Heat exchange device, battery pack and vehicle

Abstract

The invention relates to a heat exchange device, a battery pack and a vehicle. The heat exchange device comprises a shell, a valve and a liquid inlet pipe; a flow channel piece is arranged in the shell, the liquid inlet pipe is connected with the flow channel piece through a valve, the liquid inlet end of the valve is connected with the liquid outlet end of the liquid inlet pipe, and the liquid outlet end of the valve is connected with the liquid inlet end of the flow channel piece. The valve comprises a valve body, a movable valve element and a temperature sensing elastic piece, the movable valve element and the temperature sensing elastic piece are installed in the valve body, the two ends of the temperature sensing elastic piece are connected to the movable valve element and the valve body respectively, the movable valve element comprises a channel piece, and fluid of the liquid inlet pipe makes contact with the temperature sensing elastic piece through the channel piece so as to change the temperature of the temperature sensing elastic piece. The temperature sensing elastic piece is used for providing elastic force for the movable valve element to drive the movable valve element to move relative to the valve body so as to change the caliber of the valve body, and therefore the flow of fluid in the flow channel piece is changed. According to the heat exchange device, the valve changes the flow of the fluid in the flow channel piece according to the temperature of the fluid, and therefore distribution of the flow of the fluid in the heat exchange device is adjusted.

Description

Technical Field

[0001] The present application belongs to the technical field of complete vehicles and accessories, and specifically relates to a heat exchange device, a battery pack and a vehicle. Background Art

[0002] When the vehicle is driving or charging, the battery pack will release a lot of heat, and a heat exchange system needs to be established to dissipate the heat in time to avoid current limitation or even thermal runaway of the battery pack. When the vehicle is in standby mode or in a low-temperature environment, the temperature of the battery pack will drop, and the heat exchange system needs to be used as a heating system to heat the battery pack to improve the performance of the battery pack. That is, whether the vehicle is driving or charging, or in standby mode or in a low-temperature environment, the temperature of the battery pack needs to be maintained within a reasonable temperature range through the temperature of the heat exchange system to improve the performance of the battery pack.

[0003] In the heat exchange system provided by the relevant technology, the flow rate of the fluid in the heat exchange system is relatively fixed, while the flow rate of the fluid required for heat dissipation of the battery pack is greater than the flow rate of the fluid required for heating the battery pack. The flow distribution of the heat exchange system is difficult to simultaneously meet the temperature uniformity requirements of the battery pack under different conditions, making it inconvenient to use. Summary of the invention

[0004] The purpose of the present application is to provide a heat exchange device, a battery pack and a vehicle. The heat exchange device can change the flow rate of the fluid according to the temperature of the fluid, thereby adjusting the distribution of the flow rate of the heat exchange device.

[0005] In the first aspect, the present application provides a heat exchange device. The heat exchange device includes a shell, a liquid inlet pipe and a valve; a flow channel member is provided in the shell, the liquid inlet pipe is connected to the flow channel member through the valve, the liquid inlet end of the valve is connected to the liquid outlet end of the liquid inlet pipe, and the liquid outlet end of the valve is connected to the liquid inlet end of the flow channel member; the valve includes a valve body, a movable valve core and a temperature-sensitive elastic member, the movable valve core and the temperature-sensitive elastic member are installed inside the valve body, the two ends of the temperature-sensitive elastic member are respectively connected to the movable valve core and the valve body, the movable valve core includes a channel member, the fluid in the liquid inlet pipe contacts the temperature-sensitive elastic member through the channel member to change the temperature of the temperature-sensitive elastic member; the temperature-sensitive elastic member is used to provide elastic force to the movable valve core, drive the movable valve core to move relative to the valve body, so as to change the flow rate of the fluid in the flow channel member

[0006] In some embodiments, when the temperature of the temperature-sensitive elastic member is higher than a first threshold value, the temperature-sensitive elastic member expands, and the temperature-sensitive elastic member drives the movable valve core to move to reduce the flow rate of the fluid in the flow channel member; when the temperature of the temperature-sensitive elastic member is lower than a second threshold value, the temperature-sensitive elastic member contracts, and the temperature-sensitive elastic member pulls the movable valve core to move to increase the flow rate of the fluid in the flow channel member; the first threshold value is greater than the second threshold value.

[0007] In some embodiments, the valve also includes a first clamping seat, which is fixed to the inside of the valve body, and the first clamping seat is located on the side of the movable valve core away from the liquid outlet end of the liquid inlet pipe, and the two ends of the temperature-sensitive elastic member are respectively connected to the first clamping seat and the movable valve core.

[0008] In some embodiments, the first holder includes a blocking cover and a positioning boss, the positioning boss is protruding from the surface of the blocking cover, the blocking cover is fixedly connected to the valve body to block the valve body; the positioning boss is connected to the temperature-sensitive elastic member.

[0009] In some embodiments, the valve also includes a pre-tightening elastic member, which is installed inside the valve body. The pre-tightening elastic member is located on the side of the movable valve core away from the temperature-sensitive elastic member, and the two ends of the pre-tightening elastic member are respectively connected to the movable valve core and the valve body; the pre-tightening elastic member is used to provide a pre-tightening force to the movable valve core, driving the movable valve core to move and reset.

[0010] In some embodiments, the valve also includes a second holder, which is fixedly connected to the valve body, and the second holder is located on the side of the movable valve core facing the liquid outlet end of the liquid inlet pipe, and the two ends of the pre-tightening elastic member are respectively connected to the second holder and the movable valve core.

[0011] In some embodiments, the heat exchange device further includes a liquid outlet pipe, and a liquid inlet end of the liquid outlet pipe is connected to a liquid outlet end of the flow channel member.

[0012] In some embodiments, the flow channel member includes a first flow channel member and a second flow channel member, the liquid inlet end of the first flow channel member is connected to the liquid outlet end of the valve, the liquid outlet end of the first flow channel member is connected to the liquid inlet end of the second flow channel member, and the liquid outlet end of the second flow channel member is connected to the liquid inlet end of the liquid outlet pipe.

[0013] In some embodiments, the first flow channel member and the second flow channel member are arranged in sequence along the width direction of the housing, and the liquid inlet end of the first flow channel member and the liquid outlet end of the second flow channel member are located on the same side of the housing.

