Portable power supply with safety protection function

Abstract

The utility model discloses a portable power supply with a safety protection function, which comprises a lithium ion battery, a controller and a water-based container used for accommodating a high-pressure water base, the water-based container is fixedly connected with the lithium ion battery, the lithium ion battery comprises a shell with an inner cavity and a battery cell arranged in the shell, and the inner cavity of the shell is communicated with the controller. The water-based container is communicated with the interior of the shell through a conveying pipe, an electric control valve is arranged on the conveying pipe, a temperature sensor used for sensing the temperature of the battery cell and / or a smoke sensor used for sensing smoke are / is arranged in the shell, and the temperature sensor and / or the smoke sensor are / is electrically connected with the controller and can transmit signals to the controller. And when the controller receives an abnormal signal, the controller controls the electric control valve to be opened. The utility model provides a portable power supply with a safety protection function, which can timely process a lithium battery pack when a battery cell is in thermal runaway or generates smoke so as to reduce the safety risk coefficient.

Description

Technical Field

[0001] The utility model belongs to the technical field of lithium batteries and relates to a lithium battery pack, in particular to a portable power source with a safety protection function. Background Art

[0002] Lithium batteries are a type of battery that uses lithium metal or lithium alloy as positive and negative electrode materials and a non-aqueous electrolyte solution. Due to the extremely active chemical properties of lithium metal, the processing, storage, and use of lithium metal have very high environmental requirements.

[0003] For example, a lithium battery module with publication number CN206574769U includes a battery module, a PCBA board, a box and a cover; the battery module includes a battery cell, a plastic bracket, a copper busbar, foam, a metal bracket and a protective cover; the plastic bracket is engaged with the battery cell, and a plurality of battery cells are connected into a battery cell string by a copper busbar, and foam is arranged on two sides of a battery cell group consisting of a plurality of battery cell strings, and metal brackets are arranged on the other two sides of the battery cell group and on the outside of the foam; a protective cover is arranged on the upper end of the battery cell group; the PCBA board is located above the battery module, and the battery cell is connected to the PCBA board through leads; the PCBA board and the battery module are both arranged in the box; the cover is fixedly arranged on the top of the box; a charging port is arranged on one side panel of the box, and a discharge port is arranged on the other side panel.

[0004] The lithium-ion battery disclosed in the above patent is an independent battery pack. During use, the lithium-ion battery may have abnormalities, such as thermal runaway of the internal battery cell. When the battery cell continues to have thermal runaway, it is easy to catch fire and produce smoke. The abnormalities of the existing lithium-ion battery need to be handled manually, but the internal abnormalities of the lithium-ion battery cannot be discovered by humans in time, resulting in the inability to handle the lithium-ion battery in time, increasing the safety risk factor of the lithium-ion battery. Utility Model Content

[0005] The utility model provides a portable power supply with a safety protection function, which can timely process the lithium battery pack when thermal runaway occurs in the battery core or smoke is generated, thereby reducing the safety risk factor.

[0006] The technical solution adopted by the utility model to solve the above technical problems is: a portable power supply with a safety protection function, comprising a lithium-ion battery, a controller and a water-based container for accommodating high-pressure water, the water-based container is fixedly connected to the lithium-ion battery, the lithium-ion battery comprises an outer shell with an inner cavity and a battery cell installed in the outer shell, the water-based container is connected to the outer shell through a delivery pipe, the delivery pipe is provided with an electric control valve, the outer shell is provided with a temperature sensor for sensing the temperature of the battery cell and / or a smoke sensor for sensing smoke, the temperature sensor and / or the smoke sensor are electrically connected to the controller and can transmit signals to the controller, and when the controller receives an abnormal signal, the controller controls the electric control valve to open.

