Cooling assembly, battery pack and vehicle

Abstract

The utility model discloses a cooling assembly, battery pack and vehicle, cooling assembly includes slave control module, first heat conduction structure, heat conduction structural member and cooling part, slave control module is electrically connected with battery module, first heat conduction structure clings to slave control module, heat conduction structural member clings to first heat conduction structure, cooling part is used for the cooling of battery module, the heat-conducting structural member is connected with the cooling component through the second heat-conducting structure. In the embodiment of the utility model, in the working process of the slave control module, the heat of the slave control module can be transmitted to the cooling component through the first heat conduction structure, the heat conduction structural member and the second heat conduction structure, so that the heat of the slave control module can be dissipated, the slave control module is cooled, and the temperature rise caused by heating of the slave control module is avoided.

Description

Technical Field

[0001] This utility model relates to the field of battery pack technology, and in particular to a cooling component, a battery pack, and a vehicle. Background Technology

[0002] Battery Management System (BMS) typically adopts a master-slave mode. In this mode, the master control circuit board and the slave control circuit board are electrically connected, and the slave control circuit board is electrically connected to the battery cell. The slave control circuit board collects information such as the voltage and temperature of the battery cell and feeds it back to the master control circuit board.

[0003] In related technologies, the slave control circuit board is usually integrated into the battery pack, and the distance between the slave control circuit board and the adjacent battery cell is small.

[0004] During the operation of the control circuit board, such as during the equalization control of the battery cells, the control circuit board will generate heat. After the heat is generated, the temperature of the control circuit board will rise, which will affect the temperature of the adjacent battery cells, and thus affect the temperature consistency of each battery cell. Utility Model Content

[0005] This invention provides a cooling component, a battery pack, and a vehicle, aiming to at least solve the technical problem in the prior art where the slave control circuit board heats up during the process of controlling cell balancing, and the increased temperature of the slave control circuit board affects the temperature of the adjacent battery cells.

[0006] In a first aspect of this utility model, a cooling assembly is provided, comprising:

[0007] The slave control module is electrically connected to the battery module;

[0008] The first heat-conducting structure is in close contact with the slave control module;

[0009] A heat-conducting structural component is in close contact with the first heat-conducting structure;

[0010] A cooling component is provided for cooling the battery module, and the heat-conducting structural component is connected to the cooling component via a second heat-conducting structure.

[0011] Optionally, the heat-conducting structural component is a slave control housing, and the slave control module is installed inside the slave control housing.

[0012] Optionally, the first thermally conductive structure is a first thermally conductive adhesive, and the slave control module is bonded to the slave control housing through the first thermally conductive adhesive.

[0013] Optionally, the second thermally conductive structure is a second thermally conductive adhesive, and the slave control housing is bonded to the cooling component through the second thermally conductive adhesive.

[0014] Optionally, the heat-conducting structural component is an expansion beam in the battery pack;

[0015] The second thermally conductive structure is a sealant with thermal conductivity, and the expansion beam is bonded to the cooling component through the sealant.

[0016] Optionally, the first thermally conductive structure is a thermally conductive pad;

[0017] The thermal pad is bonded to the slave control module and / or the expansion beam.

[0018] Optionally, the thermal conductivity of the first thermally conductive structure is greater than or equal to 0.2 W / (m·K);

[0019] And / or, the thermal conductivity of the second thermally conductive structure is greater than or equal to 0.2 W / (m·K).

[0020] Optionally, the cooling component is a liquid cooling plate;

[0021] And / or, the cooling component is located below the battery module.

[0022] In a second aspect of this invention, a battery pack is also provided, including the cooling assembly described above.

[0023] In a third aspect of this invention, a vehicle is also provided, including the battery pack described above.

[0024] In this embodiment of the invention, during the operation of the slave control module, such as during the equalization control of the battery cells, the heat of the slave control module can be transferred to the cooling component through the first heat-conducting structure, the heat-conducting structural component, and the second heat-conducting structure. This dissipates the heat of the slave control module, achieving cooling and preventing the temperature of the slave control module from rising due to heat generation. Consequently, it prevents the temperature of adjacent battery cells from being affected by the temperature rise of the slave control module, thus avoiding affecting the temperature consistency of each battery cell. Furthermore, the cooling component used for cooling the battery module can be used to cool the slave control module, eliminating the need for additional cooling structures and simplifying the structure of the battery pack including this cooling component. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0026] Figure 1 This is a three-dimensional structural diagram of a cooling component provided in an embodiment of the present utility model;

[0027] Figure 2This is a cross-sectional view of a cooling assembly provided in an embodiment of the present utility model;

[0028] Figure 3 This is a three-dimensional structural diagram of the slave control module and slave control housing in a cooling assembly provided in an embodiment of the present utility model;

[0029] Figure 4 This is a cross-sectional structural diagram of one cooling component and another cooling component provided in the embodiments of this utility model.

