Heat exchange component for battery, battery module and battery pack

Abstract

The present application discloses a heat exchange component for a battery. [Solution] A heat exchange component for a battery includes a heat exchange body having a fluid channel provided therein and at least one heat exchange wall further installed thereon, where the heat exchange wall contacts the side of the battery cell and heat exchange occurs between the heat exchange wall and the fluid channel, and a plurality of protrusion structures, all of which are located on the side of the heat exchange wall close to the fluid channel, where two adjacent protrusion structures abut against each other to increase the heat exchange area of ​​the heat exchange body and strengthen the structural strength of the heat exchange body.

Description

[Technical Field]

[0001] This application claims priority to Chinese patent application No. 2022234666966 filed with the China Patent Office on December 20, 2022, and application No. 2022116392341 filed with the China Patent Office on December 20, 2022, the entire contents of which are incorporated herein by reference.

[0002] The present application relates to the field of batteries, and in particular to heat exchange components for batteries, battery modules and battery packs. [Background technology]

[0003] With the rapid development of new energy vehicles, users of pure electric vehicles have higher and higher requirements for vehicle range and charging rate, and the energy of the battery core is also increasing, which causes the heat generation of the battery core in operation to increase. Therefore, the cylindrical battery pack in the related art has the problem of high heat generation, and the cylindrical liquid cooling solution for the battery pack in the related art is relatively single, which has relatively poor heat exchange efficiency and can only solve the heat dissipation problem when the battery core is charged at a relatively low charging rate, and it is difficult to control the temperature to an ideal state under high charging rate conditions, which affects the service life of the battery core and poses a significant potential risk to driving safety. Summary of the Invention [Problem to be solved by the invention]

[0004] In order to overcome at least one of the drawbacks described in the above-mentioned prior art, the present application provides a heat exchange component for a battery, a battery module, and a battery pack that solve the heat dissipation problem caused by the poor heat exchange efficiency of conventional battery packs, thereby improving the service life of the battery core and the operating safety factor. [Means for solving the problem]

[0005] In a first aspect, the present application provides a method for producing a composition comprising: a heat exchange body having a fluid channel provided therein and further having at least one heat exchange wall disposed thereon, the heat exchange wall contacting a side surface of the battery cell and exchanging heat between the heat exchange wall and the fluid channel; and a plurality of protrusion structures, each of which is located on a side of the heat exchange wall closer to the fluid channel, wherein two adjacent protrusion structures abut against each other to increase the heat exchange area of ​​the heat exchange body and to strengthen the structural strength of the heat exchange body.

[0006] In a second aspect, the present application provides a method for producing a composition comprising: a heat exchange component for said battery; The present invention further discloses a battery module including: a battery pack located on one side of the heat exchange body of the heat exchange component, with a plurality of battery cells arranged along the extension direction of the fluid channels from one end of the heat exchange body, and each of the battery cells abutting the heat exchange wall of the heat exchange body.

[0007] In a third aspect, the present application further discloses a battery pack including a battery case and the above-mentioned battery module, wherein the battery module is assembled and fixed inside the battery case. [Effects of the Invention]

[0008] The clever installation of multiple abutting protrusion structures on the heat exchange wall increases the heat exchange area between the heat exchange medium and the heat exchange body, improving the heat exchange efficiency. This not only solves the heat dissipation problem caused by the relatively poor heat exchange efficiency of conventional battery packs, but also strengthens the structural strength of the heat exchange body and ensures stable heat dissipation between the heat exchange body and the battery cells, achieving the unexpected benefit of killing two birds with one stone and improving the service life and operating safety factor of the battery cells. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 2 is a first structural diagram of a heat exchange component for a battery according to the first embodiment of the present application; [Figure 2] FIG. 2 is a partially enlarged schematic view of a portion A in FIG. [Figure 3] FIG. 2 is a second structural view of the heat exchange component for the battery of the first embodiment of the present application. [Figure 4] FIG. 4 is a partially enlarged schematic view of a portion B in FIG. [Figure 5] 1 is a structural diagram of a heat exchange element according to a first embodiment of the present invention, and is shown in section. [Figure 6] FIG. 6 is a partially enlarged schematic view of a portion C in FIG. 5. [Figure 7] FIG. 2 is a diagram showing the water flow direction of the heat exchange component for the battery of the first embodiment of the present application. [Figure 8] FIG. 10 is a first overall structural diagram of a battery module according to a second embodiment of the present invention. [Figure 9] FIG. 10 is a second overall structural diagram of a battery module according to a second embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0010] In the description of this application, the orientations or positional relationships indicated by terms such as "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," and "outside" are based on the orientations or positional relationships shown in the drawings, and are merely for the convenience and simplification of the description of this application. They do not indicate or imply that the devices or elements referred to necessarily have a specific orientation, or are configured and operated in a specific orientation, and therefore should not be understood as limitations on this application.

