Battery pack protection device for new energy automobile

Abstract

The invention discloses a battery pack protection device for a new energy automobile, and relates to the technical field of new energy automobile batteries, the battery pack protection device comprises a bottom plate and further comprises surrounding plates arranged on the two sides of the bottom plate, mounting assemblies are arranged on the tops of the surrounding plates, a protection shell is arranged between the surrounding plates, and a damping buffer part is fixedly connected between the protection shell and the bottom plate; battery units are arranged in the protective shell, partition plates are fixedly connected in the protective shell between the battery units, the battery units are sleeved with a protective cover, temperature detection assemblies are arranged at the two ends of the protective cover, a fixing rod is arranged above the battery units, and a fire extinguishing assembly and an auxiliary heat dissipation assembly are arranged at the two ends of a mounting block respectively. The bottom of the fixing rod is fixedly connected with a gas collecting pipe, the gas inlet end of the gas inlet pipe is provided with a one-way gas inlet valve, the gas outlet end of the gas collecting pipe is fixedly connected with a gas guide pipe, the gas guide pipe extends to the position above the mounting block, the top of the gas guide pipe is fixedly connected with a one-way gas outlet valve, and the two ends of the fixing rod are provided with piston assemblies respectively. The device is safer to use and better in protection effect.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy vehicle batteries, and in particular to a battery pack protection device for new energy vehicles. Background Art

[0002] New energy vehicles all have the same feature of battery packs. The internal structure of the battery pack is similar, with batteries, boxes for placing batteries, high-voltage wiring harnesses, low-voltage wiring harnesses, high-voltage power-off systems, battery management systems, thermal management systems, etc. It can be said that in a pure electric vehicle, the battery is its heart. Similarly, in a hybrid vehicle, the battery can also be considered another heart. The battery is externally charged through a power plug, supplies power to the electric motor, drives the vehicle, and stores energy recovered by braking.

[0003] When traditional new energy vehicle battery packs are actually used, they are generally installed in units in a packaging shell, and then an anti-collision or buffer shell is set on the outside to protect the battery. However, when actually used, the battery will generate heat during operation. Many traditional battery protection devices use natural heat dissipation, and cannot flexibly adjust the heat dissipation efficiency according to the actual heat generation of the battery during operation. The economy is not good, and there is no fixed-point fire extinguishing function, and the safety and stability are poor. Summary of the invention

[0004] In order to overcome the shortcomings of the prior art, the purpose of the present invention is to provide a battery pack protection device for new energy vehicles. By setting a temperature detection component in combination with a fire extinguishing component and an auxiliary heat dissipation component, the problem that many traditional battery protection devices use natural heat dissipation, cannot flexibly adjust the heat dissipation efficiency according to the actual heat generation of the battery during operation, have poor economy, do not have the function of fixed-point fire extinguishing, and have poor safety and stability can be solved.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A battery pack protection device for a new energy vehicle comprises a base plate, and further comprises: enclosures arranged on both sides of the base plate, a mounting assembly is arranged on the top of the enclosures, a protective shell is arranged between the enclosures, a shock absorbing buffer is fixedly connected between the protective shell and the base plate, a battery cell is arranged in the protective shell, a partition is fixedly connected in the protective shell between the battery cells, a protective cover is sleeved outside the battery cell, a temperature detection assembly is arranged at both ends of the protective cover, a fixing rod is arranged above the battery cell, both ends of the fixing rod are fixedly connected to the enclosure, a mounting block is fixedly connected to the top of the fixing rod, and a fire extinguishing assembly and a are arranged at both ends of the mounting block respectively Auxiliary heat dissipation component, the temperature detection component corresponds to the fire extinguishing component and the auxiliary heat dissipation component respectively, the bottom of the fixed rod is fixedly connected to the air collecting pipe, a positioning block is arranged under the air collecting pipe, the bottom of the air collecting pipe is fixedly connected to the air intake pipe, the air intake pipe passes through the positioning block and is fixedly connected to the positioning block, a one-way air intake valve is arranged at the air intake end of the air intake pipe, the air outlet end of the air collecting pipe is fixedly connected to the air guide pipe, the air guide pipe extends to above the mounting block and the top is fixedly connected to the one-way air outlet valve, piston assemblies are respectively arranged at both ends of the fixed rod, the telescopic end of the piston assembly is connected to the protective shell, and the piston assembly is connected to the air collecting pipe.