[0014] In some embodiments, the flow channel member includes multiple first flow channel members and at least one second flow channel member, the liquid inlet end of each of the first flow channel members is connected to the liquid outlet end of the valve, the liquid outlet ends of the multiple first flow channel members are connected in sequence and connected to the liquid inlet end of the second flow channel member, and the liquid outlet end of the second flow channel member is connected to the liquid outlet pipe.

[0015] In some embodiments, a plurality of the first flow channel components and the second flow channel components are arranged in sequence along the width direction of the shell; at least part of the first flow channel components are arranged on one side of the second flow channel component, and the other part of the first flow channel components are arranged on the other side of the second flow channel component; the liquid inlet ends of the plurality of the first flow channel components and the liquid outlet ends of the second flow channel components are located on the same side of the shell.

[0016] In the second aspect, the present application provides a battery pack, which includes a battery module and the heat exchange device, wherein the battery module is affixed to the shell of the heat exchange device; the battery module includes a first operating condition and a second operating condition, and when the battery module is in the first operating condition, the heat exchange device cools the battery module; when the battery module is in the second operating condition, the heat exchange device heats the battery module.

[0017] In a third aspect, the present application provides a vehicle, comprising a mechanism housing and a battery pack, wherein the battery pack is installed in the mechanism housing.

[0018] In the heat exchange device of the present application, the liquid inlet pipe is connected to the flow channel part through a valve, the liquid inlet end of the valve is connected to the liquid outlet end of the liquid inlet pipe, the liquid outlet end of the valve is connected to the liquid inlet end of the flow channel part, and the fluid enters the flow channel part of the shell through the liquid inlet pipe and the valve. The valve includes a valve body, a movable valve core and a temperature-sensitive elastic part, the movable valve core and the temperature-sensitive elastic part are installed inside the valve body, the two ends of the temperature-sensitive elastic part are respectively connected to the movable valve core and the valve body, the movable valve core is provided with a channel part, the liquid outlet end of the liquid inlet pipe is connected to the channel part, and the fluid in the liquid inlet pipe contacts the temperature-sensitive elastic part through the channel part to change the temperature of the temperature-sensitive elastic part; the temperature-sensitive elastic part has a two-way driving elastic force, and the temperature-sensitive elastic part is used to provide elastic force to the movable valve core, drive the movable valve core to move in the valve body, so as to change the flow rate of the fluid in the flow channel part. The valve changes the flow rate of the fluid in the flow channel part according to the temperature of the fluid, thereby adjusting the distribution of the fluid flow in the heat exchange device. The main driving factor of the valve is the fluid temperature, and there is no need to establish a complex external mechanical or electromagnetic circuit for control, which simplifies the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings required for use in the implementation mode will be briefly introduced below. Obviously, the drawings described below are some implementation modes of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of a heat exchange device provided in one embodiment of the present application.

[0021] Figure 2 yes Figure 1 Side view of the valve in Figure 1.

[0022] Figure 3 yes Figure 3 A cross-sectional view of the valve in one of its states.

[0023] Figure 4 yes Figure 3 A cross-sectional view of the valve in another state.

[0024] Figure 5 yes Figure 1 Exploded view of the housing.

[0025] Figure 6 yes Figure 5 Another perspective diagram of the shell. DETAILED DESCRIPTION

[0026] The technical scheme in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment of the present invention. Obviously, the described embodiment is only a part of the embodiment of the present invention, not all of the embodiments. Based on the embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] The following descriptions of the embodiments are made with reference to the attached drawings to illustrate specific implementations of the present invention. Directional terms mentioned in the present invention, such as "top", "bottom", "front", "back", "left", "right", "inside", "outside", "side", etc., are only with reference to the directions of the attached drawings. Therefore, the directional terms used are for better and clearer description and understanding of the present invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and should not be understood as a limitation of the present invention.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installed", "connected", "connected", and "set on..." should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, and it can be the internal connection of two elements.

[0029] In the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", and "third" may explicitly or implicitly include one or more of the features.

[0030] See also Figure 1 The embodiment of the present application provides a heat exchange device 100, which is used to heat or cool a heat exchange mechanism 200 to maintain the temperature of the heat exchange mechanism 200 within a reasonable temperature range. The heat exchange mechanism 200 can be a battery module or other suitable structure.

[0031] The heat exchange device 100 includes a shell 10, a liquid inlet pipe 20 and a valve 30. The liquid inlet pipe 20 is connected to the shell 10 through the valve 30. The liquid inlet pipe 20 is used to transport fluid into the shell 10, and the valve 30 is used to control the size of the fluid flow in the liquid inlet pipe 20. The shell 10 is a rectangular structure, and the heat exchange mechanism 200 is attached to the outer side of the shell 10, so as to heat or cool the heat exchange mechanism 200. It should be understood that under the same conditions, the greater the fluid flow in the liquid inlet pipe 20, the shorter the heat exchange time of the heat exchange device 100 for the heat exchange mechanism 200. The above heat exchange time refers to the time taken for the heat exchange mechanism 200 to go from the initial temperature to the target temperature when the heat exchange mechanism 200 exchanges heat through the heat exchange device 100.

[0032] For ease of description, the width direction of the housing 10 is defined as the X-axis direction, the length direction of the housing 10 is defined as the Y-axis direction, and the thickness direction of the housing 10 is defined as the Z-axis direction. The X-axis direction, the Y-axis direction, and the Z-axis direction are perpendicular to each other.

[0033] Specifically, the liquid inlet pipe 20 is a pipe body with a certain length. The liquid inlet pipe 20 is provided with a first tube cavity extending along its axial direction. The liquid inlet pipe 20 includes a liquid inlet end and a liquid outlet end provided at opposite ends thereof. The liquid inlet end of the liquid inlet pipe 20 is provided with a liquid inlet, and the liquid outlet end of the liquid inlet pipe 20 is provided with a liquid outlet. Both the liquid inlet and the liquid outlet are connected to the first tube cavity. The liquid inlet end of the liquid inlet pipe 20 is used to connect to a fluid storage member (not shown). The liquid outlet end of the liquid inlet pipe 20 is used to connect to a valve 30.