[0011] The provision of multiple protrusion structures on the heat exchange wall of the heat exchanger not only significantly increases the heat exchange area between the heat exchange medium in the fluid channel and the heat exchanger, but also allows a large amount of heat released from the battery cells to be conducted through the heat exchange wall to each protrusion structure, and finally to the heat exchange medium via the protrusion structures, thereby significantly improving the heat exchange efficiency between the battery cells and the heat exchange medium. As the heat generated by the battery cells increases during operation, the heat exchanger can still ensure a highly efficient heat dissipation effect. This avoids the problem of heat accumulation caused by the installation of multiple battery cells in a battery pack, and ensures that each battery cell is within a relatively suitable temperature range. This is advantageous for balanced control of the temperature consistency of the battery pack when the number of battery cells and charging rate of the battery pack need to be increased.

[0012] More importantly, each protrusion structure corresponds to the reinforcing rib structure of the heat exchange body, and two adjacent protrusion structures abut against each other, which effectively improves the structural strength of the heat exchange component and reduces or prevents the heat exchange component from being extruded and deformed, thereby effectively ensuring the unexpected effect of stable heat exchange between the heat exchange component and the battery cell.

[0013] In one embodiment, each of the protruding structures extends from one end of the fluid channel along the extension direction of the fluid channel.

[0014] In one embodiment, the heat exchange body is provided with two heat exchange walls, which are located on opposite sides of the fluid channel.

[0015] In one embodiment, the cross section of the protruding structure is triangular.

[0016] In one embodiment, if the heat exchange wall is defined as being perpendicular to a horizontal plane, the direction along which the heat exchange wall is perpendicular to the horizontal plane is the height extension direction of the heat exchange wall, The interior of the heat exchange body is configured as a plurality of independent fluid channels, which are arranged along the height extension direction of the heat exchange wall, and the ends of two adjacent fluid channels are connected to form a serpentine channel.

[0017] In one embodiment, the heat exchange component for the battery further includes a main current collector, the main current collector having a main current collecting chamber, a water inlet end, and a water outlet end, the water inlet end and the water outlet end both communicating with the main current collecting chamber, the main current collector connected to an end of the heat exchange body, and the fluid channel communicating with the main current collecting chamber.

[0018] In one embodiment, a plurality of first flow blocking plates are installed between the ends of the fluid channels and the main current collector, and the main current collecting chamber is divided into a water supply chamber, a drain chamber, and at least one first flow exchange chamber via the plurality of first flow blocking plates, and two adjacent fluid channels are connected to their ends via each of the first flow exchange chambers, and one end of the serpentine channel is connected to the water supply end via the water supply chamber, and the other end of the serpentine channel is connected to the drain end via the drain chamber.

[0019] In one embodiment, the heat exchange component for the battery further includes a sub-current collector, the main current collector and the sub-current collector being connected to opposite ends of the heat exchange component, respectively; A sub-collector chamber is provided in the sub-collector, and at least one second flow interruption plate is provided between the end of the fluid channel and the sub-collector. The sub-collector chamber is divided into a plurality of second flow exchange chambers via at least one second flow interruption plate, and two adjacent fluid channels are connected to each other via each of the second flow exchange chambers.

[0020] In one embodiment, the heat exchange components are installed on both opposite sides of the battery pack, and the main current collectors of the two heat exchange components are electrically connected.

[0021] In one embodiment, the battery cell is a cylindrical battery core, and the heat exchange wall is arranged in a corrugated shape.

[0022] In one embodiment, the battery pack includes a plurality of the assembled batteries and a plurality of heat exchange components, each heat exchange component is installed between two adjacent assembled batteries, the assembled batteries are installed in an alternating arrangement, and the main current collectors of two adjacent assembled batteries are electrically connected.