[0007] As a preferred technical solution of the present invention, the mounting assembly includes a mounting rod fixedly arranged on the top of the enclosure, and mounting holes are respectively provided at both ends of the mounting rod.

[0008] As a preferred technical solution of the present invention, the temperature detection component includes a temperature sensor fixedly mounted on the protective shell, the signal output end of the temperature sensor is connected to a conductive wire, the conductive wire extends to the mounting block, the top two sides of the mounting block are fixedly connected to fixed blocks, one side of the fixed block is fixedly connected to an electric telescopic column, and the electric telescopic column is electrically connected to the conductive wire.

[0009] As a preferred technical solution of the present invention, the fire extinguishing assembly includes an electric-controlled fire extinguisher fixedly mounted on a mounting block, a fire extinguishing head is arranged at a discharge end of the electric-controlled fire extinguisher, the fire extinguishing head passes through a positioning block and corresponds to a battery unit.

[0010] As a preferred technical solution of the present invention, the auxiliary heat dissipation assembly includes an electric radiator fixedly mounted on a mounting block, an air inlet end of the electric radiator fixedly connected to a transfer pipe, the transfer pipe passes through a positioning block, and a heat dissipation head is fixedly connected to the bottom, and the heat dissipation head is arranged corresponding to the battery unit.

[0011] As a preferred technical solution of the present invention, the telescopic ends of the electric telescopic columns on both sides of the mounting block correspond to the switches of the electric-controlled fire extinguisher and the electric radiator respectively.

[0012] As a preferred technical solution of the present invention, the piston assembly includes an air suction cylinder fixedly arranged at the bottom of the fixed rod, a piston column is slidably penetrated through the bottom wall of the air suction cylinder, the top of the piston column is fixedly connected to a piston block, the piston block is slidably arranged in the air suction cylinder, the bottom of the piston column is fixedly connected to a fixed arm, one side of the fixed arm is fixedly connected to the outer wall of the protective shell, and the air suction cylinder is connected to the air collecting pipe.

[0013] The present invention has the following advantages: under the action of the fire extinguishing component and the auxiliary heat dissipation component, it can assist in heat dissipation and improve the heat dissipation effect. At the same time, it can achieve fixed-point fire extinguishing and improve the safety of the battery body. Under the action of the piston component, when the protective shell vibrates up and down, the one-way air inlet valve and the one-way air outlet valve can actively dissipate heat when the vehicle starts to vibrate, and in this case, no electric energy does not need to be consumed for heat dissipation, which is more economical. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A schematic diagram of the structure of a battery pack protection device for new energy vehicles Figure 1 .

[0015] Figure 2 A schematic diagram of the structure of a battery pack protection device for new energy vehicles Figure 2 .

[0016] Figure 3 A schematic diagram of the structure of a battery pack protection device for new energy vehicles Figure 3 .

[0017] Figure 4 for Figure 3 Schematic diagram of the enlarged structure of A.

[0018] Figure 5 This is a schematic diagram of the side structure of a battery pack protection device for new energy vehicles.

[0019] Figure 6 This is a schematic diagram of the cross-sectional structure of a battery pack protection device for new energy vehicles.

[0020] In the figure: 1. bottom plate; 2. enclosure; 3. protective shell; 4. mounting rod; 5. fixing rod; 6. suction cylinder; 7. piston column; 8. mounting hole; 9. air duct; 10. conductive wire; 11. protective cover; 12. mounting block; 13. air collecting pipe; 14. one-way air outlet valve; 15. electric fire extinguisher; 16. fixing block; 17. electric telescopic column; 18. positioning block; 19. one-way air inlet valve; 20. fire extinguishing head; 21. heat sink; 22. electric radiator; 23. transfer pipe; 24. battery unit; 25. temperature sensor; 26. partition; 27. shock absorbing buffer; 28. fixing arm; 29. ​​piston block; 30. air inlet pipe. DETAILED DESCRIPTION

