CN213751331U - Battery assembly - Google Patents
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- CN213751331U CN213751331U CN202022604948.1U CN202022604948U CN213751331U CN 213751331 U CN213751331 U CN 213751331U CN 202022604948 U CN202022604948 U CN 202022604948U CN 213751331 U CN213751331 U CN 213751331U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The application discloses a battery pack. The battery assembly includes: a battery case; a battery disposed inside the battery housing; a smoke sensor disposed inside the battery housing; the smoke sensor is connected with the controller; the alarm is connected with the controller; the smoke sensor is used for detecting smoke information in the battery shell and transmitting the smoke information to the controller; the controller is used for transmitting a smoke alarm signal to the alarm according to the smoke information; the alarm is used for giving an alarm according to the smoke alarm signal. This application is through setting up smoke transducer, can the very first time discover whether phenomenons such as smoking, spontaneous combustion appear in the battery to in time report to the police, thereby prevent that the circumstances such as battery explosion from appearing.
Description
Technical Field
The present application relates to the field of battery technology, and more particularly, to a battery pack.
Background
With the development of social economy, the dependence of various industries on electric power is stronger and stronger, and the storage battery is widely popularized and applied in daily life of people. The lithium ion battery is a new generation secondary battery which appears after a lead-acid battery and a nickel-hydrogen battery, has the advantages of small volume, large capacity, small pollution and the like, is generally applied to portable equipment such as notebook computers, digital products and mobile communication products, is paid attention to the field of electric vehicles, and is expected to become one of main power sources of electric vehicles in the 21 st century.
The monitoring of the battery is an important part in the use process of the battery, the battery monitoring system can monitor the running state parameters of the battery in real time, effectively manage the battery to improve the use efficiency of the battery, prolong the service life of the battery, protect and control the battery when the battery is in a dangerous state, and timely give an alarm to a user.
The state monitoring of the battery is an important function in a battery management system, and the conventional state monitoring comprises voltage monitoring, current monitoring and temperature monitoring, so as to maintain the normal operation management of the battery. However, these conventional monitoring methods are not sufficient to effectively and timely detect the abnormal state of the battery from the viewpoint of safety protection.
Accordingly, a technical solution is desired to overcome or at least alleviate at least one of the above-mentioned drawbacks of the prior art.
SUMMERY OF THE UTILITY MODEL
It is an object of the present application to provide a battery assembly that overcomes or at least alleviates at least one of the above-mentioned disadvantages of the prior art.
To achieve the above object, the present application provides a battery pack including: a battery case; a battery disposed inside the battery housing; a smoke sensor disposed inside the battery housing; the smoke sensor is connected with the controller; the alarm is connected with the controller; the smoke sensor is used for detecting smoke information in the battery shell and transmitting the smoke information to the controller; the controller is used for transmitting a smoke alarm signal to the alarm according to the smoke information; the alarm is used for giving an alarm according to the smoke alarm signal.
Optionally, a pressure relief valve mounting hole is formed in the battery shell; the battery assembly further comprises a pressure relief valve; the pressure relief valve is used for relieving pressure of the battery shell when the pressure in the battery shell is larger than a preset threshold value.
Optionally, a cap valve mounting hole is arranged on the battery shell; the battery assembly further includes a cap valve.
Optionally, the battery case includes an upper cover and a case body, and the upper cover is connected to the case body.
Optionally, a sealant is disposed between the upper cover and the shell body.
Optionally, the battery assembly further comprises a humidity sensor connected to the controller, the humidity sensor being disposed at least one of near the cap valve mounting hole, near the relief valve mounting hole, and near a connection position of the upper cover and the case body; wherein the content of the first and second substances,
the humidity sensor is used for detecting humidity and transmitting the detected humidity information to the controller;
the controller is used for transmitting a humidity alarm signal to the alarm according to the humidity information;
and the alarm gives an alarm according to the humidity alarm signal.
Optionally, the battery assembly further comprises a leakage current detection circuit, which is disposed at a position of the charging port of the battery housing and is used for detecting whether there is leakage current; the leakage current detection circuit is connected with the controller and used for transmitting leakage current information to the controller; the controller is used for transmitting a leakage alarm signal to the alarm according to the leakage information; the alarm is used for giving an alarm according to the electric leakage alarm signal.
