Battery protection board with temperature control protection

Abstract

The invention relates to the related technical field of battery management systems, in particular to a battery protection board with temperature control protection, which comprises a battery block, and the surface of one side of the battery block is fixedly connected with a temperature control protection mechanism. According to the battery protection plate with the temperature control protection function, through the arrangement of the temperature control protection mechanism, after a temperature sensor detects that the temperature is too high, an air pump is controlled to inject high-pressure gas into a vortex tube, cooling treatment is conducted on a cooling pipe, and after cold air leaves a cooling flow pipe, the cold air enters a battery block cooling pipeline to conduct heat dissipation on the outer side of a battery block; meanwhile, the liquid pump drives liquid in the flow guide pipe and the cooling pipe to flow to realize heat exchange between the liquid and the battery block, so that the heat of the battery in a high-temperature environment is effectively regulated and controlled, the chemical reaction rate in the battery is prevented from being greatly increased due to high temperature, and meanwhile, the aging process of the battery is accelerated by reducing the high temperature; the charge-discharge efficiency and capacity of the battery are improved, and the service life of the battery is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field related to battery management systems, and in particular to a battery protection board with temperature control protection. Background Art

[0002] Effectively controlling the temperature will have a great negative impact on the performance and life of the battery. Therefore, there is a particular need for a battery protection board with temperature control protection.

[0003] However, existing battery protection plates often do not have temperature control protection mechanisms, which will result in the battery being unable to effectively regulate heat in a high-temperature environment. High temperatures will significantly increase the chemical reaction rate inside the battery, which may cause battery bulging, leakage, and even explosions in severe cases, posing a major threat to the surrounding environment and personnel safety. At the same time, high temperatures will also accelerate the battery aging process, reduce the battery's charging and discharging efficiency and capacity, and shorten the battery's service life. Summary of the invention

[0004] The purpose of the present invention is to provide a battery protection plate with temperature control protection to solve the problem that the existing battery protection plates proposed in the above background technology often do not have a temperature control protection mechanism, which will result in the battery heat being unable to be effectively regulated in a high temperature environment. High temperature will greatly increase the chemical reaction rate inside the battery, which may cause battery bulging, leakage, and even explosion in severe cases, posing a major threat to the surrounding environment and personnel safety. At the same time, high temperature will also accelerate the aging process of the battery, reduce the battery charging and discharging efficiency and capacity, and shorten the battery life.

[0005] To achieve the above object, the present invention provides the following technical solution: a battery protection board with temperature control protection, comprising a battery block, the upper surface of the battery block is fixedly connected to a main circuit board, the lower surface of the main circuit board is fixedly connected to a temperature control signal line, one side surface of the temperature control signal line is fixedly connected to a temperature sensor, and one side surface of the battery block is fixedly connected to a temperature control protection mechanism;

[0006] The temperature control protection mechanism includes a heat conduction connection shell, a guide tube, a cooling tube, a liquid pump, a vortex tube, a cooling flow tube, a battery block cooling pipeline, an air pump and a signal transmission line. One side surface of the battery block is fixedly connected with the heat conduction connection shell, the inner side surface of the heat conduction connection shell is fixedly connected with the guide tube, one side surface of the guide tube is fixedly connected with the cooling tube, the lower surface of the cooling tube is fixedly connected with the liquid pump, one side surface of the liquid pump is fixedly connected with the vortex tube, one side surface of the vortex tube is fixedly connected with the cooling flow tube, one side surface of the cooling flow tube is fixedly connected with the battery block cooling pipeline, one side surface of the vortex tube is fixedly connected with the air pump, and one side surface of the air pump is fixedly connected with the signal transmission line.

[0007] Preferably, the battery blocks are arranged in a total of twenty groups, and are divided into ten groups on the left and right, each of which is arranged on both sides of the heat conduction connection shell and is staggered and fixedly connected.

[0008] Preferably, the temperature sensor is arranged inside the heat conduction connection shell, and when it senses that the temperature is too high, it will transmit the signal to the main circuit board through the temperature control signal line, and then control the air pump to achieve cooling of the coolant.

[0009] Preferably, the guide pipe is bent inside the heat conduction connection shell to expand its contact area, and the cooling pipe is arranged outside the heat conduction connection shell, and the cooling flow pipe is wound around the outside.

[0010] Preferably, the vortex tube is arranged on one side surface of the liquid pump, and the gas is blown into the vortex tube by the action of the air pump. Due to the vortex and other phenomena, the cold gas flows upward from the cooling flow tube, and the hot gas is discharged from the bottom.

