Battery compartment and battery assembly

Abstract

The utility model discloses a battery compartment and a battery assembly, which are mainly characterized in that a fluid assembly is communicated with fluid supply equipment and an accommodating space, so that fluid can be supplied to the accommodating space according to the temperature of energy storage equipment in the accommodating space or the environment temperature; cooling and fire prevention can be carried out on the energy storage equipment in a spraying or soaking mode. According to the main technical scheme, the battery compartment comprises a main body, an inner cavity is formed in the main body, and the inner cavity is used for containing an energy storage element; the first end of the fluid assembly is located in the inner cavity, and the second end of the fluid assembly is used for being connected with fluid supply equipment. The fireproof door is mainly used for fire prevention of energy storage equipment.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage fire fighting, in particular to a battery compartment and a battery assembly. Background Art

[0002] In recent years, energy storage power stations have played an increasingly important role in responding to emergencies such as power outages, or in fields such as wind power and hydropower generation. Energy storage power stations are composed of multiple battery clusters, which are also called battery packs. They are energy storage batteries connected in series, parallel, or series-parallel, and are set in battery compartments to achieve independent operation.

[0003] Since the battery cluster is prone to high temperature when working, the existing battery compartment is usually equipped with a fire protection system to ensure the fire safety of the battery cluster. The existing fire protection system uses a perfluorohexanone fire extinguishing device. When the fire detection device detects a fire, the perfluorohexanone fire extinguishing device is triggered to spray perfluorohexanone. However, the fire extinguishing effect of perfluorohexanone is general. After the energy storage battery thermal runaway occurs, it can only prevent the thermal runaway from spreading further, and cannot fully suppress and destroy the thermal runaway of the energy storage battery. The battery cluster still has a continuous high temperature, which may cause a safety hazard of fire. Utility Model Content

[0004] In view of this, in order to solve at least one of the above technical problems, the utility model provides a battery compartment and a battery assembly.

[0005] In order to achieve the above purpose, the utility model mainly provides the following technical solutions:

[0006] In one aspect, the utility model provides a battery compartment, comprising:

[0007] A main body (100), wherein an inner cavity (101) is formed on the main body (100), and the inner cavity (101) is used to accommodate the energy storage element (10);

[0008] A fluid component (200), wherein a first end of the fluid component (200) is located in the inner cavity (101), and a second end of the fluid component (200) is used to connect to a fluid supply device.

[0009] Wherein, the inner cavity (101) is a sealed space.

[0010] Wherein, the wall thickness of at least part of the side wall of the main body (100) is greater than or equal to 20 mm and less than or equal to 50 mm.

[0011] The main body (100) comprises a surrounding plate (110) and at least one door plate (120), the surrounding plate (110) is provided with at least one opening, and the door plate (120) is movably connected to the surrounding plate (110) to cover or open the opening.

[0012] Wherein, the main body (100) further includes a sealing member (130);

[0013] The sealing member (130) is connected to the enclosure plate (110), and the sealing member (130) abuts against the door plate (120) to seal the connection position between the enclosure plate (110) and the door plate (120);

[0014] And / or, the sealing member (130) is connected to the door panel (120), and the sealing member (130) abuts against the enclosure panel (110) to seal the connection position between the enclosure panel (110) and the door panel (120).

[0015] And / or, the sealing member (130) is made of a flexible flame-retardant material;

[0016] And / or, the main body (100) further comprises a sealing plate, the sealing plate is connected to at least one of the enclosure plate (110) and the door plate (120), and the sealing member (130) is arranged on the sealing plate.

[0017] The fluid component (200) comprises a liquid supply pipeline (210) and a spraying member (220), the liquid supply pipeline (210) comprises a first end and a second end, a flow channel is provided on the liquid supply pipeline (210), and the flow channel runs through the first end of the liquid supply pipeline (210) and the second end of the liquid supply pipeline (210);

[0018] The first end of the liquid supply pipeline (210) and the spraying member (220) are both located in the inner cavity (101), the spraying member (220) is connected to the liquid supply pipeline (210), and the second end of the liquid supply pipeline (210) is used to connect to a fluid supply device;

[0019] The spraying member (220) is used to open the liquid supply pipeline (210) when the temperature or pressure of the inner cavity (101) is greater than a preset value.

