A structure-stable lithium battery

Abstract

The utility model discloses a kind of stable structure lithium battery, including box, the inside of the box is equipped with multiple electric core, box top is connected with the access cover by fixed bolt;Fixing mechanism is set in the box, and the top of positioning frame is fixedly connected with protection frame by bolt, electric core is sequentially arranged between two protection frames, protection frame and electric core are correspondingly arranged, and the surface of protection frame and electric core is fixedly connected with fixing belt, the top of protection frame is fixedly connected with protection plate, and the top of protection plate is fixedly connected with support column, the utility model realizes the three-dimensional location of electric core, by the setting of telescopic support column cooperation pre-tight spring, always keep the top pressure of access cover, effectively offset the displacement risk of electric core under vibration, impact working condition, avoid the contact of electric core displacement resulting in poor.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery technology, specifically to a structurally stable lithium battery. Background Technology

[0002] Lithium-ion batteries are a type of battery that uses lithium metal or lithium alloys as the positive / negative electrode materials and a non-aqueous electrolyte solution. Due to the highly reactive chemical properties of lithium metal, its processing, storage, and use require very strict environmental control. With the development of science and technology, lithium-ion batteries have become the mainstream technology.

[0003] Traditional lithium battery packs often use a single frame clamp or simple binding to fix the cells. Under conditions of vibration and impact, the cells are prone to displacement, resulting in poor contact and thus safety hazards. Utility Model Content

[0004] The purpose of this invention is to provide a structurally stable lithium battery to solve the technical problem that cell displacement and poor contact can easily occur when using a single frame clamp, leading to safety hazards.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A structurally stable lithium battery includes a housing with multiple battery cells installed inside. A maintenance cover is connected to the top of the housing by fixing bolts. A fixing mechanism is disposed inside the housing and includes positioning frames symmetrically arranged at the bottom of the housing. A protective frame is fixedly connected to the top of the positioning frame by bolts. The battery cells are arranged sequentially between two protective frames, with the protective frames and battery cells corresponding to each other. Fixing straps are fixedly connected to the surfaces of the protective frames and battery cells. A protective plate is fixedly connected to the top of the protective frame, and a support column is fixedly connected to the top of the protective plate.

[0007] As a preferred embodiment of this utility model, the top of the support column fits into the bottom of the inspection cover, and a sealing ring corresponding to the inspection cover is provided on the top of the box.

[0008] As a preferred embodiment of this utility model, the fixing strap is made of flame-retardant nylon and the protective frame is made of plastic.

[0009] As a preferred embodiment of this utility model, a circuit board electrically connected to the battery cell is installed on the inner wall of the housing, and an interface electrically connected to the circuit board is provided on the outer surface of the housing.

[0010] As a preferred embodiment of this utility model, handles are symmetrically arranged on both sides of the box, and the box is made of aluminum alloy.

[0011] As a preferred embodiment of this utility model, the support column is configured as a telescopic structure, including an outer sleeve and an inner rod. The outer sleeve is fixedly connected to the protective plate, the top of the inner rod is fitted with the inspection cover, and a pre-tensioning spring is provided inside the outer sleeve.

[0012] As a further preferred embodiment of this utility model, a temperature sensor is integrated on the circuit board, the detection end of the temperature sensor extends into the gap between the battery cells, and a fuse protector is connected in series between the circuit board and the interface.

[0013] Compared with existing technologies, the structurally stable lithium battery provided by this utility model has the following beneficial effects:

[0014] This utility model achieves three-dimensional positioning of the battery cell through the cooperation of the bottom positioning frame, the two side protective frames, the fixing strap and the top support column. The telescopic support column and the pre-tightening spring can always maintain the top force on the inspection cover, effectively offsetting the risk of displacement of the battery cell under vibration and impact conditions, and avoiding poor contact caused by battery cell displacement.

[0015] The temperature sensor on the circuit board can monitor the temperature of the 200-cell gap in real time. Together with the series-connected fuse protector, it can respond quickly under abnormal conditions to prevent safety hazards caused by overcharging and overcurrent. The sealing ring design on the top of the enclosure improves the overall sealing performance and effectively blocks external moisture and dust. The layout of the protective frame only on both sides of the cell reduces the obstruction of the heat dissipation channel. Combined with the excellent thermal conductivity of the aluminum alloy enclosure, it can quickly dissipate internal heat and extend the service life of the cell. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only examples of embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the box in an embodiment of this utility model;

[0019] Figure 3 This is a schematic diagram of the battery cell installation structure in an embodiment of this utility model;

[0020] Figure 4 This is a schematic diagram of the fixing mechanism in an embodiment of the present utility model.

[0021] Figure label:

[0022] 100. Enclosure; 120. Inspection cover; 130. Fixing bolt; 140. Handle; 150. Interface; 160. Circuit board; 200. Battery cell; 300. Fixing mechanism; 310. Positioning frame; 320. Protective frame; 330. Fixing strap; 340. Protective plate; 350. Support column. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only for explaining the present invention and are not intended to limit the present invention.