[0011] Preferably, the battery block cooling duct is arranged on the outer ring of the battery block, is wound by stacking layers, and the gas inside it comes from the cooling flow pipe.

[0012] Preferably, the material of the heat conduction connection shell is copper, and the coolant in the flow guide pipe and the cooling pipe is ethylene glycol.

[0013] Preferably, the coolant in the guide tube and the cooling tube will cool down rapidly after passing through the cooling flow tube, and the vortex tube can reduce the temperature to minus ten degrees Celsius at the lowest.

[0014] Preferably, the signal transmission line is made of shielded wire material to prevent external electromagnetic interference, ensure that the temperature signal is accurately transmitted to the air pump and other related control components, and ensure the stable operation of the temperature control protection mechanism.

[0015] Preferably, a sealing gasket is provided at the connection between the guide pipe and the cooling pipe. The sealing gasket is made of high temperature resistant and corrosion resistant fluororubber material to effectively prevent coolant leakage and ensure the normal operation of the cooling system.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: the battery protection board with temperature control protection, through the setting of the temperature control protection mechanism, when the battery needs to be temperature-regulated, the temperature sensor detects that the temperature is too high, and transmits the signal to the main circuit board through the temperature control signal line, and then the main circuit board controls the air pump to start injecting high-pressure gas into the vortex tube. The gas passes through the vortex tube due to vortex and other phenomena, and the gas is divided into cold air and hot air, which leak out from the top and bottom respectively, wherein the cold air enters the cooling flow tube from the top to cool the cooling tube, and after the cold air leaves the cooling flow tube, it enters the battery block cooling pipe to dissipate heat on the outside of the battery block, at the same time, the liquid pump is also started with the air pump, and the liquid pump drives the liquid in the guide tube and the cooling tube to flow, so as to realize the heat exchange of the liquid with the battery block, and this design enables the battery to effectively regulate the heat in a high temperature environment, prevents the high temperature from significantly increasing the chemical reaction rate inside the battery, and may cause battery bulging, leakage and other phenomena, and at the same time, reduces the high temperature to accelerate the aging process of the battery, improves the charging and discharging efficiency and capacity of the battery, and extends the service life of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the side appearance structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the basic overall structure of the present invention;

[0019] Figure 3 It is a schematic diagram of the external structure of the heat conduction connection shell and other equipment of the present invention;

[0020] Figure 4 It is a schematic diagram of the internal structure of the heat conduction connection shell and other equipment of the present invention;

[0021] Figure 5 This is a schematic diagram of the structure of the temperature control protection mechanism of the present invention;

[0022] Figure 6 The present invention is a schematic diagram of the structure of the main circuit board, the temperature control signal line and the temperature sensor cooperating with each other.

[0023] In the figure: 1. battery block; 2. main circuit board; 3. temperature control signal line; 4. temperature sensor; 5. temperature control protection mechanism; 501. heat conduction connection shell; 502. flow guide tube; 503. cooling tube; 504. liquid pump; 505. vortex tube; 506. cooling flow tube; 507. battery block cooling pipeline; 508. air pump; 509. signal transmission line. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0025] See also Figure 1-6 The present invention provides a technical solution: a battery protection board with temperature control protection, comprising a battery block 1, a main circuit board 2 is fixedly connected to the upper surface of the battery block 1, a temperature control signal line 3 is fixedly connected to the lower surface of the main circuit board 2, a temperature sensor 4 is fixedly connected to one side surface of the temperature control signal line 3, and a temperature control protection mechanism 5 is fixedly connected to one side surface of the battery block 1;