[0020] The ejection member (220) is a fire detection tube, which is connected to the liquid supply pipeline (210).

[0021] The ejection member (220) is located at the top of the inner cavity (101).

[0022] The battery compartment further comprises: a liquid level detection component, which is located in the inner cavity (101) and is used to detect the liquid level height of the fluid in the inner cavity (101);

[0023] And / or, a water drain port (102) is provided on the main body (100), and the water drain port (102) is connected to the inner cavity (101) and the outside of the main body (100).

[0024] On the other hand, the utility model also provides a battery assembly, including any of the battery compartments described above.

[0025] The battery compartment and battery assembly proposed in the utility model, by providing a fluid assembly to connect the fluid supply device and the accommodating space, can provide fluid to the accommodating space according to the temperature of the energy storage device in the accommodating space or the ambient temperature, so as to cool down and prevent fire of the energy storage device by fluid spraying or immersion. The battery compartment and battery assembly can be used alone or in conjunction with a perfluorohexanone fire extinguishing device to ensure the safety of thermal runaway energy storage devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic cross-sectional view of a battery compartment provided in an embodiment of the utility model;

[0027] Figure 2 A schematic cross-sectional view of another battery compartment provided in an embodiment of the utility model. DETAILED DESCRIPTION

[0028] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the present invention, the specific implementation method, structure, characteristics and effects of a battery compartment proposed according to the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0029] like Figure 1 As shown, an embodiment of the utility model provides a battery compartment, comprising:

[0030] A main body (100), wherein an inner cavity (101) is formed on the main body (100), and the inner cavity (101) is used to accommodate the energy storage element (10);

[0031] A fluid component (200), wherein a first end of the fluid component (200) is located in the inner cavity (101), and a second end of the fluid component (200) is used to connect to a fluid supply device.

[0032] The main body (100) is the main support structure of the battery compartment, and the inner cavity (101) is the space on the main body (100) for accommodating the energy storage element (10), and the inner cavity (101) makes the main body (100) a cavity structure. The shape of the main body (100) can be various, such as the outer contour of the main body (100) can be an approximate cube, cylinder or irregular shape, which can be set according to the structure and arrangement position of the energy storage element (10). The energy storage element (10) can be of various types, such as a battery, a capacitor energy storage element or a superconducting energy storage element. Taking the battery as an example, the battery may heat up during the charging and discharging process. The heating of the battery during discharge may be due to excessive discharge and large current. Battery aging, increased internal resistance, and drying of the electrolyte may all cause the battery to heat up during charging.

[0033] The fluid component (200) is used to provide fluid to the inner cavity (101), and the method of providing the fluid may be spraying, or simply filling the inner cavity (101) with the fluid. The fluid may be any fluid that can extinguish fire and reduce temperature, such as water, or a water-based fluid, such as water with components such as flame retardants and stabilizers, or other liquids that can be flame retardant. The fluid component (200) is connected to the inner cavity (101) and is connected to a fluid supply device, and the fluid supply device can actively supply the fluid, such as the fluid supply device can be a fire hydrant. Alternatively, the fluid supply device can have a more complex structure, such as the fluid supply device includes a fluid storage box, a pump and a valve, the fluid storage box stores fluid, the fluid component (200) is connected to the fluid storage box, and the valve can be an automatic or manual valve. When the valve is opened, the pump can drive the fluid in the fluid storage box to be released into the inner cavity (101) through the fluid component (200). The fluid supply device can be located outside the inner cavity (101) to avoid occupying the position of the inner cavity (101), and the fluid component (200) is connected to the side wall of the main body (100) so that the second end of the fluid component (200) is led out of the main body (100) and then connected to the fluid supply device.

