Battery heat exchange piece, battery heat management system and vehicle

Abstract

The utility model discloses a battery heat exchange piece, a battery heat management system and a vehicle, and relates to the technical field of vehicle heat management, the battery heat exchange piece comprises two heat exchange areas distributed along a first direction and at least one flow path distributed in each heat exchange area; the heat exchange areas are used for exchanging heat with batteries, the flow path comprises a first interface and a second interface, the first interface is located on the adjacent sides of the two heat exchange areas, and the second interface is located on the sides, away from each other in the first direction, of the two heat exchange areas; one of the first connector and the second connector is used for allowing a heat exchange medium to flow in, and the other one of the first connector and the second connector is used for allowing the heat exchange medium to flow out. According to the technical scheme provided by the utility model, the temperature distribution of the battery pack is uniform by adjusting the flow path layout mode, so that the performance of the battery pack is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle thermal management technical field, especially a kind of battery heat exchange piece, battery thermal management system and vehicle. BACKGROUND

[0002] The temperature of vehicle battery influences the operating power of battery, in the related art, heat exchange piece is usually arranged on battery pack to maintain the temperature of battery pack in reasonable interval, such as cooling when battery overheats, heating when battery is too cold, etc. However, the simple circulation flow direction of cooling liquid in the current heat exchange piece is easy to cause uneven temperature distribution of battery pack, resulting in large temperature difference on battery pack, and further affecting the performance of battery pack. SUMMARY

[0003] The main purpose of the utility model is to propose a kind of battery heat exchange piece, battery thermal management system and vehicle, to make the temperature distribution of battery pack uniform by adjusting the layout of flow path, so as to guarantee the performance of battery pack.

[0004] To achieve the above object, the battery heat exchange piece provided by the utility model comprises:

[0005] Two heat exchange zones distributed along a first direction, the heat exchange zone is used to exchange heat with battery;

[0006] A plurality of flow paths, at least one flow path is distributed in each heat exchange zone, the flow path comprises a first interface and a second interface, the first interface is located at the adjacent side of two heat exchange zones, the second interface is located at the side of two heat exchange zones away from each other along the first direction, one of the first interface and the second interface is used for the inflow of heat exchange medium, and the other is used for the outflow of heat exchange medium.

[0007] In an embodiment, the flow path reciprocates in a second direction, forming a plurality of flow segments extending along the second direction, a plurality of flow segments are distributed along the first direction, and the second direction intersects the first direction.

[0008] In an embodiment, a plurality of flow channels are distributed in parallel in the flow segment, the end portions of a plurality of flow channels in the flow segment are connected, and the adjacent two flow segments are connected at the reversing position of the corresponding flow path.

[0009] In an embodiment, the first interface and the second interface of the flow path are distributed along the second direction.

[0010] In an embodiment, the flow paths of two heat exchange zones share the same first interface.

[0011] In an embodiment, the second interfaces of two heat exchange zones are connected to the outside through a multi-way piece.

[0012] In an embodiment, two of the heat exchange zones are symmetrically distributed along a first direction.

[0013] In an embodiment, flow paths of two of the heat exchange zones are symmetrically arranged along the first direction.

[0014] The utility model also proposes a battery thermal management system, including pump body, heat exchanger and as aforementioned battery heat exchange spare, pump body and heat exchanger are linked together, and one is communicated in the first interface of every flow path, and the other is communicated in the second interface of every flow path.

[0015] In an embodiment, the battery thermal management system includes two of the heat exchangers, which are respectively configured as a heater and a refrigerator, and the heater and the refrigerator are operated alternatively.

[0016] In an embodiment, the battery thermal management system further includes a four-way valve, two valve ports of the four-way valve are connected to the upstream of the pump body and the downstream of the heat exchanger respectively, and the other two valve ports are communicated to the first interface and the second interface of one of the flow paths respectively; when the flow paths of two of the heat exchange zones share the first interface, one of the valve ports of the four-way valve is connected to the first interface, and the other valve port is communicated to two of the second interfaces through a multi-way piece.

[0017] The utility model also proposes a vehicle, including battery pack and as aforementioned battery thermal management system, the battery heat exchange spare covers the electric core of battery pack.

