Battery device and electric device

Abstract

The utility model discloses a kind of battery device and electric device, battery device includes: battery box, battery module and fire detector, accommodating cavity is formed in battery box, battery box is equipped with the installation port being communicated with accommodating cavity, battery module is accommodated in accommodating cavity, fire detector is installed at installation port and includes fire detector and state indicator, fire detector is located in accommodating cavity, state indicator is located outside battery box. According to the battery device of the utility model, the thermal runaway phenomenon of battery module can be found in time, fire detector is installed at installation port, the replacement and maintenance difficulty of fire detector can be reduced, by setting state indicator outside battery box, state indicator can be more intuitively displayed, so that operating personnel can more intuitively and accurately obtain the state of battery module, it is convenient to take corresponding safety measures in time after thermal runaway of battery module, and then the safety of battery device can be improved.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a battery device and an electrical device. Background Technology

[0002] During the use of energy storage batteries, if thermal runaway occurs due to internal aging or external impact, flammable gases such as hydrogen and carbon monoxide will be produced, which can easily cause fires or even explosions, resulting in significant losses to social production and personal safety. Therefore, how to detect and control battery thermal runaway in a timely manner has become an urgent problem to be solved. Utility Model Content

[0003] The first aspect of this utility model proposes a battery device that can detect thermal runaway of the battery module in a timely manner through a fire detector. Furthermore, the fire detector is easy to replace and maintain, and the status indicator light can display the status more intuitively.

[0004] A battery device according to a first aspect of the present invention includes: a battery housing with a receiving cavity formed therein, and an installation port communicating with the receiving cavity; a battery module housed in the receiving cavity; and a fire detector installed at the installation port and including a fire probe and a status indicator light, wherein the fire probe is located inside the receiving cavity and the status indicator light is located outside the battery housing.

[0005] According to the battery device of the first aspect of the present invention, the fire detector can detect the thermal runaway phenomenon of the battery module in a timely manner. The fire detector is installed at the installation port, which can reduce the difficulty of replacing and maintaining the fire detector. By placing the status indicator light outside the battery box, the status indicator light can be displayed more intuitively, so that the operator can obtain the status of the battery module more intuitively and accurately, which facilitates the timely implementation of corresponding safety measures after the battery module experiences thermal runaway, thereby improving the safety of the battery device.

[0006] According to some embodiments of the present invention, the mounting opening is formed on the outer peripheral sidewall of the battery box, and the distance between the mounting opening and the top wall of the battery box is less than the distance between the mounting opening and the bottom wall of the battery box.

[0007] According to some embodiments of this utility model, the fire detector is detachably connected to the battery box.

[0008] According to some embodiments of the present invention, a sealing ring is provided between the fire detector and the battery box, and the sealing ring is arranged around the mounting opening.

[0009] According to some embodiments of the present invention, the fire detector includes a fire sprinkler head, which is located inside the receiving cavity and is used to connect to an external fire extinguisher. The fire sprinkler head is used to deliver extinguishing agent into the receiving cavity.

[0010] According to some embodiments of the present invention, the battery box is provided with an exhaust port communicating with the receiving cavity, and a pressure relief valve is provided in the exhaust port. The exhaust port and the mounting port are located on the same side of the battery box.

[0011] According to some embodiments of this utility model, the distance between the mounting port and the exhaust port is in the range of 2.5cm to 7.5cm; and / or, the mounting port and the exhaust port are located at the same height.

[0012] According to some embodiments of the present invention, the battery box is provided with high and low pressure connectors, the fire detector, the pressure relief valve and the high and low pressure connectors are arranged at intervals along the circumference of the battery box, and the fire detector is located on the side of the pressure relief valve away from the high and low pressure connectors.

[0013] According to some embodiments of the present invention, the battery box includes a box body and a maintenance panel. A maintenance port is formed on the box body. The maintenance panel is detachably disposed on the box body to open or close the maintenance port. The mounting port is formed on the maintenance panel.

[0014] According to some embodiments of the present invention, the battery module is provided with a fuse, and the maintenance port is disposed opposite to the fuse; and / or, the main body of the box includes a first side wall, the maintenance port is disposed on the first side wall, and the area ratio of the maintenance port to the first side wall is in the range of 60% to 80%.

[0015] According to some embodiments of the present invention, the battery box has an outwardly protruding bulge, the bulge has a clearance groove that opens toward the battery module, the mounting port is formed on the bottom wall of the clearance groove, and the fire detector is located in the clearance groove.

