An integrated structure of heating and liquid cooling

Abstract

The present invention discloses an integrated structure of heating and liquid cooling, including a box for placing modules, a partition is provided in the box, modules are placed on both sides of the partition, a liquid guide cavity is opened on the partition, a heat conduction liquid is provided in the liquid guide cavity, and the temperature of the heat conduction liquid can be higher than or lower than the temperature of the module; a heating plate is also provided on the partition, specifically, the heating plate is a plate-like structure that can realize the heating function in the prior art, and can be an electric heating plate in the prior art, preferably a PTC ceramic heating plate. In the present invention, the proposed integrated structure of heating and liquid cooling, by providing a partition in the box and integrating the heating plate and the liquid cooling cavity on the partition, has a simple structure and can achieve the technical effect of cooling and heating the battery module.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy related structures, and in particular to an integrated structure of heating and liquid cooling. Background Art

[0002] One of the heating methods for battery packs using cylindrical modules is heating, and the cooling method is self-heating cooling.

[0003] The main problems with heating: When the battery pack is heated, the heating power is limited by the size of the heating ceramic sheet, and the heating capacity is limited. The cooling method for heating is natural cooling, which has a slow cooling rate, poor temperature difference control effect, and unsatisfactory cooling effect. A water cooling belt can be added to the battery module to cool the module, but if a water cooling belt is added to a cylindrical module, the cost is relatively high; the water cooling belt is in contact with each module, and the requirements for the flatness of the water cooling belt and the module are increased, and the module space utilization rate is reduced; the positioning and installation process of the water cooling belt is complicated. Summary of the invention

[0004] In order to solve the technical problems existing in the background technology, the present invention proposes an integrated structure of heating and liquid cooling.

[0005] The present invention proposes an integrated structure of heating and liquid cooling, comprising a box for placing a module, a partition is provided in the box, modules are placed on both sides of the partition, a liquid guide cavity is opened on the partition, a heat conduction liquid is provided in the liquid guide cavity, and the temperature of the heat conduction liquid can be higher than the temperature of the module or lower than the temperature of the module;

[0006] The partition is also provided with a heating plate. Specifically, the heating plate is a plate-shaped structure that can realize the heating function in the prior art. It can be an electric heating plate in the prior art, preferably a PTC ceramic heating plate.

[0007] Preferably, at least two groups of liquid conducting cavities are provided on the partition, and at least one group of the liquid conducting cavities is located above the heating plate, and at least one group of the liquid conducting cavities is located below the heating plate.

[0008] Preferably, the partition is also provided with an installation cavity for installing the heating plate.

[0009] Preferably, the outer cover of the module is provided with a heat-conducting frame, and the heat-conducting frame is in contact with the partition surface.

[0010] Preferably, the partition is also provided with a liquid inlet pipe and a liquid outlet pipe communicating with the liquid guiding cavity.

[0011] Preferably, a transverse plate is provided in the liquid guiding cavity, and the transverse plate divides the liquid guiding cavity into a liquid inlet channel and a liquid outlet channel. A connecting hole is provided at one end of the transverse plate away from the liquid inlet pipe and the liquid outlet pipe, and the connecting hole connects the liquid outlet channel with the liquid inlet channel.

[0012] Preferably, an adjusting hole for connecting the liquid outlet channel and the liquid inlet channel is formed on the transverse plate, and an elastic adjusting member for closing the adjusting hole is provided in the liquid outlet channel.

[0013] Preferably, when the module temperature is low or high, the pressure of the liquid inlet channel has a time period that is greater than the pressure of the liquid outlet channel. When the pressure of the liquid inlet channel is greater than the pressure of the liquid outlet channel, the elastic adjustment member moves to open the adjustment hole.

[0014] Preferably, at least two groups of the partitions are provided, and at least two groups of the partitions are arranged parallel to each other, modules are provided on both sides of each group of the partitions, and there is a separation channel between the modules of two adjacent partitions.

[0015] Preferably, it also includes a first main pipe and a second main pipe, the liquid inlet pipe on each of the partition assemblies is connected to the first main pipe, the liquid outlet pipe on each of the partition assemblies is connected to the second main pipe, and a valve is provided on the liquid inlet pipe on each of the partition assemblies.

