Heat exchange plate, battery pack, and vehicle

Abstract

Heat exchange plate, battery pack, and vehicle. The heat exchange plate includes a first interface, a second interface, and a flow path communicating with the first interface and the second interface. The heat exchange plate is configured to exchange heat for a battery, and the flow path is configured to circulate a working medium. When the heat exchange plate is used to cool the battery, the working medium flows into the flow path from the first interface and flows out from the second interface. When the heat exchange plate is used to heat the battery, the working medium flows into the flow path from the second interface and flows out from the first interface.

Description

Technical Field

[0005]

[0001] Cross - reference to Related Applications This disclosure claims priority and benefits to Chinese Patent Application No. 202210911342.3 filed on July 29, 2022 and Chinese Patent Application No. 202211352187.2 filed on October 31, 2022. The entire content of the above applications is incorporated herein by reference.

[0002] This disclosure relates to the field of battery components, and more particularly to heat exchange plates, battery packs, and vehicles.

Background Art

[0003] As people's awareness of environmental protection increases, more electric vehicles are emerging. As the core power component in electric vehicles, the battery is essential for the long - term and stable operation of electric vehicles.

[0004] In existing technologies, water passes through a harmonica tube to cool or heat the battery. However, the water flow can only enter the harmonica tube from a fixed inlet and is discharged from a fixed outlet, that is, the harmonica tube uses the same water flow direction during the heating operation or the cooling operation. As a result, heat exchange components such as the harmonica tube may easily make the temperatures of some parts of the battery too high or too low, reducing the stability and service life of the battery.

Summary of the Invention

Problems to be Solved by the Invention

[0005] One object of this disclosure is to provide a novel technical solution for a heat exchange plate, a battery pack, and a vehicle that can solve the problem of low heat exchange efficiency of conventional heat exchange plates.

Means for Solving the Problems

[0006] According to a first aspect of the present disclosure, a heat exchange plate is provided that is applied to a battery and includes a first terminal, a second terminal, and a flow path connecting the first terminal to the second terminal. The heat exchange plate is configured to exchange heat for the battery, and the flow path is configured to allow a working fluid to flow. When the heat exchange plate is configured to cool the battery, the working fluid flows in from the first terminal into the flow path and out from the second terminal. When the heat exchange plate is configured to heat the battery, the working fluid flows in from the second terminal into the flow path and out from the first terminal.

[0007] Optionally, when the heat exchange plate is configured to cool the battery, the working fluid flows in from the first terminal and preferentially through the first type region, and when the heat exchange plate is configured to heat the battery, the working fluid flows in from the second terminal and preferentially through the second type region.

[0008] The first type region is positioned corresponding to the post region of the battery, and the second type region is positioned corresponding to the non-post region of the battery.

[0009] Optionally, the flow path includes a first flow path section connected to a first terminal and a second flow path section connected to a second terminal.

[0010] When the heat exchange plate is configured to cool the battery, the working fluid flows in from the first terminal, through the first and second flow channels in succession, and then flows out from the second terminal. In the first flow channel, the length of the flow channel through the first type region is longer than the length of the flow channel through the second type region. In the second flow channel, the length of the flow channel through the first type region is shorter than the length of the flow channel through the second type region.

[0011] When the heat exchange plate is configured to heat the battery, the working fluid flows in from the second terminal, through the second and first flow path sections in succession, and then flows out from the first terminal. In the second flow path section, the length of the flow path through the first type region is shorter than the length of the flow path through the second type region. In the first flow path section, the length of the flow path through the first type region is longer than the length of the flow path through the second type region.

[0012] Optionally, the ratio of the length of the first channel section to the length of the second channel section is in the range of 0.5 to 5.

[0013] Optionally, the ratio of the width of the second type region to the width of the first type region is in the range of 1 to 8.

[0014] Optionally, the ratio of width to battery length in the first type region is in the range of 0.1 to 0.4, and the ratio of width to battery length in the second type region is in the range of 0.1 to 0.6.

[0015] Optionally, the first and second terminations are located on the same side of the heat exchange plate.

[0016] Optionally, the heat exchange plate includes inlet and outlet assemblies, with a first and second end portion located within the inlet and outlet assemblies.

[0017] Optionally, the heat exchange plate includes a first-type region and a second-type region, with flow paths distributed in the first-type and second-type regions. The first-type region includes a first partition and a second partition, and the second-type region includes a first partition region, the first partition region located between the first partition and the second partition. When the heat exchange plate is configured to exchange heat for a battery, the working fluid circulates at least once through the first partition, the first partition region, and the second partition. The first-type region is positioned corresponding to the post region of the battery, and the second-type region is positioned corresponding to the non-post region of the battery.

[0018] Optionally, the first type region includes a fourth sub-region, and the second type region includes a second partition region. When the heat exchange plate is configured to cool the battery, the working fluid flows from the first terminal through the fourth sub-region, the second partition region, and the fourth sub-region, and flows from the fourth sub-region to the second terminal. When the heat exchange plate is configured to heat the battery, the working fluid flows from the second terminal through the fourth sub-region, the second partition region, and the fourth sub-region, and flows from the fourth sub-region to the first terminal.

[0019] Optionally, the first type region includes a fourth sub-region and a second sub-region, the second type region includes a second partition region, and the second partition region is located between the fourth sub-region and the second sub-region.

[0020] When the heat exchange plate is configured to cool the battery, the working fluid flows from the first terminal to the fourth sub-region, the second partition region, and the second sub-region, then flows back from the second sub-region to the second partition region and the fourth sub-region, and then flows into the second terminal. When the heat exchange plate is configured to heat the battery, the working fluid flows from the second terminal to the fourth sub-region, the second partition region, and the second sub-region, then flows back from the second sub-region to the second partition region and the fourth sub-region, and then flows into the first terminal.

[0021] Optionally, the heat exchange plate includes a first heat exchange module and a second heat exchange module, and both the first and second heat exchange modules include a first type region and a second type region. The first type region includes a third sub-region, a first sub-region, a fourth sub-region, and a second sub-region, and the second type region includes a first partition region and a second partition region. The first partition region is located between the third sub-region and the first sub-region, the second partition region is located between the fourth sub-region and the second sub-region, and the first and fourth sub-regions are arranged adjacent to each other.

[0022] When the first heat exchange module is optionally configured such that the heat exchange plate exchanges heat for the battery, the working medium circulates at least once through the third sub-region, the first partition region, and the flow path of the first sub-region.

[0023] Optionally, in the second heat exchange module, when the heat exchange plate is configured to cool the battery, the working medium flows into the first heat exchange module from the first terminal end, flows into the fourth sub-region and the second sub-region from the first heat exchange module, flows into the second partition region from the fourth sub-region and the second sub-region, and then flows into the second terminal end. When the heat exchange plate is configured to heat the battery, the working medium flows into the second partition region from the second terminal end, flows into the fourth sub-region and the second sub-region from the second partition region, and then flows into the first terminal end.

[0024] Optionally, the flow path includes a flow branch point, the flow branch point includes a first-stage flow branch point, at least one first-stage flow branch point is disposed within a first-type region, the first-stage flow branch point is disposed adjacent to the first terminal end or the second terminal end, and the flow branch point branches the flow path.

[0025] Optionally, the heat exchange plate includes a first heat exchange module and a second heat exchange module, and both the first heat exchange module and the second heat exchange module include a first-type region. The first-type region of the first heat exchange module includes a third sub-region and a first sub-region, and the first-type region of the second heat exchange module includes a fourth sub-region and a second sub-region. The first-stage flow branch point is disposed within the third sub-region, the flow branch point further includes a second-stage flow branch point, and the second-stage flow branch point is located in at least one of the first sub-region, the second sub-region, and the fourth sub-region.

[0026] Optionally, the heat exchange plate includes a heat exchange region and a battery region, the heat exchange region is disposed around the battery region, the battery region is a battery protruding region of the battery on the heat exchange plate, and the flow path includes a first-type flow path and a second-type flow path. The first-type flow path is located in the heat exchange region, and the second-type flow path is distributed in the battery region.

[0027] Optionally, the length of the first type of flow path is shorter than the length of the second type of flow path, and / or the number of bifurcations of the first type of flow path is less than the number of bifurcations of the second type of flow path.

[0028] According to a second aspect of the present disclosure, a battery pack including a heat exchange plate according to the first aspect is provided.

[0029] According to a third aspect of the present disclosure, a vehicle including a heat exchange plate according to the first aspect or

[0030] a battery pack according to the second aspect is provided.

[0031] The technical effects of the present disclosure are as follows.

[0032] Embodiments of the present disclosure provide a heat exchange plate. The heat exchange plate can improve the heat exchange efficiency of the heat exchange plate through heat exchange between the working medium and the battery. Further, when the heat exchange plate is configured to cool or heat the battery, the flow direction of the working medium in the flow path can be flexibly switched, so that the region first heated when the heat exchange plate heats the battery is different from the region first cooled when the heat exchange plate cools the battery, which improves the temperature uniformity of the heat exchange of the heat exchange plate.

[0033] Other features and advantages of the present disclosure will become apparent from the following detailed description of exemplary embodiments of the present disclosure when taken in conjunction with the accompanying drawings.

[0034] The accompanying drawings are incorporated herein and form a part hereof, showing embodiments consistent with the present disclosure and used together with this specification to explain the principles of the present disclosure.

Brief Description of the Drawings

[0035] [Figure 1] It is a schematic diagram of dividing a battery pack according to an embodiment of the present disclosure. [Figure 2] This is a top view of a battery pack according to one embodiment of the present disclosure. [Figure 3] This is a first schematic diagram of the flow direction (a) and partition (b) of the flow path of a heat exchange plate according to one embodiment of the present disclosure. [Figure 4] This is a second schematic diagram of the flow direction (a) and partition (b) of the flow path of a heat exchange plate according to one embodiment of the present disclosure. [Figure 5] This is a first schematic diagram of a heat exchange plate according to one embodiment of the present disclosure. [Figure 6] This is a second schematic diagram of a heat exchange plate according to one embodiment of the present disclosure. [Figure 7] This is a first schematic diagram of the flow direction of the flow path of a heat exchange plate according to one embodiment of the present disclosure. [Figure 8] This is a second schematic diagram of the flow direction of the flow path of a heat exchange plate according to one embodiment of the present disclosure. [Figure 9] This is a schematic diagram of a turning point for a heat exchange plate according to one embodiment of the present disclosure. [Figure 10] This is a schematic diagram of a flow branching / converging point of a heat exchange plate according to one embodiment of the present disclosure. [Figure 11] This is a schematic diagram illustrating a partition for a heat exchange plate according to one embodiment of the present disclosure. [Figure 12] This is a first schematic diagram of a battery pack according to one embodiment of the present disclosure. [Figure 13] This is a third schematic diagram of a heat exchange plate according to one embodiment of the present disclosure. [Figure 14] This is an enlarged view of part A of Figure 13. [Figure 15] This is a fourth schematic diagram of a heat exchange plate according to one embodiment of the present disclosure. [Figure 16] This is a schematic diagram of a first heat exchange module of a heat exchange plate according to one embodiment of the present disclosure. [Figure 17] This is a schematic diagram of a second heat exchange module of a heat exchange plate according to one embodiment of the present disclosure. [Figure 18]This is a schematic diagram illustrating a partition for a heat exchange plate according to one embodiment of the present disclosure. [Figure 19] This is a schematic diagram of the base plate and flow path plate. [Modes for carrying out the invention]

[0036] Various exemplary embodiments of this disclosure are described below in detail with reference to the accompanying drawings. Note that, unless otherwise specified, the reverse arrangement of components and processes, formulas, and numerical values ​​described in the embodiments do not limit the scope of this disclosure.

