Heat exchange device, power battery and vehicle

Abstract

The utility model relates to a heat exchange device, a power battery and a vehicle. The heat exchange device is used for adjusting the temperature of a battery module. The heat exchange device comprises a first base body and a second base body, wherein the first base body is configured to exchange heat with the battery module in a first direction; the second base body is configured to exchange heat with the battery module in a second direction; wherein the first direction is intersected with the second direction. According to the heat exchange device provided by the embodiment of the invention, the first base body and the second base body are arranged, so that the heat exchange device can exchange heat with the battery module from different directions, the heat exchange area between the heat exchange device and the battery cell unit is increased, and the temperature adjusting effect of the battery module is improved.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to a heat exchange device, a power battery, and a vehicle. Background Technology

[0002] Currently, the electrochemical reactions during battery charging and discharging can only occur within a specific temperature range. Low or high temperatures can severely affect the charging and discharging performance of batteries.

[0003] In related technologies, the temperature regulation scheme for battery modules involves setting a heat exchange device (such as a direct cooling plate or heating film) on one side of the battery module surface. However, this heat exchange scheme has a single heat exchange direction and poor temperature regulation effect on the battery module. Utility Model Content

[0004] This application provides a heat exchange device to at least partially solve the above-mentioned technical problems.

[0005] To achieve the above objectives, according to a first aspect of this application, a heat exchange device is provided for regulating the temperature of a battery module; the heat exchange device includes:

[0006] A first substrate is configured to exchange heat with the battery module in a first direction;

[0007] The second substrate is configured to exchange heat with the battery module in the second direction;

[0008] Wherein, the first direction intersects with the second direction.

[0009] Optionally, in some embodiments of this application, in a projection plane perpendicular to the first direction, the projection of the first substrate at least partially overlaps with the projection of the battery module;

[0010] In a projection plane perpendicular to the second direction, the projection of the second substrate at least partially overlaps with the projection of the battery module.

[0011] Optionally, in some embodiments of this application, the battery module includes at least two battery cell units stacked in the second direction;

[0012] The heat exchange device includes a plurality of second substrates, which are spaced apart in the second direction so that the battery cell is located between two second substrates.

[0013] Optionally, in some embodiments of this application, a plurality of second substrates are respectively connected to the first substrate, so that the plurality of second substrates and the first substrate constitute a whole.

[0014] Optionally, in some embodiments of this application, the second substrate and the first substrate surround a receiving space, so that at least a portion of the battery cell is enclosed in the receiving space.

[0015] Optionally, in some embodiments of this application, the plurality of accommodating spaces are spaced apart in the second direction.

[0016] Optionally, in some embodiments of this application, the first substrate has a first working fluid channel for the flow of heat exchange working fluid, and the second substrate has a second working fluid channel for the flow of heat exchange working fluid, wherein the first working fluid channel and the second working fluid channel extend in a third direction respectively;

[0017] The third direction intersects with the second direction and the first direction, respectively.

[0018] Optionally, in some embodiments of this application, the first working medium channel is connected to the second working medium channel.

[0019] Optionally, in some embodiments of this application, the heat exchange device further includes:

[0020] A turbulent fluid is used to agitate the heat exchange medium in the first working medium channel and / or the second working medium channel.

[0021] The first working medium channel and / or the second working medium channel are provided with the turbulent fluid.

[0022] Optionally, in some embodiments of this application, the heat exchange device further includes:

[0023] A flow divider is used to divide the heat exchange working fluid input from the working fluid source equipment into the first substrate and the second substrate;

[0024] The diverter is connected to the liquid inlet side of the first substrate and the second substrate.

[0025] Optionally, in some embodiments of this application, the first substrate has a first working fluid channel for the flow of heat exchange working fluid, and the second substrate has a second working fluid channel for the flow of heat exchange working fluid.

[0026] The diverter has the following features:

[0027] The first cavity is connected to the first working medium channel and the second working medium channel, respectively.

[0028] Optionally, in some embodiments of this application, the diverter further comprises:

[0029] Multiple diversion ports are used to input the heat exchange working fluid in the first cavity into the first working fluid channel and the second working fluid channel from different positions;

[0030] The plurality of the diversion ports are respectively connected to the first cavity, and a portion of the diversion ports are spaced apart along a first direction, while the other portion of the diversion ports are spaced apart along a second direction.

[0031] Optionally, in some embodiments of this application, the diverter further comprises:

[0032] Multiple inlets are spaced apart along the second direction so that the heat exchange medium can be input into the first cavity from different positions in the second direction;

[0033] The multiple input ports are respectively connected to the first cavity.

[0034] Optionally, in some embodiments of this application, the heat exchange device further includes:

[0035] The first connector is used to form a connection between the diverter and the working fluid source device;

[0036] The first connector is fixedly connected to the diverter.

[0037] Optionally, in some embodiments of this application, the heat exchange device further includes:

[0038] A manifold is used to combine the heat exchange working fluid output from the first substrate and the second substrate to the working fluid source device;

[0039] The manifold is connected to the liquid outlet side of the first substrate and the second substrate.

[0040] Optionally, in some embodiments of this application, the first substrate has a first working fluid channel for the flow of heat exchange working fluid, and the second substrate has a second working fluid channel for the flow of heat exchange working fluid.

[0041] The busbar has the following features:

[0042] The second cavity is connected to the first working medium channel and the second working medium channel, respectively.

[0043] Optionally, in some embodiments of this application, the bus further comprises:

[0044] Multiple manifolds are used to output the heat exchange working fluid in the first working fluid channel and the second working fluid channel from different positions to the second cavity;

[0045] The plurality of the manifolds are respectively connected to the second cavity, and a portion of the manifolds are spaced apart along the first direction, while the other portion of the manifolds are spaced apart along the second direction.

[0046] Optionally, in some embodiments of this application, the bus further comprises:

[0047] Multiple output ports are spaced apart along the second direction to output the heat exchange medium in the second cavity from different positions in the second direction;

[0048] The multiple output ports are respectively connected to the second cavity.

