An energy storage device

Abstract

This application relates to an energy storage device, which includes a battery compartment and a flow guiding system. The battery compartment houses a battery pack. During battery pack operation, waste liquid is generated. The flow guiding system is used to drain the waste liquid from the battery compartment, reducing the possibility of waste liquid submerging the battery pack and also reducing humidity inside the battery compartment. The flow guiding system includes an outlet component and a flow guiding component. The outlet component is disposed on the bottom wall of the battery compartment, with its end extending out of the battery compartment to drain the waste liquid. The flow guiding component is disposed on the side of the battery pack near the outlet component to guide the waste liquid to the outlet component. Under the influence of gravity, the waste liquid generated by the battery pack drips onto the flow guiding component and then flows through the flow guiding component to the outlet component, reducing the possibility of waste liquid splashing.

Description

Technical Field

[0001] This application relates to the field of energy storage technology, and more particularly to an energy storage device. Background Technology

[0002] The energy storage device has a battery compartment for housing the battery pack. A liquid cooling plate is installed on the bottom plate of the battery pack to dissipate heat from the battery cells, reducing the risk of thermal runaway or explosion due to overheating. Because of the temperature difference between the liquid cooling plate and the environment inside the battery compartment, condensation will form on the surface of the liquid cooling plate. Since multiple battery packs are stacked vertically within the battery compartment, if this condensation drips into or submerges the battery packs, it increases the risk of short circuits. Summary of the Invention

[0003] This application provides an energy storage device to solve the problem that condensate entering the battery pack can easily cause a short circuit.

[0004] This application provides an energy storage device, the energy storage device comprising:

[0005] A battery compartment for housing a battery pack;

[0006] A diversion system, which is disposed in the battery compartment, is used to drain the waste liquid generated by the battery pack from the battery compartment;

[0007] The flow guiding system includes an outlet component and a flow guide. The outlet component is disposed on the bottom wall of the battery compartment, and its end extends out of the battery compartment to outlet the waste liquid from the battery compartment. The flow guide is disposed on the side of the battery pack near the outlet component to guide the waste liquid to the outlet component.

[0008] In one possible implementation, the flow guide includes a connecting portion and a flow guide portion. The connecting portion is disposed on the bottom plate of the battery pack, and the flow guide portion is located on the side of the connecting portion away from the battery pack. Along the width direction of the energy storage device, the flow guide portion extends towards the side wall of the battery compartment.

[0009] In one possible implementation, the angle between the guide portion and the connecting portion is greater than 90°.

[0010] In one possible implementation, the angle between the flow guide and the connecting part is less than 90°, and the flow guide is inclined towards the bottom wall of the battery compartment along the depth direction of the battery compartment.

[0011] In one possible implementation, the battery compartment includes a mounting bracket on which the battery pack is mounted; the flow guide includes a connecting portion and a flow guide portion, the connecting portion being disposed on the side of the mounting bracket near the lead-out assembly, and the flow guide portion being located on the side of the connecting portion away from the battery pack and extending toward the battery pack.

[0012] In one possible implementation, the angle between the guide portion and the connecting portion is greater than 90°.

[0013] In one possible implementation, the angle between the flow guide and the connecting part is less than 90°, and the flow guide is inclined towards the bottom wall of the battery compartment along the depth direction of the battery compartment.

[0014] In one possible implementation, the lead-out assembly includes a lead-out member with its inflow end located on the bottom wall of the battery compartment and its outflow end extending out of the battery compartment.

[0015] In one possible implementation, the outlet assembly further includes a drainage tube, one end of which is connected to the outflow end of the outlet member, and the other end of which is connected to a collection tank.

[0016] In one possible implementation, the collection tank includes a first detection element for detecting whether coolant is present in the waste liquid within the collection tank.

[0017] In one possible implementation, the lead-out assembly includes a cover plate detachably mounted to the bottom wall of the battery compartment for sealing the inflow end of the lead-out component.

[0018] In one possible implementation, a second detection element is also provided inside the battery compartment. The second detection element is located on the side close to the lead-out component. The second detection element includes a probe, and the distance between the probe and the bottom wall of the battery compartment is 8 mm to 10 mm along the height direction of the energy storage device.

[0019] In one possible implementation, the bottom wall of the battery compartment is provided with at least two flow-guiding ramps, and the lowest point of the flow-guiding ramps is connected to the lead-out assembly along the height direction of the energy storage device; the inclination angle of the flow-guiding ramps is 0.4° to 0.8°.

