Battery pack

Abstract

The utility model relates to the technical field of batteries, in particular to a battery pack which comprises a battery cell and an outer shell used for wrapping the battery cell and capable of being inserted into an equipment installation cavity, and a positive electrode output terminal and a negative electrode output terminal which are used for being connected with insertion pieces in equipment are arranged in the outer shell. The outer shell is respectively provided with a positive electrode connecting port and a negative electrode connecting port, the positive electrode connecting port is used for connecting equipment with the positive electrode output terminal, the negative electrode connecting port is used for connecting the negative electrode output terminal, and the outer shell is also internally provided with a TYPE-C connector which is used for connecting low-power equipment. The outer shell is provided with a TYPE-C connector for exposing the TYPE-C connector, and one side, far away from the positive electrode connector and the negative electrode connector, of the outer shell is provided with a locking block for locking with equipment. The application has the effects that the battery pack supplies power to the low-power electric appliance in a low-electric-quantity state, and the utilization efficiency of the battery pack is improved.

Description

Technical Field

[0001] This application relates to the technical field of batteries, and particularly to a battery pack. Background Art

[0002] The energy storage density of lithium batteries can reach 460 - 600 Wh / kg, which is about 6 - 7 times that of traditional lead-acid batteries. Under the same weight or volume, lithium batteries can store more energy. The self-discharge rate of lithium batteries is relatively low, and they can maintain a relatively high power level even when not used for a long time. At the same time, lithium batteries support fast charging, which can greatly reduce the charging time and improve the usage efficiency. This characteristic makes lithium batteries have broad application prospects in fields such as electric vehicles and portable devices.

[0003] In the prior art, some electrical devices usually have at least one installation cavity for externally connecting a battery pack. Inside the device, there is a limiting block for preventing the battery pack from coming out. The battery pack is inserted into the installation cavity and forms a closed circuit with the device through positive and negative contact points to supply power to the device. When the battery pack has a low power level, the device will prompt the operator to remove it for charging.

[0004] In view of the above related technologies, although the remaining power of the battery pack is not sufficient to power the device for continuous operation, it can still provide residual value for low-power electrical appliances. Therefore, it is necessary to provide a multifunctional battery pack that can supply power to low-power electrical appliances in a low-power state. Summary of the Utility Model

[0005] In order to enable the battery pack to supply power to low-power electrical appliances in a low-power state and improve the utilization efficiency of the battery pack, this application provides a battery pack.

[0006] The battery pack provided by this application adopts the following technical solutions:

[0007] A battery pack includes a battery cell, a housing for wrapping the battery cell and capable of being inserted into the device installation cavity. Inside the housing, there are a positive output terminal and a negative output terminal for connecting with the inserts inside the device. On the housing, there are respectively a positive connection port for the device to connect with the positive output terminal and a negative connection port for connecting with the negative output terminal. Inside the housing, there is also a TYPE-C connector for connecting with low-power devices. On the housing, there is a TYPE-C connection port for the TYPE-C connector to be exposed. On one side of the housing away from the positive connection port and the negative connection port, there is a locking block for locking with the device.

[0008] By adopting the above technical solution, a TYPE-C connector and corresponding connection ports are added to the battery pack, enabling the battery pack to provide power for other low-power small electronic devices even when the battery power is low and insufficient to support the normal operation of the original device, making full use of the remaining power of the battery pack, increasing the usage scenarios of the battery pack, and enabling it to be no longer limited to single-device power supply, but capable of flexibly powering multiple devices according to different needs, thus improving the versatility and practicality of the battery pack. As a currently widely used charging and data transmission interface, the TYPE-C interface has high ease of use and popularity, making the connection between the battery pack and other devices more convenient and fast, without the need for additional adapters or conversion cables. The locking block on the outer shell can ensure the stability of the battery pack after it is inserted into the device installation cavity, preventing device power-off or damage caused by accidental detachment, and improving the safety and reliability of use.

