Battery pack facilitating heat dissipation

Abstract

This application relates to a battery pack with convenient heat dissipation, belonging to the field of battery heat dissipation technology. It includes a battery casing, a battery holder installed in the battery casing, and a battery module installed in the battery holder. The battery module has a module unit, which includes a heat dissipation frame and multiple battery cells arranged in parallel within the heat dissipation frame. The heat dissipation frame is made of ceramic material. Because the heat dissipation frame has a surface where the battery cells are in close contact, the heat dissipation frame absorbs the heat released by the battery cells during charging and discharging, reducing the temperature rise of the battery cells. This application has the effect of improving the heat dissipation of the battery pack.

Description

Technical Field

[0001] This utility model relates to the field of battery heat dissipation technology, and in particular to a battery pack that facilitates heat dissipation. Background Technology

[0002] A battery pack is an energy storage device composed of multiple battery cells connected in series and parallel, and integrated with key components such as a battery management system and a thermal management system. Battery packs are widely used in various devices that require energy storage, including electric vehicles, energy storage systems, and portable electronic devices.

[0003] Existing battery packs include a battery casing, battery modules housed within the casing, and heat dissipation components within the casing for cooling the battery modules. To ensure waterproofing, the battery casing is typically designed as a sealed structure. However, heat is generated when the batteries within the pack are charged and discharged. This heat accumulates within the sealed casing, easily causing the battery temperature to rise continuously.

[0004] Traditionally, battery pack cooling primarily relies on natural airflow. This method depends on the surrounding air carrying away the heat generated by the battery to lower its temperature. However, when faced with a large amount of heat generated by the battery, airflow cooling often fails to dissipate the heat effectively and promptly, resulting in poor heat dissipation.

[0005] In response to the above problems, the inventors believe that there is a need to provide a battery pack with better heat dissipation. Utility Model Content

[0006] In order to effectively improve the heat dissipation of the battery pack, this application provides a battery pack that facilitates heat dissipation.

[0007] This application provides a battery pack that facilitates heat dissipation, employing the following technical solution:

[0008] A battery pack with heat dissipation features includes a battery casing, a battery holder installed within the battery casing, and a battery module installed within the battery holder. The battery module has a module unit, which includes a heat sink and a plurality of battery units arranged in parallel within the heat sink. The heat sink is made of ceramic material.

[0009] By adopting the above technical solution, the battery casing is equipped with a battery retainer and a battery module. The battery module consists of multiple stacked module units. Multiple parallel battery units are installed in the heat sink of the module unit, and the heat sink material is ceramic, which effectively improves the heat dissipation effect of the battery pack.

[0010] Optionally, at least one of the upper and lower surfaces of the heat sink is provided with a ventilation structure; the ventilation structure includes a plurality of ventilation grooves arranged at intervals along the width direction and penetrating both ends of the heat sink; the battery casing is provided with an air inlet and an air outlet, both of which communicate with the ventilation grooves.

[0011] By adopting the above technical solution, at least one surface of the heat sink is provided with a ventilation structure. Multiple ventilation grooves in the ventilation structure penetrate both ends of the heat sink and communicate with the air inlet and outlet of the battery casing, allowing air to flow within the ventilation grooves, carrying away the heat generated by the battery cells, and effectively improving the heat dissipation effect of the battery pack.

[0012] Optionally, the heat sink includes an upper heat sink base and a lower heat sink base. The upper heat sink base has an upper limit groove for arranging the battery cell, and the lower heat sink base also has a lower limit groove for arranging the battery cell.

[0013] By adopting the above technical solution, the upper heat sink and the lower heat sink are provided with upper limit groove and lower limit groove, which can fix the position of the battery unit and ensure the stability of the battery module structure.

[0014] Optionally, the upper and lower surfaces of the heat sink are provided with ventilation structures, and the ventilation grooves include an upper groove on the top surface of the heat sink and a lower groove on the bottom surface of the heat sink; in two adjacent module units, the lower groove of the upper module unit and the upper groove of the lower module unit are arranged correspondingly and connected to form a heat dissipation through hole.

