A lead-acid battery pack

Abstract

The utility model belongs to battery technical field discloses a kind of lead-acid battery package, lead-acid battery package includes shell, support, battery, temperature control piece and waterproof air-permeable piece, shell has installation cavity, installation cavity has air hole, support is fixed in installation cavity by connecting piece, multiple installation grooves are set on support, battery is multiple, and is installed in installation groove one by one, temperature control piece is installed on support, and for heating battery, waterproof air-permeable piece is installed in shell and seals air hole. The lead-acid battery package can heat battery, and waterproof and shock resistance is good, and service life is longer.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a lead-acid battery pack. Background Technology

[0002] Lead-acid batteries are widely used in electric vehicles, power systems, and other fields due to their mature technology and low cost. However, lead-acid batteries are quite sensitive to temperature, with their optimal operating temperature typically between 5°C and 35°C. Temperatures that are too low can reduce electrolyte activity, leading to insufficient charging; temperatures that are too high can cause electrolyte desiccation and thermal runaway, both of which reduce battery capacity and lifespan.

[0003] Meanwhile, in actual use, lead-acid batteries may also face situations such as vibration and water immersion. For example, lead-acid batteries installed in vehicles are affected by vibrations caused by road bumps as the vehicle moves, and there is also a risk of water contact when the vehicle is driven in rainy weather or through flooded areas. Vibration may loosen the internal structure of the battery, damage the electrode connections, affect battery performance, or even cause malfunctions; water immersion may cause problems such as corrosion of the battery casing and short circuits in the internal circuitry, severely shortening the battery's lifespan and even posing safety hazards. Utility Model Content

[0004] The purpose of this invention is to provide a lead-acid battery pack that can heat the battery, has good waterproof and shockproof performance, and a long service life.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] This utility model discloses a lead-acid battery pack, comprising: a housing having a mounting cavity with vent holes; a bracket fixed to the mounting cavity by a connector, the bracket having multiple mounting slots; multiple batteries, each installed in a corresponding mounting slot; a temperature control element mounted on the bracket and used to heat the batteries; and a waterproof and breathable element mounted on the housing and sealing the vent holes.

[0007] In some embodiments, the top wall of the housing is provided with two outlet holes, and the lead-acid battery pack further includes a sealing element installed in the outlet holes.

[0008] In some embodiments, the housing includes a top cover and a bottom cover, the top cover being detachably fastened to the bottom cover.

[0009] In some specific embodiments, one of the top cover and the bottom shell is provided with a snap-fit ​​part, the snap-fit ​​part is provided with a snap-fit ​​hole, and the other of the top cover and the bottom shell is provided with a snap-fit ​​protrusion, the snap-fit ​​protrusion being able to be inserted into the snap-fit ​​hole.

[0010] In some specific embodiments, there are multiple snap-fit ​​portions, which are respectively located on opposite sides of the top cover or the bottom shell, and there are multiple snap-fit ​​protrusions, which correspond one-to-one with the snap-fit ​​portions.

[0011] In some embodiments, the bracket is provided with a plurality of connecting posts, each connecting post having a connecting hole, and the housing is provided with a clearance hole, through which the connecting posts can pass, and the connector is installed in the connecting hole to fix the bracket inside the housing.

[0012] In some specific embodiments, the connector is a screw, and an elastic sleeve is fitted on the connecting post. One end of the elastic sleeve abuts against the outer wall of the housing, and the other end abuts against the head of the screw.

[0013] In some specific embodiments, a plurality of the connecting posts are distributed on both sides of the support along its width direction.

[0014] In some embodiments, a plurality of mounting grooves are formed on one side of the bracket, and a receiving groove is provided on the other side of the bracket, wherein the temperature control element is installed in the receiving groove.

[0015] In some specific embodiments, the bracket is also provided with a flow hole for connecting the mounting groove and the receiving groove.