[0009] Further, a PCBA control board is provided inside the housing, and the positive output terminal, the negative output terminal, and the TYPE-C connector are all mounted on the PCBA control board;

[0010] A charge and discharge control chip for connecting with the TYPE-C connector is also mounted on the PCBA control board.

[0011] By adopting the above technical solution, the PCBA control board, as the core control unit of the battery pack, can realize the intelligent management of various components inside the battery pack, monitor the power state of the battery pack, control the charge and discharge process, and protect the battery from overcharging, over-discharging and other damages, thereby extending the service life of the battery and improving safety. Installing a charge and discharge control chip on the PCBA control board can achieve voltage and current conversion. When the battery pack powers a low-power device through the TYPE-C connector, the charge and discharge control chip will monitor the input voltage and current and control the charging process. The voltage conversion is completed by the built-in DC-DC converter. The charge and discharge control chip can adjust the voltage and current output by the battery pack to an appropriate range according to the needs of the device, ensuring the stability and efficiency of power supply.

[0012] Further, an upper bracket and a lower bracket are respectively sleeved at both ends of the battery cell. The outer peripheral walls of the upper bracket and the lower bracket are in contact with the inner wall of the outer housing. On the side of the upper bracket away from the battery cell, there are support columns for supporting the PCBA control board and a limiting plate abutting against the side wall of the PCBA control board. The support columns and the limiting plate are arranged at intervals along the circumferential direction of the upper bracket.

[0013] By adopting the above technical solutions, the upper bracket and the lower bracket are respectively sleeved at both ends of the battery cell, and provide support for the battery cell by abutting against the inner wall of the housing, enhancing the stability of the internal structure of the battery pack, helping to reduce the vibration and shaking of the battery pack during use, and protecting the internal components. The support columns on the upper bracket provide stable support points for the PCBA control board, and the design of the limiting plate restricts the movement of the PCBA control board in the horizontal direction, preventing it from being displaced or loosened inside the battery pack, and ensuring the reliability and stability of the connection.

[0014] Further, a battery cell positive connection piece and a battery cell negative connection piece for abutting against the battery cell are respectively installed on both sides of the PCBA control board;

[0015] The battery cell positive connection piece has a positive plugging portion for being plugged on the PCBA control board, a positive abutting portion for abutting against the positive electrode of the battery cell, and a connection piece integrally connecting the plugging portion and the abutting portion. The battery cell negative connection piece has a negative plugging portion for being plugged on the PCBA control board and a negative abutting portion for abutting against the negative electrode of the battery cell;

[0016] On both sides of the PCBA control board, clamping grooves for plugging and clamping and fixing the positive plugging portion and the negative plugging portion are respectively provided.

[0017] By adopting the above technical solutions, the battery cell positive connection piece and the battery cell negative connection piece are plugged and fixed on the PCBA control board through the plugging portion and the clamping groove, simplifying the assembly process of the battery pack. The battery cell positive connection piece and the battery cell negative connection piece directly abut against the positive and negative electrodes of the battery cell, ensuring the stability and reliability of the electrical connection, also improving the current transmission efficiency, and avoiding heat accumulation and safety hazards caused by poor contact.

[0018] Further, the positive output terminal / the negative output terminal includes a base and a contact piece integrally connected to the base and used for abutting against the device insertion piece. The base is provided with a claw on the side away from the contact piece for being plugged on the PCBA control board.

[0019] By adopting the above technical solutions, the positive output terminal and the negative output terminal are plugged on the PCBA control board through the base and the claw, enhancing the connection stability between the output terminal and the PCBA control board, and ensuring the stability and safety of current transmission. The contact piece is directly used for abutting against the device insertion piece, ensuring the reliability and low resistance of the electrical connection, helping to reduce energy loss and heat accumulation, and improving the electrical performance and service life of the battery pack.