[0018] In an embodiment, the width direction of the battery heat exchange piece is parallel to the width direction of the vehicle, and the first direction is configured as the width direction of the vehicle.

[0019] In an embodiment, the length direction of the battery heat exchange piece is parallel to the length direction of the vehicle, and the flow path reciprocally switches along the length direction of the vehicle.

[0020] The technical solution of this utility model divides the battery heat exchange component into two heat exchange zones distributed along a first direction. Each heat exchange zone is provided with at least one flow path for the flow of heat exchange medium. A first interface is provided at an adjacent position of the two heat exchange zones, and a second interface is provided at a position opposite to the two heat exchange zones along the first direction. The first interfaces of the two heat exchange zones allow the heat exchange medium to flow in or out simultaneously. Correspondingly, the second interfaces of the two heat exchange zones allow the heat exchange medium to flow out or in simultaneously, so that the heat exchange medium gradually flows in or out of the two heat exchangers along the first direction. Thus, when cooling the battery pack is required, the first interface is connected to a lower-temperature heat exchange medium, allowing the medium to flow first through the higher-temperature central region and then through the lower-temperature edge region, thereby ensuring effective cooling of the battery pack and maintaining a relatively uniform temperature across the pack. Similarly, when heating the battery pack is required, the second interface is connected to a higher-temperature heat exchange medium, allowing the medium to flow first through the lower-temperature edge region and then through the higher-temperature central region, thereby ensuring effective heating of the battery pack and maintaining a relatively uniform temperature across the pack, thus guaranteeing battery pack performance. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0022] Figure 1 A schematic diagram of a structure of an embodiment of the battery heat exchanger provided by this utility model;

[0023] Figure 2 A schematic diagram of an embodiment of the battery thermal management system provided by this utility model;

[0024] Figure 3 for Figure 2 A schematic diagram of the battery thermal management system in cooling mode;

[0025] Figure 4 for Figure 2 A schematic diagram of the battery thermal management system in heating mode.

[0026] Explanation of icon numbers:

[0027] 100. Heat exchange zone; 200. Flow path; 201. First interface; 202. Second interface; 203. Flow channel;

[0028] 300, four-way valve; 400, multi-way piece; 500, pump body; 600, heater; 700, refrigerator.

[0029] The realization, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0031] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain specific posture, and if the specific posture changes, the directional indications also change accordingly.

[0032] In addition, if the embodiments of the present application involve descriptions of "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features with "first" and "second" can explicitly or implicitly include at least one of the features. In addition, "and / or" or "and / or" appearing throughout the text means that the three parallel schemes are included, for example, "A and / or B" includes A scheme, or B scheme, or A and B simultaneously satisfy the scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of the ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor within the protection scope required by the present application.

[0033] In the prior art, the battery heat exchange element is wrapped on the surface of the battery pack, or is in the interlayer of the battery pack, or is on the side of the battery pack parallel to the horizontal, to realize heat exchange with the battery pack, wherein the flow path of the cooling liquid flowing in the heat exchange element is serpentine and single, and is arranged on the heat exchange element, and the flow path extends from the edge of the battery pack to the middle of the battery pack in a serpentine manner, and then extends to the other edge of the battery pack in a serpentine manner, so that the cooling liquid first exchanges heat with the edge of the battery pack, then exchanges heat with the middle of the battery pack, and then exchanges heat with the other edge of the battery pack. However, the heat distribution of the battery pack presents a gradual distribution between the middle and the edge, and the flow direction of the existing flow path does not conform to the heat distribution of the battery pack, which easily leads to uneven heat distribution of the battery pack. For example, in a hot environment, the middle of the battery pack has high heat, and the edge has low heat. Using the existing flow path for cooling, the cooling liquid with lower temperature first flows through the edge of the battery pack with lower temperature, then the cooling liquid with a certain temperature rise flows through the middle of the battery pack with higher temperature, and then the cooling liquid with higher temperature rise flows through the other edge of the battery pack with lower temperature. This not only reduces the cooling effect on the middle of the battery pack, but also makes the edge supplied with the cooling liquid first have lower temperature and the edge supplied with the cooling liquid later have higher temperature, resulting in a large temperature difference on the battery pack and affecting the performance of the battery pack. Similarly, in the heating mode, the flow direction of the downstream flow path also reduces the heating effect on the middle of the battery pack, and also causes a large temperature difference on the battery pack, affecting the performance of the battery pack.

