Thermal management system and heating pump thereof

Abstract

The embodiment of the utility model provides a heat management system and a heating pump thereof. The heating pump comprises an impeller; the motor is in transmission connection with the impeller and used for driving the impeller to pump out liquid; the motor comprises a motor shell; the pump shell comprises a side shell arranged around the motor shell; a heating cavity is formed between the side shell and the motor shell; the heater comprises a heating piece which is arranged in the heating cavity and surrounds the motor; the heating part divides the heating cavity into a first channel and a second channel, the first channel is located on the side, close to the motor, of the heating part, and the second channel is located on the side, away from the motor, of the heating part. The two opposite ends of the heating cavity are provided with a heating cavity inlet and a heating cavity outlet respectively, so that liquid pumped out by the impeller can be shunted to the first channel and the second channel after passing through the heating cavity inlet, and the liquid flowing through the first channel and the second channel can be converged at the heating cavity outlet. Therefore, the heat transfer efficiency is improved, and the heating efficiency of the battery is further improved.

Description

Technical Field

[0001] The embodiments in this specification relate to the field of transportation, and specifically to a thermal management system and a heat pump thereof. Background Art

[0002] In cold environments, thermal management systems in vehicles such as electric vehicles usually heat the liquid through a heat pump to increase the battery temperature to ensure the electrical performance of the battery. Generally, a cylindrical cavity is formed between the motor and the housing of the heat pump, and a heating component is provided in the cylindrical cavity, which is sleeved on the motor. A channel is formed between the heating component and the motor for the liquid to flow through. After the liquid is heated in the channel, it flows to the battery and increases the battery temperature by heat transfer.

[0003] However, conventional heat pumps have low heating efficiency and can only improve the electrical performance of the battery to a low degree. Summary of the invention

[0004] Various embodiments of the present specification provide a thermal management system and a heat pump thereof that can improve the heating efficiency of a battery.

[0005] One embodiment of the present specification provides a heating pump, the heating pump comprising:

[0006] impeller;

[0007] A motor, the motor is drivingly connected to the impeller and is used to drive the impeller to pump out liquid; the motor includes a motor housing;

[0008] The pump housing comprises a side housing arranged around the motor housing; a heating chamber is formed between the side housing and the motor housing;

[0009] A heater, the heater comprising a heating element disposed in the heating chamber and surrounding the motor;

[0010] The heating element divides the heating chamber into a first channel and a second channel, wherein the first channel is located at a side of the heating element close to the motor, and the second channel is located at a side of the heating element away from the motor;

[0011] The heating chamber has a heating chamber inlet and a heating chamber outlet at opposite ends, respectively, so that the liquid pumped out by the impeller can be divided into the first channel and the second channel after passing through the heating chamber inlet, and the liquid flowing through the first channel and the second channel can converge at the heating chamber outlet.

[0012] Optionally, the pump housing further comprises a lower cover, and the lower cover is located at one end of the heating chamber outlet of the heating chamber;

[0013] The lower cover has a converging surface exposed to the heating chamber, and a gap is formed between the heating element and the converging surface.

[0014] Optionally, a plurality of support members are provided on the converging surface, and the plurality of support members are arranged at intervals along the circumference of the heating element, and the heating element is fixedly connected to the lower cover via the support members.

[0015] Optionally, the support member is provided with a slot matching the heat generating element, and the depth of the slot is smaller than the height of the support member.

[0016] Optionally, the pump housing further comprises a lower cover; the lower cover is located at one end of the outlet of the heating chamber;

[0017] The lower cover has a converging surface exposed to the heating chamber; a first flow guiding structure is arranged on the converging surface of the heating chamber to guide the liquid flowing out of the first channel and the second channel to flow to the outlet of the heating chamber.

[0018] Optionally, a first stopper is further provided on the converging surface; the first stopper is located at the starting end of the first flow guiding structure.

[0019] Optionally, the first flow guiding structure comprises a flow guiding groove provided on the converging surface; and the depth of the flow guiding groove gradually increases from the starting end to the end end;

[0020] The first guide structure also includes a second stopper arranged on the confluence surface and located at the end of the guide groove; the second stopper has a guide block surface tangent to the end of the inner side surface of the guide groove, and the height of the guide block surface is greater than the height of the inner side wall of the guide groove.