[0020] Furthermore, the outer casing includes an upper shell and a lower shell which are fixedly connected. The outer diameter of the lower shell is greater than that of the upper shell. A convex rib is provided on the outer peripheral wall of the upper shell near the lower shell, and a groove for the convex rib to be snapped into is provided on the inner peripheral wall of the lower shell. The locking block is integrally connected to the side of the lower shell close to the upper shell.

[0021] By adopting the above technical solution, the outer casing is divided into an upper shell and a lower shell, and a convex rib and a groove are provided at the connection part. The upper shell and the lower shell are tightly fixed through a snap-fit structure, enhancing the structural stability of the outer casing, effectively resisting external impacts and vibrations, and protecting the internal battery cell and circuit components from damage. The locking block is integrally connected to the side of the lower shell close to the upper shell, so that when the battery pack is inserted into the device installation cavity, it can cooperate with the limiting block in the device installation cavity to achieve a locking effect and prevent accidental detachment.

[0022] Furthermore, a ring plate is integrally connected to the side of the lower shell close to the upper shell. The locking block is integrally connected to the upper side of the ring plate. The number of the locking blocks is at least two and they are symmetrically arranged on both sides of the ring plate. The side walls of the two locking blocks are both in contact with the outer wall of the upper shell.

[0023] By adopting the above technical solution, the locking block is integrally connected to the lower shell through the ring plate. At least two symmetrically arranged locking blocks can be in contact with the outer wall of the upper shell at the same time to form multi-point locking, further enhancing the locking stability of the battery pack on the device. The multi-point locking mechanism effectively prevents the battery pack from accidentally detaching under vibration or impact, improving the safety of use. The symmetrically arranged locking blocks can evenly distribute the locking force on the outer wall of the upper shell, avoiding deformation or damage caused by excessive single-point force, prolonging the service life of the battery pack, and improving the reliability of its overall structure.

[0024] Furthermore, the locking block has a connecting part for connecting with the ring plate, a lateral limiting part and a longitudinal limiting part provided on the side of the connecting part away from the upper shell. The lateral limiting part is provided on the side of the connecting part away from the ring plate. The longitudinal limiting part is perpendicular to the lateral limiting part and is located at the edge of the connecting part. A limiting groove for the limiting block of the device to be snapped into is jointly formed among the lateral limiting part, the longitudinal limiting part and the connecting part.

[0025] By adopting the above technical solution, the lateral limiting part, the longitudinal limiting part and the connecting part jointly form a limiting groove, and the limiting groove can cooperate with the limiting block on the device to achieve a locking effect. After the battery pack is inserted into the installation cavity of the device, by rotating an angle, the limiting block is snapped into the limiting groove, thereby fixedly combining the battery pack with the machine, and rotating in the reverse direction can unlock and pull out the battery pack.

[0026] Furthermore, the thickness of the ring plate is less than that of the lower shell, and a step is formed between the ring plate and the lower shell. A ring groove is circumferentially provided on the step, and a sealing ring for abutting against the device is embedded in the ring groove.

[0027] By adopting the above technical solution, the sealing ring is embedded in the ring groove, and a sealing interface can be formed when contacting the device, preventing external impurities such as dust and moisture from entering the installation cavity of the device and improving the sealing performance. The step and the ring groove provide an accurate installation position for the sealing ring, ensuring the stability and reliability of the sealing ring, improving the installation accuracy between the battery pack and the device, and reducing problems such as looseness or leakage caused by improper fitting.

[0028] Furthermore, an ID identification terminal for identifying different cell types and capacities and an NTC signal terminal for identifying temperature control signals are also provided on the PCBA control board. On the side of the upper shell away from the lower shell, an ID identification port for the ID identification terminal to pass through and an NTC signal port for the NTC signal terminal to pass through are spaced apart.

