Temperature adjusting system, battery equipment and temperature adjusting method

Abstract

The invention discloses a temperature adjusting system, a battery device and a temperature adjusting method, the temperature adjusting system comprises a first container, a temperature adjusting member and a pipe body, the first container stores a luminescent substance, the temperature adjusting member is internally provided with a flow channel for circulation of a temperature adjusting medium, and the flow channel wall of the flow channel is provided with a temperature adjusting layer; the tube body is connected with the first container and assembled in the flow channel, at least part of the tube body is light-permeable, and the tube body is used for conveying the luminous substance in the first container into the flow channel; and the temperature adjusting layer generates heat under the action of light generated by the luminous substance so as to heat the temperature adjusting medium. According to the temperature adjusting system, the temperature adjusting medium can be independently heated when the temperature of the battery is too low, and the situation that heating power is occupied by an air conditioner and the like, and heating of the battery is affected is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of temperature regulation, and in particular, to a temperature regulation system, a battery device, and a temperature regulation method. Background Art

[0002] In recent years, the new energy vehicle industry has developed rapidly. In order to ensure the operating performance of power batteries, the power batteries need to be thermally managed by means of liquid cooling during use. However, in cold weather in the north, when the vehicle is cold-started, the in-vehicle air conditioner is often turned on at the same time. This makes the overall heating power mainly focused on the in-vehicle air conditioner, resulting in limited heating power allocated to the battery, greatly delaying the heating rate of the battery. When the battery temperature remains too low, the battery life will be greatly reduced and the charging time will be longer, reducing the overall vehicle use experience of users. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems in the related art to some extent.

[0004] To this end, an embodiment of the present invention provides a temperature regulation system. This temperature regulation system can independently heat the temperature regulation medium when the battery temperature is too low, avoiding the situation where the heating power is occupied by the air conditioner or the like and affecting the heating of the battery. Secondly, the temperature regulation system of the embodiment of the present invention can be improved by modifying the original liquid cooling system, and has good adaptability to the existing liquid cooling system. In addition, heat can be generated through the interaction between the light-emitting substance and the temperature regulation layer, avoiding the consumption of vehicle body energy and realizing energy conservation and environmental protection in heating.

[0005] An embodiment of the present invention also provides a battery device including the above temperature regulation system.

[0006] An embodiment of the present invention also provides a temperature regulation method based on the above temperature regulation system.

[0007] The temperature regulation system of the embodiment of the present invention includes:

[0008] A first container storing a light-emitting substance;

[0009] A temperature regulation member with a flow channel for the temperature regulation medium to flow through, and a temperature regulation layer is provided on the flow channel wall of the flow channel;

[0010] A pipe body connected to the first container and assembled in the flow channel. At least part of the pipe body is light-transmissive, and the pipe body is used to transport the light-emitting substance in the first container into the flow channel. The temperature regulation layer generates heat under the action of the light generated by the light-emitting substance to realize the heating of the temperature regulation medium.

[0011] In some embodiments, it includes:

[0012] A second container, which is connected to the tube body and stores a first regulating substance for incorporation into the luminescent substance to enhance the effective action of the luminescent substance on the temperature regulating layer and increase the heat generated by the temperature regulating layer;

[0013] A third container, which is connected to the tube body and stores a second regulating substance for incorporation into the luminescent substance to reduce the effective action of the luminescent substance on the temperature regulating layer and decrease the heat generated by the temperature regulating layer.

[0014] In some embodiments, the second regulating substance reduces the heat generated by the temperature regulating layer by neutralizing the first regulating substance;

[0015] and / or, the wavelength of the light generated by the luminescent substance is negatively correlated with the heat generated by the temperature regulating layer, and the first regulating substance is used to reduce the wavelength of the light;

[0016] and the heat Q generated by the temperature regulating layer is:

[0017]

[0018] In the formula, Q represents the heat emitted by the temperature regulating layer after absorbing light per unit time; n represents the number of photons absorbed by the temperature regulating layer; E represents the photon energy; h represents Planck's constant; c represents the speed of light in a vacuum; λ represents the wavelength of the light.

[0019] In some embodiments, the luminescent substance is a fluorescent agent, the first regulating substance is an acidic reagent, and the second regulating substance is a basic reagent;

[0020] and / or, the first container, the second container, and the third container are integrally formed;

[0021] and / or, the tube body is a nano-encapsulation tube;

[0022] and / or, the temperature regulating layer is a photo-thermal fiber.

[0023] In some embodiments, the tube body includes:

[0024] An inlet pipe section and an outlet pipe section, both of which are located outside the temperature regulating member. The inlet pipe section and the outlet pipe section are both connected to the first container to realize the circulating transportation of the luminescent substance in the first container, and the second container and the third container are both connected to the inlet pipe section;

[0025] An intermediate pipe section, which is connected between the inlet pipe section and the outlet pipe section. The intermediate pipe section is assembled in the flow channel and is light-transmissive.

