Battery pack structure integrating heat dissipation and heating and battery device

Abstract

The present disclosure provides an integrated heat dissipation and heating battery pack structure and a battery device, the integrated heat dissipation and heating battery pack structure comprising a first battery module, a second battery module, a heating sponge and a heat dissipation fin; the heating sponge is fixedly arranged between the first battery module and the second battery module, the heating sponge is provided with a heat conduction through cavity, the heat conduction through cavity is arranged at the side edge of the heating sponge, the port at one end of the heat conduction through cavity is connected to the side of the first battery module, and the port at the other end of the heat conduction through cavity is connected to the side of the second battery module; the heat dissipation fin is arranged on the outer periphery of the first battery module and the outer periphery of the second battery module; by arranging the heating sponge between the first battery module and the second battery module, the problem of battery performance degradation and failure to work normally caused by low temperature is effectively solved; by arranging the heat dissipation fin on the outer periphery of the first battery module and the second battery module, the heat dissipation fin can reduce the temperature of the first battery module and the second battery module.

Description

Technical Field

[0001] This disclosure relates to the technical field of battery packs, and in particular to a battery pack structure and battery device that integrates heat dissipation and heating. Background Technology

[0002] Power battery packs typically operate in various environments. High temperatures cause them to generate significant heat, leading to temperature increases that negatively impact battery life and safety. Conversely, low temperatures reduce battery activity, necessitating heating to maintain performance. Currently, battery pack thermal management systems often separate heat dissipation and heating functions, employing independent cooling pipes and power temperature control (PTC) films. This approach suffers from system complexity, large footprint, increased weight, and high cost. Furthermore, the contact between heating elements and battery cells is often insufficient, resulting in high thermal resistance, low heat transfer efficiency, and poor temperature uniformity, making it difficult to achieve an ideal balance between efficient heat dissipation and rapid, uniform heating. Utility Model Content

[0003] The purpose of this disclosure is to overcome the shortcomings of the prior art and provide an integrated heat dissipation and heating battery pack structure and battery device that combines battery pack heating and heat dissipation functions.

[0004] The purpose of this disclosure is achieved through the following technical solution: A battery pack structure integrating heat dissipation and heating, characterized in that, The device includes a first battery module, a second battery module, a heating sponge, and a heat sink. The heating sponge is fixedly disposed between the first battery module and the second battery module. The heating sponge has a heat-conducting cavity on its side. One end of the heat-conducting cavity is connected to the side of the first battery module, and the other end is connected to the side of the second battery module. The heat sink is fitted onto the outer periphery of both the first battery module and the second battery module.

[0005] In one embodiment, the heat-conducting cavity extends through both sides of the heated sponge.

[0006] In one embodiment, the number of heat-conducting cavities is four, and the four heat-conducting cavities are grouped in pairs, with the two pairs of heat-conducting cavities arranged diagonally opposite each other.

[0007] In one embodiment, the projected shape of the heated sponge is equal to the projected shape of the first battery module and the second battery module.

[0008] In one embodiment, there are multiple heat sinks, with at least one heat sink disposed on the side of the first battery module adjacent to the heating sponge, and another heat sink disposed on the other side of the first battery module adjacent to the heating sponge.

[0009] In one embodiment, one of the heat sinks is disposed on the side of the second battery module adjacent to the heating sponge, and the other heat sink is disposed on the other side of the second battery module adjacent to the heating sponge.

[0010] In one embodiment, the integrated heat dissipation and heating battery pack structure further includes several mounting bracket groups, one of which is mounted at one end of the first battery module and another at the other end of the first battery module; one of which is mounted on the side of the second battery module adjacent to the heating sponge and another of which is mounted on the side of the second battery module away from the heating sponge.

[0011] In one embodiment, the mounting bracket assembly includes mounting blocks, and the mounting bracket assembly is composed of multiple mounting blocks assembled together, with adjacent mounting blocks being fixedly connected by a snap-fit ​​method.

[0012] A battery device comprising the integrated heat dissipation and heating battery pack structure described in any of the above embodiments.