[0007] A further preferred technical solution of the utility model is: a groove is provided in the water-based container, the lithium-ion battery is inserted into the groove, an electromagnetic lock is fixedly connected to the bottom surface of the outer shell and can be attracted to the bottom surface of the groove, when the electromagnetic lock is energized, the magnetism of the electromagnetic lock disappears, the delivery pipe includes a circular tube 1 fixedly connected to the water-based container and a circular tube 2 fixedly connected to the outer shell, the circular tube 1 and the circular tube 2 are connected by a connecting sleeve, the connecting sleeve includes two arc plates, the two arc plates are rotatably connected, a number of protrusions are fixedly connected to the inner walls of the two arc plates, the surfaces of the circular tube 1 and the circular tube 2 are provided with a card groove, when the circular tube 1 and the circular tube 2 are connected together by the connecting sleeve, the protrusion is inserted into the card groove, and the card groove is an annular groove.

[0008] A further preferred technical solution of the utility model is that: magnetic sheets are arranged on the two arc-shaped plates, and the two magnetic sheets can be attracted to each other.

[0009] A further preferred technical solution of the utility model is: a switch for controlling the electromagnetic lock is provided on the top surface of the shell, and when the switch is turned on, the electromagnetic lock is energized.

[0010] A further preferred technical solution of the utility model is: a convex strip protruding outward is provided on the shell, and a limiting groove used in conjunction with the convex strip is provided on the inner side wall of the groove.

[0011] A further preferred technical solution of the utility model is: a vibration sensor is fixedly connected to the inner bottom surface of the shell, and the vibration sensor is connected to the controller. When the vibration frequency of the lithium-ion battery exceeds the set vibration frequency, the controller cuts off the output voltage.

[0012] A further preferred technical solution of the utility model is: a temperature sensor and a smoke sensor are provided in the shell, a plurality of partitions for separating the battery cells are fixedly connected in the shell, a temperature sensor is fixedly connected to the top surface of each partition, and when any temperature sensor senses thermal runaway of the battery cell and transmits a signal to the controller, the controller controls the electronically controlled valve to open.

[0013] A further preferred technical solution of the utility model is: the smoke sensor is fixedly connected to the inner top surface of the housing, and when the smoke sensor senses smoke and transmits a signal to the controller, the controller controls the electric-controlled valve to open.

[0014] A further preferred technical solution of the utility model is: the controller is fixedly connected to the bottom surface of the bottommost spacer, the spacer is provided with a mounting groove, and the controller is located in the mounting groove.

[0015] A further preferred technical solution of the utility model is that an air outlet is provided on the top surface of the shell.

[0016] Compared with the prior art, the advantage of the utility model is that when only a temperature sensor is provided in the outer shell, thermal runaway occurs in the battery cell, the temperature sensor senses the temperature and transmits a signal to the controller, and the controller controls the electric control valve to open, at which time the water in the water-based container can enter the outer shell for cooling; when only a smoke sensor is provided in the outer shell, when the battery cell catches fire and produces smoke, the smoke sensor senses the smoke and transmits a signal to the controller, and the controller controls the electric control valve to open, at which time the battery cell can be extinguished; when the temperature sensor and the smoke sensor exist at the same time, the temperature of the battery cell and the smoke in the outer shell can be monitored in real time, and the sensor can transmit the abnormal data to the controller in time after receiving the data, and at this time the controller can quickly control the electric control valve to open so as to process the battery cell in time, thereby effectively reducing the safety risk factor of the lithium-ion battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be described in further detail below in conjunction with the accompanying drawings and preferred embodiments, but those skilled in the art will appreciate that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be used as a limitation on the scope of the present invention. In addition, unless otherwise specified, the drawings are only schematically representing the composition or structure of the described object and may contain exaggerated displays, and the drawings are not necessarily drawn to scale.

[0018] Figure 1 It is the overall structure diagram of the utility model;

[0019] Figure 2 The explosion of the utility model Figure 1 ;

[0020] Figure 3 The explosion of the utility model Figure 2 ;

[0021] Figure 4 It is a cross-sectional view of the utility model;

[0022] Figure 5 For this utility model Figure 4 The enlarged view of point A in the middle;

[0023] Figure 6 For this utility model Figure 4 Enlarged view of point B in the middle.

