CN214542347U - Battery preheating and waste heat utilization system of new energy automobile - Google Patents
Battery preheating and waste heat utilization system of new energy automobile Download PDFInfo
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- CN214542347U CN214542347U CN202120353272.5U CN202120353272U CN214542347U CN 214542347 U CN214542347 U CN 214542347U CN 202120353272 U CN202120353272 U CN 202120353272U CN 214542347 U CN214542347 U CN 214542347U
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Abstract
The utility model provides a new energy automobile's battery preheats and waste heat utilization system, include: a battery bin and a heat exchange box body; the upper surface of the battery compartment is connected with a first heating plate, and the lower surface of the battery compartment is fixedly connected with a second heating plate; one side of the first heating plate, which is far away from the battery bin, is fixedly connected with a first heat dissipation plate; one side of the second heating plate, which is far away from the battery bin, is fixedly connected with a second heat dissipation plate; the heat exchange medium inlets of the first heat dissipation plate and the second heat dissipation plate are connected with a first electric water pump through pipelines; the heat exchange medium outlets of the first heat dissipation plate and the second heat dissipation plate are connected with a second electric water pump through pipelines; the heat exchange box body is provided with a first heat exchange pipeline; the first heat exchange pipeline is connected with an outlet of the box body; the inlet of the box body is connected with a second electric water pump through a pipeline; the heat exchange box body is provided with a second heat exchange pipeline, and the second heat exchange pipeline is sequentially connected with a third electric water pump and a waste heat discharging radiator. The battery compartment can be effectively preheated and the heat accumulated on the surface can be led out to be used as a heat source for heating in a vehicle.
Description
Technical Field
The application relates to the technical field of new energy vehicles, in particular to a battery preheating and waste heat utilization system of a new energy vehicle.
Background
At present, with the vigorous push of the national new energy policy, the market of the pure electric vehicle is also rapidly developed, in the field of the pure electric vehicle, the storage capacity of a battery pack is the most main bottleneck restricting the development of the pure electric vehicle, the battery pack of the pure electric vehicle can release a large amount of heat in the discharging process, which is one of main reasons causing the performance attenuation and the service life shortening of the battery pack, and the release of the heat also easily causes the fire hazard, so that the battery pack of the pure electric vehicle needs to be effectively radiated in the running process of the pure electric vehicle. Meanwhile, the pure electric vehicle is not provided with an engine, waste heat generated in the operation process of the engine cannot be used as a heat source of an air conditioner like a traditional fuel vehicle, and the existing electric vehicle mostly adopts a PTC heating mode to heat in winter, so that the load of a vehicle-mounted battery is greatly increased, and the endurance mileage of the pure electric vehicle is seriously reduced. Meanwhile, most new energy automobiles use lithium batteries as energy sources, and in cold winter, particularly in northern areas, the new energy automobiles have a cold start phenomenon, namely, a phenomenon that a storage battery discharges large current in a short time in a low-temperature environment, and the service life of the storage battery can be seriously shortened by cold start.
Therefore, it is an urgent technical problem to provide a method for preheating a battery efficiently to minimize the adverse effect of cold start and to effectively utilize the waste heat generated during the operation of the battery.