[0015] By adopting the above technical solution, the specific structure of the ventilation groove is disclosed. The air inlet and outlet of the battery casing are connected to the ventilation groove. The ventilation groove consists of an upper groove on the bottom surface of the upper heat sink and a lower groove on the top surface of the lower heat sink, and the upper and lower grooves of adjacent module units form heat dissipation holes, which can increase the contact area between air and heat sink, allowing air to flow better in the battery module and more effectively remove the heat generated by the battery, thereby improving the heat dissipation effect of the battery pack.

[0016] Optionally, the battery holder includes a left holder and a right holder, the left holder having a left slot for inserting the battery cell, and the right holder having a right slot for inserting the end of the battery cell; a locking structure for clamping the battery module is provided between the left holder and the right holder.

[0017] By adopting the above technical solution, the battery unit can be inserted into the left slot and the right slot. With the help of the locking structure, the left retainer and the right retainer can firmly clamp the battery module, ensuring the stability of the battery module in the battery pack and preventing it from shaking.

[0018] Optionally, the locking structure includes a locking post disposed inside the left retainer, a locking through hole disposed on the right retainer and corresponding to the locking post, and a locking screw threadedly engaged with the locking post; an arrangement through hole for the locking post to pass through is also provided between adjacent heat sinks.

[0019] By adopting the above technical solution, the specific structure of the locking structure is disclosed. This structure allows the locking post to pass through the arrangement through-hole between adjacent heat sinks and the locking through-hole of the right retainer. A locking screw engages with the threaded locking post, enabling the left and right retainers to clamp and lock the battery module, ensuring the battery module is stably installed within the battery retainer.

[0020] Optionally, the air inlet is located at one end of the top surface of the battery casing, and the air outlet is located on the side wall of the battery casing away from the air inlet.

[0021] By adopting the above technical solution, the air inlet is located at one end of the top surface of the battery casing, and the air outlet is located on the side wall of the battery casing away from the air inlet. This allows air to enter through the air inlet, pass through the ventilation grooves to fully remove the heat generated by the battery, and finally be discharged from the air outlet, thus more effectively improving the heat dissipation effect of the battery pack.

[0022] Optionally, it may also include a battery control element electrically connected to the battery module.

[0023] By adopting the above technical solution, the battery control element is electrically connected to the battery module, which enables the control and management of the battery module. Combined with the overall heat dissipation structure of the battery pack, this ensures that the battery module operates under suitable conditions and achieves better heat dissipation.

[0024] In summary, this application includes at least one of the following beneficial technical effects:

[0025] 1. A battery pack with heat dissipation, comprising a battery casing, a battery holder installed inside the battery casing, and a battery module installed inside the battery holder; the battery module is composed of multiple stacked module units, and multiple parallel battery units are installed in the heat dissipation frame of the module unit, and the heat dissipation frame is made of ceramic material, which effectively improves the heat dissipation effect of the battery pack.

[0026] 2. By setting the number of module units to two, sufficient heat dissipation area can be ensured while reducing structural complexity, which helps to reduce costs and facilitate assembly;

[0027] 3. By placing the air inlet at one end of the top surface of the battery casing and the air outlet on the side wall of the battery casing away from the air inlet, the air can enter through the air inlet, pass through the ventilation grooves to fully remove the heat generated by the battery, and finally be discharged from the air outlet. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of a battery pack structure that facilitates heat dissipation in this embodiment.

[0029] Figure 2 This is an exploded view of a battery pack that facilitates heat dissipation according to this embodiment.

[0030] Figure 3 This is an exploded view of the battery module in this embodiment.

[0031] Figure 4 This is an exploded view of the module unit in this embodiment.

[0032] Figure 5 yes Figure 4 A magnified view of a portion of point A in the middle.

[0033] Figure 6 This is a rear view of a battery pack designed for easy heat dissipation in this embodiment.

