Battery compartment exhaust detection system and battery

Abstract

The utility model discloses a battery compartment exhaust detection system and a battery, and relates to the technical field of ship control, and the system comprises an exhaust system arranged in a battery compartment; the air pressure sensing module is respectively communicated with the interior and the exterior of the battery cabin and is used for sensing the air pressure inside and outside the battery cabin and outputting a first detection signal; the control module is respectively connected with the air pressure sensing module and the exhaust system and is used for controlling the exhaust system to execute an exhaust function and determining that exhaust is abnormal when the first detection signal indicates that the air pressure inside the battery compartment is not less than the air pressure outside the battery compartment. The exhaust function of the battery compartment can be monitored in real time, whether exhaust is abnormal or not is determined according to the air pressure difference between the interior of the battery compartment and the exterior of the battery compartment, the problem of misjudgment in the related technology can be avoided, and the detection result is more reliable.

Description

Technical Field

[0001] This application relates to the field of ship control technology, and in particular to a battery compartment exhaust detection system and a battery. Background Technology

[0002] As the global shipping industry transitions to a green and low-carbon model, electric ships, with their advantages of zero emissions, low noise, and high efficiency, have become an important development direction for vessels operating in inland waterways, coastal waters, and ports. Lithium-ion batteries, due to their high energy density, long cycle life, and fast charging capabilities, have become the mainstream energy storage choice for electric ships. However, lithium-ion batteries may experience thermal runaway under abnormal conditions such as overcharging, overheating, or mechanical damage, releasing large amounts of flammable gases (such as hydrogen, methane, and carbon monoxide), accompanied by high temperatures and fire risks. To ensure the safe operation of electric ships, stringent requirements are imposed on the safety design of the battery compartment, mainly including: a flammable gas detection system: real-time monitoring of the concentration of flammable gases in the battery compartment and triggering an alarm when a dangerous threshold is reached; an emergency exhaust system: rapid activation upon flammable gas alarm to expel dangerous gases outside the compartment and prevent accumulation leading to an explosion; and fire and explosion prevention measures: such as explosion-proof electrical equipment, fire dampers, and inert gas fire extinguishing systems to control the spread of fire. The emergency exhaust system is crucial. If the emergency exhaust system malfunctions, dangerous gases may not be discharged properly, posing an explosion risk. It is necessary to identify whether the emergency exhaust system is functioning properly in advance. If there is any abnormality, an alarm should be raised in advance, and personnel should be involved in handling the situation.

[0003] Currently, most electric ships detect faults in their emergency exhaust systems primarily by installing sensors on the airlocks and fans to monitor their operation. For example, current or speed sensors are installed on the exhaust fan motors to monitor whether the fan is running normally, thus determining if the emergency exhaust system is malfunctioning. However, this approach is prone to false alarms and fails to reflect the actual exhaust effect. It only indirectly detects whether airflow is smooth and cannot reliably determine if the system is functioning correctly.

[0004] The information disclosed in this background section is included only to enhance the understanding of the context of this disclosure, and therefore may contain information that does not constitute relevant technology currently known to those skilled in the art. Utility Model Content

[0005] This application provides a battery compartment exhaust detection system and a battery to solve the problem of fault detection in the emergency exhaust system of a ship's battery compartment.

[0006] The technical solution adopted in this application is as follows:

[0007] In a first aspect, this application provides a battery compartment exhaust detection system, comprising:

[0008] The exhaust system, located in the battery compartment, is used to perform the exhaust function of venting the gas inside the battery compartment.

[0009] The air pressure sensing module is connected to both the inside and outside of the battery compartment, and is used to sense the air pressure inside and outside the battery compartment and output a first detection signal.

[0010] The control module is connected to the air pressure sensing module and the exhaust system respectively. It is used to control the exhaust system to perform the exhaust function and to determine the exhaust abnormality when the first detection signal indicates that the air pressure inside the battery compartment is not less than the air pressure outside the battery compartment.