SUMMERY OF THE UTILITY MODEL
In order to solve the above technical problem, the embodiments of the present specification are implemented as follows: the utility model provides a new energy automobile's battery preheats and waste heat utilization system, include:
a battery bin and a heat exchange box body;
the upper surface of the battery compartment is fixedly connected with a first heating plate, and the lower surface of the battery compartment is fixedly connected with a second heating plate;
one end of the first heating plate is fixedly connected with a first pole part for electrifying and heating the first heating plate;
one end of the second heating plate is fixedly connected with a second pole part for electrifying and heating the second heating plate;
one side of the first heating plate, which is far away from the battery bin, is fixedly connected with a first heat dissipation plate;
one side of the second heating plate, which is far away from the battery bin, is fixedly connected with a second heat dissipation plate;
the heat exchange medium inlets of the first heat dissipation plate and the second heat dissipation plate are connected with a first electric water pump through pipelines;
the heat exchange medium outlets of the first heat dissipation plate and the second heat dissipation plate are connected with a second electric water pump through pipelines;
the heat exchange box body is provided with a first heat exchange pipeline; a part of the first heat exchange pipe is positioned in the inner space of the heat exchange box body, and a part of the first heat exchange pipe is positioned in the outer space of the heat exchange box body;
the first heat exchange pipeline positioned in the outer space of the heat exchange box body is connected with an outlet of the box body, and the box body is used for accommodating a heat exchange medium; the inlet of the box body is connected with the second electric water pump through a pipeline, and a flow regulating valve is connected between the second electric water pump and the box body;
the heat exchange box body is provided with a second heat exchange pipeline, one part of the second heat exchange pipeline is positioned in the inner space of the heat exchange box body, and one part of the second heat exchange pipeline is positioned in the outer space of the heat exchange box body;
the second heat exchange pipeline positioned in the external space of the heat exchange box body is sequentially connected with a third electric water pump and a waste heat discharge radiator through pipelines;
and the heat storage phase-change material is filled in the internal space of the heat exchange box body.
Preferably, the heat-storage phase-change material is a mixture prepared by mixing paraffin, graphite and activated carbon.
Preferably, the shell of the heat exchange box body is filled with a heat insulation material, and the heat insulation material is inorganic fiber.
Preferably, the first heat dissipation plate comprises a first main body structure, a first cover body structure and a second cover body structure; one end of the first main body structure is provided with a first groove, and the other end of the first main body structure is provided with a second groove; the first cover body structure is arranged at one end of the first main body structure and forms a first heat exchange medium inflow cavity together with the first groove; the second cover body structure is arranged at the other end of the first main body structure and forms a first heat exchange medium outflow cavity together with the second groove;
the first cover body structure is provided with a first water inlet, and the second cover body structure is provided with a first water outlet;
the solid part between the first groove and the second groove is provided with a plurality of first through holes which are used as channels for circulating heat exchange media.
Preferably, the first plurality of through holes include a first through hole and a second through hole, the distance between the first through hole and the middle position of the first plurality of through holes is a first distance, the distance between the second through hole and the middle position of the first plurality of through holes is a second distance, the first distance is greater than the second distance, and the cross-sectional area of the first through hole is greater than the cross-sectional area of the second through hole.
Preferably, the first heat dissipation plate includes a second main body structure, a third cover structure and a fourth cover structure; one end of the second main body structure is provided with a third groove, and the other end of the second main body structure is provided with a fourth groove; the third cover body structure is arranged at one end of the second main body structure and forms a second heat exchange medium inflow cavity together with the third groove; the second cover body structure is arranged at the other end of the first main body structure and forms a second heat exchange medium outflow cavity together with the fourth groove;
a second water inlet is formed in the third cover body structure, and a second water outlet is formed in the fourth cover body structure;
and the solid part between the third groove and the fourth groove is provided with a plurality of second through holes which are used as channels for circulating the heat exchange medium.
Preferably, the second plurality of through holes include a third through hole and a fourth through hole, a distance between the third through hole and the middle position of the second plurality of through holes is a third distance, a distance between the third through hole and the middle position of the second plurality of through holes is a fourth distance, the third distance is greater than the fourth distance, and a cross-sectional area of the third through hole is greater than a cross-sectional area of the fourth through hole.
Preferably, the first plurality of through holes and the second plurality of through holes are all provided with turbulence fins.
Preferably, a fan is disposed near the waste heat discharging radiator.
Preferably, the fan is an axial flow fan.