[0034] The fluid storage element includes a box body (not shown) and a temperature-changing element (not shown). The box body has a storage cavity for storing fluid. The temperature-changing element is used to heat or cool the fluid. The box body is provided with a connecting hole, which passes through the inner and outer walls of the box body. The liquid inlet end of the liquid inlet pipe 20 is connected to the box body, and the connecting hole is connected to the liquid inlet of the liquid inlet pipe 20. The fluid can be a liquid such as water and glycerin, or a gas, etc., which is not limited here.

[0035] See also Figures 2 to 4 The valve 30 includes a valve body 31, a movable valve core 32 and a temperature-sensitive elastic member 33. The movable valve core 32 and the temperature-sensitive elastic member 33 are installed inside the valve body 31, and two ends of the temperature-sensitive elastic member 33 are respectively connected to the movable valve core 32 and the valve body 31.

[0036] Specifically, the valve body 31 includes a first body 311 and a second body 312, and the first body 311 and the second body 312 are both cylindrical. The first body 311 and the second body 312 are connected in a T-shape, and the first body 311 passes through the second body 312. The first body 311 is provided with a temperature sensing cavity 313 extending along its axial direction (i.e., the Y-axis direction), and the second body 312 is provided with a regulating cavity 314 extending along its axial direction (i.e., the Z-axis direction). The temperature sensing cavity 313 and the regulating cavity 314 are connected. The opposite ends of the second body 312 are respectively the liquid inlet end and the liquid outlet end of the valve body 31, the liquid inlet end of the valve body 31 is provided with a liquid inlet, and the liquid outlet end of the valve body 31 is provided with a liquid outlet. The liquid inlet and the liquid outlet of the valve body 31 are both connected with the regulating cavity 314. The liquid outlet end of the valve body 31 is used to be connected to the housing 10, and the liquid inlet end of the valve body 31 is used to be connected to the liquid outlet end of the liquid inlet pipe 20.

[0037] The liquid inlet end of the liquid inlet pipe 20 is fixedly inserted into the connecting hole of the box body, the liquid outlet end of the liquid inlet pipe 20 is connected to the liquid inlet end of the valve body 31, and the liquid outlet end of the valve body 31 is further connected to the outer shell 10. At this time, the storage cavity of the box body, the liquid inlet of the liquid inlet pipe 20, the first tube cavity of the liquid inlet pipe 20, the liquid outlet of the liquid inlet pipe 20, the liquid inlet of the valve body 31, the regulating cavity 314 of the valve body 31, the temperature sensing cavity 313 of the valve body 31, the liquid outlet of the valve body 31 and the interior of the outer shell 10 are connected in sequence, and the fluid in the box body can be transported to the interior of the outer shell 10 through the liquid inlet pipe 20 and the valve 30 in sequence.

[0038] The movable valve core 32 and the temperature-sensitive elastic member 33 are installed in the temperature-sensitive chamber 313. The movable valve core 32 is provided with a channel member 321. The channel member 321 is provided with a channel 3211 extending along its axial direction (i.e., the Y-axis direction). The temperature-sensitive chamber 313 and the regulating chamber 314 are connected through the channel 3211 of the channel member 321. A part of the fluid in the regulating chamber 314 enters the temperature-sensitive chamber 313 through the channel 3211, and another part of the fluid in the regulating chamber 314 flows to the liquid outlet of the valve 30. The fluid entering the temperature-sensitive chamber 313 contacts the temperature-sensitive elastic member 33, and can change the temperature of the temperature-sensitive elastic member 33.

[0039] The temperature-sensitive elastic member 33 can be made of a memory metal or alloy material with a two-way memory effect, and has good temperature sensitivity. When the temperature of the temperature-sensitive elastic member 33 changes, the temperature-sensitive elastic member 33 will produce corresponding deformation, thereby realizing the expansion or contraction of the temperature-sensitive elastic member 33. The temperature-sensitive elastic member 33 can be a reed structure, a spring structure or other suitable structures. The temperature-sensitive elastic member 33 is used to provide elastic force to the movable valve core 32, driving the movable valve core 32 to move along the Y-axis direction relative to the valve body 31, and the caliber of the valve 30, that is, changing the caliber of the regulating chamber 314, thereby changing the fluid flow rate in the liquid outlet of the valve 30. The caliber of the above-mentioned valve 30 refers to the distance between the end face of the movable valve core 32 away from the temperature-sensitive elastic member 33 and the wall surface of the second body 312 cavity in the Y-axis direction.

[0040] For details, please refer to Figure 3 and Figure 4 When the temperature of the temperature-sensitive elastic member 33 is higher than the first threshold, the temperature-sensitive elastic member 33 expands, and the temperature-sensitive elastic member 33 drives the movable valve core 32 to move rightward, and the movable valve core 32 blocks at least part of the regulating chamber 314 to reduce the caliber of the regulating chamber 314, thereby reducing the flow rate of the fluid at the outlet of the valve 30. When the temperature of the temperature-sensitive elastic member 33 is lower than the second threshold, the temperature-sensitive elastic member 33 contracts, and the temperature-sensitive elastic member 33 drives the movable valve core 32 to move leftward, and at least part of the movable valve core 32 withdraws from the regulating chamber 314 to increase the caliber of the regulating chamber 314, thereby increasing the flow rate of the fluid at the outlet of the valve 30. The first threshold is greater than the second threshold.

[0041] Exemplarily, the temperature-sensitive elastic part 33 provided in the embodiment of the present application is a spring structure, in which case the expansion of the temperature-sensitive elastic part 33 refers to the elongation of the temperature-sensitive elastic part 33, and the contraction of the temperature-sensitive elastic part 33 refers to the shortening of the temperature-sensitive elastic part 33. The spring structure is made of nickel-titanium alloy, and the corrosion resistance of nickel-titanium alloy is better than that of stainless steel. The specific specifications of the temperature-sensitive elastic part 33 are as follows: the temperature-sensitive elastic part 33 is made of Ti-49Ni-51 alloy, the outer diameter of the temperature-sensitive elastic part 33 is 10 mm, the outer diameter of the spring wire of the temperature-sensitive elastic part 33 is 1 mm, and the number of turns of the temperature-sensitive elastic part 33 is 6 turns. The temperature-sensitive elastic part 33 of the above specifications has a long service life, and the fatigue life of the temperature-sensitive elastic part 33 reaches 1*10 7times, the expansion rate or expansion rate of the temperature-sensitive elastic part 33 is significant, and the expansion rate or expansion rate is above 20%. The first threshold value of the temperature-sensitive elastic part 33 of the above specifications is 40°C, and the second threshold value is 30°C. It should be explained that the fatigue life number of the above-mentioned temperature-sensitive elastic part 33 refers to the number of cyclic stresses that the temperature-sensitive elastic part 33 is subjected to when the temperature-sensitive elastic part 33 produces fatigue failure under a certain load. The expansion rate or expansion rate refers to the ratio of the change in length of the temperature-sensitive elastic part 33 after heat treatment to the original length. In other examples, the temperature-sensitive elastic part 33 can also be of other specifications, and the temperature-sensitive elastic parts 33 of different specifications have at least one difference in the first threshold value, the second threshold value, the expansion rate or the expansion rate. The temperature-sensitive elastic parts 33 of different specifications can be selected according to the actual use of the heat exchange mechanism 200.

