Lightweight backup power battery structure

Abstract

The utility model discloses a kind of lightweight backup power supply battery structure, including by carbon fiber composite material integrated molding shell, at least two detachable battery module, elastic connecting mechanism and heat dissipation component, the heat dissipation component includes heat-conducting fin vertically fixed in the inner wall of shell both sides, the heat-conducting fin extends to outside through shell side wall, the inside of the shell forms rectangular accommodating cavity, the battery module is arranged by at least two battery modules along the length direction of accommodating cavity composition. Carbon fiber composite material integrated molding shell greatly reduce weight, while have high impact resistance and corrosion resistance, meet portable and durable demand. Heat-conducting fin and air cooling channel are combined to strengthen heat dissipation, magnetic dustproof filter screen guarantees heat dissipation efficiency and is easy to clean. Its five, aluminum plastic film soft package expansion type fireproof coating improves safety, detachable design reduces maintenance cost, realizes the synergic optimization of lightweight, stability and safety.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, specifically to a lightweight backup power battery structure. Background Technology

[0002] In emergency power supply and outdoor operations, the lightweight, stability, and safety of backup power batteries are crucial. Existing backup power battery structures have several shortcomings: the casings are mostly made of metal, resulting in heavy weight and poor portability, making them unsuitable for mobile applications; rigid connections between battery modules are common, making them prone to loosening due to vibration and installation errors, leading to excessive contact resistance that not only increases energy consumption but can also cause overheating; the heat dissipation design is simplistic, relying heavily on natural cooling, which can lead to heat buildup and cell performance degradation or even thermal runaway; effective buffering structures are lacking in protection, making cells vulnerable to impact damage, and fire prevention measures are insufficient, posing significant safety hazards; furthermore, traditional battery modules are complex to assemble and disassemble, requiring complete disassembly for maintenance, which is time-consuming and labor-intensive. Utility Model Content

[0003] To overcome the shortcomings of existing technical solutions, this utility model provides a lightweight backup power battery structure, which can effectively solve the problems mentioned in the background art.

[0004] The technical solution adopted by this utility model to solve its technical problem is:

[0005] A lightweight backup power battery structure includes an integrally molded shell made of carbon fiber composite material, at least two detachable battery modules, an elastic connection mechanism, and a heat dissipation component. The heat dissipation component includes heat-conducting fins vertically fixed to the inner walls of both sides of the shell. The heat-conducting fins extend through the side walls of the shell to the outside. A rectangular accommodating cavity is formed inside the shell. The battery module is composed of at least two battery modules arranged along the length of the accommodating cavity. Each battery module includes multiple battery cells and an aluminum-plastic film soft pack covering the battery cells.

[0006] The elastic connection mechanism is disposed between adjacent battery modules, and the elastic connection mechanism includes spring contacts fixed on the battery cell tabs and elastic conductive sheets connecting adjacent spring contacts.

[0007] As a further description of the above technical solution, the bottom of the accommodating cavity is provided with an elastic support structure, the elastic support structure including a corrugated metal spring sheet fixed to the bottom wall of the outer shell and a buffer silicone layer attached to the upper surface of the metal spring sheet, the buffer silicone layer abutting against the bottom surface of the battery module.

[0008] As a further description of the above technical solution, the top of the battery module is also provided with a quick-release buckle assembly. The quick-release buckle assembly includes a rotating shaft, a buckle base fixed to the inner side of the top wall of the outer shell, and a movable buckle block hinged to the top surface of the battery module through the rotating shaft. The free end of the movable buckle block is provided with a wedge-shaped protrusion, and a spring for driving the movable buckle block to lock and reset with the buckle base is sleeved on the rotating shaft.

[0009] As a further description of the above technical solution, the inner wall of the housing is provided with a modular slot, the modular slot is connected to the battery module, and the modular slot is provided with a sliding guide rail extending along the width direction of the accommodating cavity, a limiting slot perpendicular to the sliding guide rail, and a positioning boss located at the bottom of the slot.

[0010] As a further description of the above technical solution, the battery module is provided with guide sliders on both sides, and the guide sliders are slidably engaged with the sliding guide rail.

[0011] As a further description of the above technical solution, the heat-conducting fin is provided with a cooling channel that runs through adjacent battery modules, and the two ends of the cooling channel are respectively connected to the air inlet and air outlet of the outer casing.

[0012] As a further description of the above technical solution, a magnetic dust filter is provided at the air inlet, and the dust filter is attached to the outer wall of the outer shell by a magnetic frame.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] The lightweight backup power battery structure of this utility model has at least one of the following beneficial effects during use:

[0015] First, the unibody carbon fiber composite shell significantly reduces weight while maintaining high impact resistance and corrosion resistance, meeting the requirements for portability and durability. Second, modular slots and quick-release components form a "hard positioning + soft locking" fixation, combined with a bottom elastic support structure, which absorbs vibration energy, effectively protecting the battery cells and extending their service life. Third, the low contact resistance of the spring-loaded contacts in the elastic connection mechanism ensures stable current transmission, reducing heat generation and power supply fluctuations. Fourth, the combination of heat-conducting fins and air-cooling channels enhances heat dissipation, while the magnetic dust filter ensures efficient heat dissipation and is easy to clean. Fifth, the aluminum-plastic film soft-pack intumescent fire-retardant coating improves safety, and the detachable design reduces maintenance costs, achieving a synergistic optimization of lightweight, stability, and safety. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a lightweight backup power battery according to the present invention.

