Battery protection board with temperature control protection

Abstract

The present application relates to the technical fields of battery management system, and particularly relates to a battery protection board with temperature control protection, which comprises a battery block, and a temperature control protection mechanism is fixedly connected to one side surface of the battery block. The battery protection board with temperature control protection is designed to detect the temperature by the temperature control protection mechanism, and when the temperature is too high, the air pump injects high-pressure gas into the vortex tube to cool the cooling pipe. After the cold air leaves the cooling pipe, it enters the battery block cooling pipeline to cool the outside of the battery block. At the same time, the liquid pump drives the liquid in the flow guide pipe and the cooling pipe to flow, so as to realize the heat exchange between the liquid and the battery block. This design effectively regulates the heat of the battery in a high-temperature environment, prevents the high temperature from greatly increasing the chemical reaction rate inside the battery, reduces the aging process of the battery caused by high temperature, improves the charging and discharging efficiency and capacity of the battery, and prolongs the service life of the battery.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery management systems, and particularly relates to a battery protection board with temperature control protection. BACKGROUND

[0002] Effectively controlling temperature has a great negative impact on the performance and service life of the battery, and therefore, a battery protection board with temperature control protection is particularly needed.

[0003] However, the existing battery protection board often does not have a temperature control protection mechanism, which can cause the heat of the battery to be unable to be effectively regulated in a high-temperature environment. High temperature can greatly increase the chemical reaction rate inside the battery, which can cause the battery to bulge, leak, and even explode, posing a major threat to the surrounding environment and personnel safety. In addition, high temperature can also accelerate the aging process of the battery, reduce the charge and discharge efficiency and capacity of the battery, and shorten the service life of the battery. SUMMARY

[0004] The present application relates to the technical field of battery management systems, and particularly relates to a battery protection board with temperature control protection.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a battery protection board with temperature control protection, comprising a battery block, a main circuit board fixedly connected to the upper surface of the battery block, a temperature control signal line fixedly connected to the lower surface of the main circuit board, a temperature sensor fixedly connected to one side surface of the temperature control signal line, and a temperature control protection mechanism fixedly connected to one side surface of the battery block.

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

[0007] Preferably, the battery block is provided with twenty groups in total, and the ten groups on the left and right are fixedly connected to the heat-conducting connecting shell in a staggered manner.

[0008] Preferably, the temperature sensor is arranged inside the heat-conducting connecting shell, and when the temperature is too high, the signal is transmitted to the main circuit board through the temperature control signal line, and then the cooling of the cooling liquid is controlled by the air pump.

[0009] Preferably, the flow guide pipe is arranged in a bent manner inside the heat-conducting connecting shell, so as to expand the contact area, the cooling pipe is arranged outside the heat-conducting connecting shell, and the cooling flow pipe is wound outside the cooling pipe.

[0010] Preferably, the vortex pipe is arranged on one side surface of the liquid pump, and the gas is blown into the vortex pipe by the air pump, so that the cold gas flows out from the cooling flow pipe upwardly, and the hot gas is discharged from the lower part.

[0011] Preferably, the battery block cooling pipe is arranged outside the battery block, and is wound in a layer-by-layer manner, and the gas inside the battery block cooling pipe comes from the cooling flow pipe.

[0012] Preferably, the material of the heat-conducting connecting shell is copper, and the cooling liquid in the flow guide pipe and the cooling pipe is ethylene glycol.

[0013] Preferably, the cooling liquid in the flow guide pipe and the cooling pipe is rapidly cooled after passing through the cooling flow pipe, and the vortex pipe can reduce the temperature to minus ten degrees Celsius at the lowest.

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

[0015] Preferably, the connection part of the flow guide pipe and the cooling pipe is provided with a sealing gasket made of fluororubber material which is resistant to high temperature and corrosion, so as to effectively prevent leakage of the cooling liquid and ensure normal operation of the cooling system.

