CN114614159A - Temperature adjusting plate, temperature adjusting device and temperature adjusting method - Google Patents
Temperature adjusting plate, temperature adjusting device and temperature adjusting method Download PDFInfo
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- CN114614159A CN114614159A CN202210347638.7A CN202210347638A CN114614159A CN 114614159 A CN114614159 A CN 114614159A CN 202210347638 A CN202210347638 A CN 202210347638A CN 114614159 A CN114614159 A CN 114614159A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/63—Control systems
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/63—Control systems
- H01M10/633—Control systems characterised by algorithms, flow charts, software details or the like
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
- H01M10/647—Prismatic or flat cells, e.g. pouch cells
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6567—Liquids
- H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
Abstract
The invention discloses a temperature adjusting plate, a temperature adjusting device and a temperature adjusting method, wherein the temperature adjusting plate is used for adjusting the temperature of a battery pack and comprises a main inlet and a main outlet, and fluid for adjusting the temperature of the battery pack enters from the main inlet and flows out from the main outlet; along the flowing direction of the fluid, the temperature adjusting plate is also provided with at least one branch inlet for auxiliary fluid to flow in. By adopting the invention, the temperature of the downstream corresponding area of the battery pack can be adjusted under the action of the auxiliary fluid, so that the temperature of each area of the battery pack can be balanced, and the temperature difference of the battery pack is reduced. Especially to the battery package that has long module or overlength module, can carry out the local temperature regulation to the middle zone of this battery package through the temperature regulating plate, not only can promote the efficiency that adjusts the temperature, can make moreover adjust the temperature more accurate.
Description
Technical Field
The invention relates to a temperature adjusting plate, a temperature adjusting device and a temperature adjusting method, in particular to a temperature adjusting plate, a temperature adjusting device and a temperature adjusting method for a battery pack.
Background
At present, a single-inlet single-outlet mode is adopted for a mainstream temperature adjusting plate, and if a module in a battery pack or the battery pack is large, the temperature difference of batteries near an inlet and an outlet position possibly caused by the temperature rise of fluid is large.
In addition, if the installation module is longer, the battery temperature in the middle of the module is higher and the battery temperature at the two ends is lower because of the reason that the end plate has stronger heat dissipation at the two ends of the module. In addition, after the fluid enters the temperature adjusting plate from the single inlet, the temperature adjusting capacity of the fluid is reduced along with the increase of the flow path.
In the aspect of thermal management control, if a single-inlet single-outlet mode temperature adjusting plate is adopted, when the temperature difference and the high temperature in the battery pack are adjusted, the temperature difference between batteries can not be effectively controlled for controlling the highest temperature only by integrally adjusting and controlling the batteries in the pack, namely adjusting and controlling the flow and the temperature of inlet fluid.
Disclosure of Invention
The invention aims to overcome the defect of large temperature difference in a battery pack in the prior art and provides a temperature adjusting plate, a temperature adjusting device and a temperature adjusting method.
The invention solves the technical problems through the following technical scheme:
a temperature-regulating plate is used for regulating the temperature of a battery pack and comprises a main inlet and a main outlet, and fluid for regulating the temperature of the battery pack enters from the main inlet and flows out from the main outlet;
along the flowing direction of the fluid, the temperature adjusting plate is also provided with at least one branch inlet for auxiliary fluid to flow in.
In this scheme, divide the import through setting up on the temperature regulation board, can mend auxiliary fluid in the relevant position department of battery package to mix with the fluid that the ability of adjusting the temperature descends after the main import flows into the temperature regulation board certain distance, make the low reaches of battery package correspond the region and can be adjusted the temperature under auxiliary fluid's effect, thereby can the temperature in each region of balanced battery package, reduce the temperature difference of battery package. Especially to the battery package that has long module or overlength module, can carry out the local temperature regulation to the middle zone of this battery package through the temperature regulating plate, not only can promote the efficiency that adjusts the temperature, can make moreover adjust the temperature more accurate.