[0021] Optionally, the pump housing further comprises an upper cover; the upper cover is located at one end of the heating chamber inlet of the heating chamber;

[0022] The heating element is in contact with the upper cover.

[0023] Optionally, the upper cover is covered on the motor housing, and the end of the motor housing close to the impeller and / or the end of the upper cover close to the impeller are provided with a second guide structure, and the second guide structure is used to guide the liquid pumped out by the impeller to flow to the heating chamber inlet.

[0024] Optionally, the second flow guiding structure is a flow guiding pipe; and the cross-sectional area of ​​the second flow guiding structure gradually increases from the starting end to the end.

[0025] Optionally, the second flow guiding structure is surrounded by the upper cover and the motor housing.

[0026] Optionally, a third flow guiding structure is provided on the inner side of the heating element; the third flow guiding structure is substantially spiral, extending from one end of the heating element close to the inlet of the heating chamber to one end of the heating element close to the outlet of the heating chamber;

[0027] And / or, a fourth flow guide structure is provided on the outer surface of the heating element; the fourth flow guide structure is substantially spiral, extending from one end of the heating element close to the inlet of the heating chamber to one end of the heating element close to the outlet of the heating chamber;

[0028] And / or, a fifth flow guide structure is provided on the inner side surface of the side shell; the fifth flow guide structure is substantially spiral, extending from one end of the side shell close to the inlet of the heating chamber to one end of the side shell close to the outlet of the heating chamber;

[0029] And / or, a sixth flow guide structure is provided on the outer surface of the motor housing; the sixth flow guide structure is roughly spiral, extending from one end of the motor housing close to the inlet of the heating chamber to one end of the motor housing close to the outlet of the heating chamber.

[0030] One embodiment of the present specification also provides a thermal management system, including the heat pump provided in the present application.

[0031] In multiple embodiments provided in this specification, the liquid pumped out by the impeller can be diverted to the first channel and the second channel after passing through the inlet of the heating chamber, and the liquid flowing through the first channel and the second channel can converge at the outlet of the heating chamber. After the liquid pumped out by the impeller is diverted, it passes through the first channel and the second channel and flows to the outlet of the heating chamber. The setting of the first channel and the second channel allows heat transfer to be carried out on both the inner and outer surfaces of the heating element, increasing the thermal contact area between the heating element and the liquid, thereby improving the efficiency of heat transfer, and further improving the heating efficiency of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A schematic diagram of the exploded structure of a heating pump provided for one embodiment of the present specification.

[0033] Figure 2 for Figure 1 A cross-sectional view of the heat pump is shown.

[0034] Figure 3 for Figure 1 A cross-sectional view of another section of the heat pump is shown.

[0035] Figure 4 for Figure 1 Schematic diagram of the structure of the middle and lower cover.

[0036] Figure 5 for Figure 4A schematic structural diagram of the lower cover from another viewing angle is shown.

[0037] Figure 6 for Figure 1 Schematic diagram of the structure of the middle upper cover.

[0038] Description of Reference Numerals

[0039] 100, heating pump; 110, impeller; 111, pump outlet; 120, motor; 121, motor housing; 1211, annular cavity; 1212, inner surrounding area; 122, stator; 123, rotor; 130, pump housing; 131, side housing; 133, lower cover; 1331, confluence surface; 1332, support member; 1333, slot; 1334, first flow guide structure; 1334a, starting end; 1334b, end; 1335, flow guide groove; 1336, first stopper; 1337, second stopper; 1338, flow guide baffle; 135, upper cover; 1351, second flow guide structure; 1351a, starting end; 1351b, end; 1352, first half flow guide structure; 1353, second half flow guide structure; 140, heater; 141, heating element; 01, heating chamber; 011, first channel; 012, second channel; 013, heating chamber inlet; 014, heating chamber outlet; 02, gap. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of this specification to clearly and completely describe the technical solutions in the embodiments of this specification. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments of this specification, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of this application.

[0041] In the embodiments of the present application, the drawings are not necessarily drawn to scale, and local features may be enlarged or reduced to more clearly show the details of the local features.