[0037] The following description of at least one exemplary embodiment is illustrative and in no way constitutes any limitation to the Disclosure or any application or use thereof.

[0038] Techniques, methods, and devices known to those skilled in the art may not be discussed in detail herein, but where appropriate, such techniques, methods, and devices shall be considered as part of this specification.

[0039] In all examples shown and discussed herein, any specific values ​​are illustrative only and should not be construed as limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0040] Please note that similar reference numbers and reference letters refer to similar items in the following attached drawings. Therefore, once an item is defined in one attached drawing, it does not need to be discussed further in subsequent attached drawings.

[0041] This technical solution provides a heat exchange plate that can be used in electric vehicles, and the heat exchange plate can provide a good heat exchange effect for the battery. When the battery needs to be heated, a heat exchanger with heat can be conducted through the channel to various areas of the battery to assist in heating the battery. When the battery needs to be cooled, the channel can be used in the reverse direction, thereby conducting a heat exchanger with low temperature in the reverse direction through the channel to various areas of the battery to assist in cooling the battery.

[0042] The heat exchange plate provided by this technical solution is designed to provide stable heat exchange performance for batteries in new energy electric vehicles and to provide a better temperature environment for the battery.

[0043] Referring to Figures 1 to 15, embodiments of the present disclosure provide a heat exchange plate applied to a battery. The heat exchange plate is It comprises a first terminal section 221, a second terminal section 222, and a flow path 21 connecting the first terminal section 221 to the second terminal section 222.

[0044] The heat exchange plate 2 is configured to exchange heat for the battery, and the flow path is configured to allow the working fluid to flow. The working fluid may be a coolant such as R123a and R32 and CO2 or water.

[0045] When the heat exchange plate 2 is configured to cool the battery, for example, when the heat exchange plate 2 can cool the battery through a low-temperature working medium, the working medium flows into the flow path 21 from the first terminal 221 and flows out from the second terminal 222. Through the phase change of the working medium and heat exchange with the battery, the battery can be effectively cooled.

[0046] When the heat exchange plate 2 is configured to heat the battery, for example, when the heat exchange plate 2 can heat the battery by passing a high-temperature working medium through it, the working medium flows into the flow path 21 from the second terminal 222 and out from the first terminal 221. Through the phase change of the working medium and heat exchange with the battery, the battery can be effectively heated. This improves the heat exchange effect of the heat exchange plate 2 for the battery and ensures the long-term and stable operation of the battery.

[0047] The heat exchange plate provided in the embodiments of this disclosure can improve the heat exchange efficiency of the heat exchange plate 2 through phase change of the working medium and heat exchange with the battery. Furthermore, when the heat exchange plate 2 is configured to cool or heat the battery, the area that is first heated when the heat exchange plate heats the battery is different from the area that is first cooled when the heat exchange plate cools the battery, which improves the temperature uniformity of the heat exchange of the heat exchange plate.

[0048] In addition, the flow path 21 may be engraved on the heat exchange plate 2, and the battery may contain multiple cells. The heat exchange plate 2 cools the battery in the forward direction (direction of the working medium flow in the flow path) and heats the battery in the reverse direction (direction of the working medium flow in the flow path), which can improve the cooling and heating effect of the battery, ensure temperature uniformity of the battery, and improve the heat exchange capacity of the heat exchange plate 2 for the battery.

[0049] The heat exchange plate 2 can be switched between two states: a cooling mode and a heating mode. In these two states, the heat exchange plate or pump device causes the working medium to flow in opposite directions, thereby achieving the objective of preferentially performing heat exchange on the area.

[0050] Optionally, When the heat exchange plate 2 is configured to cool the battery, the working fluid flows in from the first terminal 221 and preferentially flows through the first type region. When the heat exchange plate 2 is configured to heat the battery, the working fluid flows in from the second terminal 222 and preferentially flows through the second type region.

[0051] The first type region 26 is positioned corresponding to the post region of the battery, and the second type region 27 is positioned corresponding to the non-post region of the battery.

[0052] Specifically, when the heat exchange plate 2 is configured to exchange heat for the battery, the first type region 26 can correspond to the region in the battery where the battery core generates higher heat, and the second type region 27 can correspond to the region in the battery where the battery core generates lower heat. Because the battery core needs to provide posts for electrical connections, the heat generated in the post region of the battery core (the region near the posts) during operation is hotter and therefore forms the post region of the battery. The region of the body of the battery core generates lower heat and therefore forms the non-post region of the battery. To improve the heat exchange efficiency of the heat exchange plate 2, the first type region 26 can be positioned to correspond to the post region of the battery, and the second type region 27 can be positioned to correspond to the non-post region of the body of the battery core on the battery.

[0053] When the heat exchange plate 2 is configured to cool the battery, the overall temperature of the battery is relatively high, and the working medium may be a low-temperature coolant. The low-temperature working medium flows in from the first terminal 221 and then preferentially flows through the first type region. In this way, to improve the efficiency of heat exchange between the heat exchange plate and the post region of the battery, the low-temperature working medium can be used to preferentially cool the post region of the battery, which generates higher heat on the battery. Then, to ensure a heat exchange balance of the heat exchange plate for the battery and to maintain temperature uniformity of the battery during operation, the working medium in the flow path flows through the second type region to cool the non-post region of the battery, which generates lower heat on the battery.

[0054] Specifically, when the heat exchange plate 2 is configured to cool the battery, the working fluid preferentially flows through the first type region, which may be the case if the length of the flow path of the working fluid flowing through the first type region is longer than the length of the flow path of the working fluid flowing through the second type region, or if the flow rate of the working fluid flowing through the first type region is greater than the flow rate of the working fluid flowing through the second type region, thereby ensuring that the cooling provided to the battery by the first type region is greater than the cooling provided to the battery by the second type region, thereby bringing the temperature of the first type region closer to the temperature of the second type region, and thereby ensuring temperature uniformity of the heat exchange plate.

[0055] When the heat exchange plate 2 is configured to heat the battery, the overall temperature of the battery is relatively low, and the working fluid may be a high-temperature coolant. The high-temperature working fluid flows in from the second terminal 222 and then preferentially flows through the second type region. In this way, to improve the efficiency of heat exchange between the heat exchange plate and the non-post region of the battery, the high-temperature working fluid can be used to preferentially heat the non-post region of the battery, which has lower heat on the battery. Then, to ensure the heat exchange balance of the heat exchange plate for the battery and to maintain temperature uniformity of the battery during operation, the working fluid in the flow path flows through the first type region to heat the post region of the battery, which has higher heat on the battery.

[0056] Specifically, when the heat exchange plate 2 is configured to heat the battery, the preferential flow of the working fluid through the second type region may be such that the length of the flow path of the working fluid through the second type region is longer than the length of the flow path of the working fluid through the first type region, or that the flow rate of the working fluid through the second type region is greater than the flow rate of the working fluid through the first type region, thereby ensuring that the heating provided to the battery by the second type region is greater than the heating provided to the battery by the first type region, thereby bringing the temperature of the first type region closer to the temperature of the second type region, and thereby ensuring temperature uniformity of the heat exchange plate.

[0057] In this disclosure, it should be noted that the working fluid preferentially flowing through the first type region or the second type region does not restrict the flow order, but rather corresponds to the amount of heat exchange between the working fluid and the battery in the first type region or the second type region.

[0058] Optionally, the flow path includes a first flow path section connected to a first terminal 221 and a second flow path section connected to a second terminal.

[0059] When the heat exchange plate 2 is configured to cool the battery, the working fluid flows in from the first terminal 221, flows through the first and second flow path sections in succession, and then flows out from the terminal 2. In the first flow path section, the length of the flow path through the first type region is longer than the length of the flow path through the second type region, and in the second flow path section, the length of the flow path through the first type region is shorter than the length of the flow path through the second type region.

[0060] When the heat exchange plate 2 is configured to heat the battery, the working fluid flows in from the second terminal 222, flows through the second flow path section and the first flow path section in succession, and then flows out from the first terminal 221. In the second flow path section, the length of the flow path through the first type region is shorter than the length of the flow path through the second type region, and in the first flow path section, the length of the flow path through the first type region is longer than the length of the flow path through the second type region.

[0061] Specifically, when the heat exchange plate 2 is configured to cool the battery, the first flow path section may be the forward section of the flow path, and the second flow path section may be the backward section of the flow path. In the first flow path section, the length of the flow path through the first type region is longer than the length of the flow path through the second type region. Therefore, the low-temperature working fluid in the first flow path section can be used to exchange heat more effectively for the post region of the battery, which generates higher heat on the battery. When the working fluid flows into the second flow path section, the heat exchange efficiency of the working fluid decreases. In this case, in the second flow path section, the length of the flow path through the first type region is shorter than the length of the flow path through the second type region. Therefore, the working fluid in the second flow path section can be used to exchange heat between the heat exchange plate and the non-post region of the battery, which generates lower heat, thereby making full use of the heat exchange efficiency of different stages of the flow path on the heat exchange plate and improving the heat exchange effect of the heat exchange plate.

[0062] Specifically, when the heat exchange plate 2 is configured to heat the battery, the second flow path section may be the forward section of the flow path, and the first flow path section may be the backward section of the flow path. In the second flow path section, the length of the flow path through the first type region is shorter than the length of the flow path through the second type region. Therefore, the high-temperature working fluid in the second flow path section can be used to exchange heat more effectively for the non-post region of the battery, which has a lower temperature. When the working fluid flows into the first flow path section, the heat exchange efficiency of the working fluid decreases. In this case, in the first flow path section, the length of the flow path through the first type region is longer than the length of the flow path through the second type region. Therefore, the working fluid in the first flow path section can be used to exchange heat between the heat exchange plate and the post region of the battery, which has a relatively lower temperature, and this can also improve the heat exchange effect of the heat exchange plate.

[0063] In one embodiment, referring to Figure 5, a first flow path section connected to a first terminal 221 and a second flow path section connected to a second terminal 222 form a circulating flow path, and the extended region of the black solid line in Figure 11 may correspond to the first flow path section, and the flow path between the end of the black solid line and the second terminal may correspond to the second flow path section. Clearly, the first flow path section extends and exchanges heat mainly in a first type region, while the second flow path section extends and exchanges heat mainly in a second type region.