Preferably, the temperature adjustment plate comprises a plate body, the branch inlet is arranged on the outer side wall of the plate body, and an included angle between the opening direction of the branch inlet and the flowing direction of the fluid is an acute angle;
the opening direction of the branch inlet is a direction extending from the opening end of the branch inlet to the inner side wall of the plate body along the axial direction of the branch inlet.
In the scheme, an included angle between the opening direction of the branch inlet and the flowing direction of the fluid is an acute angle, so that the auxiliary fluid can flow along the flowing direction of the fluid after entering from the branch inlet; on the other hand, the auxiliary fluid can also disturb the flow field of the fluid, enhance the heat exchange between the fluid and the temperature adjusting plate and improve the temperature adjusting performance. In addition, the branch mouth can set up correspondingly according to the demand that adjusts the temperature in each region of battery package.
Preferably, the battery pack has a plurality of battery modules; the temperature adjusting plate is provided with a plurality of temperature adjusting units, and the temperature adjusting units at least correspond to one battery module.
In this scheme, to the battery package that has a plurality of battery modules, can set up a plurality of units that adjust the temperature and adjust the temperature to the battery module that corresponds to can promote the precision that adjusts the temperature to the battery package different zone, promote the performance that adjusts the temperature.
Preferably, the plurality of battery modules are sequentially arranged in sequence, the plurality of temperature adjusting units are sequentially arranged along the length direction of the battery pack, and two adjacent temperature adjusting units are communicated with each other;
or, it is a plurality of the battery module arranges in parallel in proper order, the thermoregulation unit along the width direction of battery package sets up in parallel in proper order, and adjacent two the thermoregulation unit communicates each other.
A temperature adjusting device is provided with the temperature adjusting plate, and fluid and auxiliary fluid flow through the temperature adjusting plate to adjust the temperature of a battery pack.
In this scheme, attemperator can mend auxiliary fluid through adopting foretell temperature regulation board in the relevant position department of battery package to mix with the fluid that the ability of adjusting the temperature descends after the main import flows into the temperature regulation board certain distance, make the low reaches of battery package correspond the region and can be adjusted the temperature under auxiliary fluid's effect, thereby can the temperature in each region of balanced battery package, reduce the temperature difference of battery package. Especially to the battery package that has long module or overlength module, can carry out the local temperature regulation to the middle zone of this battery package through the temperature regulating plate, not only can promote the efficiency that adjusts the temperature, can make moreover adjust the temperature more accurate.
Preferably, the temperature adjusting device further comprises a detection unit and a control unit, the detection unit comprises at least one detector, the detector is arranged between two adjacent branch inlets, the detector is electrically connected with the control unit, and the control unit is connected with the branch inlets; the detector is used for detecting the temperature of the corresponding area of the battery pack, and the control unit is used for controlling the entering condition of the auxiliary fluid in the branch inlet according to the temperature.
In this scheme, can detect the regional temperature of battery package that is located between two adjacent minute imports through the detector to according to the branch import entering condition that this regional temperature control corresponds, with to this regional temperature regulation, make the inside difference in temperature of battery package unanimous basically.
Preferably, the control unit comprises a controller and at least one flow regulator, the flow regulator is connected with the corresponding branch inlet, and each flow regulator is connected with the controller; each detector is connected with the controller; the controller is used for receiving the temperature signal of the detector and controlling the corresponding flow regulator to regulate the inlet flow of the auxiliary fluid in the corresponding branch inlet according to the temperature signal.
In this scheme, can adjust branch import in auxiliary fluid's entering flow through the corresponding flow regulator of controller control to according to the corresponding auxiliary fluid flow of demand matching that adjusts the temperature, make adjust the temperature more accurate, also can make adjust the temperature can quick response.
Preferably, the flow regulator comprises at least one of a water pump and a regulating valve; and/or the controller is a battery management system.