Optionally, the battery assembly further comprises a pressure sensor disposed inside the battery housing; the pressure sensor is connected with the controller; the pressure sensor is used for detecting the internal pressure of the battery shell and transmitting pressure information to the controller; the controller is used for transmitting a pressure alarm signal to the alarm according to the pressure information; the alarm is used for giving an alarm according to the pressure alarm signal.
Optionally, the battery assembly further comprises a temperature sensor disposed on the battery or on the battery housing, the temperature sensor being connected to the controller; the temperature sensor is used for detecting the temperature of the controller and transmitting temperature information to the controller; the controller is used for transmitting temperature alarm information to the alarm according to the temperature information; the alarm is used for giving an alarm according to the temperature alarm information.
Optionally, the battery assembly further comprises a display device, the display device is connected with the controller, and one or more of the smoke information, the humidity information, the temperature information, the leakage information and the pressure information obtained by the controller are transmitted to the display device; the display device is used for displaying one or more of the smoke information, the humidity information, the temperature information, the electric leakage information and the pressure information.
Optionally, the battery assembly further comprises: the fire extinguishing device is mounted on the battery shell and connected with the controller; the controller sends a control instruction to the fire extinguishing device according to the temperature information and/or the smoke information to enable the fire extinguishing device to work; the fire extinguishing device is used for providing fire extinguishing medium for the battery shell.
Optionally, the extinguishing medium is a fluorinated ketone.
The application also provides a battery pack emergency alarm method, which comprises the following steps: detecting whether smoke information exists in the battery shell or not; if smoke information is detected in the battery shell, the smoke information is transmitted to the controller; the controller transmits a smoke alarm signal to the alarm after receiving the smoke information; and the alarm gives a smoke alarm according to the smoke alarm signal.
Optionally, the battery pack emergency alarm method further includes: detecting whether the pressure inside the battery shell exceeds a preset threshold value; and if the pressure exceeds a preset threshold value, carrying out pressure relief.
Optionally, the battery pack emergency alarm method further includes: detecting humidity information of one or more positions near the cap valve mounting hole, the pressure relief valve mounting hole and the connecting position of the upper cover and the shell body; after receiving the humidity information, the controller transmits a humidity alarm signal to the alarm when the humidity information exceeds a humidity threshold value; and the alarm gives a humidity alarm according to the humidity alarm signal.
Optionally, the battery pack emergency alarm method further includes: detecting whether a charging port of a battery shell has leakage current or not, and if so, transmitting leakage current information to the controller; the controller transmits a leakage alarm signal to the alarm after receiving the leakage information; and the alarm is used for carrying out electric leakage alarm according to the electric leakage alarm signal.
Optionally, the battery pack emergency alarm method further includes: detecting pressure changes inside and/or outside the battery shell and transmitting pressure information to the controller; the controller transmits a pressure alarm signal to the alarm when receiving the pressure information and when the pressure information exceeds a preset pressure threshold; the alarm is used for giving a pressure alarm according to the pressure alarm signal.
Optionally, the battery pack emergency alarm method further includes: detecting the temperature of the battery shell and transmitting the temperature information to the controller; the controller transmits a temperature alarm signal to the alarm when receiving the temperature information and when the temperature information exceeds a preset temperature threshold; the alarm is used for giving a temperature alarm according to the temperature alarm signal.
Optionally, the battery pack emergency alarm method further includes: when the controller transmits one or two of a temperature alarm signal and a smoke alarm signal to the alarm, the controller controls the fire extinguishing device to work.
This application is through setting up smoke transducer, can the very first time discover whether phenomenons such as smoking, spontaneous combustion appear in the battery to in time report to the police, thereby prevent that the circumstances such as battery explosion from appearing.
Drawings
Fig. 1 is a schematic structural diagram of a battery module according to an embodiment of the present disclosure.
Fig. 2 is a schematic structural view of the inside of a battery case of the battery module according to the embodiment shown in fig. 1.
Fig. 3 is a schematic structural diagram of a battery protection circuit according to an embodiment of the present application.
1-a battery case; 2-a battery; 3-a smoke sensor; 4-a pressure relief valve; 5-a cap valve; 11-upper cover; 12-a shell body; 6-humidity sensitive sensors; 7-leakage current detection circuit; 8-a pressure sensor; 9-a temperature sensor; 10-a display device; 13-fire extinguishing device.