[0030] Figure label:

[0031] 1-Slave control component, 11-Slave control module, 12-Slave control housing, 121-Front housing, 122-Rear housing, 2-First thermally conductive adhesive, 3-Second thermally conductive adhesive, 4-Cooling component, 5-Thermal conductive pad, 6-Expansion beam, 7-Battery module, 8-Main body of the housing. Detailed Implementation

[0032] The technical solutions of the present invention will now be described with reference to the accompanying drawings in the embodiments of the present invention.

[0033] The embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention. The invention will be described more specifically in the following paragraphs by way of example with reference to the accompanying drawings. It should be noted that the drawings are in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the invention.

[0034] In related technologies, the slave control circuit board is typically integrated within the battery pack, with a small distance between the slave control circuit board and the adjacent battery cells. During operation, such as during cell equalization control, a small current flows through the slave control circuit board, causing the electrical components within it to heat up. This heat, in turn, raises the temperature of the slave control circuit board, affecting the temperature of the adjacent battery cells and consequently impacting the temperature uniformity of each cell. To address these issues, this invention provides a cooling assembly, a battery pack, and a vehicle. The cooling assembly, battery pack, and vehicle described above are described in detail below.

[0035] Firstly, referring to Figures 1 to 4 The cooling assembly provided in this embodiment of the utility model includes a slave control module 11, a first heat-conducting structure, a heat-conducting structural component, and a cooling component. The slave control module 11 is electrically connected to the battery module 7. The first heat-conducting structure is in close contact with the slave control module 11, and the heat-conducting structural component is in close contact with the first heat-conducting structure. The cooling component 4 is used for cooling the battery module 7, and the heat-conducting structural component is connected to the cooling component 4 through a second heat-conducting structure.

[0036] The cooling component is applied to the battery pack, which includes battery modules 7. Each battery module 7 includes a cell assembly, which is typically formed by stacking multiple cells along its length. The slave control module 11 can be a slave control circuit board, which is the circuit board in the battery management system used to monitor, manage, and control the cells. The slave control circuit board includes a circuit board body and electrical components arranged on the circuit board body. Specifically, the slave control module 11 is electrically connected to the cells in the cell assembly to collect information such as the cell's voltage and temperature, and to perform equalization control on the cells.

[0037] The thermally conductive structural component is made of a thermally conductive material, such as metal. The thermally conductive structural component can be the slave control housing 12, the expansion beam 6 in the battery pack, or other thermally conductive structural components adjacent to the slave control module 11 in the battery pack. The first thermally conductive structure is preferably located between the slave control module 11 and the thermally conductive structural component, and the first thermally conductive structure is in close contact with both the slave control module 11 and the thermally conductive structural component. The first thermally conductive structure can be thermally conductive adhesive, thermally conductive pad, thermally conductive silicone grease, metal thermally conductive sheet, etc. The cooling component 4 can be a liquid-cooled component, such as a liquid cooling plate. The second thermally conductive structure can be thermally conductive adhesive, thermally conductive sealant, thermally conductive pad, thermally conductive silicone grease, metal thermally conductive sheet, etc.

[0038] In this embodiment of the invention, during the operation of the slave control module 11, such as during the equalization control of the battery cells, the heat of the slave control module 11 can be transferred to the cooling component 4 through the first heat-conducting structure, the heat-conducting structural component, and the second heat-conducting structure. This dissipates the heat of the slave control module 11, achieving cooling of the slave control module 11 and preventing its temperature from rising due to heat generation. Consequently, the temperature of adjacent battery cells is not affected by the temperature rise of the slave control module 11, thus preventing any impact on the temperature consistency of the individual battery cells. Furthermore, the cooling component 4, which is used to cool the battery module 7, can be used to cool the slave control module 11, eliminating the need for additional cooling structures and simplifying the structure of the battery pack including this cooling component.