The temperature adjusting method adopts the temperature adjusting device, and fluid and auxiliary fluid flow through the temperature adjusting plate to adjust the temperature of the battery pack; the temperature adjusting method comprises the following steps:
controlling the fluid to enter the plate body of the temperature-regulating plate from the primary inlet;
controlling the auxiliary fluid to enter the corresponding branch inlet;
controlling a mixed liquid of the fluid and the secondary fluid to flow out of the primary outlet.
In this scheme, adjust the temperature through adopting foretell attemperator, can mend auxiliary fluid in the relevant position department of battery package to mix with the fluid that adjusts the temperature ability and descend after the main import flows into the temperature regulation board for a certain distance, make the low reaches of battery package correspond the region and can be adjusted the temperature under auxiliary fluid's effect, thereby can the temperature of each region of balanced battery package, reduce the temperature difference of battery package. Especially to the battery package that has long module or overlength module, can carry out the local temperature regulation to the middle zone of this battery package through the temperature regulating plate, not only can promote the efficiency that adjusts the temperature, can make moreover adjust the temperature more accurate.
Preferably, the temperature adjusting device further comprises a detection unit and a control unit, the detection unit comprises at least one detector, the detector is arranged between two adjacent branch inlets, the detector is electrically connected with the control unit, and the control unit is connected with the branch inlets;
the controlling the auxiliary fluid to enter the corresponding branch inlet comprises:
a detector in the detection unit detects temperature information of a corresponding area of the battery pack;
the control unit generates control information according to the temperature information and controls the entering condition of the auxiliary fluid in the branch inlet at the upstream of the corresponding area according to the control information; wherein the control information includes a temperature and a flow rate of the secondary fluid.
In the scheme, the temperature can be adjusted by controlling the temperature and the flow of the auxiliary fluid, so that the temperature adjusting capacity can be improved.
The positive progress effects of the invention are as follows: can mend auxiliary fluid in the relevant position department of battery package to mix with the fluid that the temperature regulation ability descends after the main import flows into the temperature regulation board certain distance, make the low reaches of battery package correspond the region and can be adjusted the temperature under auxiliary fluid's effect, thereby can the temperature in each region of balanced battery package, reduce the temperature difference of battery package. Especially to the battery package that has long module or overlength module, can carry out the local temperature regulation to the middle zone of this battery package through the temperature regulating plate, not only can promote the efficiency that adjusts the temperature, can make moreover adjust the temperature more accurate.
Drawings
Fig. 1 is a schematic structural diagram of a temperature adjustment plate according to an embodiment of the present invention;
FIG. 2 is a schematic perspective view of the temperature-adjusting plate shown in FIG. 1;
fig. 3 is a schematic perspective view of another temperature-adjusting plate according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a temperature adjustment device according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of another temperature regulating device provided by the embodiment of the invention;
fig. 6 is a schematic flow chart of a temperature adjustment method according to an embodiment of the present invention.
Description of the reference numerals
First branch inlet 310
Second branch inlet 320
Regulating valve 40
Included angle alpha
Detailed Description
The invention is further illustrated by the following examples, which are not intended to limit the scope of the invention.
An embodiment of the present invention provides a temperature adjustment plate 10, as shown in fig. 1 to 3, the temperature adjustment plate 10 is used for adjusting the temperature of a battery pack 2, the temperature adjustment plate 10 includes a main inlet 100 and a main outlet 200, and a fluid for adjusting the temperature of the battery pack 2 enters from the main inlet 100 and flows out from the main outlet 200; the temperature-adjusting plate 10 is further provided with at least one sub-inlet 300 along the flowing direction of the fluid, and the sub-inlet 300 is used for the auxiliary fluid to flow in.