[0049] Optionally, in some embodiments of this application, the heat exchange device further includes:

[0050] The second connector is used to form a connection between the manifold and the working fluid source device;

[0051] The second connector is fixedly connected to the manifold.

[0052] According to a second aspect of this application, a power battery is provided, including a battery module and a heat exchange device as described above.

[0053] Optionally, in some embodiments of this application, the power battery includes:

[0054] A heating module for heating the battery module, the heating module including at least one of the heat exchange devices;

[0055] A cooling module for cooling the battery module, the cooling module including at least one of the aforementioned heat exchange devices;

[0056] At least a portion of the battery module is located between the heating module and the cooling module.

[0057] Optionally, in some embodiments of this application, the cooling module is configured to communicate with the vehicle's air conditioning system so that the refrigerant in the air conditioning system exchanges heat with the battery module when passing through the first substrate and the second substrate in the cooling module.

[0058] Optionally, in some embodiments of this application, the first substrate and the second substrate in the cooling module are respectively connected to the outlet of the compressor of the air conditioning system.

[0059] Optionally, in some embodiments of this application, the heating module is configured to communicate with the vehicle's engine cooling system so that the coolant in the engine cooling system exchanges heat with the battery module as it passes through the first substrate and the second substrate in the heating module.

[0060] Optionally, in some embodiments of this application, the first substrate and the second substrate in the heating module are respectively connected to the liquid outlet of the engine cooling system.

[0061] Optionally, in some embodiments of this application, the power battery further includes:

[0062] A return pipe is connected between the output and input ends of the cooling module to guide a portion of the coolant output from the output end to the input end.

[0063] Optionally, in some embodiments of this application, the power battery further includes:

[0064] Thermally conductive adhesive is disposed between the first substrate and / or the second substrate of the heat exchange device and the battery module.

[0065] Optionally, in some embodiments of this application, the heat exchange device further includes:

[0066] A flow divider is used to divide the heat exchange working fluid input from the working fluid source equipment into the first substrate and the second substrate;

[0067] The shunt component also has a first positioning groove on the side facing the battery module, and the power battery further includes:

[0068] A first positioning element, one end of which is embedded in a first positioning groove in the heating module, and the other end of which is embedded in a first positioning groove in the cooling module.

[0069] Optionally, in some embodiments of this application, the heat exchange device further includes:

[0070] A manifold is used to combine the heat exchange working fluid output from the first substrate and the second substrate to the working fluid source device;

[0071] The busbar component also has a second positioning groove on the side facing the battery module, and the power battery further includes:

[0072] The second positioning member has one end embedded in the second positioning groove in the heating module and the other end embedded in the second positioning groove in the cooling module.

[0073] Optionally, in some embodiments of this application, the second base of the heating module and the second base of the cooling module are disposed opposite to each other in a second direction;

[0074] The power battery also includes:

[0075] An isolation element is disposed between the second base of the heating module and the second base of the cooling module.

[0076] Optionally, in some embodiments of this application, the battery module includes at least two battery cell units stacked in the second direction;

[0077] The second base of the heating module and the second base of the cooling module are staggered in a second direction, and in a projection plane perpendicular to the second direction, the projection of the second base of the heating module and the projection of the second base of the cooling module at least partially overlap, so that at least a portion of the battery cell is located between the second base of the heating module and the second base of the cooling module.

[0078] Optionally, in some embodiments of this application, the second base of the heating module extends to contact the first base of the cooling module;

[0079] And / or the second base of the cooling module extends to contact the first base of the heating module.

[0080] According to a third aspect of this application, a vehicle is also provided, including the heat exchange device as described above, or the power battery as described above.

[0081] In the heat exchange device of this application embodiment, by setting a first substrate and a second substrate, the heat exchange device can exchange heat with the battery module from different directions, thereby increasing the heat exchange area between the heat exchange device and the cell unit and improving the temperature regulation effect of the battery module.

[0082] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0083] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0084] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0085] Figure 1 This is a schematic diagram of the overall structure of the power battery provided in an exemplary embodiment of this application;

[0086] Figure 2 This is an exploded view of the power battery provided in an exemplary embodiment of this application;

[0087] Figure 3 yes Figure 2An enlarged schematic diagram of part A in the middle;

[0088] Figure 4 yes Figure 2 Enlarged schematic diagram of part B in the middle;

[0089] Figure 5 This is a schematic diagram of the structure of the shunt and the first connector in the power battery provided in an exemplary embodiment of this application;

[0090] Figure 6 This is an internal cross-sectional view of the first heating module and cooling module in the power battery provided in the exemplary embodiment of this application, in cooperation with the cell unit;

[0091] Figure 7 This is an internal cross-sectional view of the second heating module and cooling module in the power battery provided in the exemplary embodiment of this application;

[0092] Figure 8 This is a schematic diagram showing the flow direction of the heat exchange medium in the heating module and cooling module of the power battery provided in an exemplary embodiment of this application.

[0093] Figure 9 This is a schematic diagram illustrating the connection relationship between the power battery, the air conditioning system, and the engine cooling system, provided in an exemplary embodiment of this application.

[0094] Figure 10 This is another structural schematic diagram illustrating the connection relationship between the power battery, the air conditioning system, and the engine cooling system, provided in an exemplary embodiment of this application;

[0095] Figure 11 This is a schematic diagram of the overall structure of the vehicle provided in an exemplary embodiment of this application.

