Battery environment parameter adjusting device, battery and vehicle

Abstract

The utility model relates to a battery environment parameter adjusting device, a battery and a vehicle, and relates to the technical field of batteries. The battery environment parameter adjusting device comprises a temperature sensor, a control unit, a ventilation valve and a fan assembly, wherein the temperature sensor is arranged in an inner cavity of a battery shell; the control unit is electrically connected with the temperature sensor and receives temperature information collected by the temperature sensor. The fan assembly is electrically connected with the control unit and is driven to start when the temperature information is higher than a first preset temperature; one end of the ventilation valve is used for communicating with the external environment, and the other end of the ventilation valve can communicate with the cavity in one side of the fan assembly. The fan assembly has a first state and a second state, and the rotation direction of the fan assembly in the first state is opposite to the rotation direction of the fan assembly in the second state, so that air in the inner cavity can be discharged to the external environment through the ventilation valve. Therefore, the short circuit of the electrical assembly caused by condensate water generated in the cooling process is avoided, and the safety of the battery is improved.

Description

Technical Field

[0001] The present application relates to the technical field of batteries, and particularly to a battery environmental parameter adjustment device, a battery, and a vehicle. Background Art

[0002] With the popularization of new energy vehicles, the battery, as an important component of new energy vehicles, its safety performance affects the safety of the whole vehicle. Temperature and humidity are important factors affecting the safety performance of the battery. Excessive humidity will cause short - circuit failure of electrical components inside the battery, and excessive temperature will affect the charge - discharge performance of the battery.

[0003] In the related art, the greater the charging power or discharging power of the battery, the more heat is generated. The excessive heat can heat the air inside the battery box, causing the ambient temperature of the battery to gradually rise, affecting the charge - discharge performance of the battery. In order to maintain the charge - discharge performance of the battery, liquid - cooled cooling pipes are usually arranged in a sealed battery box to cool the heat generated during the operation of the battery.

[0004] However, during the cooling process, the high - temperature water vapor inside the battery box condenses on the cooling pipes, easily causing short - circuits of other electrical components inside the battery box, resulting in poor safety of the battery. Summary of the Utility Model

[0005] The present application provides a battery environmental parameter adjustment device, a battery, and a vehicle to at least solve the technical problem of poor battery safety in the related art. The technical solutions of the present application are as follows:

[0006] According to the first aspect of the present application, a battery environmental parameter adjustment device is provided for regulating the environmental parameters of a battery. The battery may include a battery housing and an electric core disposed inside the battery housing. The battery environmental parameter adjustment device may include a temperature sensor, a control unit, a ventilation valve, and a fan assembly. The temperature sensor is disposed in the inner cavity of the battery housing; the control unit is electrically connected to the temperature sensor and receives the temperature information collected by the temperature sensor; the fan assembly is electrically connected to the control unit, and when the temperature information is higher than a first preset temperature, the control unit drives the fan assembly to start; the ventilation valve is disposed opposite to the fan assembly, one end of the ventilation valve is used to communicate with the external environment, and the other end of the ventilation valve can communicate with the cavity on one side of the fan assembly. Among them, the fan assembly has a first state and a second state, and the rotation direction of the fan assembly in the first state is opposite to that in the second state, so that the air inside the inner cavity can be discharged to the external environment through the ventilation valve, and the inner cavity is at least part of the cavity.

[0007] According to the above technical means, when the battery cell operates in a high-power mode for a long time, resulting in a relatively high air temperature inside the battery housing, the temperature sensor can collect the temperature information of the inner cavity and feedback it to the control unit. The control unit can drive the fan assembly to work in the first state (i.e., rotate forward), exhausting the high-temperature hot air inside the battery housing to the external environment through the air vent valve to complete rapid heat dissipation, preventing the continuous accumulation of heat inside the battery housing and causing the temperature to continue to rise. Then, it drives the fan assembly to work in the second state (i.e., rotate forward), sucking the air with a lower temperature in the external environment into the battery housing through the air vent valve to complete further cooling of the battery cell, avoiding the phenomenon of electrical component short-circuit caused by the condensation and liquefaction of the hot air after contacting the cooling pipes inside the battery housing or the condensation and liquefaction of the hot air after meeting the cold air entering the battery housing during the traditional cooling process, thereby effectively improving the safety of the battery.

[0008] It can be understood that after the fan assembly discharges the high-temperature hot air inside the battery housing to the external environment through the air vent valve, due to the openness of the external environment, the above high-temperature hot air will dissipate after entering the external environment and exchange heat with the external environment in forms such as heat convection, heat conduction, or heat radiation. Therefore, when the fan assembly works in the second state and sucks the air in the external environment into the battery housing, the inhaled air is not the same as the previously discharged high-temperature hot air, and the temperature of the inhaled air is lower than the temperature of the discharged high-temperature hot air, thereby realizing further cooling of the battery cell.

