CN210092294U - Module heating system, battery system and power automobile - Google Patents
Module heating system, battery system and power automobile Download PDFInfo
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- CN210092294U CN210092294U CN201921531641.4U CN201921531641U CN210092294U CN 210092294 U CN210092294 U CN 210092294U CN 201921531641 U CN201921531641 U CN 201921531641U CN 210092294 U CN210092294 U CN 210092294U
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The application provides a module heating system, battery system and power automobile relates to battery thermal management field. This application carries out the temperature perception through first temperature-sensing piece to the first side region that is close to the positive terminal of battery module, carry out the temperature perception to the second side region that is close to the negative pole end of this battery module through the second temperature-sensing piece, and by the partial pressure subassembly according to the temperature adjustment of first temperature-sensing piece conduction and the operating voltage of the first heating film of first side region contact, the operating voltage of the second heating film of temperature adjustment according to second temperature-sensing piece conduction and second side region contact by the partial pressure subassembly, make the operating voltage of every heating film and the regional temperature negative correlation of the side of its contact, let the regional heating power of the side that the temperature is high be less than the regional heating power of the side that the temperature is low, thereby reduce the difference in temperature between positive terminal portion region and the negative terminal portion region, improve the charge-discharge performance of battery module, prolong its life.
Description
Technical Field
The application relates to the field of battery heat management, in particular to a module heating system, a battery system and a power automobile.
Background
With the popularization and development of new energy technology, the application of new energy battery systems is more and more extensive, and the use of pure electric vehicles or hybrid electric vehicles is also more and more popular. The battery module that constitutes battery system can lead to having great difference in temperature between the battery module different positions because of factors such as electric core electrode distribution or natural convection at the charge-discharge in-process usually, wherein is particularly more outstanding with the difference in temperature between the position that is close to the positive pole end of battery module and the position that is close to the negative pole end, and then influences the charge-discharge performance and the life of battery module.
SUMMERY OF THE UTILITY MODEL
In view of this, an object of the present application is to provide a module heating system, a battery system and a power vehicle, which can adjust heating power for a side area corresponding to different electrode ends of a battery module according to temperatures of the side area, reduce a temperature difference between a positive electrode end area and a negative electrode end area of the battery module, and make the positive electrode end temperature and the negative electrode end temperature of the battery module tend to be consistent, so as to improve charge and discharge performance of the battery module and prolong a service life of the battery module.
In a first aspect, an embodiment of the present application provides a module heating system, where the module heating system includes a first heating film, a second heating film, a first temperature sensing element, a second temperature sensing element, and a voltage dividing assembly;
the first heating film is in contact with a first side surface area of the battery module, the second heating film is in contact with a second side surface area of the battery module, the first side surface area is arranged close to the positive end of the battery module, the second side surface area is arranged close to the negative end of the battery module opposite to the positive end, and the first heating film and the second heating film respectively heat the side surface areas in contact with each other;
the first temperature sensing element is in contact with the first side surface area, the second temperature sensing element is in contact with the second side surface area, and the first temperature sensing element and the second temperature sensing element respectively sense the temperature of the contacted side surface areas;
the voltage division component is in contact with the first temperature sensing part, is electrically connected with the first heating film, and is used for adjusting the working voltage of the first heating film according to the temperature conducted by the first temperature sensing part, so that the working voltage of the first heating film is in negative correlation with the temperature conducted by the first temperature sensing part;
the voltage dividing assembly is in contact with the second temperature sensing piece, is electrically connected with the second heating film, and is used for adjusting the working voltage of the second heating film according to the temperature conducted by the second temperature sensing piece, so that the working voltage of the second heating film is in negative correlation with the temperature conducted by the second temperature sensing piece.
In an alternative embodiment, the voltage divider assembly includes a first expansion structure and a first sliding varistor;
the first expansion structure is in contact with the first temperature sensing element, and changes the volume of the structure according to the temperature conducted by the first temperature sensing element;
the first expansion structure is adhered to the sliding sheet of the first slide rheostat, and drives the sliding sheet on the first slide rheostat to slide when the volume of the first expansion structure is changed, so as to adjust the resistance value of the first slide rheostat, and the resistance value of the first slide rheostat is positively correlated with the temperature conducted by the first temperature sensing element;
the first slide rheostat is connected with the first heating film in series and used for dividing the working voltage of the first heating film.
In an alternative embodiment, the voltage dividing assembly comprises a first thermistor, wherein the resistance value of the first thermistor is positively correlated with the temperature;
the first thermistor is in contact with the first temperature sensing element, is connected with the first heating film in series, and is used for dividing the working voltage of the first heating film according to the temperature conducted by the first temperature sensing element.
