A power battery electrode separation control device

Abstract

The present invention discloses a power battery electrode separation control device, comprising a housing, a connecting device, and a cover plate. The housing is provided with batteries, an insulating plate is provided within the fixing plate, fixing holes are provided on the sides of the fixing plate, an insulating rod is provided on the inside of the contact, and a metal ring is installed on the outside of the insulating rod. A telescopic device installed on the top of the housing is provided on the outside of the top of the insulating rod, and the cover plate is installed on the outside of the fixing plate. In the event of a fire, the power battery electrode separation control device cuts off the external current of the short-circuited battery pack or other short-circuit point power sources to the greatest extent possible and releases the battery pack's high-voltage state, preventing the fire outbreak point and the short-circuit point from receiving power input to reduce the energy of the fault damage, thereby preventing other normal battery packs from causing thermal runaway, sympathetic combustion, and other phenomena due to high current, preventing the fire from spreading rapidly, and creating fire extinguishing conditions for the power battery fire extinguishing device.

Description

Technical Field

[0001] The present invention relates to the technical field related to power batteries, and in particular to a power battery electrode separation control device. Background Art

[0002] With the development of science and technology, the use of cars is increasing. During the use of cars, power batteries are needed inside the car to circulate electricity.

[0003] At present, power batteries are high-voltage battery packs composed of single cells connected in series. When a battery cell or external circuit short-circuits, a short-circuit current path is formed in the entire battery pack, and each cell has to bear the short-circuit current, which is extremely likely to cause thermal runaway and make the fire easily spread. At the same time, the combustion process of the power battery pack is prone to repeated fires and cannot be extinguished for a long time. Therefore, we propose a power battery electrode separation control device to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to provide a power battery electrode separation control device to solve the problems raised in the above background technology that the current power batteries are prone to thermal runaway, which makes it easy for the fire to spread all over the place, and at the same time, the fire occurs repeatedly during the combustion process of the power battery pack and cannot be extinguished for a long time.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: A power battery electrode separation control device, comprising a box body, a connecting device and a cover plate, wherein a battery is arranged inside the box body, and a fixing plate is installed at the top of the box body, an insulating plate is arranged inside the fixing plate, and a contact is connected to the inner side of the insulating plate, a fixing hole is opened on the side of the fixing plate, and a connecting device is provided below the fixing plate, an insulating rod is arranged on the inner side of the contact, and a metal ring is installed on the outer side of the insulating rod, a telescopic device installed on the top of the box body is provided on the outer side of the top of the insulating rod, and a fixing ring is installed on the top of the telescopic device, a clamping bolt is connected to the inner top of the fixing ring, the cover plate is installed on the outer side of the fixing plate, and an arc extinguishing plate is fixed on the inner side of the cover plate.

[0006] Preferably, the batteries are distributed in an array inside the box, and the positive and negative poles at the bottom of the batteries are connected in an alternating manner, and the positive and negative poles at the top of the batteries are connected to the contacts correspondingly through a connecting device.

[0007] Preferably, the fixing plate is connected to the box body through fixing bolts between the fixing holes, and insulating plates are arranged at equal intervals on the inner side of the fixing plate, and contacts are symmetrically arranged on the inner side of the insulating plates.

[0008] Preferably, metal rings are fixedly mounted on the outer side of the insulating rod at equal intervals, and the metal rings and the contacts are arranged correspondingly, and the metal rings are electrically connected to the connecting device and the battery via the contacts.

[0009] Preferably, the insulating rod is correspondingly plugged into the fixing ring, and the insulating rod is correspondingly fixedly connected to the fixing ring via a clamping bolt, and the insulating rod forms a left-right sliding structure on the outer side of the fixing plate via a telescopic device.

[0010] Preferably, arc-preventing plates are installed at equal intervals inside the cover plate, and the arc-preventing plates are correspondingly engaged with the insulating rods, and the arc-preventing plates are correspondingly staggered with the metal rings.

[0011] Preferably, a protective cover is provided outside the connection terminals of the batteries inside the box.

[0012] Compared with the prior art, the beneficial effects of the present invention are: the power battery electrode separation control device, when a fire occurs, cuts off the external current of the short-circuited battery pack or other short-circuit point power sources as much as possible, so that the fire outbreak point and the short-circuit point cannot receive power input to reduce the energy of fault damage, and thus prevents other normal battery packs from causing thermal runaway due to large current, thereby preventing the fire from spreading rapidly and creating fire extinguishing conditions for the power battery fire extinguishing device; the structure of this device can greatly cater to the structural characteristics of the automotive power battery, and the connection points can be designed and increased or decreased according to the needs of the battery pack.

