Battery charging and discharging protection device in movable energy storage system

Abstract

The utility model relates to the technical field of battery charging and discharging protection devices, and discloses a battery charging and discharging protection device in a movable energy storage system, which comprises a battery shell, a battery cluster total positive electrode is arranged on the edge of the right side of the battery shell, and a battery cluster total negative electrode is arranged on one side of the battery cluster total positive electrode. According to the battery charging and discharging protection device in the movable energy storage system, through the arrangement of the protection mechanism, when the battery charging and discharging protection device is used, the total positive loop and the total negative loop of a battery cluster are each provided with a relay, it is ensured that the electrified loop of the battery cluster can be safely and rapidly cut off during charging or discharging under the emergency cut-off instruction of a BMS module, and the safety of the battery cluster is ensured; the circuit breaker can be directly and manually switched off in emergency and later maintenance, so that the circuit breaker plays a role in switching on and off a loop, and has relatively good simplicity, convenience and safety; the quick fuse can ensure that the ground loop is quickly cut off when the battery cluster loop is short-circuited or has large current, so that the safety of the battery cluster is ensured.

Description

Technical Field

[0001] This utility model relates to the technical field of battery charging and discharging protection devices, and in particular to a battery charging and discharging protection device in a portable energy storage system. Background Technology

[0002] With the accelerated global energy transition and the widespread application of distributed energy resources, mobile energy storage systems, as a flexible and convenient energy storage and supply solution, are gradually becoming a research hotspot and market favorite in the energy sector. Mobile energy storage systems can be rapidly deployed in various scenarios, providing reliable power support for emergency power supply, power security in remote areas, and mobile charging for electric vehicles, effectively solving the problems of insufficient coverage and poor flexibility in traditional power grids. Their applications cover multiple fields including industry, commerce, and residential use, and are of great significance for improving energy efficiency and enhancing the stability and reliability of energy supply.

[0003] In portable energy storage systems, the battery, as the core energy storage component, directly determines the overall system's operational efficiency and economic benefits through its performance and lifespan. However, batteries face numerous complex and severe problems during charging and discharging. From a charging perspective, overcharging is a particularly prominent hidden danger. When a battery reaches full charge, if the charging circuit fails to disconnect it in time, continued charging will lead to increased internal pressure and a rapid rise in temperature, potentially causing serious consequences such as electrolyte decomposition and electrode material damage, and even resulting in battery fires or explosions. Therefore, a battery charging and discharging protection device for portable energy storage systems is proposed. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] The purpose of this invention is to provide a battery charging and discharging protection device in a portable energy storage system, which solves the many complex and serious problems faced by batteries during charging and discharging as mentioned in the background art. From the charging perspective, overcharging is a particularly prominent hidden danger. When the battery reaches full charge, if the charging circuit fails to cut off the charge in time, continued charging will lead to an increase in internal pressure and temperature, which may cause serious consequences such as electrolyte decomposition and electrode material structure damage, and even battery fires and explosions.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a battery charging and discharging protection device in a portable energy storage system, comprising a battery casing, a battery cluster positive terminal mounted on the right edge of the battery casing, a battery cluster negative terminal mounted on one side of the battery cluster positive terminal, a protection mechanism provided on one side of the battery cluster positive and negative terminals, a dustproof mechanism threadedly connected to the right side of the battery casing, the protection mechanism comprising a relay disposed on one side of the battery cluster positive and negative terminals, one side of the relay electrically connected to a BMS module via a power line, the other side of the relay electrically connected to a circuit breaker via a power line, and one side of the circuit breaker electrically connected to a fast-acting fuse via a power line; the dustproof mechanism comprising a dust cover threadedly connected to the right side of the battery casing, the surface of the dust cover having several heat dissipation vents.

[0008] As a further embodiment of this utility model, the surface of the dust cover is provided with four threaded holes, and the internal threads of the threaded holes are connected to threaded posts. The dust cover serves to prevent dust.

[0009] As a further embodiment of this utility model, a placement groove is provided at the middle of the right side of the battery casing, and the BMS module is threaded into the inside of the placement groove. The placement groove serves to install the BMS module.

[0010] As a further embodiment of this utility model, a sealing cover is threadedly connected to the top of the battery casing. The relay, circuit breaker, and fast-acting fuse are all installed inside the battery casing. The sealing cover serves to seal the battery casing.

