A detachable lithium ion battery

Abstract

This utility model discloses a detachable lithium-ion battery, comprising: a casing, a battery cell, and a charging management board. The casing includes a bottom shell and a top cover. The bottom shell has a receiving groove, in which the battery cell is installed. The charging management board is installed in the receiving groove and has a charging connector. The bottom shell includes a bottom wall, a left side wall, a right side wall, a front side wall, and a rear side wall that enclose the receiving groove. The left side wall, the right side wall, and the front side wall together form a management board fitting area, which is fitted to the charging management board. The left side wall and the right side wall are respectively provided with a left latching part and a right latching part. The left and right ends of the charging management board respectively engage with the left and right latching parts and are confined to the bottom wall by the left and right latching parts. The top cover has a limiting post that extends vertically and its lower end abuts against the charging connector. With the above structure, the installation structure of the charging management board is simple, easy to assemble, and ensures the stability of the installation.

Description

Technical Field

[0001] This utility model relates to batteries, and more particularly to a removable lithium-ion battery. Background Technology

[0002] Existing removable lithium-ion batteries used in some products include a casing, battery cells, and a charging management board. The battery cells and the charging management board are housed inside the casing. The charging management board has a charging connector and is used to control the charging and discharging of the battery cells. In the prior art, the charging management board is generally fixed inside the casing with screws. However, the internal space of the aforementioned batteries is generally small, making the assembly of the charging management board cumbersome and affecting production efficiency. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a detachable lithium-ion battery with a simple installation structure for the charging management board, which is easy to assemble while ensuring stable installation.

[0004] A detachable lithium-ion battery according to an embodiment of the present invention includes: a shell, comprising a bottom shell and a top cover, wherein the bottom shell is provided with a receiving groove, the top cover is connected to the bottom shell and seals the opening of the receiving groove, and a connector hole is provided on the side wall of the bottom shell; a battery cell, installed in the receiving groove; and a charging management board, installed in the receiving groove, wherein the charging management board is provided with a charging connector, the charging connector being provided corresponding to the connector hole and exposed through the connector hole; wherein the bottom shell includes a bottom wall, a left side wall, a right side wall, a front side wall, and a rear side wall that surround and form the receiving groove, the left side wall, the right side wall, and the front side wall surrounding the receiving groove. The charging management board is adapted to and installed in the management board adaptation area. The left side wall and the right side wall are respectively provided with a left latching part and a right latching part. The left and right ends of the charging management board are respectively engaged with the left latching part and the right latching part, and are limited by the left latching part and the right latching part to be located on the bottom wall. The connector hole is opened on the front side wall. The charging connector is disposed on the upper side of the charging management board and located in the middle of the charging management board in the left and right direction. The cover is provided with a limiting post. The limiting post extends in the up and down direction and its lower end abuts against the charging connector.

[0005] According to an embodiment of the present invention, a detachable lithium-ion battery has at least the following advantages: In the battery described above, a charging management board is installed in the management board adaptation area, and both ends of the charging management board are fixed to the bottom shell through a left snap-fit ​​part and a right snap-fit ​​part. The face cover is provided with limiting posts, which press against the charging connector to limit and fix the middle part of the charging management board. By installing the charging management board through the above structure, no screws are required for fixing, the installation structure is simple, and the assembly is convenient. The left and right ends and the middle part of the charging management board are all limited and fixed, and the fixation is firm.

[0006] According to some embodiments of this utility model, it also includes a cell protection board, which is disposed on the cell and electrically connected to the cell. The cell protection board is provided with a charge / discharge protection chip and a temperature sensor. The temperature sensor is electrically connected to the charge / discharge protection chip. The charge / discharge protection chip is used to control the cell to stop charging and discharging when the temperature detected by the temperature sensor is higher than a predetermined high temperature value or lower than a predetermined low temperature value.

[0007] According to some embodiments of the present invention, the face cover is ultrasonically welded to the bottom shell, and the thickness of the bottom wall of the face cover and the bottom shell ranges from 0.4 mm to 0.5 mm.