[0016] The beneficial effects of this lead-acid battery pack are as follows: Since multiple batteries are installed in the mounting slots of the bracket, and the bracket is fixed in the mounting cavity by connectors, the dynamic stress generated by bumps during vehicle operation, road impacts, or vibrations during the transportation of energy storage equipment can dissipate and absorb external impact forces, reducing vibration damage to the batteries and internal components. The mounting cavity has vent holes, and waterproof venting components are installed in the shell and seal the vent holes. This allows for timely gas discharge in case of thermal runaway due to battery expansion, and also improves the waterproof performance of the lead-acid battery pack. Furthermore, the bracket is equipped with a temperature control component, which can be selectively activated during actual operation to control the battery temperature and prevent excessively high or low temperatures.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] Figure 1 This is an exploded structural diagram of the lead-acid battery pack according to an embodiment of the present invention;

[0019] Figure 2This is a schematic diagram of the top cover of the lead-acid battery pack according to an embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of the bottom shell of the lead-acid battery pack according to an embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of the structure of the bracket of the lead-acid battery pack according to an embodiment of the present invention;

[0022] Figure 5 This is a schematic diagram of the structure of the elastic sleeve of the lead-acid battery pack according to an embodiment of the present invention;

[0023] Figure 6 This is a schematic diagram of the waterproof and breathable component of the lead-acid battery pack according to an embodiment of this utility model.

[0024] Figure label:

[0025] 100. Housing; 110. Top cover; 111. Snap-fit ​​part; 1111. Snap-fit ​​hole; 120. Bottom shell; 121. Vent hole; 122. Snap protrusion; 123. Clearance hole;

[0026] 200, bracket; 210, mounting groove; 220, connecting post; 221, connecting hole; 230, receiving groove; 240, flow hole;

[0027] 300. Battery; 400. Connector; 500. Temperature control component; 600. Waterproof and breathable component;

[0028] 700, sealing element; 800, elastic sleeve. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0030] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] In the description of this embodiment, the terms "upper," "lower," "left," "right," "front," and "rear," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0032] This utility model discloses a lead-acid battery pack, see reference. Figure 1 As shown, the lead-acid battery pack includes a housing 100, a bracket 200, a battery 300, a temperature control component 500, and a waterproof and breathable component 600. The housing 100 has an installation cavity with a vent hole 121. The bracket 200 is fixed in the installation cavity by a connector 400. The bracket 200 is provided with multiple installation slots 210. There are multiple batteries 300, which are installed in the corresponding installation slots 210. The temperature control component 500 is installed on the bracket 200 and is used to heat the batteries 300. The waterproof and breathable component 600 is installed on the housing 100 and seals the vent hole 121. Understandably, since multiple batteries 300 are installed in the mounting slots 210 of the bracket 200, and the bracket 200 is fixed in the mounting cavity by the connector 400, the bumps during vehicle operation, road impacts, or vibrations during the transportation of energy storage equipment will generate dynamic stress on the lead-acid battery pack. The bracket 200, with its high strength and rigidity, can disperse and absorb external impact forces, reducing vibration damage to the batteries 300 and internal components. The mounting cavity has vent holes 121, and a waterproof venting component 600 is installed on the housing 100 and seals the vent holes 121. This allows for timely gas release when thermal runaway occurs due to battery expansion, and also improves the waterproof performance of the lead-acid battery pack. Since the bracket 200 is also equipped with a temperature control component 500, the selective activation of the temperature control component 500 during actual operation can control the temperature of the battery 300, preventing the battery 300 from becoming too hot or too cold.

[0033] Optionally, the bracket 200 is an aluminum bracket, which has advantages such as light weight, good thermal conductivity, and good shock resistance. Of course, in other embodiments of this utility model, the bracket 200 can also be made of other materials according to actual needs.

[0034] Optionally, the temperature control element 500 is a semiconductor cooling / heating element. Therefore, during actual operation, the battery 300 can be heated or cooled as needed, preventing the battery 300 from becoming too hot or too cold, thus helping to extend the lifespan of the lead-acid battery pack.

[0035] Optionally, the end of the battery 300 facing away from the bracket 200 has a gap with the top wall of the housing 100. This prevents the expanding battery 300 from exerting excessive force on the housing 100, thus avoiding damage to the housing 100.

[0036] Optional, see reference Figure 2 As shown, the top wall of the housing 100 has two outlet holes. The lead-acid battery pack also includes a sealing element 700, which is installed in the outlet holes. It is understood that the two outlet holes are the positive and negative outlet holes, respectively, facilitating wire exit. The added sealing element 700 ensures the sealing of the connection between the lead wire and the housing 100, improving the waterproof performance of the lead-acid battery pack. It also ensures insulation between the lead wire and the housing 100, preventing the housing 100 from becoming electrified. Optionally, the sealing element 700 is a rubber component and is bonded to the housing 100. Of course, in other embodiments of this invention, the sealing element 700 can be made of other insulating materials as needed.

