Explosion-proof battery pack

Abstract

The invention discloses an explosion-proof battery pack, and relates to the technical field of batteries. The explosion-proof battery pack comprises an ER14500 battery, a forward diode, a backward diode, a lithium super capacitor, a current-limiting resistor, a fuse and a temperature fuse, one ER14500 battery is connected in series with one forward diode in the forward direction to form a group of battery pack sub-modules; every two of the ten battery pack sub-modules are connected in parallel to form five battery pack modules; the five lithium super capacitors are respectively connected in parallel with the five battery pack modules in the forward direction; the five battery pack modules are connected in series through the PCBA; the five groups of battery pack modules which are connected in series are reversely connected in parallel with a reverse diode through a PCBA (Printed Circuit Board Assembly); and a fuse, a temperature fuse and a current-limiting resistor are connected to a positive line of the five battery pack modules to form the explosion-proof battery pack. The battery pack disclosed by the invention has strong safe use performance, can provide a reliable, stable and safe driving power supply, and can be suitable for flammable and explosive industries such as mining industry.

Description

Technical Field

[0001] The present invention belongs to the technical field of batteries, and in particular relates to an explosion-proof battery pack. Background Art

[0002] With the continuous development of the mining industry, battery-powered equipment is increasingly being used, particularly in flammable and explosive environments such as coal mines. However, due to the unique environment in mines, such as the presence of flammable gases and dust, traditional battery packs pose serious safety risks in these environments. Consequently, there is a growing demand for explosion-proof battery packs to ensure the proper operation of equipment and prevent accidents.

[0003] In hazardous environments like mines, electrical equipment is particularly susceptible to environmental influences such as high temperatures, high humidity, and explosive gases. Therefore, explosion-proof technology has become a key technical requirement for mining equipment design. Explosion-proof battery packs must meet stringent safety standards, requiring not only explosion resistance but also stable operation in extreme environments.

[0004] Existing explosion-proof battery pack technologies primarily rely on explosion-proof housing materials, overcharge and over-discharge protection, and temperature monitoring. However, these technologies still have limitations, such as insufficient explosion-proof performance and high costs. Therefore, developing an explosion-proof battery pack suitable for mining environments with more stable performance and enhanced safety has become a key issue in current mining equipment safety technology. Summary of the Invention

[0005] The object of the present invention is to provide an explosion-proof battery pack, which can be achieved through the following technical solutions:

[0006] The embodiment of the present application provides an explosion-proof battery pack, including an ER14500 battery, a forward diode, a reverse diode, a lithium supercapacitor, a current limiting resistor, a fuse, and a temperature fuse;

[0007] One of the ER14500 batteries is connected in series with one of the forward diodes in the forward direction to form a group of battery submodules;

[0008] The ten battery submodules are connected in parallel in pairs to form five battery modules;

[0009] The five lithium supercapacitors are respectively connected in parallel to the five battery modules;

[0010] Connecting the five battery modules connected in parallel with the lithium supercapacitor in series through PCBA;

[0011] Furthermore, the five battery modules connected in series are connected in reverse parallel to the reverse diodes through the PCBA;

[0012] The fuse, the temperature fuse and the current-limiting resistor are connected to the positive lines of the five battery modules to form the explosion-proof battery pack.

[0013] Preferably, there are ten ER14500 batteries; ten forward diodes; and five reverse diodes.

[0014] Preferably, between the battery modules connected in series, the positive electrode and the negative electrode are respectively protected by insulating barley paper.

[0015] Preferably, the explosion-proof battery pack is bound and fixed by a heat shrink film.

[0016] The present invention provides a high-power battery pack suitable for use in flammable and explosive industries such as mining, with superior safety performance. In this explosion-proof battery pack, each battery is connected in series with a diode in the forward direction, then connected in parallel to form a 1S2P ER14500 battery pack. A diode is then connected in reverse parallel with a lithium supercapacitor in the forward direction to the 1S2P ER14500 battery pack. A fuse, a current-limiting resistor, and a temperature fuse are also added to the overall circuit of the explosion-proof battery pack. Furthermore, PCBA is used for patching and soldering the batteries, resulting in an excellent size and spatial arrangement design. Between the two series-connected battery packs, both the positive and negative poles are protected with insulating barley paper, and the battery packs are then secured with heat shrink film, resulting in reliable insulation and safety performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] For better understanding and implementation, the technical solution of the present application is described in detail below with reference to the accompanying drawings.