[0023] Specifically, as shown in Figures 1 to 6, the present application discloses a heat exchange component 1 for a battery, which includes a heat exchange body 11, a fluid channel 111 is provided inside the heat exchange body 11, and at least one heat exchange wall 112 is further installed in the heat exchange body 11, the heat exchange wall 112 contacts the side of the battery cell, and the heat exchange wall 112 and the fluid channel 111 exchange heat. Specifically, the heat exchange body 11 is applied to heat exchange between battery cells, where the battery cells include cylindrical batteries and rectangular batteries. Considering that the heat exchange walls 112 of the heat exchange body 11 come into contact with the side walls of the battery cells to form a heat exchange surface, the cross section of the fluid channel 111 is rectangular, i.e., the side of the fluid channel 111 where the heat exchange walls 112 are installed is attached to the side of the battery cell. A heat exchange medium, such as water, is injected into the fluid channel 111 and flows through the fluid channel 111 until it is filled with the heat exchange medium. A temperature difference is created between the heat exchange medium and the battery cells, and a large amount of heat is transferred from the relatively high-temperature side to the relatively low-temperature side.

[0024] When the battery cell is in a charging or discharging state for a long period of time, or when the battery cell triggers thermal runaway, the temperature of the battery cell is relatively high. However, if a heat exchange medium with a relatively low temperature is transported inside the fluid channel 111, a large amount of heat released from the battery cell is transferred to the heat exchange medium in the fluid channel 111 through the heat exchange wall 112, and finally the heat exchange medium is transported from the heat exchange body 11 with a large amount of heat, thereby realizing heat dissipation to the battery cell.

[0025] If the battery cell is in a relatively low temperature environment for a long period of time, the temperature of the entire battery cell will decrease. However, if a heat exchange medium with a relatively high temperature is transported inside the fluid channel 111, the heat inside the heat exchange medium will be transferred to the battery cell via the heat exchange wall 112 as it flows through the battery cell.

[0026] To sum up, the temperature of the battery cells is adjusted via the heat exchanger 11, and the battery cells are always kept in an optimum temperature environment, thereby ensuring that the battery cells are always kept in an optimum operating condition.

[0027] When a relatively high heat exchange efficiency is required, the temperature difference between the heat exchange medium and the battery cell is generally increased by adjusting the temperature of the heat exchange medium or by adjusting the flow rate of the heat exchange medium. However, the key point of the present invention is as follows: The heat exchange component 1 further includes a plurality of protrusion structures 113, each of which is located on the side of the heat exchange wall 112 closer to the fluid channel 111, and two adjacent protrusion structures 113 abut against each other to increase the heat exchange area of ​​the heat exchange body 11 and strengthen the structural strength of the heat exchange body 11.

[0028] In this embodiment, due to the protrusion structures 113, when the heat exchange medium flows through any unit of the fluid channel 111, the contact area between the fluid medium and the protrusion structures 113 is larger than the area between the fluid medium and the heat exchange wall 112, i.e., the heat exchange area between the fluid medium and the heat exchange component 1 is increased. Furthermore, a large amount of heat released from the battery cells is transferred to the heat exchange body 11 and then conducted to each protrusion structure 113. The surfaces of each protrusion structure 113 and the planar structure of the heat exchange wall 112 form multiple diffusion surfaces, which are advantageous for the large amount of heat to be rapidly diffused into the heat exchange medium. Therefore, the multiple protrusion structures 113 achieve the purpose of rapidly improving the heat exchange efficiency.

[0029] Unexpectedly, since two adjacent protrusion structures 113 abut each other, on the one hand, each protrusion structure 113 corresponds to a reinforcing rib structure / stripe structure installed on the heat exchange body 11, but on the other hand, there is a compact contact between two adjacent protrusion structures 113, so that a larger number of protrusion structures 113 can be installed in the fluid channel 111, and when the heat exchange wall 112 is subjected to a certain impact force or torque, the multiple protrusion structures 113 can simultaneously withstand and share the impact force or torque, thereby achieving the effect of improving the structural strength of the heat exchange component 1.

[0030] On the other hand, when a spring force is applied in the arrangement direction of the multiple protrusion structures 113, two adjacent protrusion structures 113 come into contact with each other, forming a spring force and a reaction force. At this time, to a certain extent, the formation of multiple protrusion structures 113 can also jointly achieve the effect of bearing external spring force or torque. Therefore, the multiple protrusion structures 113 can very effectively improve the structural strength of the heat exchange component 1 and avoid the risk of deformation or damage to the heat exchange body 11.