[0042] Specifically, the movable valve core 32 is cylindrical, and includes a first surface 323 and a second surface 324 opposite to each other along its axial direction (i.e., the Y-axis direction), and an outer peripheral surface connected between the first surface 323 and the second surface 324. The outer peripheral surface is used to cooperate with the cavity wall surface of the temperature sensing cavity so that the movable valve core 32 can move along the cavity wall surface of the temperature sensing cavity along the Y-axis direction.

[0043] The movable valve core 32 is provided with a first connecting groove 325, a first connecting protrusion 326, a second connecting protrusion 327 and a through hole along the Y-axis direction. The first connecting groove 325 is recessed in the first surface 323, the first connecting protrusion 326 is protruded on the groove bottom surface of the first connecting groove 325, and the second connecting protrusion 327 is protruded on the second surface 324. The through hole penetrates the first connecting protrusion 326 and the second connecting protrusion 327 along the Y-axis direction of the movable valve core 32, and the through hole and the first connecting groove 325 are connected along the axial direction of the movable valve core 32 to form the above-mentioned channel 3211. The first connecting protrusion 326 is used to connect the temperature-sensitive elastic member 33.

[0044] In some embodiments, the valve 30 further includes a first clamping seat 34, which is located on the side of the movable valve core 32 away from the liquid outlet end of the liquid inlet pipe 20, and the two ends of the temperature-sensitive elastic member 33 are respectively connected to the first clamping seat 34 and the movable valve core 32. The connection method between the first clamping seat 34 and the valve body 31 may include but is not limited to one or more combined connections such as integral molding, welding, clamping, bonding, thermal fusion, fastener connection, etc. In other examples, the valve 30 may also omit the first clamping seat 34, and the two ends of the temperature-sensitive elastic member 33 are respectively connected to the valve body 31 and the movable valve core 32.

[0045] Specifically, the first card seat 34 is fixed inside the temperature sensing cavity 313, and the first card seat 34 is located at one end of the first body 311 away from the second body 312. The first card seat 34 includes a blocking cover 341 and a positioning boss 342. The blocking cover 341 is in the shape of a circular plate, and the positioning boss 342 is convexly arranged on the surface of the blocking cover 341. The outer diameter of the positioning boss 342 is smaller than the outer diameter of the blocking cover 341. The blocking cover 341 is fixedly connected to the cavity wall surface of the temperature sensing cavity 313, and there is a gap between the positioning boss 342 and the cavity wall surface of the temperature sensing cavity 313. The blocking cover 341 is used to make the temperature sensing cavity 313 closed to prevent fluid leakage. The positioning boss 342 is used to connect the temperature sensing elastic member 33.

[0046] In some embodiments, the valve 30 also includes a pre-loaded elastic member 36, which is installed inside the valve body 31. The pre-loaded elastic member 36 is installed in the regulating chamber 314. The pre-loaded elastic member 36 is located on the side of the movable valve core 32 away from the temperature-sensitive elastic member 33, and the two ends of the pre-loaded elastic member 36 are respectively connected to the movable valve core 32 and the valve body 31.

[0047] Specifically, the valve 30 further includes a second holder 37, which is fixed inside the temperature sensing chamber 313 and is located at one end of the first body 311 close to the second body 312. The second holder 37 includes a blocking member 371 and a third connecting protrusion 372, the blocking member 371 is fixedly connected to the inner wall surface of the second body 312, and the blocking cover 341 and the blocking member 371 are respectively located at opposite ends of the first body 311. The blocking member 371 is provided with a second connecting groove 3711, and the third connecting protrusion 372 is convexly provided on the groove bottom surface of the second connecting groove 3711. One end of the temperature sensing elastic member 33 is sleeved on the positioning boss 342, and the other end of the temperature sensing elastic member 33 is sleeved on the first connecting protrusion 326. One end of the pre-tightening elastic member 36 is sleeved on the second connecting protrusion 327, and the other end of the pre-tightening elastic member is sleeved on the third connecting protrusion 372.

[0048] The connection method between the second clamping seat 37 and the valve body 31 may include, but is not limited to, one or more combinations of one or more types of connection, such as integral molding, welding, clamping, bonding, thermal fusion, and fastener connection. In other examples, the valve 30 may also omit the second clamping seat 37, and the two ends of the preload elastic member 36 are respectively connected to the valve body 31 and the movable valve core 32.

[0049] The preload elastic member 36 is used to provide a preload force to the movable valve core 32, driving the movable valve core 32 to move and reset. When the temperature of the temperature-sensitive elastic member 33 is higher than the first threshold value, the expansion rate of the temperature-sensitive elastic member 33 is large, and the elastic force provided by the temperature-sensitive elastic member 33 to the movable valve core 32 is large, and it is easy to drive the movable valve core 32 to move to the right. However, when the temperature of the temperature-sensitive elastic member 33 is lower than the second threshold value, the contraction rate of the temperature-sensitive elastic member 33 is small, and the elastic force provided by the temperature-sensitive elastic member 33 to the movable valve core 32 is small, and it is difficult to drive the movable valve core 32 to move to the left. Therefore, when the temperature of the temperature-sensitive elastic member 33 is lower than the second threshold value, the movable valve core 32 can be quickly moved to the initial position by providing a preload force to the movable valve core 32 through the preload elastic member 36.