[0034] Explanation of reference numerals in the attached drawings: 1. Battery casing; 11. Air inlet; 12. Air outlet; 2. Battery retainer; 21. Left retainer; 211. Left slot; 22. Right retainer; 221. Right slot; 23. Locking structure; 231. Locking post; 232. Locking through hole; 233. Locking screw; 3. Battery module; 4. Battery control element; 5. Module unit; 51. Heat sink; 511. Upper heat sink base; 5111. Upper limit slot; 512. Lower heat sink base; 5121. Lower limit slot; 52. Battery unit; 53. Ventilation structure; 531. Ventilation groove; 5311. Upper groove; 5312. Lower groove; 532. Heat dissipation through hole; 54. Arrangement through hole. Detailed Implementation

[0035] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0036] This application discloses a battery pack that facilitates heat dissipation. (See also...) Figure 1 and Figure 2 A heat-dissipating battery pack includes a battery casing 1, a battery holder 2 installed inside the battery casing 1, a battery module 3 installed inside the battery holder 2, and a battery control element 4 electrically connected to the battery module 3. The battery module 3 is fixed inside the battery casing 1 by the battery holder 2, and the battery control element 4 is electrically connected to the battery module 3 to control the operation of the battery module 3. The number of module units 5 in the battery module 3 can be selected as one, two, three, or more according to power and style requirements. In this embodiment, the battery module 3 has two module units 5, and the two battery modules are stacked vertically.

[0037] Reference Figure 3 and Figure 4The module unit 5 includes a heat sink 51 and a plurality of battery units 52 arranged in parallel within the heat sink 51. The heat sink 51 includes an upper heat sink base 511 and a lower heat sink base 512. The upper heat sink base 511 has an upper limit groove 5111 for arranging the battery units 52. The surface of the upper limit groove 5111 is in contact with the surface of the battery units 52. The lower heat sink base 512 also has a lower limit groove 5121 for arranging the battery units 52, and the surface of the lower limit groove 5121 is in contact with the surface of the battery units 52. The upper limit groove 5111 and the lower limit groove 5121 are metal grooves that match the size of the battery units 52, serving to fix the battery units 52. In this embodiment, the module unit 5 contains five battery units 52.

[0038] Reference Figure 4 and Figure 5 To improve the heat dissipation effect of the heat sink 51, the material of the heat sink 51 is set as ceramic material with a thermal conductivity greater than 10 W / m·K. In this embodiment, the heat sink 51 is an alumina ceramic material with a content greater than 90%.

[0039] Reference Figure 4 and Figure 5 At least one of the upper and lower surfaces of the heat sink 51 is provided with a ventilation structure 53; the ventilation structure 53 includes a plurality of ventilation grooves 531 arranged at intervals along the width direction and penetrating both ends of the heat sink 51.

[0040] Reference Figure 4 and Figure 5 The heat sink 51 has ventilation structures 53 on both its upper and lower surfaces. The ventilation groove 531 includes an upper groove 5311 on the top surface of the heat sink 51 and a lower groove 5312 on the bottom surface of the heat sink 51. In two adjacent module units 5, the lower groove 5312 of the upper module unit 5 and the upper groove 5311 of the lower module unit 5 are arranged correspondingly and connected to form a heat dissipation through hole 532. The ventilation groove 531 has a rectangular cross-section, which increases the contact area with air, allowing air to pass through the ventilation groove 531 more smoothly.

[0041] Reference Figure 3 The battery holder 2 includes a left holder 21 and a right holder 22. The left holder 21 has a left slot 211 for inserting the battery unit 52, and the right holder 22 has a right slot 221 for inserting the end of the battery unit 52. The left slot 211 and the right slot 221 are circular slots that match the size of the battery unit 52, so as to more securely fix the battery unit 52.

[0042] Reference Figure 3 and Figure 4A locking structure 23 for clamping the battery module 3 is provided between the left retainer 21 and the right retainer 22. The locking structure 23 includes a locking post 231 disposed inside the left retainer 21, a locking through hole 232 disposed in the right retainer 22 and corresponding to the locking post 231, and a locking screw 233 threadedly engaged with the locking post 231. An arrangement through hole 54 for the locking post 231 to pass through is also provided between adjacent heat sinks 51. The locking post 231 passes through the arrangement through hole 54 between adjacent heat sinks 51 and the locking through hole 232 of the right retainer 22. The locking screw 233 is threadedly engaged with the locking post 231 to achieve clamping and locking of the battery module 3 by the left retainer 21 and the right retainer 22, ensuring that the battery module 3 is stably installed in the battery retainer 2. In this embodiment, there are two locking posts 231.