[0034] The battery compartment can only use the fluid component (200) to provide fluid for cooling and fire extinguishing, or it can be used in conjunction with a perfluorohexanone fire extinguishing device for cooling and fire extinguishing. In one embodiment, the inner cavity (101) is also provided with a perfluorohexanone fire extinguishing device and a temperature sensor. When the temperature sensor detects that the temperature is greater than the first preset value, a first signal is sent to the main controller, and then the perfluorohexanone fire extinguishing device is first started to spray perfluorohexanone for fire extinguishing. If the temperature cannot be controlled, that is, when the temperature continues to rise, it can be that the high temperature triggers the change in the morphology of the fluid component (200), or the high temperature destroys part of the surface structure of the fluid component (200), and then the pressurized fluid in the fluid component (200) is ejected, and the fire is extinguished by fluid spraying or infiltration. It can also be that when the temperature sensor detects that the temperature is greater than the second preset value, a second signal is sent to the main controller, and then the valve and pump as in the aforementioned embodiment are started, and then the fluid is sprayed. The embodiment of high temperature destroying part of the surface structure of the fluid component (200) will be described in detail below.

[0035] The battery compartment and battery assembly proposed in the embodiment of the utility model, by providing a fluid component to connect the fluid supply device and the accommodating space, can provide fluid to the accommodating space according to the temperature of the energy storage device in the accommodating space or the ambient temperature, so as to cool down and prevent fire of the energy storage device by fluid spraying or immersion, and can then be used alone or together with a perfluorohexanone fire extinguishing device to ensure the safety of thermal runaway energy storage equipment.

[0036] In one embodiment, the inner cavity (101) is a sealed space. The sealed space can achieve fluid immersion in the battery, and then the location of the fluid component (200) and the location of the fluid spraying are not limited, and the battery can be cooled and extinguished in all directions, avoiding the problem of incomplete fire extinguishing caused by less or no contact with the fluid in some battery areas due to the spraying of fluid. In addition, the immersion method can prevent the re-ignition of the fire point, thereby more reliably extinguishing the fire. It is worth noting that Figure 1 Shown is a cross-sectional view, the inner cavity (101) has a top wall, which is not shown in the figure.

[0037] In one embodiment, the wall thickness of at least part of the side wall of the main body (100) is greater than or equal to 20 mm and less than or equal to 50 mm. The thickness of the side wall of the existing battery compartment is generally between 10 mm and 25 mm, and the specific thickness is related to the size and material of the battery compartment. In this embodiment, the thickness of the side wall of the main body (100) is thickened to ensure that when the inner cavity (101) of the battery compartment has a high temperature, the heat is not easy to spread and cause the battery thermal runaway of the adjacent battery compartment, and then the runaway point is controlled within a certain range to avoid spreading. All side walls of the main body (100) can be thickened, such as the thickness of all side walls of the main body (100) is consistent, all of which are 30 mm. It can also be that only the side walls of other adjacent electromagnetic compartments are thickened, such as multiple electromagnetic compartments are arranged in a preset direction, and the thickness of the side walls of the main body (100) on both sides in the preset direction is thickened, such as 30 mm, and the thickness of the other side walls can be 15 mm, which can ensure that the heat transfer of the adjacent battery compartment is reduced on the one hand, and on the other hand, the weight of the electromagnetic compartment can be reduced, and the material, production cost and space occupation can be reduced.

[0038] In one embodiment, the main body (100) includes a surrounding panel (110) and at least one door panel (120), the surrounding panel (110) is provided with at least one opening, and the door panel (120) is movably connected to the surrounding panel (110) to cover or open the opening.