One embodiment of the present description achieves the following advantageous effects: the utility model discloses from the angle of system's thinking, the design demand of the subsystem of these two irrelevant electric automobile originally of heating demand in the heat dissipation demand of electric automobile's the battery compartment and the car winter is in the same place organically, through set up the heat sink on the battery compartment surface, on the one hand can be effectively with the vehicle-mounted battery in the battery compartment derive the heat that emits when the chemical energy turns into the electric energy, avoid the heat to accumulate on the battery compartment surface and then influence the vehicle-mounted battery performance, on the other hand is the heat source of heating in the car winter with the heat of deriving effectively, thereby adopt vehicle-mounted battery to heat the resistance wire and then compare with traditional electric automobile, the continuation of the journey mileage that can effectively prolong electric automobile, user experience is good, and the system is suitable for being generalized. Simultaneously, preheating devices are arranged on two sides of the battery compartment, so that the storage battery in the battery compartment can be preheated in winter, and the problem of performance reduction caused by cold start of the storage battery is effectively solved.
Drawings
In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without any creative effort.
Fig. 1 is a schematic view of connection relationships among components of a battery preheating and waste heat utilization system of a new energy automobile according to the present invention;
fig. 2 is a schematic diagram of a stacking relationship among a battery compartment, a first heating plate, a second heating plate, a first heat dissipation plate and a second heat dissipation plate, which are represented in an exploded view form in the system for preheating a battery and utilizing waste heat of a new energy vehicle according to the present invention;
fig. 3 is an exploded view of a heat dissipation plate in the battery preheating and waste heat utilization system of the new energy automobile provided by the present invention;
fig. 4 is a schematic view of another angle of the cover structure in the system for preheating the battery and utilizing the waste heat of the new energy vehicle according to the present invention.
Detailed Description
To make the objects, technical solutions and advantages of one or more embodiments of the present disclosure more apparent, the technical solutions of one or more embodiments of the present disclosure will be described in detail and completely with reference to the specific embodiments of the present disclosure and the accompanying drawings. It is to be understood that the embodiments described are only a few embodiments of the present specification, and not all embodiments. All other embodiments that can be derived by a person skilled in the art from the embodiments given herein without making any creative effort fall within the scope of protection of one or more embodiments of the present specification.
In the driving process of the electric automobile, the chemical energy of the vehicle-mounted battery is converted into electric energy, and then the motor of the electric automobile is driven to operate, so that the electric automobile is driven to run, the vehicle-mounted battery can release a large amount of heat in the process of converting the chemical energy into the electric energy, heat dissipation is needed, otherwise, heat accumulation can lead to the reduction of the service performance and the service life of the vehicle-mounted battery, meanwhile, the pure electric automobile does not have an engine, the waste heat generated in the operation process of the engine can not be used as a heat source of an air conditioner like a traditional fuel automobile, in winter, the existing electric automobile mostly adopts a PTC heating mode for heating, however, the load of the vehicle-mounted battery can be greatly increased, and the endurance mileage of the pure electric automobile is seriously reduced. Meanwhile, in cold winter, especially in northern areas, the new energy automobile has a cold start phenomenon, namely, a phenomenon that a storage battery discharges with large current in a short time under a low-temperature environment, and the service life of the storage battery can be seriously shortened by the cold start. The utility model provides an electric automobile electric storehouse cooling wind-heating conversion system can effectively conduct away the heat that the battery compartment surface gathered and use hot-blastly as the heating in the car to compare with the traditional mode that adopts PTC heating, can prolong electric automobile's continuation of the journey mileage effectively, user experience is good.
The utility model provides a battery of new energy automobile preheats and waste heat utilization system, as shown in fig. 1, 1 is electric automobile's battery compartment, 14 is the heat transfer box, is connected with first hot plate 2 at the upper surface of battery compartment 1 fixedly, is connected with second hot plate 4 at the lower surface of battery compartment 1 fixedly, and the one end fixedly connected with of first hot plate 2 is used for the first utmost point post part 3 of ohmic heating for first hot plate 2, wherein as shown in fig. 2, first utmost point post part 3 includes first positive post 301 and first negative pole post 302; one end of the second heating plate 4 is fixedly connected with a second pole part 5 for electrifying and heating the second heating plate 4, wherein the second pole part 5 comprises a second positive pole 501 and a second negative pole 502. One side of the first heating plate 2, which is far away from the battery bin 1, is fixedly connected with a first heat dissipation plate 17; one side of the second heating plate 4 departing from the battery compartment 1 is fixedly connected with a second heat radiation plate 6. The heat exchange medium inlets of the first heat dissipation plate 17 and the second heat dissipation plate 6 are connected with the first electric water pump 7 through pipelines, and the heat exchange medium outlets of the first heat dissipation plate 17 and the second heat dissipation plate 6 are connected with the second electric water pump 8 through pipelines.