[0096] Explanation of reference numerals in the attached figures:

[0097] 100. Heat exchange device;

[0098] 110. First matrix; 111. First working fluid channel; 120. Second matrix; 121. Second working fluid channel;

[0099] 100a. Accommodation space;

[0100] 170. Turbulent fluid;

[0101] 130. Diverter; 131. Diverter port; 132. Input port; 133. First positioning slot;

[0102] 140. Busbar;

[0103] 150, First connector; 160, Second connector;

[0104] 10. Power battery;

[0105] 210. Battery module; 211. Battery cell unit;

[0106] 10a. Heating module; 10b. Cooling module;

[0107] 220. Return piping;

[0108] 230. First positioning component; 240. Second positioning component;

[0109] 250. Isolation components;

[0110] 1. Vehicles;

[0111] 20. Air conditioning system; 21. Compressor;

[0112] 30. Engine cooling system; 31. Water pump; 32. High-temperature radiator;

[0113] 41. High-pressure pipe; 42. Low-pressure pipe;

[0114] 43. Inlet pipe; 44. Outlet pipe. Detailed Implementation

[0115] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0116] According to the first aspect of this application, referring to Figures 1 to 3 , Figure 6 This application provides a heat exchange device 100 for regulating the temperature of a battery module 210.

[0117] It is understood that the battery module 210 can be composed of at least two battery cells 211 connected in series or in parallel, or the battery module 210 can also be a module composed of a single battery cell 211.

[0118] The cell unit 211 is the smallest unit in the battery module 210 that stores and releases energy. In this application, the cell unit 211 can be a square cell.

[0119] Because the thermal resistance of the cell unit 211 is relatively large, the internal heat conduction of the battery module 210 is not ideal, especially for the battery module 210 which is higher in the first direction. If heat exchange is only performed on the upper or lower side of the battery module 210, the temperature difference between the upper and lower sides will be too large, which will not meet the cooling or heating rate requirements.

[0120] The first direction indicated in this application, representing the up and down direction, is merely for the convenience of describing specific embodiments of this application. There is no absolute correspondence between the first direction and the up and down direction; similarly, there is no absolute correspondence between the second direction and the left and right direction, and between the third direction and the front and back direction. Furthermore, the first, second, and third directions in this application are only used to express relative positional relationships; they merely indicate approximate locations, not absolute geometric relationships.

[0121] In some embodiments, refer to Figure 2 , Figure 3 and Figure 6 The heat exchange device 100 includes a first substrate 110 and a second substrate 120.

[0122] The first substrate 110 is configured to exchange heat with the battery module 210 in a first direction; the second substrate 120 is configured to exchange heat with the battery module 210 in a second direction; the first direction and the second direction intersect.

[0123] It is understood that the first substrate 110 and the second substrate 120 can be in direct contact with the battery cell 211 or transfer heat through a heat-conducting medium. The first direction and the second direction can be inclined to intersect or perpendicular to each other.

[0124] For example, the first substrate 110 corresponds to the upper or lower side of the battery module 210, while the second substrate 120 corresponds to the left or right side of the battery module 210 as a whole. Alternatively, the second substrate 120 may also correspond to the left or right side of each cell unit 211 in the battery module 210.

[0125] In the heat exchange device of this application embodiment, by setting a first substrate 110 and a second substrate 120, the heat exchange device 100 can exchange heat with the battery module 210 from different directions, thereby increasing the heat exchange area between the heat exchange device 100 and the cell unit 211 and improving the temperature regulation effect of the battery module 210.

[0126] In some specific embodiments, the first substrate 110 and the second substrate 120 can exchange heat with the battery module 210 by directly generating heat. For example, the first substrate 110 and the second substrate 120 are respectively provided with heating films; the first substrate 110 and the second substrate 120 can also exchange heat with the battery module 210 by passing a heat exchange medium.

[0127] In some embodiments, refer to Figure 2 , Figure 3 and Figure 6In a projection plane perpendicular to the first direction, the projection of the first substrate 110 at least partially overlaps with the projection of the battery module 210; and in a projection plane perpendicular to the second direction, the projection of the second substrate 120 at least partially overlaps with the projection of the battery module 210.

[0128] In this design, compared to the first substrate 110, the second substrate 120 is positioned relatively closer in the first direction to the side of the battery module 210 away from the first substrate 110. Heat exchange between the second substrate 120 and the battery module 210 is achieved in the second direction, reducing the heat transfer distance in the first direction and further improving heat exchange efficiency. This improved heat exchange efficiency keeps each battery module 210 within a suitable temperature range, thereby enhancing the safety performance of the battery module 210.

[0129] In some embodiments, refer to Figure 2 , Figure 3 and Figure 6 The battery module 210 includes at least two battery cell units 211 stacked in a second direction.

[0130] The heat exchange device 100 includes a plurality of second substrates 120, which are spaced apart in a second direction so that the battery cell 211 is located between two second substrates.

[0131] By adopting this scheme, the heat exchange device 100 adjusts the temperature of each cell unit 211 to regulate the overall temperature of the battery module 210, thereby increasing the heat exchange area with each cell unit 211 and further improving the heat exchange efficiency.

[0132] In some embodiments, refer to Figure 2 , Figure 3 and Figure 6 Multiple second substrates 120 are respectively connected to the first substrate 110 so that the multiple second substrates 120 and the first substrate 110 form a whole.

[0133] It is understandable that the second substrate 120 and the first substrate 110 can be connected by welding, snap-fitting or integral molding.

[0134] By adopting this scheme, multiple second substrates 120 are connected to the first substrate 110 as a whole, so that the first substrate 110 and the second substrate 120 can not only exchange heat with the cell unit 211, but also increase the overall structural strength of the battery module.

[0135] In some embodiments, refer to Figure 2 , Figure 3 and Figure 6The second substrate 120 and the first substrate 110 are provided with a receiving space 100a so that at least a portion of the battery cell 211 is enclosed in the receiving space 100a.

[0136] For example, two adjacent second substrates 120 and the first substrate 110 form a U-shaped receiving space 100a, that is, the second substrates 120 are inserted between adjacent battery cells 211. The whole formed by the two second substrates 120 and the first substrate 110 wraps three sides of the battery cell 211, so that the heat exchange device 100 can exchange heat with the battery cell 211 on three sides at the same time.