[0021] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0022] Example 1, please refer to Figure 1-Figure 6 A battery pack protection device for a new energy vehicle comprises a base plate 1, and further comprises: a panel 2 fixedly arranged on both sides of the base plate 1, a mounting assembly is arranged on the top of the panel 2, a protective shell 3 is arranged between the panel 2, a shock absorbing buffer 27 is fixedly connected between the protective shell 3 and the base plate 1, a battery cell 24 is arranged in the protective shell 3, a partition 26 is fixedly connected in the protective shell 3 between the battery cells 24, a protective cover 11 is sleeved outside the battery cell 24, a temperature detection assembly is arranged at both ends of the protective cover 11, a fixing rod 5 is arranged above the battery cell 24, both ends of the fixing rod 5 are fixedly connected to the panel 2, a mounting block 12 is fixedly connected to the top of the fixing rod 5, and a fire extinguishing device is arranged at both ends of the mounting block 12. Components and auxiliary heat dissipation components, the temperature detection components correspond to the fire extinguishing components and the auxiliary heat dissipation components respectively, the bottom of the fixing rod 5 is fixedly connected to the collecting pipe 13, a positioning block 18 is arranged below the collecting pipe 13, the bottom of the collecting pipe 13 is fixedly connected to the air intake pipe 30, the air intake pipe 30 is arranged through the positioning block 18 and is fixedly connected to the positioning block 18, a one-way air intake valve 19 is arranged at the air intake end of the air intake pipe 30, the air outlet end of the collecting pipe is fixedly connected to the air guide pipe 9, the air guide pipe 9 extends to the top of the mounting block 12 and is fixedly connected to the one-way air outlet valve 14 at the top, piston components are respectively arranged at both ends of the fixing rod 5, the telescopic end of the piston component is connected to the protective shell 3, and the piston component is communicated with the collecting pipe 13;

[0023] The bottom plate 1 serves as the foundation of the entire device, and the enclosure 2 is fixedly arranged on both sides of the bottom plate 1 to form an enclosure structure for protecting the internal battery cells 24. Installation assembly: A mounting assembly is arranged on the top of the enclosure 2 to facilitate the installation of the entire device on the new energy vehicle. Protective shell 3 and shock-absorbing buffer 27: A protective shell 3 is arranged between the enclosure 2, and the protective shell 3 and the bottom plate 1 are fixedly connected by the shock-absorbing buffer 27 to reduce the impact of vibration on the battery cells 24 during the driving of the vehicle. Battery cells 24 and partitions 26: Battery cells 24 are arranged in the protective shell 3, and the battery cells 24 are separated by partitions 26 to improve the safety and stability of the battery pack;

[0024] Each battery cell 24 is provided with a protective cover 11 on the outside, and a temperature detection component is provided at both ends of the protective cover 11 for real-time monitoring of the temperature of the battery cell 24; the two ends of the fixed rod 5 are fixedly connected to the enclosure 2, and the top is fixedly connected to the mounting block 12. The two ends of the mounting block 12 are respectively provided with a fire extinguishing component and an auxiliary heat dissipation component, corresponding to the temperature detection component, for taking corresponding safety measures when the temperature of the battery cell 24 is too high; the bottom of the fixed rod 5 is fixedly connected to the gas collecting pipe 13, a positioning block 18 is provided below the gas collecting pipe 13, and the bottom is fixedly connected to the intake pipe 30; the intake end of the intake pipe 30 is provided with a one-way intake valve 19, and the outlet end of the gas collecting pipe 13 is fixedly connected to the air guide pipe 9, which extends to the top of the mounting block 12 and is fixedly connected to the one-way outlet valve 14 at the top. This design can realize the circulation and discharge of gas; piston assembly: the two ends of the fixed rod 5 are respectively provided with piston assemblies, and the telescopic end of the piston assembly is connected to the protective shell 3 and communicated with the gas collecting pipe 13. This design can be used to adjust the air pressure in the protective shell 3.

[0025] Through the use of multi-layer protective structures such as the enclosure 2, the protective shell 3, the shock-absorbing buffer 27, the protective cover 11, and the temperature detection component, the fire extinguishing component and the auxiliary heat dissipation component, the safety of the battery pack can be greatly improved, and the risk of damage or failure of the battery unit 24 during driving can be reduced. The partition 26 separates the battery units 24, which can prevent the mutual influence between the battery units 24 and improve the stability of the battery pack. At the same time, the shock-absorbing buffer 27 can reduce the impact of vibration on the battery unit 24 during the driving of the vehicle, and further ensure the stability of the battery pack. The temperature detection component can monitor the temperature of the battery unit 24 in real time. When the temperature is too high, the auxiliary heat dissipation component can be quickly started to dissipate heat. At the same time, the design of the piston assembly and the gas collecting pipe 13 can also help adjust the air pressure and temperature in the protective shell 3 and improve the heat dissipation efficiency. The design of the mounting assembly and the piston assembly makes the entire device easy to install on the new energy vehicle, and is convenient for subsequent maintenance and maintenance.