[0017] Figure 2This is a schematic diagram of the first side view of a lightweight backup power battery structure according to the present invention.

[0018] Figure 3 This is a schematic diagram of the second side of a lightweight backup power battery structure according to the present invention.

[0019] Figure 4 This is a perspective structural diagram of a lightweight backup power battery structure according to the present invention.

[0020] Numbering on the map:

[0021] 1. Outer shell; 101. Receiving cavity; 102. Elastic support structure; 103. Positioning boss; 104. Wave-shaped metal spring; 2. Battery module; 201. Battery cell; 202. Spring-type contact; 203. Elastic conductive sheet; 204. Guide slider; 3. Heat dissipation assembly; 301. Heat-conducting fins; 302. Air-cooling channel; 4. Quick-release assembly; 401. Snap-on base; 402. Movable latch; 403. Rotating shaft. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] like Figure 1-4 As shown, this utility model provides a lightweight backup power battery structure, including a shell 1 integrally formed from carbon fiber composite material, at least two detachable battery modules 2, an elastic connection mechanism, and a heat dissipation assembly 3. The heat dissipation assembly 3 includes heat-conducting fins 301 vertically fixed to the inner walls of both sides of the shell 1, and the heat-conducting fins 301 extend through the side walls of the shell 1 to the outside. The interior of the shell 1 forms a rectangular accommodating cavity 101. The battery module 2 is composed of at least two battery modules arranged along the length of the accommodating cavity 101. Each battery module includes multiple battery cells 201 and an aluminum-plastic film soft pack covering the battery cells 201. The surface of the aluminum-plastic film soft pack is coated with an intumescent fire-retardant coating with a coating thickness of 0.05–0.1 mm.

[0024] The core load-bearing structure is a one-piece carbon fiber composite shell 1, whose internal rectangular accommodating cavity 101 provides installation space for the battery module 2. The detachable battery module 2 is precisely positioned through modular slots on the inner wall of the shell 1: the guide sliders 204 on both sides of the battery module 2 slide and engage with the sliding guide rails of the slots to ensure accurate installation path; the limiting slot restricts lateral displacement, and the positioning boss 103 fixes the longitudinal position to prevent the battery module from loosening during use. The quick-release buckle assembly 4 at the top further strengthens the fixation of the battery module by locking the movable buckle block 402 with the buckle base 401 (the return spring drives the buckle block to continuously press), while facilitating quick disassembly and maintenance.

[0025] The elastic connection mechanism is disposed between adjacent battery modules. The elastic connection mechanism includes spring-type contacts 202 fixed on the tabs of the battery cell 201 and elastic conductive sheets 203 connecting adjacent spring-type contacts 202. The compression stroke of the spring-type contacts 202 is 2.0–2.5 mm, and the contact resistance is ≤50 mΩ.

[0026] Adjacent battery modules are electrically connected through an elastic connection mechanism: spring-type contacts 202 fixed to the tabs of the battery cell 201 are connected by elastic conductive sheets 203. The compression stroke of the spring (2.0-2.5mm) compensates for displacement caused by installation errors or vibration, ensuring tight contact. At the same time, the design with a contact resistance of ≤50mΩ ensures extremely low loss during current transmission, avoiding overheating or power interruption due to poor contact, and achieving stable electrical signal and energy transfer.

[0027] The heat-conducting fins 301, which are vertically fixed to the inner wall of the outer casing 1, directly contact the battery module and quickly conduct heat to the outside of the outer casing 1 through the fins (the fins penetrate the side wall of the outer casing 1 to accelerate heat diffusion).

[0028] The bottom elastic support structure 102 (wave-shaped metal spring 104 + buffer silicone layer) absorbs vibration and impact through dual elastic deformation: the metal spring provides rigid buffering, and the silicone layer further attenuates the impact force, preventing the battery module (especially the cell 201) from being directly damaged by external forces; the 0.05-0.1mm intumescent fireproof coating on the surface of the aluminum-plastic film soft pack expands to form a heat insulation layer under high temperature or abnormal conditions, delaying the spread of heat and improving safety.

[0029] Furthermore, the bottom of the accommodating cavity 101 is provided with an elastic support structure 102. The elastic support structure 102 includes a corrugated metal spring sheet 104 fixed to the bottom wall of the outer shell 1 and a buffer silicone layer attached to the upper surface of the metal spring sheet. The buffer silicone layer abuts against the bottom surface of the battery module. The carbon fiber composite outer shell 1 is integrally molded, which significantly reduces the weight compared to the traditional metal outer shell 1, while possessing high impact resistance and corrosion resistance.