[0039] The enclosure (110) encloses the main support structure of the main body (100), that is, the main shape of the main body (100). If the main body (100) is a nearly cubic structure, the door panel (120) and the opening are both single, and the enclosure (110) may include a top panel, a bottom panel and three side panels, the top panel and the bottom panel are relatively parallel, the three side panels are connected in sequence, and form a U-shaped shape when viewed from above, and are connected between the top panel and the bottom panel, and the top panel, the bottom panel and the three side panels can be integrally formed, welded, etc. The three side panels and the top panel and the bottom panel together enclose a receiving space and an opening, and the opening is connected to the receiving space. The movable connection between the door panel (120) and the enclosure (110) can be a movable connection with any one or more of the top panel, the bottom panel and the three side panels. The movable connection can be any one of a sliding connection, a hinged connection, a rotating connection or a plug-in connection, so that the door panel (120) can move relative to the enclosure (110) under the action of an external force, so as to selectively cover or open the opening. When the door panel (120) covers the opening, the door panel (120) blocks the accommodation space, and then the door panel (120) and the enclosure panel (110) cooperate to form the inner cavity (101). The door panel (120) can be opened and closed, so as to facilitate the picking up and installation of the storage battery and the inspection and maintenance of other components in the inner cavity (101).

[0040] In one embodiment, the main body (100) further comprises a sealing member (130). The sealing member (130) is connected to the enclosure (110), and the sealing member (130) abuts against the door panel (120) to seal the connection position between the enclosure (110) and the door panel (120). And / or, the sealing member (130) is connected to the door panel (120), and the sealing member (130) abuts against the enclosure (110) to seal the connection position between the enclosure (110) and the door panel (120).

[0041] The seal (130) is used to seal the gap at the connection position between the enclosure (110) and the door panel (120), so that when the door panel (120) is closed, the inner cavity (101) can be a closed inner cavity, and then the many advantages of the inner cavity (101) being a closed space can be achieved, which will not be repeated here. The seal (130) can be set at multiple positions, but it should be ensured to surround the door panel (120) for a week, so as to ensure the sealing of all sides of the door panel (120). The seal (130) is made of a flexible material. For example, the seal (130) can be a composite rubber strip, a silicone rubber strip or other soft flame-retardant materials. The seal (130) can be fixedly connected to the four edges of the door panel (120), such as by bonding or ultrasonic connection. The sealing member (130) moves simultaneously with the door panel (120), and when the door panel (120) covers the opening, the sealing member (130) abuts against the enclosure (110), thereby achieving sealing. Alternatively, the sealing member (130) may be connected to the enclosure (110). Alternatively, both the enclosure (110) and the door panel (120) may be provided with sealing members (130), and when the door panel (120) covers the opening, the sealing members (130) on both sides abut against each other, thereby achieving sealing.

[0042] In one embodiment, the main body (100) further comprises a sealing plate, the sealing plate is connected to at least one of the enclosure plate (110) and the door plate (120), and the sealing member (130) is disposed on the sealing plate.

[0043] The sealing plate can play a role in supporting and connecting the sealing member (130), so that the position of the sealing member (130) can be more stable and the sealing effect of the sealing member (130) can be better. For example, the sealing plate can be connected to the enclosure (110) or formed in one piece, the sealing plate extends toward the center of the opening, and is arranged parallel to and spaced apart from the door panel (120) when the door panel (120) is closed, and the sealing member (130) is arranged on the side of the sealing plate opposite to the door panel (120), and then when the door panel (120) covers the opening, the door panel (120) and the sealing member (130) jointly clamp the sealing member (130) to achieve sealing.

[0044] In one embodiment, the fluid component (200) includes a liquid supply pipeline (210) and a spraying member (220), wherein the liquid supply pipeline (210) includes a first end and a second end, and a flow channel is provided on the liquid supply pipeline (210), wherein the flow channel passes through the first end of the liquid supply pipeline (210) and the second end of the liquid supply pipeline (210). The first end of the liquid supply pipeline (210) and the spraying member (220) are both located in the inner cavity (101), the spraying member (220) is connected to the liquid supply pipeline (210), and the second end of the liquid supply pipeline (210) is used to connect to a fluid supply device. The spraying member (220) is used to conduct the liquid supply pipeline (210) when the temperature or pressure of the inner cavity (101) is greater than a preset value.