[0016] Compared with the prior art, the battery protection plate with temperature control protection has the beneficial effects that when temperature adjustment treatment is needed for the battery, the temperature sensor detects that the temperature is too high, and then transmits a 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 is divided into cold gas and hot gas due to vortex and other phenomena, and the cold gas and the hot gas leak out from the upper side and the lower side, respectively, wherein the cold gas enters the cooling flow pipe from the upper side to cool the cooling pipe, and after the cold gas leaves the cooling flow pipe, the cold gas enters the battery block cooling pipeline to cool the outer side of the battery block, at the same time, the liquid pump is started with the air pump, and the liquid pump drives the liquid in the flow guide pipe and the cooling pipe to flow, so that the liquid exchanges heat with the battery block, and the battery is effectively regulated and controlled in a high-temperature environment, the chemical reaction rate in the battery is prevented from being greatly increased due to high temperature, and the phenomenon of battery bulging and liquid leakage is prevented, meanwhile, the aging process of the battery is reduced due to high temperature, the charging and discharging efficiency and the capacity of the battery are improved, and the service life of the battery is prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a side appearance structure schematic view of the present application;

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

[0019] Figure 3 It is a heat conduction connecting shell and other equipment external structure schematic view of the present application;

[0020] Figure 4 It is a heat conduction connecting shell and other equipment internal structure schematic view of the present application;

[0021] Figure 5 It is a temperature control protection mechanism structure schematic view of the present application;

[0022] Figure 6 It is a main circuit board, temperature control signal line and temperature sensor mutual cooperation structure schematic view of the present application.

[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 connecting shell; 502, flow guide pipe; 503, cooling pipe; 504, liquid pump; 505, vortex tube; 506, cooling flow pipe; 507, battery block cooling pipeline; 508, air pump; 509, signal transmission line. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

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

[0026] The temperature control protection mechanism 5 comprises a heat conduction connecting shell 501, a flow guide pipe 502, a cooling pipe 503, a liquid pump 504, a vortex pipe 505, a cooling flow pipe 506, a battery block cooling pipe 507, an air pump 508 and a signal transmission line 509, one side surface of the battery block 1 is fixedly connected with the heat conduction connecting shell 501, the inner side surface of the heat conduction connecting shell 501 is fixedly connected with the flow guide pipe 502, one side surface of the flow guide pipe 502 is fixedly connected with the cooling pipe 503, the lower surface of the cooling pipe 503 is fixedly connected with the liquid pump 504, one side surface of the liquid pump 504 is fixedly connected with the vortex pipe 505, one side surface of the vortex pipe 505 is fixedly connected with the cooling flow pipe 506, one side surface of the cooling flow pipe 506 is fixedly connected with the battery block cooling pipe 507, one side surface of the vortex pipe 505 is fixedly connected with the air pump 508, one side surface of the air pump 508 is fixedly connected with the signal transmission line 509, through the arrangement of the heat conduction connecting shell 501, the flow guide pipe 502, the cooling pipe 503, the liquid pump 504, the vortex pipe 505, the cooling flow pipe 506, the battery block cooling pipe 507, the air pump 508 and the signal transmission line 509, when the temperature sensor 4 detects that the temperature is too high during use, the signal is transmitted 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 pipe 505, the gas leaks out from the upper and lower sides due to vortex and other phenomena, and the cold gas enters the cooling flow pipe 506 from the upper side, and the hot gas enters the battery block cooling pipe 507 from the lower side, and at the same time, the liquid pump 504 is started with the air pump 508, and the liquid pump 504 drives the liquid in the flow guide pipe 502 and the cooling pipe 503 to flow, so as to realize heat exchange between the liquid and the battery block 1. This design can effectively regulate the heat of the battery in a high-temperature environment, prevent the chemical reaction rate in the battery from increasing significantly due to high temperature, and prevent the battery from bulging and leaking. At the same time, the high temperature accelerates the aging process of the battery, improves the charging and discharging efficiency and capacity of the battery, and prolongs the service life of the battery.

[0027] Further, the battery block 1 is provided with a total of twenty groups, which are arranged in ten groups on the left and right sides and are fixedly connected with the heat conduction connecting shell 501 in a staggered manner. Through the arrangement of the battery block 1, when the battery block 1 is arranged in ten groups on the left and right sides and is fixedly connected with the heat conduction connecting shell 501 in a staggered manner, the heat distribution on the heat conduction connecting shell can be more uniform, and when the heat management system cools or heats the heat conduction connecting shell 501, the local overheating or overcooling can be avoided, so that each battery block 1 can work in a suitable temperature environment, which is beneficial to improve the performance and safety of the battery as a whole.

