 72. The dustproof body 71 is circumferentially attached to the cavity wall of the flow cavity 6, and there is a gap between the circumferential of the sealing body 72 and the cavity wall of the flow cavity 6.

[0031] It should be noted that the dustproof body 71 has a porous structure and a density less than water, which can prevent dust from entering the box 1 through the ventilation structure 4; while the sealing body 72 has a density less than water, a soft and airtight structure, so dust will not enter the box 1 through it. In the case of water immersion, when a large amount of water accumulates in the flow cavity 6, the sealing body 72 can float and block the flow path to prevent water from entering the box 1, thus ensuring the waterproof performance of the box.

[0032] The dustproof body 71 is circumferentially fitted to the cavity wall of the flow cavity 6, meaning that the dustproof body 71 can reliably intercept dust entering through the ventilation structure 4, and prevent dust from entering the box 1 through gaps while maintaining a complete fit, thus achieving the dustproof effect. Meanwhile, there is a gap between the sealing body 72 and the cavity wall of the flow cavity 6. This gap is specifically designed to allow air to flow through the porous structure of the dustproof body 71 to the airflow outlet of the flow cavity 6, and further flow into the box 1, so that hydrogen gas is generated and discharged from the box 1.

[0033] Specifically, a gap is created between the circumferential direction of the sealing body 72 and the cavity wall of the flow cavity 6. This can be achieved by setting the shape of the sealing body 72, making the size of the sealing body 72 slightly smaller, so that a certain gap is maintained between several positions of the sealing body 72 and the cavity wall of the flow cavity 6 to facilitate the flow of air.

[0034] Specifically, such as Figures 11 to 12 In the state of becoming Figures 13 to 14 When water accumulates in the flow chamber 6, the sealing body 72 moves and blocks the airflow outlet of the flow chamber 6. The water accumulation here is different from that in normal rainy or snowy weather or in flushing operation scenarios. In this case, only a small amount of liquid enters the flow chamber 6. The dustproof body 71 will play a certain blocking role to prevent splashing rainwater or flushing water from flowing to the airflow outlet of the flow chamber 6, thus ensuring the waterproof effect of the box.

[0035] In the event of water accumulation, such as during severe rain or snow when the battery box is submerged, rainwater will accumulate in the flow cavity 6. The ventilation and sealing structure 7 will float and move towards the airflow outlet of the flow cavity 6 under the action of the rainwater entering and accumulating at the ventilation structure 4, until the sealing body 72 blocks the airflow outlet of the flow cavity 6. Since the sealing body 72 is a soft and airtight structure, rainwater will no longer flow into the box 1 through the airflow outlet, thus achieving a waterproof effect.

[0036] The sealing body 72 can refer to the position of blocking the airflow outlet of the flow cavity 6, which can mean that it extends out of the outlet position and blocks it, or it can refer to blocking the outlet position inside the flow cavity 6. The specific method can be determined according to the actual situation and there is no restriction.

[0037] When the flow chamber 6 drains, the sealing body 72 moves under gravity, releasing the blockage at the airflow outlet of the flow chamber 6. In this situation, as the water level decreases, rainwater gradually drains from the flow chamber 6, eliminating the floating force on the ventilation sealing structure 7. At this point, under the overall gravity of the ventilation sealing structure 7, it will fall freely, allowing the sealing body 72 to move away from the outlet position, releasing the blockage at the airflow outlet of the flow chamber 6. Normal ventilation can then proceed, thus assisting in the discharge of hydrogen gas generated inside the housing 1. Figure 11 , Figure 12 .

[0038] Furthermore, under normal weather conditions, the ventilation sealing structure 7 is in its initial position, such as... Figure 11 , Figure 12 Thus, dust can be prevented by the dustproof body 71, preventing dust from entering the box 1, while air can smoothly enter the box 1 through the ventilation structure 4 and the flow cavity 6 to discharge hydrogen. Thus, the air intake is satisfied while the dustproof effect is achieved.

[0039] With the aforementioned battery box, during battery charging, the flow chamber 6 allows air to enter and promptly expel the generated hydrogen gas from the box 1; in dusty environments, the ventilation and sealing structure 7 within the flow chamber 6 prevents dust from entering the battery box, keeping the box 1 clean; during rainy weather or high-pressure water cleaning, the ventilation and sealing structure 7 within the flow chamber 6 prevents rainwater from entering the box; when the battery cabinet is submerged, the ventilation and sealing structure 7 within the flow chamber 6 can move and automatically seal the airflow outlet, preventing the battery from being submerged in water and achieving a waterproof effect.