[0039] In an optional embodiment of this utility model, reference is made to Figure 2 The heat-conducting structural component is the slave control housing 12, and the slave control module 11 is installed inside the slave control housing 12.

[0040] In this embodiment, the slave housing 12 and the slave module 11 together constitute the slave component 1. (Refer to...) Figure 3The slave control housing 12 may include a front housing 121 and a rear housing 122. The front housing 121 and the rear housing 122 are detachably connected to facilitate the maintenance of the internal slave control module 11. The connection method between the front housing 121 and the rear housing 122 can be screw connection, snap-fit, etc. The front housing 121 and the rear housing 122 form an accommodating space, within which the slave control module 11 is located. The slave control module 11 can be detachably connected to either the front housing 121 or the rear housing 122.

[0041] The slave control housing 12 is located above the cooling component 4. In this embodiment, the heat from the slave control module 11 is transferred to the cooling component 4 through the first heat-conducting structure, the slave control housing 12, and the second heat-conducting structure. In this embodiment, the slave control housing 12 serves a protective function, and the heat from the slave control module 11 can be transferred to the cooling component 4 in a vertical direction using the slave control housing 12. The heat transfer path is short, which can accelerate the heat dissipation speed. It should be noted that the vertical direction is also the height direction of the battery pack.

[0042] In an optional embodiment of this utility model, reference is made to Figure 2 The first thermally conductive structure is the first thermally conductive adhesive 2, and the slave control module 11 is bonded to the slave control housing 12 through the first thermally conductive adhesive 2.

[0043] The thermally conductive adhesive is a material with high thermal conductivity and adhesion properties. The first thermally conductive adhesive 2 can be epoxy resin, silicone, polyurethane, etc. After curing, the first thermally conductive adhesive 2 can be softened by heating, allowing for non-destructive disassembly of the slave control module 11. In this embodiment, when the slave control module 11 is bonded to the slave control housing 12 via the first thermally conductive adhesive 2, it facilitates the disassembly and maintenance of the slave control module 11, and the first thermally conductive adhesive 2 has good gap-filling ability.

[0044] The number of slave control components 1 can be multiple. When multiple slave control components 1 are integrated into the battery pack, the multiple slave control components 1 are arranged at intervals along the width direction of the battery pack. The width direction of the battery pack can be referred to... Figure 1 The direction indicated by arrow A in the middle. The number of first thermally conductive adhesives 2 is preferably equal to the number of slave control components 1, that is, in each slave control component 1, a first thermally conductive adhesive 2 is provided between the slave control module 11 and the slave control housing 12.

[0045] In this embodiment, along the thickness direction of the slave control component 1, the thickness of the front housing 121 is less than the width and thickness of the rear housing 122, and the slave control module 11 is located inside the rear housing 122. The thickness direction of the slave control component 1 can be referenced... Figure 3The direction indicated by arrow B. The rear housing 122 has an inner bottom wall, and the bottom of the control module 11 is bonded to the inner bottom wall of the rear housing 122 by a first thermally conductive adhesive 2. The orthographic projection of the first thermally conductive adhesive 2 on the inner bottom wall of the rear housing 122 covers the orthographic projection of the bottom of the control module 11 on the inner bottom wall, and the area of ​​the orthographic projection of the first thermally conductive adhesive 2 on the inner bottom wall of the rear housing 122 is preferably greater than or equal to 80% of the area of ​​the inner bottom wall.

[0046] Along the thickness direction of the slave control component 1, the width of the first thermally conductive adhesive 2 is greater than the thickness of the slave control module 11 and less than or equal to the thickness of the rear housing 122. Along the length direction of the slave control component 1, the length of the first thermally conductive adhesive 2 is greater than or equal to the length of the slave control module 11. When the slave control component 1 is integrated into the battery pack, the length direction of the slave control component 1 is parallel to the width direction of the battery pack. The thickness of the first thermally conductive adhesive 2 can be set according to actual needs, for example, it can be set to be greater than or equal to 1 mm.

[0047] In an optional embodiment of this utility model, reference is made to Figure 2 The second thermally conductive structure is the second thermally conductive adhesive 3, and the control housing 12 is bonded to the cooling component 4 through the second thermally conductive adhesive 3.

[0048] The second thermally conductive adhesive 3 can be epoxy resin thermally conductive adhesive, silicone thermally conductive adhesive, polyurethane thermally conductive adhesive, etc. After the second thermally conductive adhesive 3 has cured, it can be softened by heating, allowing for non-destructive disassembly of the slave control component 1. In this embodiment, when the slave control housing 12 is bonded to the cooling component 4 via the second thermally conductive adhesive 3, it facilitates the disassembly of the slave control component 1, and the second thermally conductive adhesive 3 has good gap-filling ability.