[0137] This approach not only increases the heat exchange area between the heat exchange device 100 and the battery cell 211, allowing for heat exchange from the top or bottom, as well as both sides, thus improving heat exchange efficiency and temperature uniformity of the battery cell 211, but also facilitates the assembly of the heat exchange device 100 and the battery module.

[0138] In some embodiments, refer to Figure 2 , Figure 3 and Figure 6 Multiple accommodating spaces 100a are spaced apart in the second direction.

[0139] It is understood that two adjacent cell units 211 share a second substrate 120 to avoid the setting of the second substrate 120 affecting the energy density of the power battery 10; or, each cell unit 211 can be configured with a first substrate 110 and a second substrate 120 separately, that is, two second substrates 120 can be set between two adjacent cell units 211 to further improve the heat exchange capacity.

[0140] In some embodiments, refer to Figure 2 , Figure 3 and Figure 6 The first substrate 110 has a first working medium channel 111 for the flow of heat exchange working medium, and the second substrate 120 has a second working medium channel 121 for the flow of heat exchange working medium. The first working medium channel 111 and the second working medium channel 121 extend along a third direction, respectively; wherein the third direction intersects with the second direction and the first direction, respectively.

[0141] It is understandable that the first working medium channel 111 and the second working medium channel 121 can be connected to each other or be independent of each other.

[0142] By adopting this scheme, by extending the first working fluid channel 111 and the second working fluid channel 121 in the forward and backward directions respectively, it is ensured that the first substrate 110 and the second substrate 120 maintain a relatively uniform heat exchange effect with the cell unit 211 in the second direction and the first direction.

[0143] Due to the arrangement of the second substrate, a larger heat exchange area is obtained. On the cross section perpendicular to the third direction, the first working fluid channel 111 and the second working fluid channel 121 have sufficient flow area, which can avoid the situation where the heat exchange capacity of the working fluid is insufficient in the tail section of the first working fluid channel 111 and the second working fluid channel 121. For example, when the amount of refrigerant is insufficient, the front section of the first working fluid channel 111 and the second working fluid channel 121 may have been fully converted into superheated steam.

[0144] In some embodiments, refer to Figure 2 , Figure 3 and Figure 6 The first working medium channel 111 is connected to the second working medium channel 121.

[0145] It is understandable that the first working medium channel 111 and the second working medium channel 121 are both connected along the third direction extension path.

[0146] In some embodiments, refer to Figure 2 , Figure 3 and Figure 6 The heat exchange device 100 also includes a turbulent fluid 170. The turbulent fluid 170 is provided in the first working fluid channel 111, and the turbulent fluid 170 is used to agitate the heat exchange working fluid in the first working fluid channel 111.

[0147] For example, the turbulent fluid 170 extends along a third direction, and the cross-sectional shape of the turbulent fluid 170 can be semi-circular, polygonal, etc.

[0148] By adopting this scheme, the contact area between the first substrate 110 and the heat exchange medium is increased through the setting of the turbulent fluid 170, thereby improving the heat exchange performance of the first substrate 110 and achieving higher heat exchange efficiency. At the same time, the setting of the turbulent fluid 170 also enhances the structural strength of the first substrate 110.

[0149] In some embodiments, refer to Figure 2 , Figure 3 and Figure 6 A turbulent fluid 170 is provided in the second working fluid channel 121 to agitate the heat exchange working fluid in the second working fluid channel 121.

[0150] For example, the turbulent fluid 170 extends along a third direction, and the cross-sectional shape of the turbulent fluid 170 can be semi-circular, polygonal, etc.

[0151] By adopting this scheme, the contact area between the first substrate 110 and the heat exchange medium is increased through the setting of the turbulent fluid 170, thereby improving the heat exchange performance of the first substrate 110 and achieving higher heat exchange efficiency. At the same time, the setting of the turbulent fluid 170 also enhances the structural strength of the first substrate 110.

[0152] In some embodiments, refer to Figure 2 and Figure 5 The heat exchange device 100 also includes a flow divider 130. The flow divider 130 is connected to the liquid inlet side of the first substrate 110 and the second substrate 120.

[0153] The diverter 130 is used to divert the heat exchange working medium input from the working medium source device to the first substrate 110 and the second substrate 120; that is, the diverter 130 diverts the heat exchange working medium to the first working medium channel and the second working medium channel, so that the first working medium channel and the second working medium channel obtain a more uniform input.

[0154] For example, the working fluid source device can be a device that outputs the heat exchange working fluid, such as compressor 21, water pump 31, etc.

[0155] In some embodiments, the diverter 130 has a first cavity (not shown). The first cavity is connected to a first working fluid channel 111 and a second working fluid channel 121.

[0156] For example, the first cavity is the internal interlayer space of the diverter 130, and the first cavity extends as a whole along the second direction, so that the first cavity corresponds to the first working medium channel 111 and the plurality of second working medium channels 121.

[0157] With this scheme, the heat exchange medium of the input diverter 130 can be filled into the first space by setting the first cavity, so as to be evenly distributed to the first working medium channel 111 and the second working medium channel 121.

[0158] In some embodiments, refer to Figure 2 and Figure 4 The diversion component 130 also has a diversion port 131.

[0159] Multiple flow dividers 131 are provided, which are used to input the heat exchange working fluid in the first cavity into the first working fluid channel 111 and the second working fluid channel 121 from different positions. Among them, the multiple flow dividers 131 are respectively connected to the first cavity, and some of the flow dividers 131 are spaced apart along the second direction, while others are spaced apart along the first direction.

[0160] By adopting this scheme, the heat exchange medium can be uniformly introduced into the first working medium channel 111 and the second working medium channel 121 in the second direction through the setting of the diversion port 131, while ensuring that the heat exchange medium can be uniformly introduced into the second working medium channel 121 in the first direction, thereby further improving the heat exchange uniformity in different directions.

[0161] In some embodiments, refer to Figure 2 and Figure 5The diverter 130 also has an inlet 132. Multiple inlets 132 are provided, and the multiple inlets 132 are respectively connected to the first cavity. The multiple inlets 132 are spaced apart along the second direction so that the heat exchange medium is input into the first cavity from different positions in the second direction.