[0011] As a further embodiment of this utility model, two heat dissipation holes are provided on the left side of the battery casing, and a cooling fan is installed inside the heat dissipation hole. The cooling fan serves to dissipate heat.

[0012] As a further embodiment of this utility model, a dustproof mesh is installed on the surface of the cooling fan. The dustproof mesh is made of metal and serves to block dust.

[0013] As a further embodiment of this utility model, two extension blocks are fixedly connected to the lower surface of the battery casing. Each extension block has two positioning holes on its surface. The positioning holes serve to fix the battery casing.

[0014] (III) Beneficial Effects

[0015] This utility model provides a battery charging and discharging protection device in a portable energy storage system, which has the following beneficial effects:

[0016] 1. The battery charging and discharging protection device in this portable energy storage system, through the setting of the protection mechanism, is equipped with a relay in both the positive and negative circuits of the battery cluster during use. This ensures that under the emergency cut-off command of the BMS module, the live circuit of the battery cluster can be safely and quickly cut off during charging or discharging, ensuring the safety of the battery cluster. The circuit breaker can be manually disconnected directly in emergency situations and during later maintenance, serving as a switch circuit with good simplicity and safety. The fast-acting fuse ensures that the ground circuit is quickly cut off in the event of a short circuit or high current in the battery cluster circuit, ensuring the safety of the battery cluster.

[0017] 2. The battery charging and discharging protection device in this portable energy storage system has a dustproof mechanism. During use, since the BMS module is installed on the outside of the battery casing, it is easily affected by the external environment, causing dust to adhere to the surface of the BMS module. Therefore, a dustproof cover is installed on the surface of the BMS module to prevent dust from adhering to the BMS module and to avoid excessive dust accumulation, which would shorten the service life of the equipment. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the dustproof mechanism of this utility model;

[0020] Figure 3 This is a schematic diagram of the protective mechanism structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the cooling fan structure of this utility model.

[0022] In the diagram: 1. Battery casing; 2. Battery cluster positive; 3. Battery cluster negative; 4. Protection mechanism; 401. Relay; 402. BMS module; 403. Circuit breaker; 404. Fast-acting fuse; 5. Dustproof mechanism; 501. Dust cover; 502. Heat sink; 6. Sealing cover; 7. Cooling fan; 8. Dustproof mesh; 9. Extension block; 10. Threaded post. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0024] Please see Figures 1 to 4This utility model provides a technical solution: a battery charging and discharging protection device in a portable energy storage system, including a battery casing 1, a battery cluster positive 2 installed on the right edge of the battery casing 1, a battery cluster negative 3 installed on one side of the battery cluster positive 2, and a protection mechanism 4 provided on one side of the battery cluster positive 2 and the battery cluster negative 3. The protection mechanism 4 ensures the safety of the battery cluster. A dustproof mechanism 5 is threadedly connected to the right side of the battery casing 1. The dustproof mechanism 5 prevents excessive dust accumulation and shortens the service life of the device. The protection mechanism 4 includes a relay 401 located on one side of the battery cluster positive 2 and the battery cluster negative 3. One side of the relay 401 is electrically connected to a BMS module 402 via a power line, and the other side of the relay 401 is electrically connected to a circuit breaker 403 via a power line. One side of the circuit breaker 403 is electrically connected to a fast-acting fuse 404 via a power line. The dustproof mechanism 5 includes a dust cover 501 threadedly connected to the right side of the battery casing 1. The surface of the dust cover 501 has several heat dissipation vents 502.

[0025] The surface of the dust cover 501 has four threaded holes, and the internal threads of the threaded holes are connected to threaded posts 10. The dust cover 501 serves to prevent dust.

[0026] There is a placement slot starting from the middle right side of the battery casing 1. The BMS module 402 is threaded into the inside of the placement slot. The placement slot serves to install the BMS module 402.

[0027] A sealing cover 6 is threadedly connected to the top of the battery casing 1. The relay 401, circuit breaker 403, and fast fuse 404 are all installed inside the battery casing 1. The sealing cover 6 serves to seal the battery casing 1.

[0028] Two heat dissipation holes are provided on the left side of the battery casing 1. A cooling fan 7 is installed inside the heat dissipation holes, which serves to dissipate heat.