[0037] Optional, see reference Figure 1 As shown, the housing 100 includes a top cover 110 and a bottom cover 120, with the top cover 110 detachably fastened to the bottom cover 120. It is understood that designing the housing 100 with two detachable structures, the top cover 110 and the bottom cover 120, facilitates assembly, improving the assembly efficiency of the lead-acid battery pack, and also facilitates the repair or replacement of the battery 300. Further optionally, to improve the waterproof performance of the housing 100, a sealing ring or sealant is provided between the top cover 110 and the bottom cover 120 for a sealed connection.

[0038] Further optional, see reference Figures 2-3 As shown, the top cover 110 is provided with a snap-fit ​​part 111, and the snap-fit ​​part 111 has a snap-fit ​​hole 1111. The bottom shell 120 is provided with a snap-fit ​​protrusion 122, which can be inserted into the snap-fit ​​hole 1111. It can be understood that in actual installation, the top cover 110 only needs to be snapped onto the bottom shell 120, so that the snap-fit ​​protrusion 122 engages with the snap-fit ​​hole 1111 to complete the connection between the top cover 110 and the bottom shell 120. Installation is relatively convenient, and the connection strength is good. Further optionally, the snap-fit ​​protrusion 122 includes a first part and a second part. The first part is a cylinder, and the second part is a hemisphere, with the radius of the hemisphere being larger than the diameter of the cylinder. This improves the snap-fit ​​stability between the top cover 110 and the bottom shell 120.

[0039] Alternatively, multiple latching portions 111 may be provided on opposite sides of the top cover 110, and multiple latching protrusions 122 may be provided corresponding to each latching portion 111. It is understood that the cooperation of multiple sets of latching protrusions 122 and latching holes 1111 can improve the connection stability between the top cover 110 and the bottom shell 120, thereby improving the reliability of the entire lead-acid battery pack.

[0040] It should be noted that, in an alternative embodiment, the bottom shell 120 is provided with a snap-fit ​​portion 111, which has a snap-fit ​​hole 1111, and the top cover 110 is provided with a snap-fit ​​protrusion 122, which can be inserted into the snap-fit ​​hole 1111. Of course, in other embodiments of this utility model, the top cover 110 and the bottom shell 120 can also be connected by other connection methods such as welding, sealant bonding, and screw connection, and are not limited to the snap-fit ​​connection method of the snap-fit ​​protrusion 122 and the snap-fit ​​hole 1111.

[0041] Optional, see reference Figures 3-4 As shown, the bracket 200 is provided with multiple connecting posts 220, and the connecting posts 220 are provided with connecting holes 221. The bottom shell 120 of the housing 100 is provided with clearance holes 123. The connecting posts 220 can pass through the clearance holes 123. The connector 400 is installed in the connecting holes 221 to fix the bracket 200 inside the housing 100. It can be understood that in the actual assembly process, after the bracket 200 is placed into the bottom shell 120, the connecting posts 220 are passed through the clearance holes 123, and then the connector 400 is used to fix the bracket 200 inside the bottom shell 120. This connection structure is relatively convenient to operate, facilitates the assembly of lead-acid battery packs, and can also improve the connection stability of the bracket 200 inside the housing 100, thereby improving the shock resistance of the lead-acid battery 300.

[0042] Optional, see reference Figure 1 and Figure 5 As shown, the connector 400 is a screw, and an elastic sleeve 800 is fitted onto the connecting post 220. One end of the elastic sleeve 800 abuts against the outer wall of the housing 100, and the other end abuts against the head of the screw. It can be understood that the added elastic sleeve 800 can clamp and fix the bracket 200 to the bottom shell 120. Simultaneously, when the housing 100 is subjected to high-frequency vibration, the elastic sleeve 800 dissipates vibration energy through repeated compression and rebound deformation, thereby improving the shock resistance of the lead-acid battery 300. Further optionally, the elastic sleeve 800 is a rubber ring. Of course, in other embodiments of this utility model, the elastic sleeve 800 can also be made of other elastic materials according to actual needs.

[0043] Optionally, multiple connecting posts 220 are distributed on both sides of the bracket 200 along its width direction. It can be understood that by setting connecting posts 220 on both sides of the bracket 200 along its width direction, the connecting posts 220 are fixed on both sides along its width direction during actual assembly, which helps to improve the connection stability between the bracket 200 and the bottom shell 120, thereby improving the shock resistance of the lead-acid battery 300.