[0034] The utility model provides a kind of battery heat exchange element.

[0035] Please refer to Figure 1 And Figure 2 In an embodiment of the utility model, the battery heat exchange element includes:

[0036] Two heat exchange zones 100 distributed along the first direction, the heat exchange zone 100 is used to exchange heat with the battery;

[0037] A plurality of flow paths 200, at least one flow path 200 is distributed in each heat exchange zone 100, the flow path 200 includes a first interface 201 and a second interface 202, the first interface 201 is located on the adjacent side of the two heat exchange zones 100, and the second interface 202 is located on the side away from each other of the two heat exchange zones 100 along the first direction, one of the first interface 201 and the second interface 202 is used to flow into the heat exchange medium, and the other is used to flow out of the heat exchange medium.

[0038] The technical scheme of the utility model discloses the battery heat exchange piece is divided into two heat exchange zones 100 along the first direction, each heat exchange zone 100 is provided with at least one flow path 200 for the flow of heat exchange medium, and the first interface 201 is arranged at the position adjacent to the two heat exchange zones 100, and the second interface 202 is arranged at the position opposite to the two heat exchange zones 100 along the first direction, and the first interface 201 of the two heat exchange zones 100 is simultaneously used for the flow of heat exchange medium, and correspondingly, the second interface 202 of the two heat exchange zones 100 is simultaneously used for the flow of heat exchange medium, so that the heat exchange medium presents the trend of gradually flowing along the first direction in the two heat exchangers. Figure 3 As shown, the first interface 201 accesses the heat exchange medium with lower temperature, so that the heat exchange medium flows through the edge area with lower temperature first and then flows through the middle area with higher temperature, thereby guaranteeing the cooling effect on the battery pack and also guaranteeing the relatively uniform temperature on the battery pack; similarly, as shown, Figure 4 The second interface 202 accesses the heat exchange medium with higher temperature, so that the heat exchange medium flows through the edge area with lower temperature first and then flows through the middle area with higher temperature, thereby guaranteeing the heating effect on the battery pack and also guaranteeing the relatively uniform temperature on the battery pack, thereby guaranteeing the performance of the battery pack.

[0039] It should be noted that the distance from the boundary of the two heat exchange zones 100 to the side of the battery pack or the battery heat exchange piece along the first direction is uniform and equal, or alternately changes, such as a snake shape or a zigzag shape, and the distance from the boundary of the two heat exchange zones 100 to the two sides of the battery pack or the battery heat exchange piece along the first direction can be equal or have an acceptable difference, and the acceptable difference means that the temperature difference of the two heat exchange zones 100 is small after the cooling liquid flows. In addition, the battery pack is usually square, especially rectangular, and the battery heat exchange piece is adapted to the shape of the battery pack, as shown, Figure 1 The flow path 200 of the heat exchange zone 100 is a flow channel 203 connected to the same first interface 201 and the same second interface 202, different flow paths 200 have at least one of different first interfaces 201 and second interfaces 202, so that different flow paths 200 are used for the flow of heat exchange medium with different sources. For at least one of the first interface 201 and the second interface 202 of the two heat exchange zones 100, the two first interfaces 201 or the two second interfaces 202 can be configured as the same interface, or can be independently arranged.

[0040] Each heat exchange area 100 can be configured with multiple sub-zones, each of which also has at least one flow path 200, and the sub-zones in the heat exchange area 100 have a coverage extending in the first direction, that is, the multiple sub-zones have a direction distribution intersecting or even perpendicular to the first direction, so that each sub-zone can flow between the middle part with higher temperature and the edge part with lower temperature, thereby efficiently and uniformly controlling the temperature of the battery pack according to the selection of heating or cooling, and as much as possible to refine the temperature control of the battery pack. Of course, in this embodiment, one heat exchange area 100 is provided with one flow path 200 as an example, which can be in a state of extending completely in the first direction, or in a combined form of extending in the first direction after extending perpendicular to the first direction, and as much as possible to reduce the case of extending in the first direction after reversing.