In an alternative embodiment, the voltage divider assembly further comprises a second expansion structure and a second sliding varistor;
the second expansion structure is in contact with the second temperature sensing element, and changes the volume of the structure according to the temperature conducted by the second temperature sensing element;
the second expansion structure is adhered to the sliding sheet of the second slide rheostat, and drives the sliding sheet on the second slide rheostat to slide when the volume of the second expansion structure is changed, so as to adjust the resistance value of the second slide rheostat, and the resistance value of the second slide rheostat is positively correlated with the temperature conducted by the second temperature sensing element;
the second slide rheostat is connected with the second heating film in series and used for dividing the working voltage of the second heating film.
In an alternative embodiment, the voltage dividing assembly further comprises a second thermistor, wherein the resistance value of the second thermistor is positively correlated with the temperature;
the second thermistor is in contact with the second temperature sensing element, is connected with the second heating film in series, and is used for dividing the working voltage of the second heating film according to the temperature conducted by the second temperature sensing element.
In an alternative embodiment, the voltage divider assembly includes a connector, a third expansion structure, a fourth expansion structure, a third sliding varistor, and a fourth sliding varistor;
the third expansion structure is in contact with the first temperature sensing element and changes the volume of the structure according to the temperature conducted by the first temperature sensing element;
the fourth expansion structure is in contact with the second temperature sensing element and changes the volume of the structure according to the temperature conducted by the second temperature sensing element;
the third expansion structure and the fourth expansion structure are arranged opposite to each other, and the connecting piece is arranged between the third expansion structure and the fourth expansion structure, is adhered to the third expansion structure and the fourth expansion structure, and is used for moving in a direction close to the third expansion structure or the fourth expansion structure under the action of the third expansion structure and the fourth expansion structure;
the connecting piece is fixedly connected with the sliding sheet of the third slide rheostat and fixedly connected with the sliding sheet of the fourth slide rheostat and used for driving the sliding sheet on the third slide rheostat and the sliding sheet on the fourth slide rheostat to slide when the connecting piece moves, wherein the resistance value of the third slide rheostat is inversely related to the resistance value of the fourth slide rheostat;
the third slide rheostat is connected with the first heating film in series and used for dividing the working voltage of the first heating film;
the fourth slide rheostat is connected with the second heating film in series and used for dividing the working voltage of the second heating film.
In an alternative embodiment, the first temperature sensing element and the second temperature sensing element are both capillary tubes.
In an alternative embodiment, the heating body in the first heating film and the heating body in the second heating film are both in a zigzag structure.
In a second aspect, an embodiment of the present application provides a battery system, where the battery system includes a battery module and the module heating system described in any one of the foregoing embodiments, and the module heating system is in contact with the battery module and is configured to heat the battery module.
In a third aspect, an embodiment of the present application provides a power automobile, where the power automobile includes a power automobile body and the battery system described in the foregoing embodiment, and the battery system is electrically connected to the power automobile body and is configured to provide electric energy to the power automobile body.
Compared with the prior art, the method has the following beneficial effects:
the temperature sensing device senses the temperature of a first side surface area of a battery module close to a positive end through a first temperature sensing piece, senses the temperature of a second side surface area of the battery module close to a negative end through a second temperature sensing piece, wherein the positive end and the negative end are arranged oppositely, the working voltage of a first heating film in contact with the first side surface area is adjusted by a voltage dividing assembly according to the temperature conducted by the first temperature sensing piece, the working voltage of a second heating film in contact with the second side surface area is adjusted by the voltage dividing assembly according to the temperature conducted by the second temperature sensing piece, so that the working voltage of each heating film is in negative correlation with the temperature of the side surface area in contact with the heating film, the heating power of the area with high temperature in the two side surface areas is smaller than that of the area with low temperature, the temperature difference between the area of the positive end part and the area of the negative end part of the battery module is reduced, and the temperatures of the positive end part and the negative end part, improve the charge-discharge performance of the battery module and prolong the service life of the battery module.
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
Fig. 1 is a schematic structural diagram of a battery system according to an embodiment of the present disclosure;
FIG. 2 is a schematic view of an installation of a voltage divider assembly according to an embodiment of the present disclosure;
fig. 3 is a second schematic view illustrating an installation of a voltage divider according to an embodiment of the present application;
fig. 4 is a third schematic view illustrating an installation of a voltage divider according to an embodiment of the present disclosure;
FIG. 5 is a fourth illustration of the installation of the voltage divider assembly according to the embodiment of the present application;
fig. 6 is a fifth schematic view illustrating an installation of a voltage divider according to an embodiment of the present application.
