energy storage power supply

Abstract

The utility model discloses a kind of energy storage power supplies, including outer shell, outer shell includes lower shell and cover plate, lower shell hollowly forms and is provided with the accommodating cavity of one side opening, cover plate is detachably covered in the top of lower shell, for plugging opening;First sealing ring, first sealing ring is set between the top of lower shell and the lower end surface of cover plate;Power module, power module is built into accommodating cavity;Discharge terminal, the side wall of lower shell is through with the first mounting hole being communicated with accommodating cavity, discharge terminal is set in first mounting hole and is electrically connected with power module;Second sealing ring is set between discharge terminal and the cavity wall of accommodating cavity. By the first sealing ring closely adhering lower shell and cover plate, by the second sealing ring closely adhering between discharge terminal and the cavity wall of accommodating cavity, effective waterproof barrier is formed, so as to protect power module, place external water infiltration into the inside of accommodating cavity.

Description

Technical Field

[0001] This utility model relates to the technical field of lithium batteries, and in particular to an energy storage power source. Background Technology

[0002] Some energy storage power supplies consist of lithium batteries, battery casings, conductive connectors, and BMS, etc. The inside of the lithium battery must not come into contact with water during use.

[0003] However, existing lithium batteries have the following drawbacks, such as gaps between the top and bottom covers when they are closed and insufficient sealing of the charging connector, which can easily lead to water seeping into the battery. In addition, water contact with the BMS can cause a short circuit. Furthermore, the battery cell casing and conductive connecting pieces are made of metal, which is prone to rusting when exposed to water, resulting in a decrease in overall battery performance and potential safety risks. Utility Model Content

[0004] In order to overcome the shortcomings of existing technical solutions, this utility model provides an energy storage power supply.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] An energy storage power source, the energy storage power source comprising:

[0007] The outer shell includes a lower shell and a cover plate. The lower shell is hollow and has an accommodating cavity with an opening on one side. The cover plate is detachably placed on the top of the lower shell to block the opening.

[0008] A first sealing ring is disposed between the top of the lower shell and the lower end face of the cover plate;

[0009] A power module, wherein the power module is built into the accommodating cavity;

[0010] The discharge terminal has a first mounting hole through the side wall of the lower shell that communicates with the accommodating cavity. The discharge terminal is disposed in the first mounting hole and is electrically connected to the power module. A second sealing ring is disposed between the discharge terminal and the cavity wall of the accommodating cavity.

[0011] As a preferred technical solution of this utility model, the top of the lower shell is recessed with a groove, the first sealing ring is disposed in the groove, and the lower end face of the cover plate is provided with a protrusion for pressing the first sealing ring; or, the lower end face of the cover plate is recessed with a groove, and the top of the lower shell is provided with a protrusion for pressing the first sealing ring.

[0012] As a preferred technical solution of this utility model, the first sealing ring is ring-shaped, the groove is an annular groove, and the protrusion is ring-shaped.

[0013] As a preferred technical solution of this utility model, the side wall of the lower shell has a second mounting hole that communicates with the accommodating cavity, and a vent valve is provided in the second mounting hole.

[0014] As a preferred technical solution of this utility model, a third sealing ring is provided between the vent valve and the wall of the second mounting hole.

[0015] As a preferred technical solution of this utility model, thermally conductive silicone is provided on the outer circumferential side and bottom of the power module.

[0016] As a preferred technical solution of this utility model, the top of the lower shell is recessed with a fixing hole, and the cover plate has a locking hole that corresponds to and communicates with the fixing hole.

[0017] The energy storage power supply also includes a locking component, which is detachably disposed in both the locking hole and the fixing hole to fix the cover plate.

[0018] As a preferred technical solution of this utility model, the first sealing ring has a through hole, and the two ends of the through hole are respectively connected to the fixing hole and the locking hole.

[0019] As a preferred technical solution of this utility model, a mounting part is provided on the outer side or bottom of the lower shell, and the mounting part is used to be detachably assembled to the mounting body.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] The first sealing ring tightly fits the lower shell and the cover plate, and the second sealing ring tightly fits the discharge terminal and the cavity wall of the accommodating cavity, forming an effective waterproof barrier to protect the power module and prevent external water from seeping into the interior of the accommodating cavity. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a structural diagram of an embodiment of the present utility model.