[0026] In some embodiments, it includes:

[0027] A first valve, which is arranged on the liquid inlet pipe section and is used to control the on-off of the liquid inlet pipe section;

[0028] A first branch and a second valve, the first branch is connected between the second container and the liquid inlet pipe section, and the second valve is arranged on the first branch and is used to control the on-off of the first branch;

[0029] A second branch and a third valve, the second branch is connected between the third container and the liquid inlet pipe section, and the third valve is arranged on the second branch and is used to control the on-off of the second branch;

[0030] A first sensor, which is arranged at the inlet and / or outlet of the flow channel, and the first sensor is used to monitor the temperature of the temperature-adjusting medium;

[0031] A second sensor, which is arranged on the pipe body, and the second sensor is used to monitor the concentrations of the luminescent substance, the first regulating substance, and the second regulating substance.

[0032] In some embodiments, it includes a pump body, the pump body is connected to the liquid inlet pipe section, and the pump body is used to empty the luminescent substance in the pipe when the temperature of the temperature-adjusting medium does not require temperature adjustment.

[0033] The battery device of the embodiment of the present invention includes a battery pack and the temperature control system as described in any of the above embodiments, and the temperature control member is attached to the battery pack and is used to adjust the temperature of the battery pack through the temperature-adjusting medium flowing inside.

[0034] The temperature control method of the embodiment of the present invention includes the following steps:

[0035] Monitor the operating parameters of the battery device;

[0036] Judge whether the operating temperature of the battery device meets the conditions according to the monitored operating parameters. If the conditions are met, maintain the current operating state of the battery device; if the conditions are not met, introduce the luminescent substance into the pipe;

[0037] After the luminescent substance is introduced into the pipe, judge whether the change amount of the operating temperature of the battery device meets the conditions. If the conditions are met, block the introduction of the luminescent substance into the pipe; if the conditions are not met, incorporate the first regulating substance into the luminescent substance;

[0038] After the first regulating substance is introduced into the tube body, it is determined again whether the change amount of the operating temperature of the battery device meets the condition. If the condition is met, the introduction of the first regulating substance into the tube body is blocked, and then the second regulating substance is introduced into the tube body. If the condition is not met, the introduction amount of the first regulating substance into the tube body is increased.

[0039] In some embodiments, the situations of determining whether the operating temperature of the battery device meets the condition according to the monitored operating parameters include at least one of the following:

[0040] The inlet water temperature of the temperature regulating medium of the temperature regulating member < the requested water temperature of the battery management system of the battery device;

[0041] The lower limit value of the temperature rise rate of the battery cells of the battery device < 0.5 °C / min;

[0042] The growth rate of the low-temperature charging time of the battery device compared to the normal-temperature charging time > 50%.

[0043] Beneficial effects: The temperature regulating system, battery device and temperature regulating method of the embodiments of the present invention. The temperature regulating system can independently heat the temperature regulating medium when the battery temperature is too low, avoiding the situation that the heating power is occupied by the air conditioner or the like and affecting the heating of the battery.

[0044] Secondly, the temperature regulating system of the embodiments of the present invention can be improved by modifying the original liquid cooling system, and has good adaptability to the existing liquid cooling system.

[0045] In addition, heat can be generated through the interaction between the light-emitting substance and the temperature regulating layer, avoiding the consumption of vehicle body energy and achieving energy conservation and environmental protection in heating. Description of the Drawings

[0046] Figure 1 is a schematic diagram of the overall structure of the temperature regulating system of the embodiments of the present invention.

[0047] Figure 2 is a logic block diagram of the temperature regulating method of the embodiments of the present invention.

[0048] Reference Signs:

[0049] 1 - First container;

[0050] 2 - Temperature regulating member; 21 - Flow channel; 22 - Temperature regulating layer;

[0051] 3 - Tube body; 31 - Liquid inlet pipe section; 32 - Liquid outlet pipe section; 33 - Intermediate pipe section; 34 - First valve; 35 - First branch; 36 - Second valve; 37 - Second branch; 38 - Third valve;

[0052] 4 - Second container; 5 - Third container; 6 - Pump body; 7 - First sensor. Detailed implementation manners

[0053] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, but should not be construed as limiting the present invention.

[0054] The present invention is made based on the inventor's discovery and understanding of the following facts and problems:

[0055] In the prior art, since most of the heating power is used for the operation of the in-vehicle air conditioner, the temperature control medium in the liquid cooling plate for heating the battery is relatively low due to factors such as low heating power, thus failing to meet the usage requirement of quickly heating the battery, and further easily causing the situation where the battery temperature remains too low.

[0056] The temperature control system of the embodiments of the present invention will be described below.

[0057] As Figure 1 shown, the temperature control system of the embodiments of the present invention includes a first container 1, a temperature control member 2, and a pipe body 3.

[0058] The first container 1 stores a luminescent substance. The material of the first container 1 can be plastic, glass, etc., and the first container 1 can be in a structure such as a can shape or a bottle shape. The luminescent substance can be a substance that can generate light by itself, specifically, a fluorescent agent, etc., and the luminescent substance can be stored in the first container 1 in advance.