[0020] This application relates to an energy storage device, which includes a battery compartment and a flow guiding system. The battery compartment houses a battery pack. During battery pack operation, waste liquid is generated. The flow guiding system is used to drain the waste liquid from the battery compartment, reducing the possibility of waste liquid submerging the battery pack and also reducing humidity inside the battery compartment. The flow guiding system includes an outlet component and a flow guiding component. The outlet component is disposed on the bottom wall of the battery compartment, with its end extending out of the battery compartment to drain the waste liquid. The flow guiding component is disposed on the side of the battery pack near the outlet component to guide the waste liquid to the outlet component. Under the influence of gravity, the waste liquid generated by the battery pack drips onto the flow guiding component and then flows through the flow guiding component to the outlet component, reducing the possibility of waste liquid splashing.

[0021] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit this application. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the energy storage device provided in the embodiments of this application;

[0023] Figure 2 One embodiment provided in this application Figure 1 A magnified view of the area at position I in the middle;

[0024] Figure 3 In another embodiment provided for the present application, Figure 1 A magnified view of the area at position I in the middle;

[0025] Figure 4 A schematic diagram of the bottom wall of the battery compartment and the lead-out assembly provided in an embodiment of this application;

[0026] Figure 5 This is a schematic diagram of the structure of the lead-out element provided in an embodiment of this application.

[0027] Figure label:

[0028] 1-Battery compartment;

[0029] 11- Mounting bracket;

[0030] 12-Guiding slope;

[0031] 2-Battery pack;

[0032] 3-Output components;

[0033] 31-Outlet;

[0034] 311 - Inflow end;

[0035] 312-Outflow end;

[0036] 32-Cover plate;

[0037] 4-Flow guide;

[0038] 41-Connecting part;

[0039] 42-Guide section;

[0040] 5-Second inspection item;

[0041] 6-High-pressure chamber;

[0042] 7-Fixing plate.

[0043] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. Detailed Implementation

[0044] To better understand the technical solution of this application, the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0045] It should be understood that the described embodiments are merely some, not all, of the embodiments in this application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0046] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The singular forms “a,” “the,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0047] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0048] It should be noted that the directional terms such as "upper," "lower," "left," and "right" described in the embodiments of this application are used to describe the angles shown in the accompanying drawings and should not be construed as limiting the embodiments of this application. Furthermore, in the context, it should be understood that when it is mentioned that an element is connected "upper" or "lower" to another element, it can be directly connected to the other element "upper" or "lower," or indirectly connected to the other element "upper" or "lower" through an intermediate element.

[0049] like Figure 1As shown in the figure, this application embodiment provides an energy storage device, which includes a battery compartment 1 and a high-voltage compartment 6. Along the height direction Z of the energy storage device, the high-voltage compartment 6 is located below the battery compartment 1. The energy storage device also includes a flow guiding system, which is installed in the battery compartment 1 and is used to drain the waste liquid generated in the battery compartment 1. The flow guiding system includes an outlet component 3 and a flow guide 4. The outlet component 3 is disposed on the bottom wall of the battery compartment 1, and its end extends out of the battery compartment 1 and into the high-voltage compartment 6 or the outside of the energy storage device, enabling it to drain the waste liquid out of the battery compartment 1. The flow guide 4 is disposed on the side of the battery pack 2 near the outlet component 3 and is used to guide the waste liquid generated by the battery pack 2 to the outlet component 3.

[0050] The bottom plate of battery pack 2 has flow channels through which coolant flows. The battery cells are mounted on the bottom plate, allowing the plate to absorb heat from the cells. The waste liquid can be condensate. Due to the temperature difference between the bottom plate of battery pack 2 and the environment inside battery compartment 1, condensate will form on the surface of the bottom plate of battery pack 2. An insulation layer is wrapped around the surface of the bottom plate of battery pack 2 to reduce the possibility of condensation. A mounting bracket 11 is provided inside battery compartment 1 for mounting battery pack 2. The side of the bottom plate of battery pack 2 inserts into the mounting bracket 11, which damages the insulation layer on both sides of the bottom plate, thus condensate will still form on both sides of the bottom plate of battery pack 2. Multiple battery packs 2 are spaced apart along the height direction Z of the energy storage device. A guide 4 is provided on the side of the battery pack 2 near the lead-out component 3. The condensate generated by the bottom plate of the battery pack 2 drips onto the guide 4, allowing the condensate to flow along the guide 4 to the bottom of the battery compartment 1. This reduces the possibility of condensate generated by the upper battery pack 2 falling into the lower battery pack 2, and reduces the possibility of short circuits in the battery pack 2.