[0064] Optionally, the ratio of the length of the first channel section to the length of the second channel section is in the range of 0.5 to 5.

[0065] Specifically, the first flow path section is mainly configured to perform heat exchange between the heat exchange plate and the post region of the battery, and the second flow path section is mainly configured to perform heat exchange between the heat exchange plate and the non-post region of the battery. When the heat exchange plate exchanges heat for the post region that generates significant heat and the battery, the length of the first flow path section can be set to be longer than the length of the second flow path section. For example, the ratio of the length of the first flow path section to the length of the second flow path section is set, where 1 < a ≤ 3. For example, a is 1.2, 1.6, 2.0, 2.4, 2.6, or 2.8. Alternatively, the ratio of the length of the first flow path section to the length of the second flow path section is set, where 2 ≤ a ≤ 5. For example, a is 2.2, 2.6, 3.0, 3.4, 3.6, 3.8, 4.0, 4.4, 4.6, or 5. Alternatively, the ratio of the length of the first flow path section to the length of the second flow path section is set, where 3 ≤ a ≤ 5. For example, a is 3.0, 3.4, 3.6, 3.8, 4.0, 4.4, 4.6, or 5. Alternatively, the ratio of the length of the first flow path section to the length of the second flow path section is set, where 1 < a ≤ 2. For example, a is 1.2, 1.6, or 2.0. Alternatively, 2 ≤ a ≤ 4. For example, a is 2.2, 2.6, 3.0, 3.4, 3.6, 3.8, or 4.0. Thus, the heat exchange plate can prioritize heat exchange for different regions according to the battery heat exchange mode.

[0066] Optionally, the ratio of the width of the second type region to the width of the first type region is in the range of 1 to 8.

[0067] Specifically, referring to Figure 5, the second type region 27 may include the first partition region 271, the first type region 26 includes the third sub-region 2621 and the first sub-region 2611, and the first partition region 271 is located between the third sub-region 2621 and the first sub-region 2611. The width of the second type region may include the width H2 of the first partition region 271, the width of the first type region may include the width H1 of the third sub-region 2621 and the width H3 of the first sub-region 2611, and the width H1 of the third sub-region 2621 may be the same as or different from the width H3 of the first sub-region 2611.

[0068] The first type region 26 is positioned corresponding to the post region of the battery, and the second type region 27 is positioned corresponding to the non-post region of the battery. The post region of the battery is primarily used to connect the battery core within the battery to external devices, while the non-post region of the battery is primarily used to position the battery core. To ensure battery capacity, the non-post region of the battery is larger than the post region of the battery. To implement a correspondence between different regions of the heat exchange plate and the high-temperature and low-temperature regions of the battery for heat exchange, the width of the second type region can be set to be greater than the width of the first type region. For example, the width H2 of the first partition area 271 may be greater than the width H1 of the third sub-area 2621, specifically the ratio of the width H2 of the first partition area 271 to the width H1 of the third sub-area 2621 may be 2, 3, 4, 5, or 6, and / or the width H2 of the first partition area 271 may be greater than the width H3 of the first sub-area 2611, specifically the ratio of the width H2 of the first partition area 271 to the width H3 of the first sub-area 2611 may be 4, 5, 6, 7, or 8, thereby improving the heat exchange flexibility of the heat exchange plate for the battery.

[0069] Optionally, the ratio of the width to the length of the battery in the first type region is in the range of 0.1 to 0.4, and the ratio of the width to the length of the battery in the second type region is in the range of 0.1 to 0.6.

[0070] Specifically, the battery posts may be located at one end of the battery along its longitudinal direction, or they may be located at two ends of the battery along its longitudinal direction. A first type region 26 is positioned corresponding to the battery post region, and a second type region 27 is positioned corresponding to the battery non-post region. Thus, the width-to-battery length ratio of the first type region corresponds to the width-to-battery length ratio of the post region, and the width-to-battery length ratio of the second type region corresponds to the width-to-battery length ratio of the non-post region. To increase the size of the non-post region for positioning the battery core while ensuring that the battery is connected to the outside through the posts, the width-to-battery length ratio of the second type region can be set to be greater than the width-to-battery length ratio of the first type region. For example, the width-to-battery length ratio of the first type region is in the range of 0.1 to 0.4, and the width-to-battery length ratio of the second type region is in the range of 0.1 to 0.6. In addition, for batteries of different sizes, the width of the battery post region and the width of the non-post region also change accordingly. Therefore, the ratio of the width to the length of the battery in the first type region and the ratio of the width to the length of the battery in the second type region are also adjusted accordingly.

[0071] In one embodiment, when a heat exchange plate exchanges heat for a battery having a length of 1.2 m, the ratio of the width of the first type region to the length of the battery is in the range of 0.05 to 0.3, and the ratio of the width of the second type region to the length of the battery is in the range of 0.2 to 0.6.

[0072] In another embodiment, when the heat exchange plate exchanges heat for a battery having a length of 0.8 m, the ratio of the width to the length of the battery in the first type region is in the range of 0.3 to 0.4, and the ratio of the width to the length of the battery in the second type region is in the range of 0.1 to 0.4.

[0073] The first type region may correspond to the high-temperature region of the battery. The high-temperature region of the battery may be a region where the temperature fluctuates significantly. For example, the high-temperature region is a region where the battery temperature is 5°C to 10°C higher than the normal operating temperature. The second type region may correspond to the low-temperature region of the battery. The low-temperature region of the battery may be a region where the temperature fluctuates slightly. For example, the low-temperature region is a region where the battery temperature is 0°C to 5°C higher than the normal operating temperature.

[0074] Referencing optionally to Figures 3 and 4, the heat exchange plate 2 includes a first type region 26 and a second type region 27, and the flow path 21 is distributed in the first type region 26 and the second type region 27.

[0075] When the heat exchange plate 2 is configured to exchange heat for the battery, the working fluid circulates through the first type region 26 and the second region 27 at least once.

[0076] When the heat exchange plate 2 is configured to cool the battery, the working fluid flows from the first terminal 221 through the first type region 26 and the second type region 27, and from the second type region 27 into the second terminal 222.

[0077] When the heat exchange plate 2 is configured to heat the battery, the working fluid flows from the second terminal 222 through the second type region 27 and the first type region 26, and from the first type region 26 into the first terminal 221.

[0078] Specifically, when the heat exchange plate 2 is configured to cool the battery through a low-temperature working medium, the working medium flows into the heat exchange plate 2 from the first terminal 221, then flows from the flow path 21 of the first type region 26 to the flow path 21 of the second type region 27, and finally flows out of the heat exchange plate 2 from the second terminal 222. When the heat exchange plate 2 is configured to heat the battery through a high-temperature working medium in order to improve the heat exchange effect of the heat exchange plate 2 for the battery and ensure the long-term stable operation of the battery, the working medium flows into the heat exchange plate 2 from the second terminal 222, then flows from the flow path 21 of the second type region 27 to the flow path 21 of the first type region 26, and finally flows out of the heat exchange plate 2 from the first terminal 221.

[0079] When the heat exchange plate 2 is in cooling mode, the flow path 21 is designed to allow the working fluid to flow from the first type region 26 to the second type region 27. That is, the flow path 21 is designed so that the working fluid first flows into the flow path in the first type region 26, and then flows into the flow path in the second type region 27. In this way, the working fluid can first perform heat exchange in the first type region 26, and the working fluid preferentially absorbs the heat generated by the battery corresponding to the first type region 26, after which the heat exchange capacity of the working fluid decreases. Subsequently, the working fluid flows to the second type region 27 and exchanges the heat generated by the battery corresponding to this region. Finally, the working fluid flows to the second terminal 222 and flows out from the heat exchange plate 2.

[0080] On the other hand, when the heat exchange plate 2 is in heating mode, the flow path 21 is designed so that the working fluid can flow from the second type region 27 to the first type region 26. That is, the flow path is designed so that during reverse flow, the working fluid first flows into the flow path in the second type region 27, and then into the flow path in the first type region 26. The working fluid first exchanges heat with the second type region 27 and can dissipate the heat into the battery space corresponding to the second type region 27. Subsequently, the heat exchange capacity of the working fluid decreases, and the working fluid flows into the first type region 26. The working fluid dissipates the remaining heat in the first type region 26 into the space where the battery is located, and then flows back to the first terminal 221 and out of the heat exchange plate 2.

[0081] To improve the efficiency of heat exchange between the working fluid and the battery when the working fluid flows within the first type region 26 and the second type region 27, the flow path 21 within the first type region 26 and the second type region 27 can be configured as a circulating flow path. For example, to bend in order to form one or more circulating flow paths, the flow path 21 may change direction one or more times in the first type region 26, or the flow path 21 may change direction one or more times in the second type region 27, or the flow path 21 may change direction in both the first type region 26 and the second type region 27, thereby circulating the working fluid one or more times in the first type region 26 and the second type region 27, thereby improving the heat exchange efficiency of the heat exchange plate 2.

[0082] For example, the first type region 26 and the second type region 27 are arranged adjacent to each other, the first terminal 221 is located close to the first type region 26, and the second terminal 222 is located close to the second type region 27. When the heat exchange plate 2 is configured to cool the battery, the working fluid flows from the first terminal 221 through the first type region 26 and the second type region 27. To form a circulating flow, the working fluid can bend and change direction in the first type region 26, or the working fluid can bend and change direction in the second type region 27 to form a circulating flow, and finally flow from the second type region 27 to the second terminal 222, thereby causing the working fluid to circulate at least once through the first type region 26 and the second type region 27.

[0083] When the heat exchange plate 2 is configured to heat the battery, the working fluid flows from the second terminal 222 through the second type region 27 and the first type region 26. To form a circulating flow, the working fluid can bend and change direction in the second type region 27, or the working fluid can bend and change direction in the first type region 26 to form a circulating flow, and finally flow from the first type region 26 to the first terminal 221, thereby circulating the working fluid at least once through the first type region 26 and the second type region 27.

[0084] Optionally, at least a portion of the flow path 21 is a curved flow path.

[0085] Specifically, when the working fluid flows into the heat exchange plate 2, the flow paths 21 in the first type region 26 and the second type region 27 can be arranged as curved flow paths in order to fully utilize the heat exchange effect of the working fluid during the phase change and to avoid the working fluid flowing linearly into and out of the flow path 21. For example, the flow paths 21 in the first type region 26 and the second type region 27 can be arranged as circulating zigzag flow paths or annular flow paths to increase the length of the flow paths 21 in the heat exchange plate 2, thereby increasing the effective heat exchange area of ​​the heat exchange plate 2 and increasing the amount of heat exchanged by the heat exchange plate 2 for the battery.

[0086] Optionally, referring to Figure 5, the first end portion 221 and the second end portion 222 are located on the same side of the heat exchange plate 2.