[0041] In an embodiment, please refer to Figure 1 and Figure 2 , the flow path 200 reciprocates in the second direction to form multiple flow segments extending in the second direction, and the multiple flow segments are distributed along the first direction, and the second direction intersects the first direction. It can be understood that the flow path 200 is in a serpentine distribution in the corresponding heat exchange area 100 to form flow segments extending in the second direction, and to achieve as much as possible uniform coverage of the corresponding heat exchange area 100, wherein the flow segments can extend to the edge position of the heat exchange area 100 in the second direction, or the extension lengths of different flow segments in the second direction have differences to form a zigzag extension around the second direction of the symmetry axis of the heat exchange area 100. In this embodiment, the extension direction of the flow segment is perpendicular to the first direction, so that the connection of adjacent flow segments realizes the posture of the flow in the first direction. It should be noted that the second direction is close to or perpendicular to the first direction, and the plane formed by the second direction and the first direction is parallel to the distribution plane of the multiple battery cells of the battery pack. In this way, for cooling, the whole in the second direction can be heated in the first direction from the middle to the edge, and for heating, the whole in the second direction can be heated in the first direction from the edge to the middle, thereby ensuring the uniformity of the temperature of the battery pack and improving the performance of the battery pack. Of course, in other embodiments, the flow path 200 can also have a main path extending in the second direction at the adjacent position of the two heat exchange areas 100, and then each branch path is uniformly spaced or distributed according to the temperature at each position in the second direction, and the branch path extends in the first direction to the edge of the corresponding heat exchange area 100.

[0042] Further, in this embodiment, please refer to Figure 1 and Figure 2The multiple flow channels 203 of a flow section are connected in parallel, the end portions of the multiple flow channels 203 of a flow section are connected, and adjacent two flow sections are connected at the reversing position of the corresponding flow path 200. It can be understood that, for each flow section, the multiple flow channels 203 are arranged in parallel, and for the flow section at the end portion of the flow path 200, the multiple flow channels 203 of the flow section are connected with the first interface 201 or the second interface 202, and the multiple flow channels 203 of the same flow section share the same first interface 201 and the same second interface 202, so that the heat exchange medium flowing in each flow channel 203 of the same flow section is heat exchange medium with similar temperature, thereby ensuring the uniformity of the temperature distribution of the battery pack. For the reversing position of the flow path 200, each flow channel 203 of the same flow section converges at the reversing position, and then flows into the multiple flow channels 203 after reversing to another flow section. In this way, the heat exchange medium of the multiple flow channels 203 of the flow section converges and then enters the multiple flow channels 203 of the next flow section for distribution, which can ensure that the temperature difference of the heat exchange medium in each flow channel 203 is within a reasonable range, and at the same time, it also reduces the influence on the heat exchange efficiency of the heat exchange medium in the flow path 200 and the battery pack, thereby improving the stability of the heat exchange efficiency with the battery pack and ensuring the uniformity of the temperature distribution of the battery pack. Specifically, two flow channels 203 are arranged in parallel in the same flow section, and three or four flow channels 203 can be arranged in parallel, or the number of flow channels 203 of different flow sections can also be different. The connection position of adjacent flow sections can be the end portion of the flow section, or a position other than the end portion. Of course, in other embodiments, the multiple flow channels 203 of adjacent flow sections can be independently connected, and the multiple flow channels 203 are always arranged in parallel in the corresponding heat exchange area 100.