[0162] By setting multiple inlets 132, the heat exchange medium entering from the inlets 132 can be quickly dispersed in the second direction.

[0163] In some embodiments, refer to Figure 1 , Figure 2 and Figure 5 The heat exchange device 100 further includes a first connector 150. The first connector 150 is fixedly connected to the flow divider 130 and is used to form a connection between the flow divider 130 and the working fluid source device.

[0164] For example, the first connector 150 is connected to the working fluid source device via a pipeline.

[0165] In some embodiments, the heat exchange device 100 further includes a manifold 140. The manifold 140 is connected to the liquid outlet side of the first substrate 110 and the second substrate 120.

[0166] The manifold 140 is used to collect the heat exchange working fluid output from the first substrate 110 and the second substrate 120 to the working fluid source device; that is, the manifold 140 collects the heat exchange working fluid in the first working fluid channel and the second working fluid channel to facilitate output.

[0167] In some embodiments, the manifold 140 has a second cavity (not shown). The second cavity is connected to the first working fluid channel 111 and the second working fluid channel 121, respectively.

[0168] For example, the second cavity is the internal interlayer space of the manifold 140, and the second cavity extends as a whole along the second direction, so that the second cavity corresponds to the first working medium channel 111 and the plurality of second working medium channels 121.

[0169] With this approach, the second cavity is designed to collect the heat exchange medium from the first working medium channel 111 and the multiple second working medium channels 121, and then output them together.

[0170] In some embodiments, the manifold 140 further includes a manifold port (not shown).

[0171] Multiple manifolds are provided, which are used to output the heat exchange working fluid in the first working fluid channel 111 and the second working fluid channel 121 from different positions to the second cavity; wherein, the multiple manifolds are respectively connected to the second cavity, and a portion of the manifolds are spaced apart along the second direction, while the other portion of the manifolds are spaced apart along the first direction.

[0172] With this scheme, the heat exchange medium can be uniformly output from the first working medium channel 111 and multiple second working medium channels 121 in both the second and first directions by setting the manifold.

[0173] In some embodiments, the manifold 140 further includes an output port (not shown). Multiple output ports are provided, each communicating with a second cavity, and the multiple output ports are spaced apart along a second direction to output the heat exchange medium in the second cavity from different positions along the second direction.

[0174] By setting multiple output ports, the heat exchange medium in the second cavity can be output uniformly in the second direction.

[0175] In some specific implementations, the manifold 140 and the diverter 130 have the same structure, except that the flow direction of the heat exchange medium is different.

[0176] In some embodiments, refer to Figure 1 and Figure 2 The heat exchange device 100 further includes a second connector 160. The second connector 160 is fixedly connected to the manifold 140 and is used to form a connection between the manifold 140 and the working fluid source device.

[0177] For example, the second connector 160 is connected to another different working fluid source device via a conduit.

[0178] Figure 8 The approximate flow direction of the heat exchange medium in the heat exchange device 100 is shown. For ease of observation, only the flow direction of the heat exchange medium in one of the first substrates 110 and the two adjacent second substrates 120, as well as the flow direction in the first connector 150, the manifold, and the second connector are shown.

[0179] In some specific implementation methods, refer to Figure 8 The heat exchange medium enters from the first connector 150 and enters the first cavity through the inlet 132 of the diverter 130. It is dispersed in the first cavity, and then the heat exchange medium in the first cavity enters the first working medium channel 111 and the second working medium channel 121 through the diverter 131 respectively. During the flow of the heat exchange medium in the first working medium channel 111 and the second working medium channel 121, it exchanges heat with the battery cell unit 211. Then, it enters the second cavity through the confluence port of the junction 140 and converges along the second cavity to the outlet port, and then is output through the second connector 160.

[0180] Reference Figure 1 , Figure 2 and Figure 6A power battery 10 is provided. As a core component of an electric vehicle, the performance of the power battery 10 during operation affects the vehicle's power and safety. The power battery 10 includes a battery module 210 and a heat exchange device 100 as described above.

[0181] It is understood that a heat exchange device 100 can be provided on the upper or lower side of the battery module 210, which only performs heating or cooling of the battery module 210. Alternatively, heat exchange devices 100 can be provided on the upper and lower sides of the battery module 210 respectively, with one heat exchange device used for heating the battery module 210 and the other heat exchange device 100 used for cooling the battery module 210; of course, the two heat exchange devices 100 can also be used to achieve the same function, for example, both used for cooling the battery module 210.

[0182] In some embodiments, refer to Figure 1 , Figure 2 and Figure 6 The power battery 10 includes a heating module 10a and a cooling module 10b.

[0183] Heating module 10a is used to heat battery module 210, and heating module 10a includes at least one heat exchange device 100 as described above; cooling module 10b is used to cool battery module 210, and cooling module 10b includes at least one heat exchange device 100 as described above; wherein at least a portion of battery module 210 is located between heating module 10a and cooling module 10b.

[0184] It is understood that the heating module 10a and the cooling module 10b can use the same heat exchange device 100, and the heating or cooling function can be achieved simply by selecting different heat exchange working fluids. When the overall temperature of the battery module 210 is too high or the temperature of the battery cell unit 211 in the battery module 210 is too high, the cooling module 10b is activated to cool the battery module 210 or the battery cell unit 211. When the overall temperature of the battery module 210 is low or the temperature of the battery cell unit 211 in the battery module 210 is low, the heating module 10a is activated to heat the battery module 210 or the battery cell unit 211.

[0185] By employing this approach, the battery module 210 is actively thermally managed through the heating module 10a and cooling module 10b, adapting to temperature changes in the battery module 210 or the environment, thereby improving the operational performance of the power battery 10. Furthermore, the structural strength of the power battery 10 is increased by the placement of the first base 110 and the second base 120 on the upper and lower sides of the battery module 210.