Icon: 10-a battery system; 100-modular heating system; 200-a battery module; 210-positive terminal; 220-negative terminal; 230-a first side area; 240-a second side area; 110-a first heating film; 120-a second heating film; 130-a first temperature sensing element; 140-a second temperature sensing element; 150-a voltage divider component; 151-first expanded configuration; 152-a first sliding varistor; 153-a first thermistor; 154-a second expanded configuration; 155-a second sliding varistor; 156-a second thermistor; 157-a connector; 158-a third expanded configuration; 159-a fourth expanded configuration; 161-a third slide varistor; 162-fourth sliding varistor.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present application, it should be noted that unless otherwise explicitly stated or limited, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships that are based on the orientations or positional relationships shown in the drawings, or the orientations or positional relationships that the product of the application is conventionally placed in use, or the orientations or positional relationships that are conventionally understood by those skilled in the art, and are used merely for convenience of describing the present application and simplifying the description, but do not indicate or imply that the equipment or element that is referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present application.
Furthermore, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may include, for example, fixed connections, removable connections, or integral connections; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
In the description of the present application, it is further noted that relational terms such as the terms first and second, and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Some embodiments of the present application will be described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a battery system 10 according to an embodiment of the present disclosure. In the embodiment of the present application, the battery system 10 includes a battery module 200 and a module heating system 100, the module heating system 100 is in contact with the battery module 200, and is configured to heat the battery module 200 to reduce a temperature difference between a positive end region and a negative end region of the battery module 200, so that temperatures of the positive end region and the negative end region of the battery module 200 tend to be the same, thereby improving charge and discharge performance of the battery module 200, and prolonging a service life of the battery module 200. The positive end of the battery module 200 is a space where the positive electrode of the most of the cells arranged in the battery module 200 is located, and the negative end of the battery module 200 is a space where the negative electrode of the most of the cells arranged in the battery module 200 is located.
In this embodiment, the battery module 200 includes a positive terminal 210 and a negative terminal 220 that are disposed oppositely, where the positive terminal 210 is the one end of the battery module 200 that is close to the positive pole of most of the electric cores, and the negative terminal 220 is the one end of the battery module 200 that is close to the negative pole of most of the electric cores. The battery module 200 further includes a first side surface region 230 and a second side surface region 240, the first side surface region 230 is a region on a side surface of the battery module 200 near the positive electrode terminal 210, and the second side surface region 240 is a region on a side surface of the battery module 200 near the negative electrode terminal 220.
In the embodiment of the present invention, the module heating system 100 includes a first heating film 110, a second heating film 120, a first temperature sensing element 130, a second temperature sensing element 140, and a voltage dividing assembly 150, wherein the first heating film 110 is used for heating a first side surface region 230 of the battery module 200, the second heating film 120 is used for heating a second side surface region 240 of the battery module 200, the first temperature sensing element 130 is used for sensing the temperature of the first side surface region 230, the second temperature sensing element 140 is used for sensing the temperature of the second side surface region 240, the voltage dividing assembly 150 is used for adjusting the working voltage of the first heating film 110 and adjusting the working voltage of the second heating film 120 to adjust the respective heating powers of the first heating film 110 and the second heating film 120, so that the temperatures of the positive end region and the negative end region of the battery module 200 gradually tend to be the same, the temperature difference between the positive electrode end region and the negative electrode end region of the battery module 200 is reduced, so that the charge and discharge performance of the battery module 200 is improved, and the service life of the battery module 200 is prolonged.
In this embodiment, the first heating film 110 is in contact with the first side surface area 230 of the battery module 200, and is used for performing a heating process on the first side surface area 230 to adjust the temperature of the positive electrode end of the battery module 200; the second heating film 120 is in contact with the second side region 240 of the battery module 200, and is used to heat the second side region 240 to adjust the temperature of the negative electrode end of the battery module 200.
In this embodiment, the first temperature sensing element 130 is in contact with the first side surface area 230, and is configured to sense the temperature of the first side surface area 230 under the action of the first heating film 110; the second temperature sensing element 140 is in contact with the second side surface area 240, and is configured to sense the temperature of the second side surface area 240 under the action of the second heating film 120.