[0016] In the present invention, the integrated structure of heating and liquid cooling is proposed. By setting a partition in the box and integrating the heating plate and the liquid cooling chamber on the partition, the structure is simple and can achieve the technical effect of cooling or heating the battery module. Furthermore, by setting at least two groups of partitions, it is convenient to heat or cool different modules separately to avoid a large temperature difference between different battery modules.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the present invention;

[0019] Figure 2 It is a schematic diagram of the structure of the partition plate, the liquid inlet pipe and the liquid outlet pipe of the present invention;

[0020] Figure 3 It is a schematic diagram of the connection structure between the first main pipe and the second main pipe and the liquid inlet pipe and the liquid outlet pipe of the present invention;

[0021] Figure 4 is a cross-sectional view of a partition of the present invention;

[0022] Figure 5 This is a schematic diagram of the connection structure between the elastic adjusting member and the adjusting hole of the present invention;

[0023] Figure 6 It is a cross-sectional view of the partition of the present invention in another direction;

[0024] In the figure: 1. box body; 10. lower box body; 11. upper cover plate; 2. partition plate; 20. liquid guiding cavity; 200. liquid inlet channel; 201. liquid outlet channel; 21. installation cavity; 3. module; 4. heating plate; 5. heat conducting frame; 6. liquid inlet pipe; 7. liquid outlet pipe; 8. horizontal plate; 80. adjustment hole; 81. connecting hole; 9. elastic adjustment member; 12. partition protrusion; 13. first main pipe; 14. second main pipe; 15. valve. DETAILED DESCRIPTION

[0025] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar symbols throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0026] like Figure 1 The integrated structure of heating and liquid cooling shown in the figure comprises a box 1 for placing a module 3, the box 1 comprises a lower box 10 and an upper cover 11. It should be noted that the structure of the lower box 10 is the same as that of the prior art and has a receiving groove. Figure 1 The side panels of the lower box body 10 shown are removed, and a partition 2 is provided in the box body 1, and modules 3 are placed on both sides of the partition 2. The partition 2 and the module 3 are both installed in the box body 1. Those skilled in the art should understand that the module 3 is the battery module 3 in the prior art. In this embodiment, the battery module 3 includes a plurality of laterally arranged cylindrical cells, each of which is in contact with the partition 2. Preferably, the module 3 is in surface contact with the partition 2. Specifically, the partition 2 has a first side surface and a second side surface, and the first side surface and the second side surface are opposite to each other. Modules 3 are provided on both sides of the partition 2, that is, one group of modules 3 is in contact with the first side surface, and the second module 3b is in contact with the second side surface. A liquid guide cavity 20 is provided on the partition 2, and a heat conduction liquid is provided in the liquid guide cavity 20. The temperature of the heat conduction liquid can be higher than the temperature of the module 3 or lower than the temperature of the module 3.

[0027] A heating plate 4 is also provided on the partition 2 . In this embodiment, the heating plate 4 may be a PTC ceramic heating plate 4 .

[0028] It should be noted that, similar to the prior art, each module 3 is provided with a temperature sensor, and also includes a controller to control the operation of the PTC ceramic heating plate 4. When the temperature sensor detects that the temperature of the battery module 3 is low, the PTC ceramic heating plate 4, i.e., the heating plate 4, heats the module 3, and at the same time, a liquid with a higher temperature is injected into the liquid guide cavity 20 to heat the module 3; when the temperature of the module 3 is high, a liquid with a lower temperature can be injected into the liquid guide cavity 20 to cool the module 3.

[0029] like Figure 1-2As shown, preferably, there are two groups of liquid conducting cavities 20 on the partition 2, and the heating plate 4 is located between the two groups of liquid conducting cavities 20, one group of liquid conducting cavities 20 is located above the heating plate 4, and the other group of liquid conducting cavities 20 is located below the heating plate 4, thereby increasing the heating or cooling efficiency of the module 3.

[0030] As shown in the figure, based on the above embodiment, in some embodiments, preferably, a mounting cavity 21 for mounting the heating plate 4 is further opened on the partition 2, and the mounting cavity 21 is equidistant from the first side surface and the second side surface, so that the heating plate 4 has the same heating effect on the modules 3 on both sides of the partition 2.