[0040] Based on the above embodiments, please refer to Figure 5 , Figure 8 The sealing housing 8 has a vent 81 on the side near the sealing body 72. The outer circumference of the sealing body 72 away from the dustproof body 71 is smaller than the size of the vent 81, and the outer circumference of the sealing body 72 near the dustproof body 71 is larger than the size of the vent 81.

[0041] The design of the vent 81 of the sealed housing 8 is an opening at the airflow outlet of the flow cavity 6, which allows air to enter the housing 1 through the vent 81 to expel the hydrogen gas generated inside the housing 1 and ensure the safety and reliability of the battery.

[0042] The location of the ventilation opening 81 in the specific sealed housing 8 can be changed according to the requirements, and the specific shape can also be flexibly selected according to the situation.

[0043] For example, the ventilation opening 81 can be a long strip or a round hole, and the ventilation sealing structure 7 can be adapted to its shape.

[0044] The outer circumference of the sealing body 72 on the side away from the dustproof body 71 is smaller than the size of the vent 81, and the outer circumference of the sealing body 72 on the side closer to the dustproof body 71 is larger than the size of the vent 81. This size setting allows the ventilation sealing structure 7 to float up when rainwater accumulates, so that the sealing body 72 can reliably block the vent 81, thereby preventing rainwater from entering the box 1.

[0045] In this embodiment, as Figure 14 Specifically, when the ventilation and sealing structure 7 floats, the side of the sealing body 72 away from the dustproof body 71 will extend out of the ventilation opening 81, while the other side will remain in the flow cavity 6. In this way, the sealing body 72 can be partially stuck at the ventilation opening 81, ensuring a reliable sealing effect and reliable waterproof performance.

[0046] In this embodiment, the size of the middle part of the sealing body 72 can be a single gradual change or multiple varying sizes, depending on the actual situation.

[0047] Based on any of the above embodiments, please refer to Figure 8 The sealing body 72 includes a first wedge-shaped surface 721 and a second wedge-shaped surface 722 connected thereto. The bottoms of the first wedge-shaped surface 721 and the second wedge-shaped surface 722 are both connected to the dustproof body 71, and the tops of the first wedge-shaped surface 721 and the second wedge-shaped surface 722 meet at the same narrow opening plane.

[0048] As shown in the figure, the sealing body 72 has two first wedge-shaped surfaces 721 and two second wedge-shaped surfaces 722 arranged circumferentially. This arrangement allows the sealing body 72 to reliably block the vent 81 when it floats up, and to provide guidance for gradually detaching from the vent 81 when it sinks under the influence of gravity. This ensures the reliable and smooth movement of the sealing body 72 before and after waterproofing, and guarantees the waterproofing effect under water accumulation conditions and the air intake effect under normal conditions.

[0049] In this embodiment, the tops of the first wedge-shaped surface 721 and the second wedge-shaped surface 722 meet at the same narrow plane. Specifically, based on the fact that the outer perimeter of the sealing body 72 on the side away from the dustproof body 71 is smaller than the size of the vent 81, and the outer perimeter of the sealing body 72 on the side closer to the dustproof body 71 is larger than the size of the vent 81, the top plane of the sealing body 72 is a relatively narrow plane.

[0050] Based on any of the above embodiments, please refer to Figure 8 A flow area is provided between at least one edge of the sealing body 72 and the corresponding edge of the dustproof body 71, and the dustproof body 71 is connected to the vent 81 through the flow area. Alternatively, the sealing body 72 is connected to the top portion of the dustproof body 71, and the remaining portion of the dustproof body 71 is used to form the flow area, allowing air to flow smoothly to the vent 81, thereby ensuring reliable discharge of hydrogen generated inside the housing 1.

[0051] The dustproof body 71 is connected to the circulation area and the ventilation port 81. Specifically, the porous structure of the dustproof body 71 allows air to flow to the circulation area and into the box 1 through the ventilation port 81 at the outlet of the circulation cavity 6, thereby achieving the effect of expelling hydrogen from the box 1.