[0011] This application senses the air pressure inside and outside the battery compartment and generates a first detection signal. If the exhaust is normal, the air pressure inside the battery compartment will be lower than the air pressure outside. Therefore, when the first detection signal indicates that the air pressure inside the battery compartment is not lower than the air pressure outside, an exhaust anomaly is determined. This enables real-time monitoring of the battery compartment's exhaust function, allowing for timely detection and handling of exhaust anomalies. This prevents excessively high air pressure or the accumulation of harmful gases inside the compartment due to exhaust malfunctions, significantly improving the safety and reliability of the battery compartment, effectively reducing the operational risks of the battery module, and ensuring the stable operation of the battery system. Moreover, this application determines whether there is an exhaust anomaly by measuring the air pressure difference between the inside and outside of the battery compartment, avoiding the misjudgment problems in related technologies. As long as the exhaust is normal, the air pressure inside the battery compartment will be lower than the air pressure outside. Whether it is a malfunction in the exhaust system itself or a malfunction in the airflow channel, it will ultimately lead to the air pressure inside the battery compartment not being lower than the air pressure outside. Therefore, the detection results of this application are more reliable.

[0012] In conjunction with the first aspect, in one possible implementation, the first detection signal is a differential pressure signal, and the air pressure sensing module includes a differential pressure sensor for sensing the air pressure difference between the inside and outside of the battery compartment and generating a differential pressure signal.

[0013] This application uses a differential pressure sensor to directly detect the air pressure difference inside and outside the battery compartment and generate a differential pressure signal. This can more accurately and quickly reflect the air pressure changes inside and outside the battery compartment, making it easier for the control module to judge abnormal conditions of the exhaust system in a timely manner. This improves the sensitivity and accuracy of exhaust anomaly detection and further enhances the safety and reliability of battery compartment operation.

[0014] In conjunction with the first aspect, in one possible implementation, the differential pressure sensor includes:

[0015] The low-pressure detection port is connected to the inside of the battery compartment.

[0016] The high-voltage detection port is connected to the outside of the battery compartment.

[0017] This application directly and accurately measures the pressure difference between the inside and outside of the battery compartment through a low-pressure detection port connected to the inside of the battery compartment and a high-pressure detection port connected to the outside of the battery compartment in a differential pressure sensor. This allows for rapid detection of abnormal air pressure inside the battery compartment, effectively improving the reliability and response speed of the exhaust anomaly detection system and avoiding safety hazards caused by abnormal air pressure.

[0018] In conjunction with the first aspect, one possible implementation also includes:

[0019] The low-pressure channel is connected to the low-pressure detection port, which in turn is connected to the inside of the battery compartment via the low-pressure channel.

[0020] The high-voltage channel connects to the high-voltage detection port and extends through the battery compartment to the outside of the battery compartment. The high-voltage detection port is connected to the outside of the battery compartment through the high-voltage channel.

[0021] This application sets up low-pressure and high-pressure channels to reliably connect the differential pressure sensor to the inside and outside of the battery compartment, respectively, accurately detecting the pressure difference between the inside and outside of the battery compartment, improving the accuracy of differential pressure detection and system stability, and further ensuring the safety and reliability of monitoring abnormal exhaust from the battery compartment.

[0022] In conjunction with the first aspect, in one possible implementation, the first detection signal includes a first air pressure detection signal and a second air pressure detection signal, and the air pressure sensing module includes:

[0023] An internal air pressure sensor is installed inside the battery compartment and connected to the control module. It is used to detect the air pressure inside the battery compartment and output a first air pressure detection signal to the control module.

[0024] An external air pressure sensor, located outside the battery compartment and connected to the control module, is used to detect the air pressure outside the battery compartment and output a second air pressure detection signal to the control module.