Detailed Description
In order to make the implementation objects, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the drawings in the embodiments of the present application. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are a subset of the embodiments in the present application and not all embodiments in the present application. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application and should not be construed as limiting the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application. Embodiments of the present application will be described in detail below with reference to the accompanying drawings.
In the description of the present application, it is to be understood that the terms "central," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner and are not to be considered limiting of the scope of the present application.
Fig. 1 is a schematic structural diagram of a battery module according to an embodiment of the present disclosure.
The battery assembly shown in fig. 1 and 2 comprises a battery case 1, a battery 2, a smoke sensor 3, a controller and an alarm, wherein the battery 2 is arranged inside the battery case 1; the smoke sensor 3 is arranged inside the battery shell; the smoke sensor is connected with the controller; the alarm is connected with the controller; wherein the content of the first and second substances,
the smoke sensor is used for detecting smoke information in the battery shell and transmitting the smoke information to the controller;
the controller is used for transmitting a smoke alarm signal to the alarm according to the smoke information;
the alarm is used for giving an alarm according to the smoke alarm signal.
This application is through setting up smoke transducer, can the very first time discover whether phenomenons such as smoking, spontaneous combustion appear in the battery to in time report to the police, thereby prevent that the circumstances such as battery explosion from appearing.
In the present embodiment, the smoke sensor 3 is disposed on the battery 2, it being understood that in other embodiments, it may also be disposed on the inner wall of the battery housing 1.
It will be appreciated that the alarm (not shown) may be located outside the battery housing, inside the battery housing or on the battery, and that the alarm may be an audible alarm, a light alarm or other type of alarm. It will be appreciated that when the alarm is one which requires visibility, the alarm is located externally of the battery housing.
It is understood that in the present application, the number of the batteries may be set by itself according to the need. For example, the battery may be one, two, or more. The batteries can be connected in series or in parallel.
Referring to fig. 1, in the present embodiment, a relief valve mounting hole is provided on the battery case; the battery assembly further comprises a pressure relief valve 4; the pressure relief valve 4 is used for relieving pressure of the battery shell when the pressure in the battery shell is larger than a preset threshold value.
When the battery in the battery shell expands or other situations occur, pressure in the battery shell can become large, and the explosion due to the pressure becomes more likely, so that the pressure relief valve is arranged, and when the pressure is too large, the pressure is relieved through the pressure relief valve.
It will be appreciated that the predetermined threshold may be set as desired.
Referring to fig. 1 and 2, in the present embodiment, a cap valve mounting hole is formed in the battery case; the battery assembly further comprises a cap valve 5.
Referring to fig. 1, in the present embodiment, a battery case 1 includes an upper cover 11 and a case body 12, and the upper cover 11 is connected to the case body 12.
In an alternative embodiment, the upper cover 11 is detachably connected with the case body 12, and the connection position is provided with a sealant.
Referring to fig. 1, in the present embodiment, the battery pack further includes a humidity sensor 6, the humidity sensor 6 being connected to the controller, the humidity sensor being provided at least one of near the cap valve mounting hole, near the relief valve mounting hole, and near the position where the upper cover is connected to the case body; wherein, the humidity sensor 6 is used for detecting humidity and transmitting the detected humidity information to the controller; the controller is used for transmitting a humidity alarm signal to the alarm according to the humidity information; and the alarm gives an alarm according to the humidity alarm signal.
It will be appreciated that the moisture sensitive sensor may be located elsewhere.
It is understood that the leakage of the battery may occur when the battery is used, however, the leakage cannot be found by a user due to the problem of the battery case.
In this embodiment, leakage may generally leak between the upper cover and the case body; leakage of the cap valve; leakage at the terminal: therefore, a humidity sensor is provided at the above position, so that the above problem can be solved.
Referring to fig. 1, in the present embodiment, the battery assembly further includes a leakage current detection circuit 7, and the leakage current detection circuit 7 is disposed at a position of a charging port of the battery case, and is used for detecting whether there is leakage current;
the leakage current detection circuit 7 is connected with the controller and used for transmitting leakage current information to the controller; the controller is used for transmitting a leakage alarm signal to the alarm according to the leakage information; the alarm is used for alarming according to the electric leakage alarm signal.