[0009] In a possible implementation manner, the fan assembly may include a plurality of fans and a plurality of first relays. The plurality of fans are connected in parallel, and at least one first relay is connected in series with a corresponding one of the fans. When the temperature information is higher than the first preset temperature, the control unit controls the plurality of first relays to close, so that the battery cell is electrically connected to the plurality of fans.

[0010] According to the above technical means, the control unit can control the start and stop of each corresponding fan by controlling the opening and closing states of each first relay. The plurality of fans connected in parallel can ensure that when some fans accidentally stop rotating, the other fans can still operate normally, thereby ensuring the cooling effect of the battery environment parameter adjustment device on the battery.

[0011] In a possible implementation manner, there are a plurality of air vent valves, and the plurality of air vent valves are all provided on the wall surface of the battery housing. At least one fan is provided at one end of the air vent valve facing the inner cavity. The fan can drive the air flow to act on the air vent valve in the first state, so that the air vent valve is conducted in the first direction. Wherein, the first direction is the direction from the inside of the battery housing to the outside of the battery housing.

[0012] According to the above technical means, multiple ventilation valves can promote the air pressure inside and outside the battery housing to reach a balanced state faster. If the vehicle travels from a high-altitude area to a low-altitude area, the external atmospheric pressure increases, and the multiple ventilation valves can allow air to enter the inner cavity and cavity of the battery housing faster through the permeable membrane inside the ventilation valve, which is beneficial to maintaining the safe operation of the battery cell. One or more fans can be provided at the end of the ventilation valve facing the inner cavity. When multiple fans are provided, the airflows generated by the multiple fans can act together on the permeable membrane inside the ventilation valve, making the pressure on the side of the permeable membrane facing the inner cavity greater, so as to facilitate the stable conduction of the permeable membrane in the first direction. After conduction, the multiple fans can also make the air inside the battery housing be discharged to the external environment faster through the corresponding ventilation valve, thereby improving the heat dissipation efficiency of the battery cell.

[0013] In a possible implementation manner, multiple fans are arranged at intervals along the circumferential direction of the battery cell inside the battery housing.

[0014] According to the above technical means, the present application can make the cooling effects at various positions inside the battery housing basically consistent, avoiding that some parts of the battery cell can be fully cooled while some other parts cannot be fully cooled, which is beneficial to improving the safety of the battery.

[0015] In a possible implementation manner, the battery environment parameter adjustment device may further include a heating component, which is connected in parallel with the fan component and electrically connected to the control unit. When the temperature information is lower than the second preset temperature, the control unit controls the heating component to start to increase the temperature inside the battery housing. Wherein, the second preset temperature is less than the first preset temperature.

[0016] According to the above technical means, the present application can heat the air inside the battery housing through the heating component to prevent the battery cell from reducing its operating power at low temperatures, and the heating component and the fan component can operate independently according to the specific situation of the actual application scenario.

[0017] In a possible implementation manner, the heating component may include a heating resistance wire and a second relay connected in series with the heating resistance wire. When the temperature information is lower than the second preset temperature, the control unit controls the second relay to close so that the battery cell is electrically connected to the heating resistance wire.

[0018] According to the above technical means, the control unit can control the start and stop of the heating resistance wire by controlling the opening and closing state of the second relay.

[0019] In a possible implementation manner, there may be multiple heating resistance wires, and at least one heating resistance wire is provided between each fan and the battery cell.

[0020] According to the above technical means, if the relative distance between the fan and the battery cell is short, only one heating resistance wire can be arranged. If the relative distance between the fan and the battery cell is long, one or two additional heating resistance wires can be arranged according to the actual length. In this way, when the fan blows the air flow in the battery housing, it can pass through the heating resistance wire multiple times, which is beneficial to quickly increase the ambient temperature of the battery cell.

[0021] In a possible implementation, the battery environment parameter adjustment device may further include a humidity sensor. The humidity sensor is electrically connected to the control unit and is arranged in the battery housing. When the detected value of the humidity sensor reaches the set humidity, the control unit controls the fan assembly to rotate, so that the humid air in the battery housing is discharged to the external environment.

[0022] According to the above technical means, the present application can timely discharge the humid air in the battery housing by the reverse rotation of the fan, maintain the dry environment inside the battery housing, and avoid the condensation of the humid air entering the battery housing through the ventilation valve under suitable conditions, which is beneficial to the safe operation of the battery. For the small amount of condensed water generated during the fast charging process of the battery, the present application can vaporize it in time through the heating component and discharge it from the battery housing through the fan, thus avoiding the short circuit of the electrical components caused by the accumulation of condensed water.