Through set up branch import 300 on temperature regulation board 10, can mend auxiliary fluid in battery package 2's relevant position department to mix with the fluid that adjusts the temperature ability and descend after flowing into temperature regulation board 10 certain distance from main import 100, make the downstream of battery package 2 correspond the region and can be adjusted the temperature under auxiliary fluid's effect, thereby can balance the temperature in each region of battery package 2, reduce the temperature difference of battery package 2. Especially for the battery package 2 that has long module or overlength module, can carry out the local temperature regulation to the middle zone of this battery package 2 through temperature regulating plate 10, not only can promote the efficiency that adjusts the temperature, can make moreover adjust the temperature more accurate.
In a specific implementation, as shown in fig. 1, the temperature-adjusting plate 10 is disposed at the outer side of the battery pack 2, and the main inlet 100 and the main outlet 200 may be respectively located at two ends of the battery pack 2, so as to facilitate the fluid to enter the temperature-adjusting plate 10. The main inlet 100 and the main outlet 200 may communicate with each other through a passage (not shown) to which each of the sub-inlets 300 communicates, so that the auxiliary fluid can be mixed with the upstream fluid after entering the inside of the temperature-adjusting plate 10 through the sub-inlet 300, and the auxiliary fluid can adjust the temperature of the fluid, so that the temperature of the mixed fluid of the auxiliary fluid and the fluid can be higher or lower than the temperature of the fluid flowing to the sub-inlet 300 to adjust the temperature of the battery pack 2.
In addition, according to the temperature regulation requirement of the battery pack 2, for example, when the temperature of the battery pack 2 is higher than a high-temperature preset value, the auxiliary fluid can reduce the temperature of the mixed liquid so as to cool the battery pack 2, and the temperature regulation plate 10 can be used as a liquid cooling plate; when the temperature of the battery pack 2 is lower than the low-temperature preset value, the auxiliary fluid may raise the temperature of the mixed liquid to heat the battery pack 2.
As shown in fig. 2 and 3, the temperature-adjusting plate 10 includes a plate body 400, and the inlet 300 is disposed on an outer sidewall of the plate body 400; as shown in fig. 1, an angle α between the opening direction of the inlet 300 and the flow direction of the fluid is an acute angle; here, the opening direction of the branch inlet 300 refers to a direction extending from the opening end of the branch inlet 300 toward the inner sidewall of the plate body 400 along the axial direction of the branch inlet 300. As shown in fig. 1, the opening direction of the inlet 300 is indicated by arrow B in fig. 1, and the flow direction of the fluid is indicated by arrow a in fig. 1.
As shown in fig. 1, by setting the included angle α between the opening direction of the branch inlet 300 and the flow direction of the fluid at an acute angle, after the auxiliary fluid enters the interior of the temperature-regulating plate 10 through the branch inlet 300, the auxiliary fluid can continue to flow downstream along with the flow direction of the fluid; due to the existence of the included angle alpha, the auxiliary fluid can also generate disturbance to the flow field of the fluid, enhance the heat exchange between the fluid and the temperature adjusting plate 10 and improve the temperature adjusting performance.
As shown in fig. 1, the opening directions of the different branch inlets 300 are equal to the flow direction of the fluid. In other embodiments, the included angles between the opening directions of the different sub-inlets 300 and the flowing direction of the fluid may also be different, for example, according to the temperature adjustment requirements of different regions of the battery pack 2, the auxiliary fluid in the sub-inlet 300 at the corresponding position may have different disturbance requirements and other requirements, and thus different included angles may be selected. In addition, branch mouthful 300 can set up correspondingly according to the demand that adjusts the temperature in each region of battery package 2, for example can evenly arrange along the length direction of battery package 2, also can arrange according to the heating up or the cooling degree in the different regions of battery package 2.
As shown in fig. 3, the battery pack 2 has a plurality of battery modules 210; the temperature control plate 10 has a plurality of temperature control units corresponding to at least one battery module 210.
For the battery pack 2 with a plurality of battery modules 210, a plurality of temperature adjusting units can be arranged to adjust the temperature of the corresponding battery modules 210, so that the temperature adjusting precision of different areas of the battery pack 2 can be improved, and the temperature adjusting performance is improved.