[0052] In this embodiment, the size of the specific flow area is determined in conjunction with the actual required size of the sealing body 72, ensuring that the sealing body 72 can float up and block the ventilation opening 81 in the event of rainwater accumulation.

[0053] The provision of a flow area between at least one edge of the sealing body 72 and the corresponding edge of the dustproof body 71 means that, for example, a flow area is provided between one edge of the sealing body 72 and the corresponding edge of the dustproof body 71; or, both edges of the sealing body 72 and the corresponding edges of the dustproof body 71 are provided with flow areas.

[0054] Based on any of the above embodiments, please refer to Figure 8 Along the direction away from the dustproof body 71, the outer periphery of the sealing body 72 gradually decreases, and the maximum outer periphery of the sealing body 72 is larger than the size of the vent 81.

[0055] The tapered design of the sealing body 72 ensures a smooth and efficient sealing or unsealing of the vent 81, guaranteeing reliable automatic waterproofing without manual intervention. After rainwater is discharged, it automatically resets under gravity, thus enabling automatic ventilation and dust prevention.

[0056] Please refer to Figures 11 to 14 Under normal ventilation conditions, with the support of the limiting part 41 of the ventilation structure 4, the sealing body 72 is located in the flow cavity 6. At this time, an annular gap is formed between the outer periphery of the sealing body 72 and the flow cavity 6. Outside air can enter the box 1 through the ventilation structure 4 and this gap to expel the hydrogen gas generated in the box 1. When rainwater or splashing water enters the vent 81 from the side of the dustproof body 71 and the liquid accumulates in the vent 81, the ventilation sealing structure 7 can float in the flow cavity 6. As the ventilation sealing structure 7 floats, the smaller part of the outer periphery of the sealing body 72 enters the vent 81 until the part with an outer periphery equal to the size of the vent 81 contacts the vent 81, at which point the vent 81 is sealed. The larger end, which is larger than the inner diameter of the vent 81, is placed in the flow cavity 6, blocking the liquid from entering the box and achieving a reliable automatic waterproofing effect without manual intervention. When the rainwater is drained and the liquid pressure in the vent 81 disappears, the sealing body 72 returns to its initial position under its own weight and the airflow pressure inside the box. The annular gap between the sealing body 72 and the flow cavity 6 is reformed, restoring airflow and dust prevention, thereby realizing the automatic ventilation and dustproof / waterproof function switching.

[0057] Based on any of the above embodiments, please refer to the figure. The sealing housing 8 is provided with an inclined surface 82 on the side near the ventilation structure 4. The inclined surface 82 is disposed towards the ventilation structure 4, and the bottom edge of the inclined surface 82 is flush with or higher than the bottom edge of the ventilation structure 4.

[0058] The inclined surface 82 is designed so that when encountering rain or snow, or when the vehicle is being washed and splashed with water, the water that enters the flow cavity 6 through the gap in the ventilation structure 4 can flow out in the opposite direction along the inclined surface 82 and out through the gap in the ventilation structure 4, thus ensuring the waterproof effect of the box.

[0059] In one specific case, the bottom edge of the inclined surface 82 is flush with the bottom edge of the ventilation structure 4, which facilitates assembly and alignment, and also facilitates the automatic discharge of rainwater directly through the inclined surface 82.

[0060] In another specific case, the bottom edge of the inclined surface 82 is higher than the bottom edge of the ventilation structure 4 to prevent rainwater from entering the circulation cavity 6. If rainwater flows to the position of the inclined surface 82, it can be reversed and flow out of the box through the setting of the inclined surface 82.

[0061] Based on any of the above embodiments, please refer to Figure 9 , Figure 10 The ventilation structure 4 is provided with a limiting part 41 extending toward the flow cavity 6. The limiting part 41 is used to support and limit the side of the dustproof body 71 away from the sealing body 72.

[0062] In the installed state, the limiting part 41 provides axial support to the inner side of the dustproof body 71, clamping and limiting the dustproof body 71 on the door panel structure 5; when the airflow or vibration in the battery box acts on the dustproof body 71, the limiting part 41 can prevent the dustproof body 71 from loosening or displacing into the flow cavity 6, ensuring the reliable operation of the ventilation sealing structure 7; it should be noted that if water flows into the flow cavity 6, the dustproof body 71 can move into the flow cavity 6, float in the flow cavity 6 and move further until it blocks the vent 81, thereby achieving a waterproof effect.

