A lithium battery risk management device

Abstract

The utility model discloses a lithium battery risk management device, which relates to the technical field of lithium batteries. A battery box is equipped with at least one group of heat-absorbing partition components for absorbing heat and separating the battery box into at least two groups of closed compartments for accommodating battery bodies, and the heat-absorbing partition components are connected to each other. A processing module, a sensing module and a control module are installed on the battery box. A group of processing modules and sensing modules are installed in each compartment. The processing module and the sensing module are both electrically connected to the control module. After sensing abnormal information, the sensing module transmits the abnormal information to the control module, and the control module transmits the processed information to the processing module. The heat-absorbing partition plate of the heat-absorbing partition component not only acts as a partition but also transmits heat to the first heat-conducting plate of the heat-conducting component. The heat is exported from the battery box through the first heat-conducting plates connected to each other through the second heat-conducting member, thereby reducing the aging of the battery body, increasing the service life of the battery body, and reducing the risk of the battery body.

Description

Technical Field

[0001] The utility model belongs to the technical field of lithium batteries, and in particular relates to a lithium battery risk treatment device. Background Art

[0002] In recent years, driven by policies, my country's new energy vehicle industry has developed at an accelerated pace, and the power battery companies in the market are also developing rapidly. At present, the characteristics of lithium batteries determine the spontaneous combustion and explosion of lithium batteries, especially some small battery manufacturers cannot guarantee the battery quality, which poses a safety hazard to the battery itself, vehicles and personnel.

[0003] A Chinese patent with publication number "CN206822988U" discloses a fire extinguishing system for a car lithium battery box, including a fire detection device and a fire extinguishing device for extinguishing a fire in the battery box. The fire detection device is installed in the battery box. The fire extinguishing device includes a fire extinguishing agent container, a driving container, a triggering device, and a fire extinguishing agent release device that is opened at a constant pressure or on demand. The fire extinguishing agent release device is connected to a fire extinguishing agent release port opened on the fire extinguishing agent container; the fire detection device is connected to the triggering device.

[0004] As mentioned above, the automotive lithium battery risk management device in the prior art is mainly used to deal with fires that occur when the automotive lithium battery is in an out-of-control state, and to extinguish the fire through an external fire extinguishing device. However, there are still certain shortcomings. For example, automotive lithium batteries are generally composed of multiple groups of battery modules. When a bad battery module has a problem, it will cause collateral damage to the good battery modules. Therefore, the losses cannot be reduced on the basis of the treatment. Secondly, the battery box of the traditional lithium battery lacks a heat dissipation structure and cannot dissipate heat in the lithium battery. Over time, it is easy to accelerate battery aging and increase the risk of use. Utility Model Content

[0005] In view of the problems mentioned in the background technology, the purpose of the present invention is to provide a lithium battery risk management device to solve the problems mentioned in the background technology.

[0006] The above technical objectives of the utility model are achieved through the following technical solutions:

[0007] A lithium battery risk treatment device comprises a battery box, wherein at least one group of heat-absorbing partition components for absorbing heat and separating the battery box into at least two groups of closed compartments for accommodating battery bodies is installed in the battery box, and the heat-absorbing partition components are connected to each other; a processing module, a sensing module and a control module are installed on the battery box, and a group of processing modules and sensing modules are installed in each compartment, and the processing module and the sensing module are both electrically connected to the control module, and the sensing module transmits the abnormal information to the control module after sensing the abnormal information, and the control module transmits the processed information to the processing module;

[0008] A partition plate is installed in the battery box, which divides the battery box into an upper installation bin and at least two groups of partition bins at the bottom. A release pipe is fixedly installed in the installation bin, and the top of the heat-absorbing partition plate is fixedly connected to the bottom of the partition plate. The release pipe is connected to the partition bin through an exhaust pipe, and a one-way valve is installed on the exhaust pipe. One end of the release pipe passes through the bin wall of the installation bin, and a filter device is fixedly installed on the protruding end of the release pipe, and an exhaust port is provided at the end of the filter device away from the release pipe.

[0009] As a preferred technical solution, the heat absorption partition assembly includes a heat absorption partition plate and a first heat conduction assembly, the heat absorption partition plate is fixedly connected to the first heat conduction assembly, and the first heat conduction assembly is interconnected and both are installed on the battery box.

[0010] As a preferred technical solution, the first heat-conducting component includes a first heat-conducting plate, and the heat-absorbing partition plate is installed on the first heat-conducting plate.