[0016] According to some embodiments of the present invention, the battery box includes a box body and a maintenance panel. A maintenance opening is formed on the box body. The maintenance panel is detachably disposed on the box body to open or close the maintenance opening. The mounting opening is formed on the maintenance panel. The maintenance panel includes a protrusion and a connecting flange. The connecting flange is disposed on the outer peripheral edge of the open opening of the clearance groove and connected to the box body. The distance between the fire detector and the battery module is not less than the distance between the connecting flange and the battery module.

[0017] The second aspect of this utility model proposes an electrical device.

[0018] The electrical device according to a second aspect of the present invention includes: the battery device described above.

[0019] According to the second aspect of the present invention, the fire detector is installed at the installation port, which can reduce the difficulty of replacing and maintaining the fire detector. By placing the status indicator light outside the battery box, the status indicator light can be displayed more intuitively, so that the operator can obtain the status of the battery module more intuitively and accurately, which facilitates the timely implementation of corresponding safety measures after the battery module experiences thermal runaway, thereby improving the safety of the battery device.

[0020] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a battery device according to an embodiment of the present utility model; Figure 2 This is a partial exploded view of the battery device according to an embodiment of the present utility model; Figure 3 This is a front view of the battery housing of the battery device according to an embodiment of the present utility model; Figure 4 This is a partial exploded view of the battery device according to an embodiment of the present invention from another angle; Figure 5 This is a schematic diagram of the fire detector, pressure relief valve, and maintenance panel of the battery device according to an embodiment of the present utility model; Figure 6 This is a schematic diagram of an electrical device according to an embodiment of the present utility model.

[0022] Figure label: 1000. Electrical appliances; 100. Battery devices; 1. Battery housing; 11. Receiving cavity; 12. Main body of the housing; 121. Maintenance port; 13. Maintenance panel; 131. Mounting port; 132. Vent; 133. Protrusion; 1331. Clearance groove; 134. Connecting flange; 2. Fire detector; 21. Status indicator light; 22. Fire sensor; 3. Sealing ring; 4. Pressure relief valve; 5. High and low pressure connectors. Detailed Implementation

[0023] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0024] The following disclosure provides numerous different embodiments or examples for implementing various structures of the present invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention; however, those skilled in the art will recognize the applicability of other processes and / or the use of other materials.

[0025] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0026] In the description of this utility model, "first feature" and "second feature" may include one or more of the features.

[0027] In the description of this utility model, "multiple" means two or more.

[0028] In the description of this utility model, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or it may include the first and second features not being in direct contact but being in contact through another feature between them.

[0029] In the description of this utility model, the terms "above", "over" and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher horizontal level than the second feature.

[0030] The battery device 100 according to a first aspect embodiment of the present invention is described below with reference to the accompanying drawings.

[0031] like Figure 1 , Figure 2 and Figure 4 As shown, the battery device 100 according to the first aspect embodiment of the present invention includes: a battery housing 1, a battery module (not shown), and a fire detector 2. The battery housing 1 has a receiving cavity 11, and the battery housing 1 has an installation port 131 communicating with the receiving cavity 11. The battery module is received in the receiving cavity 11. The fire detector 2 is installed at the installation port 131 and includes a fire probe 22 and a status indicator light 21. The fire probe 22 is located inside the receiving cavity 11, and the status indicator light 21 is located outside the battery housing 1. The fire detector 2 is installed at the installation port 131, which avoids the battery housing 1 obstructing the fire detector 2 and affecting its replacement or maintenance. In other words, operators can replace or maintain the fire detector 2 without opening the housing, reducing the difficulty of replacing and maintaining the fire detector 2.

[0032] Specifically, the fire detector 2 is installed inside the installation port 131, and the fire probe 22 is located inside the receiving cavity 11. This allows the fire probe 22 to detect whether the battery module inside the receiving cavity 11 has experienced thermal runaway based on changes in temperature difference and air pressure within the receiving cavity 11. This enables the fire probe 22 of the fire detector 2 to detect the thermal runaway phenomenon of the battery module in a timely manner, facilitating the timely implementation of corresponding safety measures after the battery module experiences thermal runaway.