In specific implementation, the plurality of battery modules 210 may have different arrangement modes, and the temperature adjustment unit may be correspondingly configured according to the arrangement mode of the battery modules 210.
As a possible embodiment, the plurality of battery modules 210 are sequentially arranged in sequence, the plurality of temperature control units are sequentially arranged along the length direction of the battery pack 2, and two adjacent temperature control units are communicated with each other.
As another possible embodiment, a plurality of battery modules 210 are arranged in parallel in sequence, the temperature control units are arranged in parallel in sequence along the width direction of the battery pack 2, and two adjacent temperature control units are communicated with each other.
Further, as shown in fig. 3, the battery pack 2 has two battery modules 210 arranged in parallel, and the primary inlet 100 and the primary outlet 200 are disposed on the same side of the battery pack 2; the temperature control plate 10 has a temperature control unit that is disposed at the outer sides of the two battery modules 210 at the same time and controls the temperature of the two battery modules 210. Along the flowing direction of the fluid, four sub-inlets 300 are sequentially formed on the side wall of the temperature adjusting unit, wherein two sub-inlets 300 are correspondingly formed on each battery module 210. Fig. 3 shows a schematic structural diagram of regulating the temperature of two battery modules 210 by using one temperature regulating unit, and in other embodiments, two temperature regulating units may be further provided, and the two temperature regulating units are arranged in parallel and are communicated with each other, and respectively regulate the temperature of the corresponding battery modules 210.
As shown in fig. 1, for example, after the battery pack 2 is cooled, the main inlet 100 flows a low-temperature cooling liquid to cool the battery, the temperature of the cooling liquid rises, the cooling liquid flowing through the first sub-inlet 310 is mixed with the low-temperature cooling liquid flowing through the first sub-inlet 310 to reduce the temperature of the cooling liquid, and the flow rate of the two cooling liquids after being merged can be increased, which can also disturb the flow field, thereby enhancing the heat exchange between the cooling liquid and the liquid cooling plate, thereby enhancing the heat dissipation of the battery after the first sub-inlet 310, and the low-temperature cooling liquid entering the liquid cooling plate at the first sub-inlet 310 can counteract the heat dissipation capacity reduction caused by the temperature rise of the upstream cooling liquid, and improve the temperature difference between the upstream and the downstream. By analogy, each branch inlet 300 is supplemented with proper low-temperature cooling liquid to offset the heat dissipation weakening caused by the temperature rise of the cooling liquid, so that the heat dissipation balance among the long module batteries can be controlled, and the temperature of the batteries is controlled to be basically consistent.
An embodiment of the present invention also provides a temperature-adjusting device 1, as shown in fig. 4 and 5, the temperature-adjusting device 1 has the temperature-adjusting plate 10 as described above, and flows a fluid and an auxiliary fluid through the temperature-adjusting plate 10 to adjust the temperature of the battery pack 2.
Further, the temperature adjusting device 1 further comprises a detection unit and a control unit, wherein the detection unit comprises at least one detector, the detector is arranged between two adjacent branch inlets 300, the detector is electrically connected with the control unit, and the control unit is connected with the branch inlets 300; the detector is used for detecting the temperature of the corresponding area of the battery pack 2, and the control unit is used for controlling the entering of the auxiliary fluid in the branch inlet 300 according to the temperature.
The temperature of the area of the battery pack 2 between two adjacent branch inlets 300 can be detected by the detector, so that the corresponding branch inlets 300 are controlled to enter according to the temperature of the area, the temperature of the area is adjusted, and the temperature difference inside the battery pack 2 is basically consistent.