[0011] As a preferred technical solution, the first heat conducting plate is installed at the bottom end of the battery box, and the first heat conducting plate has a portion extending out of the battery box and located below the battery box, and the second heat conducting member is installed at the extended end of the first heat conducting plate.

[0012] As a preferred technical solution, the second heat-conducting member includes a plurality of groups of heat sinks, and a ventilation channel is formed between two adjacent groups of heat sinks.

[0013] As a preferred technical solution, the sensing module includes a first sensor, and the sensing end of the first sensor extends into the compartment.

[0014] As a preferred technical solution, the processing module includes a pressure relief valve and / or an electric-controlled fire extinguisher, the release end of the electric-controlled fire extinguisher extends into the compartment, and the pressure relief valve is installed on the battery body.

[0015] In summary, the utility model mainly has the following beneficial effects:

[0016] The heat-absorbing partition plate of the heat-absorbing partition assembly not only acts as a partition but also transfers heat to the first heat-conducting plate of the heat-conducting assembly. The heat is conducted out of the battery box through the interconnected first heat-conducting plates via the second heat-conducting component, thereby reducing the aging of the battery body, increasing the service life of the battery body 7, and reducing the risk of the battery body.

[0017] The heat-absorbing partition plate separates the space in the battery box at the bottom of the partition plate into separate compartments to accommodate the battery bodies. When a group of battery bodies is unbalanced internally, the first sensor detects a change in temperature in the compartment and transmits the abnormal information to the control module. The control module controls the alarm to sound and controls the electronic fire extinguisher to cool down. The first sensor detects a change in air pressure in the compartment and transmits the abnormal information to the control module. The control module controls the pressure relief valve to open. If a fire occurs, the control module synchronously controls the electronic fire extinguisher to extinguish the fire. At the same time, the combustible gas enters the release pipe through the exhaust pipe under pressure, and one end of the release pipe can filter the combustible gas by connecting the filter device, and then discharge it through the exhaust port after filtering to ensure that the gas is safely released into the air. By adding a one-way valve at the connection between the exhaust pipe and the release pipe, combustible gas can be prevented from entering other storage compartments. A separate storage compartment ensures that the unbalanced battery body is not associated with other battery modules, prevents other battery modules from being damaged, and reduces losses. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model;

[0019] Figure 2 It is a schematic diagram of the internal exhaust mechanism structure of the utility model;

[0020] Figure 3 It is a schematic diagram of the heat dissipation mechanism structure of the utility model;

[0021] Figure 4 It is a schematic diagram of a circuit connection module of the utility model.

[0022] Figure numerals: 1. battery box, 2. box cover, 3. control module, 4. mounting frame, 5. mounting hole, 6. partition, 7. battery body, 8. mounting compartment, 9. insertion frame, 10. sealing ring, 111. exhaust pipe, 112. release pipe, 113. filter device, 114. exhaust port, 12. one-way valve, 13. alarm, 14. first sensor, 15. thermal conductive silicone layer, 16. electronically controlled fire extinguisher, 17. first thermal conductive component, 171. first thermal conductive plate, 172. heat absorbing partition plate, 173. second thermal conductive component, 18. heat dissipation groove, 20. pressure relief valve, 21. partition plate. DETAILED DESCRIPTION

[0023] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar symbols throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0024] Example 1

[0025] refer to Figures 1 to 4 The lithium battery risk treatment device described in this embodiment includes a battery box 1, in which at least one group of heat-absorbing partition components for conducting heat and separating the battery box 1 into at least two groups of closed compartments 6 are installed. The heat-absorbing partition components are connected to each other, and each compartment 6 is installed with a group of battery bodies 7. The heat-absorbing partition components can not only conduct heat, but also separate the battery box 1 into at least two groups of compartments 6. The closed compartments 6 can protect the individual battery bodies 7, ensuring that the battery bodies 7 will not affect each other when an accident occurs.

[0026] Preferably, the heat absorption partition assembly includes a heat absorption partition plate 172 and a first heat conductive assembly 17, the top end of the heat absorption partition plate 172 is fixedly connected to the partition plate 21, the bottom end of the heat absorption partition plate 172 is fixedly connected to the first heat conductive assembly 17, and the first heat conductive assembly 17 is installed at the bottom end of the battery box 1.