[0030] Furthermore, the top of the battery module is equipped with a quick-release buckle assembly 4. The quick-release buckle assembly 4 includes a rotating shaft 403, a buckle base 401 fixed to the inner side of the top wall of the outer casing 1, and a movable buckle block 402 hinged to the top surface of the battery module via the rotating shaft 403. The free end of the movable buckle block 402 has a wedge-shaped protrusion. A spring for driving the movable buckle block 402 to lock and return with the buckle base 401 is sleeved on the rotating shaft 403. The detachable battery module 2 and the quick-release buckle design facilitate the replacement or maintenance of individual modules. The magnetic dust filter is fixed by magnetic adsorption and can be disassembled and cleaned at any time, preventing dust from clogging the heat dissipation channels, maintaining long-term stable heat dissipation efficiency, and reducing maintenance time and costs.

[0031] Furthermore, the inner wall of the outer casing 1 is provided with a modular slot, which is connected to the battery module. The modular slot has a sliding guide rail extending along the width direction of the accommodating cavity 101, a limiting slot perpendicular to the sliding guide rail, and a positioning boss 103 located at the bottom of the slot. The modular slot (guide rail + slot + boss) and the quick-release assembly 4 form a double fixation of "hard positioning + soft locking" to prevent the battery module from loosening; the bottom elastic support structure 102 can absorb more than 80% of the vibration energy, effectively protecting the battery cell 201 from impact damage and extending the battery life.

[0032] Furthermore, the battery module is equipped with guide sliders 204 on both sides, which slide in conjunction with the sliding guide rail. The spring-type contacts 202 of the elastic connection mechanism compensate for displacement errors through a compression stroke of 2.0-2.5mm, and with a low contact resistance of ≤50mΩ, ensure minimal current transmission loss, reduce heat generation or power supply fluctuations caused by poor contact, and improve power supply stability.

[0033] Furthermore, the heat-conducting fins are equipped with air-cooling channels 302 that connect adjacent battery modules. The two ends of the air-cooling channels 302 are respectively connected to the air inlet and air outlet of the outer casing 1. The air-cooling channels 302 on the heat-conducting fins 301 connect the air inlet and air outlet, forming an airflow path. Through natural convection or an auxiliary fan, the airflow carries away the heat from the surface of the fins and battery modules, thereby enhancing heat dissipation efficiency.

[0034] Furthermore, the air inlet is equipped with a magnetic dust filter, which is attached to the outer wall of the outer casing 1 via a magnetic frame. This magnetic dust filter at the air inlet, attached to the outer casing 1 via a magnetic frame, prevents dust from entering the channel, avoids dust accumulation affecting heat dissipation, and is also easy to disassemble and clean.

[0035] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A lightweight backup power battery structure, characterized in that: The device includes an integrally molded shell made of carbon fiber composite material, at least two detachable battery modules, a flexible connection mechanism, and a heat dissipation assembly. The heat dissipation assembly includes heat-conducting fins that are vertically fixed to the inner walls of both sides of the shell. The heat-conducting fins extend through the side walls of the shell to the outside. The interior of the shell forms a rectangular accommodating cavity. The battery module is composed of at least two battery modules arranged along the length of the accommodating cavity. Each battery module includes multiple battery cells and an aluminum-plastic film soft pack covering the battery cells. The elastic connection mechanism is disposed between adjacent battery modules, and the elastic connection mechanism includes spring contacts fixed on the battery cell tabs and elastic conductive sheets connecting adjacent spring contacts.

2. The lightweight backup power battery structure according to claim 1, characterized in that: The bottom of the accommodating cavity is provided with an elastic support structure, which includes a corrugated metal spring fixed to the bottom wall of the outer shell and a buffer silicone layer attached to the upper surface of the metal spring. The buffer silicone layer abuts against the bottom surface of the battery module.

3. The lightweight backup power battery structure according to claim 1, characterized in that: The top of the battery module is also provided with a quick-release buckle assembly, which includes a rotating shaft, a buckle base fixed to the inner side of the top wall of the housing, and a movable buckle block hinged to the top surface of the battery module via the rotating shaft. The free end of the movable buckle block is provided with a wedge-shaped protrusion, and a spring for driving the movable buckle block to lock and reset with the buckle base is sleeved on the rotating shaft.

4. The lightweight backup power battery structure according to claim 1, characterized in that: The inner wall of the housing is provided with a modular slot, which is connected to the battery module. The modular slot is provided with a sliding guide rail extending along the width of the accommodating cavity, a limiting slot perpendicular to the sliding guide rail, and a positioning boss located at the bottom of the slot.

5. The lightweight backup power battery structure according to claim 4, characterized in that: The battery module has guide sliders on both sides, and the guide sliders slide in conjunction with the sliding guide rail.

6. The lightweight backup power battery structure according to claim 1, characterized in that: The heat-conducting fins are provided with air-cooling channels that run through adjacent battery modules, and the two ends of the air-cooling channels are respectively connected to the air inlet and air outlet of the outer casing.

7. A lightweight backup power battery structure according to claim 6, characterized in that: The air inlet is equipped with a magnetic dust filter, which is attached to the outer wall of the outer casing by a magnetic frame.

Images