[0033] In addition, the status indicator light 21 is used to indicate the working status of the fire detector 2. For example, when the battery module is in normal working condition and the fire detector 22 does not detect any abnormality, the status indicator light 21 will show green. When the fire detector 22 detects thermal runaway in the housing cavity 11, the status indicator light 21 can show red, so that the operator can judge the working status of the battery module according to the information indicated by the status indicator light 21. Since the status indicator light 21 is located on the outside of the battery box 1, the status indicator light 21 can be displayed more intuitively, so that the operator can obtain the status of the battery module more intuitively and accurately, which facilitates the timely implementation of corresponding safety measures after thermal runaway of the battery module, thereby improving the safety of the battery device 100.

[0034] According to the battery device 100 of the first aspect of the present invention, the fire detector 22 can detect the thermal runaway phenomenon of the battery module in a timely manner. The fire detector 2 is installed at the installation port 131, which can reduce the difficulty of replacing and maintaining the fire detector 2. By setting the status indicator 21 outside the battery box 1, the status indicator 21 can be displayed more intuitively, so that the operator can obtain the status of the battery module more intuitively and accurately, and take corresponding safety measures in a timely manner after the battery module experiences thermal runaway, thereby improving the safety of the battery device 100.

[0035] According to some embodiments of this utility model, such as Figure 3 As shown, mounting opening 131 is formed on one side wall of the battery housing 1 along its length, and is located in the middle of the battery housing 1 along its width. That is, the distance between mounting opening 131 and the two opposite side walls of the battery housing 1 along its width is the same or approximately the same, and the fire detector 2 is located in the middle of the battery housing 1 along its width. It is understandable that if the fire detector 2 is placed at one end of the battery housing 1 along its width, when thermal runaway occurs in the area of ​​the battery module near the other end of the battery housing 1 along its width, the distance between the fire detector 2 and the thermal runaway area will be too great, affecting the real-time detection capability of the fire detector 2. Therefore, by placing the fire detector 2 in the middle of the battery housing 1 along its width, the fire sensor 22 of the fire detector 2 can better detect both ends of the battery module along its width, thus ensuring the real-time and accurate detection capability of the fire detector 2 in detecting thermal runaway.

[0036] According to some embodiments of this utility model, such as Figure 2 and Figure 3 As shown, the mounting port 131 is formed on the outer peripheral sidewall of the battery housing 1. The distance between the mounting port 131 and the top wall of the battery housing 1 (H1 as shown in the figure) is less than the distance between the mounting port 131 and the bottom wall of the battery housing 1 (H2 as shown in the figure). Here, the outer peripheral sidewall of the battery housing 1 refers to the two opposite sidewalls along the length direction and the two opposite sidewalls along the width direction of the battery housing 1. That is to say, along the height direction of the battery housing 1, i.e., the vertical direction, the mounting port 131 is set higher, which can reduce the distance between the mounting port 131 and the top space of the receiving cavity 11. If the mounting port 131 can be set at the top of the receiving cavity 11, then the probe of the fire detector 2 is located at the top of the receiving cavity 11. Therefore, when the battery module thermally runs away, the gas with low density floats up in the receiving cavity 11 and can stably contact the fire detector 22. That is, it ensures that the fire detector 22 can stably contact the thermally runaway gas, thereby improving the reliability of the fire detector 2.

[0037] According to some embodiments of this utility model, the fire detector 2 is detachably connected to the battery box 1. Therefore, when the fire detector 2 malfunctions or is damaged, it can be removed from the battery box 1 for replacement or repair, reducing the operating cost of the fire detector 2. In a specific example, the fire detector 2 is located on the outer wall of the battery box 1, allowing for installation and removal from the outside of the battery box 1. This reduces the difficulty of installation and facilitates disassembly, thereby reducing the difficulty of subsequent replacement and maintenance of the fire detector 2.

[0038] According to some embodiments of this utility model, a fixing nut is provided on the battery box 1, and the fire detector 2 is connected to the fixing nut by a threaded fastener. By pre-setting the fixing nut on the battery box 1, it is convenient to connect it with the threaded fastener used to fix the fire detector 2. For example, when installing the fire detector 2, the threaded fastener on the fire detector 2 is aligned with the fixing nut and screwed in, eliminating the need for a positioning step for the fire detector 2, reducing the installation difficulty of the fire detector 2, and improving the installation efficiency of the fire detector 2.

[0039] According to some embodiments of this utility model, a sealing ring 3 is provided between the fire detector 2 and the battery box 1, and the sealing ring 3 is arranged around the mounting opening 131. Thus, the sealing ring 3 can better seal the gap between the fire detector 2 and the battery box 1, thereby better ensuring the airtightness of the battery device 100, and further improving the IP (Ingress Protection) protection level of the battery device 100.