In this way, the battery can be prevented from leakage.
It is understood that the leakage current detection circuit 7 may be disposed in other positions.
In the present embodiment, the battery assembly further includes a pressure sensor 8, the pressure sensor 8 being disposed inside the battery case and outside the battery case; the pressure sensor 8 is connected with the controller; the pressure sensor 8 is used for detecting the internal pressure of the battery shell and/or the pressure transmitted to the pressure sensor after the battery shell is deformed (for example, the deformation of the battery shell caused by the expansion of the internal battery, and the like), and transmitting the pressure information to the controller; the controller is used for transmitting a pressure alarm signal to the alarm according to the pressure information; and the alarm is used for giving an alarm according to the pressure alarm signal.
It is understood that it is also possible to provide a pressure sensor only inside the battery housing or only outside the battery housing.
By means of the pressure sensor, it is possible to find out whether the battery in the battery case has a swelling problem or the like by detecting the pressure.
In one embodiment, the pressure sensor on the inside of the battery case is a ceramic pressure sensor and the pressure sensor mounted on the outside of the battery case is a piezoresistive pressure sensor. The pressure on the battery block is measured on the basis of the pressure of the battery directly acting on the front surface of the ceramic membrane, measured inside the case of the battery, and the pressure is detected on the basis of the mechanical deformation of the battery case, outside the battery case. The pressure sensor is connected with the controller, the controller performs data calculation processing on the pressure signal, the calculated data is transmitted to the alarm device through the communication bus, and the alarm device performs alarm output according to the pressure alarm condition.
It will be appreciated that in an alternative embodiment, the pressure sensor is connected to a pressure relief valve, in which case the pressure relief valve is an electromagnetic pressure relief valve that operates from pressure information transmitted by the pressure sensor. For example, a pressure threshold may be set, which is relieved when reached.
In the embodiment, the battery assembly further comprises a temperature sensor 9, the temperature sensor 9 is arranged on the battery or on the battery shell, and the temperature sensor 9 is connected with the controller; the temperature sensor 9 is used for detecting the temperature of the controller and transmitting the temperature information to the controller; the controller is used for transmitting temperature alarm information to the alarm according to the temperature information; the alarm is used for giving an alarm according to the temperature alarm information.
In this way, the temperature information of the battery pack can be grasped. On the other hand, the temperature information can be used for assisting in knowing whether the battery is self-ignited or not or whether other conditions occur.
In this embodiment, the battery pack further includes a display device 10, the display device 10 is connected to the controller, and one or more of the smoke information, the humidity information, the temperature information, the leakage information and the pressure information obtained by the controller are transmitted to the display device;
the display device is used for displaying one or more of the smoke information, the humidity information, the temperature information, the electric leakage information and the pressure information.
By adopting the mode, the user can master the battery condition in real time.
Referring to fig. 1, in the present embodiment, the battery assembly further includes a fire extinguishing device 13, and the fire extinguishing device 13 is installed in the battery housing and connected to the controller; the controller sends a control instruction to the fire extinguishing device according to the temperature information and the smoke information to enable the fire extinguishing device to work; the fire extinguishing device is used for supplying fire extinguishing medium to the battery shell.
In this embodiment, the fire extinguishing device is mounted on the battery.
The battery assembly further comprises a fire extinguishing device 13, and the fire extinguishing device 13 is arranged on the battery shell and is connected with the controller; the controller sends a control instruction to the fire extinguishing device according to the temperature information or the smoke information to enable the fire extinguishing device to work; the fire extinguishing device is used for supplying fire extinguishing medium to the battery shell.
It will be appreciated that a threshold value may be set and the fire suppression means operated when the temperature exceeds this threshold value or smoke is detected by the smoke sensor.
It will be appreciated that, to prevent false alarms, a threshold may be set for temperature at the same time, and based on smoke sensor detection, the fire suppression unit will operate when the threshold is met and smoke is present.
In this example, the extinguishing medium is a perfluorinated ketone.
In this embodiment, the alarm device may be an audio alarm device or a light alarm device.