[0031] The direction of a cross section perpendicular to the protrusion structure 113 is defined as the extension direction of the protrusion structure 113. In this embodiment, the extension direction of the protrusion structure 113 may be perpendicular to the extension direction of the fluid channel 111, and in this case, the multiple protrusion structures 113 are arranged along the extension direction of the fluid channel 111 from one end of the fluid channel 111 to the other end of the fluid channel 111.

[0032] 2, 4, and 6, each protrusion structure 113 extends from one end of the fluid channel 111 along the extension direction of the fluid channel 111. That is, the extension direction of each protrusion structure 113 is parallel to the extension direction of the fluid channel 111, and the plurality of protrusion structures 113 are arranged along a direction perpendicular to the extension direction of the fluid channel 111 from one side wall of the heat exchange wall 112 to the other side wall of the heat exchange wall 112.

[0033] At this time, two adjacent protrusion structures 113 abut each other to form a heat dissipation channel 114, the extension direction of which is the same as that of the fluid channel 111, and the cross-sectional area of ​​the heat dissipation channel 114 is much smaller than the cross-sectional area of ​​the fluid channel 111, that is, the pitch between two adjacent protrusion structures 113 is much smaller than the pitch between the opposite sides of the fluid channel 111, so that the flow rate of the heat exchange medium in the heat dissipation channel 114 is faster than the flow rate in the fluid channel 111, thereby further effectively improving the heat exchange efficiency of the heat exchange component 1.

[0034] Furthermore, compared to a method in which the protrusion structures 113 are installed perpendicular to the extension direction of the fluid channel 111, this avoids the generation of a certain resistance when the heat exchange medium flows through the protrusion structures 113, thereby ensuring smooth flow of the heat exchange medium. Furthermore, this makes it easier to produce and manufacture the heat exchange element 11.

[0035] Furthermore, as specifically shown in Figures 2, 4 and 6, two heat exchange walls 112 are installed in the heat exchange body 11, and the two heat exchange walls 112 are located on opposite sides of the fluid channel 111, respectively. In this case, if two battery cells are installed on opposite sides of the heat exchange body 11, both battery cells can exchange heat with the heat exchange medium inside the fluid channel 111 through the heat exchange walls 112. In other words, the heat released by the two battery cells during the charging and discharging process can both be rapidly absorbed by the heat exchange body 11 simultaneously.

[0036] On the other hand, the heat released from the two battery cells is transferred from both sides of the heat exchange body 11 to the heat exchange wall 112, then conducted from the heat exchange wall 112 to the protrusion structure 113, and finally diffused and collected in the heat exchange medium in the fluid channel 111, further improving the heat exchange efficiency of the heat exchange body 11 and the utilization rate of the heat exchange medium.

[0037] On the other hand, two battery cells are installed on opposite sides of the heat exchange body 11 to generate an extrusion force on the heat exchange body 11. At this time, under the action of the protrusion structures 113 on the two heat exchange walls 112, the heat exchange body 11 remains undeformed when subjected to the extrusion force. This effectively ensures the structural stability of the heat exchange body 11 when improving the heat exchange efficiency, and ultimately ensures the unexpected effect of maintaining stable heat exchange for the two battery cells at the same time.

[0038] It is preferable that the cross section of each of the above-mentioned protrusion structures 113 is triangular, and the characteristics of a triangle are utilized to make each of the protrusion structures 113 itself relatively stable, thereby ensuring an optimally firm state of the heat exchange element 11. However, it is not limited to a triangle, and shapes similar to a triangle with rounded corners and trapezoids may all be used as alternative structures for the protrusion structure 113 of the present solution.

[0039] The provision of the plurality of protrusion structures 113 on the fluid channel 111 significantly improves the heat exchange efficiency of the heat exchange body 11, ensuring that the heat released from the battery cells is effectively absorbed and carried away by the heat exchange medium, thereby improving the heat dissipation efficiency of the battery cells. Meanwhile, the amount of heat released by the battery cells during normal charging and discharging is not particularly large, and stable heat exchange is always maintained with the heat exchange body 11. Therefore, the amount of heat carried by the heat exchange medium from the battery cells as it flows from one end of the fluid channel 111 to the other is relatively small.