[0025] This application sets up internal and external air pressure sensors to detect the air pressure inside and outside the battery compartment, and outputs a first air pressure detection signal and a second air pressure detection signal to the control module respectively, thereby achieving accurate monitoring of the air pressure difference inside and outside the battery compartment, improving the accuracy and reliability of abnormal exhaust detection in the battery compartment, and ensuring the safe operation of the battery system.

[0026] In conjunction with the first aspect, one possible implementation also includes:

[0027] An alarm device, connected to the control module, is used to activate the alarm function when there is an abnormality in the exhaust, under the control of the control module.

[0028] This application, by setting up an alarm device, can promptly issue an alarm signal when there is abnormal exhaust, reminding staff to take quick measures, effectively avoiding safety hazards caused by abnormal air pressure in the battery compartment, and further improving the safety and reliability of system operation.

[0029] In conjunction with the first aspect, in one possible implementation, the exhaust system includes:

[0030] A combustible gas detector is installed inside the battery compartment and connected to the control module. It is used to detect the concentration of combustible gas inside the battery compartment and output a second detection signal to the control module so that the control module can activate the exhaust function when the second detection signal is valid.

[0031] This application installs a combustible gas detector inside the battery compartment, which can monitor the concentration of combustible gas in the battery compartment in real time. Once the second detection signal is valid, it means that the gas concentration in the compartment exceeds the safe range, and the exhaust function can be quickly activated to expel the combustible gas in the compartment in time, preventing the accumulation of gas and causing safety hazards, thereby effectively improving the safety and reliability of the battery compartment.

[0032] In conjunction with the first aspect, in one possible implementation, the battery compartment is also provided with an exhaust channel and an air intake channel, both of which connect the inside and outside of the battery compartment to enable gas circulation between the inside and outside of the battery compartment.

[0033] The exhaust system includes a fan, which is installed in the exhaust channel and connected to and controlled by the control module.

[0034] This application achieves effective gas circulation between the battery compartment and the external environment by setting up exhaust and intake channels in the battery compartment; and by installing a fan in the exhaust channel, it can actively and quickly extract flammable gases or other abnormal gases accumulated inside the battery compartment when the exhaust function is activated, effectively reducing the gas concentration inside the compartment and avoiding safety risks caused by gas accumulation, thereby further improving the safety and stability of the battery compartment during operation.

[0035] In conjunction with the first aspect, in one possible implementation, the exhaust system includes:

[0036] The first air damper is located in the exhaust channel, connected to and controlled by the control module, and is used to close the exhaust channel and open it after the exhaust function is activated.

[0037] And / or, a second air damper, located in the air intake channel, connected to and controlled by the control module, used to close the air intake channel and open it after the exhaust function is activated.

[0038] This application, by installing a first airlock and / or a second airlock on the exhaust channel and / or intake channel respectively, effectively prevents external dust, moisture, salt spray, or foreign objects from entering the battery compartment under normal circumstances, ensuring the cleanliness and safety of the battery compartment environment, reducing the impact on the battery, significantly improving the safety and reliability of the battery, and meeting the safety operation requirements of the ship in special environments; when the exhaust function is activated, the control module quickly opens the airlock to achieve rapid ventilation and gas flow, effectively improving exhaust efficiency, timely reducing the concentration of flammable gases and other abnormal gases inside the battery compartment, and further enhancing the safety, stability, and reliability of the battery compartment.

[0039] Secondly, this application also provides a battery, including a battery compartment and a battery compartment exhaust detection system as described in any of the implementations of the first aspect above.

[0040] This application, by configuring the aforementioned battery compartment exhaust detection system in the battery, can proactively and promptly monitor and effectively exhaust the gas and heat generated inside the battery compartment due to abnormal battery operation, reduce the gas concentration and temperature inside the battery compartment, reduce safety risks such as battery thermal runaway and deflagration, and significantly improve the safety and reliability of battery operation.

[0041] In conjunction with the second aspect, in one possible implementation, the battery compartment is a marine lithium battery compartment.