[0029] By adopting the above technical solution, the ID identification terminal enables the battery pack to identify the types and capacities of different cells, enabling the same battery pack to be compatible with a variety of different specifications of cells, improving the compatibility and adaptability of the battery pack, enhancing the intelligent level of the battery pack, and providing the possibility for the intelligent management and control of the device. The NTC signal terminal enables the battery pack to monitor and identify temperature control signals in real time. By precisely controlling the temperature of the battery pack, thermal runaway and safety accidents caused by too high temperature can be prevented, the performance of the battery pack can be optimized, the use efficiency can be improved, and the safe operation of the battery pack can be ensured.

[0030] In summary, the present application includes at least one of the following beneficial technical effects:

[0031] 1. By adding a TYPE-C connector and corresponding connection ports, the battery pack is no longer limited to powering a single device, but can flexibly provide power for a variety of low-power small electronic devices, making full use of the remaining power of the battery pack, increasing the usage scenarios and flexibility. The wide application and ease of use of the TYPE-C interface make the connection between the battery pack and other devices more convenient and fast, without the need for additional adapters or conversion cables, improving the user experience;

[0032] 2. The charge and discharge control chip achieves precise conversion of voltage and current, ensuring stability and efficiency when powering low-power devices. As the core control unit, the PCBA control board can realize intelligent management of the components inside the battery pack, including power monitoring, charge and discharge control, overcharge and over-discharge protection, etc., extending the battery life and improving safety. The settings of the ID recognition terminal and the NTC signal terminal improve the intelligence level of the battery pack, enabling the battery pack to adapt to multiple types of battery cells and monitor the temperature in real time, optimizing the performance and usage efficiency;

[0033] 3. The snap-fit structure and locking block design of the outer casing ensure the stability of the battery pack on the device, preventing power failure or damage to the device caused by accidental detachment, and improving the safety and reliability of use. The upper bracket and the lower bracket provide stable support for the battery cells, reducing vibration and shaking during use and protecting the internal components. The sealing ring improves the sealing performance between the battery pack and the device, preventing external impurities from entering, and further enhancing the safety and durability of the battery pack. Description of the Drawings

[0034] Figure 1 is the overall structural schematic diagram of a battery pack according to an embodiment of the present application.

[0035] Figure 2 is the exploded structural schematic diagram of a battery pack according to an embodiment of the present application.

[0036] Figure 3 is the exploded structural schematic diagram of the outer casing in an embodiment of the present application.

[0037] Figure 4 is Figure 3 the enlarged structural schematic diagram of part A in

[0038] Figure 5 is the structural schematic diagram of the battery cell, upper bracket, lower bracket and PCBA control board in an embodiment of the present application.

[0039] Figure 6 is the structural schematic diagram of the upper bracket, lower bracket, PCBA control board, positive electrode connecting piece of the battery cell and negative electrode connecting piece of the battery cell in an embodiment of the present application.

[0040] Figure 7 is the structural schematic diagram of the positive output terminal / negative output terminal in an embodiment of the present application.

[0041] Description of reference numerals: 0, device; 01, installation cavity; 02, limit block; 1, battery cell; 11, upper bracket; 111, support column; 112, limit plate; 12, lower bracket; 2, outer shell; 21, upper shell; 211, positive electrode connection port; 212, negative electrode connection port; 213, TYPE-C connection port; 214, ridge; 215, ID identification port; 216, NTC signal port; 22, lower shell; 221, locking block; 2211, connecting portion; 2212, lateral limit portion; 2213, longitudinal limit portion; 2214, limit groove; 222 , groove; 223, ring plate; 224, step; 2241, ring groove; 225, sealing ring; 3, positive output terminal; 31, base; 32, contact piece; 33, claw; 4, negative output terminal; 5, TYPE-C connector; 6, PCBA control board; 61, card slot; 62, ID identification terminal; 63, NTC signal terminal; 7, charge and discharge control chip; 8, battery cell positive electrode connecting piece; 81, positive electrode plug-in part; 82, positive electrode abutment part; 83, connecting piece; 9, battery cell negative electrode connecting piece; 91, negative electrode plug-in part; 92, negative electrode abutment part. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solutions and advantages of this application more clear, the following Figure 1-7 And embodiments, the present application is further described in detail.