[0186] In some embodiments, refer to Figure 9The cooling module 10b is configured to communicate with the air conditioning system 20 of the vehicle 1 so that the refrigerant in the air conditioning system 20 exchanges heat with the battery module 210 when passing through the first substrate 110 and the second substrate 120 in the cooling module 10b.

[0187] With this approach, heat exchange occurs between the refrigerant in the air conditioning system 20 and the battery module 210. The refrigerant directly utilizes its latent heat of phase change to cool the battery module 210, resulting in high heat exchange efficiency.

[0188] In some embodiments, refer to Figure 9 The first substrate 110 and the second substrate 120 in the cooling module 10b are respectively connected to the outlet of the compressor 21 of the air conditioning system 20.

[0189] Specifically, the first connector 150 in the cooling module 10b is connected to the outlet of the compressor 21 of the air conditioning system 20 via a high-pressure pipe 41, while the second connector 160 in the cooling module 10b is connected to the air conditioning system 20 via a low-pressure pipe 42.

[0190] In some specific implementations, the refrigerant required by the cooling module 10b is supplied by the compressor 21. The cooling module 10b is connected in parallel with the air conditioning system 20, and the refrigerant flow of each circuit is controlled by a thermostatic expansion valve and an electronic expansion valve.

[0191] In some embodiments, refer to Figure 9 The heating module 10a is configured to communicate with the engine cooling system 30 of the vehicle 1 so that the coolant in the engine cooling system 30 exchanges heat with the battery module 210 when passing through the first substrate 110 and the second substrate 120 in the heating module 10a.

[0192] In some specific embodiments, the coolant is a high-temperature coolant of about 100°C in the high-temperature circuit of the engine cooling system 30.

[0193] This approach utilizes the high-temperature coolant in the engine cooling system 30 to heat the battery module 210, thus taking advantage of waste heat that would otherwise be dissipated into the air through the high-temperature radiator 32, thereby improving the overall energy efficiency of the vehicle. Furthermore, this heating method does not require the power battery 10 to generate electricity, thus extending the driving range of the power battery 10.

[0194] In some embodiments, refer to Figure 9 The first substrate 110 and the second substrate 120 in the heating module 10a are respectively connected to the liquid outlet of the engine cooling system 30. Specifically, the first connector 150 in the heating module 10a is connected to the liquid outlet of the engine cooling system 30 through the liquid inlet pipe 43, and the second connector 160 in the heating module 10a is connected to the engine cooling system 30 through the liquid outlet pipe 44.

[0195] In some specific implementations, the temperature of the coolant entering the heating module 10a can be adjusted by valves and water pump 31, making the heat exchange efficiency controllable. In this solution, the high-temperature radiator 32 exchanges heat with the heating module 10a to cool down the coolant, and the cooled coolant flows back to the engine cooling system 30.

[0196] In some embodiments, refer to Figure 10 The power battery 10 also includes a return pipe 220. The return pipe 220 is connected between the output end and the input end of the cooling module 10b to guide a portion of the coolant output from the output end to the input end.

[0197] For example, the return pipe 220 is connected between the second connector 160 and the first connector 150 of the heating module 10a, so that a portion of the cooled coolant in the second connector 160 can flow back to the first connector 150 and mix with the high-temperature coolant in the first connector 150, thereby regulating the temperature of the coolant entering the first substrate 110 and the second substrate 120.

[0198] In some specific embodiments, the temperature of the coolant entering the first substrate 110 and the second substrate 120 is controlled by adjusting the flow rate of the high-temperature coolant entering the first connector 150 in the heating module 10a and the flow rate of the return pipe 220, so that the first substrate 110 and the second substrate 120 operate at a suitable temperature.

[0199] In some embodiments, the power battery 10 further includes a thermally conductive adhesive (not shown). The thermally conductive adhesive is disposed between at least one of the first substrate 110 and the second substrate 120 of the heat exchange device 100 and the battery module 210, thereby improving the heat transfer capability between the first substrate 110 and the second substrate 120 and the battery module 210.

[0200] In some embodiments, refer to Figure 1 , Figure 2 and Figure 4 The shunt 130 is provided with a first positioning groove 133 on the side facing the battery module 210. The power battery 10 also includes a first positioning member 230. One end of the first positioning member 230 is embedded in the first positioning groove 133 in the heating module 10a, and the other end of the first positioning member 230 is embedded in the first positioning groove 133 in the cooling module 10b.

[0201] For example, the first positioning member 230 is located at one end of the battery cell unit 211 in the third direction, and multiple first positioning members 230 are provided, each corresponding to a battery cell unit 211.

[0202] By adopting this scheme, the setting of the first positioning component 230 facilitates the positioning of the shunt component 130 in the heating module 10a and the cooling module 10b, which is convenient for the assembly of the power battery 10.

[0203] In some embodiments, refer to Figure 1 and Figure 2 The busbar 140 is provided with a second positioning groove on the side facing the battery module 210, and the power battery 10 also includes a second positioning member 240. One end of the second positioning member 240 is embedded in the second positioning groove in the heating module 10a, and the other end of the second positioning member 240 is embedded in the second positioning groove in the cooling module 10b.

[0204] For example, the second positioning member 240 is located at the other end of the battery cell unit 211 in the third direction, and multiple second positioning members 240 are provided, each corresponding to a battery cell unit 211.

[0205] By adopting this scheme, the setting of the second positioning component 240 facilitates the positioning of the busbar 140 in the heating module 10a and the cooling module 10b, which makes it easier to assemble the power battery 10.

[0206] In some embodiments, refer to Figure 2 and Figure 6 The power battery 10 also includes a separator 250. The separator 250 is disposed between the second base 120 of the heating module 10a and the second base 120 of the cooling module 10b. This facilitates control over the depth of the second base 120 inserted into the battery module 210, enables vertical positioning, and controls the spacing between two adjacent cell units 211, thus facilitating the assembly of the power battery 10.