[0024] In the figure: 1. lithium-ion battery; 101. shell; 102. spacer; 103. battery cell; 2. water-based container; 3. air outlet; 4. round tube one; 5. round tube two; 6. arc plate; 7. limit groove; 8. groove; 9. convex strip; 10. electromagnetic lock; 11. controller; 12. temperature sensor; 13. electric control valve; 14. bump; 15. slot; 16. smoke sensor; 17. switch; 18. mounting slot; 19. vibration sensor. DETAILED DESCRIPTION

[0025] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It will be appreciated by those skilled in the art that these descriptions are merely illustrative and exemplary and should not be construed as limiting the scope of protection of the present invention.

[0026] It should be noted that like reference numerals denote similar items in the following drawings, and thus, once an item is defined in one drawing, it may not be further defined or explained in subsequent drawings.

[0027] Figure 2-Figure 6 As shown, a portable power supply with a safety protection function includes a lithium-ion battery 1, a controller 11 and a water-based container 2 for containing high-pressure water. The controller 11 is a BMS circuit board. The water-based container 2 is fixedly connected to the lithium-ion battery 1. The lithium-ion battery 1 includes a shell 101 with an inner cavity and a battery cell 103 installed in the shell 101. The shell 101 is made of aluminum. The water-based container 2 is connected to the shell 101 through a delivery pipe. The delivery pipe is provided with an electric control valve 13, which is connected to the water outlet of the delivery pipe. A temperature sensor 12 for sensing the temperature of the battery cell 103 and / or a smoke sensor 16 for sensing smoke are provided in the shell 101. The temperature sensor 12 and / or the smoke sensor 16 are electrically connected to the controller 11 and can transmit data to the controller 11. When the controller 11 receives abnormal data, the controller 11 controls the electric control valve 13 to open. An air outlet 3 is provided on the top surface of the shell 101. When the battery cell 103 catches fire, smoke can float out from the air outlet 3 to serve as a warning.

[0028] Figure 1-Figure 6As shown, when only the temperature sensor 12 is provided in the housing 101, the battery cell 103 has thermal runaway, the temperature sensor 12 transmits abnormal data to the controller 11, the controller 11 receives and processes the data, when the data is abnormal, the controller 11 controls the electric control valve 13 to open, at this time, the high-pressure water in the water-based container enters the housing 101 through the delivery pipe to cool the battery cell 103 in the housing 101, so as to achieve the purpose of timely handling the thermal runaway of the battery cell 103, or when only the smoke sensor 16 is provided in the housing 101, the battery cell 103 catches fire and generates smoke due to thermal runaway, the smoke sensor 16 senses the smoke and transmits the data to the controller 11, the controller 11 receives and processes the data, when the data is abnormal, the controller 11 controls the electric control valve 13 to open, at this time, the high-pressure water in the water-based container enters the housing 101 through the delivery pipe to cool the battery cell 103 in the housing 101, so as to achieve the purpose of timely handling the thermal runaway of the battery cell 103. When the electric control valve 13 is opened, the high-pressure water in the water-based container enters the housing 101 to extinguish the fire of the battery cell 103. When the housing 101 is provided with a smoke sensor 16 and a temperature sensor 12, when the battery cell 103 catches fire, either the temperature sensor 12 or the smoke sensor 16 detects an abnormality and transmits the data to the controller 11. The controller 11 receives and processes the data. When the data is abnormal, the controller 11 controls the electric control valve 13 to open. At this time, the high-pressure water in the water-based container enters the housing 101 to extinguish the fire of the battery cell 103. This design can effectively ensure that when the temperature of the lithium-ion battery 1 is too high or it catches fire, the water-based container 2 can process the lithium-ion battery 1, thereby effectively reducing the safety risk factor of the lithium-ion battery 1.

[0029] Figure 2-Figure 6 As shown, a temperature sensor 12 and a smoke sensor 16 are provided in the housing 101. The temperature sensor 12 and the smoke sensor 16 are arranged in the housing 101. A plurality of partitions 102 for separating the battery cells 103 are fixedly connected in the housing 101. A temperature sensor 12 is fixedly connected to the top surface of each partition 102. When any temperature sensor 12 senses that the temperature of the battery cell 103 is abnormal and transmits data to the controller 11, the controller 11 controls the electronically controlled valve 13 to open. Therefore, when thermal runaway occurs in the battery cell 103 between any two partitions 102, the temperature sensor 12 in the layer of battery cells 103 can better sense the temperature and then send it to the controller 11. This design effectively improves the sensitivity of the temperature sensor 12, thereby improving the timeliness of the water-based container 2 in handling abnormal lithium-ion batteries 1.