[0026] Example 2, please refer to Figure 1-Figure 6 The installation assembly includes a mounting rod 4 fixedly arranged on the top of the enclosure 2, and mounting holes 8 are respectively provided at both ends of the mounting rod 4. The operator can fix and install the device through the mounting holes 8 on the mounting rod 4.

[0027] The temperature detection component includes a temperature sensor 25 fixedly arranged on the protective shell 3, the signal output end of the temperature sensor 25 is connected to the conductive wire 10, the conductive wire 10 extends to the mounting block 12, the top of the mounting block 12 is fixedly connected to the fixing blocks 16 on both sides, and one side of the fixing block 16 is fixedly connected to the electric telescopic column 17, and the electric telescopic column 17 is electrically connected to the conductive wire 10. In actual use, when the temperature sensor 25 detects that the temperature of the battery reaches the set temperature, it will send a signal and control the electric telescopic column 17 to extend and retract.

[0028] The fire extinguishing assembly includes an electric-controlled fire extinguisher 15 fixedly mounted on the mounting block 12. A fire extinguishing head 20 is arranged at the discharge end of the electric-controlled fire extinguisher 15. The fire extinguishing head 20 passes through the positioning block 18 and corresponds to the battery unit 24. When the electric telescopic column 17 is extended or retracted, the electric-controlled fire extinguisher 15 is started. The electric-controlled fire extinguisher 15 extinguishes the battery unit 24 with a higher temperature through the fire extinguishing head 20, thereby ensuring the safety of the battery as a whole and preventing the safety of the entire battery from being affected due to a fire in one battery.

[0029] The auxiliary heat dissipation component includes an electric radiator 22 fixedly arranged on the mounting block 12, the air inlet end of the electric radiator 22 is fixedly connected to the transfer pipe 23, the transfer pipe 23 passes through the positioning block 18, and the bottom is fixedly connected to the heat sink 21, the heat sink 21 is arranged corresponding to the battery unit 24, in actual use, when the electric telescopic column 17 drives the electric radiator 22 to start, the electric radiator 22 absorbs heat in time through the transfer pipe 23 and the heat sink 21 to assist in heat dissipation, and further improves the heat dissipation effect; the telescopic ends of the electric telescopic columns 17 on both sides of the mounting block 12 correspond to the switches of the electric-controlled fire extinguisher 15 and the electric radiator 22 respectively, in actual use, when the electric telescopic column 17 is extended, it can drive the electric-controlled fire extinguisher 15 and the electric radiator 22 to open and close.

[0030] The piston assembly includes an air suction cylinder 6 fixedly arranged at the bottom of the fixed rod 5, a piston column 7 is slidably arranged on the bottom wall of the air suction cylinder 6, a piston column 7 is fixedly connected to the top of the piston column 7, and the piston block 29 is slidably arranged in the air suction cylinder 6, and the bottom of the piston column 7 is fixedly connected to the fixed arm 28, and one side of the fixed arm 28 is fixedly connected to the outer wall of the protective shell 3, and the air suction cylinder 6 is connected to the air collecting pipe 13; in actual use, the piston column 7 in the air suction cylinder 6 will drive the piston block 29 to move up and down in the air suction cylinder 6, thereby realizing the suction and release of the gas in the air collecting pipe 13, and under the action of the one-way air inlet valve 19 and the one-way air outlet valve 14, one-way exhaust is realized, and natural heat dissipation is realized. This heat dissipation effect can be achieved only by vibration, without energy consumption, better use effect, and higher economy.

[0031] The standard parts used in the present invention can all be purchased from the market, and the special-shaped parts can be customized according to the description and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0032] In the description of the present invention, 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 one or more of the features. "Multiple" means two or more, unless otherwise clearly and specifically defined.

[0033] 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 connection; it can be a mechanical connection or an electrical connection; 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. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In the present invention, 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.

[0035] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0036] In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other.

[0037] 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 protection scope of the present invention.