[0207] For example, multiple isolation members 250 are provided, and the multiple isolation members 250 are spaced apart along the second direction, with one isolation member 250 provided on each of the left and right sides of the battery cell unit 211.

[0208] In some embodiments, refer to Figure 7 The second base 120 of the heating module 10a and the second base 120 of the cooling module 10b are staggered in the second direction, and in the projection plane perpendicular to the second direction, the projection of the second base 120 of the heating module 10a and the projection of the second base 120 of the cooling module 10b at least partially overlap, so that at least part of the cell unit is located between the second base 120 of the heating module 10a and the second base 120 of the cooling module 10b.

[0209] It can be understood that the second base 120 of the heating module 10a and the second base 120 of the cooling module are stacked in the second direction. That is, the second base 120 of the heating module 10a is inserted into the receiving space formed by the first base 110 and the second base 120 of the cooling module 10b, and the second base 120 of the cooling module 10b is inserted into the receiving space formed by the first base 110 and the second base 120 of the heating module 10a.

[0210] This approach can further reduce the heat transfer distance between the heat exchange device 100 and the battery cell 211 in the first direction, thereby improving the heat exchange efficiency.

[0211] In some embodiments, refer to Figure 7 The second base 120 of the heating module 10a extends to contact the first base 110 of the cooling module 10b.

[0212] With this approach, the heating module 10a and the cooling module 10b are positioned in the first direction through the contact and engagement between the second base 120 of the heating module 10a and the first base 110 of the cooling module 10b.

[0213] In some embodiments, refer to Figure 7 The second base 120 of the cooling module 10b extends to contact the first base 110 of the heating module 10a.

[0214] By contacting and engaging the second base 120 of the cooling module 10b with the first base 110 of the heating module 10a, the heating module 10a and the cooling module 10b are positioned in the first direction, while the overall stability of the heating module 10a and the cooling module 10b is improved.

[0215] According to the third aspect of this application, referring to Figure 11 The present invention provides a vehicle 1, which includes the heat exchange device 100 as described above, or the power battery 10 as described above. The vehicle 1 has all the beneficial effects of the heat exchange device 100 or the power battery 10 described above, which will not be repeated here.

[0216] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0217] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0218] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0219] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A heat exchange device (100) for regulating the temperature of a battery module (210); characterized in that, The heat exchange device (100) includes: The first substrate (110) is configured to exchange heat with the battery module (210) in a first direction; The second substrate (120) is configured to exchange heat with the battery module (210) in a second direction; Wherein, the first direction intersects with the second direction.

2. The heat exchange device (100) according to claim 1, characterized in that, In a projection plane perpendicular to the first direction, the projection of the first substrate (110) at least partially overlaps with the projection of the battery module (210). In a projection plane perpendicular to the second direction, the projection of the second substrate (120) at least partially overlaps with the projection of the battery module (210).

3. The heat exchange device (100) according to claim 1, characterized in that, The battery module (210) includes at least two battery cells (211) stacked in the second direction; The heat exchange device (100) includes a plurality of second substrates (120), which are spaced apart in the second direction so that the battery cell (211) is located between two second substrates.

4. The heat exchange device (100) according to claim 3, characterized in that, The plurality of second substrates (120) are respectively connected to the first substrate (110) so that the plurality of second substrates (120) and the first substrate (110) form a whole.

5. The heat exchange device (100) according to claim 3, characterized in that, The second substrate (120) and the first substrate (110) surround a receiving space (100a) so that at least a portion of the battery cell (211) is enclosed in the receiving space (100a).

6. The heat exchange device (100) according to claim 5, characterized in that, The plurality of the accommodating spaces (100a) are spaced apart in the second direction.

7. The heat exchange device (100) according to any one of claims 1 to 6, characterized in that, The first substrate (110) has a first working fluid channel (111) for the flow of heat exchange working fluid, and the second substrate (120) has a second working fluid channel (121) for the flow of heat exchange working fluid, and the first working fluid channel (111) and the second working fluid channel (121) extend in a third direction respectively; The third direction intersects with the second direction and the first direction, respectively.

8. The heat exchange device (100) according to claim 7, characterized in that, The first working medium channel (111) is connected to the second working medium channel (121).

9. The heat exchange device (100) according to claim 7, characterized in that, The heat exchange device (100) further includes: A turbulent fluid (170) is used to agitate the heat exchange medium in the first working medium channel (111) and / or the second working medium channel (121); The first working medium channel (111) and / or the second working medium channel (121) are provided with the turbulent fluid (170).

10. The heat exchange device (100) according to any one of claims 1 to 6, characterized in that, The heat exchange device (100) further includes: The diverter (130) is used to divert the heat exchange working fluid input from the working fluid source equipment to the first substrate (110) and the second substrate (120); The diverter (130) is connected to the liquid inlet side of the first substrate (110) and the second substrate (120).

11. The heat exchange device (100) according to claim 10, characterized in that, The first substrate (110) has a first working fluid channel (111) for the flow of heat exchange working fluid, and the second substrate (120) has a second working fluid channel (121) for the flow of heat exchange working fluid; The diverter (130) has the following features: The first cavity is connected to the first working medium channel (111) and the second working medium channel (121), respectively.

12. The heat exchange device (100) according to claim 11, characterized in that, The diverter (130) also has: Multiple diversion ports (131) are used to input the heat exchange working fluid in the first cavity into the first working fluid channel (111) and the second working fluid channel (121) from different positions; The plurality of the diversion ports (131) are respectively connected to the first cavity, and a portion of the diversion ports (131) are spaced apart along the first direction, while the other portion of the diversion ports (131) are spaced apart along the second direction.

13. The heat exchange device (100) according to claim 11, characterized in that, The diverter (130) also has: Multiple inlets (132) are spaced apart along the second direction so that the heat exchange medium can be input into the first cavity from different positions in the second direction; The multiple input ports (132) are respectively connected to the first cavity.