[0050] The initial position of the movable valve core 32 refers to the position of the movable valve core 32 when the movable valve core 32 is just completely accommodated in the temperature sensing chamber 313; that is, the position of the movable valve core 32 when the second surface 324 of the movable valve core 32 is flush with the wall surface of the regulating chamber 314. When the movable valve core 32 is in the initial position, the resistance provided by the wall of the temperature sensing chamber to the movable valve core 32 and the pre-tightening force provided by the pre-tightening elastic member 36 to the movable valve core 32 are equal in magnitude, and the pre-tightening force provided by the pre-tightening elastic member 36 to the movable valve core 32 is a thrust force, that is, the pre-tightening force provided by the pre-tightening elastic member 36 to the movable valve core 32 is in the left direction, and the resistance provided by the wall of the temperature sensing chamber to the movable valve core 32 is in the right direction, and the movable valve core 32 is stationary in the initial position.

[0051] Of course, the initial position of the movable valve core 32 can also be other positions in the temperature sensing chamber 313 or the regulating chamber 314, as long as the pre-tightening force provided by the pre-tightening elastic member 36 to the movable valve core 32 is equal to the resistance provided by the cavity wall of the temperature sensing chamber to the movable valve core 32, and the pre-tightening force provided by the pre-tightening elastic member 36 to the movable valve core 32 is a thrust force.

[0052] See also Figure 3 and Figure 4When the temperature of the temperature-sensitive elastic member 33 is higher than the first threshold value, the temperature-sensitive elastic member 33 expands, and the elastic force provided by the temperature-sensitive elastic member 33 to the movable valve core 32 is greater than the sum of the resistance provided by the cavity wall of the temperature-sensing cavity to the movable valve core 32 and the preload force provided by the preload elastic member 36 to the movable valve core 32. The temperature-sensitive elastic member 33 drives the movable valve core 32 to move rightward, and at least part of the movable valve core 32 blocks the regulating cavity 314, reducing the caliber of the regulating cavity 314, thereby reducing the flow rate of the regulating cavity 314, and further reducing the flow rate to the liquid outlet of the valve 30. When the temperature of the temperature-sensitive elastic member 33 is lower than the second threshold value, the temperature-sensitive elastic member 33 contracts, and the sum of the elastic force provided by the temperature-sensitive elastic member 33 on the movable valve core 32 and the pre-tightening force provided by the pre-tightening elastic member 36 on the movable valve core 32 equals the resistance provided by the cavity wall of the temperature-sensing cavity to the movable valve core 32. The temperature-sensitive elastic member 33 drives the movable valve core 32 to move left, and at least part of the movable valve core 32 withdraws from the regulating cavity 314, increasing the caliber of the regulating cavity 314, thereby increasing the flow rate of the regulating cavity 314, and further increasing the flow rate to the liquid outlet of the valve 30.

[0053] The preloaded elastic member 36 may be a leaf spring structure, a spring structure or other suitable structures. Exemplarily, the preloaded elastic member 36 provided in the embodiment of the present application is a wire spring. The outer diameter of the preloaded elastic member 36 is 10 mm, the outer diameter of the spring wire of the preloaded elastic member 36 is 0.6 mm, and the number of turns of the preloaded elastic member 36 is 5 turns. In other examples, the preloaded elastic member 36 may also be of other specifications, and preloaded elastic members 36 of different specifications provide different preloaded forces to the movable valve core 32. Preloaded elastic members 36 of different specifications may be selected according to the actual use of the movable valve core 32.

[0054] Please also read Figures 3 to 6 , a flow channel 13 is provided in the housing 10, and the liquid outlet of the valve 30 is connected to the liquid inlet of the flow channel 13. So that the liquid outlet of the valve 30 is connected to the liquid inlet of the flow channel 13. It can be understood that the change of the fluid flow rate in the liquid outlet of the valve 30 and the change of the fluid flow rate in the flow channel 13 are synchronized, that is, when the flow rate of the fluid in the liquid outlet of the valve 30 decreases, the fluid flow rate in the flow channel 13 decreases; when the flow rate of the fluid in the liquid outlet of the valve 30 increases, the fluid flow rate in the flow channel 13 increases. By providing the flow channel 13, the uniformity of the fluid flow can be increased, and the situation of heat exchange failure caused by the local absence of fluid when the housing shakes or tilts can be prevented.

[0055] The housing 10 includes a first housing 11 and a second housing 12 that can be matched and connected to each other. The surface of the first housing 11 facing the second housing 12 is recessed inward to form a first groove 111, and the second housing 12 is recessed inward to form a second groove 121 on one side facing the first housing 11. The first groove 111 and the second groove 121 correspond to each other. When the first housing 11 and the second housing 12 are matched and connected, the groove bottom surface of the first groove 111 and the groove bottom surface of the second groove 121 enclose a flow channel member 13, and the first groove 111 and the second groove 121 are opposite and connected to enclose a flow channel 130. The liquid inlet end of the flow channel member 13 and the liquid outlet end of the flow channel member 13 are connected to the flow channel 130. The liquid outlet end of the valve 30 is connected to the liquid inlet end of the flow channel member 13, and the fluid of the valve 30 enters the flow channel 130 of the housing 10 through the liquid inlet end of the flow channel member 13. The first housing 11 and the second housing 12 are made of a material with good thermal conductivity, preferably aluminum, zinc, nickel, iron or alloy. The connection method between the first shell 11 and the second shell 12 may include but is not limited to welding, clamping, bonding, heat fusion, fastener connection, sealing connection, or a combination of one or more connections.

[0056] See also Figure 1 The heat exchange device 100 further includes a liquid outlet pipe 40, the liquid inlet end of the liquid outlet pipe 40 is connected to the liquid outlet end of the flow channel member 13. The fluid of the housing 10 enters the flow channel member 13 through the liquid inlet pipe 20, and the fluid of the housing 10 is discharged from the flow channel member 13 through the liquid outlet pipe 40.

[0057] The liquid outlet pipe 40 is a tube body with a certain length. The liquid outlet pipe 40 is provided with a second tube cavity extending along its axial direction. The liquid outlet pipe 40 includes a liquid inlet end and a liquid outlet end provided at opposite ends thereof. The liquid inlet end of the liquid outlet pipe 40 is provided with a liquid inlet, and the liquid outlet end of the liquid outlet pipe 40 is provided with a liquid outlet. Both the liquid inlet and the liquid outlet are connected to the second tube cavity. The liquid outlet end of the liquid outlet pipe 40 is connected to the fluid storage component, that is, the fluid of the liquid outlet pipe 40 flows to the fluid storage component, and forms a fluid loop with the liquid inlet pipe 20. The volume of the fluid entering the flow channel component 13 is the same as the volume of the fluid discharged from the flow channel component 13, so that the total volume of the fluid in the flow channel component 13 remains unchanged, and the total volume of the fluid in the fluid storage component can also remain unchanged.