[0013] Compared with the prior art, this disclosure has at least the following advantages: A heating sponge is fixedly disposed between the first battery module and the second battery module, and is tightly pressed together. A heat-conducting cavity is formed on the side of the heating sponge, with one end connected to the side of the first battery module. In low-temperature environments, the first and second battery modules are heated, dissipating heat to the heating sponge. Since the two ends of the heat-conducting cavity connect to the sides of the first and second battery modules, heat can be exchanged between them. This increases the temperature of the first and second battery modules, thereby increasing the activity of their cells. This allows the first and second battery modules to maintain normal operating performance, stable output power, and efficient charge / discharge capabilities even in low-temperature environments, effectively solving the problem of battery performance degradation and malfunction caused by low temperatures. Meanwhile, the heat sink is attached to the outer periphery of the first battery module and the second battery module. The heat sink is connected to the first battery module and the second battery module through a thermally conductive silicone pad, which fills the uneven gaps between the heat sink and the first and second battery modules, thereby eliminating the presence of air. This reduces the resistance in the process of heat conduction from the battery module to the heat sink. By setting the heat sink on the outer periphery of the first and second battery modules, the heat sink can reduce the temperature of the first and second battery modules when the temperature is too high. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this disclosure and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of a battery pack structure integrating heat dissipation and heating according to an embodiment of the present disclosure. Figure 2 This is a cross-sectional view of a battery pack structure integrating heat dissipation and heating according to an embodiment of the present disclosure; Figure 3 This is a schematic diagram of the structure of a heating sponge according to an embodiment of the present disclosure; Figure 4 This is a modeling diagram of a battery pack structure integrating heat dissipation and heating according to an embodiment of the present disclosure.

[0016] Reference numerals: 10, battery pack structure with integrated heat dissipation and heating; 100, first battery module; 200, second battery module; 300, heating sponge; 310, heat conduction cavity; 400, heat sink; 500, mounting bracket assembly; 510, mounting block. Detailed Implementation

[0017] To facilitate understanding of this disclosure, a more complete description will be given below with reference to the accompanying drawings, which illustrate preferred embodiments of the present disclosure. However, this disclosure can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure.

[0018] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this disclosure. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0020] To better understand the technical solutions and beneficial effects of this disclosure, the following detailed description is provided in conjunction with specific embodiments: like Figures 1 to 4 As shown, an embodiment of a battery pack structure 10 integrating heat dissipation and heating is characterized by comprising a first battery module 100, a second battery module 200, a heating sponge 300, and a heat sink 400; the heating sponge 300 is fixedly disposed between the first battery module 100 and the second battery module 200, the heating sponge 300 having a heat-conducting cavity 310, the heat-conducting cavity 310 being located on the side of the heating sponge 300, one end of the heat-conducting cavity 310 being connected to the side of the first battery module 100, and the other end of the heat-conducting cavity 310 being connected to the side of the second battery module 200; the heat sink 400 is fitted onto the outer periphery of the first battery module 100 and the outer periphery of the second battery module 200.

[0021] In this embodiment, the heating sponge 300 is fixedly disposed between the first battery module 100 and the second battery, and is fixed between the first battery module 100 and the second battery module 200 by tight pressing. At the same time, a heat-conducting cavity 310 is opened on the side of the heating sponge 300, and one end of the heat-conducting cavity 310 is connected to the side of the first battery module 100. When in a low-temperature environment, the first battery module 100 and the second battery module 200 are heated by dissipating heat to the heating sponge 300. The two ends of the heat-conducting cavity 310 are connected to the sides of the first battery module 100 and the second battery module 200, allowing heat to be exchanged between the first battery module 100 and the second battery module 200 through the heat-conducting cavity 310. By raising the temperature of the first battery module 100 and the second battery module 200, the activity of the battery cells in the first battery module 100 and the second battery module 200 is increased. This allows the first battery module 100 and the second battery module 200 to maintain normal working performance, stable output power, and efficient charge and discharge capabilities in a low-temperature environment, effectively solving the problem of battery performance degradation and malfunction caused by low temperatures. Meanwhile, the heat sink 400 is attached to the outer periphery of the first battery module 100 and the second battery module 200. The heat sink 400 is connected to the first battery module 100 and the second battery module 200 through a thermally conductive silicone pad, filling the uneven gaps between the heat sink 400 and the first battery module 100 and the second battery module 200, thereby eliminating the presence of air. This reduces the resistance in the process of heat conduction from the battery module to the heat sink 400. Since the heat sink 400 is located on the outer periphery of the first battery module 100 and the second battery module 200, it can reduce the temperature of the first battery module 100 and the second battery module 200 when the temperature is too high.

[0022] It should be noted that the temperature detection of the first battery module 100 and the second battery module 200 is performed by a BMS battery management test system. This battery management test system is existing technology and will not be described in detail here.

[0023] Combination Figures 1 to 4 As shown, in one embodiment, the heat-conducting cavity 310 extends through both sides of the heating sponge 300. It can be understood that the heat-conducting cavity 310 extends through both sides of the heating sponge 300, with one end of the heat-conducting cavity 310 connected to the first battery module 100 and the other end connected to the second battery module 200. This allows heat to be transferred between the first battery module 100 and the second battery module 200 through the heat-conducting cavity of the heating sponge 300, resulting in uniform heating of both the first battery module 100 and the second battery module 200.