[0023] According to the second aspect of the present application, there is provided a battery including the above battery environment parameter adjustment device.

[0024] According to the third aspect of the present application, there is provided a vehicle including the above battery.

[0025] Therefore, the above technical features of the present application have the following beneficial effects:

[0026] (1) When the air temperature in the battery housing is high due to the long-term operation of the battery cell in the high-power mode, the temperature sensor can collect the temperature information of the inner cavity and feedback it to the control unit. The control unit can drive the fan assembly to work in the first state (i.e., rotate forward), discharge the high-temperature hot air in the battery housing to the external environment through the ventilation valve to complete rapid heat dissipation, avoid the continuous accumulation of heat in the battery housing resulting in a continuous increase in temperature, and then drive the fan assembly to work in the second state (i.e., rotate forward), suck the air with a lower temperature in the external environment into the battery housing through the ventilation valve, and complete the further cooling of the battery cell. It avoids the phenomenon of short circuit of electrical components caused by the condensation and liquefaction of hot air when it contacts the cooling pipeline in the battery housing or when it meets the cold air entering the battery housing in the traditional cooling process, thereby effectively improving the safety of the battery.

[0027] (2) The control unit in this application can control the start and stop of each corresponding fan by controlling the opening and closing states of each first relay. Multiple fans arranged in parallel can ensure that other fans can still operate normally after some fans stop rotating accidentally, thus ensuring the cooling effect of the battery environmental parameter adjustment device on the battery.

[0028] (3) Multiple ventilation valves in this application can promote the air pressure inside and outside the battery housing to reach a balanced state faster. If the vehicle travels from a high-altitude area to a low-altitude area, the external atmospheric pressure increases. Multiple ventilation valves can allow air to enter the inner cavity and cavity of the battery housing faster through the permeable membrane inside the ventilation valve, which is beneficial to maintaining the safe operation of the battery cells. One fan or multiple fans can be arranged at one end of the ventilation valve facing the inner cavity. When multiple fans are arranged, the airflows generated by the multiple fans can act together on the permeable membrane inside the ventilation valve, making the pressure on the side of the permeable membrane facing the inner cavity greater, so as to facilitate the stable conduction of the permeable membrane in the first direction. After conduction, the multiple fans can also make the air inside the battery housing be discharged to the external environment faster through the corresponding ventilation valves, thereby improving the heat dissipation efficiency of the battery cells.

[0029] (4) This application can make the cooling effects at various positions inside the battery housing remain basically the same, avoiding the situation where some parts of the battery cells can be fully cooled while other parts cannot, which is beneficial to improving the safety of the battery.

[0030] (5) This application can heat the air inside the battery housing through a heating component to prevent the battery cells from reducing their operating power at low temperatures. The heating component and the fan component can operate independently according to the specific situation of the actual application scenario.

[0031] (6) The control unit in this application can control the start and stop of the heating resistance wire by controlling the opening and closing states of the second relay.

[0032] (7) The fan in this application can blow the airflow inside the battery housing, making it pass through the heating resistance wire for multiple times, which is beneficial to quickly raising the ambient temperature of the battery cells.

[0033] (8) This application can timely discharge the humid air inside the battery housing through the reverse rotation of the fan, maintaining the dry internal environment of the battery housing, and avoiding the condensation of the humid air entering the battery housing through the ventilation valve under suitable conditions, which is beneficial to the safe operation of the battery. For a small amount of condensed water generated during the fast charging process of the battery, this application can vaporize it in time through the heating component and discharge it from the battery housing through the fan, thus avoiding the short circuit of electrical components caused by the accumulation of condensed water.

[0034] It should be noted that for the technical effects brought about by any of the implementation manners in the second aspect to the third aspect, reference may be made to the technical effects brought about by the corresponding implementation manners in the first aspect, which will not be elaborated herein.

[0035] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and do not limit this application. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The drawings herein are incorporated into the specification and form a part of the specification, showing embodiments consistent with this application, and are used together with the specification to explain the principles of this application, and do not constitute an improper limitation to this application.

[0037] Figure 1 FIG. 1 shows one of the electrical connection diagrams of the battery environment parameter adjustment device provided by an embodiment of this application;

[0038] Figure 2 FIG. 2 shows one of the structural diagrams of the battery environment parameter adjustment device provided by an embodiment of this application;

[0039] Figure 3 FIG. 3 shows another electrical connection diagram of the battery environment parameter adjustment device provided by an embodiment of this application;

[0040] Figure 4 FIG. 4 shows another structural diagram of the battery environment parameter adjustment device provided by an embodiment of this application;

[0041] Figure 5 FIG. 5 shows a third structural diagram of the battery environment parameter adjustment device provided by an embodiment of this application.