[0024] Figure 2 This is an exploded view of the structure of an embodiment of this utility model.

[0025] Figure 3 This is an exploded view of the structure of an embodiment of this utility model.

[0026] Figure 4 This is a structural diagram of the lower shell and power module of this utility model embodiment.

[0027] Numbers in the diagram

[0028] 1. Outer shell; 11. Lower shell; 111. Receiving cavity; 112. First mounting hole; 113. Second mounting hole; 114. Fixing hole; 115. Mounting part; 12. Cover plate; 121. Locking hole;

[0029] 2. First sealing ring; 21. Avoid the hole;

[0030] 3. Power supply module;

[0031] 4. Discharge terminal;

[0032] 5. Second sealing ring;

[0033] 6. Vent valve;

[0034] 7. Third sealing ring;

[0035] 8. Locking components. Detailed Implementation

[0036] To make the technical problems, technical solutions and beneficial effects to be solved by this application clearer, the following describes this application in further detail with reference to the accompanying drawings and embodiments.

[0037] It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0038] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly on the other component or indirectly on that other component.

[0039] When a component is said to be "connected to" another component, it can be directly connected to the other component or indirectly connected to that other component.

[0040] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, 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 application.

[0041] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature.

[0042] In the description of this application, "multiple" means two or more, unless otherwise expressly and specifically defined.

[0043] To address the technical problems of existing energy storage power supplies, such as insufficient sealing, which allows water to seep into the battery and cause short circuits in the internal BMS upon contact with water, thus posing safety risks, this utility model provides an energy storage power supply.

[0044] The following describes in detail the specific structure of an energy storage power supply provided by an embodiment of this utility model, according to the appendix. Figure 1-4 As shown, the specific structure of the energy storage power supply includes an outer casing 1, a first sealing ring 2, a power module 3, and a discharge terminal 4.

[0045] The outer shell 1 includes a lower shell 11 and a cover plate 12. The lower shell 11 is hollow and has an accommodating cavity 111 with an opening on one side. The cover plate 12 is detachably placed on the top of the lower shell 11 to block the opening.

[0046] Specifically, the hollow cavity 111 formed inside the lower shell 11 is used to accommodate the battery module, ensuring that the battery module can be securely built into the cavity 111, providing a supporting framework for the internal structure of the battery module. In addition, the lower shell 11 can provide a certain degree of protection for the battery module inside the cavity 111, such as preventing it from being damaged by external physical impacts or collisions, and also isolating it from external factors such as dust and moisture that may affect the performance of the battery module. Since the cover plate 12 is detachably installed on the top of the lower shell 11, it can block the opening of the cavity 111, making the cavity 111 a relatively closed space, further protecting the battery module from the influence of the external environment, and also preventing the battery module from being accidentally exposed during use, thus improving safety.

[0047] In the foregoing embodiments, it should be noted that since the cover plate 12 is detachable, it facilitates the inspection, maintenance, and replacement of the battery module. For example, when the battery module malfunctions or needs to be replaced, the internal power module 3 can be replaced by removing it from the top of the lower shell 11 through the cover plate 12 without damaging the entire outer shell 1, thereby reducing maintenance costs and difficulty.

[0048] according to Figure 2As shown, the first sealing ring 2 is disposed between the top of the lower shell 11 and the lower end face of the cover plate 12.

[0049] Specifically, in the use of the energy storage power supply of this utility model embodiment, if external moisture enters the battery, it may cause problems such as short circuit and corrosion of the electrodes, affecting the performance and service life of the battery, and may even cause safety accidents. Therefore, the first sealing ring 2 can effectively prevent moisture and humidity from entering the accommodating cavity 111. That is, the first sealing ring 2 forms an effective waterproof barrier by tightly fitting the lower shell 11 and the cover plate 12, thereby protecting the precision structure and chemical substances inside the power module 3 from moisture damage. In addition to waterproofing, the first sealing ring 2 can also prevent dust, impurities and other small particles from entering the accommodating cavity 111.