[0059] The temperature control member 2 is provided with a flow channel 21 for the temperature control medium to flow through, and a temperature control layer 22 is provided on the flow channel wall of the flow channel 21. For example, as Figure 1 shown, the temperature control member 2 can be in a plate shape, specifically, a liquid cooling plate, etc. A flow channel 21 can be provided in the temperature control member 2, and the temperature control medium can be a liquid such as water. During use, the temperature control medium can flow into the flow channel 21 through the inlet of the flow channel 21, and then can be discharged through the outlet of the flow channel 21.

[0060] Among them, both the inlet and the outlet of the flow channel 21 can be provided on the left side of the temperature control member 2. The flow channel 21 can extend in a reciprocating and bending manner in the temperature control member 2, and a temperature control layer 22 can be laid on the entire flow channel wall of the flow channel 21. It should be noted that the temperature control layer 22 has the characteristic of generating heat under the action of light. For example, the material of the temperature control layer 22 can specifically be a photothermal fiber.

[0061] In some other embodiments, the temperature control layer 22 can also be arranged on a part of the flow wall of the flow channel 21. For example, the temperature control layer 22 can be provided in multiple sections along the extension direction of the flow channel 21, and adjacent two temperature control layers 22 can be arranged at intervals.

[0062] The tube body 3 is connected to the first container 1 and assembled in the flow channel 21. At least part of the tube body 3 is light-transmissive, and the tube body 3 is used to transport the luminescent substance in the first container 1 into the flow channel 21. The temperature regulation layer 22 generates heat under the action of the light generated by the luminescent substance to heat the temperature regulation medium.

[0063] For example, as Figure 1 shown, the material of the tube body 3 can be a nano-encapsulated tube, etc. The tube body 3 can penetrate into the flow channel 21 from the inlet of the flow channel 21. After the tube body 3 passes through the flow channel 21, a part of the tube body 3 can penetrate out from the outlet of the flow channel 21. The whole tube body 3 can have the property of allowing light to pass through.

[0064] Both ends of the tube body 3 can be connected to the first container 1, that is, the first container 1 and the tube body 3 can form a closed loop. In use, the luminescent substance in the first container 1 can be transported into the flow channel 21 via the tube body 3. The light generated by the luminescent substance located in the flow channel 21 will pass through the tube wall of the tube body 3 and directly act on the temperature regulation layer 22, and the temperature regulation layer 22 will generate heat under the irradiation of light, so as to meet the use requirement of heating the temperature regulation medium.

[0065] The temperature regulation system of the embodiment of the present invention can independently heat the temperature regulation medium when the battery temperature is too low, avoiding the situation that the heating power is occupied by the air conditioner or the like and affecting the heating of the battery.

[0066] Secondly, the temperature regulation system of the embodiment of the present invention can be improved by modifying the original liquid cooling system, and has good adaptability to the existing liquid cooling system.

[0067] In addition, heat can be generated through the interaction between the luminescent substance and the temperature regulation layer 22, avoiding the consumption of vehicle body energy and realizing the energy conservation and environmental protection of heating the temperature regulation medium.

[0068] In some embodiments, as Figure 1 shown, the temperature regulation system includes a second container 4 and a third container 5, and both the second container 4 and the third container 5 can be connected to the above-mentioned tube body 3.

[0069] The second container 4 stores a first regulating substance, and the first regulating substance is used to be incorporated into the luminescent substance to enhance the effective action of the luminescent substance on the temperature regulation layer 22 and increase the heat generated by the temperature regulation layer 22.

[0070] For example, the material of the second container 4 can also be plastic, glass, etc. The first regulating substance can be a substance that can enhance the intensity or total amount of the light generated by the luminescent substance. After the above-mentioned luminescent substance is introduced into the tube body 3, due to the limitation of the space in the tube body 3, the total amount of the luminescent substance introduced into the tube body 3 will also be limited, that is, the total amount of light of the luminescent substance used to promote the heat generation of the temperature regulating layer 22 will also be limited. At this time, by introducing the first regulating substance, the self-environment of the luminescent substance can be changed, etc., so that the intensity or total amount of the light generated by the luminescent substance can be increased, and thus the heat generated by the temperature regulating layer 22 can be further increased, and then the heating efficiency of the temperature regulating medium can be improved.

[0071] The third container 5 stores a second regulating substance, and the second regulating substance is used to be incorporated into the luminescent substance to reduce the effective action of the luminescent substance on the temperature regulating layer 22 and reduce the heat generated by the temperature regulating layer 22.

[0072] For example, the material of the second container 4 can also be plastic, glass, etc. The second regulating substance can be a substance that can weaken the intensity or total amount of the light generated by the luminescent substance. When it is no longer necessary to continue heating the temperature regulating medium or the heating power of the temperature regulating layer 22 is too high, the second regulating substance can be introduced into the tube body 3. Under the action of the second regulating substance, the intensity, total amount, etc. of the light generated by the luminescent substance can be reduced, so that the heat generated by the temperature regulating layer 22 can be reduced, and then the heating power of the temperature regulating medium can be reduced.