[0042] REFERENCE SIGNS:

[0043] Battery environment parameter adjustment device 1;

[0044] Temperature sensor 11;

[0045] Control unit 12;

[0046] Fan assembly 13; Fan 131; First relay 132;

[0047] Vent valve 14;

[0048] Heating assembly 15; Heating resistance wire 151; Second relay 152;

[0049] Humidity sensor 16;

[0050] Battery 2;

[0051] Battery housing 21; Inner cavity 211; Cavity 212; Electric core 22; Switch 23. Detailed implementation manners

[0052] In order to enable those of ordinary skill in the art to better understand the technical solutions of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

[0053] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned accompanying drawings are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application described here can be implemented in an order other than those illustrated or described here. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with the present application. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0054] With the popularization of new energy vehicles, the battery, as an important component of new energy vehicles, its safety performance affects the safety of the whole vehicle. Temperature and humidity are important factors affecting the safety performance of the battery. Excessive humidity will cause short-circuit failure of the electrical components inside the battery, and excessive temperature will affect the charging and discharging performance of the battery.

[0055] In the related art, the greater the charging power or discharging power of the battery, the more heat is generated. The excessive heat can heat the air inside the battery box, causing the ambient temperature of the battery to gradually rise, affecting the charging and discharging performance of the battery. In order to maintain the charging and discharging performance of the battery, liquid-cooling cooling pipes are usually arranged inside the sealed battery box to cool the heat generated during the operation of the battery.

[0056] However, during the cooling process, the high-temperature water vapor inside the battery box condenses on the cooling pipes, easily causing short circuits in other electrical components inside the battery box, resulting in poor safety of the battery.

[0057] Based on this, the present application provides a battery environmental parameter adjustment device, a battery and a vehicle, which can improve the safety of the battery. For the convenience of understanding, the battery environmental parameter adjustment device provided by the present application will be specifically introduced below with reference to the accompanying drawings.

[0058] Figure 1 FIG. 1 shows one of the electrical connection diagrams of the battery environmental parameter adjustment device provided by an embodiment of the present application. Figure 2 FIG. 2 shows one of the structural diagrams of the battery environmental parameter adjustment device provided by an embodiment of the present application. Referring jointly to Figure 1 and Figure 2, according to the first aspect of the present application, a battery environmental parameter adjustment device 1 is provided for regulating the environmental parameters of a battery 2. The environmental parameters may include physical parameters such as temperature, humidity, and pressure. The environmental parameters can affect the operating safety and efficiency of the battery 2. The battery 2 may include a battery housing 21 and battery cells 22 disposed within the battery housing 21. The battery environmental parameter adjustment device provided by the present application can be applicable to different batteries such as power batteries or starting batteries.

[0059] The battery environmental parameter adjustment device 1 provided by the present application may include a temperature sensor 11, a control unit 12, a fan assembly 13, and a breather valve 14. The temperature sensor 11 is disposed in the inner cavity 211 of the battery housing 21 for detecting the temperature information of the air in the inner cavity. The control unit 12 is electrically connected to the temperature sensor 11, and the control unit 12 can receive the temperature information collected by the temperature sensor 11. The fan assembly 13 is electrically connected to the control unit 12. When the temperature information is higher than the first preset temperature, the control unit 12 drives the fan assembly 13 to start. The breather valve 14 is disposed opposite to the fan assembly 13. One end of the breather valve 14 is used to communicate with the external environment, and the other end of the breather valve 14 can communicate with the cavity 212 on one side of the fan assembly 13.

[0060] Among them, the fan assembly 13 has a first state and a second state. In the first state, the fan assembly 13 rotates in the reverse direction, so that the air in the battery housing 21 is discharged to the external environment; in the second state, the fan assembly 13 rotates in the forward direction, so that the air in the external environment enters the battery housing 21. The inner cavity 211 is at least part of the cavity 212. It should be noted that the breather valve 14 has a breathable membrane inside. Under normal circumstances, the breathable membrane conducts unidirectionally, and the environmental air outside the battery housing 21 can penetrate through the breathable membrane into the interior of the battery housing 21, so as to maintain the air pressure balance on both sides of the battery housing 21; and when the fan assembly 13 operates in the first state (i.e., rotates in the reverse direction), it can drive the air flow to act on the breathable membrane to form a large air pressure, so that the breathable membrane can also conduct in the first direction F1 (the direction pointing from the inside of the battery housing 21 to the outside of the battery housing 21) as shown in Figure 2 shown. The air flow in the battery housing 21 can be discharged to the external environment through the breather valve 14 from the inner cavity 211 under the driving action of the fan assembly 13.