[0042] The environment during ship operation is complex, and there may be safety hazards such as the accumulation of flammable gases and temperature rise inside the lithium battery compartment. Therefore, it is necessary to carry out active ventilation and air exchange in a timely and effective manner to prevent dangerous situations such as thermal runaway and deflagration of lithium batteries.

[0043] Other advantages, objectives and features of this application will be partly apparent from the description below, and partly understood by those skilled in the art through study and practice of this application. Attached Figure Description

[0044] To more clearly illustrate the technical solutions in the embodiments or related technologies of this application, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0045] Figure 1 This is one of the structural schematic diagrams of the battery compartment exhaust detection system provided in the embodiments of this application;

[0046] Figure 2 This is the second schematic diagram of the battery compartment exhaust detection system provided in the embodiments of this application. Detailed Implementation

[0047] It should be noted that, in this application, the terms "exemplary" or "for example" are used to indicate that something is being described as an example, illustration, or illustration. Any embodiment or design described as "exemplary" or "for example" in this application should not be construed as being more preferred or advantageous than other embodiments or design solutions. Specifically, the use of terms such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner.

[0048] The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items. In this application, "at least one" means one or more, and "more than one" means two or more. The terms "first," "second," and other ordinal terms used in this application may be used to describe various constituent elements, but these constituent elements are not limited by these terms. The purpose of using these terms is solely to distinguish one constituent element from others and should not be construed as indicating or implying relative importance. For example, without departing from the scope of this application, a first constituent element may be named a second constituent element, and similarly, a second constituent element may be named a first constituent element.

[0049] Each circuit or other component may be described or referred to as "for" performing one or more tasks. In this context, "for" is used to imply a structure by indicating that the circuit / component includes a structure (e.g., a circuit system) that performs one or more tasks during operation. Therefore, even when the specified circuit / component is currently inoperable (e.g., not turned on), it can still be referred to as "for performing that task." Circuits / components used with the term "for" include hardware, such as circuits that perform operations.

[0050] Before introducing the embodiments of this application, the background technology involved in this application will be introduced first.

[0051] Currently, fault detection in the emergency exhaust system of electric ships mainly relies on current or speed sensors of the fan and airlock to indirectly determine the operating status. This approach has shortcomings such as a high false alarm rate, inability to directly reflect airflow smoothness, and inability to reliably determine the actual exhaust effect. There is an urgent need for more effective and direct monitoring and diagnostic methods to ensure the safe operation of electric ships.

[0052] In summary, existing fault detection schemes for emergency exhaust systems in electric ships suffer from high false alarm rates and an inability to reflect actual exhaust performance. To address these issues, this application provides a battery compartment exhaust detection system and battery, which resolves the problems of high false alarm rates and inability to reflect actual exhaust performance in existing solutions.

[0053] Please see Figure 1 , Figure 1 One of the structural schematic diagrams of the battery compartment exhaust detection system provided in the embodiments of this application is shown.

[0054] like Figure 1 As shown, the battery compartment exhaust detection system includes:

[0055] The exhaust system 100 is located in the battery compartment and is used to perform the exhaust function of venting the gas inside the battery compartment.

[0056] The air pressure sensing module 200 is connected to the inside and outside of the battery compartment, respectively, and is used to sense the air pressure inside and outside the battery compartment and output a first detection signal.

[0057] The control module 300 is connected to the air pressure sensing module 200 and the exhaust system 100 respectively, and is used to control the exhaust system 100 to perform the exhaust function, and to determine the exhaust abnormality when the first detection signal indicates that the air pressure inside the battery compartment is not less than the air pressure outside the battery compartment.

[0058] Thus, the control module 300 controls the exhaust system 100 to perform the exhaust function, expelling the gas inside the battery compartment; on the other hand, it determines whether the exhaust function is normal based on the first detection signal output by the pressure sensing module 200. If the exhaust is normal, the air pressure inside the battery compartment will be lower than the air pressure outside the battery compartment. Therefore, this application uses the pressure sensing module 200 to sense the air pressure inside and outside the battery compartment and outputs the first detection signal. When it indicates that the air pressure inside the battery compartment is not less than (i.e., greater than or equal to) the air pressure outside the battery compartment, it means that the gas has not been expelled, thereby confirming an exhaust anomaly.