[0013] This device can effectively slow down the spread of fire. When combined with a battery fire extinguishing device, it is very likely to put out the fire in the first time, providing more protection for saving people's lives and property. It can also cut off the circuit, separate the short-circuit point, and relieve the high-voltage state of the battery without adding too many connection points. When the electronic control part fails, the pneumatic device can still be used to separate the electrical contacts. If necessary, a manual operation part can be installed to facilitate maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the front cross-sectional structure of the present invention;

[0015] Figure 2 Schematic diagram of the connection structure of the contacts of the present invention;

[0016] Figure 3 Schematic diagram of the top structure of the fixing plate of the present invention;

[0017] Figure 4 It is a schematic diagram of the overall structure of the arc extinguishing plate of the present invention.

[0018] In the figure: 1. Box body; 2. Battery; 3. Fixing plate; 4. Insulating plate; 5. Contact; 6. Fixing hole; 7. Connecting device; 8. Insulating rod; 9. Metal ring; 10. Telescopic device; 11. Fixing ring; 12. Holding bolt; 13. Cover plate; 14. Arc extinguishing plate. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] See also Figure 1-4 The present invention provides a technical solution: a power battery electrode separation control device, including a box body 1, a battery 2, a fixing plate 3, an insulating plate 4, a contact 5, a fixing hole 6, a connecting device 7, an insulating rod 8, a metal ring 9, a telescopic device 10, a fixing ring 11, a pressing bolt 12, a cover plate 13 and an arc extinguishing plate 14. The battery 2 is arranged inside the box body 1, and the fixing plate 3 is installed at the top of the box body 1. The insulating plate 4 is arranged inside the fixing plate 3, and the inner side of the insulating plate 4 is connected to the contact 5. A fixing hole 6 is provided on the side of the fixing plate 3, and a connecting device 7 is provided under the fixing plate 3, an insulating rod 8 is provided on the inner side of the contact 5, and a metal ring 9 is installed on the outer side of the insulating rod 8, a telescopic device 10 installed on the top of the box body 1 is provided on the outer side of the top end of the insulating rod 8, and a fixing ring 11 is installed on the top of the telescopic device 10, a clamping bolt 12 is connected to the inner top of the fixing ring 11, a cover plate 13 is installed on the outer side of the fixing plate 3, and an arc extinguishing plate 14 is fixed on the inner side of the cover plate 13.

[0021] like Figure 1 and Figure 2 The middle batteries 2 are distributed in an array inside the box 1, and the positive and negative poles at the bottom of the battery 2 are staggered, and the positive and negative poles at the top of the battery 2 are connected to the contacts 5 respectively through the connecting device 7, so as to facilitate circuit connectivity and realize the series connection of all individual batteries.

[0022] like Figure 1 、 Figure 2 and Figure 3The middle fixing plate 3 is connected to the box body 1 by fixing bolts through fixing holes 6, and insulating plates 4 are arranged at equal intervals on the inner side of the fixing plate 3. Contacts 5 are symmetrically arranged on the inner side of the insulating plates 4 to facilitate circuit connection and ensure circuit connectivity. The connecting device can be a cable or a connecting bar. A protective sleeve can also be provided outside the battery terminal inside the box. The internal protective sleeve can be formed by crossing insulating plates to form a grid to surround each terminal. The insulating plates can be slotted to facilitate the passage of wires and electrode connection plates.

[0023] like Figure 1 and Figure 3 Metal rings 9 are fixedly installed at equal intervals on the outside of the middle insulating rod 8, and the metal rings 9 are correspondingly arranged with the contacts 5. The metal rings 9 are electrically connected to the connecting device 7 and the battery 2 through the contacts 5, so that the battery 2 can be connected and used through the metal rings 9. The metal rings 9 are driven to slide by the insulating rod 8 to ensure disconnection. The insulating rod 8 is correspondingly plugged into the fixed ring 11, and the insulating rod 8 is correspondingly fixedly connected to the fixed ring 11 through the clamping bolt 12. The insulating rod 8 forms a left and right sliding structure on the outside of the fixed plate 3 through the telescopic device 10, so that the insulating rod 8 can be automatically driven to slide by the telescopic device 10. A specific embodiment of the contact can be a spring; or the outside can be a contact piece and the inside is a wiring point, which is connected to the cable or terminal block serving as the connecting device 7 by screw crimping or welding. The material of the contact is generally copper. The telescopic device can be a telescopic cylinder or a telescopic motor.