[0044] Optional, see reference Figure 1 and Figure 4 As shown, a plurality of mounting slots 210 are formed on one side of the bracket 200, and a receiving slot 230 is provided on the other side of the bracket 200, in which the temperature control component 500 is installed. It can be understood that installing the temperature control component 500 in the receiving slot 230 serves two purposes: firstly, it prevents the battery 300 from directly compressing the temperature control component 500, thus extending its service life; secondly, it improves the installation stability of the temperature control component 500, ensuring that it can stably heat or cool the battery 300.

[0045] Optional, see reference Figure 4 As shown, the bracket 200 is also provided with a flow hole 240 for connecting the mounting groove 210 and the receiving groove 230. It can be understood that, since the battery 300 and the temperature control element 500 are located on the first and second sides of the bracket 200 respectively, the flow hole 240 can improve the heating / cooling effect of the temperature control element 500 on the battery 300, ensuring temperature control of the battery 300 and keeping it in a suitable temperature environment, which helps extend the service life of the lead-acid battery pack.

[0046] Optional, see reference Figure 6 As shown, the waterproof and breathable component 600 is a circular patch that is adhered to the bottom shell 120. This facilitates the connection between the waterproof and breathable component 600 and the bottom shell 120, and also improves the sealing performance of the connection between the waterproof and breathable component 600 and the bottom shell 120, thereby enhancing the waterproof performance of the entire lead-acid battery pack.

[0047] Optionally, the waterproof and breathable component 600 can be made of polymer material according to actual needs, which can achieve both breathability and waterproof function.

[0048] In the description of this specification, references to terms such as "some embodiments," "other embodiments," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0049] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A lead-acid battery pack, characterized in that, include: The housing (100) has a mounting cavity having a vent (121); A bracket (200) is fixed in the mounting cavity by a connector (400), and a plurality of mounting slots (210) are provided on the bracket (200); A battery (300), wherein there are multiple batteries (300), and each battery is installed in a corresponding position in the mounting slot (210); A temperature control element (500) is mounted on the bracket (200) and is used to heat the battery (300); A waterproof and breathable component (600) is installed on the housing (100) and seals the vent (121).

2. The lead-acid battery pack according to claim 1, characterized in that, The top wall of the housing (100) is provided with two outlet holes, and the lead-acid battery pack also includes a sealing element (700), which is installed in the outlet holes.

3. The lead-acid battery pack according to claim 1, characterized in that, The housing (100) includes a top cover (110) and a bottom cover (120), the top cover (110) being detachably fastened to the bottom cover (120).

4. The lead-acid battery pack according to claim 3, characterized in that, One of the top cover (110) and the bottom shell (120) is provided with a snap-fit ​​part (111), and the snap-fit ​​part (111) is provided with a snap-fit ​​hole (1111). The other of the top cover (110) and the bottom shell (120) is provided with a snap-fit ​​protrusion (122), and the snap-fit ​​protrusion (122) can be inserted into the snap-fit ​​hole (1111).

5. The lead-acid battery pack according to claim 4, characterized in that, The snap-fit ​​portion (111) is multiple and is respectively provided on both sides of the top cover (110) or the bottom shell (120) that are opposite to each other. The snap-fit ​​protrusion (122) is multiple and is provided in one-to-one correspondence with the snap-fit ​​portion (111).

6. The lead-acid battery pack according to claim 1, characterized in that, The bracket (200) is provided with a plurality of connecting posts (220), and the connecting posts (220) are provided with connecting holes (221). The housing (100) is provided with clearance holes (123). The connecting posts (220) can pass through the clearance holes (123). The connector (400) is installed in the connecting holes (221) to fix the bracket (200) inside the housing (100).

7. The lead-acid battery pack according to claim 6, characterized in that, The connector (400) is a screw, and an elastic sleeve (800) is fitted on the connecting post (220). One end of the elastic sleeve (800) abuts against the outer side wall of the housing (100), and the other end abuts against the head of the screw.

8. The lead-acid battery pack according to claim 6, characterized in that, Multiple connecting posts (220) are distributed on both sides of the support (200) along its width direction.

9. The lead-acid battery pack according to claim 1, characterized in that, The bracket (200) has a plurality of mounting grooves (210) on one side and a receiving groove (230) on the other side, and the temperature control element (500) is installed in the receiving groove (230).

10. The lead-acid battery pack according to claim 9, characterized in that, The bracket (200) is also provided with a flow hole (240) for connecting the mounting groove (210) and the receiving groove (230).

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