[0059] This application determines whether there is an exhaust abnormality by measuring the air pressure difference between the inside and outside of the battery compartment. This avoids the misjudgment problem in related technologies, because as long as the exhaust is normal, the air pressure inside the battery compartment will be lower than the air pressure outside the battery compartment. Whether it is a malfunction in the exhaust system itself or a malfunction in the airflow channel, it will eventually lead to the air pressure inside the battery compartment being no less than the air pressure outside the battery compartment. Therefore, the detection results of this application are more reliable.

[0060] Understandably, there are various scenarios where the venting function is required. For example, the pressure inside the battery compartment may increase due to overheating, or gas may accumulate inside the battery during operation. If these gases cannot be vented in time, they may cause the pressure inside the battery compartment to rise, leading to battery deformation, damage to seals, and in severe cases, even a safety accident. Therefore, the aforementioned venting system 100 can vent gases in a timely manner, ensuring that the pressure inside the compartment remains stable within a safe range and avoiding potential safety hazards. Furthermore, battery damage may produce hazardous gases; the aforementioned venting system 100 can also vent these gases in a timely manner, ensuring the timely dispersal of hazardous gases and preventing their accumulation and potential explosion.

[0061] In some embodiments, the air pressure sensing module 200 includes a differential pressure sensor 201 for sensing the air pressure difference between the inside and outside of the battery compartment and generating a differential pressure signal, i.e., the first detection signal is a differential pressure signal indicating the pressure difference between the air pressure inside and outside the battery compartment.

[0062] See here. Figure 2 , Figure 2 This is a second schematic diagram of the battery compartment exhaust detection system provided in an embodiment of this application. Figure 2 As shown, the air pressure sensing module 200 in the battery compartment exhaust detection system is a differential pressure sensor 201, which can detect the air pressure difference between the inside and outside of the battery compartment in real time. When gas is generated during battery operation, causing changes in internal air pressure, the differential pressure sensor 201 can accurately sense the pressure difference between the inside and outside and generate a corresponding differential pressure signal as the first detection signal. Through this signal, the system can promptly grasp the pressure status inside the battery compartment, determine whether the exhaust system 100 is operating normally or whether there is an abnormality, thereby improving the accuracy and timeliness of battery compartment gas emission detection and enhancing the overall safety and reliability of the battery system operation.

[0063] The differential pressure sensor 201 includes: a low-pressure detection port 2011, which is connected to the inside of the battery compartment; and a high-pressure detection port 2012, which is connected to the outside of the battery compartment.

[0064] The first detection signal depends on the specific sensor type of the differential pressure sensor 201. For example, when the differential pressure sensor 201 is a voltage output type sensor, the first detection signal is a voltage signal; when the differential pressure sensor 201 is a current output type sensor, the first detection signal is a current signal. Taking the voltage output type sensor as an example, the greater the pressure difference between the high-pressure detection port 2012 and the low-pressure detection port 2011, the higher the voltage signal output by the differential pressure sensor 201. The voltage signal can be compared with a fixed level (the voltage signal output by the differential pressure sensor 201 when the pressure difference is zero, depending on the specific sensor type; for example, some differential pressure sensors 201 output 0V when the pressure difference is zero, while others output 1V, etc.) (this can be implemented using an external comparator or an internal comparator of the control module 300), and a comparison signal is output. The control module 300 can then determine whether the air pressure inside the battery compartment is less than the air pressure outside the battery compartment based on this comparison signal. For example, assuming the voltage signal output by the differential pressure sensor 201 is less than a fixed level, and the comparator outputs a high / low level, then when the level output by the comparator flips to a low / high level, it means that the air pressure inside the battery compartment is less than the air pressure outside the battery compartment.