[0049] When there are multiple slave control components 1, the second thermally conductive adhesive 3 can be a single strip. When there are multiple slave control components 1, the number of second thermally conductive adhesive 3 can also be equal to the number of slave control components 1; for example, when there are six slave control components 1, there are six second thermally conductive adhesive 3. The slave control housing 12 has an outer bottom wall, and the orthographic projection of the second thermally conductive adhesive 3 onto the outer bottom wall of the slave control housing 12 preferably covers the outer bottom wall. The second thermally conductive adhesive 3 can be set according to actual needs; for example, it can be set to be greater than or equal to 1 mm.

[0050] In this embodiment, the heat transfer path of the slave control module 11 is as follows: slave control module 11 → first thermally conductive adhesive 2 → slave control housing 12 → second thermally conductive adhesive 3 → cooling component 4. During the operation of the slave control module 11, such as during the equalization control of the battery cell, the heat of the slave control module 11 can be transferred to the cooling component 4 through the first thermally conductive adhesive 2, the slave control housing 12, and the second thermally conductive adhesive 3, thereby dissipating the heat of the slave control module 11 and cooling the slave control module 11, preventing the temperature of the slave control module 11 from rising due to heat generation.

[0051] In an optional embodiment of this utility model, reference is made to Figure 4 The first thermally conductive structural component is the expansion beam 6 in the battery pack; the second thermally conductive structure is a thermally conductive sealant, and the expansion beam 6 is bonded to the cooling component 4 via the sealant. The length direction of the expansion beam 6 is parallel to the width direction of the battery pack. The thermally conductive sealant combines thermal conductivity and sealing properties, providing waterproof, dustproof, and vibration-resistant sealing protection while filling uneven interfaces, eliminating air gaps, and conducting heat.

[0052] In an optional embodiment of this utility model, reference is made to Figure 4 The first thermally conductive structure is a thermally conductive pad 5; the thermally conductive pad 5 is bonded to the slave control module 11 and / or the expansion beam 6.

[0053] The thermal pad 5 can be a thermally conductive silicone pad, a thermally conductive rubber pad, a thermally conductive polyurethane pad, etc. The thickness of the thermal pad 5 can be set according to actual needs, for example, it can be greater than or equal to 3mm. Preferably, the thermal pad 5 has single-sided adhesive backing, and is bonded to the expansion beam 6 using this adhesive. When there are multiple slave control components 1, the thermal pad 5 can be a single strip. When there are multiple slave control components 1, the number of thermal pads 5 can also be equal to the number of slave control components 1; for example, when there are six slave control components 1, there are six thermal pads 5.

[0054] The heat transfer path of the slave control module 11 is as follows: slave control module 11 → thermal pad 5 → expansion beam 6 → sealant → cooling component 4. During the operation of the slave control module 11, such as during the equalization control of the battery cells, the heat of the slave control module 11 can be transferred to the cooling component 4 through the thermal pad 5, expansion beam 6, and sealant, thereby dissipating the heat of the slave control module 11 and cooling it, preventing the slave control module 11 from overheating.

[0055] In this embodiment, the slave control component 1 may only include the slave control module 11, excluding the slave control housing 12. Alternatively, the slave control component 1 may include both the slave control module 11 and the slave control housing 12, but the slave control housing 12 may only include the front housing 121, excluding the rear housing 122. The slave control module 11 is detachably connected to the front housing 121. In this embodiment, the heat from the slave control module 11 can be transferred to the cooling component 4 through the thermal pad 5, expansion beam 6, and sealant. The heat transfer from the slave control module 11 does not depend on the slave control housing 12, thus eliminating some or all of the slave control housing 12 and reducing costs.

[0056] In one optional embodiment of the present invention, the thermal conductivity of the first thermally conductive structure is greater than or equal to 0.2 W / (m·K); and / or, the thermal conductivity of the second thermally conductive structure is greater than or equal to 0.2 W / (m·K).