[0042] Unless otherwise specified, all technical and scientific terms used in the embodiments of this specification have the same meaning as those generally understood by those skilled in the art of the technical field of this specification. The terms used in this specification are only for the purpose of describing specific embodiments and are not intended to limit the scope of this specification. The term "and / or" used in this specification includes any and all combinations of one or more related listed items. The singular forms of "a", "above", and "the" used in the embodiments of this specification and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings.

[0043] In the description of the embodiments of this specification, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of this specification, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0044] In the description of the implementation methods of this specification, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "height", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. to indicate the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of simplified description of the implementation methods of this specification, and do not indicate that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and should not be understood as a limitation on the present application.

[0045] In the embodiments of this specification, unless otherwise clearly defined, the terms "install", "connect", "connect", "fix", "set", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0046] In the embodiments of the present specification, unless otherwise clearly defined, a first feature being "on", "above", "above", "below", "below", "below", or "below" a second feature may mean that the first feature is in direct contact with the second feature, or the first feature and the second feature are in indirect contact through an intermediate medium. Moreover, a first feature being "on", "above", or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than the horizontal height of the second feature. A first feature being "below", "below", or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the horizontal height of the first feature is less than the horizontal height of the second feature.

[0047] Affected by the cold environment, the electrical performance of the battery is seriously reduced, which in turn affects the endurance of electric vehicles and other vehicles. In order to improve the endurance of electric vehicles and other vehicles in cold environments, a heating pump is usually used to heat the liquid, and the heated liquid is used to increase the temperature of the battery, thereby improving the electrical performance of the battery in the cold environment and improving the endurance of electric vehicles and other vehicles in the cold environment.

[0048] However, the inventors found that in conventional heat pumps, only the inner side of the heating element is in thermal contact with the liquid, and the thermal contact area is small. When the heating element heats up, the temperature of the outer side of the heating element also rises at the same time, but the heat outside the heating element is not utilized.

[0049] Based on this, the inventor provides a heat pump that simultaneously makes the outer side of the heating element contact with the liquid, thereby increasing the total thermal contact area between the heating element and the liquid, thereby improving the efficiency of heat transfer and further improving the heating efficiency of the battery.

[0050] Based on this, the inventor proposes a heating pump that can shorten the heating channel.

[0051] See also Figures 1 to 6 A heating pump 100 provided in one embodiment of the present application includes an impeller 110, a motor 120, a pump housing 130 and a heater 140. The motor 120 is in transmission connection with the impeller 110, and is used to drive the impeller 110 to pump out liquid. The motor 120 includes a motor housing 121. The pump housing 130 includes a side housing 131 arranged around the motor housing 121. A heating chamber 01 is formed between the side housing 131 and the motor housing 121. The heater 140 includes a heating element 141 arranged in the heating chamber 01 and around the motor 120. The heating element 141 separates the heating chamber 01 into a first channel 011 and a second channel 012, wherein the first channel 011 is located on a side of the heating element 141 close to the motor 120, and the second channel 012 is located on a side of the heating element 141 away from the motor 120; the heating chamber 01 has a heating chamber inlet 013 and a heating chamber outlet 014 at opposite ends thereof, respectively, so that the liquid pumped out by the impeller 110 can be diverted to the first channel 011 and the second channel 012 after passing through the heating chamber inlet 013, and the liquid flowing through the first channel 011 and the second channel 012 can converge at the heating chamber outlet 014.

[0052] In the above-mentioned heating pump 100, the liquid pumped out by the impeller 110 can be diverted to the first channel 011 and the second channel 012 after passing through the heating chamber inlet 013. The liquid flowing through the first channel 011 and the second channel 012 can converge at the heating chamber outlet 014. After the liquid pumped out by the impeller 110 is diverted, it passes through the first channel 011 and the second channel 012 and flows to the heating chamber outlet 014. The arrangement of the first channel 011 and the second channel 012 allows heat transfer to be carried out on both the inner and outer surfaces of the heating element, thereby increasing the thermal contact area between the heating element and the liquid, thereby improving the efficiency of heat transfer, and further improving the heating efficiency of the battery.

[0053] In addition, the liquid pumped out by the impeller can be diverted to the first channel 011 and the second channel 012, increasing the sum of the cross-sectional areas of the liquid channels, thereby increasing the fluidity of the liquid, so that the impeller 110 can select a higher efficiency, that is, the efficiency of the impeller 110 pumping out the liquid is increased, thereby improving the heating efficiency given to the battery.