[0050] In addition, when the entire energy storage power supply is subjected to external forces such as vibration and impact, the first sealing ring 2 can play a certain role in buffering and shock absorption, and can absorb some of the external forces. Therefore, it can reduce the direct collision and friction between the lower shell 11 and the cover plate 12, avoid the loosening and damage of components caused by vibration, and thus protect the internal power module 3.

[0051] It is understood that the first sealing ring 2 in this embodiment of the present invention is made of silicone. Since silicone has excellent elasticity and flexibility, it can form a tight seal between the lower shell 11 and the cover plate 12. It can adapt to different surface shapes and dimensional tolerances, thereby effectively filling gaps and preventing substances such as air, moisture and dust from easily entering the accommodating cavity 111. When the cover plate 12 is installed on the top of the lower shell 11, the cover plate 12 is used to squeeze the first sealing ring 2, causing it to deform. The elasticity of the first sealing ring 2 allows it to adapt to the unevenness of the surfaces between the lower shell 11 and the cover plate 12, filling the tiny gaps between them.

[0052] according to Figure 2 and Figure 3 As shown, the side wall of the lower shell 11 has a first mounting hole 112 that communicates with the accommodating cavity 111. The discharge terminal 4 is disposed in the first mounting hole 112 and is electrically connected to the power module 3. A second sealing ring 5 is disposed between the discharge terminal 4 and the cavity wall of the accommodating cavity 111.

[0053] Specifically, the first mounting hole 112 is used to position and install the discharge terminal 4, enabling it to electrically connect with the power module 3 located within the accommodating cavity 111. This allows the electrical energy generated by the power module 3 to be transmitted to external devices via the discharge terminal 4, thus enabling the lithium battery to power other devices. The second sealing ring 5, located between the discharge terminal 4 and the cavity wall of the accommodating cavity 111, serves a sealing function. Specifically, the second sealing ring 5 is made of an elastic material. During installation, it deforms under pressure from the discharge terminal 4 and the wall of the second mounting hole 113. Due to its elasticity, as it recovers, the second sealing ring 5 tightly adheres to the outer side of the discharge terminal 4 and the wall of the second mounting hole 113, filling the tiny gap between them. This prevents external air, moisture, dust, and other substances from entering the accommodating cavity 111, avoiding damage to the power module 3. It also prevents leakage of internal chemical substances, ensuring the safety and stability of the battery.

[0054] The first sealing ring 2 has the following two configuration methods:

[0055] 1. The top of the lower shell 11 is recessed with a groove, the first sealing ring 2 is disposed in the groove, and the lower end face of the cover plate 12 is provided with a protrusion for pressing the sealing ring; 2. The lower end face of the cover plate 12 is recessed with a groove, and the top of the lower shell 11 is provided with a protrusion for pressing the sealing ring.

[0056] Taking the first setting method as an example, specifically, the groove on the top of the lower shell 11 is used to assemble the first sealing ring 2, so as to accurately position and install it. That is, placing the first sealing ring 2 in the groove can ensure its accurate position. When installing the cover plate 12, it is convenient for the cover plate 12 to accurately correspond with the protrusion on the cover plate 12. At the same time, it can prevent the first sealing ring 2 from shifting or rolling during the installation process, thereby facilitating the installation operation of the first sealing ring 2.

[0057] When the protrusion on the lower end face of the cover plate 12 is installed, pressure can be applied to the first sealing ring 2 placed in the groove. Since the first sealing ring 2 is made of silicone, it will undergo elastic deformation when squeezed by the protrusion. The elasticity of the first sealing ring 2 allows it to adapt to the surface shape of the groove and the protrusion, filling the tiny gap between them, thereby producing a tight sealing effect. In this way, it can effectively prevent external air, moisture, dust and other substances from entering the accommodating cavity 111, and at the same time prevent the leakage of internal chemical substances of the power module 3, thereby ensuring the overall performance stability and safety.

[0058] In addition, the groove can also concentrate the deformation of the first sealing ring 2 in the area in contact with the convex when it is squeezed, thereby improving the uniformity of the sealing pressure distribution between the first sealing ring 2 and the convex. Moreover, the groove can also limit the deformation range of the first sealing ring 2, so that it can better perform its sealing function within the elastic limit, further enhancing the sealing effect.