[0024] In the description of the embodiments of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of the present invention 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 the embodiments of the present invention.

[0025] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation", "connection" and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an integral connection, or a detachable connection; they can refer to the internal connection of two components; they can refer to a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present invention should be understood according to the specific circumstances.

[0026] like Figure 1 - Figure 4 As shown in the figure, a structurally stable lithium battery according to an embodiment of the present invention includes a housing 100, in which multiple battery cells 200 are installed. A maintenance cover 120 is connected to the top of the housing 100 by fixing bolts 130. A fixing mechanism 300 is disposed inside the housing 100. The fixing mechanism 300 includes positioning frames 310 symmetrically arranged at the bottom of the housing 100. A protective frame 320 is fixedly connected to the top of the positioning frame 310 by bolts. The battery cells 200 are arranged sequentially between two protective frames 320. The protective frames 320 and the battery cells 200 are correspondingly arranged. A fixing strap 330 is fixedly connected to the surface of the protective frame 320 and the battery cells 200. A protective plate 340 is fixedly connected to the top of the protective frame 320. A support column 350 is fixedly connected to the top of the protective plate 340.

[0027] The above technical solution achieves three-dimensional positioning of the battery cell 200 through the cooperation of the bottom positioning frame 310, the two side protective frames 320, the fixing strap 330 and the top support column 350. The telescopic support column 350, in conjunction with the pre-tightening spring, can always maintain the pressing force on the inspection cover 120, effectively offsetting the risk of displacement of the battery cell 200 under vibration and impact conditions, and avoiding poor contact caused by displacement of the battery cell 200.

[0028] The temperature sensor on the circuit board 160 can monitor the temperature between the cells 200 in real time. Together with the series-connected fuse protector, it can respond quickly under abnormal operating conditions to prevent safety hazards caused by overcharging and overcurrent. The sealing ring design on the top of the enclosure 100 improves the overall sealing performance and effectively blocks external moisture and dust. The layout of the protective frame 320, which is only set on both sides of the cells 200, reduces the obstruction of the heat dissipation channel. Combined with the excellent thermal conductivity of the aluminum alloy enclosure 100, it can quickly dissipate internal heat and extend the service life of the cells 200.

[0029] To improve structural strength, the top of the support column 350 fits snugly against the bottom of the inspection cover 120, and a sealing ring corresponding to the inspection cover 120 is provided on the top of the housing 100. When the inspection cover 120 is fixed to the top of the housing 100 by the fixing bolts 130, the support column 350 and the inspection cover 120 form a tight mechanical contact. When the top inspection cover 120 is subjected to force, it can be evenly transmitted to the support column 350, and the sealing ring is compressed to form a reliable sealing barrier, which can prevent external liquids and dust from entering and corroding the battery cell 200 and circuit board 160.

[0030] To optimize the performance of the protective frame 320, the fixing strap 330 is made of flame-retardant nylon, and the protective frame 320 is made of plastic. The plastic frame is lightweight, has good insulation and high precision, can match the arrangement spacing of the battery cells 200 and avoid short circuits between the battery cells 200.

[0031] To enable electrical control and external interaction of the battery pack, a circuit board 160 electrically connected to the battery cells 200 is installed on the inner wall of the housing 100, and an interface 150 electrically connected to the circuit board 160 is provided on the outer surface of the housing 100. The circuit board 160, as the core control unit, is connected to the positive and negative terminals of each battery cell 200 via wires, enabling precise management of the charging and discharging process of the battery cells 200 and extending their service life.

[0032] To enhance the structural performance of the housing 100, symmetrical handles 140 are provided on both sides of the housing 100, which is made of aluminum alloy. The aluminum alloy housing 100 is formed by die casting, which can withstand external impacts and has excellent thermal conductivity, allowing the heat generated by the battery cells 200 during operation to be quickly conducted to the outside. The handles 140 on both sides have a folding design, which can be stored in the grooves on the side wall of the housing 100 when not in use to reduce space occupation, and unfolded during transportation to provide a comfortable grip point, greatly reducing the difficulty of moving the battery pack.

[0033] To adapt to dimensional changes under different working conditions, the support column 350 is designed as a telescopic structure, including an outer sleeve and an inner rod. The outer sleeve is fixedly connected to the protective plate 340, and the top of the inner rod fits against the inspection cover 120. A pre-tensioning spring is installed inside the outer sleeve. When the battery cell 200 expands or contracts slightly due to temperature changes, the inner rod can slide freely inside the outer sleeve, and the pre-tensioning spring compensates for the dimensional changes in real time, maintaining a stable pressure on the inspection cover 120 at all times. This avoids the squeezing damage to the battery cell 200 that may be caused by rigid support, and also ensures the vertical limiting effect, making it suitable for environments with large temperature fluctuations.