[0043] The present application embodiment discloses a battery pack. Figure 1 and Figure 2 The device 0 usually has one or more installation cavities 01 for installing a battery pack. The device 0 is provided with a limit block 02 in the installation cavity 01 for preventing the battery pack from falling out. In this embodiment, the number of the limit blocks 02 is two and they are symmetrically arranged on the inner wall of the device 0.

[0044] The battery pack includes a battery cell 1 and an outer shell 2 wrapped around the battery cell 1. The outer shell 2 includes an upper shell 21 and a lower shell 22. The diameter of the lower shell 22 is larger than that of the upper shell 21 so as to be installed on the upper shell 21. The upper shell 21 is integrally connected with a ridge 214 on the outer wall near the lower shell 22. The ridges 214 are symmetrically arranged on both sides of the upper shell 21. Figure 3 The inner wall of the lower shell 22 is symmetrically provided with grooves 222 for the convex ribs 214 to be inserted into, and the battery cell 1 is inserted into the upper shell 21 , and the upper shell 21 is fixedly connected between the lower shell 22 through the convex ribs 214 .

[0045] Reference Figure 2 and Figure 3, on one side of the lower case 22 close to the upper case 21, an annular plate 223 is integrally connected. The thickness of the annular plate 223 is less than that of the lower case 22. A step 224 is formed between the outer peripheral wall of the annular plate 223 and the upper side of the lower case 22. An annular groove 2241 is circumferentially provided on the step 224. A sealing ring 225 made of rubber material is embedded in the annular groove 2241. When the battery pack is inserted into the installation cavity 01, the sealing ring 225 can tightly press against each other between the lower case 22 and the device 0, thereby sealing the assembly gap to prevent water and dust.

[0046] Refer to Figure 3 and Figure 4 , two locking blocks 221 for cooperating with the limiting block 02 are symmetrically arranged and integrally connected on both sides of the annular plate 223. The locking block 221 has a connecting portion 2211 for integrally connecting with the annular plate 223, a transverse limiting portion 2212 and a longitudinal limiting portion 2213 integrally connected to the connecting portion 2211. When the upper case 21 is installed on the lower case 22, the connecting portion 2211 of the locking block 221 abuts against the upper case 21. The transverse limiting portion 2212 and the longitudinal limiting portion 2213 are perpendicular to each other and are both arranged on the side of the connecting portion 2211 away from the upper case 21. The transverse limiting portion 2212 is located on the side of the connecting portion 2211 away from the annular plate 223, and the longitudinal limiting portion 2213 is located at the edge position of the connecting portion 2211. A limiting groove 2214 is jointly formed among the transverse limiting portion 2212, the longitudinal limiting portion 2213 and the connecting portion 2211. After the battery pack is inserted into the installation cavity 01 of the device 0, by rotating a certain angle, the limiting block 02 is snapped into the limiting groove 2214, and the battery pack can be fixedly combined with the machine. Rotating in the reverse direction can unlock and pull out the battery pack.

[0047] Combined with Figure 5 and Figure 6 , upper brackets 11 and lower brackets 12 are respectively sleeved at both ends of the battery cell 1. A PCBA control board 6 is installed on the upper bracket 11. Support columns 111 and limiting plates 112 are vertically arranged and integrally connected on the side of the upper bracket 11 away from the battery cell 1. In this embodiment, the number of the support columns 111 and the limiting plates 112 is two each, and the support columns 111 and the limiting plates 112 are circumferentially arranged at intervals on the upper bracket 11. The support column 111 abuts against the bottom of the PCBA control board 6, and the limiting plate 112 abuts against the side wall of the PCBA control board 6 to fix the PCBA control board 6.