[0061] Thus, when the battery cell 22 operates in the high-power mode for a long time, resulting in a relatively high air temperature inside the battery housing 21, the temperature sensor 11 can collect the temperature information of the inner cavity 211 and feedback it to the control unit 12. The control unit 12 can drive the fan assembly 13 to work in the first state, exhausting the high-temperature hot air inside the battery housing 21 to the external environment through the air permeable valve 14 to complete rapid heat dissipation, preventing the heat inside the battery housing 21 from continuously accumulating and causing the temperature to continue to rise. Then, the control unit 12 drives the fan assembly 13 to work in the second state (i.e., rotate forward), sucking the air with a lower temperature in the external environment into the battery housing 21 through the air permeable valve 14 to complete further cooling of the battery cell 22, avoiding the phenomenon that in the traditional cooling process, the hot air condenses and liquefies after meeting the cold air entering the battery housing 21, generating condensate water and causing a short circuit of the electrical components, thereby effectively improving the safety of the battery 2.

[0062] It should be noted that if the driving motor of the fan assembly 13 is a three-phase asynchronous motor, changing the phase sequence of the power supply can enable the fan assembly 13 to switch between the forward rotation and reverse rotation states; if the driving motor of the fan assembly 13 is a stepper motor, reversing the output voltage, the pin originally connected to the high level becomes the low level, and the pin originally connected to the low level becomes the high level, which can achieve the switching of the fan assembly 13 between the forward rotation and reverse rotation states.

[0063] It can be understood that after the fan assembly 13 discharges the high-temperature hot air inside the battery housing 21 to the external environment through the air permeable valve 14, due to the openness of the external environment, the above-mentioned high-temperature hot air will disperse after entering the external environment and exchange heat with the external environment in forms such as heat convection, heat conduction, or heat radiation. Therefore, when the fan assembly 13 works in the second state and sucks the air in the external environment into the battery housing 21, the inhaled air is not the same as the previously discharged high-temperature hot air, and the temperature of the inhaled air is lower than the temperature of the discharged high-temperature hot air, thereby achieving further cooling of the battery cell 22.

[0064] Figure 3FIG. 2 shows a second electrical connection schematic diagram of the battery environment parameter adjustment device provided by an embodiment of the present application. In some embodiments of the present application, the fan assembly 13 may include a plurality of fans 131 and a plurality of first relays 132. The plurality of fans 131 are arranged in parallel, and at least one first relay 132 is connected in series with one fan 131. When the temperature information is higher than the first preset temperature, the control unit 12 controls the plurality of first relays 132 to close, so that the battery cell 22 is electrically connected to the plurality of fans 131. Exemplarily, a first relay 132 may be connected in series in each branch where a fan 131 is located, or two first relays 132 may be connected in parallel and then connected in series with one fan 131, so as to ensure that when a single first relay 132 fails, the control unit 12 can effectively control the corresponding fan 131 through another first relay 132.

[0065] It can be understood that after closing the switch 23 and electrically connecting the battery cell 22 to the plurality of first relays 132, the control unit 12 can control the start and stop of each corresponding fan 131 by controlling the on-off state of each first relay 132. The plurality of fans 131 arranged in parallel can ensure that when some fans accidentally stop rotating, the other fans can still operate normally, so as to ensure the cooling effect of the battery environment parameter adjustment device 1 on the battery 2.

[0066] Figure 4 FIG. 3 shows a second structural schematic diagram of the battery environment parameter adjustment device provided by an embodiment of the present application. In some embodiments of the present application, the plurality of fans 131 are circumferentially and spacedly arranged inside the battery housing 21 around the battery cell 22. In this way, the cooling effects at various positions inside the battery housing 21 can be kept basically the same, avoiding that one part of the battery cell 22 can be fully cooled while the other part cannot be fully cooled, which is beneficial to improving the safety of the battery 2.

[0067] It should be noted that the plurality of fans 131 can be circumferentially and spacedly arranged around the battery cell 22 as shown in Figure 4 FIG. 3, or can be appropriately adjusted according to the overall layout inside the battery housing 21 and installed at the gap positions between parts. In addition, each fan 131 can rotate forward or backward according to specific regulation requirements, or a part of the fans 131 only rotate forward while the other part of the fans 131 only rotate backward, and the temperature inside the battery housing 21 can also be effectively regulated.