[0065] In this embodiment, the differential pressure sensor 201 directly and simultaneously measures the pressure difference between the low-pressure detection port 2011 and the high-pressure detection port 2012, and generates a differential pressure signal in real time. This intuitively reflects the pressure inside the battery compartment relative to the external environment, thereby achieving precise monitoring of the battery compartment's exhaust function and enabling timely detection of abnormalities such as abnormal gas emissions, ventilation blockage, or leakage inside the battery compartment.

[0066] In some embodiments, it also includes:

[0067] The low-pressure channel 400 is connected to the low-pressure detection port 2011, and the low-pressure detection port 2011 is connected to the inside of the battery compartment through the low-pressure channel 400.

[0068] The high-voltage channel 500 is connected to the high-voltage detection port 2012 and extends through the battery compartment to the outside of the battery compartment. The high-voltage detection port 2012 is connected to the outside of the battery compartment through the high-voltage channel 500.

[0069] For example, please refer to [further details]. Figure 2 The differential pressure sensor 201 monitors the air pressure inside the battery compartment in real time through the low-pressure channel 400 and the air pressure outside the battery compartment in real time through the high-pressure channel 500. In this way, by measuring the pressure difference between the high-pressure and low-pressure detection ports 2011, the pressure difference change inside and outside the battery compartment can be accurately sensed, realizing the monitoring of the air pressure status inside the battery compartment, thereby timely detection of abnormalities and ensuring the safe and reliable operation of the battery system.

[0070] In some embodiments, the barometric pressure sensing module 200 may also be implemented using two sensors, with the corresponding first detection signal including a first barometric pressure detection signal and a second barometric pressure detection signal. For example, the barometric pressure sensing module 200 includes:

[0071] An internal air pressure sensor is installed inside the battery compartment and connected to the control module 300. It is used to detect the air pressure inside the battery compartment and output a first air pressure detection signal to the control module 300.

[0072] An external air pressure sensor is installed outside the battery compartment and connected to the control module 300. It is used to detect the air pressure outside the battery compartment and output a second air pressure detection signal to the control module 300.

[0073] The first and second air pressure detection signals are determined based on the sensor type. Generally, both use the same type of sensor, such as voltage output sensors. In this case, both the first and second air pressure detection signals are voltage signals. The higher the voltage signal output by the sensor, the higher the air pressure. Therefore, by sending the first and second air pressure detection signals to a comparator for comparison (either an external or internal comparator can be used in the control module 300), and outputting a comparison signal, the control module 300 can determine whether the air pressure inside the battery compartment is less than the pressure difference outside the battery compartment based on this comparison signal. For example, assuming the first air pressure detection signal is lower than the high / low level output of the second air pressure detection signal, when the level output by the comparator flips to low / high, it means that the air pressure inside the battery compartment is less than the pressure difference outside the battery compartment.

[0074] This embodiment utilizes two independent pressure sensors to achieve the function of a single differential pressure sensor. The inner and outer sensors can be installed in appropriate positions to improve the accuracy of internal and external pressure difference detection, effectively evaluate the exhaust effect of the battery compartment, and quickly detect and locate any possible abnormalities in the exhaust system, thereby improving the safety, reliability, and stability of the battery compartment.

[0075] In some embodiments, it also includes:

[0076] An alarm device, connected to the control module 300, is used to activate the alarm function when there is an abnormality in the exhaust, under the control of the control module 300.

[0077] For example, the alarm device is communicatively connected to the control module 300. When the control module 300 analyzes and judges the real-time air pressure data fed back by the air pressure sensing module 200, if it detects abnormal exhaust or abnormal air pressure difference in the battery compartment, the control module 300 will send an activation signal to the alarm device. Upon receiving the signal, the alarm device will immediately activate its alarm function. The alarm device can use, but is not limited to, audible and visual alarms, vibration alarms, SMS alarms, email alarms, and telephone voice alarms. The alarm device can promptly remind staff to take appropriate measures, thereby effectively preventing damage to the battery compartment or safety accidents caused by abnormal exhaust, and ensuring the stability and safety of the system operation.