[0008] According to some embodiments of the present invention, the lower side of the charging management board is provided with battery contacts, and the bottom wall of the bottom shell is provided with contact openings that correspond to the battery contacts and are adapted in shape. The battery contacts are inserted into the contact openings and exposed through the contact openings.

[0009] According to some embodiments of the present invention, a foolproof slot is provided on one end face of the outer shell.

[0010] According to some embodiments of the present invention, a label groove is provided on the end face of the outer shell.

[0011] According to some embodiments of the present invention, one end of the outer shell has a buckle.

[0012] According to some embodiments of the present invention, the outer casing is provided with an indicator light hole, the charging management board is provided with an indicator light, and the indicator light is provided in correspondence with the indicator light hole.

[0013] According to some embodiments of this utility model, the left and right card contacts are card protrusions, the left and right ends of the charging management board are located between the card protrusions and the bottom wall, and a guide slope is provided on the upper side of the card protrusions.

[0014] According to some embodiments of this utility model, the battery cell is provided with a mounting groove and a tab, the battery cell protection plate is provided in the mounting groove, the upper end surface of the battery cell protection plate is provided with a power receiving part, and the tab is folded upward and connected and fixed to the power receiving part.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a perspective view of an embodiment of the present utility model; Figure 2 This is an exploded view of an embodiment of the present invention; Figure 3 This is a perspective view of the faceplate according to an embodiment of the present utility model; Figure 4 This is a top view of an embodiment of the present invention after the faceplate has been removed; Figure 5 This is a cross-sectional view of an embodiment of the present utility model; Figure 6 This is a three-dimensional schematic diagram from the bottom side view of an embodiment of the present invention.

[0017] Figure label: Outer shell 100, bottom shell 110, front cover 120, receiving groove 130, connector hole 140, bottom wall 111, left side wall 112, right side wall 113, front side wall 114, rear side wall 115, left snap-fit ​​part 151, right snap-fit ​​part 152, limiting post 121, contact opening 160, anti-foolproof slot 170, label slot 180, handle part 190, indicator light hole 116; Battery cell 200, mounting slot 210, electrode tab 220; Charging management board 300, charging connector 310, battery contacts 320, indicator light 330; Cell protection board 400, power connection part 410. Detailed Implementation

[0018] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0019] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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 this utility model.

[0020] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0021] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0022] Reference Figures 1 to 6 A removable lithium-ion battery includes a housing 100, a battery cell 200, and a charging management board 300. The housing 100 includes a bottom shell 110 and a top cover 120. The bottom shell 110 has a receiving groove 130, and the top cover 120 is connected to the bottom shell 110 and seals the opening of the receiving groove 130. A connector hole 140 is provided on the side wall of the bottom shell 110. The battery cell 200 is installed in the receiving groove 130. The charging management board 300 is installed in the receiving groove 130 and is used to control the charging and discharging of the battery cell 200. The charging management board 300 has a charging connector 310, which is positioned corresponding to the connector hole 140 and exposed through the connector hole 140. The bottom shell 110 includes a bottom wall 111, a left side wall 112, a right side wall 113, a front side wall 114, and a rear side wall 115 that enclose and form a receiving groove 130. The left side wall 112, the right side wall 113, and the front side wall 114 enclose and form a management board adaptation area. The charging management board 300 is adapted to and installed in the management board adaptation area. The left side wall 112 and the right side wall 113 are respectively provided with a left latching part 151 and a right latching part 152 for charging. The left and right ends of the management board 300 are respectively engaged with the left latching part 151 and the right latching part 152, and are limited by the left latching part 151 and the right latching part 152 to the bottom wall 111. The connector hole 140 is opened on the front side wall 114. The charging connector 310 is disposed on the upper side of the charging management board 300 and is located in the middle of the charging management board 300 in the left and right direction. The cover 120 is provided with a limiting post 121, which extends in the up and down direction and abuts against the charging connector 310 at its lower end.