[0051] A drain assembly 3 is installed on the bottom wall of the battery compartment 1. The condensate that drips to the bottom of the battery compartment 1 flows to the drain assembly 3 and flows out of the battery compartment 1 through the drain assembly, thereby reducing the possibility of condensate accumulation in the battery compartment 1, reducing the possibility of condensate submerging the battery pack 2, and also reducing the humidity in the battery compartment 1.

[0052] like Figure 2 As shown, in one possible embodiment, the flow guide 4 can be disposed on the battery pack 2 and located on the side of the battery pack 2 closer to the flow guiding assembly. The flow guide 4 includes a connecting portion 41 and a flow guiding portion 42. The connecting portion 41 is disposed on the bottom plate of the battery pack 2, and the flow guiding portion 42 is located on the side of the connecting portion 41 away from the battery pack 2. The flow guide 4 can be an L-shaped structure. The connecting portion 41 extends along the height direction Z of the energy storage device for connecting with the bottom plate of the battery pack 2. The flow guiding portion 42 extends along the width direction X of the energy storage device. The edge position where the bottom plate of the battery pack 2 connects with the mounting bracket 11 corresponds to the flow guiding portion 42, and the condensate generated by the battery pack 2 can drip onto the flow guiding portion 42.

[0053] The connecting part 41 can be connected to the bottom plate of the battery pack 2 by welding, bonding or other methods, or it can be an integrally formed structure, so that the guide part 4 is fixed to the battery pack 2. The guide part 42 corresponds to the edge of the battery pack 2, so that condensate can drip onto the guide part 42 and drip along the guide part 42 to the bottom wall of the battery compartment 1, reducing the possibility of condensate dripping into the battery pack 2 and causing a short circuit.

[0054] In one possible embodiment, both sides of the battery pack 2 are connected to the mounting bracket 11, and therefore, a flow guide 4 is provided on both sides of the battery pack 2. The flow guide 4 has an L-shaped structure, and there is an included angle between the flow guide portion 42 and the connecting portion 41, which can be greater than 90°.

[0055] One end of the guide section 42 is connected to the connecting section 41, and the other end extends along the width direction X of the energy storage device towards the side wall of the battery compartment 1. The angle between the guide section 42 and the connecting section 41 is greater than 90°. The condensate dripping onto the guide section 42 can flow along the guide section 42 to the side wall of the battery compartment 1, so that the condensate can flow along the side wall of the battery compartment 1 to the bottom wall, reducing the possibility of condensate splashing.

[0056] In one possible embodiment, the angle between the guide portion 42 and the connecting portion 41 can be less than 90°, and the condensate dripping onto the guide portion 42 will flow along the guide portion 42 to the position where the guide portion 42 and the connecting portion 41 are connected. Along the depth direction Y of the battery compartment 1, the guide member 4 is inclined towards the bottom wall of the battery compartment 1.

[0057] Along the depth direction Y of the battery compartment 1, the end of the guide section 42 that is near or away from the door of the battery compartment 1 is inclined towards the side near the bottom wall of the battery compartment 1. The condensate that accumulates at the connection position between the guide section 42 and the connecting section 41 will flow along the guide section 42 towards the side of the guide section 42 that is near or away from the door of the battery compartment 1, and will flow out from the end of the guide section 42 and drip onto the bottom wall of the battery compartment 1, which can reduce the possibility of condensate splashing.

[0058] like Figure 3 As shown, in one possible embodiment, the flow guide 4 is disposed on the side of the mounting bracket 11 near the flow guiding assembly. The connecting portion 41 of the flow guide 4 is disposed on the mounting bracket 11, and the flow guide portion 42 extends towards the side near the battery pack 2.

[0059] One end of the connecting part 41 is connected to the mounting bracket 11 by welding, snap-fit, or other means, and the other end is provided with a guide part 42. The guide part 42 extends along the width direction X of the energy storage device and is closer to the battery pack 2, so that the condensate generated on the battery pack 2 can drip onto the guide part 42. The connecting part 41 extends along the height direction Z of the energy storage device, so that there is a gap between the guide part 42 and the bottom plate of the battery pack 2, which facilitates the guide part 42 to collect the condensate.