[0078] For example, please refer to [further details]. Figure 2 In some embodiments, the exhaust system 100 includes:

[0079] Combustible gas detector 101 is installed inside the battery compartment and connected to the control module 300. It is used to detect the concentration of combustible gas inside the battery compartment and output a second detection signal to the control module 300 so that the control module 300 can activate the exhaust function when the second detection signal is valid.

[0080] The second detection signal is determined based on the specific type of the combustible gas detector 101. For example, when using an infrared absorption detector, the second detection signal is a current signal; when using a semiconductor detector, the second detection signal is a voltage signal. It is understood that a higher current / voltage ratio indicates a higher concentration of combustible gas. Therefore, the current / voltage signal output by the combustible gas detector 101 can be compared with a fixed value (a fixed value, which is the current / voltage value output by the combustible gas detector 101 at a preset threshold for combustible gas concentration) (this can be achieved using either an external or internal comparator of the control module 300), and a comparison signal is output. The control module 300 can then determine whether the concentration of combustible gas in the battery compartment is too high based on this comparison signal. For example, if the current / voltage signal output by the combustible gas detector 101 is greater than the fixed value, the signal is considered valid; otherwise, it is considered invalid. Furthermore, when a valid second detection signal is detected, the control module 300 can promptly control the exhaust system 100 to perform the exhaust function, thereby reducing the risk of combustible gas accumulation in the battery compartment and ensuring system operational safety.

[0081] See Figure 2 In some embodiments, the battery compartment is also provided with an exhaust channel 700 and an air intake channel 600. Both the exhaust channel 700 and the air intake channel 600 are connected to the inside and outside of the battery compartment to realize gas circulation between the inside and outside of the battery compartment, mainly to exhaust the internal gas to the outside.

[0082] The exhaust system 100 includes a fan 102, which is installed in the exhaust channel 700, connected to and controlled by the control module 300, and is used to effectively replace the gas in the battery compartment to ensure the safety of the battery compartment environment.

[0083] In some embodiments, the exhaust system 100 includes:

[0084] The first air damper 103 is installed in the exhaust channel 700, connected to and controlled by the control module 300, and is used to close the exhaust channel 700 and open it after the exhaust function is enabled.

[0085] In some embodiments, the exhaust system 100 includes:

[0086] The second air damper 104 is installed in the air intake channel 600, connected to and controlled by the control module 300, and is used to close the air intake channel 600 and open it after the exhaust function is activated.

[0087] The first air damper 103 and the second air damper 104 are normally closed, but open after the exhaust function is activated, thereby enabling the exhaust of gas inside the battery compartment and the replenishment of fresh air from the outside, ensuring safe ventilation inside the compartment.

[0088] Based on the same technical concept, this application also provides a battery, including a battery compartment and a battery compartment exhaust detection system as described in any of the above embodiments. It is understood that the battery compartment is a space or structure for accommodating batteries, used to store individual battery cells or battery packs; the battery compartment exhaust detection system is used to monitor the gas concentration inside the battery compartment and detect in real time whether the exhaust system 100 is abnormal, thereby achieving active exhaust ventilation and reducing safety hazards.

[0089] In some embodiments, the battery compartment is a marine lithium battery compartment. For example, in a marine lithium battery compartment, when the battery malfunctions or the gas concentration inside the compartment reaches a set threshold, the control module 300 immediately opens the first air damper 103 of the exhaust channel 700 and the second air damper 104 of the air intake channel 600, and starts the fan 102 to quickly expel the heat and harmful gases generated inside the battery compartment, while replenishing fresh air from outside, preventing gas accumulation inside the battery compartment, avoiding safety accidents such as battery overheating or explosion, thereby ensuring the safety of the ship and personnel.