[0057] The thermal conductivity affects the amount of heat transferred by the heat-conducting structure per unit time. Under the same conditions, the higher the thermal conductivity, the greater the amount of heat transferred per unit time. The thermal conductivity also affects thermal resistance; under the same conditions, the higher the thermal conductivity, the lower the thermal resistance. In this embodiment, the thermal conductivity of the first and second heat-conducting structures is greater than or equal to 0.2 W / (m·K). Both structures exhibit good thermal conductivity, resulting in low thermal resistance and fast heat conduction.

[0058] In an optional embodiment of this invention, the cooling component 4 is a liquid cooling plate; and / or, the cooling component 4 is located below the battery module 7.

[0059] In this design, the battery cell assembly in battery module 7 is bonded to the cooling component 4 using thermally conductive adhesive. The liquid cooling plate carries away heat through the flow of coolant, exhibiting high thermal conductivity and heat dissipation capabilities. When the cooling component 4 is located below the battery module 7, the heat from the battery module 7 can be transferred vertically to the cooling component 4, shortening the heat transfer path and thus accelerating heat dissipation.

[0060] Secondly, this utility model embodiment provides a battery pack, which includes a cooling assembly as described in the first aspect. The cooling assembly includes a slave control module 11, a first heat-conducting structure, a heat-conducting structural member, and a cooling component. The slave control module 11 is electrically connected to the battery module 7. The first heat-conducting structure is in close contact with the slave control module 11, and the heat-conducting structural member is in close contact with the first heat-conducting structure. The cooling component 4 is used for cooling the battery module 7, and the heat-conducting structural member is connected to the cooling component 4 through a second heat-conducting structure.

[0061] The battery pack also includes a battery module 7, which includes a cell assembly. The cell assembly is typically formed by stacking multiple cells along its length. The cell assembly is bonded to the cooling component 4 using thermally conductive adhesive. The battery pack also includes a housing body 8, to which an expansion beam 6 is fixed. The expansion beam 6 is bonded to the end of the battery module 7, and the control component 1 is located on the side of the expansion beam 6 away from the battery module 7 along its width.

[0062] Since the battery pack includes the aforementioned cooling components, it also possesses the beneficial effects of the aforementioned cooling components, which will not be elaborated upon here.

[0063] Thirdly, this utility model embodiment also provides a vehicle including the battery pack provided in the second aspect above.

[0064] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0065] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0066] The various embodiments in this specification are described in a related manner. Similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions of the method embodiments.

[0067] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model are included within the scope of protection of this utility model.

[0068] The cooling components, battery pack, and vehicle provided by this utility model have been described in detail above. Specific examples have been used to illustrate the principle and implementation of this utility model. The description of the above embodiments is only for the purpose of helping to understand the structure and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A cooling assembly, characterized in that, include: The slave control module is electrically connected to the battery module; The first heat-conducting structure is in close contact with the slave control module; A heat-conducting structural component is in close contact with the first heat-conducting structure; A cooling component is provided for cooling the battery module, and the heat-conducting structural component is connected to the cooling component via a second heat-conducting structure.

2. The cooling assembly according to claim 1, characterized in that, The heat-conducting structural component is a slave-controlled housing, and the slave-controlled module is installed inside the slave-controlled housing.

3. The cooling assembly according to claim 2, characterized in that, The first thermally conductive structure is a first thermally conductive adhesive, and the slave control module is bonded to the slave control housing through the first thermally conductive adhesive.

4. The cooling assembly according to claim 2, characterized in that, The second thermally conductive structure is a second thermally conductive adhesive, and the slave control housing is bonded to the cooling component through the second thermally conductive adhesive.

5. The cooling assembly according to claim 1, characterized in that, The heat-conducting structural component is the expansion beam in the battery pack; The second thermally conductive structure is a sealant with thermal conductivity, and the expansion beam is bonded to the cooling component through the sealant.

6. The cooling assembly according to claim 5, characterized in that, The first thermally conductive structure is a thermally conductive pad; The thermal pad is bonded to the slave control module and / or the expansion beam.

7. The cooling assembly according to claim 1, characterized in that, The thermal conductivity of the first heat-conducting structure is greater than or equal to 0.2 W / (m·K); And / or, the thermal conductivity of the second thermally conductive structure is greater than or equal to 0.2 W / (m·K).

8. The cooling assembly according to claim 1, characterized in that, The cooling component is a liquid cooling plate; And / or, the cooling component is located below the battery module.

9. A battery pack, characterized in that, Includes the cooling assembly as described in any one of claims 1 to 8.

10. A vehicle, characterized in that, Includes the battery pack as described in claim 9.

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