[0043] In an embodiment, referring to Figure 1 The first interface 201 and the second interface 202 of a flow path 200 are arranged along the second direction. It should be noted that the first interface 201 and the second interface 202 of a flow path 200 are located in the same heat exchange area 100, and the first interface 201 and the second interface 202 of the same flow path 200 are arranged on opposite sides of the corresponding heat exchange area 100 in the first direction. Here, the first interface 201 and the second interface 202 of the same flow path 200 are also arranged along the second direction, so that the first interface 201 and the second interface 202 are arranged at diagonal positions of the corresponding heat exchange area 100. In this way, the extension length of the flow path 200 in the corresponding heat exchange area 100 is increased as much as possible, the heat exchange degree of the heat exchange medium and the battery pack is improved, and the first interface 201 and the second interface 202 are also convenient for being connected with external pipes, avoiding interference between the heat exchange medium input and the heat exchange medium output. Of course, in other embodiments, the first interface 201 and the second interface 202 of the same flow path 200 can also be arranged on the same side of the heat exchange area 100.

[0044] In an embodiment, referring to Figure 1, the flow paths 200 of the two heat exchange zones 100 share the same first interface 201. It can be understood that the first interface 201 is located adjacent to the two heat exchange zones 100, that is, the first interfaces 201 of the two heat exchange zones 100 are arranged adjacent to each other. Thus, the first interfaces 201 of the two heat exchange zones 100 are configured as the same first interface 201, that is, the flow paths 200 of the two heat exchange zones 100 both flow through the same first interface 201, which reduces the number of first interfaces 201, facilitates the communication between the battery heat exchange device and the outside, and can also reduce the temperature difference of the heat exchange medium flowing in the flow paths 200 of the two heat exchange zones 100, thereby ensuring the uniform distribution of temperature on the battery pack. Without loss of generality, the first interface 201 is located at the boundary between the two heat exchange zones 100 and is located at the edge of the battery heat exchange device. For a heat exchange zone 100 having multiple flow paths 200, some of the flow paths 200 can share the same first interface 201 with the flow paths 200 of another heat exchange zone 100, or all the flow paths 200 can share the same first interface 201. Of course, in other embodiments, the different flow paths 200 of the two heat exchange zones 100 each independently have a first interface 201.

[0045] Correspondingly, in the present embodiment, please continue to refer to Figure 1 and Figure 2 , the second interfaces 202 of the two heat exchange zones 100 are connected to the outside through the multi-way device 400. It can be understood that, with reference to the arrangement position of the second interface 202 described above, the second interfaces 202 of the two heat exchange zones 100 have a large spacing in the first direction. Thus, the second interfaces 202 of the two heat exchange zones 100 are connected to the outside through the multi-way device 400, that is, the flow paths 200 of the two heat exchange zones 100 both need to flow through the same multi-way device 400 and then be connected to the outside through the same multi-way device 400, which reduces the number of operations for connecting the external pipe, facilitates the communication between the battery heat exchange device and the outside, and can also reduce the temperature difference of the heat exchange medium flowing in the flow paths 200 of the two heat exchange zones 100, thereby ensuring the uniform distribution of temperature on the battery pack. Without loss of generality, the multi-way device 400 can be arranged on the battery heat exchange device, or can be connected through a pipe to a separately arranged multi-way device 400, and then be connected to the outside through an interface of the multi-way device 400 for the inflow or outflow of the heat exchange medium. Among them, the number of other interfaces of the multi-way device 400, except for the interface connected to the outside, is consistent with the number of the second interfaces 202 on the battery heat exchange device. Of course, in other embodiments, the second interfaces 202 of the two heat exchange zones 100 can also be independently connected to the outside for the independent flow of the heat exchange medium.

[0046] In an embodiment, please refer to Figure 1, two heat exchange areas 100 are symmetrically distributed along the first direction. It can be understood that the symmetry axis of the two heat exchange areas 100 extends perpendicularly to the first direction, that is, the boundary of the two heat exchange areas 100 is the middle part of the battery heat exchange element in the first direction, so that the two heat exchange areas 100 are uniformly heat exchanged with the battery pack, and the first interface 201 is also correspondingly located at the middle position of the battery heat exchange element in the first direction, so that the heat exchange medium can flow along the first direction and between the middle and the edge of the battery pack, as Figure 3 shown, in cooling mode, the first interface 201 accesses the heat exchange medium, and the second interface 202 flows out the heat exchanged heat exchange medium, so that the middle high temperature position of the battery pack is cooled first and quickly, and the edge position with relatively low temperature is cooled later, realizing cooling while ensuring uniform temperature distribution of the battery pack, that is, ensuring the performance of the battery pack; similarly, as Figure 4 shown, in heating mode, the heat exchange medium flows in the opposite direction to the cooling mode. Of course, in other embodiments, the two heat exchange areas 100 can also have an area difference in the first direction, or the boundary of the two heat exchange areas 100 is in the middle of the battery heat exchange element in the first direction. It is serpentine or zigzag.