[0030] Figure 2-Figure 6As shown, the smoke sensor 16 is fixedly connected to the top surface of the outer shell 101. Therefore, when the battery cell 103 has thermal runaway and the temperature sensor 12 fails to detect it in time, causing the battery cell 103 to catch fire, the smoke floats upward, and the smoke sensor 16 on the top surface of the outer shell 101 can better detect the smoke and transmit the data to the controller 11. At this time, the controller 11 can timely control the electric control valve 13 to open, and the high-pressure water in the water-based container 2 enters the outer shell 101 to extinguish the battery cell 103. This design further improves the timeliness of the processing of the water-based container 2.

[0031] Figure 2-Figure 4 As shown, a vibration sensor 19 is fixedly connected to the inner bottom surface of the housing 101, and the vibration sensor 19 is connected to the controller 11. When the vibration frequency of the lithium-ion battery 1 exceeds the set vibration frequency, the vibration sensor 19 can transmit the sensing data to the controller 11 in time, and the controller 11 analyzes the data and cuts off the output voltage, thereby achieving the purpose of timely processing.

[0032] Figure 2-Figure 6 As shown, the controller 11 is fixedly connected to the bottom surface of the bottommost partition 102, and the controller 11 is in a sealed state, which is dustproof and waterproof, and an installation groove 18 is provided on the partition 102, and the controller 11 is located in the installation groove 18. This design can further prevent water from entering the controller 11 when the battery cell 103 is extinguished or cooled, thereby effectively protecting the controller 11.

[0033] Figure 2-Figure 6 As shown, a groove 8 is provided in the water-based container 2, and the lithium-ion battery 1 is inserted into the groove 8, so the water-based container 2 is sleeved on the outside of the lithium-ion battery 1, and an electromagnetic lock 10 that can be mutually attracted with the inner bottom surface of the groove 8 is fixedly connected to the bottom surface of the outer shell 101, and a switch 17 for controlling the electromagnetic lock 10 is provided on the top surface of the outer shell 101. Therefore, when the water-based container 2 needs to be disassembled, the switch 17 is turned off, and the electromagnetic lock 10 is energized at this time, and the magnetism of the electromagnetic lock 10 disappears. The lithium-ion battery 1 can be further pulled out to complete the disassembly of the water-based container 2. This design enables the water-based container 2 to be used not only on the lithium-ion battery 1, but also expands the scope of application of the water-based container 2.

[0034] Figure 1-Figure 6As shown, the delivery pipe includes a circular tube 1 4 fixedly connected to the water-based container 2 and a circular tube 2 5 fixedly connected to the outer shell 101, and the circular tube 1 4 and the circular tube 2 5 are connected by a connecting sleeve, and the connecting sleeve includes two arc-shaped plates 6, and the two arc-shaped plates 6 are rotatably connected, and a plurality of protrusions 14 are fixedly connected on the inner walls of the two arc-shaped plates 6. The surfaces of the circular tube 1 4 and the circular tube 2 5 are provided with a groove 15, and the groove 15 is an annular groove 8. When the circular tube 1 4 and the circular tube 2 5 are connected together by the connecting sleeve, the protrusion 14 is inserted into the groove 15, so as to prevent the two arc-shaped plates 6 from sliding on the circular tube 1 4 and the circular tube 2 5, thereby playing a role of limiting. The two arc-shaped plates 6 are provided with magnetic sheets, and the two magnetic sheets can be attracted to each other.

[0035] Figure 2-Figure 6 As shown, when the water-based container 2 is disassembled, the two arc plates 6 are rotated, and the magnetic sheets on the two arc plates 6 are separated, and the arc plates 6 are opened. At the same time, the protrusion 14 is separated from the groove 8, and the fixation between the circular tube 1 4 and the circular tube 2 is released. The electromagnetic lock 10 is further opened so that the magnetism of the electromagnetic lock 10 disappears and the water-based container 2 is removed. This design plays the role of connecting the circular tube 1 4 and the circular tube 2 5.