The heat exchange box body 14 is provided with a first heat exchange pipe 11, a part of the first heat exchange pipe 11 is located in the inner space of the heat exchange box body 14, as shown in fig. 1, 13 denotes that the part of the first heat exchange pipe 11 is located in the inner space of the heat exchange box body 14, another part of the first heat exchange pipe 11 is located in the outer space of the heat exchange box body 14, the first heat exchange pipe 11 located in the outer space of the heat exchange box body 14 is connected with the outlet of the box body 10, and the box body 10 is used for accommodating a heat exchange medium; an inlet of the box body 10 is connected with a second electric water pump 8 through a pipeline, and a flow regulating valve 9 is connected between the second electric water pump 8 and the box body 10.
The heat exchange box body 14 is provided with a second heat exchange pipe 18, a part of the second heat exchange pipe 18 is positioned in the inner space of the heat exchange box body 14, as shown in fig. 1, 16 indicates that the part of the second heat exchange pipe 18 is positioned in the inner space of the heat exchange box body 14, and another part of the second heat exchange pipe 18 is positioned in the outer space of the heat exchange box body 14.
The second heat exchange pipe 18 located in the outer space of the heat exchange tank body 14 is sequentially connected with a third electric water pump 27 and a waste heat discharging radiator 20 through pipes. The heat exchange case 14 is filled with a heat storage phase change material 12 in an inner space thereof.
As shown in fig. 2, fig. 2 is a schematic diagram of a stacking relationship among the battery compartment 1, the first heating plate 2, the second heating plate 4, the first heat dissipation plate 17, and the second heat dissipation plate 6, which are shown in an exploded view form in the system for preheating the battery and utilizing the waste heat of the new energy vehicle according to the present invention. Reference numeral 21 denotes an inlet of the heat exchange medium of the first heat sink 17, and 22 denotes an outlet of the heat exchange medium of the first heat sink 17. Reference numeral 24 denotes an inlet of the heat exchange medium of the second heat sink 6, and 23 denotes an outlet of the heat exchange medium of the second heat sink 6. The main structure of the first heat sink 17 and the second heat sink 6 is the same, and therefore, as shown in fig. 3, only the first heat sink 17 will be described as an example.
As shown in fig. 3, the heat dissipation plate in this embodiment is a rectangular parallelepiped metal plate-shaped structure, and the rectangular parallelepiped metal plate-shaped structure includes a main body structure, a first cover structure 22, and a second cover structure (the second cover structure is the same as the first cover structure 22, and therefore, the second cover structure is not illustrated in fig. 3). One end of the body structure is machined with a first groove 25 and the other end of the body structure is machined with a second groove (not shown in fig. 3). The first cover structure 22 is fixedly connected with the end of the main structure provided with the first groove 25 to form a heat exchange medium inflow cavity, and the second cover structure is fixedly connected with the end of the main structure provided with the second groove to form a heat exchange medium outflow cavity. The main structure of the rectangular metal plate-shaped structure is made by casting metal with good heat conductivity as a raw material, one end of the rectangular metal plate-shaped structure is provided with a first groove 25, the other end of the rectangular metal plate-shaped structure is provided with a second groove, and the two sections of groove structures have the same form. Taking the first groove 25 as an example for explanation, a plurality of screw holes 24 are formed on the four outer surfaces of the first groove by drilling and then tapping, a first cover structure 22 is arranged on one side of the first groove 25, and a second cover structure is arranged on one side of the second groove. The first cover body structure 22 and the second cover body structure are both manufactured by adopting a casting machining process, a plurality of screw holes 23 are formed in the outer surface of the first cover body structure 22 in a mode of drilling and tapping firstly, the size of the screw holes corresponds to the position of a plurality of screw holes machined in the outer surface of the first groove 25, the screw holes are equal in size, the spiral directions of spiral lines in the screw holes are consistent, the first cover body structure 22 and the first groove 25 can be aligned firstly through the screw holes in the first cover body structure 22 and the first groove 25, the first cover body structure 22 and the first groove 25 are fastened together in a screw fastening mode, a water inlet 21 is formed in the first cover body structure 22, and a heat exchange medium can flow into the groove structure 26 in the first cover body structure 22 through the water inlet 21 and then further flow into the first groove 25.