[0068] Continue to refer to Figure 4, in some embodiments of the present application, there are multiple ventilation valves 14, and the multiple ventilation valves 14 are all arranged on the wall surface of the battery housing. At least one fan 131 is provided at one end of the ventilation valve 14 facing the inner cavity 211. The fan 131 can drive air flow to act on the ventilation valve in the first state, so that the ventilation valve 14 is conducted in the first direction. Wherein, the first direction is the direction from the inside of the battery housing 21 to the outside of the battery housing 21.

[0069] It can be understood that multiple ventilation valves 14 can promote the air pressure inside and outside the battery housing 21 to reach a balanced state faster. For example, if the vehicle travels from a high-altitude area to a low-altitude area, the external atmospheric pressure increases, and the multiple ventilation valves 14 can allow air to enter the inner cavity 211 and the cavity 212 of the battery housing 21 faster through the permeable membrane in the ventilation valve 14, which is beneficial to maintaining the safe operation of the battery cell 22. One fan 131 can be provided at one end of the ventilation valve 14 facing the inner cavity 211, or multiple fans 131 can be provided. When multiple fans 131 are provided, the air flows generated by the multiple fans 131 can act on the permeable membrane in the ventilation valve 14 together, making the pressure on the side of the permeable membrane facing the inner cavity greater, so as to facilitate the stable conduction of the permeable membrane in the first direction. After conduction, the multiple fans 131 can also make the air in the battery housing 21 be discharged to the external environment faster through the corresponding ventilation valve 14, thereby improving the heat dissipation efficiency of the battery cell 22.

[0070] The above part describes in detail the heat dissipation mechanism of the battery 2 in the present application. In some relatively harsh working condition scenarios, such as the low temperature in winter in the northern region, it is not conducive to the startup of the battery 2 and the operation at the rated power after startup. At this time, it is necessary to raise the working environment temperature of the battery 2 in order to overcome the adverse conditions and maintain the stable operation of the battery 2. The temperature adjustment of the battery 2 in the present application will be further described below.

[0071] Continue to refer to Figure 1 and Figure 2 , in some embodiments of the present application, the battery environment parameter adjustment device 1 may further include a heating component 15. The heating component 15 is connected in parallel with the fan component 13 and is electrically connected to the control unit 12. When the temperature information is lower than the second preset temperature (the second preset temperature is less than the first preset temperature), the control unit 12 controls the heating component 15 to start. The heating component 15 can heat the air in the battery housing 21, thereby raising the temperature of the working environment of the battery cell 22 and preventing the battery cell 22 from reducing the operating power at low temperature. In addition, since the heating component 15 and the fan component 13 are connected in parallel, the heating component 15 and the fan component 13 can operate independently according to the specific situation of the actual application scenario.

[0072] Exemplarily, when the battery 2 needs to dissipate heat in a high-temperature environment in summer, the fan assembly 13 can be turned on only to discharge the hot air accumulated in the battery housing 21 to the external environment through the air permeable valve.

[0073] Exemplarily, when the battery 2 needs to be heated in a low-temperature environment in winter, the heating assembly 15 can be turned on only to heat the air in the battery housing 21.

[0074] Exemplarily, when the battery 2 needs to be heated in a low-temperature environment in winter, the fan assembly 13 and the heating assembly 15 can be turned on simultaneously. The fan assembly 13 can blow the air heated by the heating assembly 15, so that the temperature gradient at each position in the battery housing 21 is maintained within a small range. It should be noted that, on the one hand, after the heating assembly 15 is turned on, due to the thermal expansion and contraction of the gas, the air pressure in the battery housing 21 will increase, making the air pressure in the battery housing 21 greater than the air pressure outside the battery housing 21, and the air (relatively low pressure) in the external environment of the battery housing 21 cannot enter the inside (relatively high pressure) of the battery housing 21; on the other hand, due to the one-way conduction of the air permeable valve 14, when the fan assembly 13 rotates forward, it cannot drive the air flow to generate a pressure acting on the air permeable valve 14, and the air permeable valve 14 is not conductive in the first direction, and the air in the internal environment of the battery housing 21 cannot enter the inside of the battery housing 21 through the air permeable valve 14. Therefore, after the fan assembly 13 is turned on, the inside of the battery housing 21 is mainly in an internal circulation state, and the air heated by the heating assembly 15 can continuously flow inside the battery housing 21 under the action of the fan assembly 13, promoting the temperature inside the battery housing 21 to reach an equilibrium state.

[0075] Continue to refer to Figure 1 In some embodiments of the present application, the heating assembly 15 may include a heating resistance wire 151 and a second relay 152 connected in series with the heating resistance wire 151. When the temperature information is lower than the second preset temperature, the control unit 12 controls the second relay 152 to close, so that the battery cell 22 is electrically connected to the heating resistance wire 151. In this way, the control unit 12 can control the start and stop of the heating resistance wire 151 by controlling the opening and closing state of the second relay 152.