[0048] On the upper bracket 11, there are also a battery cell 1 positive connection piece 83 and a battery cell 1 negative connection piece 83 for abutting against the battery cell 1. Two clamping grooves 61 for installing the battery cell 1 positive connection piece 83 and the battery cell 1 negative connection piece 83 are respectively provided on the PCBA control board 6.

[0049] The positive connection piece 83 of the battery cell 1 has a positive plug-in part 81, a positive abutting part 82 and a connection piece 83. The positive plug-in part 81 is inserted into the clamping groove 61, the positive abutting part 82 is fixedly connected to the lower bracket 12, the connection piece 83 is integrally connected between the positive plug-in part 81 and the positive abutting part 82, and the connection piece 83 abuts against the upper bracket 11, the lower bracket 12 and the battery cell 1 respectively. The negative connection piece 83 of the battery cell 1 has a negative plug-in part 91 and a negative abutting part 92. The negative plug-in part 91 is inserted into the clamping groove 61, the negative abutting part 92 is fixedly connected to the upper bracket 11, and the positive abutting part 82 and the negative abutting part 92 abut against the positive and negative ends of the battery cell 1 respectively.

[0050] Referring to Figure 6 and Figure 7 , on the PCBA control board 6, a positive output terminal 3, a negative output terminal 4, a TYPE-C connector 5, a charge and discharge control chip 7, an ID recognition terminal 62 and an NTC signal terminal 63 are installed. The positive output terminal 3 / negative output terminal 4 has a base 31, a contact piece 32 and a claw 33 which are integrally connected. The base 31 is fixed to the PCBA control board 6 through the claw 33. In this embodiment, the number of contact pieces 32 is four and they are all arranged on the side of the base 31 away from the claw 33 for connecting with the insertion piece of the device 0. The positive output terminal 3 / negative output terminal 4 realizes the setting of a multi-contact structure through a plurality of contact pieces 32, thereby increasing the contact area with the insertion piece of the device 0 and bearing a larger discharge current, meeting the requirements of the high-performance battery cell 1.

[0051] The TYPE-C connector 5 is fixedly connected to the PCBA control board 6, so that the battery pack can still provide power for other low-power small electronic devices 0 in a low-battery state. The charge and discharge control chip 7 is fixedly connected to the PCBA control board 6 to realize the accurate conversion of voltage and current. When the battery pack supplies power to the low-power device 0 through the TYPE-C connector, the charge and discharge control chip 7 can adjust the voltage and current output by the battery pack to a suitable range according to the requirements of the device 0, ensuring the stability and efficiency of power supply.

[0052] Both the ID recognition terminal 62 and the NTC signal terminal 63 are fixedly connected to the PCBA control board 6. The ID recognition terminal 62 enables the battery pack to identify the types and capacities of different battery cells 1, so that the same battery pack can be adapted to a variety of different specifications of battery cells 1, improving the compatibility and adaptability of the battery pack, enhancing the intelligent level of the battery pack, and providing the possibility for the intelligent management and control of the device 0. The NTC signal terminal enables the battery pack to monitor and identify temperature control signals in real time, prevent thermal runaway and safety accidents caused by too high temperature through precise control of the battery pack temperature, optimize the performance of the battery pack, improve the use efficiency, and ensure the safe operation of the battery pack.

[0053] Combined withFigure 2 On the side of the upper shell 21 away from the lower shell 22, there are provided a TYPE-C connection port 213 for the TYPE-C connector 5 to pass through, a positive connection port 211 for the contact piece 32 of the positive output terminal 3 to pass through, a negative connection port 212 for the contact piece 32 of the negative output terminal 4 to pass through, an ID recognition port 215 for the ID recognition end 62 to pass through, and an NTC signal port 216 for the NTC signal end 63 to pass through.