[0023] The aforementioned battery has a charging management board 300 installed in the management board adapter area. The two ends of the charging management board 300 are fixed to the bottom shell 110 through the left snap-fit ​​part 151 and the right snap-fit ​​part 152. The face cover 120 is provided with a limiting post 121, which presses against the charging connector 310 to limit and fix the middle part of the charging management board 300. The charging management board 300 is installed and set by the above structure without the need for screw fixing. The installation structure is simple and the assembly is convenient. The left and right ends and the middle part of the charging management board 300 are all limited and fixed, and the fixation is firm.

[0024] In this embodiment, the battery cell 200 is located on the rear side of the charging management board 300 and is arranged side by side with the charging management board 300.

[0025] In this embodiment, a cell protection board 400 is also included. The cell protection board 400 is disposed on and electrically connected to the cell 200. The cell protection board 400 is provided with a charge / discharge protection chip and a temperature sensor. The temperature sensor is electrically connected to the charge / discharge protection chip. The charge / discharge protection chip is used to control the cell 200 to stop charging and discharging when the temperature detected by the temperature sensor is higher than a predetermined high temperature value or lower than a predetermined low temperature value. Using the above structure, high and low temperatures can be detected by the temperature sensor during battery charging and discharging. When the temperature exceeds the limit, the cell 200 can be controlled to stop charging and discharging, thereby protecting the battery and improving product safety performance. In this embodiment, the charge / discharge protection chip can be an existing temperature control protection chip, which can be configured as needed. In this embodiment, the predetermined high temperature value and predetermined low temperature value can be specifically set according to the temperature performance curve of the cell. In this embodiment, the charging management board 300 can be electrically connected to the cell 200 through the cell protection board 400.

[0026] In this embodiment, the charging connector 310 may be a TYPE-C or Micro USB, etc.

[0027] In this embodiment, the faceplate 120 is ultrasonically welded to the bottom shell 110, and the thickness of the bottom wall 111 of both the faceplate 120 and the bottom shell 110 ranges from 0.4 mm to 0.5 mm. Using the above-described structure, which employs ultrasonic welding, the need for screw studs for fixation can be avoided. Furthermore, controlling the thickness of the bottom wall 111 of the faceplate 120 and the bottom shell 110 allows for sufficient dimensional space for the battery cell 200, thereby improving battery capacity. In this embodiment, the bottom shell 110 and the faceplate 120 can be molded using a high-speed injection molding machine.

[0028] In this embodiment, the lower side panel of the charging management board 300 is provided with battery contacts 320, and the bottom wall 111 of the bottom shell 110 has contact openings 160 that correspond to and are shaped to the battery contacts 320. The battery contacts 320 are inserted into the contact openings 160 and exposed through them. The battery contacts 320 can be used for input / output connections for charging and discharging. With the above structure, the battery contacts 320 are located at the bottom and can be directly connected to the horizontal connector of the product, thus eliminating the need for traditional vertical connectors and allowing the product to be made thinner. In addition, the structure of the battery contacts 320 being inserted into the contact openings 160 can also help to position the charging management board 300, ensuring accurate and stable installation. In this embodiment, there are three battery contacts 320, and three corresponding contact openings 160.

[0029] In one embodiment, a foolproof slot 170 is provided on one end face of the housing 100 to prevent users from assembling the battery incorrectly.

[0030] In this embodiment, the end face of the outer shell 100 is provided with a label groove 180, which facilitates labeling or laser engraving of relevant parameters.

[0031] In one embodiment, a handle 190 extends from one end of the housing 100, thereby facilitating the installation and removal of the battery on the product.

[0032] In this embodiment, the housing 100 has an indicator light hole 116, and the charging management board 300 is provided with an indicator light 330, which is correspondingly arranged with the indicator light hole 116. The charging status can be indicated by the indicator light 330, which is convenient for users.

[0033] In this embodiment, the left latching portion 151 and the right latching portion 152 are latching protrusions. The left and right ends of the charging management board 300 are confined between the latching protrusions and the bottom wall 111, and a guide slope is provided on the upper side of the latching protrusions. With the above structure, the charging management board 300 can be easily installed.

[0034] In this embodiment, the battery cell 200 is provided with a mounting groove 210 and a tab 220. The battery cell protection board 400 is disposed in the mounting groove 210, and a power receiving part 410 is provided on the upper end surface of the battery cell protection board 400. The tab 220 is folded upward and connected and fixed to the power receiving part 410. With the above structure, the overall structure of the battery cell 200 and the battery cell protection board 400 is compact and saves space.