[0058] In some embodiments, see Figure 6The flow channel member 13 includes a first flow channel member 133 and a second flow channel member 134. The liquid inlet end of the first flow channel member 133 is connected to the liquid outlet end of the valve 30, the liquid outlet end of the first flow channel member 133 is connected to the liquid inlet end of the second flow channel member 134, and the liquid outlet end of the second flow channel member 134 is connected to the liquid inlet end of the liquid outlet pipe 40. The first flow channel member 133 and the second flow channel member 134 are arranged in sequence along the width direction of the housing 10. The liquid inlet end of the first flow channel member 133 and the liquid outlet end of the second flow channel member 134 are located on the same side of the housing 10, and the directions of fluid flow in the first flow channel member 133 and the second flow channel member 134 are opposite. Specifically, the liquid inlet end of the first flow channel member 133 is located at its left end, the liquid outlet end of the first flow channel member 133 is located at its right end, the liquid inlet end of the second flow channel member 134 is located at its right end, and the liquid outlet end of the second flow channel member 134 is located at its left end. That is, the fluid in the first flow channel member 133 flows from left to right, and the fluid in the second flow channel member 134 flows from right to left. In this way, the left and right ends of the first flow channel member and the second flow channel member can be aligned, respectively, thereby saving space and reducing the occupied space of the housing 10. The first flow channel member 133 and the second flow channel member 134 can be arranged at intervals or close to each other, which is not limited here.

[0059] In some embodiments, see Figure 6 , the flow channel member 13 includes a plurality of first flow channel members 133 and at least one second flow channel member 134, where a plurality means more than two. The liquid inlet end of each first flow channel member 133 is connected to the liquid outlet end of the valve 30, and the liquid outlet ends of the plurality of first flow channel members 133 are sequentially connected and connected to the liquid inlet end of the second flow channel member 134, and the liquid outlet end of the second flow channel member 134 is connected to the liquid inlet end of the liquid outlet pipe 40. The plurality of first flow channel members 133 and the second flow channel member 134 are sequentially arranged along the width direction of the housing 10; at least part of the first flow channel members 133 are arranged on one side of the second flow channel member 134, and the other part of the first flow channel members 133 are arranged on the other side of the second flow channel member 134; the liquid inlet end of the plurality of first flow channel members 133 and the liquid outlet end of the second flow channel member 134 are located on the same side of the housing 10. The plurality of first flow channel members 133 and the second flow channel member 134 can be arranged at intervals or close to each other, which is not limited here.

[0060] In this example, the flow channel member 13 includes six first flow channel members 133 and two second flow channel members 134. The two second flow channel members 134 are arranged adjacent to each other, and the six first flow channel members 133 are arranged symmetrically relative to the two second flow channel members 134, that is, three first flow channel members 133 are arranged on one side of the two second flow channel members 134, and the other three first flow channel members 133 are arranged on the other side of the two second flow channel members 134. At this time, the flow rate of the fluid flowing through each part of the shell is basically balanced, which can increase the uniformity of heat exchange. In other examples, it can be other numbers of first flow channel members 133 and second flow channel members 134, and the first flow channel member 133 can be symmetrically arranged relative to the second flow channel member 134, or the first flow channel member 133 can be asymmetrically arranged relative to the second flow channel member 134, which is not limited here.

[0061] In some embodiments, see Figure 1 and Figure 6 The liquid inlet pipe 20 includes a main pipe 21 and multiple branch pipes 23. The liquid outlet end of the main pipe 21 is connected to the liquid inlet ends of the multiple branch pipes 23. The liquid outlet end of at least one branch pipe 23 is connected to the liquid inlet end of the first flow channel member 133 through a valve 30, and the liquid outlet ends of the remaining branch pipes 23 are connected to the liquid inlet ends of the first flow channel member 133.

[0062] Specifically, the liquid inlet pipe 20 includes two branch pipes 23, and the first flow channel member 133 includes two outer flow channel members 1331 and a plurality of inner flow channel members 1332, wherein the outer flow channel member 1331 is arranged on opposite sides of the outer shell 10, and the inner flow channel member 1332 is arranged between the two outer flow channel members 1331. One of the two branch pipes 23 is provided with a valve 30, and the liquid outlet end of the valve 30 is connected to the liquid inlet end of the outer flow channel member 1331. The liquid outlet end of the other branch pipe 23 is connected to the liquid inlet end of the plurality of inner flow channel members 1332. It can be understood that as the number of branch pipes 23 increases and the number of outer flow channel members 1331 and inner flow channel members 1332 increases, the heat exchange time of the heat exchange device 100 becomes shorter.

[0063] like Figure 1 As shown, after the first shell 11 and the second shell 12 are assembled, the shell 10 is a stacked rectangular structure, and the heat exchange mechanism 200 is attached to the outer side of the shell 10, that is, the heat exchange mechanism 200 can be attached to the side of the first shell 11 away from the second shell 12, or the heat exchange mechanism 200 can be attached to the side of the second shell 12 away from the first shell 11, or multiple heat exchange mechanisms 200 are respectively attached to the side of the first shell 11 away from the second shell 12 and the side of the second shell 12 away from the first shell 11, and there is no limitation here. It should be understood that the thinner the thickness of the first shell 11 and the second shell 12, the better the heat exchange effect of the heat exchange device 100 on the heat exchange mechanism 200.