[0047] Correspondingly, in the embodiment, please refer to Figure 1 , the flow path 200 of the two heat exchange areas 100 is symmetrically arranged in the first direction. Referring to the above description of the symmetric distribution of the two heat exchange areas 100, the flow path 200 of the two heat exchange areas 100 is symmetrically arranged in the first direction, so that the heat exchange medium can flow symmetrically along the first direction and between the middle and the edge of the battery pack, and then the two heat exchange areas 100 and the battery pack are uniformly heat exchanged, that is, the heat distribution of the battery pack in the first direction is uniform, thereby improving the performance of the battery pack. In addition, it can also avoid the situation that the temperature distribution uniformity of the battery heat exchange process is affected due to the wrong connection of the second interface 202, and improve the convenience of connection and installation of the battery heat exchange element. Of course, in other embodiments, while ensuring that the heat exchange medium in the flow path 200 has a tendency to flow in the first direction, the flow path 200 of the two heat exchange areas 100 can also be asymmetrically arranged.

[0048] The utility model further provides a battery thermal management system, like Figure 2As shown, the battery thermal management system comprises a battery heat exchange element, the specific structure of which is referred to the above-mentioned embodiments. Since the battery thermal management system adopts all the technical solutions of the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here. Among them, the battery thermal management system further comprises a pump body 500 and a heat exchanger, the pump body 500 and the heat exchanger are in communication, and one of them is communicated with the first interface 201 of each flow path 200, and the other is communicated with the second interface 202 of each flow path 200. Through the heat control of the heat exchange medium by the heat exchanger, the heat exchange between the battery heat exchange element and the battery pack is ensured, and the performance of the battery pack is ensured.

[0049] In an embodiment, please refer to Figures 2 to 4 , the battery thermal management system comprises two heat exchangers, which are respectively configured as a heater 600 and a refrigeration device 700, and the heater 600 and the refrigeration device 700 operate alternately. It can be understood that the battery thermal management system has a heating mode and a cooling mode. In the cooling mode, as shown in Figure 3 , the pump body 500 and the refrigeration device 700 operate, and the refrigeration device 700 reduces the temperature of the heat exchange medium. Under the action of the pump body 500, the low-temperature heat exchange medium enters the flow path 200 of the two heat exchange zones 100 from the first interface 201 through the pipe, so that the low-temperature heat exchange medium flows from the middle part of the battery pack to the edge part of the battery pack in a flow mode of gradually covering the battery pack in the first direction, and then flows out at the second interface 202 at the edge of the battery heat exchange element, forming a flow mode of flowing through the high-temperature area in the middle part of the battery pack first, and then flowing through the relatively low-temperature edge area, which improves the cooling efficiency and also ensures the uniform temperature on the battery pack; in the heating mode, as shown in Figure 4 , the pump body 500 and the heater 600 operate, and the heater 600 heats the heat exchange medium. Under the action of the pump body 500, the high-temperature heat exchange medium enters the flow path 200 of the two heat exchange zones 100 from the second interface 202 through the pipe, so that the high-temperature heat exchange medium flows from the edge of the battery pack to the middle part of the battery pack in a flow mode of gradually covering the battery pack in the first direction, and then flows out at the first interface 201 in the middle part of the battery heat exchange element, forming a flow mode of flowing through the low-temperature area in the edge of the battery pack first, and then flowing through the relatively high-temperature middle part, which improves the heating efficiency and also ensures the uniform temperature on the battery pack. Of course, in other embodiments, two pump bodies 500 can also be configured, one pump body 500 and the heater 600 are connected in series and form a loop with the first interface 201 and the second interface 202 of each flow path 200, at this time, the flow direction is set as one-way flow from the heater 600, the second interface 202, the first interface 201 to the pump body 500; one pump body 500 and the refrigeration device 700 are connected in series and form a loop with the first interface 201 and the second interface 202 of each flow path 200, at this time, the flow direction is set as one-way flow from the refrigeration device 700, the first interface 201, the second interface 202 to the pump body 500.