[0073] Thus, by adding the above-mentioned first regulating substance and second regulating substance, the heating efficiency of the temperature regulating medium can be adjusted, and thus the controllability of the heating of the temperature regulating medium is realized.

[0074] In some embodiments, the second regulating substance reduces the heat generated by the temperature regulating layer 22 by neutralizing the first regulating substance. For example, the first regulating substance can be an acidic reagent, and the second regulating substance can be a basic reagent. After the first regulating substance is incorporated into the luminescent substance, the acid-base neutralization of the first regulating substance can be realized by introducing the second regulating substance, so that the pH value environment of the luminescent substance can be adjusted, and then the heat generated by the temperature regulating layer 22 can be reduced.

[0075] In some other embodiments, the second regulating substance can also be a substance that directly acts on the temperature regulating layer 22, and the heat generated by the temperature regulating layer 22 can also be reduced through this direct action.

[0076] In some embodiments, the wavelength of the light generated by the luminescent substance is negatively correlated with the heat generated by the temperature adjustment layer 22, and the first adjustment substance is used to reduce the wavelength of the light. Specifically, when the wavelength of the light irradiated onto the temperature adjustment layer 22 is relatively long, the heat generated by the temperature adjustment layer 22 is relatively small, and when the wavelength of the light irradiated onto the temperature adjustment layer 22 is relatively short, the heat generated by the temperature adjustment layer 22 is relatively large.

[0077] The above-mentioned luminescent substance can be a fluorescent agent, and the above-mentioned first adjustment substance can be a weakly acidic reagent. When the fluorescent agent is in a weakly acidic environment, the wavelength of the light emitted by the fluorescent agent will become shorter, thereby meeting the function of increasing the heating power of the temperature adjustment layer 22.

[0078] In some embodiments, the heat Q generated by the temperature adjustment layer 22 can be characterized by the following formula:

[0079]

[0080] In the formula, Q represents the heat emitted by the temperature adjustment layer 22 after absorbing light per unit time; n represents the number of photons absorbed by the temperature adjustment layer 22; E represents the photon energy; h represents Planck's constant; c represents the speed of light in a vacuum; λ represents the wavelength of the light.

[0081] It can be seen from the above formula that n, h, and c are constants, and the heat Q and the wavelength of the absorbed light are inversely proportional.

[0082] In some embodiments, the first container 1, the second container 4, and the third container 5 are integrally formed. For example, as Figure 1 shown, the first container 1, the second container 4, and the third container 5 can be integrated into one body to form a storage tank, and the above-mentioned luminescent substance, first adjustment substance, and second adjustment substance can be respectively stored in different chambers of the storage tank. This is conducive to realizing the integrated layout of the overall structure and also conducive to reducing the overall space occupation.

[0083] In some embodiments, as Figure 1 shown, the pipe body 3 includes a liquid inlet pipe section 31, a liquid outlet pipe section 32, and an intermediate pipe section 33. The liquid inlet pipe section 31 and the liquid outlet pipe section 32 are both located outside the temperature adjustment member 2. The liquid inlet pipe section 31 and the liquid outlet pipe section 32 are both connected to the first container 1 to realize the circulating transportation of the luminescent substance in the first container 1. The second container 4 and the third container 5 are both connected to the liquid inlet pipe section 31. The intermediate pipe section 33 is connected between the liquid inlet pipe section 31 and the liquid outlet pipe section 32, and the intermediate pipe section 33 is assembled in the flow channel 21 and can transmit light.

[0084] For example, as Figure 1As shown, both the liquid inlet pipe section 31 and the liquid outlet pipe section 32 can be arranged on the left side of the temperature regulating member 2. The left end inlet of the liquid inlet pipe section 31 can communicate with the first container 1, and the right end outlet of the liquid inlet pipe section 31 can communicate with the inlet of the intermediate pipe section 33. The left end outlet of the liquid outlet pipe section 32 can communicate with the first container 1, and the right end inlet of the liquid outlet pipe section 32 can communicate with the outlet of the intermediate pipe section 33.

[0085] The length of the above-mentioned intermediate pipe section 33 can generally be consistent with the length of the flow channel 21, and the intermediate pipe section 33 can be installed in the flow channel 21 and extend along the extension direction of the flow channel 21. The above-mentioned liquid outlet pipe section 32 and liquid inlet pipe section 31 can both be located outside the flow channel 21.

[0086] During use, the luminescent substance can be sent into the intermediate pipe section 33 via the liquid inlet pipe section 31. Since the intermediate pipe section 33 allows light to pass through, the use requirement of promoting the heating of the temperature regulating layer 22 is satisfied. The luminescent substance in the intermediate pipe section 33 can be returned to the first container 1 via the liquid outlet pipe section 32, thus realizing the closed-loop transportation of the luminescent substance and avoiding problems such as pollution caused by the leakage of the luminescent substance.