In this embodiment, the voltage divider 150 is in contact with the first temperature sensing element 130, and is configured to receive the temperature of the first side region 230 conducted by the first temperature sensing element 130. The voltage dividing assembly 150 is electrically connected to the first heating film 110, and is configured to adjust the working voltage of the first heating film 110 according to the temperature conducted by the first temperature sensing element 130, so that the working voltage of the first heating film 110 is inversely related to the temperature conducted by the first temperature sensing element 130, that is, if the temperature of the first side surface area 230 is higher, the working voltage of the first heating film 110 is smaller, the heating power of the first heating film 110 is smaller, and the heat that the first heating film 110 can provide to the first side surface area 230 is smaller.
In this embodiment, the voltage divider 150 is in contact with the second temperature sensing element 140, and is configured to receive the temperature of the second side area 240 conducted by the second temperature sensing element 140. The voltage dividing assembly 150 is electrically connected to the second heating film 120, and is configured to adjust the operating voltage of the second heating film 120 according to the temperature conducted by the second temperature sensing element 140, so that the operating voltage of the second heating film 120 is inversely related to the temperature conducted by the second temperature sensing element 140, that is, if the temperature of the second side surface area 240 is lower, the operating voltage of the second heating film 120 is higher, the heating power of the second heating film 120 is higher, and the second heating film 120 can provide more heat to the second side surface area 240.
In this embodiment, the module heating system 100 adjusts the heating power of the side area according to the temperatures of the different side areas of the battery module 200 through the voltage dividing assembly 150, so that the heating power of the area with a high temperature in the two side areas is smaller than the heating power of the area with a low temperature, thereby reducing the temperature difference between the positive end area and the negative end area of the battery module 200, ensuring that the temperatures of the positive end and the negative end of the battery module 200 gradually tend to be consistent, improving the charging and discharging performance of the battery module 200, and prolonging the service life of the battery module 200.
Optionally, referring to fig. 2, fig. 2 is a schematic view illustrating an installation of the voltage divider assembly 150 according to an embodiment of the present disclosure. In the first embodiment of this embodiment, the voltage divider assembly 150 includes a first expansion structure 151, a first sliding resistor 152, a second expansion structure 154, and a second sliding resistor 155.
Specifically, the first expansion structure 151 is in contact with the first temperature sensing element 130 and changes its volume according to the temperature conducted by the first temperature sensing element 130. The first expansion structure 151 is adhered to the sliding piece of the first slide rheostat 152, and drives the sliding piece on the first slide rheostat 152 to slide when the volume of the first expansion structure 151 is changed, so as to adjust the resistance value of the first slide rheostat 152, such that the resistance value of the first slide rheostat 152 is positively correlated with the temperature conducted by the first temperature sensing element 130, that is, the higher the temperature of the first side surface area 230 is, the higher the resistance value of the first slide rheostat 152 is. The first sliding resistor 152 is connected in series with the first heating film 110 and is configured to divide the operating voltage of the first heating film 110, that is, if the resistance value of the first sliding resistor 152 is larger, the operating voltage of the first heating film 110 is smaller, and the heating power of the first heating film 110 is smaller.
The second expansion structure 154 is in contact with the second temperature sensing element 140 and changes its volume according to the temperature conducted by the second temperature sensing element 140. The second expansion structure 154 is adhered to the sliding piece of the second slide rheostat 155, and drives the sliding piece on the second slide rheostat 155 to slide when the volume of the second expansion structure 154 is changed, so as to adjust the resistance value of the second slide rheostat 155, such that the resistance value of the second slide rheostat 155 is positively correlated with the temperature conducted by the second temperature sensing element 140, that is, the lower the temperature of the second side surface area 240 is, the lower the resistance value of the second slide rheostat 155 is. The second slide resistor 155 is connected in series with the second heating film 120, and is configured to divide the operating voltage of the second heating film 120, that is, if the resistance value of the second slide resistor 155 is smaller, the operating voltage of the second heating film 120 is larger, and the heating power of the second heating film 120 is larger.
The first expansion structure 151 may be a thermosensitive structure that expands with increasing temperature and contracts with decreasing temperature, or a thermosensitive structure that contracts with increasing temperature and expands with decreasing temperature; the second expandable structure 154 may be a heat sensitive structure that expands with increasing temperature and contracts with decreasing temperature, or a heat sensitive structure that contracts with increasing temperature and expands with decreasing temperature. The temperature dependent deformation characteristics of the first and second expansion structures 151 and 154 may be selected differently as desired.