14. The heat exchange device (100) according to claim 11, characterized in that, The heat exchange device (100) further includes: The first connector (150) is used to form a connection between the diverter (130) and the working fluid source device; The first connector (150) is fixedly connected to the diverter (130).

15. The heat exchange device (100) according to any one of claims 1 to 6, characterized in that, The heat exchange device (100) further includes: The manifold (140) is used to combine the heat exchange working fluid output from the first substrate (110) and the second substrate (120) to the working fluid source device; The manifold (140) is connected to the liquid outlet side of the first substrate (110) and the second substrate (120).

16. The heat exchange device (100) according to claim 15, characterized in that, The first substrate (110) has a first working fluid channel (111) for the flow of heat exchange working fluid, and the second substrate (120) has a second working fluid channel (121) for the flow of heat exchange working fluid; The busbar (140) has the following features: The second cavity is connected to the first working medium channel (111) and the second working medium channel (121), respectively.

17. The heat exchange device (100) according to claim 16, characterized in that, The busbar (140) also has: Multiple manifolds are used to output the heat exchange working fluid in the first working fluid channel (111) and the second working fluid channel (121) from different positions to the second cavity; The plurality of the manifolds are respectively connected to the second cavity, and a portion of the manifolds are spaced apart along the first direction, while the other portion of the manifolds are spaced apart along the second direction.

18. The heat exchange device (100) according to claim 16, characterized in that, The busbar (140) also has: Multiple output ports are spaced apart along the second direction to output the heat exchange medium in the second cavity from different positions in the second direction; The multiple output ports are respectively connected to the second cavity.

19. The heat exchange device (100) according to claim 15, characterized in that, The heat exchange device (100) further includes: A second connector (160) is used to form a connection between the manifold (140) and the working fluid source device; wherein the second connector (160) is fixedly connected to the manifold (140).

20. A power battery (10), characterized in that, It includes a battery module (210) and a heat exchange device (100) as described in any one of claims 1 to 19.

21. The power battery (10) according to claim 20, characterized in that, The power battery (10) includes: A heating module (10a) is used to heat the battery module (210), and the heating module (10a) includes at least one of the heat exchange devices (100); A cooling module (10b) is used to cool the battery module (210), the cooling module (10b) including at least one of the heat exchange devices (100); At least a portion of the battery module (210) is located between the heating module (10a) and the cooling module (10b).

22. The power battery (10) according to claim 21, characterized in that, The cooling module (10b) is configured to communicate with the air conditioning system (20) of the vehicle (1) so that the refrigerant in the air conditioning system (20) exchanges heat with the battery module (210) as it passes through the first substrate (110) and the second substrate (120) in the cooling module (10b).

23. The power battery (10) according to claim 22, characterized in that, The first substrate (110) and the second substrate (120) in the cooling module (10b) are respectively connected to the outlet of the compressor (21) of the air conditioning system (20).

24. The power battery (10) according to claim 21, characterized in that, The heating module (10a) is configured to communicate with the engine cooling system (30) of the vehicle (1) so that the coolant in the engine cooling system (30) exchanges heat with the battery module (210) as it passes through the first substrate (110) and the second substrate (120) in the heating module (10a).

25. The power battery (10) according to claim 24, characterized in that, The first substrate (110) and the second substrate (120) in the heating module (10a) are respectively connected to the liquid outlet of the engine cooling system (30).

26. The power battery (10) according to claim 25, characterized in that, The power battery (10) also includes: A return pipe (220) is connected between the output and input ends of the cooling module (10b) to guide a portion of the coolant output from the output end to the input end.

27. The power battery (10) according to any one of claims 20 to 26, characterized in that, The power battery (10) also includes: Thermally conductive adhesive is disposed between the first substrate (110) and / or the second substrate (120) of the heat exchange device (100) and the battery module (210).

28. The power battery (10) according to any one of claims 21 to 26, characterized in that, The heat exchange device (100) further includes: The diverter (130) is used to divert the heat exchange working fluid input from the working fluid source equipment to the first substrate (110) and the second substrate (120); The shunt component (130) is provided with a first positioning groove (133) on the side facing the battery module (210), and the power battery (10) further includes: The first positioning member (230) has one end embedded in the first positioning groove (133) in the heating module (10a) and the other end embedded in the first positioning groove (133) in the cooling module (10b).

29. The power battery (10) according to any one of claims 21 to 26, characterized in that, The heat exchange device (100) further includes: The manifold (140) is used to combine the heat exchange working fluid output from the first substrate (110) and the second substrate (120) to the working fluid source device; The busbar (140) is provided with a second positioning groove on the side facing the battery module (210), and the power battery (10) also includes: The second positioning member (240) has one end embedded in the second positioning groove in the heating module (10a) and the other end embedded in the second positioning groove in the cooling module (10b).

30. The power battery (10) according to any one of claims 21 to 26, characterized in that, The second base of the heating module and the second base of the cooling module are arranged opposite to each other in a second direction; The power battery (10) also includes: An isolation element (250) is disposed between the second base (120) of the heating module (10a) and the second base (120) of the cooling module (10b).

31. The power battery (10) according to any one of claims 21 to 26, characterized in that, The battery module (210) includes at least two battery cells (211) stacked in the second direction; The second base (120) of the heating module (10a) and the second base (120) of the cooling module (10b) are staggered in the second direction, and in the projection plane perpendicular to the second direction, the projection of the second base (120) of the heating module (10a) and the projection of the second base (120) of the cooling module (10b) at least partially overlap, so that at least a portion of the battery cell is located between the second base (120) of the heating module (10a) and the second base (120) of the cooling module (10b).

32. The power battery (10) according to claim 31, characterized in that, The second base (120) of the heating module (10a) extends to contact the first base (110) of the cooling module (10b); And / or the second base (120) of the cooling module (10b) extends to contact the first base (110) of the heating module (10a).

33. A vehicle (1), characterized in that, It includes the heat exchange device (100) as described in any one of claims 1 to 19, or the power battery (10) as described in any one of claims 20 to 32.

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