[0040] Based on the above-mentioned deficiencies, the present application further provides a further improvement means, specifically, as shown in FIG. 7, if the heat exchange wall 112 is defined as being perpendicular to the horizontal plane, the direction of the heat exchange wall 112 perpendicular to the horizontal plane is the height extension direction of the heat exchange wall 112, and the direction of the heat exchange wall 112 parallel to the horizontal plane is the extension direction of the fluid channel 111. The interior of the heat exchange element 11 is configured as a plurality of independent fluid channels 111, where "independent" means that the heat exchange medium in each fluid channel 111 does not interfere with the heat exchange medium in other fluid channels 111 and maintains a stable flow within the corresponding fluid channel 111. The plurality of fluid channels 111 are arranged along the height extension direction of the heat exchange wall 112, and the ends of two adjacent fluid channels 111 communicate with each other to form a serpentine channel.

[0041] At this time, the battery cells in contact with the heat exchange body 11 are placed vertically in a direction perpendicular to the horizontal plane, and when the heat exchange medium flows into the serpentine channel, it flows from top to bottom or from bottom to bottom in a detour along the height extension direction of the heat exchange wall 112, which is equivalent to the heat exchange medium flowing from bottom to top or from top to bottom in a detour along the height direction of the battery cells. This increases the flow stroke of the heat exchange medium within the heat exchange body 11 and significantly increases the heat exchange time between the heat exchange medium and the battery cells, thereby effectively improving the utilization rate of the heat exchange medium.

[0042] Unexpectedly, the heat exchange medium can flow in a circular manner along the height direction of the battery cell and exchange heat, and can also balance the temperature difference at different heights of the battery cell.

[0043] Furthermore, as specifically shown in Figures 1 and 2, the heat exchange component 1 for the battery further includes a main current collector 12, which is provided with a main current collecting chamber and a water inlet end 121 and a water outlet end 122 communicating with the main current collecting chamber, the main current collector 12 is connected to the end of the heat exchange body 11, and the fluid channel 111 communicates with the main current collecting chamber.

[0044] The water supply end 121 communicates with an external input pipe, and the drain end 122 communicates with an external output pipe. The heat exchange medium is transported to the water supply end 121 through the external input pipe, and then flows into the main current collecting chamber via the water supply end 121, thereby realizing the purpose of inputting the heat exchange medium into the heat exchange component 1. After the heat exchange medium flows and fills each fluid channel 111, the heat exchange medium that has retained or lost a large amount of heat is output from the drain end 122 and flows into the external output pipe.

[0045] In order to achieve the purpose of connecting the ends of two adjacent fluid channels 111 to form a serpentine channel, as shown in FIGS. 1 and 2, two first flow blocking plates 13 are installed between the end of the fluid channel 111 and the main current collector 12. The main current collecting chamber is divided into a water supply chamber 123, a water discharge chamber 124, and a first flow exchange chamber 125 that connects the ends of two adjacent fluid channels 111 through the two first flow blocking plates 13. The fluid channel 111 is connected to the first flow exchange chamber 125, and under the action of the first flow blocking plate 13, the heat exchange medium inside the water supply chamber 123 does not flow directly into the first flow exchange chamber 125, and the heat exchange medium inside the first flow exchange chamber 125 does not flow directly into the drain chamber 124, so that the three components, the water supply chamber 123, the drain chamber 124 and the first flow exchange chamber 125, remain independent of each other.

[0046] One end of the serpentine channel is connected to the water supply end 121 via the water supply chamber 123, and the other end of the serpentine channel is connected to the water supply end 122 via the water discharge chamber 124, so that the water supply chamber 123 is connected to the water supply end 121, and the water discharge chamber 124 is connected to the water discharge end 122. The heat exchange medium of the water supply chamber 123 enters through the water supply end 121 and flows into the serpentine channel under the blocking and guidance of the first flow blocking plate 13, that is, into the fluid channel 111 connected to the water supply chamber 123.

[0047] Under the action of the first flow exchange chamber 125, two adjacent fluid channels 111 are connected to each other, and the heat exchange medium flowing out of the fluid channel 111 does not flow back to the water supply chamber 123, nor does it flow directly into the drain chamber 124. This ensures that the heat exchange medium flowing out of the fluid channel 111 flows into the first flow exchange chamber 125 and then guided into the adjacent fluid channel 111, thereby achieving the purpose of multiple fluid channels 111 being connected to one end of the main current collector 12 and connected head to tail.