[0087] Specifically, the shape of the heat exchange plate 2 can match the shape structure of the battery (which may refer to the shape of the larger surface of the battery). For example, when exchanging heat for a rectangular battery, the heat exchange plate 2 can be set to be rectangular, and when exchanging heat for a diamond-shaped battery, the heat exchange plate 2 can be set to be diamond-shaped to ensure the desired heat exchange after the heat exchange plate 2 and the battery come into contact with each other. When the first end portion 221 and the second end portion 222 are located on the same side of the heat exchange plate 2, the working fluid can flow to another side of the heat exchange plate 2 (different from the side where the first end portion 221 and the second end portion 222 are located) and to the intermediate region of the heat exchange plate 2, regardless of whether the working fluid enters the heat exchange plate 2 from the first end portion 221 or from the second end portion 222. This facilitates the circulating flow of the working fluid in the heat exchange plate 2 and improves the amount of heat exchanged by the heat exchange plate 2 for the battery.

[0088] In certain embodiments, the heat exchange plate 2 is rectangular, coinciding with a rectangular battery. The first end portion 221 and the second end portion 222 are located on the short side of the heat exchange plate 2 and are close to each other. When the working fluid enters the heat exchange plate 2 from the first end portion 221 or the second end portion 222, it can flow through the two long sides of the heat exchange plate 2, the other short side, and the intermediate region of the heat exchange plate 2, and finally flow out of the heat exchange plate 2 from the second end portion 222 or the first end portion 221, forming a circulating flow of the working fluid in the heat exchange plate 2.

[0089] Optionally, referring to Figures 13 and 14, the heat exchange plate 2 includes an inlet and outlet assembly 22, with a first end portion 221 and a second end portion 222 located in the inlet and outlet assembly 22.

[0090] Specifically, the inlet and outlet assembly 22 has a first terminal 221 and a second terminal 222, which are connected to the two ends of the flow path 21, respectively, and the first terminal 221 and the second terminal 222 can be configured to connect the heat exchange plate 2 to an external component that provides the working fluid. For example, to ensure flow stability of the working fluid in the heat exchange plate 2, an external pump can be connected to the heat exchange plate 2 through the first terminal 221 and the second terminal 222.

[0091] Referencing optionally to Figures 3 and 4, the heat exchange plate includes a first type region 26 and a second type region 27, with flow paths distributed in the first type region 26 and the second type region 27.

[0092] The first type region 26 includes a first partition 261 and a second partition 262.

[0093] The second type region 27 includes the first partition region 271, which is located between the first partition 261 and the second partition 262.

[0094] When the heat exchange plate 2 is configured to exchange heat for the battery, the working medium circulates at least once through the first partition 261, the first partition area 271, and the second partition 262.

[0095] The first type region 26 is positioned corresponding to the post region of the battery, and the second type region 27 is positioned corresponding to the non-post region of the battery.

[0096] Specifically, to improve the efficiency of heat exchange between the working fluid and the battery when the working fluid flows within the first partition 261, the first partition region 271, and the second partition 262, the flow path 21 within the first partition 261, the first partition region 271, and the second partition 262 can be arranged as a circulating flow path. For example, the flow path 21 may bend to form one or more circulating flow paths after changing direction multiple times within the first partition 261, the first partition region 271, and the second partition 262, thereby circulating the working fluid once or multiple times within the first partition 261, the first partition region 271, and the second partition 262, thereby improving the heat exchange efficiency of the heat exchange plate 2.

[0097] When the heat exchange plate 2 is configured to exchange heat for the battery, the first type region 26 corresponds to the region in the battery where the battery core generates higher heat, and the second type region 27 corresponds to the region in the battery where the battery core generates lower heat. In the embodiment shown in Figures 5 and 6, the battery cores of the battery can be arranged in two rows. Since posts are typically located at the two ends of the battery core for electrical connections, the post regions at the two ends of the battery formed by the battery core generate higher heat, while the intermediate region of the body of the battery core generates lower heat. The first type region 26 can be arranged to correspond to the post regions at the two ends of the battery, and the second type region 27 can be arranged to correspond to the non-post region in the middle of the battery.

[0098] Optionally, the post region of the battery may include a positive electrode position and a negative electrode position, where the positive and negative electrode positions are located at the two ends of the battery, respectively, so that the first partition 261 faces the positive electrode position and the second partition 262 faces the negative electrode position.

[0099] In one embodiment, when the heat exchange plate 2 cools the battery through the working medium, the working medium flows simultaneously from the flow paths 21 of the first partition 261 and the second partition 262, which are separated from each other, into the flow path 21 of the second type region 27 (in this case, the flow paths 21 of the first partition 261 and the second partition 262 may have separate independent working medium inlets). In this case, the working medium may be a low-temperature working medium. The low-temperature, low-pressure working medium first cools the positive and negative electrode locations of the battery, which generate more heat, and then cools other areas of the battery to ensure temperature uniformity of the battery.

[0100] When the heat exchange plate 2 heats the battery through the working medium, the working medium flows from the flow path 21 of the second type region 27 to the flow paths 21 of the first partition 261 and the second partition 262. In this case, the working medium may be a high-temperature working medium, which first heats the regions of the battery that generate lower heat, other than the positive and negative electrode locations, and then heats the positive and negative electrode locations of the battery to ensure temperature uniformity of the battery.

[0101] In another embodiment, when the heat exchange plate 2 cools the battery through the working medium, the working medium can flow from the flow path 21 of the first partition 261 to the flow path 21 of the second partition (in this case, the flow paths 21 of the first partition 261 and the second partition 262 may share one working medium inlet), and from the flow path 21 of the second partition 262 to the flow path 21 of the second type region 27.

[0102] Specifically, all working fluid flowing through the first partition 261 and the second partition 262 converges into the flow path 21 of the second type region 27. When the heat exchange requirement of the first partition 261 is higher than that of the second partition 262, in order to improve the heat exchange flexibility of the heat exchange plate 2 in the battery, the working fluid in the first partition 261 first flows through the second partition 262 and then flows back to the second partition 262, and the working fluid in the second partition 262 can flow directly into the flow path 21 of the second type region 27.

[0103] In one embodiment, the left longitudinal region of Figure 3 belongs to the second partition 262 of the first type region 26, the middle longitudinal region belongs to the first partition region 271 of the second type region 27, and the right longitudinal region also belongs to the first partition 261 of the first type region 26, thereby ensuring the amount of heat exchanged by the heat exchange plate 2 for the battery, the first type region 26 corresponds to the region that generates higher heat, and the second type region 27 corresponds to the region of the battery that generates lower heat.

[0104] Furthermore, the first terminal portion 221 and the second terminal portion 222 are positioned on the side of the first partition 261 away from the second partition 262, thereby allowing the working medium to pass sequentially through the first partition 261, the first partition region 271, and the second partition 262, and flow into the heat exchange plate. Both the first partition 261 and the second partition 262 belong to the corresponding regions of the battery that generate higher heat. Therefore, the first partition 261 and the second partition 262 are interchangeable in structure and function. For example, the first terminal portion 221 and the second terminal portion 222 are positioned on the side of the second partition 262 away from the first partition 261, which also enables efficient heat exchange of the heat exchange plate 2 for the battery. Furthermore, the interchangeability of the first type region 26 on the two sides of the second type region 27 can also be applied to the structure of the heat exchange plate 2 formed by multiple groups of the first type region 26 and the second type region 27.

[0105] In addition, the heating of the battery electrode core is usually constant. Regardless of the external environment and whether the battery is discharged or charged, as shown in Figure 2, the portion of the battery core where posts and electrical connections are located is always a region that generates higher heat, while the intermediate region of the battery core generates moderate heat, i.e., the portion of the battery core without electrical connections and posts does not generate heat easily. When heating is required, the region of the battery core without posts is often cooler and requires more heat. When cooling is required, the region of the battery core with posts is often hotter and requires better cooling. The advantage of this design is that the flow paths of the heat exchange plate are arranged based on the operating characteristics of the battery core in the battery according to different regions of the structure that generate different heat. Furthermore, the flow direction of the working fluid used in heating mode and cooling mode is reversed. During heat dissipation, the working fluid first flows along the flow path to regions with higher heat. During heating, the working fluid first flows along the flow path to regions with lower heat. This allows the working fluid to maintain high efficiency in heat exchange with the regions of the battery that generate higher heat.

[0106] When the battery core of the battery is positioned in a different way, or when the battery core is electrically connected in a different way, the position and number of the first type region 26 and the second type region 27 will differ. This technical solution uses the case shown in Figures 3 and 4 as an example. Figures 3a and 4a are schematic diagrams of the flow direction of the flow channels in the heat exchange plate 2. Figures 3b and 4b are schematic diagrams of the region division of the heat exchange plate 2. The design characteristics of this part will be described. Optionally, referring to Figure 3, The first type region 26 includes a fourth sub-region 2622, The second type region 27 includes a second partition region 272.

[0107] When the heat exchange plate 2 is configured to cool the battery, the working fluid flows from the first terminal through the fourth sub-region 2622, the second partition region 272, and the fourth sub-region 2622, and flows from the fourth sub-region 2622 to the second terminal.

[0108] When the heat exchange plate 2 is configured to heat the battery, the working fluid flows from the second terminal through the fourth sub-region 2622, the second partition region 272, and the fourth sub-region 2622, and flows from the fourth sub-region 2622 to the first terminal.

[0109] Specifically, the heat exchange plate 2 may include a fourth sub-region 2622 and a second partition region 272 arranged adjacent to each other, and the first end portion 221 and the second end portion 222 may be located on the side of the fourth sub-region 2622, away from the second partition region 272. The heat exchange plate 2 is configured to exchange heat for the battery with the post on a single side.

[0110] When the heat exchange plate 2 is configured to cool the battery, the working fluid flows from the first terminal 221 through the fourth sub-region 2622, the second partition region 272, and back through the fourth sub-region 2622. The working fluid in the fourth sub-region 2622 can rapidly cool areas of the battery that generate higher heat, and then the working fluid in the second partition region 272 cools areas of the battery that generate lower heat. Finally, the working fluid flows from the fourth sub-region 2622 to the second terminal 222.

[0111] When the heat exchange plate 2 is configured to heat the battery, the working fluid flows from the second terminal through the fourth sub-region 2622, the second partition region 272, and the fourth sub-region 2622, and flows from the fourth sub-region 2622 to the first terminal.

[0112] In addition, the first terminal portion 221 and the second terminal portion 222 can also be located on the fourth sub-region 2622 and the second partition region 272, respectively, so that when the heat exchange plate 2 is configured to cool the battery, the working fluid flows from the first terminal portion 221 through the fourth sub-region 2622 and the second partition region 272. When the heat exchange plate 2 is configured to heat the battery, the working fluid flows from the second terminal portion through the second partition region 272 and the fourth sub-region 2622. Thus, when cooling the battery, the low-temperature working fluid flows from the fourth sub-region 2622 corresponding to the high-temperature region of the battery to the second partition region 272 corresponding to the low-temperature region of the battery. When heating the battery, the high-temperature working fluid flows from the second partition region 272 corresponding to the low-temperature region of the battery to the fourth sub-region 2622 corresponding to the high-temperature region of the battery.