[0018] Figure 1 A schematic diagram of the external structure of an explosion-proof battery pack provided in an embodiment of the present application;

[0019] Figure 2 A schematic diagram of the internal structure of an explosion-proof battery pack provided in an embodiment of the present application;

[0020] Figure 3 A schematic diagram of the internal circuit structure of an explosion-proof battery pack provided in an embodiment of the present application;

[0021] Description of Reference Numerals

[0022] In the figure: 1. ER14500 battery; 2. Forward diode; 3. Reverse diode; 4. Lithium supercapacitor; 5. Current-limiting resistor; 6. Fuse; 7. Thermal fuse. DETAILED DESCRIPTION

[0023] To further illustrate the technical means and effectiveness of the present invention in achieving its intended purpose, exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all possible embodiments consistent with the present application. Rather, they are merely examples of methods and systems consistent with certain aspects of the present application, as detailed in the appended claims.

[0024] The terms used in this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The singular forms "a," "an," "the," and "the" used in this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to any or all possible combinations of one or more of the associated listed items.

[0025] The following describes in detail the specific implementation methods, features and effects of the present invention in conjunction with the accompanying drawings and preferred embodiments.

[0026] See also Figure 1-2 , an embodiment of the present application provides an explosion-proof battery pack, including an ER14500 battery 1, a forward diode 2, a reverse diode 3, a lithium supercapacitor 4, a current limiting resistor 5, a fuse 6 and a temperature fuse 7;

[0027] One of the ER14500 batteries 1 is connected in series with one of the forward diodes 2 in the forward direction to form a group of battery submodules;

[0028] The ten battery submodules are connected in parallel in pairs to form five battery modules;

[0029] The five lithium supercapacitors 4 are respectively connected in parallel in the five battery modules;

[0030] Connect the five battery modules connected in parallel with the lithium supercapacitor 4 in series through PCBA;

[0031] Furthermore, the five battery modules connected in series are connected in reverse parallel to the reverse diode 3 through PCBA;

[0032] The fuse 6 , the temperature fuse 7 and the current-limiting resistor 5 are connected to the positive lines of the five battery modules to form the explosion-proof battery pack.

[0033] Specifically, the above-mentioned new high-safety explosion-proof battery pack designed in this application can be used in flammable and explosive industries such as mining. It consists of two ER14500 batteries 1 connected in parallel to form a 1S2P ER14500 battery pack, and then five groups of 1S2P ER14500 battery packs are connected in series to form a 5S2P battery pack, thus forming a 5S2P ER14500 battery module assembly. This battery pack has strong safety performance and can provide a reliable, stable and safe driving power supply. Among them, "1S2P" and "5S2P" both represent the series-parallel configuration of battery packs, S represents series connection, and P represents parallel connection. "1S2P" means one single cell is connected in series and two groups of single-string batteries are connected in parallel; "5S2P" means five single cells are connected in series and two groups of series batteries are connected in parallel (five cells in each group are connected in series). In this application, in order to distinguish the series and parallel connections at different stages, the part formed by connecting an ER14500 battery 1 in forward series with a forward diode 2 is defined as a group of battery pack sub-modules, and there are ten such groups in total; the five 1S2P ER14500 battery packs formed by connecting the ten battery pack sub-modules in parallel are defined as five battery pack modules; the battery pack obtained by reverse-parallel connection of five reverse diodes 3 prepared additionally through PCBA and five 1S2P ER14500 battery packs is defined as a 5S2P ER14500 battery pack, that is, an explosion-proof battery pack.

[0034] It can be understood that the above-mentioned ER14500 battery 1 is a type of battery unique to the explosion-proof battery pack of the present application and is specifically used for the explosion-proof battery pack of the present application.

[0035] like Figure 3 As shown, the internal circuit structure of the above battery pack is as follows:

[0036] Step 1: Form a 1S2P ER14500 battery pack, including:

[0037] First, connect a diode in series with an ER14500 battery 1 in the forward direction, and prepare ten sets in total;

[0038] Then, ten groups of ER14500 batteries 1 and forward diodes 2 are connected in parallel in pairs to form five groups of 1S2PER14500 batteries;

[0039] Then use five Lithium Super Capacitor 4s and connect them in parallel to the five 1S2PER14500 battery packs prepared in the previous step;

[0040] Step 2: Form a 5S2P ER14500 battery pack. Specifically, connect five 1S2P ER142500 battery packs in series using PCBA, including:

[0041] Prepare the PCBA in advance and connect the five 1S2P ER14500 battery packs obtained by parallel connection of the Li-ion Super Capacitor 4 in series with soldering.

[0042] Then, through PCBA, the five additional reverse diodes 3 are connected in reverse parallel with the five 1S2P ER14500 battery packs to form a 5S2P ER14500 battery pack.

[0043] Step 3: Form a set of explosion-proof battery packs, specifically:

[0044] On the positive line of the total circuit of the 5S2P ER14500 battery pack, fuse 6, temperature fuse 7 and current limiting resistor 5 are connected respectively to form the final explosion-proof battery pack.