[0048] The heat exchange medium inside the serpentine channel finally flows into the drain chamber 124, that is, the fluid channel 111 connected to the drain chamber 124 outputs the heat exchange medium to the drain chamber 124, and under the blocking and guidance of the first flow blocking plate 13, the heat exchange medium flows through the drain chamber 124 and then is output from the drain end 122.

[0049] Furthermore, as specifically shown in FIGS. 3 and 4, the heat exchange component 1 for a battery further includes a sub-current collector 14, and the main current collector 12 and the sub-current collector 14 are respectively connected to opposite ends of the heat exchange body 11; A sub-collector chamber is installed in the sub-collector 14, and a second flow blocking plate 15 is installed between the end of the fluid channel 111 and the sub-collector 14. Under the action of the second flow blocking plate 15, the heat exchange medium in the second flow exchange chamber 141 does not flow directly into the adjacent second flow exchange chamber 141, so that the multiple second flow exchange chambers 141 remain independent, and the sub-collector chamber is divided into two second flow exchange chambers 141 that connect the ends of two adjacent fluid channels 111 through the second flow blocking plate 15, i.e., the ends of two adjacent fluid channels 111 are connected through the second flow exchange chamber 141.

[0050] That is, one end of the fluid channel 111 realizes a head-to-head connection between two adjacent fluid channels 111 under the action of the first flow exchange chamber 125 of the main current collector 12, and the other end of the fluid channel 111 realizes a head-to-head connection between two adjacent fluid channels 111 under the action of the second flow exchange chamber 141 of the sub-current collector 14. Under the action of the second flow exchange chamber 141, the heat exchange medium flowing out of the fluid channel 111 can be stably introduced into the second flow exchange chamber 141 and then guided into the adjacent fluid channel 111, thereby realizing the purpose of connecting the multiple fluid channels 111 to one end of the sub-current collector 14 and achieving head-to-head communication.

[0051] It should be noted that the number of the first flow blocking plates 13 is not limited to two, but may be three, four, five, etc., and the number of the second flow blocking plates 15 installed on the sub-collector 14 may be two, three, four, etc., and the number of the fluid channels 111 installed on the heat exchanger 11 may be six, eight, ten, etc., which can be specifically adjusted according to the design and design needs of the battery.

[0052] Furthermore, it is preferable that all of the multiple first flow interruption plates 13 are fixedly connected to the end of the heat exchange body 11, and only the main current collecting chamber needs to be installed in the main current collector 12. During production and assembly, the multiple first flow interruption plates 13 in the heat exchange body 11 are inserted into the main current collecting chamber of the main current collector 12, and the main current collector 12 is fixedly connected to the heat exchange body 11. This not only simplifies production and manufacturing, but also eliminates the need for positioning and alignment during the assembly process. Furthermore, it is also possible to fix and connect all of the multiple first flow interruption plates 13 inside the main current collecting chamber of the main current collector 12, and then fix and connect the main current collector 12 to the heat exchange body 11.

[0053] Similarly, at least one second flow interruption plate 15 is preferably fixedly connected to the end of the heat exchange element 11, and only a sub-current collecting chamber needs to be installed in the sub-current collector 14. During the production and assembly process, the second flow interruption plate 15 in the heat exchange element 11 is inserted into the sub-current collecting chamber of the sub-current collector 14, and the sub-current collector 14 is fixedly connected to the heat exchange element 11. Furthermore, at least one second flow interruption plate 15 may be fixedly connected to the sub-current collecting chamber of the sub-current collector 14, and then the sub-current collector 14 may be fixedly connected to the heat exchange element 11. Second Example

[0054] Based on the heat exchange component 1 for a battery of the first embodiment, as specifically shown in FIG. 8 , the present application further discloses a battery module applying the heat exchange component 1 for a battery, a heat exchange component 1 for said battery; and a battery pack 2 located on one side of the heat exchange body 11 of the heat exchange component 1, wherein a plurality of battery cells of the battery pack 2 are arranged along the extension direction of the fluid channel 111 from one end of the heat exchange body 11, and each battery cell abuts against the heat exchange wall 112 of the heat exchange body 11, thereby ensuring that each battery cell can be attached to the heat exchange wall 112 and can exchange heat with the heat exchange medium in the fluid channel 111.