[0060] In one possible embodiment, the cross-section of the guide member 4 disposed on the mounting bracket 11 can be an L-shaped structure, with the guide portion 42 and the connecting portion 41 being two sides of the L-shaped structure, so there is an included angle between the guide portion 42 and the connecting portion 41, and the included angle between the guide portion 42 and the connecting portion 41 is greater than 90°.

[0061] The angle between the guide section 42 and the connecting section 41 is greater than 90°. The end of the guide section 42 away from the connecting section 41 is inclined towards the bottom wall of the battery compartment 1, so that the condensate falling on the guide section 42 flows along the inclined direction of the guide section 42 and drips from the end of the guide section 42 away from the connecting section 41 onto the bottom wall of the battery compartment 1.

[0062] In one possible embodiment, in the guide member 4 disposed on the mounting bracket 11, the included angle between the guide portion 42 and the connecting portion 41 is less than 90°, causing the end of the guide portion 42 away from the connecting portion 41 to tilt away from the bottom wall of the battery compartment 1. Along the depth direction Y of the battery compartment 1, the guide portion 42 tilts towards the bottom wall of the battery compartment 1.

[0063] After condensate drips onto the guide section 42, it flows along the inclined direction of the guide section 42 towards the connection point of the guide section 42 and the connection point 41, reducing the possibility of condensate splashing. The guide section 42 extends along the depth direction Y of the battery compartment 1, and its side near or away from the compartment door slopes towards the bottom wall of the battery compartment 1. Condensate flowing to the connection point of the guide section 42 and the connection point 41 can drip from the end of the guide section 42 near or away from the compartment door onto the bottom wall of the battery compartment 1, reducing the possibility of condensate splashing and entering the battery pack 2, causing a short circuit.

[0064] like Figure 4 and Figure 5 As shown, in one possible embodiment, the lead-out component 3 includes a lead-out member 31, which includes an inflow end 311 and an outflow end 312. The inflow end 311 is located on the bottom wall of the battery compartment 1, and the condensate dripping onto the bottom wall of the battery compartment 1 can flow into the lead-out member 31 from the inflow end 311. The outflow end 312 extends out of the battery compartment 1, and the condensate in the lead-out member 31 can flow out from the outflow end 312.

[0065] The outlet 31 is used to drain condensate from the battery compartment 1, reducing the possibility of condensate accumulating in the battery compartment 1. A filter screen can be installed on one side of the inflow end 311 to filter the condensate, reducing the possibility of other debris from the battery compartment 1 falling into the outlet 31 and causing blockage. The outlet end 312 can extend into the high-pressure chamber 6 below the battery compartment 1. A collection tank can be installed in the high-pressure chamber 6. Under the action of gravity, the condensate in the battery compartment 1 can fall into the collection tank through the outlet 31. A one-way valve can also be installed at the outlet end 312. The one-way valve opens when the condensate in the outlet 31 flows in the direction from the inflow end 311 to the outlet end 312, and closes when there is no condensate in the outlet 31, which can reduce the backflow of impurities in the high-pressure chamber 6 into the battery compartment 1. During the charging and discharging process of the battery pack 2 in the battery compartment 1, combustible gases are generated. If the combustible gases enter the high-voltage compartment 6, it may cause safety problems such as the combustible gases being ignited. A one-way valve is installed in the lead-out part 31 to reduce the possibility of combustible gases in the battery compartment 1 entering the high-voltage compartment 6, thereby improving the safety of the energy storage device.

[0066] In one possible embodiment, the lead-out assembly 3 further includes a drain pipe for connecting the outlet end 312 of the lead-out member 31 to the collection tank, thereby draining the condensate in the lead-out member 31 into the collection tank. The collection tank can be located inside or outside the high-pressure chamber 6; the outlet end 312 of the lead-out member 31 can be located inside or outside the high-pressure chamber 6, allowing the condensate in the lead-out member 31 to flow out from the outlet end 312 and into the collection tank via the drain pipe.