[0045] The flow channel passes through the first end of the liquid supply pipeline (210) and the second end of the liquid supply pipeline (210), thereby forming an opening at the first end and an opening at the second end. The opening at the first end is used for fluid outflow, and the opening at the second end is used for fluid inflow. The ejection member (220) may be an automatic control member, such as a solenoid valve. The solenoid valve is connected to the liquid supply pipeline (210). When there is no thermal runaway phenomenon, the solenoid valve shuts off the flow channel, the liquid supply pipeline (210) is not conductive, and the fluid cannot be discharged into the inner cavity (101). When the temperature sensor detects that the temperature of the inner cavity (101) is greater than a second preset value, the solenoid valve is controlled to open, the solenoid valve conducts the liquid supply pipeline (210), and then the fluid is ejected. Alternatively, the ejection member (220) is a fire detection tube, which is connected to the liquid supply pipeline (210), or in other words, the fire detection tube is connected to the liquid supply pipeline (210), and the inner hole of the fire detection tube is connected to the flow channel. The fire detection tube will soften and burst at the highest heated point, releasing the fluid in the flow channel into the inner cavity (101) through the inner hole of the fire detection tube itself, thereby achieving the automatic bursting and fluid supply when the temperature reaches a certain value without the need for temperature detection and feedback, thereby avoiding the problem of sensor and control failure under high temperature. The connection between the fire detection tube and the liquid supply pipeline (210) can be plug-in or connected through a connector such as a tee.

[0046] In one embodiment, the ejection member (220) is located at the top of the inner cavity (101). In an embodiment where the ejection member (220) is a fire detection tube, the fire detection tube is arranged at the top of the inner cavity (101), or the fire detection tube is arranged above the battery, and can be arranged in a horizontal direction. Alternatively, in some embodiments, there are multiple fire detection tubes, the multiple fire detection tubes are interconnected, and are arranged crisscrossed above the battery. Alternatively, in some embodiments, there are multiple fire detection tubes, the multiple fire detection tubes are all connected to the liquid supply pipe (210), and are distributed in parallel at intervals above the battery. The high temperature of high-temperature gas or flame will show a tendency to spread from bottom to top. The fire detection tube is located at the top of the inner cavity (101), and can generate a response when high heat is generated at any position of the battery, avoiding the problem that the high fire point cannot melt the fire detection tube due to the low position of the fire detection tube.

[0047] In some embodiments, the liquid supply pipe (210) can be arranged in a vertical direction in the inner cavity (101), one end of which is connected to the fire detection tube, and the liquid supply pipe (210) is connected to the bottom plate at the bottom end of the inner cavity (101), and then the second end of the liquid supply pipe (210) is led out of the main body (100) and then connected to the fluid supply equipment.

[0048] Since the inner cavity (101) is a closed space, when the fluid is injected into the inner cavity (101) to a certain height, such as when it is close to being filled, it is necessary to stop the injection of the fluid or drain the excess liquid to prevent the electromagnetic compartment from bursting under pressure. In one embodiment, the battery compartment also includes: a liquid level detection component, which is located in the inner cavity (101) and is used to detect the liquid level height of the fluid in the inner cavity (101). The liquid level detection component can be a contact detection, such as a probe detection, or a non-contact detection, such as an infrared probe. When it is detected that the liquid level reaches a preset height, a control signal can be sent to the main controller. In an embodiment where the ejection component (220) is a fire detection tube, the fluid supply device can be controlled to shut off the water supply, such as closing the valve of the fire hydrant. Alternatively, in an embodiment where the ejection component (220) is an electromagnetic valve on a liquid supply pipeline (210), the electromagnetic valve can be directly controlled to close.

[0049] In some other implementations, such as Figure 2 As shown, a water drain port (102) may be provided on the main body (100), and the water drain port (102) is connected to the inner cavity (101) and the outside of the main body (100).