[0031] On the basis of the above embodiments, in some embodiments, preferably, a heat-conducting frame 5 is provided on the outer side cover of the module 3, and the heat-conducting frame 5 is in surface contact with the partition 2. Specifically, the provision of the heat-conducting frame 5 further facilitates the fixation of the module 3, and air holes are provided on the outer side of the heat-conducting frame 5, one air hole is opposite to a cylindrical battery cell, preferably, the positive electrode column and the negative electrode column of the cylindrical battery cell both extend out of the air holes, and the positive electrode column and the negative electrode column of the cylindrical battery cell are in contact with the partition 2; and the cold air or hot air around the partition 2 enters the gap between the battery cells through the air holes.

[0032] On the basis of the above embodiments, in some embodiments, preferably, the partition 2 is further provided with a liquid inlet pipe 6 and a liquid outlet pipe 7 connected to the liquid guiding cavity 20, so as to facilitate the circulation of the external liquid with lower temperature or the liquid with higher temperature in the liquid guiding cavity 20, thereby increasing the heating or cooling efficiency.

[0033] like Figure 4 , 6 As shown, on the basis of the above embodiments, in some embodiments, preferably, a transverse plate 8 is provided in the liquid guiding cavity 20, and the transverse plate 8 is transversely arranged in the liquid guiding cavity 20, and the transverse plate 8 divides the liquid guiding cavity 20 into a liquid inlet channel 200 and a liquid outlet channel 201, and the liquid inlet channel 200 is located below the liquid outlet channel 201, and a connecting hole 81 is provided at one end of the transverse plate 8 away from the liquid inlet pipe 6 and the liquid outlet pipe 7, and the connecting hole 81 connects the liquid outlet channel 201 and the liquid inlet channel 200, and the liquid inlet pipe 6 and the liquid outlet pipe 7 are located on the same side of the partition 2, thereby further increasing the heating or cooling effect of the module 3.

[0034] like Figure 4 , 5 As shown, on the basis of the above embodiments, in some embodiments, preferably, an adjusting hole 80 is opened on the horizontal plate 8 to connect the liquid outlet channel 201 and the liquid inlet channel 200, and an elastic adjusting member 9 is provided in the liquid outlet channel 201 for closing the adjusting hole 80. It should be noted that the adjusting hole 80 is close to the liquid inlet pipe 6 and the liquid outlet pipe 7 relative to the connecting hole 81, and a plurality of adjusting holes 80 may be provided, and an elastic adjusting member 9 is installed on each adjusting hole 80.

[0035] On the basis of the above embodiments, in some embodiments, preferably, when the temperature of the module 3 is relatively low or relatively high, the pressure of the liquid inlet channel 200 has a time period that is greater than the pressure of the liquid outlet channel 201. When the pressure of the liquid inlet channel 200 is greater than the pressure of the liquid outlet channel 201, the elastic adjusting member 9 moves to open the adjusting hole 80; that is, when the flow of the liquid inlet pipe 6 is greater than the flow of the liquid outlet pipe 7, the elastic adjusting member 9 opens the adjusting hole 80; when the flow of the liquid inlet pipe 6 is equal to or less than the flow of the liquid outlet pipe 7, the elastic adjusting member 9 closes the adjusting hole 80. Specifically, when the temperature of the module 3 is relatively high or relatively low, the flow is adjusted to make the flow of the liquid inlet pipe 6 greater than the flow of the liquid outlet pipe 7. Of course, in order to increase the service life of the partition 2, the flow of the liquid inlet pipe 6 is adjusted to be higher than the flow of the liquid outlet pipe 7 so as to be adjusted intermittently in a periodic manner, that is, the flow of the liquid inlet pipe 6 is adjusted to be greater than the flow of the liquid outlet pipe 7 and the flow of the liquid inlet pipe 6 is adjusted to be less than the flow of the liquid outlet pipe 7, which are adjusted alternately and periodically.

[0036] like Figure 2 , Figure 3 As shown, preferably, in order to adjust the flow of the liquid inlet pipe 6 and the liquid outlet pipe 7, valves 15 are provided on the liquid inlet pipe 6 and the liquid outlet pipe 7.