The solid part between the first groove 25 and the second groove of the main body structure is processed with a plurality of through holes, the through holes are used as channels for circulating the heat exchange medium, in the embodiment, the cross sectional areas of the through holes at different positions are pertinently designed, and therefore the flow of the heat exchange medium passing through the through holes at different positions is pertinently controlled. In the electric vehicle battery compartment cooling and air heating conversion system of the embodiment, the central through hole at the middle position is taken as a reference, and the cross-sectional area of the through hole is larger along with the distance from the central through hole; meanwhile, taking the central through hole as a symmetrical reference, the cross-sectional area of the nth through hole on the left of the central through hole and the cross-sectional area of the nth through hole on the right of the central through hole should be the same as much as possible, and the machining precision during specific machining should ensure that the ratio of the absolute value of the difference between the areas of the two to the cross-sectional area of the nth through hole on the left of the central through hole is not more than 5%. With this arrangement, the cross-sectional area of the through-hole distant from the central through-hole becomes larger, and the cross-sectional areas of the two through-holes that are bilaterally symmetrical with respect to the central through-hole are substantially equivalent. The arrangement is that after a great deal of experiments, the inventor analyzes the velocity field of the fluid flowing into the cavity of the heat exchange medium, and finds that when the heat exchange medium is introduced through the water inlet 21 arranged on the first cover structure 22, the flow velocity of the heat exchange medium flowing into different positions in the cavity of the heat exchange medium is different, the flow velocity of the heat exchange medium is higher when the heat exchange medium is closer to the middle position, and the flow velocity of the heat exchange medium is higher when the heat exchange medium is farther from the middle position when the heat exchange medium is closer to the middle position, because of the resistance effect, the flow velocity of the heat exchange medium is lower, if the cross-sectional areas of the through holes at different positions are the same, the flow of the heat exchange medium in a part of the through holes near the central through hole is higher, and the flow of the heat exchange medium in a part of the through holes far from the central through hole is lower, so that the convective heat exchange strength at the middle position of the battery compartment is obviously higher than the heat exchange strengths at two ends, thereby causing the temperatures of the vehicle-mounted batteries 1 at different positions in the battery compartment to be obviously different, and further, the service performance of the battery cells at different positions in the battery compartment 1 is reduced due to the obvious inconsistency of the temperatures of the battery cells, so that the service life of the battery cells is influenced. And the utility model discloses among the technical scheme, the cross-sectional area through the through-hole to different positions carries out the design of pertinence, can guarantee as far as possible that the flow of the heat transfer medium of the through-hole of different positions is roughly the same, and then guarantees that the temperature of the battery pack of the different positions of on-vehicle battery in the battery compartment 1 is the same as far as possible to make the battery pack of the different positions of on-vehicle battery in the battery compartment 1 turn into the electric energy with chemical energy steadily, its performance is good, life is longer.
In a further optimized scheme, the heat storage phase-change material is a mixture prepared by mixing paraffin, graphite and activated carbon.
According to a further optimized scheme, the shell of the heat exchange box body is filled with a heat insulation material 15, and the heat insulation material 15 is inorganic fiber.