[0028] Further, the temperature sensor 4 is arranged inside the heat conduction connecting shell 501, and when the temperature is too high, the signal will be transmitted to the main circuit board 2 through the temperature control signal line 3, and then the air pump 508 is controlled to cool the cooling liquid. Through the arrangement of the temperature sensor 4, the temperature sensor 4 is located inside the heat conduction connecting shell during use, and can most directly perceive the temperature change caused by the heat generated by the battery pack during work. The heat conduction connecting shell 501 is the key part of heat transfer, and the temperature at this point is used as the basis for control, which can accurately reflect the thermal state of the battery, avoid temperature misjudgment caused by inaccurate monitoring points, and ensure the accuracy of the battery temperature control.

[0029] Further, the flow guide pipe 502 is arranged in a curved manner inside the heat conduction connecting shell 501, and the cooling pipe 503 is arranged outside the heat conduction connecting shell 501, and the cooling flow pipe 506 is wound outside the cooling pipe 503. Through the arrangement of the flow guide pipe 502 and the cooling flow pipe 506, in use, the flow guide pipe 502 is arranged in a curved manner inside the heat conduction connecting shell 501, which greatly expands the contact area with the heat conduction connecting shell. This makes the cooling liquid flowing in the flow guide pipe more fully absorb the heat conducted by the heat conduction connecting shell 501, speeds up the heat transfer from the heat conduction connecting shell 501 to the cooling liquid, and thus more effectively reduces the temperature of the heat conduction connecting shell 501 and the battery connected thereto.

[0030] Further, the vortex pipe 505 is arranged on one side surface of the liquid pump 504, and the gas is blown into the vortex pipe 505 by the air pump 508. Due to the vortex phenomenon, the cold gas flows out of the cooling flow pipe 506 from above, and the hot gas is discharged from below. Through the arrangement of the vortex pipe 505, in use, the working principle of the vortex pipe 505 is based on the vortex phenomenon of gas to realize cold and hot separation. The cold gas generated by blowing gas into the vortex pipe 505 by the air pump 508 flows out of the cooling flow pipe 506 from above, which can be directly used to cool the cooling pipe 503 outside the heat conduction connecting shell. This way can efficiently deliver cold gas to the parts that need to be cooled. Compared with the traditional cooling method, the cold source can be more accurately used for cooling, and the cooling efficiency is improved.

[0031] Further, the battery block cooling pipe 507 is arranged outside the battery block 1 and is wound layer by layer, and the gas inside comes from the cooling flow pipe 506. Through the arrangement of the battery block cooling pipe 507, in use, the battery block cooling pipe 507 is arranged outside the battery block 1 and is wound layer by layer, which can maximize the coverage of the outer surface of the battery block 1. Such design can ensure that the cooling gas has sufficient contact area with the battery block 1, so that the heat can be more efficiently conducted from the battery block to the cooling medium in the cooling pipe.

[0032] Further, the material of the heat conduction connecting shell 501 is copper, and the cooling liquid in the flow guide pipe 502 and the cooling pipe 503 is ethylene glycol. Through the arrangement of the heat conduction connecting shell 501 and the flow guide pipe 502, in use, copper is an excellent heat conductor with high thermal conductivity. Using copper as the material of the heat conduction connecting shell can quickly conduct the heat generated by the battery away. The boiling point of ethylene glycol is relatively high, and it can remain in a liquid state under high temperature environment and is not easy to vaporize. This makes it possible for ethylene glycol to stably absorb and transfer heat in the flow guide pipe and the cooling pipe. At the same time, the freezing point of ethylene glycol is relatively low, and it is not easy to freeze under low temperature environment, thereby ensuring that the cooling system can still work normally under low temperature conditions.