In the embodiment, the voltage and the current of the battery are monitored in real time, so that the real-time state of charge (SOC) of the power battery pack is estimated, the residual electric quantity value of the power battery pack is obtained, the real-time state of the power battery pack is known in real time, a corresponding reasonable working mode is adjusted, when the power battery pack is charged, a capacity integration method is adopted, the SOC of the battery is estimated by accumulating the electric quantity of the battery during charging or discharging, the charging condition is monitored in real time, the charging is stopped at an overcharge critical point, the overcharge of the battery is prevented, and the battery is protected.
The temperature of the battery is monitored in real time through the temperature sensor and the smoke sensor, and whether smoke is generated or not is detected. When the difference between the highest temperature and the lowest temperature of each temperature acquisition point is higher than the alarm value or the charging is stopped when the temperature of the battery reaches 60 ℃, the alarm device sends alarm information and sends alarm sound.
In the present embodiment, a fire extinguishing apparatus is provided, in which fluorinated ketone is flushed, specifically, stored in a predetermined container in a sealed state and arranged in the battery pack, and when the temperature of the battery pack rises or smoke is generated, the sealed container is destroyed due to the rise in vapor pressure caused by the vaporization of the perfluorinated ketone, so that the vaporized perfluorinated ketone is sprayed to extinguish the fire, preventing the spread of fire caused by the thermal chain reaction of the battery.
In this embodiment, the fluorinated ketone is disposed in a container under a certain pressure, the container is provided with an air outlet, the air outlet is provided with an electromagnetic control valve, the electromagnetic control valve can open or close the air outlet, the electromagnetic control valve is connected with a controller, when the fire extinguishing apparatus needs to work, the controller gives a control signal to the electromagnetic control valve, the electromagnetic control valve opens the air outlet, and the fluorinated ketone in the container diffuses, so as to achieve the fire extinguishing mode.
The leakage current protection circuit provided by the application is composed of a leakage current detection electrode and a transistor. When the electrolyte of the battery leaks, leakage current can appear at the leaked battery part due to the conductivity of the electrolyte, whether the battery leaks or not can be judged through the detection of the leakage current, and when the leakage current of the battery is detected, a battery charging circuit is immediately disconnected and an alarm is given.
This application adds parts such as explosion-proof valve, explosion-proof piece and combination apron in battery inside or casing surface, and when battery internal pressure reached the setting value, these parts will break, release battery internal pressure in advance, prevent the battery explosion.
Referring to fig. 3, in this embodiment, the present disclosure may further detect the voltage and the current of the battery, for example, the voltage and the current of the battery are monitored in real time to estimate the real-time state of charge (SOC) of the power battery pack, obtain the residual electric quantity value of the power battery pack, know the real-time state of the power battery pack in real time, adjust a corresponding reasonable operation mode, and during the charging process of the power battery pack, adopt a capacity integration method to estimate the SOC of the battery by accumulating the electric quantity of the battery during charging or discharging, monitor the charging condition in real time, stop charging at an overcharge critical point, prevent overcharge thereof, and protect the battery.
The highest charging termination voltage of a single lithium battery is 4.2V, and the single lithium battery cannot be overcharged, otherwise, the battery is scrapped because too much lithium ions of the positive electrode are lost. When the lithium battery is charged, a special constant-current and constant-voltage charger is adopted, and the constant-current charging is firstly carried out until the voltage at two ends of the lithium battery is 4.2V, and then the lithium battery is switched into a constant-voltage charging mode; when the constant voltage charging current drops to 100mA, the charging should be stopped.
Referring to fig. 3, the protection circuit is composed of elements such as a control IC, MOs switch tubes, a fuse, a resistor, and a capacitor. Under normal conditions, the control IC outputs signals to control the MOs switching tube to be conducted, so that the battery cell is conducted with an external circuit, and when the voltage of the battery cell or the loop current exceeds a specified value, the control IC immediately controls the MOS tube to be turned off, so that the safety of the battery cell is protected. The control IC is internally provided with a high-precision voltage detection circuit and a multi-stage current detection circuit. The voltage detection circuit detects the charging voltage, and immediately enters an overcharge protection state once the charging voltage reaches a set threshold (usually 3.9V to 4.4V).