[0050] In an embodiment, referring to Figures 2 to 4 , the battery thermal management system further comprises a four-way valve 300, two valve ports of the four-way valve 300 are connected to the upstream of the pump body 500 and the downstream of the heat exchanger respectively, and the other two valve ports are communicated with the first interface 201 and the second interface 202 of one flow path 200; when the flow paths 200 of the two heat exchange areas 100 share the first interface 201, one valve port of the four-way valve 300 is connected to the first interface 201, and the other valve port is communicated with the two second interfaces 202 through the multi-way piece 400. It can be understood that the heat exchanger comprises heating and refrigeration functions, or is configured as a heater 600 and a refrigerator 700, in the heating mode, as shown in Figure 4 , the heater 600 operates, and the pump body 500 pumps the heated heat exchange medium to the four-way valve 300, and the four-way valve 300 switches the valve ports connected to the first interface 201 and the second interface 202, and guides the high-temperature heat exchange medium to the second interface 202, and then flows through the flow paths 200 of the two heat exchange areas 100, and then returns to the four-way valve 300 from the first interface 201, and is guided by the four-way valve 300 to return to the pump body 500 and the heater 600 for reheating, to ensure the continuous operation of the heating mode; correspondingly, in the refrigeration mode, as shown in Figure 3 , the refrigerator 700 operates, and the pump body 500 pumps the cooled heat exchange medium to the four-way valve 300, and the four-way valve 300 switches the valve ports connected to the first interface 201 and the second interface 202, and guides the low-temperature heat exchange medium to the first interface 201, and then flows through the flow paths 200 of the two heat exchange areas 100, and then returns to the four-way valve 300 from the second interface 202, and is guided by the four-way valve 300 to return to the pump body 500 and the refrigerator 700 for recooling, to ensure the continuous operation of the cooling mode. In this way, through the setting of the four-way valve 300, through a set of series components, the heating mode and the cooling mode are realized, the number of components such as pipes and pump bodies 500 is reduced, and the battery thermal management system is simplified.

[0051] The utility model further proposes a vehicle, the vehicle includes battery thermal management system, the specific structure of the battery thermal management system refers to the above embodiment, because the vehicle adopts all the technical schemes of the above all embodiments, therefore at least has all the beneficial effects brought by the technical scheme of the above embodiment, here will not repeat again. Among them, the vehicle also includes battery pack, battery heat exchange piece covers the electric core of battery pack, and then improves the heat exchange efficiency of the electric core, and guarantees the uniform distribution of the temperature of the battery pack.

[0052] In an embodiment, the width direction of the battery heat exchange element is parallel to the width direction of the vehicle, and the first direction is configured as the width direction of the vehicle. It should be noted that the battery pack is located at the chassis position of the vehicle, and the width direction thereof is also the width direction of the vehicle. In addition, the battery pack is greatly affected by the ambient temperature on both sides in the vehicle width direction. Therefore, the first direction is configured as the vehicle width direction, that is, the two heat exchange zones are distributed along the vehicle width direction, and the heat exchange medium can flow between the middle and the edge of the battery pack along the vehicle width direction, thereby adapting to the temperature distribution trend of the battery pack, improving the heat exchange effect of the battery pack, and ensuring the uniformity of the temperature of the battery pack in the heat exchange process, and improving the performance of the battery pack. Of course, in other embodiments, according to different placement attitudes of the battery pack, the first direction can also be configured as the vehicle length or height direction.