[0113] Referencing Figure 3, optionally, the first type region 26 includes a fourth sub-region 2622 and a second sub-region 2612.

[0114] The second type region 27 includes a second partition region 272, which is located between the fourth sub-region 2622 and the second sub-region 2612.

[0115] When the heat exchange plate 2 is configured to cool the battery, the working fluid flows from the first terminal to the fourth sub-region 2622, the second partition region 272, and the second sub-region 2612, then flows back from the second sub-region 2612 to the second partition region 272 and the fourth sub-region 2622, and then flows back to the terminal 2.

[0116] When the heat exchange plate 2 is configured to heat the battery, the working fluid flows from the second terminal to the fourth sub-region 2622, the second partition region 272, and the second sub-region 2612, then flows back from the second sub-region 2612 to the second partition region 272 and the fourth sub-region 2622, and then flows into the terminal 1.

[0117] Specifically, the first termination portion 221 and the second termination portion 222 may be located on the side of a fourth sub-region 2622, away from the second partition region 272. The heat exchange plate 2 is configured to exchange heat for the battery with posts on the two sides.

[0118] When the heat exchange plate 2 is configured to cool the battery, the working fluid flows from the first terminal 221 through the fourth sub-region 2622, the second partition region 272, and the second sub-region 2612. The working fluid in the fourth sub-region 2622 and the second sub-region 2612 can rapidly cool areas of the battery that generate higher heat, and then the working fluid in the second partition region 272 cools areas of the battery that generate lower heat. Finally, the working fluid flows back from the second sub-region 2612 to the second partition region 272 and the fourth sub-region 2622, and then flows into the second terminal 222.

[0119] When the heat exchange plate 2 is configured to heat the battery, the working fluid flows from the second terminal to the fourth sub-region 2622, the second partition region 272, and the second sub-region 2612, then flows back from the second sub-region 2612 to the second partition region 272 and the fourth sub-region 2622, and then flows into the terminal 1.

[0120] In addition, two first terminal portions 221 may be provided, and these two first terminal portions 221 may be located on the fourth sub-region 2622 and the second sub-region 2612, respectively, with the second terminal portion 222 located on the second partition region 272.

[0121] Optionally, the heat exchange plate includes multiple heat exchange modules, the working fluid circulates between the multiple heat exchange modules, and the working fluid circulates at least once in each of the heat exchange modules.

[0122] Specifically, referring to Figures 5 and 6, the heat exchange plate 2 includes a first heat exchange module and a second heat exchange module. The first and second heat exchange modules are spaced apart from each other, and at least a portion of the flow path 21 is curved in each of the first and second heat exchange modules, so that the working fluid circulates at least once in the first heat exchange module and at least once in the second heat exchange module.

[0123] Specifically, when the heat exchange plate 2 exchanges heat for the battery, the first type region 26 and the second type region 27 on the heat exchange plate 2 may correspond to the heat-generating regions of the battery in order to ensure the heat exchange effect of the heat exchange plate 2 for the battery. The actual structure of the battery may consist of a group of battery cores, or it may consist of multiple groups of arranged battery cores. For example, when the heat exchange plate 2 exchanges heat for a battery composed of two groups of battery cores, the heat exchange plate 2 can be divided into a first heat exchange module and a second heat exchange module. The first heat exchange module corresponds to one group of battery cores, and the second heat exchange module corresponds to the other group of battery cores. In addition, at least a portion of the flow path 21 is curved in each of the first and second heat exchange modules, thereby increasing the area for arranging the flow path 21 in the first and second heat exchange modules. This increases the effective heat exchange area of ​​the heat exchange plate 2 and the amount of heat exchanged by the heat exchange plate 2 for the battery.

[0124] In one embodiment, referring to Figures 5 and 6, each heat exchange module includes a first type region 26 and a second type region 27.

[0125] The first type region 26 includes a third sub-region 2621, a first sub-region 2611, a fourth sub-region 2622, and a second sub-region 2612.

[0126] The second type area 27 includes the first partitioned area 271 and the second partitioned area 272.

[0127] The first partition region 271 is located between the third sub-region 2621 and the first sub-region 2611, thereby forming the first heat exchange module. Simultaneously, the second partition region 272 is located between the fourth sub-region 2622 and the second sub-region 2612, thereby forming the second heat exchange module. Furthermore, the first sub-region 2611 and the fourth sub-region 2622 are arranged adjacent to each other, thereby ensuring that the first and second heat exchange modules are arranged adjacent to each other, thereby ensuring that the heat exchange plate 2 effectively exchanges heat for the battery, which is composed of multiple groups of battery cores.

[0128] In one embodiment, as shown in Figure 5, the flow path 21 includes a first flow convergence end and a second flow convergence end. The first flow convergence end is a connection point where the flow path 21 converges to a first terminal 221. The second flow convergence end is a connection point where the flow path 21 converges to a second terminal 222.

[0129] When the heat exchange plate 2 is configured to cool the battery, the working fluid can flow into the heat exchange plate 2 from the first flow convergence end. The working fluid in the flow path 21 preferentially flows into the first type region 26 corresponding to the region of the battery having a higher temperature, thereby cooling the high-temperature region of the battery, and then flows into the second type region 27. Finally, the working fluid can flow out from the second flow convergence end after convergence.

[0130] When the heat exchange plate 2 is configured to heat the battery, the working fluid can flow into the heat exchange plate from a second flow convergence end. The working fluid in the flow path preferentially flows into the second type region 27 corresponding to the region of the battery having a lower temperature, thereby heating the low-temperature region of the battery, and then flows into the first type region 26. Finally, the working fluid can flow out from the first flow convergence end after convergence. Prioritizing heating at the location corresponding to the second type region 27 can better protect the battery and provide a sufficient operating temperature for the battery. In particular, when the battery has a self-heating function, the heat exchange plate can cooperate with the self-heating function to provide better thermal protection to the central region of the electrode core, where it is difficult to generate heat to prevent excessively low temperatures.

[0131] In practical applications, as shown in Figure 5, the first and second flow convergence ends are concentrated on the left side of the heat exchange plate 2. When arranging the flow channels 21, it may not be possible to arrange the flow channels in the ideal manner described above due to limitations in panel space. In the embodiment shown in Figure 5, of the three regions located on the right side—the fourth sub-region 2622, the second partition region 272, and the second sub-region 2612—the second partition region 272 can be preferentially heated, or the fourth sub-region 2622 and the second sub-region 2612 can be preferentially cooled according to the preferred arrangement of the flow channels. In the three regions on the left side near the flow convergence ends—the first partition region 271, the third sub-region 2621, and the first sub-region 2611—the above preferred arrangement cannot be implemented due to the relative density of the flow channels 21. In this regard, the following embodiments can be adopted. In other words, the flow path 21 is introduced from the first flow convergence end, then first into the first sub-region 2611, then extends into two regions, the first partition region 271 and the third sub-region 2621, and finally returns to the second flow convergence end.

[0132] Optionally, referring to Figure 5, in the first heat exchange module, when the heat exchange plate 2 is configured to exchange heat for the battery, the working medium circulates at least once in the flow paths of the third sub-region 2621, the first partition region 271, and the first sub-region 2611.

[0133] When the working fluid flows within the third sub-region 2621, the first partition region 271, and the first sub-region 2611, the flow path 21 within the third sub-region 2621, the first partition region 271, and the first sub-region 2611 can be arranged as a circulating flow path to improve the efficiency of heat exchange between the working fluid and the battery. For example, when extending through the third sub-region 2621, the first partition region 271, and the first sub-region 2611, the flow path 21 may change direction in the third sub-region 2621, then extend to the first partition region 271, then extend from the first partition region 271 to the third sub-region 2621, and then change direction again. The flow path 21 bends to form one or more circulation paths after changing direction multiple times in the third sub-region 2621, the first partition region 271, and the first sub-region 2611, thereby circulating the working medium once or multiple times in the third sub-region 2621, the first partition region 271, and the first sub-region 2611, thereby improving the heat exchange efficiency of the heat exchange plate 2.

[0134] Optionally, in the second heat exchange module, the first terminal 221 may be connected to a fourth sub-region 2622, and the second terminal 222 may be connected to a second partition region 272.

[0135] When the heat exchange plate 2 is configured to cool the battery, the working fluid flows from the first terminal 221 into the first heat exchange module, through the first heat exchange module into the fourth sub-region 2622, the second partition region 272, and the second sub-region 2612, from the fourth sub-region 2622 and the second sub-region 2612 into the second partition region 272, and then into the terminal 222.

[0136] When the heat exchange plate 2 is configured to heat the battery, the working fluid flows from the second terminal portion 222 into the second partition region 272, from the second partition region 272 into the fourth sub-region 2622 and the second sub-region 2612, and then into the first terminal portion 221.

[0137] Optionally, the flow path 21 includes flow branching points 212, the first terminal portion 221 is located on one side of the third sub-region 2621, and the number of flow branching points 212 in the third sub-region 2621 is greater than the number of flow branching points 212 in the first partition region 271.

[0138] Specifically, the first terminal portion 221 is positioned on one side of the third sub-region 2621. When the heat exchange plate 2 is configured to cool the battery, the working fluid can pass through the first terminal portion 221 at a low temperature and then flow through the third sub-region 2621 and the first partition region 271 in sequence. For example, the working fluid passing through the first terminal portion 221 is in a liquid state. When the number of flow branching points 212 in the third sub-region 2621 is greater than the number of flow branching points 212 in the first partition region 271, more flow branching points 212 can be positioned in the third sub-region 2621, that is, in the flow process of the working fluid in the third sub-region 2621, the flow branching points 212 can increase the flow path. In addition, the liquid state of the working fluid ensures a balanced distribution during branching, which can improve the temperature uniformity of the heat exchange plate 2 during heat exchange.

[0139] Furthermore, when the heat exchange plate 2 is configured to cool the battery, the flow branching point 212 can be configured to branch, and when the heat exchange plate 2 is configured to heat the battery, the flow branching point 212 can be configured to converge due to the reverse direction of the working medium in the flow path.

[0140] Optionally, the number of flow junctions 212 in the first type region 26 is greater than the number of flow junctions 212 in the second type region 27.

[0141] Specifically, when the heat exchange plate 2 is configured to cool the battery, the working fluid flows at a low temperature from the first terminal 221 through the first type region 26 and the second type region 27, and then flows from the second type region 27 to the second terminal 222. For example, the working fluid is in a liquid state when it flows from the first terminal 221 through the first type region 26. When the number of flow branching points 212 in the first type region 26 is greater than the number of flow branching points 212 in the second type region 27, more flow branching points 212 can be placed in the first type region 26, that is, in the flow process of the working fluid in the first type region 26, the flow branching points 212 can increase the flow path. Also, the liquid state of the working fluid ensures a balanced distribution during branching.