[0054] Furthermore, the heating chamber inlet 013 and the heating chamber outlet 014 are respectively located at the two ends of the heating chamber 01. In the process of the liquid flowing from the heating chamber inlet 013 to the heating chamber outlet 014, the liquid has a small turning angle. For example, in this embodiment, the turning angle is less than 180°, thereby avoiding the generation of bubbles and better ensuring the flow rate of the liquid. Furthermore, the first channel 011 and the second channel 012 are respectively located on both sides of the heating element 141, thereby making full use of the heat emitted from both sides of the heating element 141.

[0055] It is understandable that the heater 140 further includes a driving structure for generating heat for the heating element 141. Optionally, the driving mechanism may be a power source or the like.

[0056] It can be understood that, in the present application, the liquid flowing through the first channel 011 and the second channel 012 can converge at the heating chamber outlet 014, which can be understood as the liquid flowing through the first channel 011 and the second channel 012 respectively flowing to the heating chamber outlet 014 and then converging; it can also be understood as the liquid flowing through the first channel 011 and the second channel 012 completes the convergence before flowing to the heating chamber outlet 014.

[0057] In this embodiment, the heating chamber 01 is roughly annular, the side housing 131 is located outside the heating chamber 01, and the motor housing 121 is located inside the heating chamber 01. The heating element 141 is also roughly annular, and the heating element 141 is coaxial with the heating chamber 01, so that the first channel 011 and the second channel 012 are both roughly annular, thereby avoiding the liquid from flowing radially in the first channel 011 and the second channel 012 to a large extent, thereby making the flow of the liquid smoother.

[0058] In addition, in this embodiment, the flow direction of the liquid pumped out by the impeller 110 has at least a circumferential component. The first channel 011 and the second channel 012 are both roughly annular, so that the liquid entering the first channel 011 and the second channel 012 can continue to flow in the circumferential direction while flowing to the heating chamber outlet 014, which greatly reduces the turning of the liquid, thereby making the flow of the liquid smoother. And the liquid flows in the circumferential direction at the same time, which can increase the contact time between the liquid and the heating element 141, so as to better heat the liquid and improve the heating effect of the heating pump 100.

[0059] It can be understood that in other feasible embodiments, the heating chamber is not limited to a circular ring shape, but can also be in other regular or irregular shapes.

[0060] See also Figure 1 , Figure 2 , Figure 4 and Figure 5 Optionally, the pump housing 130 further includes a lower cover 133, which is located at one end of the heating chamber outlet 014 of the heating chamber 01. The lower cover 133 has a converging surface 1331 exposed to the heating chamber 01, and a gap 02 is provided between the heating element 141 and the converging surface 1331. Thus, the first channel 011 and the second channel 012 are connected through the gap 02 at one end close to the heating chamber outlet 014. The liquid flowing out of the first channel 011 and the liquid flowing out of the second channel 012 flow into the gap 02 for converging.

[0061] In this embodiment, the converging surface 1331 is perpendicular to the axial direction of the heating chamber 01. It can be understood that in other feasible embodiments, the converging surface 1331 may not be perpendicular to the axial direction of the heating chamber 01.

[0062] Generally, when the heating pump 100 is in use, the lower cover 133 is located on the bottom side of the side shell 131. The axis of the heating chamber 01 is roughly along the vertical direction. Thereby, the flow direction of the liquid in the heating chamber 01 is avoided from being tilted radially of the heating chamber 01 due to the influence of gravity, thereby increasing the uniformity of the liquid distribution in the heating chamber 01. Thereby, on the one hand, the smoothness of the liquid flow is increased and the flow rate of the liquid is better guaranteed; on the other hand, the heat of the heating element 141 can be fully utilized, so that the temperature of the heated liquid in the heating chamber 01 is roughly consistent, thereby heating the battery more continuously and stably. It can be understood that in other feasible embodiments, or during use, the axial direction of the heating chamber is not limited to the vertical direction, and can also be tilted relative to the vertical direction.