In a further preferred embodiment, the first heat dissipation plate includes a first main structure, a first cover structure, and a second cover structure; one end of the first main body structure is provided with a first groove, and the other end of the first main body structure is provided with a second groove; the first cover body structure is arranged at one end of the first main body structure and forms a first heat exchange medium inflow cavity together with the first groove; the second cover body structure is arranged at the other end of the first main body structure and forms a first heat exchange medium outflow cavity together with the second groove;
the first cover body structure is provided with a first water inlet, and the second cover body structure is provided with a first water outlet;
the solid part between the first groove and the second groove is provided with a plurality of first through holes which are used as channels for circulating heat exchange media.
In a further preferred embodiment, the first plurality of through holes include a first through hole and a second through hole, the first through hole is a first distance from the middle position of the first plurality of through holes, the second through hole is a second distance from the middle position of the first plurality of through holes, the first distance is greater than the second distance, and the cross-sectional area of the first through hole is greater than the cross-sectional area of the second through hole.
In a further preferred embodiment, the first heat dissipation plate includes a second main structure, a third cover structure and a fourth cover structure; one end of the second main body structure is provided with a third groove, and the other end of the second main body structure is provided with a fourth groove; the third cover body structure is arranged at one end of the second main body structure and forms a second heat exchange medium inflow cavity together with the third groove; the second cover body structure is arranged at the other end of the first main body structure and forms a second heat exchange medium outflow cavity together with the fourth groove;
a second water inlet is formed in the third cover body structure, and a second water outlet is formed in the fourth cover body structure;
and the solid part between the third groove and the fourth groove is provided with a plurality of second through holes which are used as channels for circulating the heat exchange medium.
According to a further optimized scheme, the second plurality of through holes comprise a third through hole and a fourth through hole, the distance between the third through hole and the middle position of the second plurality of through holes is a third distance, the distance between the third through hole and the middle position of the second plurality of through holes is a fourth distance, the third distance is greater than the fourth distance, and the cross sectional area of the third through hole is greater than the cross sectional area of the fourth through hole.
Preferably, the first plurality of through holes and the second plurality of through holes are all provided with turbulence fins.
In a further optimized scheme, a fan 19 is arranged near the waste heat discharging radiator.
Preferably, the fan is an axial flow fan.
The utility model discloses a theory of operation: under the cold weather in winter, if the temperature of battery compartment 1 is very low, if the performance of the battery in battery compartment 1 can be harmed in the cold start this moment, then preheat battery compartment 1 through first utmost point post part 3 and first utmost point post part 5 through the battery of placing in advance in the car this moment, until the temperature of battery compartment 1 reaches predetermined temperature, start the on-vehicle battery in the battery compartment this moment and can not produce the cold start phenomenon, then disconnect battery and first utmost point post part 3 and the connection of first utmost point post part 5.
In the driving process of a vehicle, a large amount of heat can be generated by a vehicle-mounted battery in the battery compartment 1, the temperature of the vehicle-mounted battery in the battery compartment 1 needs to be reduced at the moment, and meanwhile, the space in the vehicle needs to be heated in winter to be warmed. The first heat sink 17 is taken as an example to explain the process, and the second heat sink 6 operates similarly.
When the first electric water pump 7 works, the heat exchange medium flows to the inflow port 21 of the heat exchange medium of the first heat dissipation plate 17 through the pipeline, flows into the heat exchange medium of the first electric water pump 7, a part of the heat exchange medium flows to the first heat dissipation plate 17 through the pipeline, the rest flows to the second heat dissipation plate 6, the heat exchange medium flows in the through holes in the first heat dissipation plate 17 and the second heat dissipation plate 6 respectively (the first heat dissipation plate 17 and the second heat dissipation plate 6 have the same structural form, the heat exchange medium enters the heat exchange medium inflow cavity through the water inlet 21 arranged on the first cover body structure 22 and then is further divided, flows to the through holes at different positions of the first groove 25, further converges at the second groove, and flows out of the cooling device through the water outlet on the second cover body structure), so that the heat conduction function of the heat exchange surfaces which are respectively contacted with the battery compartment 1 through the first heat dissipation plate 17 and the second heat dissipation plate 6, and the heat accumulated on the surface of the battery compartment 1 is guided out through the heat exchange function of convection heat exchange, the heat exchange medium flowing out of the first heat dissipation plate 17 and the second heat dissipation plate 6 flows into the second three-way valve 9 and then converges, flows out of the flow control valve 9 and then flows into the box body 10 through a pipeline, and further flows into the heat exchange box body 14 through the box body 10. In the heat exchange box body 14, a heat exchange medium flowing in the second heat exchange pipeline 18 is heated, and then air in the vehicle is heated through the fan 19 at the waste heat discharge radiator 20, so that the purpose of heating the air in the vehicle while cooling the battery compartment 1 is achieved through the circulating flow of the heat exchange medium, and the requirement of heating the space in the vehicle in winter is met.