[0029] The surface of the cooling fan 7 is equipped with a dust filter 8, which is made of metal. The dust filter 8 serves to block dust.

[0030] Two extension blocks 9 are fixedly connected to the lower surface of the battery casing 1. Each extension block 9 has two positioning holes on its surface. The positioning holes serve to fix the battery casing 1.

[0031] In this invention, the working steps of the device are as follows:

[0032] First step: During use, a relay 401 is installed in both the positive and negative circuits of the battery cluster to ensure that the energized circuit of the battery cluster can be safely and quickly cut off during charging or discharging under the emergency cut-off command of the BMS module 402, thus ensuring the safety of the battery cluster; the circuit breaker 403 can be manually disconnected directly in case of emergency and during later maintenance, serving as a switch circuit with good convenience and safety; the fast-acting fuse 404 can ensure that the ground circuit is quickly cut off when a short circuit or high current occurs in the battery cluster circuit;

[0033] Second step: When in use, since the BMS module 402 is installed on the outside of the battery casing 1, it is easily affected by the external environment, causing dust to adhere to the surface of the BMS module 402. Therefore, a dust cover 501 is provided on the surface of the BMS module 402 to protect the BMS module 402 from dust.

[0034] It should be noted that the device structure and accompanying drawings of this utility model mainly describe the principle of this utility model. In terms of the technical aspects of this design principle, the setting of the power mechanism, power supply system and control system of the device is not fully described. However, under the premise that those skilled in the art understand the principle of the above utility model, the specific details of its power mechanism, power supply system and control system can be clearly understood. The control method in the application document is automatic control through a controller. The control circuit of the controller can be implemented by those skilled in the art through simple programming.

[0035] All standard parts used can be purchased from the market, and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the existing technology. The machinery, parts and equipment adopt conventional models in the existing technology, and the structure and principle of the components known to those skilled in the art can be known by those skilled in the art through technical manuals or conventional experimental methods.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A battery charging and discharging protection device in a portable energy storage system, comprising a battery casing (1), characterized in that: A battery cluster positive (2) is installed on the right edge of the battery casing (1), and a battery cluster negative (3) is installed on one side of the battery cluster positive (2). A protective mechanism (4) is provided on one side of the battery cluster positive (2) and the battery cluster negative (3). A dustproof mechanism (5) is threadedly connected to the right side of the battery casing (1). The protection mechanism (4) includes a relay (401) disposed on one side of the battery cluster positive (2) and battery cluster negative (3). One side of the relay (401) is electrically connected to a BMS module (402) via a power line, and the other side of the relay (401) is electrically connected to a circuit breaker (403) via a power line. One side of the circuit breaker (403) is electrically connected to a fast-acting fuse (404) via a power line. The dustproof mechanism (5) includes a dust cover (501) threaded to the right side of the battery casing (1), and the surface of the dust cover (501) is provided with a plurality of heat dissipation vents (502).

2. The battery charging and discharging protection device in a portable energy storage system according to claim 1, characterized in that: The surface of the dust cover (501) is provided with four threaded holes, and the threaded holes are internally connected to threaded posts (10).

3. The battery charging and discharging protection device in a portable energy storage system according to claim 1, characterized in that: The battery casing (1) has a placement groove starting from the middle of the right side, and the BMS module (402) is threaded into the inside of the placement groove.

4. The battery charging and discharging protection device in a portable energy storage system according to claim 1, characterized in that: The top of the battery casing (1) is threaded with a sealing cap (6), and the relay (401), circuit breaker (403), and fast fuse (404) are all installed inside the battery casing (1).

5. The battery charging and discharging protection device in a portable energy storage system according to claim 1, characterized in that: Two heat dissipation holes are provided on the left side of the battery casing (1), and a cooling fan (7) is installed inside the heat dissipation holes.

6. The battery charging and discharging protection device in a portable energy storage system according to claim 5, characterized in that: The surface of the cooling fan (7) is fitted with a dustproof mesh (8), which is made of metal.

7. The battery charging and discharging protection device in a portable energy storage system according to claim 1, characterized in that: Two extension blocks (9) are fixedly connected to the lower surface of the battery casing (1), and two positioning holes are opened on the surface of each extension block (9).

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