[0045] It should be noted that the above-mentioned PCBA refers to the printed circuit board assembly, which is the core hardware part of the battery management system (BMS) and is responsible for the monitoring, protection, balancing and communication functions of the battery pack, which specifically includes:

[0046] Circuit board: A basic board used to connect and support the various circuit components in the battery pack.

[0047] Electronic components: including resistors, capacitors, diodes, transistors, integrated circuits (ICs), etc., used to implement battery management, monitor battery status, and protect batteries from overcharging, over-discharging, and other problems.

[0048] Control system: such as the battery management system (BMS), which is used to monitor the battery voltage, current, temperature, etc. to ensure that the battery operates within a safe operating range.

[0049] In one embodiment provided in the present application, there are ten ER14500 batteries 1; there are ten forward diodes 2; and there are five reverse diodes 3.

[0050] Specifically, in the explosion-proof battery pack of the present application, there are ten ER14500 batteries 1, ten forward diodes 2, and five reverse diodes 3.

[0051] It should be noted that the forward diode 2 and the reverse diode 3 are both diodes, and the difference between the two is only the different connection methods, wherein the forward diode 2 is connected in series with the ER14500 battery 1 in the forward direction, while the reverse diode 3 is an additional diode prepared by reversely connecting the five battery modules in parallel with the five battery modules through PCBA after obtaining the five battery modules in series. Because both are diodes but their positions and connection methods are different, in order to effectively distinguish them, this application names them as forward diode 2 and reverse diode 3 respectively. It can be understood that the above naming is only for distinction and does not mean that there will be a difference in performance between the two (both are diodes and have the performance that a diode should have). However, due to the different connection methods of the two, there may be differences in the effects of the two on the battery pack, that is: the different connection methods and different positions of the two result in different effects on the battery pack.

[0052] In one embodiment provided in the present application, the positive electrode and the negative electrode are respectively protected by insulating barley paper between the battery modules connected in series.

[0053] Specifically, in the step of "connecting the five battery modules connected in parallel with the lithium supercapacitor 4 in series through PCBA", the positive and negative poles of the battery modules connected in series are isolated and protected by insulating barley paper to ensure the insulation of the battery pack.

[0054] In one embodiment provided in the present application, the explosion-proof battery pack is bound and fixed by a heat shrink film.

[0055] Specifically, restraining and fixing the battery pack with a heat shrink film can effectively ensure the safety performance of the battery pack.

[0056] In summary, the present application provides a battery pack that can provide high power and is suitable for flammable and explosive industries such as mining, with superior safety performance. In this explosion-proof battery pack, each battery (ER14500) is connected in series with a diode in the forward direction, and then connected in parallel to form a 1S2P ER14500 battery pack, and then a diode is connected in reverse parallel and a lithium supercapacitor is connected in forward parallel to the 1S2P ER14500 battery pack; a fuse, a current limiting resistor and a temperature fuse are also added to the total circuit of the explosion-proof battery pack, and PCBA is used for patching and welding batteries, so it has an excellent size and space arrangement design; and between the battery packs connected in series, the positive and negative poles are protected with insulating barley paper, and then the battery pack is fixed with heat shrink film, so that the battery pack has reliable insulation and safety performance.

[0057] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant description of other embodiments.

[0058] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as above in terms of a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can, without departing from the scope of the technical solution of the present invention, make some changes or modifications to equivalent embodiments using the technical contents disclosed above. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An explosion-proof battery pack, characterized in that: Includes ER14500 battery, forward diode, reverse diode, lithium supercapacitor, current limiting resistor, fuse and thermal cutoff; One of the ER14500 batteries is connected in series with one of the forward diodes in the forward direction to form a group of battery submodules; The ten battery submodules are connected in parallel in pairs to form five battery modules; The five lithium supercapacitors are respectively connected in parallel to the five battery modules; Connecting the five battery modules connected in parallel with the lithium supercapacitor in series through PCBA; Furthermore, the five battery modules connected in series are connected in reverse parallel to the reverse diodes through the PCBA; The fuse, the temperature fuse and the current-limiting resistor are connected to the positive lines of the five battery modules to form the explosion-proof battery pack.

2. The explosion-proof battery pack according to claim 1, characterized in that: There are ten ER14500 batteries; there are ten forward diodes; and there are five reverse diodes.

3. The explosion-proof battery pack according to claim 1, characterized in that: Between the battery modules connected in series, the positive and negative electrodes are protected by insulating barley paper.

4. The explosion-proof battery pack according to claim 1, characterized in that: The explosion-proof battery pack is bound and fixed by a heat shrink film.

Images