[0055] The multiple protrusion structures 113 of the heat exchanger 11 allow each battery cell to efficiently exchange heat with the heat exchange wall 112. In particular, when any battery cell is overcharged, overdischarged, or in a thermal runaway state, the heat exchange component 1 ensures rapid heat dissipation, effectively avoiding the risk of thermal diffusion in the battery pack 2 in a thermal runaway state and thereby ensuring the stability of the battery module during use. Furthermore, the heat exchange medium is used to bypass the flow in the vertical direction and exchange heat with the battery cells, thereby effectively controlling the temperature difference between the battery cells and achieving the purpose of balanced temperature consistency control of the battery pack.

[0056] 8, heat exchange components 1 are preferably installed on both opposing sides of the battery pack 2, and the main current collectors 12 of the two heat exchange components 1 are electrically connected. Specifically, the water supply ends 121 of the two main current collectors 12 are connected via a conduit, and the water discharge ends 122 of the two main current collectors 12 are connected via a conduit, and when the external input pipe supplies a heat exchange medium to one of the heat exchange components 1, it simultaneously supplies the heat exchange medium to the other heat exchange component 1, so that both heat exchange components 1 are filled with the heat exchange medium.

[0057] The heat exchange walls 112 of the two heat exchange bodies 11 are both in contact with the sides of the battery cells, allowing the battery cells to dissipate heat evenly to the opposite side, achieving the goal of balanced heat dissipation, improving the heat dissipation efficiency of the battery pack 2, and ensuring that the battery pack 2 maintains an optimal operating condition.

[0058] In this embodiment, as shown in FIG. 8 , the battery cells are preferably cylindrical battery cores, and the heat exchange walls 112 are accordingly arranged in a corrugated shape, i.e., the heat exchange walls 112 of each heat exchange body 11 have a plurality of arc-shaped curved valleys 10, and each battery cell is abutted and attached to the corresponding valley, and the shape and dimensions of each valley are preferably matched to the shape and dimensions of the battery cell, thereby increasing the heat exchange area between the battery cells and the heat exchange walls 112, maximizing the heat exchange efficiency of the battery cells of the battery pack 2, and effectively avoiding the risk of thermal runaway in the battery pack 2.

[0059] Furthermore, as specifically shown in FIG. 9, the battery module includes a plurality of battery packs 2 and a plurality of heat exchange components 1, each heat exchange component 1 is installed between two adjacent battery packs 2, the plurality of battery packs 2 are installed in an alternating arrangement, and the main current collectors 12 of the two adjacent heat exchange components 1 are electrically connected.

[0060] Specifically, a heat exchange component 1 is installed on the outside of each of the two outermost opposing battery packs 2. The water supply ends 121 of two adjacent main current collectors 12 are connected via a conduit, and the water discharge ends 122 of two adjacent main current collectors 12 are connected via a conduit. This allows the multiple heat exchange components 1 to be connected in parallel. When a heat exchange medium is simultaneously input to each heat exchange component 1, any battery pack 2 can simultaneously dissipate heat in a balanced manner to both sides. This means that each battery pack 2 can always be used at an optimal ambient temperature. Furthermore, the heat exchange component 1 is assembled and fixed between the two battery packs 2, effectively reducing the space occupied by the battery module. This effectively saves space for the liquid cooling system inside the battery pack. Furthermore, the heat exchange medium supplied from the outside is diverted via the multiple heat exchange components 1, achieving the unexpected effect of reducing the flow resistance of the battery's liquid cooling system. Third Example

[0061] The present application further discloses a battery pack using the heat exchange component 1 for a battery of the first embodiment and the battery module of the second embodiment, the battery pack including a battery case and the battery module, wherein the battery module is assembled and fixed inside the battery case. Therefore, by skillfully utilizing the heat exchange component 1 and its battery module, it can contribute to the rapid heat dissipation of each battery cell, ensuring that each battery cell is maintained at an optimal temperature, thereby solving the problems of high temperature and temperature inconsistency caused by the high-rate fast charging of new energy vehicles.In addition, with the increasing requirements for energy density of power batteries, the battery pack can always ensure optimal performance and stability, and can also improve the cycle service life of the battery pack. [Explanation of symbols]

[0062] 1 Heat Exchange Components 11 Heat exchanger 111 Fluid Channel 112 Heat exchange wall 113 Protrusion structure 114 Heat dissipation channel 12 Main current collector 121 Water supply end 122 Drain end 123 Water Supply Chamber 124 Drainage chamber 125 First flow exchange chamber 13 First flow blocking plate 14 Sub-current collector 141 Second flow exchange chamber 15 Second flow blocking plate 2 battery packs

Claims

1. A heat exchange component (1) for a battery, comprising: a heat exchange body (11) having a fluid channel (111) therein and further having at least one heat exchange wall (112) installed therein, the heat exchange wall (112) being installed so as to contact a side surface of the battery cell, and heat exchange between the heat exchange wall (112) and the fluid channel (111); a plurality of protrusion structures (113) each located on the heat exchange wall (112) on a side closer to the fluid channel (111), wherein two adjacent protrusion structures (113) abut against each other to increase the heat exchange area of ​​the heat exchange body (11) and to strengthen the structural strength of the heat exchange body (11); Heat exchange component for battery (1).