[0059] The two settings for the first sealing ring 2 can be set according to the actual situation, and are not limited here.

[0060] according to Figure 2 As shown, in a further embodiment, the groove is an annular groove and the protrusion is ring-shaped.

[0061] Specifically, the annular grooves and protrusions uniformly compress the first sealing ring 2 along the entire circumference of the power module 3, ensuring consistent deformation of all parts of the first sealing ring 2 under pressure. This creates uniform sealing pressure across the entire circumference, effectively preventing leakage due to insufficient local pressure and ensuring the sealing performance of the power module 3. Furthermore, the annular grooves and protrusions surround the top edge of the power module 3, forming a continuous sealing barrier. From both above and sides, external air, moisture, dust, and other contaminants are difficult to enter the accommodating cavity 111, providing more comprehensive protection and preventing damage to the internal power module 3 from external environmental factors.

[0062] according to Figure 3 As shown, in some specific embodiments, the side wall of the lower shell 11 has a second mounting hole 113 that communicates with the accommodating cavity 111, and a vent valve 6 is provided in the second mounting hole 113.

[0063] Specifically, during the charging and discharging process, the power module 3 generates heat and gas due to internal chemical reactions, causing the internal pressure to gradually increase. To address this, a vent valve 6 is installed in the second mounting hole 113, which is connected to the accommodating cavity 111. This vent valve has a specific rated pressure value. When the pressure exceeds the rated value of the vent valve 6, it can sense the pressure change and open to provide a discharge channel for the gas in the accommodating cavity 111. Under the action of the pressure difference, the gas is discharged from the inside of the battery box to the external environment through the vent valve 6. This effectively reduces the pressure in the accommodating cavity 111, restoring it to a safe range and preventing the casing from deforming or cracking due to excessive pressure, or even causing a safety accident.

[0064] It should be noted that, based on the principle of pressure difference, when the pressure inside the accommodating cavity 111 is greater than the sum of the external pressure and the opening pressure of the vent valve 6, the vent valve 6 is subjected to an inward pressure difference, thereby triggering the opening mechanism.

[0065] according to Figure 3 As shown, in a further embodiment, a third sealing ring 7 is provided between the vent valve 6 and the wall of the second mounting hole 113.

[0066] Specifically, the third sealing ring 7 is used to fill the gap between the vent valve 6 and the wall of the second mounting hole 113, ensuring that when the vent valve 6 is working normally and when the pressure inside the accommodating cavity 111 changes, the gas can only be discharged through the channel of the vent valve 6, and cannot leak from the gap between the vent valve 6 and the hole wall.

[0067] Furthermore, since the third sealing ring 7 is made of silicone, it can exert a certain clamping force on the vent valve 6 after it is installed in the second mounting hole 113, making it more stable. This prevents the vent valve 6 from loosening or shifting when subjected to vibration, impact or other external forces, ensuring that the vent valve 6 is always in the correct installation position so as to perform its pressure control and gas discharge functions normally.

[0068] In some specific embodiments, thermally conductive silicone is provided on the outer circumferential side and bottom of the power module 3.

[0069] Specifically, since thermally conductive silicone has good thermal conductivity, it can quickly transfer the heat generated by the power module 3. Specifically, when the power module 3 generates a lot of heat during charging and discharging, if it is not dissipated in time, it is easy for the temperature of the power module 3 to rise. Therefore, the thermally conductive silicone is used to conduct heat from the power module 3 to the heat dissipation component or the cavity wall of the accommodating cavity 111 that is in contact with it, thereby increasing the efficiency of heat transfer and helping to dissipate heat from the power module 3.

[0070] according to Figure 2 As shown, in some specific embodiments, the top of the lower shell 11 is recessed with a fixing hole 114, and the cover plate 12 has a locking hole 121 that is correspondingly connected to the fixing hole 114; the energy storage power supply also includes a locking member 8, which is detachably disposed in both the locking hole 121 and the fixing hole 114 to fix the cover plate 12.