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

[0034] Further, the signal transmission line 509 is made of shielding wire material to prevent external electromagnetic interference and ensure that the temperature signal is accurately transmitted to the air pump 508 and other related control elements, thereby ensuring the stable operation of the temperature control protection mechanism. Through the arrangement of the signal transmission line 509, in use, in a space where electronic devices are densely arranged or near a strong electromagnetic field source, the shielding wire can effectively block external electromagnetic radiation. These electromagnetic radiations can come from signal transmission of other electronic devices, electromagnetic leakage of radio waves or power systems, etc. If the signal transmission line does not have shielding function, external electromagnetic interference can be superimposed on the temperature signal, resulting in signal distortion. For example, it can cause the signal transmitted by the temperature sensor to indicate that the battery temperature is too high to be wrong, so that the air pump cannot normally start the cooling program, thereby affecting the effective control of the temperature control protection mechanism on the temperature of the battery block.

[0035] Further, the connection part of the flow guide pipe 502 and the cooling pipe 503 is provided with a sealing gasket made of fluorine rubber material which is resistant to high temperature and corrosion, effectively preventing the leakage of cooling liquid and ensuring the normal operation of the cooling system. Through the arrangement of the flow guide pipe 502 and the cooling pipe 503, the sealing gasket arranged between the flow guide pipe 502 and the cooling pipe 503 acts as a solid defense line, effectively preventing the cooling liquid from leaking or spraying out of the connection part, ensuring that the cooling system always maintains an intact cooling liquid circulation path, so that the cooling liquid can flow stably between various components according to the design requirements, thereby ensuring the normal operation of the entire cooling system.

[0036] Working principle: When 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, and 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 gas and hot gas due to vortex and other phenomena, which leaks from the top and bottom respectively. The cold gas enters the cooling flow pipe 506 from the top to cool the cooling pipe 503. After the cold gas leaves the cooling flow pipe 506, it enters the battery block cooling pipe 507 to cool the outside of the battery block 1. At the same time, the liquid pump 504 is also started with the air pump 508, which drives the liquid in the flow guide pipe 502 and the cooling pipe 503 to flow, realizing the heat exchange between the liquid and the battery block 1. This design effectively regulates the heat of the battery in a high-temperature environment, prevents the high temperature from greatly increasing the chemical reaction rate inside the battery, which may cause the battery to swell and leak, and at the same time, reduces the high temperature to accelerate the aging process of the battery, improves the charge and discharge efficiency and capacity of the battery, and prolongs the service life of the battery.

[0037] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements and changes can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application 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 pipe (507), an air pump (508) and a signal transmission line (509); one side surface of the battery block (1) is fixedly connected to the heat conduction connection shell (501); the inner side surface of the heat conduction connection shell (501) is fixedly connected to the flow guide tube (502); one side surface of the flow guide tube (502) is fixedly connected to the cooling tube (503); the cooling tube (503) is arranged on the outside of the heat conduction connection shell (501); the lower surface of the cooling tube (503) is fixedly connected to the liquid pump (504); one side surface of the liquid pump (504) is fixedly connected to A vortex tube (505) is fixedly connected to a cooling flow tube (506) on one side surface of the vortex tube (505), the cooling flow tube (506) is wound around the outside of the cooling tube (503), a battery block cooling pipe (507) is fixedly connected to one side surface of the cooling flow tube (506), the battery block cooling pipe (507) is arranged on the outer ring of the battery block (1), and is wound by layers of overlapping layers, and the gas inside the battery block cooling pipe comes from the cooling flow tube (506), an air pump (508) is fixedly connected to one side surface of the vortex tube (505), the air pump (508) blows gas into the vortex tube (505), and due to the vortex phenomenon, the cold gas flows upward from the cooling flow tube (506), while the hot gas is discharged from the bottom, and a signal transmission line (509) is fixedly connected to one side surface of the air pump (508).

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

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 tube (502) is bent inside the heat conduction connection shell (501) to expand its contact area.

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).

6. 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 cooling liquid in the flow guide tube (502) and the cooling tube (503) is ethylene glycol.

7. The battery protection board with temperature control protection according to claim 1, characterized in that: The cooling liquid 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 minus ten degrees Celsius at the lowest.

8. 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.

9. 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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