[0076] It should be noted that the above-mentioned first relay 132 and second relay 152 can be selected as electromagnetic relays, induction relays or rectifier relays according to actual application requirements. The specific setting of the second relay 152 is similar to that of the first relay 132. A second relay 152 can be connected in series in each branch where the heating resistance wire 151 is located, or two second relays 152 can be connected in parallel and then connected in series with a heating resistance wire 151, so as to ensure that when a single second relay 152 fails, the control unit 12 can effectively control the corresponding heating resistance wire 151 through another first relay 152.

[0077] Figure 5 FIG. 3 shows a schematic structural diagram of a battery environmental parameter adjustment device provided by an embodiment of the present application. Referring to Figure 5 , in some embodiments of the present application, at least one heating resistance wire 151 is disposed between each fan 131 and the battery cell 22.

[0078] It can be understood that if the relative distance between the fan 131 and the battery cell 22 is short, only one heating resistance wire 151 can be arranged. If the relative distance between the fan 131 and the battery cell 22 is long, one or two additional heating resistance wires 151 can be arranged according to the actual length. In this way, when the fan 131 blows the air flow in the battery housing 21, it can pass through the heating resistance wire 151 multiple times, which is beneficial to quickly increase the environmental temperature of the battery cell 22.

[0079] The above part is the temperature control of the battery by the battery environmental parameter adjustment device 1 provided by the present application. The following will describe the humidity control of the battery 2 in detail.

[0080] Continuing to refer to Figure 1 and Figure 2 , in some embodiments of the present application, the battery environmental parameter adjustment device 1 may further include a humidity sensor 16. The humidity sensor 16 is electrically connected to the control unit 12 and is disposed inside the battery housing 21. When the detected value of the humidity sensor 16 reaches the set humidity, the control unit 12 can control the fan 131 to rotate in the reverse direction, so that the breathable membrane in the air vent valve 14 can conduct along the first direction F1, driving the humid air in the battery housing 21 to be discharged to the external environment through the breathable membrane, thereby preventing the humid air from adhering to the electrical components, resulting in corrosion or short circuit of the electrical components, and ensuring the safe operation of the battery 2.

[0081] It should be noted that the moisture in the battery housing 21 mainly comes from the external environment. When the vehicle is driving in a wading road condition, the humid air enters the battery housing 21 through the air vent valve 14, which will cause a change in the humidity inside the battery housing 21. In addition, during the fast charging process of the battery 2, if the surface temperature of the battery housing 21 is lower than the dew point temperature of the surrounding air, the condensed water generated after evaporation will also cause a change in the humidity inside the battery housing 21.

[0082] In this way, the present application can timely discharge the humid air in the battery housing 21 by the reverse rotation of the fan 131, maintain the dry environment inside the battery housing 21, and avoid the condensation of the humid air entering the battery housing 21 through the air vent valve 14 under suitable conditions, which is beneficial to the safe operation of the battery 2. For the small amount of condensed water generated during the fast charging process of the battery 2, the present application can vaporize it in time through the heating component 15 and discharge it from the battery housing 21 through the fan 131, thereby avoiding the short circuit of the electrical components caused by the accumulation of condensed water.

[0083] It should be noted that in this application, a temperature and humidity sensor can be set to detect the temperature and humidity inside the battery case 21 simultaneously, or a temperature sensor 11 and a humidity sensor 16 can be set. The temperature sensor 11 is solely used to detect the temperature inside the battery case 21, and the humidity sensor 16 is solely used to detect the humidity inside the battery case 21. According to the second aspect of this application, a battery 2 is also provided, and this battery 2 includes the above-mentioned battery environment parameter adjustment device 1.

[0084] According to the third aspect of this application, a vehicle is also provided, and this vehicle includes the above-mentioned battery 2.

[0085] For the technical effects brought by any implementation manner in the second aspect to the third aspect, reference can be made to the technical effects brought by the corresponding implementation manner in the first aspect, which will not be elaborated here.

[0086] Although this application has been described in combination with various embodiments herein, however, in the process of implementing the claimed application, those skilled in the art can understand and achieve other variations of the disclosed embodiments by viewing the drawings, the disclosed content, and the appended claims. In the claims, the word "comprising" does not exclude other components or steps, and "a" or "one" does not exclude a plurality of cases. A single processor or other unit can implement several functions recited in the claims. Certain measures are recited in mutually different dependent claims, but this does not mean that these measures cannot be combined to produce good results.