[0087] In some other embodiments, the liquid inlet pipe section 31, the liquid outlet pipe section 32, and the intermediate pipe section 33 can all be made of light-transmitting materials.

[0088] In some embodiments, as Figure 1 shown, the temperature regulating system includes a first valve 34, a first branch 35, a second valve 36, a second branch 37, and a third valve 38.

[0089] The first valve 34 is arranged on the liquid inlet pipe section 31 and is used to control the on-off of the liquid inlet pipe section 31. For example, the first valve 34 can be an electromagnetic valve. The first valve 34 can be installed at a position adjacent to the first container 1 on the liquid inlet pipe section 31. When the first valve 34 is opened, the luminescent substance in the first container 1 can flow into the intermediate pipe section 33 via the liquid inlet pipe section 31. When the first valve 34 is closed, the first valve 34 can block the transportation of the luminescent substance to the intermediate pipe section 33.

[0090] The first branch 35 is connected between the second container 4 and the liquid inlet pipe section 31. The second valve 36 is arranged on the first branch 35 and is used to control the on-off of the first branch 35. For example, the first branch 35 can extend in the left-right direction. The left end of the first branch 35 can be connected to the second container 4, and the right end of the first branch 35 can be connected to the liquid inlet pipe section 31. The second valve 36 can also be an electromagnetic valve, and the second valve 36 can be installed on the first branch 35. The above-mentioned first valve 34 and second valve 36 can be arranged in parallel as a whole.

[0091] The second branch 37 is connected between the third container 5 and the liquid inlet pipe section 31, and a third valve 38 is provided in the second branch 37 for controlling the on-off of the second branch 37. For example, the second branch 37 may extend along the left-right direction, the left end of the second branch 37 may be connected to the third container 5, the right end of the second branch 37 may be connected to the liquid inlet pipe section 31, and the third valve 38 may also be an electromagnetic valve, and the third valve 38 may be installed on the second branch 37. The above-mentioned second valve 36 and third valve 38 may be arranged in parallel as a whole.

[0092] Thus, the free control of the supply of the luminescent substance, the first regulating substance, and the second regulating substance is realized, and the convenience and controllability of the operation are improved.

[0093] In some embodiments, the temperature control system further includes a first sensor 7 and a second sensor. The first sensor 7 is provided at the inlet and / or outlet of the flow channel 21, and the first sensor 7 is used to monitor the temperature of the temperature control medium.

[0094] For example, the first sensor 7 may be a temperature sensor. As Figure 1 shown, a first sensor 7 may be provided at both the inlet and the outlet of the flow channel 21. By means of the first sensor 7, the temperature of the temperature control medium can be monitored, which facilitates the user to timely understand the specific temperature control situation of the temperature control medium.

[0095] The second sensor is provided on the pipe body 3, and the second sensor is used to monitor the concentrations of the luminescent substance, the first regulating substance, and the second regulating substance. For example, the second sensor may be a concentration sensor, specifically a PH concentration sensor, etc. By means of the second sensor, the monitoring of the amounts of the luminescent substance, the first regulating substance, and the second regulating substance can be realized, which is beneficial to controlling the overall heating power of the temperature control layer 22 on the temperature control medium.

[0096] In some embodiments, the temperature control system includes a pump body 6. The pump body 6 is connected to the liquid inlet pipe section 31, and the pump body 6 is used to empty the luminescent substance in the pipe body 3 when the temperature control medium does not require temperature adjustment.

[0097] For example, as Figure 1 shown, the pump body 6 may be an air pump, and the pump body 6 may be connected to the liquid inlet pipe section 31 at a position adjacent to the intermediate pipe section 33. When it is no longer necessary to heat the temperature control medium through the temperature control layer 22, the above-mentioned first valve 34, second valve 36, and third valve 38 may all be closed. At this time, the first regulating substance and the second regulating substance have also been adjusted for acid-base neutralization. Then, the pump body 6 may be started, and the pump body 6 may pump the luminescent substance in the intermediate pipe section 33 into the first container 1, avoiding the situation where the luminescent substance causes the temperature control layer 22 to continuously heat.

[0098] The battery device according to the embodiment of the present invention will be described below.

[0099] The battery device according to an embodiment of the present invention includes a battery pack and a temperature control system. The temperature control system can be the temperature control system described in any of the above embodiments. The temperature control member 2 is attached to the battery pack and is used to adjust the temperature of the battery pack through the temperature control medium flowing inside.

[0100] During use, heat exchange with the battery pack can be achieved through the temperature control medium in the temperature control member 2, thereby enabling adjustment of the temperature of the battery pack. When the temperature of the temperature control medium is too low to heat the battery pack well, the above-mentioned luminescent substance can be introduced into the pipe body 3, and the heat generated by the temperature control layer 22 on the flow channel wall is used to heat the temperature control medium, and then the battery pack can be heated, avoiding the situation that the battery pack operates at a low temperature continuously in extremely cold weather.