[0037] In order to realize that the elastic adjusting member 9 can adjust the opening or closing of the adjusting hole 80 according to the pressure of the liquid inlet channel 200 and the liquid outlet channel 201, as shown in FIG. Figure 5 As shown, preferably, the elastic adjusting member 9 is made of rubber material, the adjusting hole 80 is a stepped hole, the adjusting hole 80 includes an upper connecting portion and a lower connecting portion, the aperture of the upper connecting portion is larger than the aperture of the lower connecting portion, and a step is formed between the upper connecting portion and the lower connecting portion, the elastic adjusting member 9 is installed on the step, the elastic adjusting member 9 has a portion fixed to the step and also has a portion that is only in contact with the step but not completely adhered, when the pressure of the liquid inlet channel 200 is relatively high, it resists the elastic adjusting member 9, and the elastic adjusting member 9 undergoes elastic deformation to open the adjusting hole 80;

[0038] In some embodiments, preferably, Figure 5 As shown, the side of the elastic adjusting member 9 away from the liquid inlet pipe 6 and the liquid outlet pipe 7 is glued and fixed to the step. When the pressure of the liquid inlet channel 200 and the liquid outlet channel 201 is equal or the pressure of the liquid inlet channel 200 is less than the pressure of the liquid outlet channel 201, the side of the elastic adjusting member 9 close to the liquid inlet pipe 6 and the liquid outlet pipe 7 contacts the step. When the pressure of the liquid inlet channel 200 is greater than the pressure of the liquid outlet channel 201, the side of the elastic adjusting member 9 away from the liquid inlet pipe 6 and the liquid outlet pipe 7 is separated from the step and the elastic adjusting member 9 and the step form a liquid outlet to open the adjustment hole 80. Preferably, the upper surface of the elastic adjusting member 9 is an inclined surface, which gradually inclines upward from the side away from the liquid inlet pipe 6 and the liquid outlet pipe 7 to the side close to the liquid inlet pipe 6 and the liquid outlet pipe 7. The upper surface of the elastic adjusting member 9 has a portion located below the upper surface of the horizontal plate 8 and also has a portion located above the upper surface of the horizontal plate 8.

[0039] On the basis of the above embodiments, in some embodiments, preferably, the partition 2 is provided with at least two groups, such as Figure 2 As shown, the partitions 2 in this embodiment are provided with two groups, and the two groups of partitions 2 are arranged parallel to each other, and modules 3 are provided on both sides of each group of partitions 2, and there is a separation channel between the modules 3 of two adjacent partitions 2; specifically, a separation protrusion 12 is provided in the box body 1, and the separation protrusion 12 is arranged along the length direction of the partition 2, and the separation protrusion 12 divides the box body 1 into a first accommodating groove and a second accommodating groove, wherein one partition 2 and the module 3 in contact with the partition 2 are arranged in the first accommodating groove, and the other partition 2 and the module 3 in contact with the partition 2 are arranged in the second accommodating groove, and a separation channel is formed above the separation protrusion 12; the efficiency of cooling or heating the module 3 is further increased, and the modules 3 in contact with different partitions 2 can adjust their heating or cooling efficiency separately, thereby facilitating reducing the temperature difference between the two groups of modules 3.

[0040] like Figure 3 As shown, preferably, it also includes a first main pipe 13 and a second main pipe 14, the liquid inlet pipe 6 on each partition plate 2 assembly is connected to the first main pipe 13, the liquid outlet pipe 7 on each partition plate 2 assembly is connected to the second main pipe 14, and a valve 15 is provided on the liquid inlet pipe 6 on each partition plate 2 assembly, and the valve 15 is a solenoid valve, and the solenoid valve is connected to the controller;

[0041] like Figure 2 , 3 As shown, since there are two groups of partitions 2, modules 3 are provided on both sides of each group of partitions 2, each group of modules 3 is provided with a temperature detection component, and a valve 15 is provided on the liquid inlet pipe 6 connected to each group of partitions 2. The opening and closing of the valve 15 can be controlled to ensure that the temperatures of the modules 3 corresponding to the two groups of partitions 2 are similar, thereby ensuring the working efficiency of the battery.