The utility model discloses from the angle of system's thinking, the design demand of the originally irrelevant subsystem of these two electric automobile of heating demand in the heat dissipation demand of electric automobile's battery compartment and the car winter is in the same place organically, through set up the heat sink on the battery compartment surface, on the one hand can be effectively derive the heat that the on-vehicle battery in the battery compartment discharged when the chemical energy turns into the electric energy, avoid the heat to accumulate on the battery compartment surface and then influence on-vehicle battery performance, on the other hand is as the heat source of heating in the car winter with the heat of deriving effectively, thereby adopt on-vehicle battery to heat the resistance wire and then the mode of heating to compare with traditional electric automobile, the continuation of the journey mileage that can effectively prolong electric automobile, user experience is good. And simultaneously, the utility model discloses set up the hot plate that can preheat the battery compartment in the battery compartment both sides, cold weather in winter, especially winter in the north, start at new forms of energy electric automobile and preheat the battery compartment through the hot plate, the harm that cold start caused the battery performance when can effectively solving battery start, suitable popularization.
While certain embodiments of the present disclosure have been described above, other embodiments are within the scope of the following claims. In some cases, the actions or steps recited in the claims may be performed in a different order than in the embodiments and still achieve desirable results. In addition, the processes depicted in the accompanying figures do not necessarily have to be in the particular order shown or in sequential order to achieve desirable results. The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments.
It should also be noted that 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 like elements in a process, method, article, or apparatus that comprises the element.
The above description is only an example of the present specification, and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (8)
1. The utility model provides a battery of new energy automobile preheats and waste heat utilization system which characterized in that includes:
a battery bin (1) and a heat exchange box body (14);
the upper surface of the battery compartment (1) is fixedly connected with a first heating plate (2), and the lower surface of the battery compartment (1) is fixedly connected with a second heating plate (4);
one end of the first heating plate (2) is fixedly connected with a first pole part (3) for electrifying and heating the first heating plate (2);
one end of the second heating plate (4) is fixedly connected with a second pole part (5) for electrifying and heating the second heating plate (4);
one side of the first heating plate (2) departing from the battery compartment (1) is fixedly connected with a first heat dissipation plate (17);
one side of the second heating plate (4) departing from the battery compartment (1) is fixedly connected with a second heat dissipation plate (6);
the heat exchange medium inlets of the first heat dissipation plate (17) and the second heat dissipation plate (6) are connected with a first electric water pump (7) through pipelines;
the heat exchange medium outlets of the first heat dissipation plate (17) and the second heat dissipation plate (6) are connected with a second electric water pump (8) through pipelines;
the heat exchange box body (14) is provided with a first heat exchange pipeline (11); a part of the first heat exchange pipe (11) is positioned in the inner space of the heat exchange box body (14), and a part of the first heat exchange pipe (11) is positioned in the outer space of the heat exchange box body (14);
the first heat exchange pipe (11) positioned in the outer space of the heat exchange box body (14) is connected with an outlet of the box body (10), and the box body (10) is used for containing a heat exchange medium; an inlet of the box body (10) is connected with the second electric water pump (8) through a pipeline, and a flow regulating valve (9) is connected between the second electric water pump (8) and the box body (10);
the heat exchange box body (14) is provided with a second heat exchange pipe (18), one part of the second heat exchange pipe (18) is positioned in the inner space of the heat exchange box body (14), and one part of the second heat exchange pipe (18) is positioned in the outer space of the heat exchange box body (14);
the second heat exchange pipeline (18) positioned in the external space of the heat exchange box body (14) is sequentially connected with a third electric water pump (27) and a waste heat discharging radiator (20) through pipelines;
the heat storage phase change material (12) is filled in the internal space of the heat exchange box body (14).