[0063] In this embodiment, a plurality of support members 1332 are provided on the converging surface 1331, and the plurality of support members 1332 are arranged at intervals along the circumference of the heating element 141, and the heating element 141 is fixedly connected to the lower cover 133 through the support members 1332. Through the arrangement of the support members 1332, on the one hand, the fixed connection between the heating element 141 and the lower cover 133 is achieved, so that the position of the heating element 141 in the heating chamber 01 is relatively fixed; on the other hand, the heating element 141 and the converging surface 1331 of the lower cover 133 are arranged at intervals to form a gap 02. Specifically, optionally, a slot 1333 matching the heating element 141 is provided on the support member 1332, and the depth of the slot 1333 is less than the height of the support member 1332. The heating element 141 is inserted into the slot 1333 to achieve a fixed connection between the support member 1332 and the heating element 141. In addition, it can be understood that the support member 1332 is fixedly disposed on the converging surface 1331 , so the support member 1332 is relatively fixed to the lower cover 133 , thereby achieving a fixed connection between the heating element 141 and the lower cover 133 .

[0064] More specifically, the width of the slot 1333 matches the thickness of the heating element 141 , so that the heating element 141 and the supporting element 1332 are interference-fitted.

[0065] It is understandable that in other feasible embodiments, the way in which the support member and the heating element are connected is not limited to this. For example, mutually matching anti-slip grooves and anti-slip protrusions can be respectively provided on the side walls of the slot and the side walls of the heating element, so that the heating element and the support member are better fixed and the heating element is prevented from rotating. Of course, at this time, the heating element and the support member can be interference fit or clearance fit to achieve a fixed connection between the heating element and the support member.

[0066] It is understandable that, in other feasible embodiments, the method for achieving fixed connection between the heating element and the lower cover is not limited to this, for example, a pin connection or a threaded connection may also be used. Similarly, in other feasible embodiments, the method for achieving a relatively fixed position of the heating element in the heating chamber is not limited to the fixed connection between the heating element and the lower cover. For example, the heating element may be fixedly connected to the impeller, or the heating element may be fixedly connected to the pump housing, etc.

[0067] A first flow guiding structure 1334 is provided on the confluence surface 1331 of the heating chamber 01 to guide the liquid flowing out of the first channel 011 and the second channel 012 to flow to the heating chamber outlet 014 , so that the liquid can flow to the heating chamber outlet 014 more smoothly.

[0068] See also Figure 4 and Figure 5The first flow guiding structure 1334 has a starting end 1334a and an ending end 1334b. It is understandable that the starting end 1334a and the ending end 1334b of the first flow guiding structure 1334 are defined based on the flow guiding direction of the first flow guiding structure 1334. The liquid flowing to the first flow guiding structure 1334 extends along the first flow guiding structure 1334 and flows in the direction from the starting end 1334a to the ending end 1334b.

[0069] In this embodiment, the converging surface 1331 is further provided with a first stopper 1336; the first stopper 1336 is located at the starting end 1334a of the first flow guiding structure 1334. In other words, the provision of the first stopper 1336 can prevent the liquid from flowing in the direction opposite to the flow guiding direction of the first flow guiding structure 1334, thereby better allowing the liquid to flow more smoothly to the heating chamber outlet 014. The first flow guiding structure 1334 includes a flow guiding groove 1335 provided on the converging surface 1331; and the depth of the flow guiding groove 1335 gradually increases from the starting end 1334a to the end 1334b, thereby guiding the liquid to flow to the end 1334b of the first flow guiding structure 1334.

[0070] In addition, as mentioned above, in this embodiment, the liquid pumped out by the impeller 110 has a circumferential velocity component. Therefore, the liquid generally flowing out from the first channel 011 and the second channel 012 still has a circumferential velocity component. Therefore, when the liquid flows to the first flow-guiding structure 1334, it may enter the first flow-guiding structure 1334 from any position between the starting end 1334a and the end 1334b of the first flow-guiding structure 1334. Therefore, the closer to the end 1334b of the first flow-guiding structure 1334, the more liquid there is. Therefore, the depth of the guide groove 1335 increases, and it can also better ensure that the liquid flows to the position of the heating chamber outlet 014 more quickly and smoothly.