[0036] Figure 2-Figure 6 As shown, the outer shell 101 is provided with a convex strip 9 protruding outward, and the inner wall of the groove 8 is provided with a limiting groove 7 used in conjunction with the convex strip 9. Therefore, when the lithium-ion battery 1 is located in the groove 8, the convex strip 9 is inserted into the limiting groove 7, thereby preventing the lithium-ion battery 1 from rotating in the groove 8 during use. This design limits the range of movement of the lithium-ion battery 1.

[0037] The portable power supply with safety protection function provided by the utility model is introduced above. The principle and implementation method of the utility model are described in this article using specific examples. The description of the above embodiments is only used to help understand the utility model and its core idea. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A portable power source with safety protection function, characterized in that: The invention comprises a lithium-ion battery, a controller and a water-based container for containing high-pressure water, wherein the water-based container is fixedly connected to the lithium-ion battery, the lithium-ion battery comprises an outer shell with an inner cavity and an electric core installed in the outer shell, the water-based container is connected to the outer shell through a delivery pipe, the delivery pipe is provided with an electric-controlled valve, the outer shell is provided with a temperature sensor for sensing the temperature of the electric core and / or a smoke sensor for sensing smoke, the temperature sensor and / or the smoke sensor are electrically connected to the controller and can transmit signals to the controller, and when the controller receives an abnormal signal, the controller controls the electric-controlled valve to open.

2. The portable power supply with safety protection function according to claim 1, characterized in that: The water-based container is provided with a groove, the lithium-ion battery is inserted into the groove, the bottom surface of the outer shell is fixedly connected with an electromagnetic lock which can be attracted to the bottom surface of the groove, when the electromagnetic lock is powered on, the magnetism of the electromagnetic lock disappears, the delivery pipe comprises a circular tube 1 fixedly connected to the water-based container and a circular tube 2 fixedly connected to the outer shell, the circular tube 1 and the circular tube 2 are connected by a connecting sleeve, the connecting sleeve comprises two arc plates, the two arc plates are rotatably connected, a number of protrusions are fixedly connected on the inner walls of the two arc plates, the surfaces of the circular tube 1 and the circular tube 2 are provided with a card groove, when the circular tube 1 and the circular tube 2 are connected together by the connecting sleeve, the protrusion is inserted into the card groove, and the card groove is an annular groove.

3. The portable power supply with safety protection function according to claim 2, characterized in that: The two arc-shaped plates are both provided with magnetic sheets, and the two magnetic sheets can be attracted to each other.

4. The portable power supply with safety protection function according to claim 2, characterized in that: A switch for controlling the electromagnetic lock is arranged on the top surface of the shell. When the switch is turned on, the electromagnetic lock is energized.

5. The portable power supply with safety protection function according to claim 2, characterized in that: The outer shell is provided with a convex strip protruding outward, and the inner side wall of the groove is provided with a limiting groove used in conjunction with the convex strip.

6. The portable power source with safety protection function according to claim 1, characterized in that: A vibration sensor is fixedly connected to the inner bottom surface of the shell, and the vibration sensor is connected to the controller. When the vibration frequency of the lithium-ion battery exceeds the set vibration frequency, the controller cuts off the output voltage.

7. The portable power supply with safety protection function according to claim 1, characterized in that: A temperature sensor and a smoke sensor are provided in the shell. A plurality of partitions for separating battery cells are fixedly connected in the shell. A temperature sensor is fixedly connected to the top surface of each partition. When any temperature sensor senses thermal runaway of the battery cell and transmits a signal to the controller, the controller controls the electronically controlled valve to open.

8. The portable power source with safety protection function according to claim 1, characterized in that: The smoke sensor is fixedly connected to the inner top surface of the housing. When the smoke sensor senses smoke and transmits a signal to the controller, the controller controls the electric control valve to open.

9. The portable power source with safety protection function according to claim 7, characterized in that: The controller is fixedly connected to the bottom surface of the bottommost spacer, and a mounting groove is provided on the spacer, and the controller is located in the mounting groove.

10. The portable power source with safety protection function according to claim 1, characterized in that: An air outlet is provided on the top surface of the shell.

Images