[0064] The heat exchange mechanism 200 has a first heat exchange surface 202, and the shell 10 has a second heat exchange surface 102. The second heat exchange surface 102 can be the surface of the first shell 11 facing away from the second shell 12, or it can be the surface of the second shell 12 facing away from the first shell 11. The first heat exchange surface 202 faces the second heat exchange surface 102, and the first heat exchange surface 202 and the second heat exchange surface 102 can be attached to each other. The distance of the shell 10 provided in the embodiment of the present application in the X-axis direction is greater than the distance of the shell 10 in the Z-axis direction, and the distance of the shell 10 in the Y-axis direction is greater than the distance of the shell 10 in the Z-axis direction. The first heat exchange surface 202 and the second heat exchange surface 102 are both parallel to the XOY plane, and when the first heat exchange surface 202 and the second heat exchange surface 102 are attached to each other, the heat exchange mechanism 200 has a maximum heat exchange area relative to the heat exchange device 100. In other examples, the housing 10 is a cylindrical structure, that is, the second heat exchange surface 102 of the housing 10 is a curved surface, the second heat exchange surface 102 of the heat exchange mechanism 200 is a curved surface, the first heat exchange surface 202 faces the second heat exchange surface 102, and the first heat exchange surface 202 and the second heat exchange surface 102 can be attached to each other. Of course, the housing 10 can also be other morphological structures so that the second heat exchange surface 102 of the housing 10 can be more conveniently attached to the second heat exchange surface 102 of the heat exchange mechanism 200, for example, polygonal block, polygonal prism, etc., which are not limited here.

[0065] The aforementioned heat exchange mechanism 200 may be a battery module.

[0066] The embodiment of the present application further provides a battery pack, which includes a battery module and a heat exchange device 100. The battery module is attached to the housing 10 of the heat exchange device 100 so that the temperature of the battery module is maintained within a reasonable temperature range.

[0067] The battery module includes a first operating condition and a second operating condition. Specifically, the first operating condition refers to the battery module being in a charging or discharging state. In the first operating condition, the battery module will release a large amount of heat, and the heat exchange device 100 can cool the battery module, thereby avoiding the battery module current limitation or even thermal runaway. The second operating condition refers to the battery module being in a standby state or in a low temperature environment. The temperature of the battery module in the second operating condition will drop, and the heat exchange device 100 can heat the battery module, thereby improving the performance of the battery module. Whether in the first operating condition or the second operating condition, the heat generation at both ends of the battery module will be significantly higher than the heat generation in the middle. In the first operating condition, it is necessary to increase the cooling flow of the battery module at both ends. However, in the second operating condition, it is necessary to reduce the heating flow of the battery module at both ends. This can prevent the two ends of the battery module from continuing to obtain heat from the heat exchange device 100 when their own heat generation is high, exacerbating the imbalance of temperature rise in different areas of the battery module.

[0068] When the heat exchange device 100 exchanges heat with the battery module, the flow direction of the fluid in the heat exchange device 100 is as follows: the fluid flows to the main pipe of the liquid inlet pipe 20, and the liquid outlet end of the main pipe is connected to the liquid inlet ends of the two branch pipes 23, one of which is provided with a valve 30, and the liquid outlet end of the branch pipe 23 is connected to the liquid inlet end of the valve 30, thereby entering the regulating chamber 314 of the valve 30. Part of the fluid in the regulating chamber 314 flows to the temperature sensing chamber 313, the fluid contacts the temperature sensing elastic member 33 and can change the temperature of the temperature sensing elastic member 33, and another part of the fluid in the regulating chamber 314 flows to the liquid outlet end of the valve 30, and the liquid outlet end of the valve 30 is connected to the liquid inlet ends of the two outer flow channel members 1331. The liquid outlet end of the other branch pipe is connected to the liquid inlet ends of multiple inner flow channel members 1332. The fluid of the two outer flow channel components 1331 and the multiple inner flow channel components 1332 flows from left to right, the liquid outlet ends of the two outer flow channel components 1331 and the multiple inner flow channel components 1332 are connected to the second flow channel component 134, the fluid of the second flow channel component 134 flows from right to left, the liquid outlet end of the second flow channel component 134 is connected to the liquid inlet end of the liquid outlet pipe 40, and the fluid is discharged from the liquid outlet pipe of the liquid outlet pipe 40 out of the shell 10.

[0069] Based on the above-mentioned requirement for the uniform temperature of the battery module, in the first working condition, the temperature of the fluid in the liquid inlet pipe 20 is between 15°C and 25°C, and the temperature of the fluid is lower than the second threshold value, the temperature-sensitive elastic member 33 contracts, and the sum of the elastic force provided by the temperature-sensitive elastic member 33 to the movable valve core 32 and the preload force provided by the preload elastic member 36 to the movable valve core 32 is equal to the resistance provided by the cavity wall of the temperature-sensitive cavity to the movable valve core 32, and the temperature-sensitive elastic member 33 drives the movable valve core 32 to move to the left, and at least part of the movable valve core 32 withdraws from the regulating cavity 314, increasing the caliber of the regulating cavity 314, thereby increasing the flow rate of the regulating cavity 314, and then increasing the flow rate to the liquid outlet of the valve 30. The two outer flow channel members 1331 are close to the two ends of the battery module, and the two ends of the battery module generate more heat. The flow rate of the fluid in the two outer flow channel members 1331 close to the two ends of the battery module increases, and the flow rate of the multiple inner flow channel members 1332 far away from the two ends of the battery module remains unchanged, which meets the requirement for the uniform temperature of the battery module in the first working condition.

[0070] In the second working condition, the temperature of the fluid in the liquid inlet pipe 20 is greater than or equal to 40°C, and the fluid temperature is higher than the first threshold value. The temperature-sensitive elastic member 33 expands, and the elastic force provided by the temperature-sensitive elastic member 33 to the movable valve core 32 is greater than the sum of the resistance provided by the cavity wall of the temperature-sensitive cavity to the movable valve core 32 and the preload force provided by the preload elastic member 36 to the movable valve core 32. The temperature-sensitive elastic member 33 drives the movable valve core 32 to move rightward, and at least part of the movable valve core 32 blocks the regulating cavity 314, reducing the caliber of the regulating cavity 314, thereby reducing the flow of the regulating cavity 314, and further reducing the flow to the liquid outlet of the valve 30. The temperature of the two ends of the two outer flow channel members 1331 close to the battery module slowly decreases to a reasonable temperature range. The two outer flow channel components 1331 are close to the two ends of the battery module, where more heat is generated. The flow rate of the fluid in the two outer flow channel components 1331 close to the two ends of the battery module is reduced, while the flow rate of the multiple inner flow channel components 1332 away from the two ends of the battery module remains unchanged, thereby meeting the temperature uniformity requirements of the battery module under the second working condition.