[0071] Optionally, the first flow guiding structure 1334 further includes a second stopper 1337 disposed on the confluence surface 1331 and located at the end 1334b of the flow guiding groove 1335. The second stopper 1337 has a flow guiding baffle 1338 tangent to the end 1334b of the inner side surface of the flow guiding groove 1335, and the height of the flow guiding baffle 1338 is greater than the height of the inner side wall of the flow guiding groove 1335. The setting of the flow guiding baffle 1338 can prevent the liquid flowing to this place from continuing to flow in the circumferential direction, and guide the liquid to flow to the heating chamber outlet 014, so that the liquid flows to the heating chamber outlet 014 more smoothly, and better ensures the efficiency of the liquid flowing out of the heating chamber outlet 014. In addition, the setting of the flow guiding baffle 1338 can also prevent the liquid flowing to this place from continuing to flow in the circumferential direction, thereby avoiding affecting the flow of the liquid that has not flowed to the end 1334b.

[0072] Optionally, the pump housing 130 further includes an upper cover 135 ; the upper cover 135 is located at one end of the heating chamber inlet 013 of the heating chamber 01 . The heating element 141 abuts against the upper cover 135 .

[0073] Of course, it is understandable that in other feasible embodiments, the heating element and the upper cover can also be fixedly connected, such as a snap connection, a threaded connection, etc. It is understandable that in other feasible embodiments, the heating element and the upper cover and / or the lower cover are fixedly connected, and the relative position of the heating element in the heating chamber can be fixed. Of course, in other feasible embodiments, the relative position of the heating element in the heating chamber can also be fixed by other means, for example, fixedly connected to the impeller, or fixedly connected to the motor, etc.

[0074] In this embodiment, the upper cover 135 is integrally formed with the side housing 131. It is understandable that in another feasible embodiment, the upper cover and the side housing may also be separately provided.

[0075] Alternatively, see Figure 2 , Figure 3 and Figure 6 The upper cover 135 covers the motor housing 121. The end of the motor housing 121 close to the impeller 110 and the end of the upper cover 135 close to the impeller 110 are provided with a second guide structure 1351, and the second guide structure 1351 is used to guide the liquid pumped out by the impeller 110 to flow to the heating chamber inlet 013.

[0076] Optionally, in this embodiment, the second flow guiding structure 1351 is a flow guiding pipe, and the cross-sectional area of ​​the second flow guiding structure 1351 gradually increases from the starting end 1351a to the end 1351b of the second flow guiding structure 1351, so that the liquid pumped out by the impeller 110 can flow to the heating chamber inlet 013 more smoothly.

[0077] It can be understood that the second flow guiding structure 1351 is connected to both the pump outlet 111 of the impeller 110 and the heating chamber inlet 013 , so that the liquid pumped out by the impeller 110 can flow into the heating chamber 01 through the second flow guiding structure 1351 .

[0078] In addition, the impeller 110 has a plurality of pump outlets 111 distributed along the circumferential direction, so the liquid pumped out by different pump outlets 111 enters the second flow guiding structure 1351 at different positions, so that more and more liquid flows from the starting end 1351a to the end 1351b of the second flow guiding structure 1351. Therefore, from the starting end 1351a to the end 1351b of the second flow guiding structure 1351, the cross-sectional area of ​​the second flow guiding structure 1351 gradually increases, and the liquid can flow to the heating chamber inlet 013 more smoothly.

[0079] Optionally, the second flow-guiding structure 1351 is surrounded by the upper cover 135 and the motor housing 121. Specifically in this embodiment, the end of the motor housing 121 close to the impeller 110 is provided with a first semi-flow-guiding structure 1352, and the end of the upper cover 135 close to the impeller 110 is provided with a second semi-flow-guiding structure 1353. The first semi-flow-guiding structure 1352 and the second semi-flow-guiding structure 1353 match and butt to form the second flow-guiding structure 1351.

[0080] More specifically, the first semi-guiding structure 1352 and the second semi-guiding structure 1353 are both groove-shaped.

[0081] More specifically, in this embodiment, the second flow guide structure 1351 is roughly annular, so that the liquid pumped out by the impeller 110 flows more smoothly to the first channel 011 and the second channel 012. Specifically, the liquid pumped out by the impeller 110 has a circumferential velocity component, and the liquid can continue to flow in the circumferential direction while flowing into the first channel 011 and the second channel 012, so that the flow of the liquid is smoother.