[0101] The temperature control method according to an embodiment of the present invention is described below.

[0102] As Figure 2 shown, the temperature control method according to an embodiment of the present invention includes the following steps:

[0103] Monitor the operating parameters of the battery device. The operating parameters may specifically include the NTC temperature parameter of the battery, the temperature of the temperature control medium at the inlet and outlet of the liquid cooling plate (temperature control member 2), etc. The monitoring of these operating parameters can be achieved through corresponding temperature sensors, etc.

[0104] Judge whether the operating temperature of the battery device meets the conditions according to the monitored operating parameters. For example, whether the adjustment conditions are met can be judged by judging the inlet temperature of the temperature control medium, the temperature rise rate of the temperature control medium, the charging time of the battery pack, etc.

[0105] If the conditions are met, maintain the current operating state of the battery device. For example, if the charging time of the battery pack is within the corresponding time range, it indicates that the operating state of the battery pack meets the requirements. At this time, the existing operating state of the battery device can be maintained and continued to operate. After the temperature of the battery device reaches the expectation, the pump body 6 can be started, and the luminescent substance in the intermediate pipe section 33 can be discharged back to the first container 1 by means of the pump body 6.

[0106] If the conditions are not met, introduce the luminescent substance into the pipe body 3. For example, if the charging time of the battery pack is too long, it can be explained that the operating temperature of the battery is low, etc. At this time, the first valve 34 can be opened. After the luminescent substance is introduced into the pipe body 3, the temperature control layer 22 can generate heat under the action of light and heat the temperature control medium.

[0107] After the luminescent substance is introduced into the tube body 3, it is determined whether the change in the operating temperature of the battery device meets the condition. If the condition is met, the introduction of the luminescent substance into the tube body 3 is blocked. For example, the change in the operating temperature of the battery device can be reflected by the temperature rise rate of the battery device or the unit charging time. If the temperature rise rate is within the preset rate range, it indicates that the current heating power meets the requirements, and the introduction of the luminescent substance into the intermediate tube section 33 can be blocked by closing the first valve 34. At this time, the existing luminescent substance in the intermediate tube section 33 can maintain the current heating state.

[0108] If the condition is not met, the first regulating substance is incorporated into the luminescent substance. For example, if the battery temperature rise rate is low, it can indicate that only introducing the luminescent substance cannot achieve a good heating effect. At this time, the second valve 36 can be opened, and the second regulating substance in the second container 4 can be introduced into the intermediate tube section 33 through the first branch 35 and the liquid inlet pipe section 31, thereby reducing the wavelength of the light generated by the luminescent substance, and further increasing the heat generation of the temperature regulating layer 22.

[0109] After the first regulating substance is introduced into the tube body 3, it is determined again whether the change in the operating temperature of the battery device meets the condition. If the condition is met, the introduction of the first regulating substance into the tube body 3 is blocked, and then the second regulating substance is introduced into the tube body 3.

[0110] For example, it can be determined whether the condition is met by the temperature rise rate of the battery device or the unit charging time. When the temperature rise rate is within the preset rate range, it indicates that the current heating power meets the requirements. The first regulating substance can be blocked from continuing to flow into the intermediate tube section 33 by closing the second valve 36. After the heating is completed, the third valve 38 can be opened, so that the second regulating substance can be introduced into the intermediate tube section 33, and the neutralization with the first regulating substance can be achieved by means of the second regulating substance. After the acid-base neutralization is completed, the pump body 6 can be started and the luminescent substance can be drained back into the first container 1.

[0111] If the condition is not met, the introduction amount of the first regulating substance into the tube body 3 is increased. For example, if the temperature rise rate is low, it indicates that the heat generated by the temperature regulating layer 22 cannot well meet the heating needs at this time. The introduction amount of the first regulating substance can be adjusted by increasing the opening degree of the second valve 36, thereby increasing the overall heat generation of the temperature regulating layer 22.

[0112] In some embodiments, the situations where it is determined whether the operating temperature of the battery device meets the condition according to the monitored operating parameters include at least one of the following:

[0113] The inlet water temperature of the temperature control medium of the temperature control member 2 < the requested water temperature of the battery management system of the battery device. At this time, it indicates that most of the heating power of the vehicle is used by the user's air conditioner, etc., and the temperature of the temperature control medium cannot reach the required temperature for heating the battery, and auxiliary heating is required by the heat generated by the temperature control layer 22.

[0114] The lower limit value of the temperature rise rate of the battery cells of the battery device < 0.5 °C / min. At this time, it indicates that the temperature rise rate of the battery cells is relatively low, and the operating temperature of the battery cells cannot meet the usage requirements, and auxiliary heating is required.

[0115] The growth rate of the low-temperature charging time of the battery device compared to the normal-temperature charging time > 50%. The normal-temperature charging time can be the temperature range corresponding to the charging duration range that meets the expectations for the battery device. When the low-temperature charging time exceeds 50% of the normal-temperature charging time, it indicates that the temperature of the battery device is relatively low at this time, and auxiliary heating is required.