[0034] To enhance the safety of the battery pack, a temperature sensor is integrated on the circuit board 160. The sensor's detection end extends into the gap between the battery cells 200. A fuse is connected in series between the circuit board 160 and the interface 150. The temperature sensor directly monitors the core temperature of the battery cell 200 during operation. When an abnormal temperature rise is detected, the circuit board 160 can quickly cut off the charging and discharging circuit. The fuse acts as a physical safety barrier, completely blocking the current by melting itself in extreme situations such as short circuits or overcurrents. This dual protection mechanism significantly reduces the risk of battery pack fire and explosion, improving safety.

[0035] This utility model provides a structurally stable lithium battery that achieves three-dimensional positioning of the cell 200. Through the telescopic support column 350 and the pre-tightening spring, a constant clamping force on the inspection cover 120 is maintained, effectively mitigating the risk of displacement of the cell 200 under vibration and impact conditions and preventing poor contact caused by cell displacement. A temperature sensor on the circuit board 160 can monitor the gap temperature between the cells 200 in real time. Combined with a series-connected fuse protector, it can respond quickly under abnormal conditions, preventing safety hazards caused by overcharging and overcurrent. The sealing ring design on the top of the casing 100 improves overall sealing, effectively blocking external moisture and dust. The protective frame 320, positioned only on both sides of the cell 200, reduces obstruction of the heat dissipation channel. Combined with the excellent thermal conductivity of the aluminum alloy casing 100, it quickly dissipates internal heat, extending the service life of the cell 200.

[0036] In use, first move the lithium battery pack to the target installation position using the handles 140 on both sides of the housing 100. After ensuring stable placement, establish an electrical connection with external equipment through the interface 150 on the outer surface of the housing 100 to achieve normal charging and discharging operations. The circuit board 160 monitors the working status of the battery cells 200 in real time, and the temperature sensor continuously collects the temperature of the gap between the battery cells 200. If an abnormal temperature rise is detected, the circuit board 160 will immediately activate the protection mechanism. When a short circuit or overcurrent occurs in the circuit, the fuse will quickly melt to cut off the circuit and avoid danger. In vibration or impact environments, the bottom positioning frame 310, the side protection frames 320, the fixing straps 330, and the top support column 350 work together to ensure that the battery cells 200 always maintain a relatively stable position, avoiding poor contact or structural damage caused by displacement.

[0037] The foregoing has shown and described the basic principles of the present invention. The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. The above embodiments and descriptions in the specification are only illustrative of the principles of the present invention. Any modifications, equivalent substitutions, and improvements made within the scope of the present invention without departing from the scope of the present invention should be included within the protection scope of the present invention.

Claims

1. A structurally stable lithium battery, characterized in that... include: The enclosure (100) has multiple battery cells (200) installed inside, and the top of the enclosure (100) is connected to an inspection cover (120) by fixing bolts (130). A fixing mechanism (300) is installed inside the housing (100). The fixing mechanism (300) includes a positioning frame (310) symmetrically arranged at the bottom of the housing (100). A protective frame (320) is fixedly connected to the top of the positioning frame (310) by bolts. The battery cells (200) are arranged sequentially between the two protective frames (320). The protective frames (320) and the battery cells (200) are arranged correspondingly. A fixing strap (330) is fixedly connected to the surface of the protective frame (320) and the battery cells (200). A protective plate (340) is fixedly connected to the top of the protective frame (320). A support column (350) is fixedly connected to the top of the protective plate (340).

2. The structurally stable lithium battery according to claim 1, characterized in that: The top of the support column (350) fits against the bottom of the inspection cover (120), and the top of the box (100) is provided with a sealing ring corresponding to the inspection cover (120).

3. A structurally stable lithium battery according to claim 1, characterized in that: The fixing strap (330) is made of flame-retardant nylon, and the protective frame (320) is made of plastic.

4. A structurally stable lithium battery according to claim 1, characterized in that: The inner wall of the housing (100) is equipped with a circuit board (160) that is electrically connected to the battery cell (200), and the outer surface of the housing (100) is provided with an interface (150) that is electrically connected to the circuit board (160).

5. A structurally stable lithium battery according to claim 1, characterized in that: The box (100) is symmetrically provided with handles (140) on both sides, and the box (100) is made of aluminum alloy.

6. A structurally stable lithium battery according to claim 1, characterized in that: The support column (350) is configured as a telescopic structure, including an outer sleeve and an inner rod. The outer sleeve is fixedly connected to the protective plate (340), the top of the inner rod is fitted with the inspection cover (120), and a pre-tightening spring is provided inside the outer sleeve.

7. A structurally stable lithium battery according to claim 4, characterized in that: A temperature sensor is integrated on the circuit board (160), and the detection end of the temperature sensor extends into the gap between the battery cells (200). A fuse protector is connected in series between the circuit board (160) and the interface (150).

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