[0063] The limiting part 41 can be in the form of a plate, hook, ring, or semi-open structure, as long as it can provide support and limiting effect. It can be flexibly changed according to actual needs.

[0064] Based on any of the above embodiments, please refer to Figure 10Multiple ventilation structures 4 are arranged along the height direction of the door panel structure 5. The ventilation structure 4 near the sealing body 72 includes a first part located outside the flow cavity 6 and a second part located inside the flow cavity 6. The second part is bent relative to the first part and forms a limiting part 41 that supports a portion of the dustproof body 71.

[0065] Among them, the ventilation structure 4 closest to the sealing body 72 refers to the one of the multiple ventilation structures 4 that is closest to the sealing body 72. The ventilation structure 4 closest to the sealing body 72 is used to provide limiting support.

[0066] Specifically, taking the ventilation structure 4 as a louver as an example, the limiting part 41 can be formed directly on the louver through a bending process. The limiting part 41 supports a part of the dustproof body 71 so as to support the ventilation sealing structure 7 under normal working conditions; and limits the ventilation sealing structure 7 that falls under its own weight after drainage in rainy or snowy weather, thus limiting its maximum falling distance.

[0067] The gaps between multiple ventilation structures 4 form channels for air to enter. With the help of the porous structure of the dustproof body 71, the setting of the circulation area, and the setting of the ventilation opening 81, air circulation inside and outside the battery box can be guaranteed to meet the heat dissipation requirements. Furthermore, the sealing body 72 blocks external rainwater, and the dustproof body 71 blocks the direct intrusion of dust, thereby improving the overall protection level.

[0068] Based on any of the above embodiments, please refer to Figure 2 , Figure 3 , Figure 4 The door panel structure 5 is provided with a disassembly hole 51, which is connected to the flow cavity 6 and connected to a sealing plate 3. The sealing plate 3 can close or open the disassembly hole 51 to disassemble and install the ventilation sealing structure 7.

[0069] The disassembly hole 51 is a through hole structure opened in the door panel structure 5. This disassembly hole 51 is connected to the flow cavity 6. When it is necessary to disassemble or assemble the ventilation sealing structure 7, the sealing plate 3 can be removed from the door panel structure 5 to facilitate the replacement or maintenance of the ventilation sealing structure 7.

[0070] It should be noted that, since the ventilation sealing structure 7 has a certain degree of flexibility, as long as the disassembly hole 51 is exposed, the operator can reach into the flow cavity 6 and pull the ventilation sealing structure 7 to remove it from the flow cavity 6. The disassembly hole 51 does not need to be too large, so as to ensure the structural strength of the door panel structure 5 and ensure that air can reliably and smoothly enter the box 1 from the flow cavity 6.

[0071] In this embodiment, the installation form of the sealing plate 3 is a detachable connection. Specifically, it can be connected by fasteners such as screws and nuts, or by direct snap-fit ​​connection, or by other forms, without limitation.

[0072] Furthermore, in this embodiment, after the maintenance of the ventilation sealing structure 7 is completed, the disassembly hole 51 is sealed by the sealing plate 3 to ensure the sealing performance of the housing 1. The sealing plate 3 can seal the disassembly hole 51 using a sealing gasket; when the sealing plate 3 is installed on the door panel structure 5, it can be pressed tightly against the sealing gasket to achieve a reliable seal on the disassembly hole 51.

[0073] Based on any of the above embodiments, please refer to Figure 12 The sealing plate 3 includes a first edge S1 and a second edge S2 arranged along the height direction. The first edge S1 is fixed to the door panel structure 5, and the second edge S2 is fixed to the ventilation structure 4.

[0074] Both the first edge S1 and the second edge S2 extend beyond the disassembly hole 51. Specifically, the disassembly hole 51 can be closed or opened by the sealing plate 3. When the sealing plate 3 closes the disassembly hole 51, air will only enter the circulation cavity 6 from the ventilation structure 4 and then be sent into the box 1 through the ventilation port 81 to discharge the hydrogen generated in the box 1.

[0075] The first edge S1 is fixed to the door panel structure 5, and the second edge S2 is fixed to the ventilation structure 4. Based on the provision of multiple ventilation structures 4, the second edge S2 is fixed to the ventilation structure 4 closest to the ventilation sealing structure 7.