Optionally, referring to fig. 3, fig. 3 is a second schematic view illustrating an installation of the voltage divider assembly 150 according to an embodiment of the present application. In a second implementation manner of this embodiment, the voltage dividing assembly 150 includes a first thermistor 153, a second expansion structure 154 and a second sliding rheostat 155, wherein a resistance value of the first thermistor 153 is positively correlated to a temperature.
Specifically, the first thermistor 153 is in contact with the first temperature sensing element 130, is connected in series with the first heating film 110, and is configured to divide the operating voltage of the first heating film 110 according to the temperature corresponding to the first side surface area 230 conducted by the first temperature sensing element 130, wherein if the temperature of the first side surface area 230 is higher, the resistance value of the first thermistor 153 is higher, and the operating voltage of the first heating film 110 is lower, and the heating power of the first heating film 110 is lower.
The second expansion structure 154 is in contact with the second temperature sensing element 140 and changes its volume according to the temperature conducted by the second temperature sensing element 140. The second expansion structure 154 is adhered to the sliding piece of the second slide rheostat 155, and drives the sliding piece on the second slide rheostat 155 to slide when the volume of the second expansion structure 154 is changed, so as to adjust the resistance value of the second slide rheostat 155, such that the resistance value of the second slide rheostat 155 is positively correlated with the temperature conducted by the second temperature sensing element 140, that is, the lower the temperature of the second side surface area 240 is, the lower the resistance value of the second slide rheostat 155 is. The second slide resistor 155 is connected in series with the second heating film 120, and is configured to divide the operating voltage of the second heating film 120, that is, if the resistance value of the second slide resistor 155 is smaller, the operating voltage of the second heating film 120 is larger, and the heating power of the second heating film 120 is larger.
The second expansion structure 154 may be a heat-sensitive structure that expands with increasing temperature and contracts with decreasing temperature, or a heat-sensitive structure that contracts with increasing temperature and expands with decreasing temperature. In this case, the temperature-dependent deformation characteristics of the second expansion structure 154 may be selected differently according to the requirements.
Optionally, referring to fig. 4, fig. 4 is a third schematic view illustrating an installation of the voltage divider assembly 150 according to an embodiment of the present disclosure. In the third embodiment of the present embodiment, the voltage divider assembly 150 includes a first expansion structure 151, a first sliding resistor 152, and a second thermistor 156, wherein the resistance value of the second thermistor 156 is positively correlated to the temperature.
Specifically, the first expansion structure 151 is in contact with the first temperature sensing element 130 and changes its volume according to the temperature conducted by the first temperature sensing element 130. The first expansion structure 151 is adhered to the sliding piece of the first slide rheostat 152, and drives the sliding piece on the first slide rheostat 152 to slide when the volume of the first expansion structure 151 is changed, so as to adjust the resistance value of the first slide rheostat 152, such that the resistance value of the first slide rheostat 152 is positively correlated with the temperature conducted by the first temperature sensing element 130, that is, the higher the temperature of the first side surface area 230 is, the higher the resistance value of the first slide rheostat 152 is. The first sliding resistor 152 is connected in series with the first heating film 110 and is configured to divide the operating voltage of the first heating film 110, that is, if the resistance value of the first sliding resistor 152 is larger, the operating voltage of the first heating film 110 is smaller, and the heating power of the first heating film 110 is smaller.
The second thermistor 156 is in contact with the second temperature sensing element 140, is connected in series with the second heating film 120, and is configured to divide the operating voltage of the second heating film 120 according to the temperature of the second side region 240, which is transmitted by the second temperature sensing element 140, wherein if the temperature of the second side region 240 is lower, the resistance value of the second thermistor 156 is smaller, and the operating voltage of the second heating film 120 is larger, and the heating power of the second heating film 120 is larger.
The first expansion structure 151 may be a thermosensitive structure that expands with an increase in temperature and contracts with a decrease in temperature, or a thermosensitive structure that contracts with an increase in temperature and expands with a decrease in temperature. In this case, the temperature-dependent deformation characteristics of the first expansion structure 151 may be variously selected according to the requirement.
Optionally, referring to fig. 5, fig. 5 is a fourth schematic view illustrating an installation of the voltage divider assembly 150 according to an embodiment of the present application. In the fourth embodiment of the present invention, the voltage dividing assembly 150 includes a first thermistor 153 and a second thermistor 156, wherein the resistance of the first thermistor 153 is positively correlated to the temperature, and the resistance of the second thermistor 156 is positively correlated to the temperature.