[0090] It should be noted that the order of description of the embodiments in this application is not intended to limit the priority of the embodiments.

[0091] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this application and in its specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0092] It should be noted that, unless otherwise specified, the term "connected" or "linked" in this application includes not only directly connecting two entities, but also indirectly connecting them through other entities that have beneficial improvement effects.

[0093] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many forms under the guidance of this application without departing from the spirit and scope of protection of the claims. All equivalent transformations made under the inventive concept of this application using the content of this application's specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.

Claims

1. A battery compartment exhaust detection system, characterized in that, include: An exhaust system, located in the battery compartment, is used to perform the exhaust function of venting the gas inside the battery compartment. A barometric pressure sensing module is connected to both the inside and outside of the battery compartment, and is used to sense the barometric pressure inside and outside the battery compartment and output a first detection signal. The control module is connected to the air pressure sensing module and the exhaust system respectively, and is used to control the exhaust system to perform the exhaust function, and to determine an exhaust abnormality when the first detection signal indicates that the air pressure inside the battery compartment is not less than the air pressure outside the battery compartment.

2. The battery compartment exhaust detection system according to claim 1, characterized in that, The first detection signal is a differential pressure signal, and the air pressure sensing module includes a differential pressure sensor for sensing the air pressure difference between the inside and outside of the battery compartment and generating the differential pressure signal.

3. The battery compartment exhaust detection system according to claim 2, characterized in that, The differential pressure sensor includes: The low-pressure detection port is connected to the interior of the battery compartment; The high-voltage detection port is connected to the outside of the battery compartment.

4. The battery compartment exhaust detection system according to claim 3, characterized in that, Also includes: A low-pressure channel is connected to the low-pressure detection port, and the low-pressure detection port is connected to the inside of the battery compartment through the low-pressure channel; A high-voltage channel is connected to the high-voltage detection port and extends through the battery compartment to the outside of the battery compartment. The high-voltage detection port is connected to the outside of the battery compartment through the high-voltage channel.

5. The battery compartment exhaust detection system according to claim 1, characterized in that, The first detection signal includes a first air pressure detection signal and a second air pressure detection signal, and the air pressure sensing module includes: An internal air pressure sensor is installed inside the battery compartment and connected to the control module. It is used to detect the air pressure inside the battery compartment and output the first air pressure detection signal to the control module. An external air pressure sensor is installed outside the battery compartment and connected to the control module. It is used to detect the air pressure outside the battery compartment and output the second air pressure detection signal to the control module.

6. The battery compartment exhaust detection system according to claim 1, characterized in that, Also includes: An alarm device, connected to the control module, is used to activate the alarm function when there is an abnormality in the exhaust, under the control of the control module.

7. The battery compartment exhaust detection system according to claim 1, characterized in that, The exhaust system includes: A combustible gas detector is installed inside the battery compartment and connected to the control module. It is used to detect the concentration of combustible gas inside the battery compartment and output a second detection signal to the control module so that the control module can activate the exhaust function when the second detection signal is valid.

8. The battery compartment exhaust detection system according to claim 1, characterized in that, The battery compartment is also provided with an exhaust channel and an air intake channel, both of which connect the inside of the battery compartment and the outside of the battery compartment to enable gas circulation between the inside and outside of the battery compartment. The exhaust system includes a fan, which is disposed in the exhaust channel, connected to the control module, and controlled by the control module.

9. The battery compartment exhaust detection system according to claim 8, characterized in that, The exhaust system includes: The first air damper is installed in the exhaust channel, connected to and controlled by the control module, and is used to close the exhaust channel and open it after the exhaust function is activated. And / or, a second air damper, disposed in the air intake passage, connected to and controlled by the control module, for closing the air intake passage and opening it after the exhaust function is enabled.

10. A battery, characterized in that, Includes a battery compartment and a battery compartment exhaust detection system as described in any one of claims 1-9.

11. The battery according to claim 10, characterized in that, The battery compartment is a marine lithium battery compartment.

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