[0071] In the battery pack provided in the embodiment of the present application, the valve 30 can adaptively adjust the size of the fluid flow rate according to the temperature of the fluid, taking into account the different flow distribution requirements of different working conditions. The main driving factor of the valve 30 is the fluid temperature, and there is no need to establish a complex external mechanical or electromagnetic circuit for control, which simplifies the structure and opens up the design idea of ​​heat exchange of the battery pack.

[0072] The embodiment of the present application also provides a vehicle, which includes a mechanism housing, a variety of electronic devices and a battery pack. The mechanism housing includes a metal bracket, a connecting plate, a fastener, etc. The mechanism housing plays a role of supporting, resisting mechanical shock, and resisting mechanical vibration. The mechanism housing includes an inner cavity, and the inner cavity is used to install a variety of electronic devices and a battery pack. The battery pack provides power for a variety of electronic devices for use by the electronic devices.

[0073] In the description of the embodiments of the present application, it should be noted that the orientation or positional relationship of terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inside" and "outside" are based on the orientation or positional relationship described in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or original referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0074] What is disclosed above is only a preferred embodiment of the present application, and it certainly cannot be used to limit the scope of the claims of the present application. A person of ordinary skill in the art can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present application still fall within the scope covered by the present application.

Claims

1. A heat exchange device, characterized in that: The heat exchange device comprises a shell, a liquid inlet pipe and a valve; A flow channel member is provided in the housing, the liquid inlet pipe is connected to the flow channel member through the valve, the liquid inlet end of the valve is connected to the liquid outlet end of the liquid inlet pipe, and the liquid outlet end of the valve is connected to the liquid inlet end of the flow channel member; The valve comprises a valve body, a movable valve core and a temperature-sensitive elastic member, wherein the movable valve core and the temperature-sensitive elastic member are installed inside the valve body, and two ends of the temperature-sensitive elastic member are respectively connected to the movable valve core and the valve body, and the movable valve core comprises a channel member, and the fluid in the liquid inlet pipe contacts the temperature-sensitive elastic member through the channel member to change the temperature of the temperature-sensitive elastic member; The temperature-sensitive elastic member is used to provide elastic force to the movable valve core, driving the movable valve core to move relative to the valve body to change the caliber of the valve body, thereby changing the flow rate of the fluid in the flow channel member.

2. The heat exchange device according to claim 1, characterized in that: When the temperature of the temperature-sensitive elastic member is higher than a first threshold value, the temperature-sensitive elastic member expands, the temperature-sensitive elastic member drives the movable valve core to move, and the caliber of the valve body decreases to reduce the flow rate of the fluid in the flow channel member; when the temperature of the temperature-sensitive elastic member is lower than a second threshold value, the temperature-sensitive elastic member contracts, the temperature-sensitive elastic member pulls the movable valve core to move, and the caliber of the valve body increases to increase the flow rate of the fluid in the flow channel member; the first threshold value is greater than the second threshold value.

3. The heat exchange device according to claim 1, characterized in that: The valve also includes a first holder, which is fixed inside the valve body and located on a side of the movable valve core away from the liquid outlet end of the liquid inlet pipe. Both ends of the temperature-sensitive elastic member are respectively connected to the first holder and the movable valve core.

4. The heat exchange device according to claim 3, characterized in that: The first holder includes a blocking cover and a positioning boss. The positioning boss is convexly arranged on the surface of the blocking cover. The blocking cover is fixedly connected to the valve body to block the valve body. The positioning boss is connected to the temperature-sensitive elastic member.

5. The heat exchange device according to claim 1, characterized in that: The valve also includes a pre-tightening elastic member, which is installed inside the valve body. The pre-tightening elastic member is located on the side of the movable valve core away from the temperature-sensitive elastic member, and the two ends of the pre-tightening elastic member are respectively connected to the movable valve core and the valve body; the pre-tightening elastic member is used to provide a pre-tightening force to the movable valve core to drive the movable valve core to move and reset.

6. The heat exchange device according to claim 5, characterized in that: The valve also includes a second holder, which is fixedly connected to the valve body and located on a side of the movable valve core facing the liquid outlet end of the liquid inlet pipe. Both ends of the preloaded elastic member are respectively connected to the second holder and the movable valve core.

7. The heat exchange device according to claim 1, characterized in that: The heat exchange device further comprises a liquid outlet pipe, wherein a liquid inlet end of the liquid outlet pipe is connected to a liquid outlet end of the flow channel member.

8. The heat exchange device according to claim 7, characterized in that: The flow channel member includes a first flow channel member and a second flow channel member, the liquid inlet end of the first flow channel member is connected to the liquid outlet end of the valve, the liquid outlet end of the first flow channel member is connected to the liquid inlet end of the second flow channel member, and the liquid outlet end of the second flow channel member is connected to the liquid inlet end of the liquid outlet pipe.

9. The heat exchange device according to claim 8, characterized in that: The first flow channel member and the second flow channel member are arranged in sequence along the width direction of the shell, and the liquid inlet end of the first flow channel member and the liquid outlet end of the second flow channel member are located on the same side of the shell.

10. The heat exchange device according to claim 7, characterized in that: The flow channel component includes multiple first flow channel components and at least one second flow channel component. The liquid inlet end of each of the first flow channel components is connected to the liquid outlet end of the valve. The liquid outlet ends of the multiple first flow channel components are connected in sequence and connected to the liquid inlet end of the second flow channel component. The liquid outlet end of the second flow channel component is connected to the liquid outlet pipe.

11. The heat exchange device according to claim 10, characterized in that: A plurality of the first flow channel components and the second flow channel components are arranged in sequence along the width direction of the shell; at least part of the first flow channel components are arranged on one side of the second flow channel component, and the other part of the first flow channel components are arranged on the other side of the second flow channel component; the liquid inlet ends of the plurality of the first flow channel components and the liquid outlet ends of the second flow channel components are located on the same side of the shell.

12. A battery pack, characterized in that: The battery pack includes a battery module and the heat exchange device according to any one of claims 1 to 11, the battery module is abutted against the shell of the heat exchange device; the battery module includes a first operating condition and a second operating condition, the heat exchange device cools the battery module when the battery module is in the first operating condition; the heat exchange device heats the battery module when the battery module is in the second operating condition.

13. A vehicle, characterized in that: The vehicle includes a mechanism housing and the battery pack according to claim 12, wherein the battery pack is installed in the mechanism housing.

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