[0050] In this embodiment, the inner cavity (101) is a sealed space, which can be interpreted as the inner cavity (101) is connected to the outside world only through or only through the drain port (102), and the other side walls of the inner cavity (101) are closed. The number of drain ports (102) can be multiple, and the height can be higher than the height of the top surface of the battery. When the fluid injected into the inner cavity (101) is higher than the drain port (102), the fluid will be discharged through the drain port (102) to avoid excessive fluid in the inner cavity (101). In some embodiments, a collection component (300) can be connected outside the main body (100) to collect the fluid discharged from the drain port (102). For example, the collecting assembly (300) includes a collecting tank (310) and an outlet pipe (320) connected to the collecting tank (310). The collecting tank (310) is connected to the main body (100) and is located below the drain port (102). The fluid discharged from the drain port (102) enters the collecting tank (310) and is then discharged from the outlet pipe (320).

[0051] On the other hand, the utility model further provides a battery assembly, comprising any of the battery compartments described above, and an energy storage element (10), wherein the energy storage element (10) is located in the inner cavity (101). The battery assembly comprises any of the battery compartments described above, and the advantages of any of the battery compartments described above are not described in detail here.

[0052] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A battery compartment, characterized in that: include: A main body (100), wherein an inner cavity (101) is formed on the main body (100), and the inner cavity (101) is used to accommodate an energy storage element (10); a fluid component (200), wherein a first end of the fluid component (200) is located in the inner cavity (101), a second end of the fluid component (200) is used to connect to a fluid supply device, and the fluid component (200) is used to provide fluid to the inner cavity (101); The fluid component (200) comprises a liquid supply pipeline (210) and a spraying member (220), and the spraying member (220) is an automatic control member or a fire detection tube.

2. The battery compartment according to claim 1, characterized in that: The inner cavity (101) is a sealed space.

3. The battery compartment according to claim 1, characterized in that: The wall thickness of at least part of the side wall of the main body (100) is greater than or equal to 20 mm and less than or equal to 50 mm.

4. The battery compartment according to claim 1, characterized in that: The main body (100) comprises a surrounding plate (110) and at least one door plate (120), the surrounding plate (110) is provided with at least one opening, and the door plate (120) is movably connected to the surrounding plate (110) to cover or open the opening.

5. The battery compartment according to claim 4, characterized in that: The main body (100) further comprises a sealing member (130); The sealing member (130) is connected to the enclosure plate (110), and the sealing member (130) abuts against the door plate (120) to seal the connection position between the enclosure plate (110) and the door plate (120); And / or, the sealing member (130) is connected to the door panel (120), and the sealing member (130) abuts against the enclosure panel (110) to seal the connection position between the enclosure panel (110) and the door panel (120); And / or, the sealing member (130) is made of a flexible flame-retardant material; And / or, the main body (100) further comprises a sealing plate, the sealing plate being connected to at least one of the enclosure plate (110) and the door plate (120), and the sealing member (130) being arranged on the sealing plate.

6. The battery compartment according to claim 1, characterized in that: The liquid supply pipeline (210) comprises a first end and a second end, and a flow channel is provided on the liquid supply pipeline (210), wherein the flow channel runs through the first end of the liquid supply pipeline (210) and the second end of the liquid supply pipeline (210); The first end of the liquid supply pipeline (210) and the spraying member (220) are both located in the inner cavity (101), the spraying member (220) is connected to the liquid supply pipeline (210), and the second end of the liquid supply pipeline (210) is used to connect to the fluid supply device; The spraying member (220) is used to open the liquid supply pipeline (210) when the temperature or pressure of the inner cavity (101) is greater than a preset value.

7. The battery compartment according to claim 6, characterized in that: The ejection member (220) is a fire detection tube, and the fire detection tube is connected to the liquid supply pipeline (210).

8. The battery compartment according to claim 6, characterized in that: The ejection member (220) is located at the top end of the inner cavity (101).

9. The battery compartment according to claim 1, characterized in that: The battery compartment further comprises: a liquid level detection component, the liquid level detection component being located in the inner cavity (101) and being used to detect the liquid level height of the fluid in the inner cavity (101); And / or, a water drain port (102) is provided on the main body (100), and the water drain port (102) is connected to the inner cavity (101) and the outside of the main body (100).

10. A battery assembly, characterized in that: A battery compartment comprising any one of claims 1 to 9.

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