[0116] A specific example of the temperature control method of the present invention is described below.

[0117] The temperature control method of this example is implemented based on a temperature control system, which consists of a hardware part and an electronic control part. The hardware part includes a liquid cooling plate (temperature control member 2), a nano-encapsulated tube (tube body 3), a fluorescent agent storage tank (the whole formed by the first container 1, the second container 4, and the third container 5), etc.

[0118] A layer of photothermal fiber is nested on the flow channel wall of the liquid cooling plate. The nano-encapsulated tube runs through the flow channel 21 of the liquid cooling plate. The surface of the encapsulated tube is a light-transmitting structure. It penetrates into the liquid cooling plate from the water inlet and penetrates out from the water outlet of the liquid cooling plate. One end connected to the water inlet of the liquid cooling plate is simultaneously connected to the fluorescent agent storage tank, and the part penetrating out from the water outlet end of the liquid cooling plate is connected back to the fluorescent agent storage tank to form a closed loop. The nano-encapsulated tube can prevent the substances inside the encapsulated tube from reacting with the coolant.

[0119] In the fluorescent agent storage tank, the storage tank is divided into three independent chambers by a partition. One chamber stores the fluorescent agent, one chamber stores a weakly acidic reagent (the first regulating substance), and one chamber stores a weakly alkaline substance (the second regulating substance). Each of the three chambers can be introduced into the nano-encapsulated tube by opening and closing the flow solenoid valve.

[0120] Another branch of the pipeline is connected to an air pump (pump body 6). When additional heating of the coolant (temperature control medium) is not required, the flow valve of the fluorescent agent is closed, and the remaining fluorescent agent in the pipeline is emptied by the air pump and flows back to the storage tank.

[0121] The electronic control part mainly includes a monitoring module, a control module and an execution module. The monitoring module includes an NTC temperature sensor, temperature sensors at the inlet and outlet of the battery pack cold plate, a clock circuit, a PH concentration sensor, etc. The control module mainly includes a strategy part, which can be integrated into the battery pack BMS system. The execution module is mainly a flow solenoid valve.

[0122] When using this system, as Figure 2 shown, first input parameters such as the charging MAP of the battery pack and the set low-temperature heating rate into the control module. When the battery pack is in a low-temperature environment, by monitoring the NTC temperature of the battery pack and the water temperature at the inlet and outlet of the liquid cooling plate, when the following conditions occur and last for 20 s at the same time, the control module will send a signal to the flow solenoid valve, and the solenoid valve will open, and the fluorescent agent will flow into the nano encapsulation tube.

[0123] Through the determination conditions and the concentration sensors installed in the pipeline, monitor the concentration of the fluorescent agent and the temperature of the coolant in the pipeline. When it is necessary to continuously increase the temperature rise of the coolant, it can be seen from the heat formula generated by the above-mentioned temperature adjustment layer 22 that it is necessary to reduce the wavelength of the light wave emitted by the fluorescent agent. At this time, the flow valve of the weak acid reagent is opened, and the weak acid reagent is introduced to make the fluorescent agent in a weak acid environment. The wavelength of the light emitted by the fluorescent agent gradually becomes shorter, and the heat generated after being absorbed by the photothermal fiber gradually increases.

[0124] When the determination conditions meet the normal conditions and there is no need to heat the coolant additionally, the flow valve of the acid reagent is gradually closed, the flow valve of the alkaline reagent is opened, and the alkaline reagent is introduced. The fluorescent agent gradually returns to a neutral environment, the wavelength of the light wave emitted gradually becomes longer, and the heat generated by the photothermal fiber gradually becomes smaller. At this time, the flow solenoid valves of the fluorescent agent and the reagent are closed, and no longer introduced into the encapsulation pipeline. The air pump is turned on, and compressed air is introduced into the pipeline to discharge the remaining fluorescent agent in the pipeline and return it to the storage tank.

[0125] In the temperature control system of the embodiment of the present invention, in a low-temperature environment, when the heating power of the whole vehicle is biased towards the cab air conditioner, there is no need for the whole vehicle to allocate more heating power to the battery pack, and the battery pack can adjust itself to meet the temperature rise requirement.

[0126] Secondly, after the temperature of the coolant is increased, the temperature of the battery cells in the battery pack also rises accordingly, and the charging rate is gradually increased, avoiding the problem of long charging time at low temperature.

[0127] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0128] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0129] In the present invention, unless otherwise clearly specified and defined, the terms "mounted", "connected", "coupled", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or communicable with each other; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0130] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0131] In the present invention, terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0132] Although the above embodiments have been shown and described, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Variations, modifications, substitutions, and variations made by those of ordinary skill in the art to the above embodiments are all within the scope of protection of the present invention.

Claims

1. A temperature control system, characterized in that, Comprising: A first container which stores a luminescent substance; A temperature regulating member, within which there is a flow channel for the circulation of a temperature regulating medium, and a temperature regulating layer is provided on the wall of the flow channel; A tube body which is connected to the first container and assembled within the flow channel, at least a part of the tube body being light transmissive, and the tube body being used to convey the luminescent substance within the first container into the flow channel, and the temperature regulating layer generates heat under the action of the light generated by the luminescent substance to heat the temperature regulating medium.