[0071] Specifically, to improve the sealing of the accommodating cavity 111 and the ease of disassembly and assembly of the cover plate 12, when assembling the cover plate 12, it is only necessary to connect the fixing hole 114 on the lower shell 11 with the locking hole 121 on the cover plate 12, and then insert the locking member 8 into both the locking hole 121 and the fixing hole 114. This makes the connection between the lower shell 11 and the cover plate 12 tighter, so that the cover plate 12 seals the opening of the lower shell 11. This design improves the ease of assembly of the cover plate 12 and the lower shell 11 and prevents external moisture from directly leaking into the interior of the accommodating cavity 111. Conversely, when disassembling the cover plate 12, it is only necessary to disengage the locking member 8 from the fixing hole 114 and the locking hole 121, and then the cover plate 12 can be removed.

[0072] It is understood that the fixing hole 114 in this embodiment of the present invention is a screw hole, and correspondingly, the locking member 8 is a bolt or screw.

[0073] according to Figure 2 As shown, in a further embodiment, the first sealing ring 2 has a through hole 21, and the two ends of the through hole 21 are respectively connected to the fixing hole 114 and the locking hole 121.

[0074] Specifically, the avoidance hole 21 is used to provide a certain installation space for the locking member 8. For example, when the cover plate 12 is fixed to the lower shell 11 by the locking member 8, the locking member 8 needs to pass through the locking hole 121 of the cover plate 12 and the fixing hole 114 of the lower shell 11. Therefore, the avoidance hole 21 ensures that the first sealing ring 2 will not obstruct the installation of the locking member 8, so that the locking member 8 can pass smoothly into the fixing hole 114.

[0075] according to Figures 1-3 As shown, in some specific embodiments, a mounting portion 115 is provided on the outer side or bottom of the lower shell 11, and the mounting portion 115 is used to be detachably assembled onto various mounting bodies.

[0076] Specifically, the mounting part 115 serves as a connecting bridge between the lower housing 11 and various mounting bodies. For example, the mounting part 115 can be a protruding stud, a recessed slot, or a threaded hole. In this way, the mounting part 115 can be fixedly assembled to different mounting bodies, thereby enabling the lower housing 11 to be assembled to the mounting body.

[0077] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. An energy storage power source, characterized in that, The energy storage power source includes: The outer shell includes a lower shell and a cover plate. The lower shell is hollow and has an accommodating cavity with an opening on one side. The cover plate is detachably placed on the top of the lower shell to block the opening. A first sealing ring is disposed between the top of the lower shell and the lower end face of the cover plate; A power module, wherein the power module is built into the accommodating cavity; The discharge terminal has a first mounting hole through the side wall of the lower shell that communicates with the accommodating cavity. The discharge terminal is disposed in the first mounting hole and is electrically connected to the power module. A second sealing ring is disposed between the discharge terminal and the cavity wall of the accommodating cavity. The top of the lower shell is recessed with a groove, and the first sealing ring is disposed in the groove. The lower end face of the cover plate is provided with a protrusion for pressing the first sealing ring; or, the lower end face of the cover plate is recessed with a groove, and the top of the lower shell is provided with a protrusion for pressing the first sealing ring. The side wall of the lower shell has a second mounting hole that communicates with the accommodating cavity, and a vent valve is provided in the second mounting hole. The top of the lower shell is recessed with a fixing hole, and the cover plate has a locking hole that corresponds to and communicates with the fixing hole. The energy storage power supply also includes a locking component, which is detachably disposed in both the locking hole and the fixing hole to fix the cover plate. The first sealing ring has a through hole, and the two ends of the through hole are respectively connected to the fixing hole and the locking hole.

2. The energy storage power supply according to claim 1, characterized in that, The first sealing ring is ring-shaped, the groove is an annular groove, and the protrusion is ring-shaped.

3. The energy storage power supply according to claim 1, characterized in that, A third sealing ring is provided between the vent valve and the wall of the second mounting hole.

4. The energy storage power supply according to claim 1, characterized in that, Thermally conductive silicone is provided on the outer circumferential side and bottom of the power module.

5. The energy storage power supply according to claim 1, characterized in that, The lower shell has a mounting part on its outer side or bottom, which is used to detachably assemble into the mounting body.

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