[0076] The specific form in which the first edge S1 is fixed to the door panel structure 5 and the second edge S2 is fixed to the ventilation structure 4 can both be achieved by using fasteners, such as... Figure 4 This is intended to convey a meaning, but is not limited to it; it can be flexibly modified according to the actual situation.

[0077] Taking the sealing plate 3 as an example of a square structure, the corresponding disassembly hole 51 can also be square or round, so that it can be easily disassembled and reliably sealed by the sealing plate.

[0078] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0079] The present invention has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the invention. The descriptions of these embodiments are merely for the purpose of helping to understand the method and core ideas of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from its principles, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A battery box, characterized in that, include: Box (1), used to house the storage battery; The door panel structure (5) is connected to the box body (1) and is provided with a ventilation structure (4); A sealed housing (8) is connected to the door panel structure (5) to form a flow cavity (6), and the ventilation structure (4) is connected to the inner cavity of the box body (1) through the flow cavity (6); A ventilation sealing structure (7) is provided inside the flow cavity (6). The side of the ventilation sealing structure (7) closer to the ventilation structure (4) is a dustproof body (71), and the side of the ventilation sealing structure (7) away from the ventilation structure (4) is a sealing body (72). The dustproof body (71) is circumferentially attached to the cavity wall of the flow cavity (6), and a gap is provided between the circumferential of the sealing body (72) and the cavity wall of the flow cavity (6). When water accumulates in the flow chamber (6), the sealing body (72) moves and blocks the airflow outlet of the flow chamber (6); when the flow chamber (6) drains water, the sealing body (72) moves under the action of gravity and releases the blockage of the airflow outlet of the flow chamber (6).

2. The battery box according to claim 1, characterized in that, The sealing housing (8) has a vent (81) on the side near the sealing body (72). The outer perimeter of the sealing body (72) away from the dustproof body (71) is smaller than the size of the vent (81), and the outer perimeter of the sealing body (72) near the dustproof body (71) is larger than the size of the vent (81).

3. The battery box according to claim 2, characterized in that, The sealing body (72) includes a first wedge-shaped surface (721) and a second wedge-shaped surface (722) connected thereto. The bottoms of the first wedge-shaped surface (721) and the second wedge-shaped surface (722) are both connected to the dustproof body (71). The tops of the first wedge-shaped surface (721) and the second wedge-shaped surface (722) meet at the same narrow opening plane.

4. The battery box according to claim 3, characterized in that, A flow area is provided between at least one side edge of the sealing body (72) and the corresponding side edge of the dustproof body (71), and the dustproof body (71) is connected to the ventilation opening (81) through the flow area.

5. The battery box according to claim 4, characterized in that, Along the direction away from the dustproof body (71), the outer periphery of the sealing body (72) gradually decreases, and the maximum outer periphery of the sealing body (72) is larger than the size of the vent (81).

6. The battery box according to claim 1, characterized in that, The sealing housing (8) has an inclined surface (82) on one side near the ventilation structure (4). The inclined surface (82) is oriented toward the ventilation structure (4), and the bottom edge of the inclined surface (82) is flush with or higher than the bottom edge of the ventilation structure (4).

7. The battery box according to claim 6, characterized in that, The ventilation structure (4) is provided with a limiting part (41) extending toward the flow cavity (6), the limiting part (41) being used to support and limit the side of the dustproof body (71) away from the sealing body (72).

8. The battery box according to claim 7, characterized in that, Multiple ventilation structures (4) are arranged along the height direction of the door panel structure (5). The ventilation structure (4) close to the sealing body (72) includes a first part located outside the flow cavity (6) and a second part located inside the flow cavity (6). The second part is bent relative to the first part and forms the limiting part (41) supporting a portion of the dustproof body (71).

9. The battery box according to any one of claims 1 to 8, characterized in that, The door panel structure (5) is provided with a disassembly hole (51), which is connected to the flow cavity (6) and connected to a sealing plate (3). The sealing plate (3) can close or open the disassembly hole (51) to disassemble the ventilation sealing structure (7).

10. The battery box according to claim 9, characterized in that, The sealing plate (3) includes a first edge (S1) and a second edge (S2) arranged along the height direction. The first edge (S1) is fixed to the door panel structure (5), and the second edge (S2) is fixed to the ventilation structure (4).

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