[0054] The implementation principle of a battery pack in an embodiment of the present application is as follows: The outer shell 2 of the battery pack is composed of an upper shell 21 and a lower shell 22. The firm connection between the upper shell 21 and the lower shell 22 is realized through the clamping structure of the convex rib 214 and the groove 222, which simplifies the assembly process and improves the structural stability of the outer shell 2. On the side of the lower shell 22 close to the upper shell 21, there is an integrally connected ring plate 223. A step 224 is formed between the ring plate 223 and the lower shell 22. A sealing ring 225 is embedded in the annular groove 2241 opened on the step 224 to achieve the sealing between the battery pack and the device 0, prevent dust and moisture from entering, and improve the waterproof and dustproof performance. Two locking blocks 221 are symmetrically arranged on the ring plate 223. The locking blocks 221 have a connecting portion 2211, a lateral limiting portion 2212, and a longitudinal limiting portion 2213, which together form a limiting groove 2214. After the battery pack is inserted into the installation cavity 01 of the device 0, by rotating a certain angle, the limiting block 02 in the device 0 is snapped into the limiting groove 2214 to achieve the firm locking of the battery pack and the device 0 and prevent accidental detachment.

[0055] Upper brackets 11 and lower brackets 12 are respectively sleeved at both ends of the battery cell 1. A PCBA control board 6 is installed on the upper bracket 11 and fixed by support columns 111 and limiting plates 112. The positive connection piece 83 and the negative connection piece 83 of the battery cell 1 are respectively connected to the PCBA control board 6 and the battery cell 1 through plug-in portions and clamping grooves 61 to ensure the stability and reliability of the electrical connection. The PCBA control board 6, as the core control unit of the battery pack, integrates multiple functions. The ID recognition end 62 enables the battery pack to identify the types and capacities of different battery cells 1, improving compatibility and adaptability. The NTC signal end monitors the temperature of the battery pack in real time to prevent thermal runaway and safety accidents. When the battery pack is fully charged, it supplies power to the device 0 through the positive output terminal 3 and the negative output terminal 4. When the battery pack has a low power level, it can supply power to other low-power small electronic devices 0 through the TYPE-C connector. The charge and discharge control chip 7 accurately converts the voltage and current according to the requirements of the device 0 to ensure the stability and efficiency of the power supply.

[0056] The upper shell 21 is provided with a plurality of ports, including a TYPE-C connection port, a positive electrode connection port 211, a negative electrode connection port 212, an ID recognition port 215 and an NTC signal port, which are respectively used for connecting an external device 0, outputting electric power, identifying the type and capacity of the battery cell 1 and monitoring the temperature signal, so as to improve the practicability and convenience of the battery pack.

[0057] The above are all the preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A battery pack, comprising a battery cell (1), an outer shell (2) for wrapping the battery cell (1) and being insertable into a device installation cavity, the outer shell (2) being provided with a positive output terminal (3) and a negative output terminal (4) for connecting to a plug-in in the device, the outer shell (2) being provided with a positive connection port (211) for connecting the device to the positive output terminal (3) and a negative connection port (212) for connecting to the negative output terminal (4), characterized in that: A TYPE-C connector (5) for connecting to a low-power device is also provided in the outer shell (2); a TYPE-C connector (213) for exposing the TYPE-C connector (5) is provided on the outer shell (2); and a locking block (221) for locking with a device is provided on a side of the outer shell (2) away from the positive electrode connector (211) and the negative electrode connector (212).

2. A battery pack according to claim 1, characterized in that: A PCBA control board (6) is arranged in the housing, and the positive output terminal (3), the negative output terminal (4) and the TYPE-C connector (5) are all mounted on the PCBA control board (6); The PCBA control board (6) is also provided with a charge and discharge control chip (7) for connecting to the TYPE-C connector (5).

3. A battery pack according to claim 2, characterized in that: An upper bracket (11) and a lower bracket (12) are respectively sleeved on both ends of the battery cell (1); the outer peripheral walls of the upper bracket (11) and the lower bracket (12) are mutually abutted against the inner wall of the outer shell (2); the upper bracket (11) is provided with a support column (111) for supporting the PCBA control board (6) and a limit plate (112) abutting against the side wall of the PCBA control board (6) on a side away from the battery cell (1); the support column (111) and the limit plate (112) are arranged at intervals along the circumference direction of the upper bracket (11).