[0027] Preferably, a thermally conductive silicone layer 15 is provided on the side of the heat-absorbing partition plate 172 facing the battery body 7. The thermally conductive silicone layer 15 can improve thermal conductivity. At the same time, the silicone has a certain elasticity and can better fit the battery body 7 for heat conduction.

[0028] Preferably, the first heat conducting component 17 includes a first heat conducting plate 171 .

[0029] Preferably, the first heat conducting plate is a metal plate.

[0030] The first heat conducting plate 171 is installed at the bottom end of the battery box 1 , and the bottom end of the first heat conducting plate 171 penetrates through the bottom end of the battery box 1 to install a second heat conducting member 173 .

[0031] Preferably, the second heat conducting member 173 includes a plurality of groups of heat sinks, and a ventilation channel is formed between two adjacent groups of heat sinks. The ventilation channel is used for ventilation to remove the heat on the heat sinks, thereby achieving a heat dissipation effect.

[0032] Preferably, a heat dissipation slot 18 is provided at the bottom of the heat sink. The heat dissipation slot 18 can improve the heat dissipation efficiency.

[0033] A processing module, a sensing module and a control module 3 are installed on the battery box 1. A group of processing modules and sensing modules are installed in each compartment 6. The processing module and the control module 3 are electrically connected. The sensing module and the control module 3 are electrically connected. After sensing abnormal information, the sensing module transmits the abnormal information to the control module 3, and the control module 3 transmits the processed information to the processing module.

[0034] The sensing module includes a first sensor 14 , and a sensing end of the first sensor 14 extends into the compartment 6 .

[0035] Preferably, the first sensor 14 includes an air pressure sensor and / or a temperature sensor.

[0036] The processing module includes a pressure relief valve 20 and an electric-controlled fire extinguisher 16. The release end of the electric-controlled fire extinguisher 16 extends into the compartment 6, and the pressure relief valve 20 is installed on the battery body 7. When the air pressure in the compartment 6 changes, the pressure relief valve 20 can be used to release pressure to prevent the battery body 7 from exploding. When the temperature in the compartment 6 changes, the electric-controlled fire extinguisher 16 can be used to cool down and extinguish the fire.

[0037] Preferably, an alarm 13 is installed on the control module 3, and the control module 3 is electrically connected to the alarm 13. The alarm 13 is used to promptly remind the staff when a fault occurs.

[0038] A partition plate 21 is installed in the battery box 1, and the partition plate 21 divides the battery box 1 into two groups of spaces. The space of the upper group is the installation compartment 8, and a release pipe 112 is fixedly installed in the installation compartment 8. The top of the heat-absorbing partition plate 172 is fixedly connected to the bottom of the partition plate 21. The release pipe 112 is connected to each group of compartments 6 through an exhaust pipe 111, and a check valve 12 is installed on the exhaust pipe 111. The exhaust pipe 111 discharges the excess gas in the compartment 6 into the release pipe 112 to prevent the compartment 6 from being over-pressured and causing an explosion hazard. The check valve 12 is used to prevent the gas in the release pipe 112 from entering the compartment 6 in normal use.

[0039] One end of the release tube 112 penetrates the wall of the installation chamber 8, and a filter device 113 is fixedly installed at the protruding end of the release tube 112, and an exhaust port 114 is provided at one end of the filter device 113 away from the release tube 112. The gas in the release tube 112 is discharged from the battery box 1 through the exhaust port 114, and the filter device 113 can filter out harmful substances in the gas to achieve an environmental protection effect.

[0040] Preferably, the filter device 113 is filled with activated carbon.

[0041] An insertion frame 9 is fixedly mounted on the top of the battery box 1 , and a box cover 2 is inserted into the battery box 1 through the insertion frame 9 .

[0042] A sealing ring 10 is bonded to the upper end of the insertion frame 9 .

[0043] Preferably, the control module 3 is installed on the box cover 2 .

[0044] The two sides of the bottom end of the battery box 1 are symmetrically welded with mounting frames 4, and the bottom end of the mounting frames 4 is provided with mounting holes 5. The mounting frames 4 and the mounting holes 5 are used to facilitate the installation and fixation of the battery box 1.

[0045] The heat absorbing partition plate 172 of the heat absorbing partition assembly not only acts as a partition but also transfers heat to the first heat conducting plate 171 of the heat conducting assembly 17. The heat is conducted out of the battery box 1 through the second heat conducting member 173 via the interconnected first heat conducting plates 171, thereby reducing the aging of the battery body 7, increasing the service life of the battery body 7, and reducing the risk of the battery body 7.