[0082] In this embodiment, the cross-sections of the first semi-guiding structure 1352 and the second semi-guiding structure 1353 are both semicircular in shape and of the same size. It is understood that in other feasible embodiments, the cross-sections of the first semi-guiding structure and the second semi-guiding structure are not limited to semicircular in shape, but may be any other regular or irregular shapes. The cross-sectional areas of the first semi-guiding structure and the second semi-guiding structure may be the same or different.

[0083] It is understandable that in other feasible embodiments, the manner in which the upper cover and the motor housing enclose the second flow-guiding structure is not limited thereto. For example, the upper cover and the motor housing, one of which is provided with a groove-shaped semi-flow-guiding structure, is butted with the surface of the other at a corresponding position to enclose the second flow-guiding structure.

[0084] It is understandable that, in other feasible embodiments, the position of the second flow guide structure is not limited thereto. For example, it can also be arranged at the end of the motor housing close to the impeller, or at the end of the upper cover close to the impeller.

[0085] See also Figure 2 Optionally, the motor housing 121 has an annular cavity 1211. The area surrounded by the annular cavity 1211 is an inner surrounding area 1212. The electrode includes a stator 122 disposed in the annular cavity 1211 and a rotor 123 located in the inner surrounding area 1212. Of course, it can be understood that in other feasible embodiments, the inner cavity of the motor housing is not limited to annular, but can also be any other regular or irregular shape. In addition, the rotor of the motor can also be disposed in the inner cavity of the motor housing.

[0086] In some feasible embodiments, a third flow guiding structure is provided on the inner side of the heating element; the third flow guiding structure is substantially spiral, extending from one end of the heating element close to the heating chamber inlet to one end of the heating element close to the heating chamber outlet, thereby guiding the liquid in the first channel to flow substantially spirally to the heating chamber outlet.

[0087] In some feasible embodiments, a fourth flow guiding structure is provided on the outer surface of the heating element; the fourth flow guiding structure is substantially spiral, extending from one end of the heating element close to the heating chamber inlet to one end of the heating element close to the heating chamber outlet, thereby guiding the liquid in the second channel to flow substantially spirally to the heating chamber outlet.

[0088] In some feasible embodiments, a fifth flow guiding structure is provided on the inner side surface of the side shell; the fifth flow guiding structure is substantially spiral, extending from one end of the side shell close to the inlet of the heating chamber to one end of the side shell close to the outlet of the heating chamber, thereby guiding the liquid in the second channel to flow substantially spirally to the outlet of the heating chamber.

[0089] Optionally, in some feasible embodiments, a sixth flow guiding structure is provided on the outer side of the motor housing; the sixth flow guiding structure is substantially spiral, extending from one end of the motor housing close to the heating chamber inlet to one end of the motor housing close to the heating chamber outlet, thereby guiding the liquid in the first channel to flow substantially spirally to the heating chamber outlet.

[0090] The third flow guiding structure, the fourth flow guiding structure, the fifth flow guiding structure and the sixth flow guiding structure are all spiral-shaped, so that the liquid can maintain a certain lateral velocity component while flowing toward the outlet of the heating chamber, thereby better heating the liquid.

[0091] One embodiment of the present specification provides a thermal management system, including the heat pump provided by the present application.

[0092] In the above-mentioned thermal management system, the liquid pumped out by the impeller can be diverted to the first channel and the second channel after passing through the inlet of the heating chamber, and the liquid flowing through the first channel and the second channel can converge at the outlet of the heating chamber. After the liquid pumped out by the impeller is diverted, it passes through the first channel and the second channel and flows to the outlet of the heating chamber. The setting of the first channel and the second channel allows heat transfer to be carried out on both the inner and outer surfaces of the heating element, increasing the thermal contact area between the heating element and the liquid, thereby improving the efficiency of heat transfer, and further improving the heating efficiency of the battery.

[0093] It can be understood that in the various implementations of this specification, the size of the sequence number of each process does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the implementation methods of this specification.

[0094] It can be understood that the various embodiments described in this specification can be implemented individually or in combination, and the embodiments of this specification are not limited to this.

[0095] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method implementation methods and will not be repeated here.

[0096] The above is only a specific implementation of this specification, but the protection scope of this application is not limited thereto. Any technician familiar with this technical field can easily think of changes or substitutions within the technical scope disclosed in this specification, which should be included in the protection scope of this specification. Therefore, the protection scope of this application should be based on the protection scope of the claims.