As shown in fig. 4 and 5, fig. 4 and 5 each show a schematic composition of a thermostat 1 with two component inlets 300, the two component inlets 300 being a first component inlet 310 and a second component inlet 320, respectively. The temperature regulating device 1 detects the temperature of the area between the first sub-inlet 310 and the second sub-inlet 320 through the detecting unit, and feeds back a temperature signal to the control unit, and the control unit controls the entering condition of the auxiliary fluid in the first sub-inlet 310 according to the fed-back temperature signal. Accordingly, a detection unit may be further disposed between the second sub-inlet 320 and the main outlet 200, and the temperature of the region of the battery pack 2 between the second sub-inlet 320 and the main outlet 200 is detected and fed back to the control unit, and the control unit controls the inlet of the auxiliary fluid in the first sub-inlet 310 and/or the second sub-inlet 320 according to the fed-back temperature signal.
And, for the area of the pack 2 having the plurality of sub-inlets 300 on the upstream, when it is necessary to adjust the temperature, the entry of the auxiliary fluid into the plurality of sub-inlets 300 on the upstream may be controlled, and the entry of the auxiliary fluid into the sub-inlet 300 closest to the area of the pack 2 may also be controlled. In particular, it is preferable to control the entry of the secondary fluid into the inlet 300 closest to the area of the battery pack 2, so that the control strategy is simple and easy to implement.
Further, the control unit includes a controller 20 and at least one flow regulator, the flow regulator is connected with the corresponding branch port 300, and each flow regulator is connected with the controller 20; each detector is connected to the controller 20; the controller 20 is used for receiving the temperature signal of the detector and controlling the corresponding flow regulator to regulate the inlet flow of the auxiliary fluid in the corresponding sub-inlet 300 according to the temperature signal.
The controller 20 can control the corresponding flow regulator to regulate the inlet flow of the auxiliary fluid in the branch inlet 300, so that the corresponding flow of the auxiliary fluid is matched according to the temperature regulation requirement, the temperature regulation is more accurate, and the temperature regulation can be quickly responded.
Further, the flow regulator includes at least one of a water pump 30 and a regulating valve 40; and/or the controller 20 is a battery management system.
In particular embodiments, the flow rate of the fluid may be increased or decreased by controlling the speed of the water pump 30 to increase or decrease the temperature regulation of the downstream battery pack 2 area. The flow rate of the fluid may be increased or decreased by controlling the valve opening of the regulating valve 40 to increase or decrease the temperature regulation of the downstream battery pack 2 region. As shown in fig. 4, a schematic diagram of the flow regulator being a water pump 30 is shown; as shown in fig. 5, a schematic diagram of the flow regulator as a regulator valve 40 is shown. As shown in fig. 4 and 5, the controller 20 may multiplex the battery management system BMS.
Further, the control unit may further have temperature regulators (not shown in the drawings) connected to the corresponding sub-inlets 300, and each temperature regulator is connected to the controller 20, and the controller 20 further controls the corresponding temperature regulator to regulate the inlet temperature of the auxiliary fluid in the corresponding sub-inlet 300 according to the received temperature signal of the detector.
And, as shown in fig. 4 and 5, a flow regulator and a temperature regulator may also be provided at the primary inlet 100 to control the inlet flow and temperature of the fluid at the primary inlet 100.
By adopting the temperature adjusting plate 10 or the temperature adjusting device 1, the temperature adjusting device is suitable for cooling a long module or an ultra-long module, and meanwhile, the temperature difference of the battery of the whole module is kept small; for a medium length module, the temperature difference between the cells can be improved; the temperature control device can be used for adjusting the local battery temperature, if the temperature of a part of batteries in the battery module 210 is higher or lower, the flow of the inlet 300 at the upstream of the position can be accurately controlled, so that the temperature difference between the batteries in the whole battery module 210 or the battery pack 2 can be balanced, and more control means can be provided for a thermal management strategy.