[0053] Correspondingly, in an embodiment, the length direction of the battery heat exchange element is parallel to the length direction of the vehicle, and the flow path reciprocates along the length direction of the vehicle. Without loss of generality, the battery pack is located at the chassis position of the vehicle, and the length direction thereof is also the length direction of the vehicle. In addition, the battery pack is less affected by the ambient temperature on both sides in the vehicle length direction, and the temperature of the battery pack changes less in the vehicle length direction. Therefore, the flow path reciprocates along the vehicle length direction, and in the cooling mode, the battery pack in the middle of the vehicle width can be quickly heat-exchanged, that is, the temperature of the battery pack is quickly reduced, and then gradually radiated from the vehicle width direction to the vehicle width edge, while reducing the problem of uneven heat distribution of the battery pack in the cooling process. Or, in the heating mode, the battery pack in the vehicle width edge can be quickly heat-exchanged, that is, the temperature of the battery pack is quickly increased, and then gradually heated from the vehicle width direction to the middle of the vehicle, while reducing the problem of uneven heat distribution of the battery pack in the heating process. In addition, the flow path reciprocates along the vehicle length direction, and the heat exchange medium covers the battery pack in the vehicle length direction for a short time, which can ensure that the heat exchange difference in the vehicle length direction is in a small interval. In combination with the first direction being parallel to the vehicle width direction and the flow path having a gradually extending trend in the vehicle width direction, the uniformity of the heat distribution of the battery pack in the heat exchange process is improved, thereby improving the performance of the battery pack.

[0054] The above description is only an exemplary embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structural transformation or direct / indirect application in other related technical fields based on the technical concept of the present application and the contents of the present application are included in the patent protection scope of the present application.

Claims

1. A battery heat exchanging member, characterized by, The battery heat exchange element comprises: two heat exchange zones distributed along a first direction, the heat exchange zones being used to exchange heat with the battery; a plurality of flow paths, at least one flow path being distributed in one of the heat exchange zones, the flow path comprising a first interface and a second interface, the first interface being located at a side adjacent to the two heat exchange zones, the second interface being located at a side away from the two heat exchange zones along the first direction, one of the first interface and the second interface being used for the heat exchange medium to flow in, and the other being used for the heat exchange medium to flow out.

2. The battery heat exchanging member according to claim 1, wherein The flow path is reciprocally switched in a second direction, forming a plurality of flow segments extending along the second direction, a plurality of the flow segments being distributed along the first direction, the second direction intersecting the first direction.

3. The battery heat exchanging member according to claim 2, wherein The flow segments are distributed in parallel with a plurality of flow channels, the end portions of the flow channels of one flow segment being connected, and adjacent two flow segments being connected at the switching position of the corresponding flow path.

4. The battery heat exchanging member according to claim 2, wherein The first interface and the second interface of one flow path are distributed along the second direction.

5. The battery heat exchanger of claim 1, wherein, The flow paths of the two heat exchange zones share the same first interface; and / or, the second interfaces of the two heat exchange zones are connected to the outside through a multi-way piece.

6. The battery heat exchanger of claim 1, wherein, The two heat exchange zones are symmetrically distributed along the first direction; and / or, the flow paths of the two heat exchange zones are symmetrically arranged along the first direction.

7. A battery thermal management system, characterized by, The battery heat management system comprises a pump body and a heat exchanger connected to each other, and one of the pump body and the heat exchanger is connected to the first interface of each flow path, and the other is connected to the second interface of each flow path.

8. The battery thermal management system of claim 7, wherein, The battery heat management system comprises two heat exchangers configured as a heater and a cooler respectively, and the heater and the cooler are operated alternately; and / or, the battery heat management system further comprises a four-way valve, two valve ports of the four-way valve are connected to the upstream of the pump body and the downstream of the heat exchanger respectively, and the other two valve ports are connected to the first interface and the second interface of one flow path respectively; when the flow paths of the two heat exchange zones share the first interface, one of the valve ports of the four-way valve is connected to the first interface, and the other valve port is connected to the two second interfaces through a multi-way piece.

9. A vehicle characterized by comprising: The battery heat management system comprises a battery pack and a battery heat management system as claimed in claim 7 or 8, and the battery heat exchange element covers the battery cells of the battery pack.

10. The vehicle of claim 9, wherein, The width direction of the battery heat exchange element is parallel to the width direction of the vehicle, and the first direction is configured as the width direction of the vehicle; and / or, the length direction of the battery heat exchange element is parallel to the length direction of the vehicle, and the flow path is reciprocally switched along the length direction of the vehicle.

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