[0067] The condensate collection tank is used to collect condensate in the battery compartment 1. A drain pipe is installed between the outlet end 312 of the lead-out member 31 and the condensate collection tank. The condensate flows into the condensate collection tank along the drain pipe, which can reduce the possibility of condensate leakage or splashing. At the same time, the drain pipe can offset the condensate collection tank from the outlet end 312, making it easier to set the position of the condensate collection tank.

[0068] In one possible embodiment, the collection tank includes a first detection element disposed inside the collection tank and capable of contacting the waste liquid inside the collection tank, for detecting whether the waste liquid contains coolant.

[0069] A flow channel is provided at the bottom of battery pack 2, through which coolant flows to dissipate heat from the battery cells inside. Due to welding and other issues, coolant leakage may occur at the bottom of battery pack 2. The leaked coolant will drip down along with condensate, so the waste liquid in the collection tank may contain only condensate or both condensate and coolant. A switch device can also be installed in the collection tank to control whether the waste liquid can be discharged. If the first detection device detects that the waste liquid in the collection tank contains only condensate, the switch device opens, and the collection tank can directly discharge the waste liquid into the external environment without causing environmental damage. If the first detection device detects that the waste liquid in the collection tank contains both condensate and coolant, direct discharge of the waste liquid into the external environment would damage the surrounding environment. In this case, the switch device closes, and personnel need to collect the waste liquid for further treatment.

[0070] In one possible embodiment, the collection tank is further equipped with a diversion device, which includes two diversion pipes, one of which is connected to the external environment and the other is connected to a waste liquid tank. When the first detection element detects that the waste liquid in the collection tank contains only condensate, the diversion pipe connected to the external environment opens, and the diversion pipe connected to the waste liquid tank closes, allowing the condensate in the collection tank to be discharged into the external environment. When the first detection element detects that the waste liquid in the collection tank contains both condensate and coolant, the diversion pipe connected to the external environment closes, and the diversion pipe connected to the waste liquid tank opens, allowing the mixture of condensate and coolant to be discharged into the waste liquid tank, reducing the possibility of coolant pollution to the environment. Then, workers clean the mixture of condensate and coolant from the waste liquid tank.

[0071] like Figure 4 As shown, in one possible embodiment, the lead-out assembly 3 includes a cover plate 32 located on one side of the inflow end 311 of the lead-out member 31 and detachably mounted on the bottom wall of the battery compartment 1. When the cover plate 32 is mounted on the bottom wall of the battery compartment 1, the cover plate 32 can block the inflow end 311 of the lead-out member 31.

[0072] The lead-out component 31 and cover plate 32 in the lead-out assembly 3 can be positioned on the side of the battery compartment 1 near the door, facilitating the installation and removal of the cover plate 32. A fixing plate 7 is also provided on the bottom wall of the battery compartment 1. One end of the fixing plate 7 can be connected to the bottom wall of the battery compartment 1, while the other end protrudes away from the bottom wall of the battery compartment 1. When the cover plate 32 is installed on the bottom wall of the battery compartment 1, the cover plate 32 is inserted between the fixing plate 7 and the bottom wall of the battery compartment 1. The fixing plate 7 can restrict the relative position between the cover plate 32 and the bottom wall, and also press the cover plate 32 firmly, reducing the possibility of condensate flowing into the lead-out component 31. A through hole is provided at the end of the cover plate 32 away from the fixing plate 7, allowing the cover plate 32 to be connected to the bottom wall of the battery compartment 1 with screws to lock the cover plate 32 and reduce the possibility of displacement of the cover plate 32.

[0073] When the outlet end 312 of the lead-out member 31 extends into the high-voltage chamber 6 and is not connected to the liquid collection tank, the cover plate 32 can block the inflow end 311 of the lead-out member 31, reducing the possibility of condensate in the battery compartment 1 flowing into the high-voltage chamber 6 through the lead-out member 31, causing a short circuit in the equipment in the high-voltage chamber 6. When the condensate in the high-voltage chamber 6 reaches a preset amount, the operator can place a liquid collection device at the outlet end of the lead-out member 31 to collect the condensate in the battery compartment 1, and then remove the cover plate 32, allowing the condensate in the battery compartment 1 to flow into the liquid collection device through the lead-out member 31. During the charging and discharging process of the battery pack 2 in the battery compartment 1, flammable gases are generated. If flammable gases enter the high-voltage chamber 6, it may cause safety problems such as ignition of flammable gases. The cover plate 32 can also reduce the possibility of flammable gases generated in the battery compartment 1 flowing into the high-voltage chamber 6, thereby improving the safety of the energy storage device.