[0040] According to some embodiments of this utility model, the fire detector 2 includes a fire sprinkler head (not shown in the figure). The fire sprinkler head is located inside the receiving cavity 11 and is used to connect to a fire extinguisher. The fire sprinkler head is used to deliver extinguishing agent into the receiving cavity 11. The fire extinguisher stores extinguishing agent. When the fire detector 22 detects thermal runaway of the battery module inside the receiving cavity 11, the fire sprinkler head can deliver the extinguishing agent stored in the fire extinguisher into the receiving cavity 11, thereby controlling the ignition point of the battery module and preventing the fire from spreading and causing an explosion, thus improving the safety performance of the battery device 100. Furthermore, by integrating the fire sprinkler head onto the fire detector 2, there is no need to provide a separate opening for the fire sprinkler head. That is, the fire sprinkler head and the fire detector 22 can share the mounting port 131. Installing the fire detector 2 simultaneously fixes both the fire detector 22 and the fire sprinkler head, simplifying the installation process and improving the assembly efficiency of the battery device 100.

[0041] In a specific example, the mounting port 131 is located at the top of the receiving cavity 11, and therefore the fire sprinkler is also located at the top of the receiving cavity 11, so that the extinguishing agent delivered to the receiving cavity 11 through the fire sprinkler can cover a larger area to improve the fire extinguishing effect.

[0042] According to some embodiments of this utility model, the battery housing 1 is provided with an exhaust port 132 communicating with the receiving cavity 11. A pressure relief valve 4 is provided inside the exhaust port 132, and the exhaust port 132 and the mounting port 131 are located on the same side of the battery housing 1. The pressure relief valve 4 can effectively maintain the air pressure balance between the receiving cavity 11 and the external space of the battery housing 1. For example, when the battery module experiences thermal runaway, the large amount of gas generated can flow towards the exhaust port 132 and be discharged through the pressure relief valve 4, thereby preventing excessive air pressure in the receiving cavity 11 from causing deformation of the battery housing 1. By placing the mounting port 131 and the exhaust port 132 on the same side of the battery box 1, the distance between the mounting port 131 and the exhaust port 132 can be shortened. This allows the gas in the containment cavity 11 to gradually approach the fire detector 22 located at the mounting port 131 as it flows toward the exhaust port 132. This enables the fire detector 22 to promptly detect changes in the gas in the containment cavity 11 and thus detect the reaction time of thermal runaway, allowing for timely implementation of corresponding safety measures to prevent further fire spread.

[0043] According to some embodiments of this utility model, the distance between the mounting port 131 and the exhaust port 132 ranges from 2.5cm to 7.5cm. Therefore, by controlling the distance between the mounting port 131 and the exhaust port 132 within the range of 2.5cm to 7.5cm, interference between the fire detector 2 and the pressure relief valve 4 can be avoided if the distance between them is too close. Simultaneously, the distance between the mounting port 131 and the exhaust port 132 can be avoided if the distance between them is too far, which would affect the real-time detection capability of the fire detector 2. In other words, while avoiding interference between the fire detector 2 and the pressure relief valve 4, the fire detector 2 can be positioned as close as possible to the pressure relief valve 4 to shorten the reaction time of the fire detector 2 in detecting thermal runaway. For example, the distance between the mounting port 131 and the exhaust port 132 can be 2.5cm, 3cm, 3.5cm, 4cm, 4.5cm, 5cm, 5.5cm, 6cm, 6.5cm, 7cm, 7.5cm, etc.

[0044] According to some embodiments of this utility model, the mounting port 131 and the exhaust port 132 are located at the same height. Since the gas in the receiving cavity 11 is discharged from the battery box 1 through the exhaust port 132, the height of the exhaust port 132 is the exhaust height of the battery box 1. Therefore, by setting the mounting port 131 and the exhaust port 132 to be at the same height, the fire detector 2 located at the mounting port 131 can accurately detect gas changes at the exhaust position of the battery box 1, ensuring the accuracy and real-time performance of the fire detector 2. In some embodiments, the distance between the exhaust port 132 and the top wall of the battery box 1 is less than the distance between the exhaust port 132 and the bottom wall of the battery box 1, allowing the low-density gas generated by thermal runaway to float within the receiving cavity 11 and then smoothly discharge from the battery box 1 through the exhaust port 132, thereby improving exhaust efficiency.