[0026] The temperature control protection mechanism 5 includes a heat conduction connection shell 501, a flow guide tube 502, a cooling tube 503, a liquid pump 504, a vortex tube 505, a cooling flow tube 506, a battery block cooling pipeline 507, an air pump 508 and a signal transmission line 509. The heat conduction connection shell 501 is fixedly connected to one side surface of the battery block 1, the flow guide tube 502 is fixedly connected to the inner side surface of the heat conduction connection shell 501, the cooling tube 503 is fixedly connected to one side surface of the flow guide tube 502, the lower surface of the cooling tube 503 is fixedly connected to the liquid pump 504, and the liquid pump 509 is fixedly connected to the lower surface of the cooling tube 503. 4 is fixedly connected to a vortex tube 505 on one side surface, a cooling flow tube 506 is fixedly connected to a cooling flow tube 506 on one side surface, a battery block cooling pipe 507 is fixedly connected to a cooling flow tube 506 on one side surface, an air pump 508 is fixedly connected to a signal transmission line 509 on one side surface of the vortex tube 505, and a shell 501, a guide tube 502, a cooling pipe 503, a liquid pump 504, a vortex tube 505, a cooling flow tube 506, a battery block cooling pipe 507, an air pump 508, The signal transmission line 509 is set. When in use, after the temperature sensor 4 detects that the temperature is too high, it transmits the signal to the main circuit board 2 through the temperature control signal line 3. Then the main circuit board 2 controls the air pump 508 to start injecting high-pressure gas into the vortex tube 505. The gas passes through the vortex tube 505. Due to the vortex and other phenomena, the gas is divided into cold air and hot air, which leak out from the top and bottom respectively. The cold air enters the cooling flow tube 506 from the top to cool the cooling tube 503. After the cold air leaves the cooling flow tube 506, it enters the battery block cooling The pipe 507 dissipates heat on the outside of the battery block 1. At the same time, the liquid pump 504 is started along with the air pump 508. The liquid pump 504 drives the liquid in the guide tube 502 and the cooling tube 503 to flow, thereby realizing heat exchange between the liquid and the battery block 1. This design allows the battery to effectively regulate heat in a high-temperature environment, preventing high temperature from significantly increasing the chemical reaction rate inside the battery, which may cause battery bulging, leakage, etc. At the same time, it reduces the aging process of the battery that is accelerated by high temperature, improves the battery's charging and discharging efficiency and capacity, and extends the battery's service life.

[0027] Furthermore, a total of twenty groups of battery blocks 1 are provided, and ten groups are divided into left and right groups, each of which is arranged on both sides of the heat conduction connection shell 501 and fixedly connected in an interlaced manner. Through the arrangement of the battery blocks 1, when in use, since the battery blocks 1 are divided into left and right groups and fixedly fixed on both sides of the heat conduction connection shell, the heat can be distributed more evenly on the heat conduction connection shell. When the thermal management system cools or heats the heat conduction connection shell 501, local overheating or overcooling can be avoided, ensuring that each battery block 1 can work in a suitable temperature environment, which is beneficial to improving the overall performance and safety of the battery.

[0028] Furthermore, the temperature sensor 4 is arranged inside the heat conduction connection shell 501, and when it senses that the temperature is too high, it will transmit the signal to the main circuit board 2 through the temperature control signal line 3, and then control the air pump 508 to achieve cooling of the coolant. Through the setting of the temperature sensor 4, when in use, the temperature sensor 4 is located inside the heat conduction connection shell, and can most directly sense the temperature change caused by the heat generated by the battery pack. The heat conduction connection shell 501 is a key part of heat transfer. Control based on the temperature here can accurately reflect the thermal state of the battery, avoid temperature misjudgment caused by inaccurate monitoring points, and ensure the accuracy of battery temperature control.

[0029] Furthermore, the flow guide tube 502 is bent inside the heat conduction connection shell 501 to expand its contact area, the cooling tube 503 is arranged on the outside of the heat conduction connection shell 501, and the cooling flow tube 506 is wound around its outside. Through the arrangement of the flow guide tube 502 and the cooling flow tube 506, when in use, the flow guide tube 502 is bent inside the heat conduction connection shell 501, which greatly expands the contact area with the heat conduction connection shell. This allows the coolant to more fully absorb the heat conducted from the heat conduction connection shell 501 when flowing in the flow guide tube, speeding up the speed of heat transfer from the heat conduction connection shell 501 to the coolant, thereby more effectively reducing the temperature of the heat conduction connection shell 501 and the battery connected thereto.

[0030] Furthermore, the vortex tube 505 is arranged on one side surface of the liquid pump 504, and the gas is blown into the vortex tube 505 through the action of the air pump 508. Due to phenomena such as vortex, the cold gas flows upward from the cooling flow tube 506, while the hot gas is discharged from the bottom. Through the setting of the vortex tube 505, when in use, the working principle of the vortex tube 505 is to achieve cold and hot separation based on the vortex phenomenon of the gas. The gas is blown into the vortex tube 505 by the air pump 508, and the generated cold gas flows upward from the cooling flow tube 506, which can be directly used to cool the cooling tube 503 on the outside of the heat conduction connection shell. This method can efficiently transport the cold gas to the part that needs cooling. Compared with the traditional cooling method, it can more accurately utilize the cold source for cooling, thereby improving the cooling efficiency.