Specifically, the first thermistor 153 is in contact with the first temperature sensing element 130, is connected in series with the first heating film 110, and is configured to divide the operating voltage of the first heating film 110 according to the temperature corresponding to the first side surface area 230 conducted by the first temperature sensing element 130, wherein if the temperature of the first side surface area 230 is higher, the resistance value of the first thermistor 153 is higher, and the operating voltage of the first heating film 110 is lower, and the heating power of the first heating film 110 is lower.
The second thermistor 156 is in contact with the second temperature sensing element 140, is connected in series with the second heating film 120, and is configured to divide the operating voltage of the second heating film 120 according to the temperature of the second side region 240, which is transmitted by the second temperature sensing element 140, wherein if the temperature of the second side region 240 is lower, the resistance value of the second thermistor 156 is smaller, and the operating voltage of the second heating film 120 is larger, and the heating power of the second heating film 120 is larger.
Optionally, referring to fig. 6, fig. 6 is a fifth schematic view illustrating an installation of the voltage divider assembly 150 according to an embodiment of the present application. In a fifth embodiment of the present embodiment, the voltage divider assembly 150 includes a connecting member 157, a third expansion structure 158, a fourth expansion structure 159, a third slide rheostat 161 and a fourth slide rheostat 162.
Specifically, the third expansion structure 158 is in contact with the first temperature sensing element 130 and changes structural volume in response to the temperature conducted by the first temperature sensing element 130. The fourth expansion structure 159 is in contact with the second temperature sensing element 140 and changes its volume according to the temperature sensed by the second temperature sensing element 140. The third expansion structure 158 is disposed opposite to the fourth expansion structure 159, and the connection member 157 is disposed between the third expansion structure 158 and the fourth expansion structure 159, and is adhered to the third expansion structure 158 and the fourth expansion structure 159, and is configured to move in a direction approaching the third expansion structure 158 or the fourth expansion structure 159 under the action of the third expansion structure 158 and the fourth expansion structure 159.
The connecting member 157 is fixedly connected to the sliding piece of the third slide varistor 161 and fixedly connected to the sliding piece of the fourth slide varistor 162, and is configured to drive the sliding piece of the third slide varistor 161 and the sliding piece of the fourth slide varistor 162 to slide when the connecting member 157 moves, wherein a resistance value of the third slide varistor 161 is inversely related to a resistance value of the fourth slide varistor 162, and a resistance value of the third slide varistor 161 is positively related to a temperature difference between the first side surface area 230 and the second side surface area 240.
The third slide resistor 161 is connected in series with the first heating film 110, and is configured to divide the operating voltage of the first heating film 110, that is, if the resistance value of the third slide resistor 161 is larger, the operating voltage of the first heating film 110 is smaller, and the heating power of the first heating film 110 is smaller. The fourth sliding resistor 162 is connected in series with the second heating film 120, and is used for dividing the operating voltage of the second heating film 120, that is, if the resistance value of the fourth sliding resistor 162 is smaller, the operating voltage of the second heating film 120 is larger, and the heating power of the second heating film 120 is larger.
Wherein, if the third expansion structure 158 is a thermal sensitive structure which expands with increasing temperature and contracts with decreasing temperature, and the fourth expansion structure 159 is a thermal sensitive structure which expands with increasing temperature and contracts with decreasing temperature, when the connecting member 157 moves in a direction close to the fourth expansion structure 159, it indicates that the temperature difference between the first side area 230 and the second side area 240 increases, at this time, the resistance value of the third sliding resistor 161 increases, the resistance value of the fourth sliding resistor 162 decreases, that is, the heating power of the first heating film 110 decreases, the heating power of the second heating film 120 increases, and when the connecting member 157 moves in a direction close to the third expansion structure 158, it indicates that the temperature difference between the first side area 230 and the second side area 240 decreases, at this time, the resistance value of the third slide resistor 161 is decreased, the resistance value of the fourth slide resistor 162 is increased, that is, the heating power of the first heating film 110 is increased, and the heating power of the second heating film 120 is decreased.
If the third expansion structure 158 is a thermal sensitive structure which shrinks with increasing temperature and expands with decreasing temperature, and the fourth expansion structure 159 is a thermal sensitive structure which shrinks with increasing temperature and expands with decreasing temperature, when the connection member 157 moves in a direction close to the third expansion structure 158, it indicates that the temperature difference between the first side area 230 and the second side area 240 increases, at which time the resistance value of the third sliding resistor 161 increases, the resistance value of the fourth sliding resistor 162 decreases, i.e. the heating power of the first heating film 110 decreases, the heating power of the second heating film 120 increases, and when the connection member 157 moves in a direction close to the fourth expansion structure 159, it indicates that the temperature difference between the first side area 230 and the second side area 240 decreases, at this time, the resistance value of the third slide resistor 161 is decreased, the resistance value of the fourth slide resistor 162 is increased, that is, the heating power of the first heating film 110 is increased, and the heating power of the second heating film 120 is decreased.