[0074] like Figure 4 As shown, in one possible embodiment, a second detection element 5 is further provided inside the battery compartment 1. The second detection element 5 is disposed on the bottom wall of the battery compartment 1 and located near the outlet 31, for detecting the water level of the condensate at the outlet 31. The second detection element 5 includes a probe, and the distance between the probe and the bottom wall of the battery compartment 1 along the height direction Z of the energy storage device is 8mm to 10mm.

[0075] Positioning the second detection element 5 on the bottom wall of the battery compartment 1 near the lead-out element 31 improves the accuracy of its measurement of the condensate level within the battery compartment 1. In the second detection element 5, a probe detects the condensate level in the battery compartment 1. When condensate in the battery compartment 1 touches the probe, the second detection element 5 sends a signal, prompting personnel to drain the condensate. If the distance between the probe and the bottom wall of the battery compartment 1 is less than 8mm, the second detection element 5 will send a signal when the condensate level is low, causing personnel to frequently drain the condensate, increasing the maintenance cost of the energy storage device. If the distance between the probe and the bottom wall of the battery compartment 1 is greater than 10mm, the condensate level in the battery compartment 1 will be high, potentially causing equipment inside the battery compartment 1 to come into contact with the condensate, resulting in a short circuit. Therefore, the distance between the probe and the bottom wall of the battery compartment 1 can be 8mm, 9mm, 10mm, etc., which reduces the possibility of condensate affecting the equipment inside the battery compartment 1 and lowers the maintenance cost of the energy storage device.

[0076] like Figure 4 As shown, in one possible embodiment, at least two flow guiding slopes 12 are provided on the bottom wall of the battery compartment 1. Along the height direction Z of the energy storage device, the lowest point of the at least two flow guiding slopes 12 is connected to the lead-out component 3, and the other positions are connected to the side wall of the battery compartment 1.

[0077] The condensate generated by the battery pack 2 drips onto the guide slope 12 under the action of the guide member 4. The lowest point of the guide slope 12 is connected to the guide assembly, so that the condensate dripping onto the guide slope 12 flows into the guide assembly, reducing the possibility of condensate remaining in the battery compartment 1. Other positions of the guide slope 12 are connected to the side wall of the battery compartment 1, and a seal is provided between the guide slope 12 and the side wall of the battery compartment 1, so that the condensate dripping along the side wall of the battery compartment 1 can also flow along the guide slope 12 to the outlet assembly 3. This reduces the possibility of condensate remaining between the guide slope 12 and the bottom plate of the battery compartment 1, and also reduces the possibility of condensate leaking from the guide slope and the side wall of the battery compartment 1 into the gap between the guide slope 12 and the bottom wall of the battery compartment 1.

[0078] At least two flow guide slopes 12 are arranged around the flow guide component, and the inclination directions of the at least two flow guide slopes 12 are different, and there is an angle between adjacent flow guide slopes 12, so that the condensate dripping onto the flow guide slopes 12 from different positions can flow to the outlet component 3, reducing the possibility of condensate remaining in the battery compartment 1.

[0079] At least two flow guide slopes 12 can be interlocked with each other, and a seal is required at the interlocking point of adjacent flow guide slopes 12 to reduce the possibility of condensate leakage between the flow guide slope 12 and the bottom wall of the battery compartment 1.

[0080] At least two guide slopes 12 can also be integrally formed from a single sheet of material, which can reduce the possibility of gaps between adjacent guide surfaces, thereby reducing the possibility of condensate leakage. At the same time, it can also reduce the processing and installation difficulty of at least two guide slopes 12, which is conducive to reducing the production cost of energy storage devices.

[0081] In one possible embodiment, the inclination angle of the guide ramp 12 is 0.4° to 0.8°.

[0082] Condensate flows along the guide slope 12 to the lead-out component 3. If the inclination angle of the guide slope 12 is less than 0.4°, the condensate may not be able to flow to the lead-out component 3 under the influence of gravity, increasing the possibility of condensate residue remaining in the battery compartment 1. If the inclination angle of the guide slope 12 is greater than 0.8°, the height difference between the highest and lowest positions is large, reducing the space that the battery compartment 1 can hold for condensate. This necessitates frequent cleaning of the condensate in the battery compartment 1, increasing the maintenance cost of the energy storage device. Furthermore, the highest position of the guide slope 12 may interfere with other equipment within the battery compartment 1. Therefore, the inclination angle of the guide slope 12 can be 0.4°, 0.6°, 0.8°, etc., allowing the condensate to flow along the guide slope 12 to the lead-out component 3.