[0024] Combination Figure 1 and Figure 3 As shown, furthermore, there are four heat-conducting cavities 310, which are grouped in pairs, with each pair of cavities 310 arranged diagonally opposite to the other. It can be understood that the four diagonally distributed heat-conducting cavities 310 form a symmetrical heat flow channel on the side of the battery module. This not only greatly promotes thermal equilibrium between the two battery modules, effectively avoiding localized overheating or undercooling caused by heat accumulation, thus ensuring a high degree of consistency in the internal temperature field of the battery pack; but also, compared to a single-path or asymmetrical layout, the multi-channel diagonal layout significantly increases the total area and efficiency of heat exchange. Whether under heating or cooling conditions, it enables the battery module to quickly and uniformly reach the target temperature, greatly improving the response speed and energy efficiency of the thermal management system, ultimately ensuring that all cells work collaboratively within the optimal temperature window, extending the overall lifespan of the battery pack.

[0025] Combination Figure 1 and Figure 3 As shown, in one embodiment, the projected shape of the heating sponge 300 is equal to the projected shape of the first battery module 100 and the second battery module 200. It can be understood that the equal projected shape ensures that the heating surface of the heating sponge 300 can make full-area close contact with the entire side surface of the first battery module 100 and the second battery module 200, greatly increasing the effective contact area for heat conduction. In heating mode, heat can be uniformly and directly transferred to the entire battery sidewall without dead angles, avoiding uneven local heating.

[0026] Combination Figure 1 and Figure 2 As shown, in one embodiment, there are multiple heat sinks 400, with at least one heat sink 400 disposed on the side of the first battery module 100 adjacent to the heating sponge 300, and another heat sink 400 disposed on the other side of the first battery module 100 adjacent to the heating sponge 300. It can be understood that by distributing a heat sink 400 on the side of the first battery module 100 adjacent to the heating sponge 300, and another heat sink 400 on the other side of the first battery module 100 adjacent to the heating sponge 300, the two heat sinks 400 can be fitted together on both sides of the first battery module 100. Therefore, when the temperature of the first battery module 100 rises, the two heat sinks 400 can locally dissipate heat from both sides of the first battery module 100, causing the temperature of the first battery module 100 to decrease.

[0027] Combination Figure 1 and Figure 2As shown, further, one heat sink 400 is disposed on the side of the second battery module 200 adjacent to the heating sponge 300, and the other heat sink 400 is disposed on the other side of the second battery module 200 adjacent to the heating sponge 300. Similarly, by distributing a heat sink 400 on the side of the second battery module 200 adjacent to the heating sponge 300, and distributing another heat sink 400 on the other side of the second battery module 200 adjacent to the heating sponge 300, the two heat sinks 400 can be fitted together on both sides of the second battery module 200. Thus, when the temperature of the second battery module 200 rises, the two heat sinks 400 can locally dissipate heat from both sides of the second battery module 200, thereby lowering the temperature of the second battery module 200.

[0028] Combination Figure 1 and Figure 2 As shown, in one embodiment, the integrated heat dissipation and heating battery pack structure 10 further includes several mounting bracket groups 500. One mounting bracket group 500 is mounted at one end of the first battery module 100, and another mounting bracket group 500 is mounted at the other end of the first battery module 100. One mounting bracket group 500 is mounted on the side of the second battery module 200 adjacent to the heating sponge 300, and another mounting bracket group 500 is mounted on the side of the second battery module 200 away from the heating sponge 300. It can be understood that by setting multiple mounting bracket groups 500 and adopting a symmetrically distributed installation method, a stable and reliable structural support and fixation is provided for the entire battery pack. Specifically, the bracket groups mounted at both ends of the first battery module 100 ensure its positioning and constraint in the length direction; while the bracket groups mounted on both sides of the second battery module 200 (i.e., adjacent to and away from the heating sponge 300 respectively) cooperate with the bracket groups of the first battery module 100 to jointly form a stable frame structure. The frame tightly integrates the first battery module 100, the second battery module 200, and the heating sponge 300 sandwiched therein into a whole.

[0029] Combination Figure 1 and Figure 2As shown, the integrated heat dissipation and heating battery pack structure 10 further includes several mounting bracket groups 500. One mounting bracket group 500 is mounted at one end of the first battery module 100, and another mounting bracket group 500 is mounted at the other end of the first battery module 100. One mounting bracket group 500 is mounted on the side of the second battery module 200 adjacent to the heating sponge 300, and another mounting bracket group 500 is mounted on the side of the second battery module 200 away from the heating sponge 300. It can be understood that the mounting bracket group 500 is composed of modular mounting blocks 510 and is fixed by a snap-fit ​​connection without threads. This design makes each mounting block 510 an independent standard component, which can be flexibly combined and arranged according to the specific size of the battery module and the location requirements of the mounting point. Adjacent mounting blocks 510 are interlocked and locked together by a precisely designed snap-fit ​​structure, forming a strong and stable support frame.