[0142] In one embodiment, when the heat exchange plate 2 is configured to exchange heat for the battery, the flow path 21 performs the first branching into the third sub-region 2621. That is, the flow branching point 212 can converge or branch when the working fluid flows into the third sub-region 2621. Also, when the flow branching point 212 in the third sub-region 2621 is configured to branch, the liquid working fluid can be branched by the flow branching point 212 to ensure a balanced distribution of the working fluid during branching.

[0143] When the heat exchange plate 2 is optionally configured to cool the battery, the flow path branches once in the third sub-region 2621, then branches a second time in the first sub-region 2611, and converges for the first time.

[0144] When the heat exchange plate 2 is configured to heat the battery, the flow path branches in the first sub-region 2611, then undergoes a first convergence in the first sub-region 2611, and a second convergence in the third sub-region 2621.

[0145] When the heat exchange plate 2 is optionally configured to cool the battery, the flow path branches in a fourth sub-region 2622 and a second sub-region 2612, and then converges in a second partition region 272.

[0146] When the heat exchange plate 2 is configured to heat the battery, the flow path branches in the second partition region 272 and then converges in the sub-region 4 2622 and the second sub-region 2612.

[0147] As shown in Figures 5 and 6, when the heat exchange plate 2 is located in the left region adjacent to the first terminal portion 221 and the second terminal portion 222, i.e., in the first heat exchange module formed by the first partition region 271, the third sub-region 2621, and the first sub-region 2611, the flow paths 21 of the first heat exchange module are dense when the space of the first heat exchange module is close to the first terminal portion 221 and the second terminal portion 222. Therefore, in this solution, it is preferable to place flow branching points in the two regions of the third sub-region 2621 and the first sub-region 2611. These two regions correspond to the high-heat regions of the battery. Performing branching and convergence in these regions helps to reduce the high-speed and concentrated heat exchange of the working fluid in a narrow space, thereby allowing the working fluid to perform heat exchange more evenly in these regions.

[0148] For example, the working medium flowing from the first flow convergence end may converge at the corner of the third sub-region 2621, where the first branching occurs, and then a second branching may occur at the top of the first sub-region 2611. Subsequently, some flow paths may branch again at the bottom of the first partition region 271, while others do not need to branch. Finally, when the flow paths extend to the bottom of the third sub-region 2621, the flow paths can converge and then return to the second flow convergence end. Typically, flow convergence can be performed once or twice. The above description uses cooling as an example. During heating, the forms of branching and convergence are completely opposite.

[0149] Optionally, as shown in Figures 5 and 6, the right-hand region away from the first and second terminals 221 and 222, i.e., the second heat exchange module formed by the second partition region 272, the fourth sub-region 2622, and the second sub-region 2612, provides relatively more space for flow path arrangement. This solution allows for a preferential and even distribution of flow branching points at the upper and lower ends of the three regions, and the number of flow branching and convergence points can be correspondingly increased. Using the cooling solution as an example, the flow path extending from the first flow convergence end on the left side to the right side can branch separately and extend into the fourth sub-region 2622 and the second region 2612. In these two regions, the flow path can extend linearly and can extend longitudinally over most of the area of ​​the two regions. Next, the flow path can bend toward the second partition region 272 between the fourth sub-region 2622 and the second sub-region 2612. The flow path typically extends linearly through the second partition region 272, and eventually, the parallel flow paths converge on the lower side of the second partition region 272. Finally, the flow path extends to the left and returns to the second flow convergence end.

[0150] In this solution, the flow path can branch two or three times to achieve the layout characteristics of a large area, parallel and long-distance extension. The flow path then converges two or three times to converge to the main body and returns to the flow convergence end. Similarly, in the heating mode, the working fluid flows in from the second flow convergence end and flows directly to the lower part of the second partition region 272, branching multiple times to form multiple parallel paths.

[0151] Optionally, referring to Figure 3, at least a portion of the flow path 21 branches at least once in the process of extending from the first partition 261 to the first partition region 271, and the flow path 21 converges at least once in the process of extending from the first partition 261 to the first partition region 271.

[0152] In particular, the working fluid in this solution can be preferentially selected as a cooling working fluid that can be switched between gas and liquid phases. This type of cooling working fluid can effectively perform heat exchange through phase state changes and has higher heat exchange efficiency than conventional water cooling, coolants, and other methods. This cooling solution is used as an example. When at least a portion of the flow path 21 branches at least once in the process of extending from the first partition 261 to the first partition region 271, more flow paths can be arranged on the heat exchange plate to increase the heat exchange efficiency of the heat exchange plate. When the flow paths converge at least once in the process of extending from the first partition 261 to the first partition region 271, the terminal portions of the flow paths on the heat exchange plate can be concentrated, improving the structural compactness of the heat exchange plate.

[0153] In contrast, if the cooling working fluid becomes concentrated in one region due to a phase state change in the cooling working fluid and experiences a significant phase change, other regions will not be able to achieve a good heat exchange effect. In this regard, this solution improves the uniformity of the working fluid flow in the flow channels by using flow branching methods such as branching one flow channel into two, and branching two flow channels into four, as shown in the flow branching methods for regions a, b, c, and d in Figure 15. Furthermore, this solution uses multiple parallel flow channels of varying lengths as uniformly as possible to jointly perform heat exchange in the first type region and the second type region, further reducing concentrated phase changes of the working fluid caused by uneven flow.

[0154] Optionally, referring to Figure 12, the flow path 21 includes a main circulation flow path 100. The main circulation flow path 100 is distributed along the edge of the heat exchange plate, one end of the main circulation flow path 100 is connected to a first terminal 221, and the other end of the main circulation flow path 100 is connected to a second terminal 222, and the main circulation flow path 100 branches up to three times in the first type region 26.

[0155] Specifically, of the flow channels 21 introduced from the first terminal 221, the outermost flow channel 100 essentially branches once or twice and then does not branch again, instead circling around the outer edge of the heat exchange plate and finally converging again near the second terminal 222. These flow channels are configured to balance the temperature of the working fluid at the ends of the flow. These flow channels can play a particularly good role when a phase-change cooled working fluid is used. The volume of the working fluid changes significantly after the phase change, which can easily lead to problems such as deposition, poor circulation, and temperature concentration. This problem is likely to become very serious at the flow convergence end. The working fluid in the outermost circulating flow channel can branch fewer times, thereby having a relatively small phase change in the working fluid in the outermost flow channel, and can be configured to balance the temperature and phase state of the working fluid in the other flow channels at the end of the entire circulation. This ensures the smoothness and uniformity of the entire circulation.

[0156] Optionally, referring to Figure 6, the heat exchange plate includes a first region, the first region corresponds to the battery protrusion region of the battery on the heat exchange plate, and the main circulation channel 100 is located on the outer periphery of the battery protrusion region.

[0157] Specifically, the first region may be the battery covering region shown in Figure 6. When the trunk circulation channel 100 is located on the outer periphery of the battery protruding region, the trunk circulation channel can not only exchange heat for the region around the battery, but also ensure heat exchange for the heat exchange plate for the entire battery and improve the heat exchange efficiency of the heat exchange plate.

[0158] The main circulation channel 100 may be used as the first circulation channel in the heat exchange plate. In the middle section of the heat exchange plate, a second circulation channel 200, a third circulation channel 300, and a fourth circulation channel 400 can also be formed, as shown in Figures 7 and 8.

[0159] Referring to Figure 9, the direction change point 211 is formed at the direction change position of the flow channel 21. The direction change point includes a first type direction change point 2111 and a second type direction change point 2112. The flow channel direction at one end of the second type direction change point 2112 forms a direction change angle with the flow channel direction at the other end of the first type direction change point 2111. To achieve flexible direction changes of the flow channel 21 and to ensure the distribution density of the flow channel 21 in the heat exchange plate, the flow channel 21 can bend by a certain direction change angle when passing through the second type direction change point 2112, for example, by 90° or 180°.

[0160] Referring to Figure 10, the flow junction 212 includes the first-stage flow junction 2121 and the second-stage flow junction 2122. The branch includes the first-stage branch. The first-stage flow junction 2121 is connected between the main body and the first-stage branch. The branch includes the second-stage branch. The second-stage flow junction 2122 is connected between the first-stage branch and the second-stage branch.

[0161] Optionally, the heat exchange plate is A flow path 21, wherein the flow path is located within a heat exchange plate, and the flow path is configured to allow a heat exchange working medium to flow through the flow path, The system includes a first terminal portion 221 and a second terminal portion 222, wherein one end of the flow path is connected to the first terminal portion 221 and the other end of the flow path is connected to the second terminal portion 222, and the first terminal portion 221 and the second terminal portion 222 are configured to allow a heat exchange working medium to flow into a heat exchange plate.

[0162] The heat exchange plate includes a first type region 26, which is positioned corresponding to the post region of the battery. The flow path includes a flow branch point 212, which includes a first-stage flow branch point 2121, where at least one first-stage flow branch point is located within the first type region, and the first-stage flow branch point is located near a first or second terminal, and the flow branch point branches the flow path.

[0163] Specifically, the first type region 26 may correspond to a region in the battery where the battery core generates higher heat. Because the battery core needs to provide a post for electrical connections, the heat generated in the post region of the battery core during operation is higher and thus forms the post region of the battery. To improve the heat exchange efficiency of the heat exchange plate 2, the first type region 26 can be positioned to correspond to its post region of the battery, and the regions on the heat exchange plate other than the first type region can be positioned to correspond to the non-post regions of the body of the battery core on the battery.

[0164] Specifically, the number of flow channels at the two ends of the flow junction 212 is different. The flow channels at the two ends of the flow junction 212 can be used as the inlet and outlet of the working medium, respectively, and in the case of different heat exchanges of the heat exchange plate, the flow channel inlets and outlets at the two ends of the flow junction 212 can be switched to each other, thereby allowing the working medium to flow forward or backward at the flow junction 212.

[0165] In one embodiment, the flow path from the first terminal 221 to the second terminal 222 has at least two flow branching points 212, one of which is close to the first terminal and branches the flow path, and the other flow branching point 212 is close to the second terminal and converges the flow path.

[0166] Specifically, the two ends of the flow path 21 are either blocked or connected by screws to a first end 221 and a second end 222, respectively. The flow path 21 of the heat exchange plate extends from the first end 221 to the second end 222 after branching at least once and converging at least once. To form one or more flow branching points 212 on the flow path 21, the flow branching may be the branching of one flow path 21 into two, one flow path into three, or one flow path into more branches, and the flow convergence may be the convergence of two flow paths into one, three flow paths into one, or more flow paths into one.

[0167] In this disclosure, the flow path includes a flow branch point 212, the flow branch point includes a first-stage flow branch point 2121, at least one first-stage flow branch point is located within a first-type region, the first-stage flow branch point is located near a first or second terminal, and the flow branch point branches the flow path. The first-type region is a region corresponding to a post-region where the battery core generates higher heat in the battery. Therefore, the first-stage flow branch point can vary the number of flow paths to increase the distribution density of flow paths within the first-type region, thereby improving the heat exchange effect of the heat exchange plate.