In the embodiment of the present application, the module heating system 100 implements the operation of adjusting the heating power at different side areas of the battery module 200 through any one of the voltage dividing assemblies 150 shown in fig. 2, 3, 4, 5 and 6, so that the heating power at the area with a high temperature in the two side areas is smaller than the heating power at the area with a low temperature, thereby reducing the temperature difference between the positive end area and the negative end area of the battery module 200, ensuring that the temperatures of the positive end and the negative end of the battery module 200 gradually approach to be consistent, improving the charging and discharging performance of the battery module 200, and prolonging the service life of the battery module 200.
In the embodiment of the present application, the first temperature sensing element 130 and the second temperature sensing element 140 are both capillaries, which are used to ensure that the first temperature sensing element 130 can conduct the temperature of the first side surface region 230 to the voltage dividing assembly 150, and ensure that the second temperature sensing element 140 can conduct the temperature of the second side surface region 240 to the voltage dividing assembly 150.
In this application embodiment, be used for in first heating film 110 to realize the heating effect the heating body with the heating body that is used for in the second heating film 120 to realize the heating effect is zigzag structure, wherein the tortuous extending direction of the heating body in every heating film with the length extending direction of electricity core is perpendicular in battery module 200 for guarantee that the heating body can correspondingly stretch out the motion when electric core takes place the inflation phenomenon, avoid the heating body to take place to split.
The application also provides a power automobile, power automobile includes power automobile body and foretell battery system 10, battery system 10 with power automobile body electric connection, be used for to power automobile body provides the electric energy, ensures power automobile body can normally travel.
In summary, in the module heating system, the battery system and the power vehicle provided in the embodiments of the present application, the first temperature sensing element senses the temperature of the first side surface area of the battery module near the positive end, and the second temperature sensing element senses the temperature of the second side surface area of the battery module near the negative end, wherein the positive end and the negative end are disposed opposite to each other, the voltage dividing assembly adjusts the working voltage of the first heating film contacting the first side surface area according to the temperature conducted by the first temperature sensing element, the voltage dividing assembly adjusts the working voltage of the second heating film contacting the second side surface area according to the temperature conducted by the second temperature sensing element, so that the working voltage of each heating film is inversely related to the temperature of the side surface area contacting the heating film, and the heating power at the area with high temperature in the two side surface areas is smaller than the heating power at the area with low temperature, thereby reduce the regional difference in temperature between the positive pole tip of battery module and the negative pole tip, make the temperature of the positive pole tip of battery module and negative pole tip tend to unanimous, improve the charge-discharge performance of battery module, prolong the life of battery module.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. A module heating system is characterized by comprising a first heating film, a second heating film, a first temperature sensing element, a second temperature sensing element and a voltage dividing assembly;
the first heating film is in contact with a first side surface area of the battery module, the second heating film is in contact with a second side surface area of the battery module, the first side surface area is arranged close to the positive end of the battery module, the second side surface area is arranged close to the negative end of the battery module opposite to the positive end, and the first heating film and the second heating film respectively heat the side surface areas in contact with each other;
the first temperature sensing element is in contact with the first side surface area, the second temperature sensing element is in contact with the second side surface area, and the first temperature sensing element and the second temperature sensing element respectively sense the temperature of the contacted side surface areas;
the voltage division component is in contact with the first temperature sensing part, is electrically connected with the first heating film, and is used for adjusting the working voltage of the first heating film according to the temperature conducted by the first temperature sensing part, so that the working voltage of the first heating film is in negative correlation with the temperature conducted by the first temperature sensing part;
the voltage dividing assembly is in contact with the second temperature sensing piece, is electrically connected with the second heating film, and is used for adjusting the working voltage of the second heating film according to the temperature conducted by the second temperature sensing piece, so that the working voltage of the second heating film is in negative correlation with the temperature conducted by the second temperature sensing piece.
2. The modular heating system of claim 1 wherein the voltage divider assembly comprises a first expansion structure and a first sliding varistor;
the first expansion structure is in contact with the first temperature sensing element, and changes the volume of the structure according to the temperature conducted by the first temperature sensing element;
the first expansion structure is adhered to the sliding sheet of the first slide rheostat, and drives the sliding sheet on the first slide rheostat to slide when the volume of the first expansion structure is changed, so as to adjust the resistance value of the first slide rheostat, and the resistance value of the first slide rheostat is positively correlated with the temperature conducted by the first temperature sensing element;
the first slide rheostat is connected with the first heating film in series and used for dividing the working voltage of the first heating film.