[0045] In some embodiments, the distance between the mounting port 131 and the exhaust port 132 ranges from 2.5cm to 7.5cm, and the mounting port 131 and the exhaust port 132 are located at the same height. This allows the fire detector 2 to be installed as close as possible to the pressure relief valve 4, ensuring the accuracy and real-time performance of the fire detector 2.

[0046] According to some embodiments of this utility model, the battery box 1 is provided with high and low voltage connectors 5. The fire detector 2, pressure relief valve 4, and high and low voltage connectors 5 are arranged at intervals along the circumference of the battery box 1, with the fire detector 2 located on the side of the pressure relief valve 4 opposite to the high and low voltage connectors 5. That is, along the circumference of the battery box 1, the fire detector 2 and the high and low voltage connectors 5 are located on opposite sides of the pressure relief valve 4. This effectively increases the distance between the fire detector 2 and the high and low voltage connectors 5, thereby providing space for the wiring harnesses connected to the fire detector 2 and the high and low voltage connectors 5, thus avoiding interference between them.

[0047] According to some embodiments of this utility model, the battery box 1 includes a box body 12 and a maintenance panel 13. A maintenance port 121 is formed on the box body 12. The maintenance panel 13 is detachably disposed on the box body 12 to open or close the maintenance port 121. An installation port 131 is formed on the maintenance panel 13. Therefore, after a battery module failure, only the maintenance port 121 needs to be opened to inspect and repair the battery module, reducing the maintenance difficulty of the battery module. Furthermore, since the installation port 131 is formed on the maintenance panel 13, and the fire detector 2 is installed on the maintenance panel 13, the fire detector 2 can be installed on the maintenance panel 13 first, and then the maintenance panel 13 can be installed on the box body 12 to complete the installation of the fire detector 2. This provides greater operating space for the installation of the fire detector 2, reducing the installation difficulty of the fire detector 2.

[0048] According to some embodiments of this utility model, a fuse is provided on the battery module, and the maintenance port 121 is arranged opposite to the fuse. Therefore, when the fuse fails due to the current exceeding the safety threshold, the fuse can be replaced by disassembling the maintenance panel 13, which can reduce the difficulty of fuse replacement. In addition, a sampling device for collecting information such as current, voltage, and temperature of the battery module is also provided on the part of the battery module opposite to the maintenance port 121. The sampling device can also be maintained by opening the maintenance port 121.

[0049] According to some embodiments of this utility model, the main body 12 includes a first sidewall, and a maintenance opening 121 is disposed on the first sidewall. The area ratio of the maintenance opening 121 to the first sidewall ranges from 60% to 80%. This avoids the difficulty for operators to inspect the battery module through the maintenance opening 121 if the opening area is too small, while also preventing the maintenance opening 121 from being too large and affecting the overall structure of the main body 12 and the arrangement of other components. In other words, while ensuring that the maintenance opening 121 has a sufficient opening area to facilitate operator inspection of the battery module, the opening area of ​​the maintenance opening 121 is controlled as much as possible to ensure the structural strength of the main body 12 and to reserve sufficient space for the arrangement of other components such as the high and low voltage connectors 5. For example, the area ratio of the maintenance opening 121 to the first sidewall can be 60%, 62%, 65%, 67%, 70%, 73%, 75%, 78%, 80%, etc.

[0050] According to some embodiments of this utility model, the battery housing 1 has an outwardly protruding bulge 133, and the bulge 133 has a clearance groove 1331 that opens toward the battery module. The mounting opening 131 is formed on the bottom wall of the clearance groove 1331, and the fire detector 22 is located in the clearance groove 1331. Thus, by providing the bulge 133, the clearance groove 1331 within the bulge 133 can provide space for the fire detector 22, thereby avoiding the risk of interference between the fire detector 22 and the battery module during installation.

[0051] According to some embodiments of this utility model, the battery box 1 includes a box body 12 and a maintenance panel 13. A maintenance opening 121 is formed on the box body. The maintenance panel 13 is detachably disposed on the box body 12 to open or close the maintenance opening 121. An installation opening 131 is formed on the maintenance panel 13. The maintenance panel 13 includes a protrusion 133 and a connecting flange 134. The connecting flange 134 is disposed on the outer peripheral edge of the open opening of the clearance groove 1331 and connected to the box body 12. The distance between the fire detector 2 and the battery module is not less than the distance between the connecting flange 134 and the battery module. That is, the distance between the fire detector 2 and the battery module is equal to the distance between the connecting flange 134 and the battery module, or the distance between the fire detector 2 and the battery module is greater than the distance between the connecting flange 134 and the battery module. In other words, the end of the fire detector 2 near the battery module extends beyond the connecting flange 134 toward the side of the battery module. Therefore, the distance between the fire detector 2 and the battery module can be better controlled, thereby avoiding the risk of interference caused by the fire detector 22 contacting the battery module during installation.