[0168] Referencing optionally to Figures 16 and 17, the heat exchange plate includes a first heat exchange module 201 and a second heat exchange module 202, both of which include a first type region 26.

[0169] The first type region 26 of the first heat exchange module includes a third sub-region 2621 and a first sub-region 2611, and the first type region 26 of the second heat exchange module includes a fourth sub-region 2622 and a second sub-region 2612.

[0170] The first-stage flow bifurcation is located within a third sub-region 2621, the flow bifurcation further includes a second-stage flow bifurcation 2122, and the second-stage flow bifurcation is located within at least one of the first sub-region 2611, the second sub-region, and the fourth sub-region.

[0171] Specifically, when the heat exchange plate 2 exchanges heat for the battery, the first type region 26 on the heat exchange plate 2 may correspond to the post region of the battery in order to ensure the heat exchange effect of the heat exchange plate 2 for the battery. The actual structure of the battery may consist of a group of battery cores, or it may consist of multiple groups of arranged battery cores. For example, referring to Figure 6, when the heat exchange plate 2 exchanges heat for a battery composed of two groups of battery cores, the heat exchange plate 2 can be divided into a first heat exchange module and a second heat exchange module. The first heat exchange module corresponds to one group of battery cores, and the second heat exchange module corresponds to the other group of battery cores. In addition, at least a portion of the flow path 21 is curved in each of the first and second heat exchange modules, thereby increasing the area for arranging the flow path 21 in the first and second heat exchange modules. This increases the effective heat exchange area of ​​the heat exchange plate 2 and the amount of heat exchanged by the heat exchange plate 2 for the battery.

[0172] Specifically, the first heat exchange module may be the left region of Figure 5, and the second heat exchange module may be the right region of Figure 5. The first type region 26 of the first heat exchange module includes the third sub-region 2621 and the first sub-region 2611, and the first type region 26 of the second heat exchange module includes the fourth sub-region 2622 and the second sub-region 2612. The first terminal 221 and the second terminal 222 may be located in close proximity to the third sub-region 2621. The first stage flow branch point is a flow branch point in close proximity to the first terminal 221 and the second terminal 222 in the flow path, thereby positioning the first stage flow branch point within the third sub-region 2621.

[0173] Optionally, the heat exchange plate is A heat exchange region and a battery region, wherein the heat exchange region is arranged around the battery region, and the battery region is the battery protruding region of the battery on the heat exchange plate, A flow path 21 is provided, the flow path 21 is located within a heat exchange plate, the flow path is configured to allow a heat exchange working medium to flow through the flow path, and the flow path includes a first type flow path and a second type flow path.

[0174] The first type of channel is located in the heat exchange region, while the second type of channel is distributed in the battery region.

[0175] Specifically, when the flow path 21 extends within the heat exchange plate, the outermost first type flow path essentially branches once or twice and then ceases to branch, circling around the outer edge of the heat exchange plate and finally converging again near the flow path outlet. These flow paths are configured to balance the temperature of the working fluid at the ends of the flow. These flow paths can play a particularly good role when a phase-change cooled working fluid is used. The volume of the working fluid changes significantly after the phase change, which can easily lead to problems such as deposition, poor circulation, and temperature concentration. This problem is likely to become very serious at the flow convergence end. The working fluid in the outermost circulating flow path can branch fewer times, thereby having a relatively small phase change in the working fluid in the outermost flow path, and can be configured to balance the temperature and phase state of the working fluid in the other flow paths at the end of the entire circulation. This ensures smoothness and uniformity of the entire circulation.

[0176] When the first type of flow path surrounds the battery region and is located on the outer periphery of the battery protruding region, the first type of flow path can not only exchange heat for the region around the battery, but also ensure heat exchange for the heat exchange plate for the entire battery and improve the heat exchange efficiency of the heat exchange plate.

[0177] The first type of flow path may be used as the first circulation flow path in the heat exchange plate. In the middle section of the heat exchange plate, the second type of flow path, including the second, third, and fourth circulation flow paths, may also be formed to improve the heat exchange balance of the heat exchange plate.

[0178] Optionally, the length of the first type channel is shorter than the length of the second type channel, and / or The number of branches in the Type 1 channel is less than the number of branches in the Type 2 channel.

[0179] Specifically, the first type of flow path is located within the heat exchange region, that is, the first type of flow path orbits the outer edge of the heat exchange plate, thereby positioning the second type of flow path inside the first type of flow path. However, after the first type of flow path branches once or twice, it essentially no longer branches. Also, while the first type of flow path branches infrequently, the second type of flow path needs to branch and change direction multiple times on the heat exchange plate, thereby ensuring that the flow paths are evenly distributed on the heat exchange plate. Therefore, to ensure a balanced flow path distribution on the heat exchange plate, the length of the first type of flow path is shorter than the length of the second type of flow path, and the number of branches of the first type of flow path is fewer than the number of branches of the second type of flow path. One embodiment of the present disclosure further provides a battery pack comprising a heat exchange plate 2 and a plurality of battery cores 1. The two ends of each battery core are provided with posts. The plurality of battery cores are arranged along a first direction, and to increase the energy density of the battery pack, the first direction may be the X direction in Figure 1. The heat exchange plate is positioned on one or two sides of the battery core 1 along a second direction. The second direction may be the Z direction in Figure 1. Multiple battery core sides along the second direction form a large surface area of ​​the battery core. The heat exchange plate is positioned in close proximity to one or two large surfaces of the battery core, which ensures the heat exchange effect of the heat exchange plate for the battery core.

[0180] In addition, multiple battery cores 1 may form a first battery module 11 and a second battery module 12. The second battery module 12 is located on the side of the first battery module 11, away from the inlet and outlet assemblies 22. Specifically, the flow path of the first type region 26 may be facing the first battery module 11 and may be close to the inlet and outlet assemblies 22, i.e., the flow path of the first type region 26 is located at the near end of the heat exchange plate. The flow path 21 of the second type region 27 may be away from the inlet and outlet assemblies 22, i.e., the flow path of the second type region 27 is located at the far end of the heat exchange plate. To ensure a balanced heat exchange effect between the near and far ends of the heat exchange plate, the flow rate of the flow path 21 at the far end can be increased, for example, the flow rate of the flow path 21 in the opposite flow path 21 of the second battery module 12 may be set to a second flow rate, with the first flow rate being smaller than the second flow rate.

[0181] Optionally, the direction in which the posts at the two ends of the battery core 1 are connected is a third direction. The third direction may be the Y direction in Figure 1. The first, second, and third directions may be parallel to the width, height, and length directions of the battery core, respectively. When the first, second, and third directions are perpendicular to each other, the multiple battery cores may form a compact battery pack structure to ensure the energy density of the battery pack.

[0182] Optionally, the heat exchange plate is either a lower plate or an upper cover. Specifically, the heat exchange plate can be positioned on one or two sides of the battery core along a second direction. When the heat exchange plate can be positioned on one side of the battery core along a second direction, for example, when the heat exchange plate is positioned on the lower sides of multiple battery cores, the heat exchange plate can form the lower plate of the battery pack. On the one hand, when the heat exchange plate is in contact with the battery core, the heat exchange effect of the battery core can be ensured. On the other hand, the battery pack can be well protected when the bottom of the battery pack is subjected to impact. When the heat exchange plate is positioned on the upper sides of multiple battery cores, the heat exchange plate can form the upper cover of the battery pack. Similarly, when the heat exchange plate is in contact with the battery core, the heat exchange effect of the battery core can be ensured. On the other hand, the battery pack can be protected.

[0183] One embodiment of the present disclosure includes a heat exchange plate, or We provide vehicles that include a battery pack.

[0184] According to a third aspect, referring to Figures 3 to 18, an embodiment of the present disclosure provides a flow channel accumulation plate, and referring to Figure 18, the flow channel accumulation plate is The first region 28 and the second region 29, The system includes a channel 21, wherein the channel is distributed within a first region 28 and a second region 29, and the average distribution density of the channel 21 within the first region 28 is greater than the average distribution density of the channel 21 within the second region 29.

[0185] Specifically, the flow channel integration plate can be configured to cool or heat the battery. For example, when the flow channel integration plate cools the battery, a large amount of heat is generated at the positive and negative electrode locations during the battery's operation. That is, the flow channel integration plate needs to provide a better cooling effect to the positive and negative electrode locations of the battery. When the average distribution density of the flow channels 21 in the first region 28 is greater than the average distribution density of the flow channels 21 in the second region 29, the first region 28 can face the positive and negative electrode locations of the battery, and the second region 29 can face the middle part of the battery to improve the heat exchange effect of the flow channel integration plate for the battery.

[0186] Optionally, the width of the flow path 21 is less than 15 mm.

[0187] In particular, when faced with different heat exchange requirements at different locations, the heat exchange efficiency of the flow channel accumulating plate provided by the embodiments of this disclosure can be improved through different distribution densities of the flow channels 21, i.e., flow channels 21 having a narrower width can be used for heat exchange. The width of the flow channels 21 may be 3 mm to 12 mm. The width of the flow channels 21 is also the radial size of the flow channels 21. Optionally, to increase the distribution density of the flow channels 21, the width of the flow channels 21 can be set to 5 mm to 10 mm.

[0188] Optionally, the flow channel integration plate further includes a heat exchange plate 2.

[0189] According to a fourth aspect, referring to Figures 3 to 19, an embodiment of the present disclosure provides a flow channel accumulation plate, the flow channel accumulation plate is Flow channel plate 24 and A flow channel 21 is provided, the flow channel 21 is located on a flow channel plate 24, and the area for arranging the flow channel 21 in the plane on which the flow channel accumulation plate is located is greater than 70% of the area of ​​the flow channel plate 24.

[0190] Specifically, the ratio of the area for arranging the flow channels 21 in the flow channel plate 24 can be flexibly set according to the heat exchange target of the flow channel integration plate. For example, when exchanging heat for heat exchange targets such as batteries with high heat exchange requirements, the area for arranging the flow channels 21 can be set to 75%, 80%, 85%, 90%, or 95% of the area of ​​the flow channel plate 24 in order to improve the flexibility of heat exchange of batteries with different power and voltages.

[0191] Optionally, the width of the channel is less than 15 mm.

[0192] Specifically, when faced with different heat exchange requirements at different locations, the heat exchange efficiency of the flow channel accumulating plate provided by the embodiments of this disclosure can be improved through different distribution densities of flow channels, i.e., flow channels 21 having a narrower width can be used for heat exchange. The width of the flow channels 21 may be 3 mm to 12 mm. The width of the flow channels 21 is also the radial size of the flow channels 21. Optionally, to increase the distribution density of the flow channels 21, the width of the flow channels 21 can be set to 5 mm to 10 mm.