2. Each of the protrusion structures (113) extends from one end of the fluid channel (111) along the extension direction of the fluid channel (111). A heat exchange component (1) for a battery according to claim 1.

3. The heat exchange body (11) is provided with two heat exchange walls (112), each of which is located on either side of the fluid channel (111). A heat exchange component (1) for a battery according to claim 1.

4. The cross section of the protruding structure (113) is triangular; A heat exchange component (1) for a battery according to claim 1, 2 or 3.

5. If the heat exchange wall (112) is defined as being perpendicular to a horizontal plane, the direction along which the heat exchange wall (112) is perpendicular to the horizontal plane is the height extension direction of the heat exchange wall (112), The interior of the heat exchange body (11) is provided as a plurality of independent fluid channels (111), the plurality of fluid channels (111) are arranged along the height extension direction of the heat exchange wall (112), and the ends of two adjacent fluid channels (111) communicate with each other to form a serpentine channel. A heat exchange component (1) for a battery according to claim 1, 2 or 3.

6. The system further includes a main current collector (12), the main current collector (12) having a main current collecting chamber, a water supply end (121) and a water discharge end (122), the water supply end (121) and the water discharge end (122) both communicating with the main current collecting chamber, the main current collector (12) being connected to an end of the heat exchange body (11), and the fluid channel (111) communicating with the main current collecting chamber. A heat exchange component (1) for a battery according to claim 5.

7. A plurality of first flow blocking plates (13) are installed between the ends of the fluid channels (111) and the main current collector (12), and the main current collecting chamber is divided into a water supply chamber (123), a drain chamber (124), and at least one first flow exchange chamber (125) via the plurality of first flow blocking plates (13). Two adjacent fluid channels (111) communicate with each other via the first flow exchange chambers (125). One end of the serpentine channel communicates with the water supply end (121) via the water supply chamber (123), and the other end of the serpentine channel communicates with the drain end (122) via the drain chamber (124). A heat exchange component (1) for a battery according to claim 6.

8. The heat exchange body (11) further includes a sub-current collector (14), and the main current collector (12) and the sub-current collector (14) are connected to opposite ends of the heat exchange body (11), respectively. A sub-collector chamber is provided in the sub-collector (14), and at least one second flow blocking plate (15) is provided between the end of the fluid channel (111) and the sub-collector (14). The sub-collector chamber is divided into a plurality of second flow exchange chambers (141) via the at least one second flow blocking plate (15), and two adjacent fluid channels (111) communicate with each other via each of the second flow exchange chambers (141). A heat exchange component (1) for a battery according to claim 6.

9. A battery module, A heat exchange component (1) for a battery according to any one of claims 1 to 8, a battery pack (2) located on one side of the heat exchange body (11) of the heat exchange component (1), wherein a plurality of battery cells of the battery pack (2) are arranged along the extension direction of the fluid channel (111) from one end of the heat exchange body (11), and each of the battery cells abuts against a heat exchange wall (112) of the heat exchange body (11); Battery module.

10. The heat exchange components (1) are installed on both opposing sides of the battery pack (2), and the main current collectors (12) of the two heat exchange components (1) are electrically connected. The battery module according to claim 9 .

11. The battery cell is a cylindrical battery core, and the heat exchange wall (112) is installed in a corrugated shape. The battery module according to claim 9 or 10.

12. The battery pack (2) includes a plurality of the battery packs (2) and a plurality of heat exchange components (1), each of the heat exchange components (1) is installed between two adjacent battery packs (2), the plurality of battery packs (2) are installed in an alternating arrangement, and the main current collectors (12) of two adjacent heat exchange components (1) are electrically connected. The battery module according to claim 11 .

13. A battery pack, A battery module according to any one of claims 9 to 12, wherein the battery module is assembled and fixed inside the battery case. Battery pack.

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