[0046] The heat absorbing partition plate 172 separates the space in the battery box 1 at the bottom of the partition plate 21 into separate compartments 6 to accommodate the battery body 7. When a group of battery bodies 7 is unbalanced, the first sensor 14 detects that the temperature in the compartment 6 has changed, and transmits the abnormal information to the control module 3. The control module 3 controls the alarm 13 to alarm and controls the electric-controlled fire extinguisher 16 to cool down. The first sensor 14 detects that the air pressure in the compartment 6 has changed, and transmits the abnormal information to the control module 3. The control module 3 controls the pressure relief valve 20 to open. If a fire occurs, the control module 3 synchronously controls the electric-controlled fire extinguisher 16 is used to extinguish the fire, and at the same time, the combustible gas enters the release pipe 112 through the exhaust pipe 111 under pressure, and one end of the release pipe 112 is connected to the filter device 113 to filter the combustible gas, which is then discharged through the exhaust port 114 to ensure that the gas is safely released into the air. A one-way valve 12 is added at the connection between the exhaust pipe 111 and the release pipe 12 to prevent the combustible gas from entering other storage compartments. A separate storage compartment ensures that the unbalanced battery body 7 is not associated with other battery modules, thereby preventing other battery modules from being damaged and reducing losses.

[0047] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0048] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0049] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0051] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A lithium battery risk management device, comprising a battery box (1), characterized in that: The battery box (1) is provided with at least one heat absorbing partition component for absorbing heat and partitioning the battery box (1) into at least two groups of closed compartments (6) for accommodating battery bodies (7), and the heat absorbing partition components are connected to each other; the battery box (1) is provided with a processing module, a sensing module and a control module (3), each compartment (6) is provided with a group of processing modules and sensing modules, and the processing modules and sensing modules are both electrically connected to the control module (3); after sensing abnormal information, the sensing module transmits the abnormal information to the control module (3), and the control module (3) transmits the processed information to the processing module; A partition plate (21) is installed in the battery box (1), and the partition plate (21) divides the battery box (1) into an upper installation chamber (8) and at least two groups of partition chambers (6) at the bottom. A release pipe (112) is fixedly installed in the installation chamber (8). The top end of the heat-absorbing partition plate (172) is fixedly connected to the bottom end of the partition plate (21). The release pipe (112) is connected to the partition chamber (6) through an exhaust pipe (111), and a one-way valve (12) is installed on the exhaust pipe (111). One end of the release pipe (112) passes through the chamber wall of the installation chamber (8), and a filter device (113) is fixedly installed at the protruding end of the release pipe (112). An exhaust port (114) is provided at one end of the filter device (113) away from the release pipe (112).

2. A lithium battery risk management device according to claim 1, characterized in that: The heat absorption partition assembly comprises a heat absorption partition plate (172) and a first heat conduction assembly (17); the heat absorption partition plate (172) and the first heat conduction assembly (17) are fixedly connected; the first heat conduction assembly (17) are mutually connected and are both mounted on the battery box (1).

3. A lithium battery risk management device according to claim 2, characterized in that: The first heat-conducting component (17) comprises a first heat-conducting plate (171), and a heat-absorbing partition plate (172) is mounted on the first heat-conducting plate (171).

4. A lithium battery risk management device according to claim 3, characterized in that: The first heat conducting plate (171) is mounted at the bottom end of the battery box (1), and the first heat conducting plate (171) has a portion extending out of the battery box (1) and located below the battery box (1), and a second heat conducting member (173) is mounted at the extended end of the first heat conducting plate (171).

5. A lithium battery risk management device according to claim 4, characterized in that: The second heat-conducting member (173) includes a plurality of groups of heat-dissipating fins, and a ventilation channel is formed between two adjacent groups of heat-dissipating fins.

6. A lithium battery risk management device according to claim 1, characterized in that: The sensing module comprises a first sensor (14), wherein a sensing end of the first sensor (14) extends into the compartment (6).

7. A lithium battery risk management device according to claim 1, characterized in that: The processing module comprises a pressure relief valve (20) and / or an electric-controlled fire extinguisher (16), the release end of the electric-controlled fire extinguisher (16) extends into the compartment (6), and the pressure relief valve (20) is mounted on the battery body (7).

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