The control chip of the circuit is DW01 (or 312F), the MOS switch tube is 8205A, and as shown in FIG. 1, B + and B-are respectively the positive electrode and the negative electrode connected with the battery cell; p + and P-are respectively the positive electrode and the negative electrode output by the protection plate; t is a temperature resistance (NTC) port, and generally needs to be matched with a CPU of an electrical appliance to perform protection control. DWO1 is a lithium battery protection chip, which is internally provided with a high-precision voltage detection and time delay circuit, wherein the overcharge detection voltage is 3V, and the overcharge release voltage is 4.05V; the over-discharge detection voltage is 2.5V, and the over-discharge release voltage is 3.0V; the overcurrent detection voltage is 5V, and the short-circuit current detection voltage is 1.0V; DW01 allowed the maximum current output by the battery to be 3.3A.
During charging, when the battery is normally charged by a charger, the voltage at two ends of the battery core gradually increases along with the increase of the charging time, when the voltage of the battery core increases to 4.4V (generally called as overcharge protection voltage), the DW01 judges that the battery core is in an overcharge state, the voltage of the pin III is immediately reduced to 0V, the Q2 in 8205A is cut off because the pin IV is in a low level, and at the moment, the B pole of the battery core and the P-end of the protection circuit are in a disconnection state and are kept, namely, a charging loop of the battery core is cut off, and charging is stopped.
When the P + and P-terminals of the protection circuit are connected with the discharging load, although Q2 is cut off, the positive direction of the diode inside the protection circuit is the same as the current direction of the discharging loop, so the protection circuit can still discharge the load. When the voltage at the two ends of the battery cell is lower than 4.3V (generally called as overcharge protection recovery voltage), the DW01 exits from the overcharge protection state, the pin outputs a high level again, the Q2 is conducted, namely the B-end of the battery cell is connected with the P-end of the protection circuit again, and the battery cell can be charged and discharged normally.
The application also provides a battery pack emergency alarm method, which comprises the following steps:
detecting whether smoke information exists in the battery shell or not;
if smoke information is detected in the battery shell, the smoke information is transmitted to the controller;
the controller transmits a smoke alarm signal to the alarm after receiving the smoke information;
and the alarm gives a smoke alarm according to the smoke alarm signal.
In this embodiment, the emergency alarm method for a battery pack further includes: detecting whether the pressure inside the battery shell exceeds a preset threshold value; and if the pressure exceeds a preset threshold value, carrying out pressure relief.
In this embodiment, the emergency alarm method for a battery pack further includes:
detecting humidity information of one or more positions near the cap valve mounting hole, the pressure relief valve mounting hole and the connecting position of the upper cover and the shell body; after receiving the humidity information, the controller transmits a humidity alarm signal to the alarm when the humidity information exceeds a humidity threshold value; and the alarm gives a humidity alarm according to the humidity alarm signal.
In this embodiment, the emergency alarm method for a battery pack further includes:
detecting whether a charging port of the battery shell has leakage current or not, and if so, transmitting leakage current information to the controller; the controller transmits a leakage alarm signal to the alarm after receiving the leakage information; the alarm is used for carrying out electric leakage alarm according to the electric leakage alarm signal.
In this embodiment, the emergency alarm method for a battery pack further includes: detecting pressure changes inside and/or outside the battery shell and transmitting pressure information to the controller; the controller transmits a pressure alarm signal to the alarm when receiving the pressure information and when the pressure information exceeds a preset pressure threshold value; the alarm is used for giving a pressure alarm according to the pressure alarm signal.
In this embodiment, the emergency alarm method for a battery pack further includes: detecting the temperature of the battery shell and transmitting the temperature information to the controller; the controller transmits a temperature alarm signal to the alarm when receiving the temperature information and when the temperature information exceeds a preset temperature threshold; the alarm is used for giving a temperature alarm according to the temperature alarm signal.
In this embodiment, the emergency alarm method for a battery pack further includes:
when the controller transmits one or two of a temperature alarm signal and a smoke alarm signal to the alarm, the controller controls the fire extinguishing device to work.
By the method, the battery can be guaranteed to be processed or the user can be reminded in time when the conditions that the user is possibly endangered by electric leakage, explosion and the like occur to the greatest extent, and therefore the user is prevented from being injured.
Finally, it should be pointed out that: the above examples are only for illustrating the technical solutions of the present application, and are not limited thereto. Although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.