[0035] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0036] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A removable lithium-ion battery, characterized in that, include: The outer shell (100) includes a bottom shell (110) and a front cover (120). The bottom shell (110) is provided with a receiving groove (130). The front cover (120) is connected to the bottom shell (110) and covers the opening of the receiving groove (130). The side wall of the bottom shell (110) is provided with a connector hole (140). The battery cell (200) is installed in the receiving slot (130); A charging management board (300) is installed in the receiving slot (130). The charging management board (300) is provided with a charging connector (310). The charging connector (310) is provided corresponding to the connector hole (140) and exposed through the connector hole (140). The bottom shell (110) includes a bottom wall (111), a left side wall (112), a right side wall (113), a front side wall (114), and a rear side wall (115) that enclose the receiving groove (130). The left side wall (112), the right side wall (113), and the front side wall (114) together form a management board adaptation area. The charging management board (300) is adapted to and installed in the management board adaptation area. The left side wall (112) and the right side wall (113) are respectively provided with a left latching part (151) and a right latching part (152). The left and right ends of the plate (300) respectively cooperate with the left snap-fit ​​part (151) and the right snap-fit ​​part (152), and are limited by the left snap-fit ​​part (151) and the right snap-fit ​​part (152) to be located on the bottom wall (111). The connector hole (140) is opened on the front side wall (114). The charging connector (310) is disposed on the upper side of the charging management plate (300) and located in the middle of the charging management plate (300) in the left and right direction. The cover (120) is provided with a limiting post (121). The limiting post (121) extends in the up and down direction and its lower end abuts against the charging connector (310).

2. The removable lithium-ion battery according to claim 1, characterized in that: It also includes a cell protection board (400), which is disposed on the cell (200) and electrically connected to the cell (200). The cell protection board (400) is provided with a charge-discharge protection chip and a temperature sensor. The temperature sensor is electrically connected to the charge-discharge protection chip. The charge-discharge protection chip is used to control the cell (200) to stop charging and discharging when the temperature detected by the temperature sensor is higher than a predetermined high temperature value or lower than a predetermined low temperature value.

3. The removable lithium-ion battery according to claim 1, characterized in that: The faceplate (120) is ultrasonically welded to the bottom shell (110), and the thickness of the bottom wall (111) of the faceplate (120) and the bottom shell (110) ranges from 0.4 mm to 0.5 mm.

4. The removable lithium-ion battery according to claim 1, characterized in that: The lower side panel of the charging management board (300) is provided with battery contacts (320). The bottom wall (111) of the bottom shell (110) is provided with contact openings (160) that correspond to the battery contacts (320) and are adapted in shape. The battery contacts (320) are inserted into the contact openings (160) and exposed through the contact openings (160).

5. The removable lithium-ion battery according to claim 1, characterized in that: One end face of the housing (100) is provided with a foolproof slot (170).

6. The removable lithium-ion battery according to claim 1, characterized in that: The end face of the outer shell (100) is provided with a label groove (180).

7. The removable lithium-ion battery according to claim 1, characterized in that: One end of the outer casing (100) has a buckle (190) extending out.

8. The removable lithium-ion battery according to claim 1, characterized in that: The outer casing (100) has an indicator light hole (116), and the charging management board (300) is provided with an indicator light (330), which is correspondingly provided with the indicator light hole (116).

9. The removable lithium-ion battery according to claim 1, characterized in that: The left card connector (151) and the right card connector (152) are card protrusions. The left and right ends of the charging management board (300) are located between the card protrusions and the bottom wall (111). A guide slope is provided on the upper side of the card protrusions.

10. The removable lithium-ion battery according to claim 2, characterized in that: The battery cell (200) is provided with a mounting groove (210) and a tab (220). The battery cell protection plate (400) is provided in the mounting groove (210). The upper end surface of the battery cell protection plate (400) is provided with a power receiving part (410). The tab (220) is folded upward and connected and fixed to the power receiving part (410).

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