The embodiment of the invention also provides a temperature regulation method, wherein the temperature regulation method adopts the temperature regulation device 1, and the temperature regulation is carried out on the battery pack 2 by flowing fluid and auxiliary fluid through the temperature regulation plate 10; as shown in fig. 6, the temperature adjusting method may include the steps of:
s100: controlling fluid entering the plate body 400 of the temperature-regulating plate 10 from the main inlet 100;
s200: controlling the auxiliary fluid to enter the corresponding branch inlet 300;
s300: the mixed flow of control fluid and secondary fluid exits the primary outlet 200.
In particular implementation, in step S100, the flow rate of the fluid entering the main inlet 100 may be adjusted by controlling a flow regulator corresponding to the main inlet 100, and the temperature of the fluid entering the main inlet 100 may be adjusted by controlling a temperature regulator corresponding to the main inlet 100. The flow regulator corresponding to the main inlet 100 may be the water pump 30 or the regulating valve 40, and the control of the flow regulator and the temperature regulator may be controlled by a battery management system.
Further, the temperature adjusting device 1 further comprises a detection unit and a control unit, wherein the detection unit comprises at least one detector, the detector is arranged between two adjacent branch inlets 300, the detector is electrically connected with the control unit, and the control unit is connected with the branch inlets 300;
step S200 may include:
s210: the detector in the detection unit detects the temperature information of the corresponding area of the battery pack 2;
s220: the control unit generates control information according to the temperature information and controls the entry of the auxiliary fluid in the sub-inlet 300 located upstream of the corresponding region according to the control information; wherein the control information comprises the temperature and flow rate of the secondary fluid.
As shown in fig. 4 and 5, the components of the temperature adjusting device 1 having two branch inlets 300 are schematically illustrated, wherein the two branch inlets 300 are a first branch inlet 310 and a second branch inlet 320. The detection unit may have two detectors (not shown in the drawings) each electrically connected to the control unit, one for detecting the region of the battery pack 2 between the first and second sub-inlets 310 and 320 and the other for detecting the region of the battery pack 2 between the second sub-inlet 320 and the main outlet 200. When the detector detects that the temperature of the region of the battery pack 2 between the first and second inlet ports 310 and 320 needs to be raised or lowered, the control unit controls the inlet temperature and flow rate of the auxiliary fluid in the upstream first inlet port 310. When the detector detects that the temperature of the region of the battery pack 2 between the second sub-inlet port 320 and the main outlet port 200 needs to be raised or lowered, the control unit may control the inlet temperature and the flow rate of the auxiliary fluid in the upstream first and second sub-inlet ports 310 and 320; it is also possible to control only the entry temperature and flow rate of the secondary fluid in the second sub-inlet 320 closest to this region.
Further, as described above, the control unit may include a controller 20, a flow regulator, and a temperature regulator, wherein the controller 20 may be the battery management system BMS, and the main inlet 100 and each of the sub-inlets 300 may be configured with the flow regulator and the temperature regulator, so that for the above-described step S220, the flow rate and the temperature of the fluid corresponding to the main inlet 100 and the flow rate and the temperature of the auxiliary fluid corresponding to the sub-inlet 300 may be controlled by controlling the respective flow regulators and temperature regulators.
The flow regulator may be a water pump 30 or a flow valve. When the device is operated, the BMS detects that the temperature of the battery in the region is higher/lower, the rotating speed of the water pump 30 at the inlet of the upstream of the battery can be adjusted according to the higher temperature, and the flow of the cooling liquid is increased/reduced, so that the cooling of the battery at the downstream is enhanced/weakened. Or, when the device is operated, the BMS detects that the temperature of the battery in the red frame is higher/lower, and then the BMS can adjust the opening of an electric valve at the upstream inlet of the battery according to the higher/lower temperature degree, reduce/increase the opening of the valve and increase/reduce the flow of the cooling liquid so as to strengthen/weaken the cooling of the battery at the downstream.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.
Claims (10)
1. A temperature-regulating plate is used for regulating the temperature of a battery pack and comprises a main inlet and a main outlet, and fluid for regulating the temperature of the battery pack enters from the main inlet and flows out from the main outlet; it is characterized in that the preparation method is characterized in that,
along the flowing direction of the fluid, the temperature adjusting plate is also provided with at least one branch inlet for auxiliary fluid to flow in.