Claims (9)
1. A battery assembly, comprising:
a battery case (1);
a battery (2), the battery (2) being disposed inside the battery housing (1);
a smoke sensor (3), said smoke sensor (3) being disposed inside said battery housing;
the smoke sensor is connected with the controller;
the alarm is connected with the controller; wherein the content of the first and second substances,
the smoke sensor is used for detecting smoke information in the battery shell and transmitting the smoke information to the controller;
the controller is used for transmitting a smoke alarm signal to the alarm according to the smoke information;
the alarm is used for giving an alarm according to the smoke alarm signal.
2. The battery pack of claim 1, wherein the battery housing is provided with a relief valve mounting hole;
the battery assembly further comprises a pressure relief valve (4); wherein the content of the first and second substances,
the pressure relief valve (4) is used for relieving pressure of the battery shell when the pressure in the battery shell is larger than a preset threshold value.
3. The battery assembly according to claim 2, wherein the battery case (1) comprises an upper cover (11) and a case body (12), the upper cover (11) being connected to the case body (12).
4. The battery pack according to claim 3, further comprising a humidity sensor (6), the humidity sensor (6) being connected to the controller, the humidity sensor being provided at least one of near the relief valve mounting hole and near a position where the upper cover is connected to the case body; wherein the content of the first and second substances,
the humidity sensor (6) is used for detecting humidity and transmitting the detected humidity information to the controller;
the controller is used for transmitting a humidity alarm signal to the alarm according to the humidity information;
and the alarm gives an alarm according to the humidity alarm signal.
5. The battery pack according to claim 4, further comprising a leakage current detection circuit (7), wherein the leakage current detection circuit (7) is provided at a position of a charging port of the battery case for detecting whether there is a leakage current thereat;
the leakage current detection circuit (7) is connected with the controller and used for transmitting leakage current information to the controller;
the controller is used for transmitting a leakage alarm signal to the alarm according to the leakage information;
the alarm is used for giving an alarm according to the electric leakage alarm signal.
6. A battery assembly according to claim 5, characterized in that the battery assembly further comprises a pressure sensor (8), the pressure sensor (8) being arranged inside the battery housing and/or outside the battery housing;
the pressure sensor (8) is connected with the controller; wherein the content of the first and second substances,
the pressure sensor (8) is used for detecting the internal pressure of the battery shell and/or the pressure transmitted to the pressure sensor after the battery shell is deformed, and transmitting pressure information to the controller;
the controller is used for transmitting a pressure alarm signal to the alarm according to the pressure information;
the alarm is used for giving an alarm according to the pressure alarm signal.
7. The battery assembly of claim 6, further comprising a temperature sensor (9), wherein the temperature sensor (9) is disposed on the battery or on the battery housing, wherein the temperature sensor (9) is connected to the controller; wherein the content of the first and second substances,
the temperature sensor (9) is used for detecting the temperature of the controller and transmitting temperature information to the controller;
the controller is used for transmitting temperature alarm information to the alarm according to the temperature information;
the alarm is used for giving an alarm according to the temperature alarm information.
8. The battery pack according to claim 7, further comprising a display device (10), wherein the display device (10) is connected with the controller, and one or more of the smoke information, the humidity information, the temperature information, the leakage information, and the pressure information obtained by the controller are transmitted to the display device;
the display device is used for displaying one or more of the smoke information, the humidity information, the temperature information, the electric leakage information and the pressure information.
9. The battery assembly of claim 8, further comprising:
the fire extinguishing device (13), the said fire extinguishing device (13) is installed in said battery shell and connected with said controller; wherein the content of the first and second substances,
the controller sends a control instruction to the fire extinguishing device according to the temperature information and/or the smoke information to enable the fire extinguishing device to work;
the fire extinguishing device is used for providing fire extinguishing medium for the battery shell.
Priority Applications (1)
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| CN202022604948.1U CN213751331U (en) | 2020-11-12 | 2020-11-12 | Battery assembly |
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| CN202022604948.1U CN213751331U (en) | 2020-11-12 | 2020-11-12 | Battery assembly |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112421142A (en) * | 2020-11-12 | 2021-02-26 | 中国海洋大学 | Battery assembly and emergency alarm method for battery assembly |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112421142A (en) * | 2020-11-12 | 2021-02-26 | 中国海洋大学 | Battery assembly and emergency alarm method for battery assembly |
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