[0031] Furthermore, the battery block cooling pipe 507 is arranged on the outer circle of the battery block 1, which is stacked and wound layer by layer, and the gas inside it comes from the cooling flow tube 506. Through the setting of the battery block cooling pipe 507, when in use, the battery block cooling pipe 507 is arranged on the outer circle of the battery block 1 and is stacked and wound layer by layer, which can cover the outer surface of the battery block 1 to the greatest extent. Such a design can ensure that the cooling gas has sufficient contact area with the battery block 1, so that heat can be more efficiently transferred from the battery block to the cooling medium in the cooling pipe.

[0032] Furthermore, the material of the heat conduction connecting shell 501 is copper, and the coolant in the guide tube 502 and the cooling tube 503 is ethylene glycol. Through the setting of the connecting shell 501 and the guide tube 502, when in use, copper is an excellent thermal conductor with high thermal conductivity. Using copper as the heat conduction connecting shell material can quickly conduct the heat generated by the battery, and ethylene glycol has a high boiling point and can remain liquid in a high temperature environment and will not easily vaporize, which enables it to stably absorb and transfer heat in the guide tube and the cooling tube. At the same time, ethylene glycol has a low freezing point and is not easy to freeze in a low temperature environment, thereby ensuring that the cooling system can still work normally under low temperature conditions.

[0033] Furthermore, the coolant in the guide tube 502 and the cooling tube 503 will be rapidly cooled down after passing through the cooling flow tube 506. The vortex tube 505 can reduce the temperature to minus ten degrees Celsius at the lowest. Through the setting of the vortex tube 505, when in use, fast and effective cooling measures help to extend the service life of the battery. High temperature is one of the main factors of battery aging. Timely cooling can reduce the damage to the battery caused by high temperature, such as battery capacity attenuation, increased internal resistance and other problems. In addition, for cooling components such as the guide tube 502 and the cooling tube 503, a stable temperature environment can also reduce material aging and damage caused by factors such as thermal stress, extend the service life of these components, and reduce the maintenance cost of the entire battery system.

[0034] Furthermore, the signal transmission line 509 is made of shielded wire material to prevent external electromagnetic interference, ensure that the temperature signal is accurately transmitted to the air pump 508 and other related control components, and ensure the stable operation of the temperature control protection mechanism. Through the setting of the signal transmission line 509, when in use, such as in a space with dense electronic equipment or near a strong electromagnetic field source, the shielded line can effectively block external electromagnetic radiation. These electromagnetic radiations may come from signal transmission of other electronic equipment, radio waves or electromagnetic leakage of the power system, etc. If the signal transmission line does not have a shielding function, external electromagnetic interference may be superimposed on the temperature signal, resulting in signal distortion. For example, the signal transmitted by the temperature sensor indicating that the battery temperature is too high may be erroneous, causing the air pump to receive an erroneous instruction and fail to start the cooling program normally, thereby affecting the effective control of the battery block temperature by the entire temperature control protection mechanism.

[0035] Furthermore, a sealing gasket is provided at the connection between the guide pipe 502 and the cooling pipe 503. The sealing gasket is made of high-temperature resistant and corrosion-resistant fluororubber material, which can effectively prevent leakage of coolant and ensure the normal operation of the cooling system. Through the setting of the guide pipe 502 and the cooling pipe 503, when in use, the sealing gasket arranged between the guide pipe 502 and the cooling pipe 503 is like a solid line of defense, which can effectively prevent the coolant from seeping or spraying out from the connection, ensuring that the cooling system always maintains a complete coolant circulation path, so that the coolant can flow stably between the various components according to the design requirements, thereby ensuring the normal operation of the entire cooling system.