[0052] The following description, with reference to the accompanying drawings, describes an electrical device 1000 according to a second aspect of the present invention.

[0053] According to a second aspect of the present invention, an electrical device 1000 includes a battery device 100.

[0054] According to the second aspect embodiment of the present invention, the fire detector 22 can detect the thermal runaway phenomenon of the battery module in a timely manner. The fire detector 2 is installed at the installation port 131, which can reduce the difficulty of replacing and maintaining the fire detector 2. By setting the status indicator 21 outside the battery box 1, the status indicator 21 can be displayed more intuitively, so that the operator can obtain the status of the battery module more intuitively and accurately, and take corresponding safety measures in a timely manner after the battery module experiences thermal runaway, thereby improving the safety of the battery device 100.

[0055] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0056] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0057] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A battery device, characterized in that, include: A battery housing, wherein a receiving cavity is formed inside the battery housing, and the battery housing is provided with an installation port communicating with the receiving cavity; The battery module is housed in the receiving cavity; A fire detector is installed at the mounting opening and includes a fire probe and a status indicator light. The fire probe is located inside the receiving cavity, and the status indicator light is located outside the battery box.

2. The battery device according to claim 1, characterized in that, The mounting opening is formed on the outer peripheral sidewall of the battery housing, and the distance between the mounting opening and the top wall of the battery housing is less than the distance between the mounting opening and the bottom wall of the battery housing.

3. The battery device according to claim 1, characterized in that, The fire detector is detachably connected to the battery box; and / or, a sealing ring is provided between the fire detector and the battery box, and the sealing ring is arranged around the mounting port.

4. The battery device according to claim 1, characterized in that, The fire detector includes a fire sprinkler head, which is located inside the receiving cavity and is used to connect to an external fire extinguisher. The fire sprinkler head is used to deliver extinguishing agent into the receiving cavity.

5. The battery device according to claim 1, characterized in that, The battery housing is provided with an exhaust port that communicates with the receiving cavity. The exhaust port is provided with a pressure relief valve. The exhaust port and the mounting port are located on the same side of the battery housing.

6. The battery device according to claim 5, characterized in that, The distance between the mounting port and the exhaust port is in the range of 2.5cm to 7.5cm; and / or, the mounting port and the exhaust port are located at the same height.

7. The battery device according to claim 5, characterized in that, The battery box is equipped with high and low pressure connectors. The fire detector, the pressure relief valve and the high and low pressure connectors are arranged at intervals along the circumference of the battery box. The fire detector is located on the side of the pressure relief valve away from the high and low pressure connectors.

8. The battery device according to any one of claims 1-7, characterized in that, The battery enclosure includes a main body and a maintenance panel. A maintenance port is formed on the main body. The maintenance panel is detachably disposed on the main body to open or close the maintenance port. The mounting port is formed on the maintenance panel.

9. The battery device according to claim 8, characterized in that, The battery module is equipped with a fuse, and the maintenance port is disposed opposite to the fuse; and / or, the main body of the box includes a first side wall, the maintenance port is disposed on the first side wall, and the area ratio of the maintenance port to the first side wall is in the range of 60% to 80%.

10. The battery device according to any one of claims 1-7, characterized in that, The battery housing has an outwardly protruding bulge, and the bulge has a clearance groove that opens toward the battery module. The mounting port is formed on the bottom wall of the clearance groove, and the fire detector is located inside the clearance groove.

11. The battery device according to claim 10, characterized in that, The battery enclosure includes a main body and a maintenance panel. A maintenance opening is formed on the main body. The maintenance panel is detachably disposed on the main body to open or close the maintenance opening. An installation opening is formed on the maintenance panel. The maintenance panel includes a protrusion and a connecting flange. The connecting flange is disposed on the outer peripheral edge of the open opening of the clearance groove and connected to the main body. The distance between the fire detector and the battery module is not less than the distance between the connecting flange and the battery module.

12. An electrical appliance, characterized in that, include: The battery device according to any one of claims 1-11.

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