Claims

1. A heating pump, comprising: impeller; A motor, the motor is drivingly connected to the impeller and is used to drive the impeller to pump out liquid; The motor comprises a motor housing; The pump housing comprises a side housing arranged around the motor housing; a heating chamber is formed between the side housing and the motor housing; as well as A heater, the heater comprising a heating element disposed in the heating chamber and surrounding the motor; It is characterized in that The heating element divides the heating chamber into a first channel and a second channel, wherein the first channel is located at a side of the heating element close to the motor, and the second channel is located at a side of the heating element away from the motor; The heating chamber has a heating chamber inlet and a heating chamber outlet at opposite ends, respectively, so that the liquid pumped out by the impeller can be divided into the first channel and the second channel after passing through the heating chamber inlet, and the liquid flowing through the first channel and the second channel can converge at the heating chamber outlet.

2. The heating pump according to claim 1, characterized in that: The pump housing further comprises a lower cover, the lower cover being located at one end of the heating chamber outlet of the heating chamber; The lower cover has a converging surface exposed to the heating chamber, and a gap is formed between the heating element and the converging surface.

3. The heating pump according to claim 2, characterized in that: The converging surface is provided with a plurality of support members, the plurality of support members are arranged at intervals along the circumference of the heating element, and the heating element is fixedly connected to the lower cover through the support members.

4. The heating pump according to claim 3, characterized in that: The support member is provided with a slot matching the heating element, and the depth of the slot is smaller than the height of the support member.

5. The heating pump according to claim 1, characterized in that: The pump housing further comprises a lower cover; the lower cover is located at one end of the outlet of the heating chamber; The lower cover has a converging surface exposed to the heating chamber; a first flow guiding structure is arranged on the converging surface of the heating chamber to guide the liquid flowing out of the first channel and the second channel to flow to the outlet of the heating chamber.

6. The heating pump according to claim 5, characterized in that: A first stopper is also provided on the converging surface; the first stopper is located at the starting end of the first flow guiding structure; The first flow guiding structure comprises a flow guiding groove provided on the converging surface; and the depth of the flow guiding groove gradually increases from the starting end to the end end; The first guide structure also includes a second stopper arranged on the confluence surface and located at the end of the guide groove; the second stopper has a guide block surface tangent to the end of the inner side surface of the guide groove, and the height of the guide block surface is greater than the height of the inner side wall of the guide groove.

7. The heating pump according to any one of claims 1 to 6, characterized in that: The pump housing further comprises an upper cover; the upper cover is located at one end of the heating chamber inlet of the heating chamber; The heating element is in contact with the upper cover; The upper cover is covered on the motor housing, and the end of the motor housing close to the impeller and / or the end of the upper cover close to the impeller are provided with a second guide structure, and the second guide structure is used to guide the liquid pumped out by the impeller to flow to the heating chamber inlet.

8. The heating pump according to claim 7, characterized in that: The second flow guiding structure is a flow guiding pipe; and the cross-sectional area of ​​the second flow guiding structure gradually increases from the starting end to the end; The second flow guiding structure is surrounded by the upper cover and the motor housing.

9. The heating pump according to any one of claims 1 to 6, characterized in that: A third flow guiding structure is provided on the inner side of the heating element; the third flow guiding structure is substantially spiral, extending from one end of the heating element close to the inlet of the heating chamber to one end of the heating element close to the outlet of the heating chamber; And / or, a fourth flow guide structure is provided on the outer surface of the heating element; the fourth flow guide structure is substantially spiral, extending from one end of the heating element close to the inlet of the heating chamber to one end of the heating element close to the outlet of the heating chamber; And / or, a fifth flow guide structure is provided on the inner side surface of the side shell; the fifth flow guide structure is substantially spiral, extending from one end of the side shell close to the inlet of the heating chamber to one end of the side shell close to the outlet of the heating chamber; And / or, a sixth flow guide structure is provided on the outer surface of the motor housing; the sixth flow guide structure is roughly spiral, extending from one end of the motor housing close to the inlet of the heating chamber to one end of the motor housing close to the outlet of the heating chamber.

10. A thermal management system, characterized in that: A heating pump comprising the heating pump according to any one of claims 1 to 9.

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