[0087] Although this application has been described in combination with specific features and their embodiments, it is obvious that various modifications and combinations can be made without departing from the spirit and scope of this application. Accordingly, this specification and the drawings are merely exemplary descriptions of this application defined by the appended claims, and are considered to have covered any and all modifications, variations, combinations, or equivalents within the scope of this application. Obviously, those skilled in the art can make various changes and modifications to this application without departing from the spirit and scope of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalent technologies, this application is also intended to include these changes and modifications.

[0088] The above is only the specific implementation manner of this application, but the protection scope of this application is not limited thereto. Any change or replacement within the technical scope disclosed in this application should be covered by the protection scope of this application. Therefore, the protection scope of this application shall be subject to the protection scope of the claims.

Claims

1. A battery environmental parameter adjustment device (1) for regulating the environmental parameters of a battery (2), characterized in that, The battery (2) includes a battery housing (21) and a battery cell (22) disposed within the battery housing (21); the battery environmental parameter adjustment device (1) includes: A temperature sensor (11) disposed in the inner cavity (211) of the battery housing (21); A control unit (12) electrically connected to the temperature sensor (11) to receive the temperature information collected by the temperature sensor (11); A fan assembly (13) electrically connected to the control unit (12), and when the temperature information is higher than a first preset temperature, the control unit (12) drives the fan assembly (13) to start; And a breather valve (14) disposed opposite to the fan assembly (13), one end of the breather valve (14) is used to communicate with the external environment, and the other end of the breather valve (14) can communicate with the cavity (212) on one side of the fan assembly (13); Wherein, the fan assembly (13) has a first state and a second state, and the rotation direction of the fan assembly (13) in the first state is opposite to the rotation direction in the second state, so that the air in the inner cavity (211) can be discharged to the external environment through the breather valve (14), and the inner cavity (211) is at least part of the cavity (212).

2. The battery environment parameter adjustment device (1) according to claim 1, characterized in that, The fan assembly (13) includes: A plurality of fans (131), and the plurality of fans (131) are connected in parallel; A plurality of first relays (132), at least one of the first relays (132) is connected in series with one of the fans (131), and when the temperature information is higher than a first preset temperature, the control unit (12) controls the plurality of first relays (132) to close, so that the battery cell (22) is electrically connected to the plurality of fans (131).

3. The battery environment parameter adjustment device (1) according to claim 2, characterized in that, The breather valve (14) is plural, and the plural breather valves (14) are all disposed on the wall surface of the battery housing; At least one of the fans (131) is disposed at one end of the breather valve (14) facing the inner cavity (211), and the fan (131) in the first state can drive the air flow to act on the breather valve, so that the breather valve (14) is conducted in a first direction; Wherein, the first direction is the direction from the inside of the battery housing (21) to the outside of the battery housing (21).

4. The battery environment parameter adjustment device (1) according to claim 2, characterized in that, The plurality of fans (131) are circumferentially and spaced around the battery cell (22) and disposed inside the battery housing (21).

5. The battery environment parameter adjusting device (1) according to any one of claims 2-4, characterized in that, The battery environmental parameter adjustment device (1) further includes: A heating assembly (15), the heating assembly (15) is connected in parallel with the fan assembly (13) and electrically connected to the control unit (12); When the temperature information is lower than a second preset temperature, the control unit (12) controls the heating assembly (15) to start to increase the temperature inside the battery housing (21); Wherein, the second preset temperature is less than the first preset temperature.

6. The battery environment parameter adjusting device (1) according to claim 5, characterized in that, The heating assembly (15) includes: a heating resistance wire (151) and a second relay (152) connected in series with the heating resistance wire (151); When the temperature information is lower than the second preset temperature, the control unit (12) controls the second relay (152) to close, so that the battery cell (22) is electrically connected to the heating resistance wire (151).

7. The battery environment parameter adjustment device (1) according to claim 6, characterized in that, There are multiple heating resistance wires (151), and at least one heating resistance wire (151) is arranged between each fan (131) and the battery cell (22).

8. The battery environment parameter adjustment device (1) according to claim 1, characterized in that, The battery environment parameter adjusting device (1) further includes: a humidity sensor (16), electrically connected to the control unit (12) and arranged inside the battery housing (21); When the detected value of the humidity sensor (16) reaches the set humidity, the control unit (12) controls the fan assembly (13) to rotate, so that the humid air inside the battery housing (21) is discharged to the external environment.

9. A battery (2), characterized in that, The battery (2) includes the battery environment parameter adjusting device (1) according to any one of claims 1-8.

10. A vehicle, characterized in that, The vehicle includes the battery (2) according to claim 9.

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