[0083] This application relates to an energy storage device, which includes a battery compartment 1 and a flow guiding system. The battery compartment 1 houses a battery pack 2. During operation, the battery pack 2 generates waste liquid. The flow guiding system is used to drain the waste liquid from the battery compartment 1, reducing the possibility of the waste liquid submerging the battery pack 2 and also reducing the humidity inside the battery compartment 1. The flow guiding system includes an outlet component 3 and a flow guiding component. The outlet component 3 is disposed on the bottom wall of the battery compartment 1, and its end extends out of the battery compartment 1, enabling it to drain the waste liquid from the battery compartment 1. A flow guiding component 4 is disposed on the side of the battery pack 2 near the outlet component 3, used to guide the waste liquid to the outlet component 3. Under the action of gravity, the waste liquid generated by the battery pack 2 drips onto the flow guiding component 4 and then flows through the flow guiding component 4 to the outlet component 3, reducing the possibility of waste liquid splashing.

[0084] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An energy storage device, characterized in that, The energy storage device includes: Battery compartment (1), the battery compartment (1) is used to hold battery pack (2); A diversion system is provided in the battery compartment (1) for draining the waste liquid generated by the battery pack (2) out of the battery compartment (1); The flow guiding system includes an outlet component (3) and a flow guide (4). The outlet component (3) is disposed on the bottom wall of the battery compartment (1) and located near the door of the battery compartment (1). The end of the outlet component (3) extends out of the battery compartment (1) to outlet the waste liquid. The flow guide (4) is disposed on the side of the battery pack (2) near the outlet component (3) to guide the waste liquid to the outlet component (3). The battery compartment (1) is provided with a mounting bracket (11), and the mounting bracket (11) is inserted into both sides of the bottom plate of the battery pack (2). The bottom plate of the battery pack (2) has condensation at the contact point with the mounting bracket (11). Along the width direction of the energy storage device, the guide member (4) is provided on both sides of the battery pack (2). The guide member (4) includes a connecting part (41) and a guide part (42). The connecting part (41) is located on the side of the mounting bracket (11) close to the lead-out component (3). The guide part (42) is located on the side of the connecting part (41) away from the battery pack (2) and extends along the width direction of the energy storage device to the position below the bottom plate of the battery pack (2) that contacts the mounting bracket (11). The included angle between the guide part (42) and the connecting part (41) is less than 90°, and the cross section at the connection between the guide part (42) and the connecting part (41) is arc-shaped. Along the depth direction of the battery compartment (1), the end of the guide section (42) near the door of the battery compartment (1) is inclined toward the bottom wall of the battery compartment (1).

2. The energy storage device according to claim 1, characterized in that, The lead-out assembly (3) includes a lead-out member (31), the inflow end (311) of which is located on the bottom wall of the battery compartment (1), and the outflow end (312) which extends out of the battery compartment (1).

3. The energy storage device according to claim 2, characterized in that, The outlet assembly (3) also includes a drainage tube, one end of which is connected to the outlet end (312) of the outlet member (31), and the other end is connected to the collection tank.

4. The energy storage device according to claim 3, characterized in that, The collection tank includes a first detection element for detecting whether coolant is present in the waste liquid within the collection tank.

5. The energy storage device according to claim 2, characterized in that, The lead-out assembly (3) includes a cover plate (32), which is detachably installed on the bottom wall of the battery compartment (1) to block the inflow end (311) of the lead-out member (31).

6. The energy storage device according to claim 1, characterized in that, The battery compartment (1) is also provided with a second detection element (5), which is located on the side close to the lead-out component (3). The second detection element (5) includes a probe, and the distance between the probe and the bottom wall of the battery compartment (1) along the height direction of the energy storage device is 8mm to 10mm.

7. The energy storage device according to claim 1, characterized in that, The bottom wall of the battery compartment (1) is provided with at least two flow guiding slopes (12), and the lowest point of the flow guiding slopes (12) is connected to the lead-out component (3) along the height direction of the energy storage device; the inclination angle of the flow guiding slopes (12) is 0.4° to 0.8°.

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