[0043] Reference Figure 1 and Figure 6 The battery casing 1 is provided with an air inlet 11 and an air outlet 12, both of which communicate with the ventilation groove 531. The air inlet 11 is located at one end of the top surface of the battery casing 1, and the air outlet 12 is located on the side wall of the battery casing 1 away from the air inlet 11. The air inlet 11 consists of a plurality of ventilation holes arranged in a rectangular array, and the air outlet 12 consists of a plurality of ventilation holes spaced apart along the width direction of the battery casing 1. The positioning of the air inlet 11 and the air outlet 12 facilitates the efficient removal of heat generated by the battery through the ventilation groove 531 after air enters through the air inlet 11, and finally exhausts through the air outlet 12, thus effectively improving the heat dissipation of the battery pack.

[0044] The implementation principle of a heat-dissipating battery pack according to an embodiment of this application is as follows: A heat-dissipating battery pack includes a battery casing 1, a battery holder 2 installed in the battery casing 1, and a battery module 3 installed in the battery holder 2; the battery module 3 is composed of multiple stacked module units 5, and multiple parallel battery units 52 are installed in the heat dissipation frame 51 of the module unit 5, and the heat dissipation frame 51 is made of ceramic material, which effectively improves the heat dissipation effect of the battery pack.

[0045] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A battery pack that facilitates heat dissipation, characterized in that, It includes a battery casing (1), a battery holder (2) installed in the battery casing (1), and a battery module (3) installed in the battery holder (2); the battery module (3) has a module unit (5), the module unit (5) includes a heat sink (51) and a plurality of battery units (52) arranged in parallel within the heat sink (51); the heat sink (51) is made of ceramic material.

2. The battery pack with heat dissipation as described in claim 1, characterized in that, At least one of the upper and lower surfaces of the heat sink (51) is provided with a ventilation structure (53); the ventilation structure (53) includes a plurality of ventilation grooves (531) arranged at intervals along the width direction and passing through both ends of the heat sink (51); the battery casing (1) is provided with an air inlet (11) and an air outlet (12), and the air inlet (11) and the air outlet (12) are both connected to the ventilation grooves (531).

3. The battery pack with heat dissipation as described in claim 1, characterized in that, The heat sink (51) includes an upper heat sink (511) and a lower heat sink (512). The upper heat sink (511) has an upper limit groove (5111) for arranging the battery unit (52), and the lower heat sink (512) also has a lower limit groove (5121) for arranging the battery unit (52).

4. A battery pack with heat dissipation convenience according to claim 2, characterized in that, The surface of the heat sink (51) is provided with a ventilation structure (53), and the ventilation groove (531) includes an upper groove (5311) opened on the top surface of the heat sink (51) and a lower groove (5312) opened on the bottom surface of the heat sink (51); in two adjacent module units (5), the lower groove (5312) of the upper module unit (5) and the upper groove (5311) of the lower module unit (5) are arranged correspondingly and connected to form a heat dissipation through hole (532).

5. A battery pack for easy heat dissipation according to claim 1, characterized in that, The battery holder (2) includes a left holder (21) and a right holder (22). The left holder (21) has a left slot (211) for inserting the battery unit (52), and the right holder (22) has a right slot (221) for inserting the end of the battery unit (52). A locking structure (23) for clamping the battery module (3) is provided between the left holder (21) and the right holder (22).

6. A battery pack for easy heat dissipation according to claim 5, characterized in that, The locking structure (23) includes a locking post (231) disposed inside the left retainer (21), a locking through hole (232) disposed on the right retainer (22) and corresponding to the locking post (231), and a locking screw (233) threadedly engaged with the locking post (231); an arrangement through hole (54) for the locking post (231) to pass through is also provided between adjacent heat sinks (51).

7. A battery pack for easy heat dissipation according to claim 2, characterized in that, The air inlet (11) is located at one end of the top surface of the battery casing (1), and the air outlet (12) is located on the side wall of the battery casing (1) away from the air inlet (11).

8. A battery pack for easy heat dissipation according to claim 1, characterized in that, It also includes a battery control element (4) that is electrically connected to the battery module (3).

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