2. The temperature-adjusting plate of claim 1, wherein the temperature-adjusting plate comprises a plate body, the branch inlet is disposed on an outer side wall of the plate body, and an included angle between an opening direction of the branch inlet and a flow direction of the fluid is an acute angle;
the opening direction of the branch inlet is a direction extending from the opening end of the branch inlet to the inner side wall of the plate body along the axial direction of the branch inlet.
3. The temperature-regulating plate of claim 1, wherein the battery pack has a plurality of battery modules; the temperature adjusting plate is provided with a plurality of temperature adjusting units, and the temperature adjusting units at least correspond to one battery module.
4. The temperature-regulating plate according to claim 3, wherein a plurality of the battery modules are sequentially arranged in sequence, a plurality of temperature-regulating units are sequentially arranged along the length direction of the battery pack, and two adjacent temperature-regulating units are communicated with each other;
or, it is a plurality of the battery module arranges in parallel in proper order, the thermoregulation unit along the width direction of battery package sets up in parallel in proper order, and adjacent two the thermoregulation unit communicates each other.
5. A temperature regulating device, characterized in that the temperature regulating device has a temperature regulating plate as claimed in any one of claims 1 to 4, and a fluid and an auxiliary fluid are flowed through the temperature regulating plate to regulate the temperature of a battery pack.
6. The temperature regulating device according to claim 5, further comprising a detecting unit and a control unit, wherein the detecting unit comprises at least one detector, the detector is arranged between two adjacent branch inlets, the detector is electrically connected with the control unit, and the control unit is connected with the branch inlets; the detector is used for detecting the temperature of the corresponding area of the battery pack, and the control unit is used for controlling the entering condition of the auxiliary fluid in the branch inlet according to the temperature.
7. Thermostat according to claim 6, characterized in that the control unit comprises a controller and at least one flow regulator, which is connected to the respective branch and each of which is connected to the controller; each detector is connected with the controller; the controller is used for receiving the temperature signal of the detector and controlling the corresponding flow regulator to regulate the inlet flow of the auxiliary fluid in the corresponding branch inlet according to the temperature signal.
8. The thermostat of claim 7, wherein the flow regulator comprises at least one of a water pump and a regulator valve; and/or the controller is a battery management system.
9. A temperature adjusting method, wherein the temperature adjusting method employs the temperature adjusting device according to any one of claims 5 to 8, and flows a fluid and an auxiliary fluid through the temperature adjusting plate to adjust the temperature of a battery pack; the temperature adjusting method comprises the following steps:
controlling the fluid to enter the plate body of the temperature-regulating plate from the main inlet;
controlling the auxiliary fluid to enter the corresponding branch inlet;
controlling a mixed liquid of the fluid and the secondary fluid to flow out of the primary outlet.
10. A temperature regulating method according to claim 9, wherein said temperature regulating device further comprises a detecting unit and a control unit, said detecting unit comprises at least one detector, said detector is arranged between two adjacent branch inlets, said detector is electrically connected with said control unit, said control unit is connected with said branch inlets;
the controlling the auxiliary fluid to enter the corresponding branch inlet comprises:
a detector in the detection unit detects temperature information of a corresponding area of the battery pack;
the control unit generates control information according to the temperature information and controls the entering condition of the auxiliary fluid in the branch inlet at the upstream of the corresponding area according to the control information; wherein the control information includes a temperature and a flow rate of the secondary fluid.
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| CN202210347638.7A CN114614159A (en) | 2022-04-01 | 2022-04-01 | Temperature adjusting plate, temperature adjusting device and temperature adjusting method |
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| CN202210347638.7A CN114614159A (en) | 2022-04-01 | 2022-04-01 | Temperature adjusting plate, temperature adjusting device and temperature adjusting method |
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