[0193] Optionally, the flow channel integration plate further includes a heat exchange plate 2.

[0194] In addition, the flow path 21 may be engraved in the heat exchange plate 2, and the battery module 1 may contain multiple cells. The heat exchange plate 2 cools the battery module 1 in the forward direction (direction of the working medium flow in the flow path 21) and heats the battery module in the reverse direction (direction of the working medium flow in the flow path 21), which can improve the cooling and heating operations of the battery module 1, ensure temperature uniformity of the battery module 1, and improve the heat exchange capacity of the heat exchange plate 2 for the battery module 1.

[0195] The flow channel 21 extends from the flow convergence end into the interior of the flow channel plate 24. The flow channel 21 is branched by flow branching / flow convergence points to form more stages of branch sections. These flow channels 21 are also then positioned through reversal points, and the branch sections cover the entire flow channel plate 24 to achieve heat exchange in each region.

[0196] As shown in Figure 19, the flow path plate 24 and the base plate 23 are combined to form a heat exchange plate 2. On the flow path plate 24, the flow path 21 may have a groove structure and may have an unsealed top surface. After the base plate 23 covers the flow path plate 24, the base plate 23 can form a top seal on the flow path 21. In this way, the base plate 23 and the flow path 21 together form the heat exchange plate 2. The first end portion 221 and the second end portion 222 can be formed by combining end portion components provided on the base plate 23 and the flow path plate 24. The end portion components are provided with the first end portion 221 and the second end portion 222. After the base plate 23 covers the flow path plate 24, the first and second flow convergence ends of the flow path 21 can be connected to the first end portion 221 and the second end portion 222.

[0197] According to the design philosophy of each feature of the heat exchange plate 2 in this solution, the solution can be divided into different sections. The different sections represent different technical features that the solution focuses on. The flow path 21 is designed based on the technical features that are being focused on in order to obtain a more uniform heat exchange solution.

[0198] While several specific embodiments of this disclosure have been described in detail through examples, those skilled in the art will understand that the above examples are for illustrative purposes only and are not intended to limit the scope of this disclosure. Those skilled in the art will understand that the above embodiments can be modified without departing from the scope and spirit of this disclosure. The scope of this disclosure is limited to the appended claims. [Explanation of Symbols]

[0199] 1 Battery Core 11. First battery module 12. Second battery module 2 Heat exchange plate 21 Flow channels 211 Turning Point 2111 Type 1 Directional Turning Point 2112 Type 2 Direction Change Point 212 Flow divergence point 2121 First flow branching point 2122 Second flow divergence point 22 Inlet and Outlet Assemblies 221 First Termination 222 Second Termination Section 26. Type 1 Domain 261 First partition 2611 First sub-region 2612 Second sub-region 262 Second partition 2621 Third sub-region 2622 Fourth sub-region 27. Type 2 Domain 271 First partition area 272 Second partition area 100 main circulation channels 200 Second circulation channel 300 Third circulation channel 400 The fourth circulation channel, 201 First heat exchange module 202 Second heat exchange module

Claims

1. A heat exchange plate applied to a battery, comprising a first terminal portion (221), a second terminal portion (222), and a flow path (21) connecting the first terminal portion (221) to the second terminal portion (222), The heat exchange plate (2) is configured to exchange heat for the battery, and the flow path is configured to allow the working medium to flow. When the heat exchange plate (2) is configured to cool the battery, the working medium flows from the first terminal (221) into the flow path (21) and flows out from the second terminal (222). When the heat exchange plate (2) is configured to heat the battery, the working medium flows from the second terminal (222) into the flow path (21) and flows out from the first terminal (221). Heat exchange plate.

2. When the heat exchange plate (2) is configured to cool the battery, the working fluid flows in from the first terminal (221) and preferentially flows through the first type region. When the heat exchange plate (2) is configured to heat the battery, the working medium flows in from the second terminal (222) and preferentially flows through the second type region. The heat exchange plate according to claim 1, wherein the first type region (26) is arranged in correspondence with the post region of the battery, and the second type region (27) is arranged in correspondence with the non-post region of the battery.

3. The flow path comprises a first flow path section connected to the first terminal (221) and a second flow path section connected to the second terminal (222). When the heat exchange plate (2) is configured to cool the battery, the working fluid flows in from the first terminal (221), flows continuously through the first flow path section and the second flow path section, and then flows out from the second terminal section, wherein in the first flow path section, the length of the flow path through the first type region is longer than the length of the flow path through the second type region, and in the second flow path section, the length of the flow path through the first type region is shorter than the length of the flow path through the second type region. The heat exchange plate (2) is configured to heat the battery, and the working medium flows in from the second terminal (222), flows continuously through the second flow path section and the first flow path section, and then flows out from the first terminal (221), wherein in the second flow path section, the length of the flow path that flows through the first type region is shorter than the length of the flow path that flows through the second type region, and in the first flow path section, the length of the flow path that flows through the first type region is longer than the length of the flow path that flows through the second type region, as described in claim 2.

4. The heat exchange plate according to claim 3, wherein the ratio of the length of the first flow channel to the length of the second flow channel is in the range of 0.5 to 5.

5. The heat exchange plate according to claim 2, wherein the ratio of the width of the second type region to the width of the first type region is in the range of 1 to 8.

6. The heat exchange plate according to claim 2, wherein the ratio of the width of the first type region to the length of the battery is in the range of 0.1 to 0.4, and the ratio of the width of the second type region to the length of the battery is in the range of 0.1 to 0.

6.

7. The heat exchange plate according to claim 1, wherein the first end portion (221) and the second end portion (222) are located on the same side of the heat exchange plate.

8. The heat exchange plate according to claim 7, comprising an inlet and outlet assembly (22), wherein the first end portion (221) and the second end portion (222) are located in the inlet and outlet assembly (22).

9. The device comprises a first type region (26) and a second type region (27), and the flow path is distributed in the first type region (26) and the second type region (27). The first type region (26) comprises a first partition (261) and a second partition (262), The second type region (27) comprises a first partition region (271), the first partition region (271) being located between the first partition (261) and the second partition (262), When the heat exchange plate (2) is configured to exchange heat for the battery, the working medium circulates at least once in the first partition (261), the first partition region (271), and the second partition (262). The heat exchange plate according to claim 3, wherein the first type region (26) is arranged in correspondence with the post region of the battery, and the second type region (27) is arranged in correspondence with the non-post region of the battery.

10. The first type region (26) comprises a fourth sub-region (2622), and the second type region (27) comprises a second partition region (272), When the heat exchange plate (2) is configured to cool the battery, the working medium flows from the first terminal (221) through the fourth sub-region (2622), the second partition region (272), and the fourth sub-region (2622), and flows from the fourth sub-region (2622) to the second terminal (222), The heat exchange plate (2) according to claim 3, wherein when the heat exchange plate (2) is configured to heat the battery, the working medium flows from the second terminal portion (222) through the fourth sub-region (2622), the second partition region (272), and the fourth sub-region (2622), and flows from the fourth sub-region (2622) to the first terminal portion (221).

11. The first type region (26) comprises a fourth sub-region (2622) and a second sub-region (2612), The second type region (27) comprises a second partition region (272), the second partition region (272) is located between the fourth sub-region (2622) and the second sub-region (2612), When the heat exchange plate (2) is configured to cool the battery, the working medium flows from the first terminal (221) into the fourth sub-region (2622), the second partition region (272), and the second sub-region (2612), flows back from the second sub-region (2612) into the second partition region (272) and the fourth sub-region (2622), and then flows into the second terminal (222). The heat exchange plate (2) according to claim 3, wherein when the heat exchange plate (2) is configured to heat the battery, the working medium flows from the second terminal portion (222) to the fourth sub-region (2622), the second partition region (272), and the second sub-region (2612), flows back from the second sub-region (2612) to the second partition region (272) and the fourth sub-region (2622), and then flows into the first terminal portion (221).

12. It comprises a first heat exchange module and a second heat exchange module, and both the first heat exchange module and the second heat exchange module are provided with the first type region (26) and the second type region (27), The first type region (26) comprises a third sub-region (2621), a first sub-region (2611), a fourth sub-region (2622), and a second sub-region (2612). The second type region (27) comprises a first partition region (271) and a second partition region (272), The heat exchange plate according to claim 3, wherein the first partition region (271) is located between the third sub-region (2621) and the first sub-region (2611), the second partition region (272) is located between the fourth sub-region (2622) and the second sub-region (2612), and the first sub-region (2611) and the fourth sub-region (2622) are arranged adjacent to each other.

13. The heat exchange plate according to claim 12, wherein in the first heat exchange module, when the heat exchange plate (2) is configured to exchange heat for the battery, the working medium circulates at least once in the flow path of the third sub-region (2621), the first partition region (271), and the first sub-region (2611).

14. In the second heat exchange module, When the heat exchange plate (2) is configured to cool the battery, the working medium flows from the first terminal (221) into the first heat exchange module, from the first heat exchange module into the fourth sub-region (2622) and the second sub-region (2612), from the fourth sub-region (2622) and the second sub-region (2612) into the second partition region (272), and then into the second terminal (222). The heat exchange plate (2) according to claim 12, wherein when the heat exchange plate (2) is configured to heat the battery, the working medium flows from the second terminal portion (222) into the second partition region (272), from the second partition region (272) into the fourth sub-region (2622) and the second sub-region (2612), and then flows into the first terminal portion (221).

15. The heat exchange plate according to claim 3, wherein the flow path includes a flow branching point (212), the flow branching point includes a first-stage flow branching point (2121), at least one first-stage flow branching point is located within the first type region, the first-stage flow branching point is located near the first or second end, and the flow branching point branches the flow path.

16. It comprises a first heat exchange module and a second heat exchange module, and both the first heat exchange module and the second heat exchange module are provided with the first type region (26), The first type region (26) of the first heat exchange module comprises a third sub-region (2621) and a first sub-region (2611), and the first type region (26) of the second heat exchange module comprises a fourth sub-region (2622) and a second sub-region (2612), The heat exchange plate according to claim 15, wherein the first-stage flow branch point is located within the third sub-region (2621), the flow branch point further comprises a second-stage flow branch point (2122), and the second-stage flow branch point is located in at least one of the first sub-region (2611), the second sub-region, and the fourth sub-region.

17. A heat exchange plate according to claim 3, comprising a heat exchange region and a battery region, wherein the heat exchange region is arranged around the battery region, the battery region is a battery protrusion region of a battery on the heat exchange plate, and the flow path comprises a first type flow path and a second type flow path, wherein the first type flow path is located within the heat exchange region and the second type flow path is distributed within the battery region.

18. The heat exchange plate according to claim 17, wherein the length of the first type flow path is shorter than the length of the second type flow path, and / or the number of branches of the first type flow path is less than the number of branches of the second type flow path.

19. A battery pack comprising the heat exchange plate (2) described in claim 1.

20. The heat exchange plate according to any one of claims 1 to 18, or A vehicle comprising the battery pack described in claim 19.

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