[0030] This application also provides a battery device, including the integrated heat dissipation and heating battery pack structure described in any of the above embodiments. It is understood that applying the above-described integrated heat dissipation and heating battery pack structure to a battery device effectively solves the problem of the battery device failing to function properly when the temperature is too low, and effectively reduces the temperature of the battery device when the temperature is too high.

[0031] Compared with the prior art, this disclosure has at least the following advantages: The heating sponge 300 is fixedly disposed between the first battery module 100 and the second battery, and is fixed between the first battery module 100 and the second battery module 200 by tight pressing. At the same time, a heat conduction cavity 310 is opened on the side of the heating sponge 300, and one end of the heat conduction cavity 310 is connected to the side of the first battery module 100. When in a low-temperature environment, the first battery module 100 and the second battery module 200 are heated by dissipating heat to the heating sponge 300. The two ends of the heat-conducting cavity 310 are connected to the sides of the first battery module 100 and the second battery module 200, allowing heat to be exchanged between the first battery module 100 and the second battery module 200 through the heat-conducting cavity 310. By raising the temperature of the first battery module 100 and the second battery module 200, the activity of the battery cells in the first battery module 100 and the second battery module 200 is increased. This allows the first battery module 100 and the second battery module 200 to maintain normal working performance, stable output power, and efficient charge and discharge capabilities in a low-temperature environment, effectively solving the problem of battery performance degradation and malfunction caused by low temperatures. Meanwhile, the heat sink 400 is attached to the outer periphery of the first battery module 100 and the second battery module 200. The heat sink 400 is connected to the first battery module 100 and the second battery module 200 through a thermally conductive silicone pad, filling the uneven gaps between the heat sink 400 and the first battery module 100 and the second battery module 200, thereby eliminating the presence of air. This reduces the resistance in the process of heat conduction from the battery module to the heat sink 400. Since the heat sink 400 is located on the outer periphery of the first battery module 100 and the second battery module 200, it can reduce the temperature of the first battery module 100 and the second battery module 200 when the temperature is too high.

[0032] The embodiments described above are merely illustrative of several implementations of this disclosure, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this disclosure, and these all fall within the protection scope of this disclosure. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A battery pack structure integrating heat dissipation and heating, characterized in that, The device includes a first battery module, a second battery module, a heating sponge, and a heat sink. The heating sponge is fixedly disposed between the first battery module and the second battery module. The heating sponge has a heat-conducting cavity on its side. One end of the heat-conducting cavity is connected to the side of the first battery module, and the other end is connected to the side of the second battery module. The heat sink is fitted onto the outer periphery of both the first battery module and the second battery module.

2. The battery pack structure integrating heat dissipation and heating according to claim 1, characterized in that, The heat-conducting cavity extends through both sides of the heated sponge.

3. The battery pack structure with integrated heat dissipation and heating according to claim 2, characterized in that, The number of heat-conducting cavities is four, and the four heat-conducting cavities are grouped in pairs, with the two pairs of heat-conducting cavities arranged diagonally opposite each other.

4. The battery pack structure integrating heat dissipation and heating according to claim 3, characterized in that, The projected shape of the heated sponge is equal to the projected shape of the first battery module and the second battery module.

5. The battery pack structure integrating heat dissipation and heating according to claim 1, characterized in that, The number of heat sinks is multiple, wherein at least one heat sink is disposed on the side of the first battery module adjacent to the heating sponge, and another heat sink is disposed on the other side of the first battery module adjacent to the heating sponge.

6. The battery pack structure with integrated heat dissipation and heating according to claim 5, characterized in that, One of the heat sinks is disposed on the side of the second battery module adjacent to the heating sponge, and the other heat sink is disposed on the other side of the second battery module adjacent to the heating sponge.

7. The battery pack structure with integrated heat dissipation and heating according to claim 6, characterized in that, The integrated heat dissipation and heating battery pack structure also includes several mounting bracket groups. One mounting bracket group is installed at one end of the first battery module, and another mounting bracket group is installed at the other end of the first battery module. One mounting bracket group is installed on the side of the second battery module adjacent to the heating sponge, and another mounting bracket group is installed on the side of the second battery module away from the heating sponge.

8. The battery pack structure with integrated heat dissipation and heating according to claim 7, characterized in that, The mounting bracket assembly includes mounting blocks, which are assembled from multiple mounting blocks, and adjacent mounting blocks are fixedly connected by a snap-fit ​​method.

9. A battery device, characterized in that, The battery pack structure includes the integrated heat dissipation and heating as described in any one of claims 1 to 8.

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