4. A battery pack according to claim 2, characterized in that: A battery cell positive electrode connecting piece (8) and a battery cell negative electrode connecting piece (9) for contacting the battery cell (1) are respectively installed on both sides of the PCBA control board (6); The battery cell positive electrode connecting piece (8) comprises a positive electrode plug-in portion (81) for being inserted into the PCBA control board (6), a positive electrode abutting portion (82) for abutting against the positive electrode of the battery cell (1), and a connecting piece (83) integrally connected between the positive electrode plug-in portion (81) and the positive electrode abutting portion (82); the battery cell negative electrode connecting piece (9) comprises a negative electrode plug-in portion (91) for being inserted into the PCBA control board (6), and a negative electrode abutting portion (92) for abutting against the negative electrode of the battery cell (1); The PCBA control board (6) is provided with clamping grooves (61) on both sides for the positive electrode plug-in portion (81) and the negative electrode plug-in portion (91) to be inserted and fixed.

5. A battery pack according to claim 2, characterized in that: The positive output terminal (3) / the negative output terminal (4) comprises a base (31) and a contact piece (32) integrally connected to the base (31) and used to abut against a device plug-in piece, and the base (31) is provided with a claw (33) for being plugged into the PCBA control board (6) on a side away from the contact piece (32).

6. A battery pack according to claim 3, characterized in that: The outer shell (2) comprises an upper shell (21) and a lower shell (22) which are fixedly connected, the outer diameter of the lower shell (22) being larger than the outer diameter of the upper shell (21), the upper shell (21) being provided with a ridge (214) on the outer peripheral wall on the side close to the lower shell (22), the inner peripheral wall of the lower shell (22) being provided with a groove (222) for the ridge (214) to be inserted, and the locking block (221) being integrally connected to the side of the lower shell (22) close to the upper shell (21).

7. A battery pack according to claim 6, characterized in that: The lower shell (22) is integrally connected with a ring plate (223) on one side close to the upper shell (21); the locking block (221) is integrally connected to the upper side of the ring plate (223); the number of the locking blocks (221) is at least two and they are symmetrically arranged on both sides of the ring plate (223); the side walls of the two locking blocks (221) are in contact with the outer wall of the upper shell (21).

8. A battery pack according to claim 7, characterized in that: The locking block (221) comprises a connecting portion (2211) for connecting with the ring plate (223), a transverse limiting portion (2212) and a longitudinal limiting portion (2213) which are arranged on a side of the connecting portion (2211) away from the upper shell (21); the transverse limiting portion (2212) is arranged on a side of the connecting portion (2211) away from the ring plate (223); the longitudinal limiting portion (2213) is perpendicular to the transverse limiting portion (2212) and is located at the edge of the connecting portion (2211); a limiting groove (2214) for the limiting block (02) of the device to be inserted is formed between the transverse limiting portion (2212), the longitudinal limiting portion (2213) and the connecting portion (2211).

9. A battery pack according to claim 8, characterized in that: The thickness of the ring plate (223) is less than the thickness of the lower shell (22) and a step (224) is formed between the ring plate (223) and the lower shell (22). An annular groove (2241) is provided circumferentially on the step (224), and a sealing ring (225) for contacting with equipment is embedded in the annular groove (2241).

10. A battery pack according to claim 6, characterized in that: The PCBA control board (6) is also provided with an ID identification terminal (62) for identifying the type and capacity of different battery cells (1) and an NTC signal terminal (63) for identifying a temperature control signal, and the upper shell (21) is provided with an ID identification port (215) for the ID identification terminal (62) to pass through and an NTC signal port (216) for the NTC signal terminal (63) to pass through, spaced apart on a side away from the lower shell (22).

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