[0042] During operation, the module 3 in contact with one group of partitions 2 can also be defined as the first module 3a, and the module 3 in contact with the other partition 2 can be defined as the second module 3b. When the temperature difference between the first module 3a and the second module 3b detected is greater than a threshold value, in this embodiment, the threshold value is set to 15°C, and the temperatures of the two groups of second modules 3b are both relatively high, the controller controls the opening angle of the solenoid valve of the liquid inlet pipe 6 of the partition 2 opposite to the module 3 with a higher temperature to become larger, and the opening angle of the other solenoid valve is smaller, thereby making the liquid inlet flow rate of the partition 2 opposite to the module 3 with a higher temperature greater than the liquid inlet flow rate of the partition 2 opposite to the other module 3, and the liquid flowing into the two partitions 2 is a liquid with a lower temperature, until the temperature difference between the two modules 3 is less than 8°C, and then determine whether to continue cooling the module 3 according to the temperature of the module 3;

[0043] If the temperatures of the modules 3 are relatively low, and when the detected temperature difference between the first module 3a and the second module 3b is greater than a threshold value, the controller controls the solenoid valves on the two liquid inlet pipes 6 to increase the flow rate of the liquid inlet pipe 6 on the partition 2 relative to the module 3 with a lower temperature, until the temperature difference between the two modules 3 is less than 8°C, and then determines whether to continue heating the module 3 based on the temperature condition of the module 3.

[0044] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0045] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0046] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0048] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A heating and liquid cooling integrated structure, comprising a box (1) for placing a module (3), characterized in that: A partition (2) is provided in the box body (1), modules (3) are placed on both sides of the partition (2), a liquid guide cavity (20) is opened on the partition (2), a heat conduction liquid is provided in the liquid guide cavity (20), and the temperature of the heat conduction liquid can be higher than the temperature of the module (3) or lower than the temperature of the module (3); The partition (2) is also provided with a heating plate (4); The partition plate (2) is also provided with a liquid inlet pipe (6) and a liquid outlet pipe (7) which are in communication with the liquid guiding cavity (20); A transverse plate (8) is provided in the liquid guiding cavity (20), and the transverse plate (8) divides the liquid guiding cavity (20) into a liquid inlet channel (200) and a liquid outlet channel (201); a connecting hole (81) is provided at one end of the transverse plate (8) away from the liquid inlet pipe (6) and the liquid outlet pipe (7); the connecting hole (81) connects the liquid outlet channel (201) and the liquid inlet channel (200); and the liquid outlet channel (201) is located above the liquid inlet channel (200); The transverse plate (8) is provided with an adjusting hole (80) for connecting the liquid outlet channel (201) and the liquid inlet channel (200), and an elastic adjusting member (9) for closing the adjusting hole (80) is provided in the liquid outlet channel (201); When the temperature of the module (3) is low or high, the pressure of the liquid inlet channel (200) has a time period that is greater than the pressure of the liquid outlet channel (201). When the pressure of the liquid inlet channel (200) is greater than the pressure of the liquid outlet channel (201), the elastic adjusting member (9) moves to open the adjusting hole (80). When the flow rate of the liquid inlet pipe (6) is greater than the flow rate of the liquid outlet pipe (7), the elastic adjusting member (9) opens the adjusting hole (80); when the flow rate of the liquid inlet pipe (6) is equal to or less than the flow rate of the liquid outlet pipe (7), the elastic adjusting member (9) closes the adjusting hole (80).

2. The integrated structure of heating and liquid cooling according to claim 1, characterized in that: At least two groups of liquid conducting cavities (20) are provided on the partition (2), and at least one group of the liquid conducting cavities (20) is located above the heating plate (4), and at least one group of the liquid conducting cavities (20) is located below the heating plate (4).

3. The integrated structure of heating and liquid cooling according to claim 1, characterized in that: The partition plate (2) is also provided with an installation cavity (21) for installing the heating plate (4).

4. The integrated structure of heating and liquid cooling according to claim 1, characterized in that: The outer side cover of the module (3) is provided with a heat-conducting frame (5), and the heat-conducting frame (5) is in surface contact with the partition (2).

5. The integrated structure of heating and liquid cooling according to claim 1, characterized in that: At least two groups of partitions (2) are provided, and at least two groups of partitions (2) are arranged parallel to each other. Modules (3) are provided on both sides of each group of partitions (2), and a separation channel is provided between the modules (3) of two adjacent partitions (2).

6. The integrated structure of heating and liquid cooling according to claim 5, characterized in that: It also includes a first main pipe (13) and a second main pipe (14), wherein the liquid inlet pipe (6) on each of the partition (2) components is connected to the first main pipe (13), the liquid outlet pipe (7) on each of the partition (2) components is connected to the second main pipe (14), and a valve (15) is provided on the liquid inlet pipe (6) on each of the partition (2) components.

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