2. The system for preheating the battery and utilizing the waste heat of the new energy automobile according to claim 1, wherein the shell of the heat exchange box body (14) is filled with a heat insulation material (15), and the heat insulation material is inorganic fiber.
3. The system for preheating the battery and utilizing the waste heat of the new energy automobile according to claim 1, wherein the first heat dissipation plate (17) comprises a first main body structure, a first cover structure and a second cover structure; one end of the first main body structure is provided with a first groove, and the other end of the first main body structure is provided with a second groove; the first cover body structure is arranged at one end of the first main body structure and forms a first heat exchange medium inflow cavity together with the first groove; the second cover body structure is arranged at the other end of the first main body structure and forms a first heat exchange medium outflow cavity together with the second groove;
the first cover body structure is provided with a first water inlet, and the second cover body structure is provided with a first water outlet;
the solid part between the first groove and the second groove is provided with a plurality of first through holes which are used as channels for circulating heat exchange media.
4. The system according to claim 3, wherein the first plurality of through holes include a first through hole and a second through hole, the first through hole is spaced apart from the middle of the first plurality of through holes by a first distance, the second through hole is spaced apart from the middle of the first plurality of through holes by a second distance, the first distance is greater than the second distance, and the cross-sectional area of the first through hole is greater than the cross-sectional area of the second through hole.
5. The system for preheating the battery and utilizing the waste heat of the new energy automobile according to claim 3, wherein the second heat dissipation plate (6) comprises a second main body structure, a third cover structure and a fourth cover structure; one end of the second main body structure is provided with a third groove, and the other end of the second main body structure is provided with a fourth groove; the third cover body structure is arranged at one end of the second main body structure and forms a second heat exchange medium inflow cavity together with the third groove; the second cover body structure is arranged at the other end of the first main body structure and forms a second heat exchange medium outflow cavity together with the fourth groove;
a second water inlet is formed in the third cover body structure, and a second water outlet is formed in the fourth cover body structure;
and the solid part between the third groove and the fourth groove is provided with a plurality of second through holes which are used as channels for circulating the heat exchange medium.
6. The system for preheating batteries and utilizing waste heat of a new energy automobile according to claim 5, wherein the second plurality of through holes comprises a third through hole and a fourth through hole, the third through hole is spaced from the middle position of the second plurality of through holes by a third distance, the third through hole is spaced from the middle position of the second plurality of through holes by a fourth distance, the third distance is greater than the fourth distance, and the cross-sectional area of the third through hole is greater than the cross-sectional area of the fourth through hole.
7. The system for preheating the battery and utilizing the waste heat of the new energy automobile according to claim 1, wherein a fan (19) is disposed near the waste heat discharging radiator (20).
8. The system for preheating the battery and utilizing the waste heat of the new energy automobile according to claim 7, wherein the fan (19) is an axial flow fan.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120353272.5U CN214542347U (en) | 2021-02-04 | 2021-02-04 | Battery preheating and waste heat utilization system of new energy automobile |
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| CN202120353272.5U CN214542347U (en) | 2021-02-04 | 2021-02-04 | Battery preheating and waste heat utilization system of new energy automobile |
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| CN214542347U true CN214542347U (en) | 2021-10-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024037147A1 (en) * | 2022-08-17 | 2024-02-22 | 中国第一汽车股份有限公司 | Battery thermal management system, battery pack, vehicle, and battery pack design method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024037147A1 (en) * | 2022-08-17 | 2024-02-22 | 中国第一汽车股份有限公司 | Battery thermal management system, battery pack, vehicle, and battery pack design method |
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