3. The modular heating system of claim 1 wherein the voltage divider assembly comprises a first thermistor, wherein the resistance of the first thermistor is positively correlated with temperature;
the first thermistor is in contact with the first temperature sensing element, is connected with the first heating film in series, and is used for dividing the working voltage of the first heating film according to the temperature conducted by the first temperature sensing element.
4. The modular heating system of claim 2 or 3, wherein the voltage divider assembly further comprises a second expansion structure and a second sliding varistor;
the second expansion structure is in contact with the second temperature sensing element, and changes the volume of the structure according to the temperature conducted by the second temperature sensing element;
the second expansion structure is adhered to the sliding sheet of the second slide rheostat, and drives the sliding sheet on the second slide rheostat to slide when the volume of the second expansion structure is changed, so as to adjust the resistance value of the second slide rheostat, and the resistance value of the second slide rheostat is positively correlated with the temperature conducted by the second temperature sensing element;
the second slide rheostat is connected with the second heating film in series and used for dividing the working voltage of the second heating film.
5. The modular heating system of claim 2 or 3, wherein the voltage divider assembly further comprises a second thermistor, wherein the resistance value of the second thermistor is positively correlated to the temperature;
the second thermistor is in contact with the second temperature sensing element, is connected with the second heating film in series, and is used for dividing the working voltage of the second heating film according to the temperature conducted by the second temperature sensing element.
6. The modular heating system of claim 1, wherein the voltage divider assembly comprises a connector, a third expansion structure, a fourth expansion structure, a third sliding varistor, and a fourth sliding varistor;
the third expansion structure is in contact with the first temperature sensing element and changes the volume of the structure according to the temperature conducted by the first temperature sensing element;
the fourth expansion structure is in contact with the second temperature sensing element and changes the volume of the structure according to the temperature conducted by the second temperature sensing element;
the third expansion structure and the fourth expansion structure are arranged opposite to each other, and the connecting piece is arranged between the third expansion structure and the fourth expansion structure, is adhered to the third expansion structure and the fourth expansion structure, and is used for moving in a direction close to the third expansion structure or the fourth expansion structure under the action of the third expansion structure and the fourth expansion structure;
the connecting piece is fixedly connected with the sliding sheet of the third slide rheostat and fixedly connected with the sliding sheet of the fourth slide rheostat and used for driving the sliding sheet on the third slide rheostat and the sliding sheet on the fourth slide rheostat to slide when the connecting piece moves, wherein the resistance value of the third slide rheostat is inversely related to the resistance value of the fourth slide rheostat;
the third slide rheostat is connected with the first heating film in series and used for dividing the working voltage of the first heating film;
the fourth slide rheostat is connected with the second heating film in series and used for dividing the working voltage of the second heating film.
7. The modular heating system of claim 1 wherein the first and second temperature-sensing elements are capillary tubes.
8. The modular heating system of claim 1, wherein the heaters in the first heating film and the heaters in the second heating film are each a meander-like structure.
9. A battery system comprising a battery module and the module heating system of any one of claims 1 to 8, the module heating system being in contact with the battery module for heat-treating the battery module.
10. A power vehicle comprising a power vehicle body and the battery system of claim 9, wherein the battery system is electrically connected to the power vehicle body for providing electrical energy to the power vehicle body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921531641.4U CN210092294U (en) | 2019-09-12 | 2019-09-12 | Module heating system, battery system and power automobile |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921531641.4U CN210092294U (en) | 2019-09-12 | 2019-09-12 | Module heating system, battery system and power automobile |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110474132A (en) * | 2019-09-12 | 2019-11-19 | 华霆（合肥）动力技术有限公司 | Mould group heating system, battery system and power vehicle |
| CN112987389A (en) * | 2021-05-06 | 2021-06-18 | 深圳市高展光电有限公司 | LCD display screen capable of automatically filtering light |
-
2019
- 2019-09-12 CN CN201921531641.4U patent/CN210092294U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110474132A (en) * | 2019-09-12 | 2019-11-19 | 华霆（合肥）动力技术有限公司 | Mould group heating system, battery system and power vehicle |
| CN112987389A (en) * | 2021-05-06 | 2021-06-18 | 深圳市高展光电有限公司 | LCD display screen capable of automatically filtering light |
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