2. The temperature control system according to claim 1, wherein Comprising: A second container which is connected to the tube body and stores a first regulating substance, and the first regulating substance is used to be incorporated into the luminescent substance to enhance the effective action of the luminescent substance on the temperature regulating layer and increase the heat generated by the temperature regulating layer; A third container which is connected to the tube body and stores a second regulating substance, and the second regulating substance is used to be incorporated into the luminescent substance to reduce the effective action of the luminescent substance on the temperature regulating layer and reduce the heat generated by the temperature regulating layer.

3. The temperature control system according to claim 2, characterized in that The second regulating substance reduces the heat generated by the temperature regulating layer by neutralizing the first regulating substance; And / or, the wavelength of the light generated by the luminescent substance and the heat generated by the temperature regulating layer are negatively correlated, and the first regulating substance is used to reduce the wavelength of the light; And the heat Q generated by the temperature regulating layer is: Wherein, Q represents the heat emitted by the temperature regulating layer after absorbing light per unit time; n represents the number of photons absorbed by the temperature regulating layer; E represents the photon energy; h represents Planck's constant; c represents the speed of light in a vacuum; λ represents the wavelength of the light.

4. The temperature control system according to claim 3, characterized in that, The luminescent substance is a fluorescent agent, the first regulating substance is an acidic reagent, and the second regulating substance is a basic reagent; And / or, the first container, the second container, and the third container are integrally formed; And / or, the tube body is a nano-encapsulated tube; And / or, the temperature regulating layer is a photo-thermal fiber.

5. The temperature control system according to any one of claims 2-4, characterized in that, The tube body includes: An inlet pipe section and an outlet pipe section, both the inlet pipe section and the outlet pipe section are located outside the temperature regulating member, and both the inlet pipe section and the outlet pipe section are connected to the first container to realize the circulating conveyance of the luminescent substance within the first container, and the second container and the third container are both connected to the inlet pipe section; An intermediate pipe section which is connected between the inlet pipe section and the outlet pipe section, and the intermediate pipe section is assembled within the flow channel and is light transmissive.

6. The temperature control system according to claim 5, characterized in that, Comprising: A first valve which is provided on the inlet pipe section and is used to control the on-off of the inlet pipe section; A first branch and a second valve, the first branch is connected between the second container and the inlet pipe section, and the second valve is provided on the first branch and is used to control the on-off of the first branch; A second branch and a third valve, the second branch is connected between the third container and the inlet pipe section, and the third valve is provided on the second branch and is used to control the on-off of the second branch; A first sensor which is provided at the inlet and / or outlet of the flow channel, and the first sensor is used to monitor the temperature of the temperature regulating medium; A second sensor, which is arranged on the pipe body and is used to monitor the concentrations of the luminescent substance, the first regulating substance, and the second regulating substance.

7. The temperature control system according to claim 5, characterized in that, It includes a pump body, which is connected to the liquid inlet pipe section, and the pump body is used to empty the luminescent substance in the pipe body when the temperature regulating medium does not require temperature regulation.

8. A battery device, characterized in that, It includes a battery pack and a temperature regulating system according to any one of the above claims 1-7, and the temperature regulating member is attached to the battery pack and is used to regulate the temperature of the battery pack through the temperature regulating medium flowing inside.

9. A temperature regulation method for a temperature regulation system according to any one of the above-mentioned claims 2-7, characterized in that, It includes the following steps: Monitoring the operating parameters of the battery device; Judging whether the operating temperature of the battery device meets the conditions according to the monitored operating parameters. If it meets the conditions, the current operating state of the battery device is maintained; If it does not meet the conditions, the luminescent substance is introduced into the pipe body; After the luminescent substance is introduced into the pipe body, judging whether the change amount of the operating temperature of the battery device meets the conditions. If it meets the conditions, the introduction of the luminescent substance into the pipe body is blocked. If it does not meet the conditions, the first regulating substance is incorporated into the luminescent substance; After the first regulating substance is introduced into the pipe body, judging again whether the change amount of the operating temperature of the battery device meets the conditions. If it meets the conditions, the introduction of the first regulating substance into the pipe body is blocked, and then the second regulating substance is introduced into the pipe body. If it does not meet the conditions, the introduction amount of the first regulating substance into the pipe body is increased.

10. The temperature adjustment method according to claim 9, characterized in that, The situation of judging whether the operating temperature of the battery device meets the conditions according to the monitored operating parameters includes at least one of the following: The inlet water temperature of the temperature regulating medium of the temperature regulating member < the requested water temperature of the battery management system of the battery device; The lower limit value of the temperature rise rate of the battery cells of the battery device < 0.5 °C / min; The growth rate of the low-temperature charging time of the battery device compared to the normal-temperature charging time > 50%.

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