[0036] Working principle: After the temperature sensor 4 detects that the temperature is too high, it transmits the signal to the main circuit board 2 through the temperature control signal line 3. Then the main circuit board 2 controls the air pump 508 to start injecting high-pressure gas into the vortex tube 505. The gas passes through the vortex tube 505 and is divided into cold air and hot air due to vortex and other phenomena. The gas leaks out from the top and bottom respectively. The cold air enters the cooling flow tube 506 from the top to cool the cooling tube 503. After the cold air leaves the cooling flow tube 506, it enters the battery block cooling pipe 507. While the outside of the battery block 1 is being cooled, the liquid pump 504 is also started along with the air pump 508. The liquid pump 504 drives the liquid in the guide tube 502 and the cooling tube 503 to flow, thereby realizing heat exchange between the liquid and the battery block 1. This design allows the battery to effectively regulate heat in a high-temperature environment, preventing high temperature from significantly increasing the chemical reaction rate inside the battery, which may cause battery bulging, leakage, etc. At the same time, it reduces the aging process of the battery that is accelerated by high temperature, improves the charging and discharging efficiency and capacity of the battery, and extends the service life of the battery.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A battery protection board with temperature control protection, comprising a battery block (1), characterized in that: The upper surface of the battery block (1) is fixedly connected to a main circuit board (2), the lower surface of the main circuit board (2) is fixedly connected to a temperature control signal line (3), one side surface of the temperature control signal line (3) is fixedly connected to a temperature sensor (4), and one side surface of the battery block (1) is fixedly connected to a temperature control protection mechanism (5); The temperature control protection mechanism (5) comprises a heat conduction connection shell (501), a flow guide tube (502), a cooling tube (503), a liquid pump (504), a vortex tube (505), a cooling flow tube (506), a battery block cooling pipeline (507), an air pump (508) and a signal transmission line (509); a heat conduction connection shell (501) is fixedly connected to a surface of one side of the battery block (1); a flow guide tube (502) is fixedly connected to an inner surface of the heat conduction connection shell (501); a cooling tube (503) is fixedly connected to a surface of one side of the flow guide tube (502); A cooling tube (503) is provided, wherein a liquid pump (504) is fixedly connected to the lower surface of the cooling tube (503), a vortex tube (505) is fixedly connected to the side surface of the liquid pump (504), a cooling flow tube (506) is fixedly connected to the side surface of the vortex tube (505), a battery block cooling pipe (507) is fixedly connected to the side surface of the cooling flow tube (506), an air pump (508) is fixedly connected to the side surface of the air pump (508), and a signal transmission line (509) is fixedly connected to the side surface of the air pump (508).

2. A battery protection board with temperature control protection according to claim 1, characterized in that: The battery blocks (1) are arranged in a total of twenty groups, and are divided into ten groups on the left and right, each of which is arranged on both sides of the heat conduction connection shell (501) and is staggered and fixedly connected.

3. The battery protection board with temperature control protection according to claim 1, characterized in that: The temperature sensor (4) is arranged inside the heat conduction connection shell (501), and when it senses that the temperature is too high, it transmits a signal to the main circuit board (2) through the temperature control signal line (3), and then controls the air pump (508) to achieve cooling of the coolant.

4. The battery protection board with temperature control protection according to claim 1, characterized in that: The flow guide pipe (502) is bent inside the heat conduction connection shell (501) to expand its contact area; the cooling pipe (503) is arranged outside the heat conduction connection shell (501), and the cooling flow pipe (506) is wound around the outside thereof.

5. The battery protection board with temperature control protection according to claim 1, characterized in that: The vortex tube (505) is arranged on a side surface of the liquid pump (504), and gas is blown into the vortex tube (505) by the action of the air pump (508). Due to vortex and other phenomena, cold gas flows upward from the cooling flow tube (506), while hot gas is discharged from the bottom.

6. The battery protection board with temperature control protection according to claim 1, characterized in that: The battery block cooling pipe (507) is arranged on the outer ring of the battery block (1), is wound in layers, and the gas inside it comes from the cooling flow pipe (506).

7. The battery protection board with temperature control protection according to claim 1, characterized in that: The material of the heat conduction connection shell (501) is copper, and the coolant in the flow guide tube (502) and the cooling tube (503) is ethylene glycol.

8. The battery protection board with temperature control protection according to claim 1, characterized in that: The coolant in the guide tube (502) and the cooling tube (503) will be rapidly cooled after passing through the cooling flow tube (506), and the vortex tube (505) can reduce the temperature to a minimum of minus ten degrees Celsius.

9. The battery protection board with temperature control protection according to claim 1, characterized in that: The signal transmission line (509) is made of shielded wire material to prevent external electromagnetic interference, ensure that the temperature signal is accurately transmitted to the air pump (508) and other related control components, and ensure the stable operation of the temperature control protection mechanism.

10. The battery protection board with temperature control protection according to claim 1, characterized in that: A sealing gasket is provided at the connection between the guide pipe (502) and the cooling pipe (503). The sealing gasket is made of high temperature resistant and corrosion resistant fluororubber material, which effectively prevents coolant leakage and ensures the normal operation of the cooling system.

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