[0024] like Figure 1 and Figure 4 Arc prevention plates 14 are installed at equal intervals inside the middle cover plate 13, and the arc prevention plates 14 are correspondingly engaged with the insulating rods 8, and the arc prevention plates 14 are correspondingly staggered with the metal rings 9, so as to prevent the occurrence of arcs and avoid recurrence of fire.

[0025] When using the power battery electrode separation control device, Figure 1 and Figure 2 In the embodiment, the battery 2 is connected by the connecting device 7 through the contact 5, so that the battery 2 monomers are connected through the connecting device 7, the contact 5 and the metal ring 9 to form a communication structure, so as to facilitate circuit connection and thus power transmission. When a short circuit occurs and a fire occurs, for example, the vehicle fire alarm system detects that the vehicle is on fire, the controller sends a signal to the telescopic device 10, such as Figure 1 and Figure 3The extension of the telescopic device 10 causes the telescopic device 10 to drive the insulating rod 8 to slide on the inner side of the contact 5 through the fixing ring 11, so that the metal ring 9 on the outer side of the insulating rod 8 is separated from the contact 5, thereby disconnecting the connection between the battery cells 2 and releasing the high-voltage state of the battery pack, thereby greatly reducing the short-circuit current of the internal battery cell fault point or completely isolating the power output to the external fault point.

[0026] And as Figure 1 and Figure 4 In the embodiment, the metal ring 9 is isolated from each other by the arc extinguishing plate 14, thereby isolating the batteries 2 and preventing arcing between the positive and negative electrodes of the batteries 2 above, so as to prevent fire and prevent fire from recurring. Figure 1 and Figure 3 The forward and reverse rotation of the clamping bolt 12 facilitates manual sliding of the insulating rod 8, which makes it easier to perform maintenance and use. This is the entire working process of the power battery electrode separation control device. The content not described in detail in this specification belongs to the existing technology known to professional and technical personnel in this field.

[0027] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology, and the circuit connection adopts the conventional connection method in the existing technology, which will not be described in detail here.

[0028] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A power battery electrode separation control device, comprising a housing (1), a connecting device (7) and an external cover plate (13), characterized in that: The box (1) is provided with a battery (2), and a fixing plate (3) is installed at the top of the box (1), an insulating plate (4) is provided inside the fixing plate (3), and the inner side of the insulating plate (4) is connected to a contact (5), a fixing hole (6) is opened on the side of the fixing plate (3), and a connecting device (7) is provided below the fixing plate (3), an insulating rod (8) is provided on the inner side of the contact (5), and a metal ring (9) is installed on the outer side of the insulating rod (8), a telescopic device (10) installed on the top of the box (1) is provided on the outer side of the top of the insulating rod (8), and a fixing ring (11) is installed on the top of the telescopic device (10), and a pressing bolt (12) is connected to the inner top of the fixing ring (11), the cover plate (13) is installed on the outer side of the fixing plate (3), and an arc extinguishing plate (14) is fixed on the inner side of the cover plate (13).

2. A power battery electrode separation control device according to claim 1, characterized in that: The batteries (2) are distributed in an array inside the box (1), and the positive and negative electrodes at the bottom of the batteries (2) are connected in an alternating manner, and the positive and negative electrodes at the top of the batteries (2) are connected to the contacts (5) via connecting devices (7).

3. The power battery electrode separation control device according to claim 1, characterized in that: The fixing plate (3) is connected to the box body (1) via fixing bolts through fixing holes (6), and insulating plates (4) are arranged at equal intervals on the inner side of the fixing plate (3), and contacts (5) are symmetrically arranged on the inner side of the insulating plate (4).

4. The power battery electrode separation control device according to claim 1, characterized in that: Metal rings (9) are fixedly mounted at equal intervals on the outside of the insulating rod (8), and the metal rings (9) and the contacts (5) are arranged correspondingly, and the metal rings (9) are electrically connected to the connecting device (7) and the battery (2) via the contacts (5).

5. The power battery electrode separation control device according to claim 1, characterized in that: The insulating rod (8) and the fixing ring (11) are correspondingly plugged in, and the insulating rod (8) is correspondingly fixedly connected to the fixing ring (11) via a clamping bolt (12), and the insulating rod (8) forms a left-right sliding structure on the outside of the fixing plate (3) via a telescopic device (10).

6. The power battery electrode separation control device according to claim 1, characterized in that: Arc extinguishing plates (14) are installed at equal intervals inside the cover plate (13), and the arc extinguishing plates (14) are correspondingly engaged with the insulating rods (8), and the arc extinguishing plates (14) and the metal rings (9) are correspondingly staggered.

7. The power battery electrode separation control device according to claim 1, characterized in that: A protective cover is provided outside the connection terminal of the battery inside the box.

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