Claims

1. A battery pack protection device for a new energy vehicle, comprising a bottom plate (1), characterized in that: Also includes: Enclosures (2) are arranged on both sides of the bottom plate (1), and a mounting assembly is arranged on the top of the enclosures (2). A protective shell (3) is arranged between the enclosures (2), and a shock-absorbing buffer (27) is fixedly connected between the protective shell (3) and the bottom plate (1). Battery units (24) are arranged in the protective shell (3), and a partition (26) is fixedly connected in the protective shell (3) between the battery units (24). A protective cover (11) is sleeved on the outside of the battery unit (24), and temperature detection assemblies are arranged at both ends of the protective cover (11). A fixing rod (5) is arranged above the battery unit (24), and both ends of the fixing rod (5) are fixedly connected to the enclosure (2). The top of the fixing rod (5) is fixedly connected to a mounting block (12), and both ends of the mounting block (12) are respectively provided with a fire extinguishing assembly and an auxiliary heat dissipation assembly. The temperature detection components correspond to the fire extinguishing components and the auxiliary heat dissipation components respectively. The bottom of the fixed rod (5) is fixedly connected to the air collecting pipe (13). A positioning block (18) is arranged below the air collecting pipe (13). The bottom of the air collecting pipe (13) is fixedly connected to the air inlet pipe (30). The air inlet pipe (30) passes through the positioning block (18) and is fixedly connected to the positioning block (18). A one-way air inlet valve (19) is arranged at the air inlet end of the air inlet pipe (30). The air outlet end of the air collecting pipe (13) is fixedly connected to the air guide pipe (9). The air guide pipe (9) extends to the top of the mounting block (12) and is fixedly connected to the one-way air outlet valve (14) at the top. Piston assemblies are respectively arranged at both ends of the fixed rod (5). The telescopic end of the piston assembly is connected to the protective shell (3). The piston assembly is communicated with the air collecting pipe (13).

2. A battery pack protection device for new energy vehicles according to claim 1, characterized in that: The mounting assembly comprises a mounting rod (4) fixedly arranged on the top of the enclosure (2), and mounting holes (8) are respectively provided at both ends of the mounting rod (4).

3. A battery pack protection device for new energy vehicles according to claim 1, characterized in that: The temperature detection assembly comprises a temperature sensor (25) fixedly arranged on the protective shell (3); a signal output end of the temperature sensor (25) is connected to a conductive wire (10); the conductive wire (10) extends to a mounting block (12); both sides of the top of the mounting block (12) are fixedly connected to a fixed block (16); one side of the fixed block (16) is fixedly connected to an electric telescopic column (17); and the electric telescopic column (17) is electrically connected to the conductive wire (10).

4. A battery pack protection device for new energy vehicles according to claim 3, characterized in that: The fire extinguishing assembly comprises an electric-controlled fire extinguisher (15) fixedly mounted on a mounting block (12); a fire extinguishing head (20) is arranged at the discharge end of the electric-controlled fire extinguisher (15); the fire extinguishing head (20) passes through a positioning block (18) and corresponds to a battery unit (24).

5. A battery pack protection device for new energy vehicles according to claim 4, characterized in that: The auxiliary heat dissipation assembly comprises an electric radiator (22) fixedly arranged on a mounting block (12); an air inlet end of the electric radiator (22) is fixedly connected to a transfer pipe (23); the transfer pipe (23) passes through a positioning block (18) and a bottom portion thereof is fixedly connected to a heat dissipation head (21); the heat dissipation head (21) is arranged correspondingly to a battery unit (24).

6. A battery pack protection device for new energy vehicles according to claim 5, characterized in that: The telescopic ends of the electric telescopic columns (17) on both sides of the mounting block (12) correspond to the switches of the electric-controlled fire extinguisher (15) and the electric radiator (22) respectively.

7. A battery pack protection device for new energy vehicles according to claim 1, characterized in that: The piston assembly comprises an air suction cylinder (6) fixedly arranged at the bottom of a fixed rod (5); a piston column (7) is slidably arranged on the bottom wall of the air suction cylinder (6); the top of the piston column (7) is fixedly connected to a piston block (29); the piston block (29) is slidably arranged in the air suction cylinder (6); the bottom of the piston column (7) is fixedly connected to a fixed arm (28); one side of the fixed arm (28) is fixedly connected to the outer wall of the protective shell (3); and the air suction cylinder (6) is connected to the gas collecting pipe (13).

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