Battery pack convenient to install

Abstract

The utility model discloses a battery pack convenient to install, which belongs to the technical field of batteries, solves the problem that the existing temperature sensor is poorer in installation consistency, and adopts the technical scheme that the battery pack mainly comprises a shell and a plurality of battery cells, the shell comprises an upper shell and a lower shell, the battery pack comprises an upper shell and a lower shell, the upper shell and the lower shell define a mounting space for mounting a plurality of battery cells, the plurality of battery cells are arranged at intervals to form a vertically through accommodating space, the battery pack further comprises a PCB and an auxiliary mounting part arranged on the upper shell, a temperature sensor for detecting the temperature of the battery pack is fixed on the PCB in advance, and the auxiliary mounting part is arranged on the PCB. A positioning hole which corresponds to and is communicated with the accommodating space is formed in the auxiliary mounting part, and the PCB penetrates through the positioning hole so as to mount the temperature sensor to a target position in the accommodating space. The mounting structure is mainly used for effectively improving the mounting consistency of the temperature sensor, so that the temperature sensor can more accurately monitor the temperature of a target position of the battery pack.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a battery pack which is easy to install. Background Art

[0002] In the prior art, for example, the invention patent CN115882168A discloses a sensor pin, a battery system, an electric vehicle, and a method for installing a temperature sensor, comprising a plurality of cylindrical battery cells arranged in an array, with gaps between adjacent battery cells, and a sensor pin, the sensor pin comprising a pin head, a pin insertion portion extending from the pin head into the gap, and at least one temperature sensor, wherein the pin insertion portion is deformed by the adjacent battery cell when inserted into the gap, so that it presses the temperature sensor against at least one of the battery cells in the gap. However, during manual installation, the pin insertion portion lacks positioning during the insertion into the gap, resulting in different installation positions of the temperature sensors of different battery packs, poor installation consistency, and the inability of the temperature sensor to monitor the temperature of the target position of the battery pack. Utility Model Content

[0003] The purpose to be achieved by the utility model is to provide a battery pack that is easy to install, which solves the problem of poor installation consistency of existing temperature sensors and effectively improves the installation consistency of temperature sensors.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a battery pack that is easy to install, including a shell and multiple battery cells, the shell including an upper shell and a lower shell, the upper shell and the lower shell define an installation space for installing multiple battery cells, the multiple battery cells are arranged at intervals to form a storage space that passes through from top to bottom, the battery pack also includes a PCB board and an auxiliary mounting part provided on the upper shell, a temperature sensor for detecting the temperature of the battery pack is pre-fixed on the PCB board, a positioning hole corresponding to and connected to the storage space is opened on the auxiliary mounting part, and the PCB board is set through the positioning hole to install the temperature sensor to the target position in the storage space.

[0005] After adopting the above technical scheme, the utility model has the following advantages: since the temperature sensor is usually a soft structure, a temperature sensor for detecting the temperature of the battery pack is pre-fixed on the PCB board, and a positioning hole corresponding to and connected to the accommodating space is opened on the auxiliary mounting part. During installation, the temperature sensor is installed to the target position in the accommodating space by passing through the positioning hole with the help of the PCB board. The PCB board can facilitate the installation of the temperature sensor in the battery pack, making the installation more convenient. The positioning hole can improve the installation accuracy of the PCB board, and accordingly, improve the installation consistency of the temperature sensor in the battery pack, which is conducive to the temperature sensor to more accurately monitor the temperature of the target position of the battery pack.

[0006] Furthermore, a movable gap is left between the PCB board and the battery cell.

[0007] By adopting the above-mentioned technical solution and setting the movable gap, the PCB board will not come into contact with the battery cell during installation, so that the PCB board can be more smoothly installed in the accommodation space, and the damage of the PCB board to the battery cell can be reduced.

[0008] Furthermore, the lower shell is provided with a mounting groove corresponding to the positioning hole, and the front end of the PCB board is inserted into the positioning hole and fixed with the mounting groove; and, one of the upper shell and the rear end of the PCB board is provided with a card slot, and the other of the upper shell and the rear end of the PCB board is provided with a buckle matching with the card slot, and when the front end of the PCB board is fixed with the mounting groove, the buckle is buckled with the card slot.

[0009] By adopting the above-mentioned technical solution, the self-positioning holes and the mounting slots are fixed together, which can effectively reduce the errors in the assembly process, further improve the installation position accuracy of the PCB board, and further improve the installation consistency of the temperature sensor in the battery pack; and, through the design of the buckle and the slot, additional fixing support can be provided on the basis of fixing the head end of the PCB board to the mounting slot, thereby enhancing the stability and reliability of the PCB board installation.

[0010] Furthermore, the lower shell is provided with a supporting boss protruding upward, and the mounting groove is located at the top of the supporting boss.

[0011] By adopting the above technical solution, by providing a supporting boss, after the first end of the PCB board is installed in the installation groove, the PCB board can be supported instead of being suspended, so that the installation of the PCB board is more reliable.

[0012] Furthermore, the multiple battery cells are arranged in an array below the upper shell, and the auxiliary mounting member is located in the middle position of the upper shell, so that the PCB board can be installed in the middle position between the multiple battery cells.

[0013] By adopting the above-mentioned technical solution, since the temperature rise of the battery pack during charging and discharging is mainly concentrated in the middle position between multiple battery cells, the auxiliary mounting part is located in the middle position of the upper shell so that the PCB board can be installed in the middle position between multiple battery cells, so that the temperature sensor can monitor the temperature in the middle position between multiple battery cells.

[0014] Furthermore, a plurality of positioning holes are arranged at intervals on the auxiliary mounting member, and the PCB board is installed in different positioning holes on the auxiliary mounting member so that the temperature sensor detects the temperature at different positions of the battery cell.

[0015] By adopting the above technical solution, since a plurality of positioning holes are provided on the auxiliary mounting parts, the mounting holes into which the PCB board is installed can be flexibly adjusted as needed, thereby adjusting the position of the temperature sensor in the battery pack, and monitoring the temperatures at different positions of the battery cells, so as to monitor the highest temperature position of the battery pack.

[0016] Furthermore, the PCB board is a long strip structure, and the temperature sensor can be fixed at different heights of the PCB board to detect the temperature of the battery cell at different heights.

[0017] By adopting the above technical solution, the position of the temperature sensor on the PCB board can be adjusted according to the structure and layout requirements of the battery pack so as to monitor the highest temperature position of the battery pack.

[0018] Furthermore, one temperature sensor is provided, and the one temperature sensor is fixed on the PCB board at a position at the middle height of the battery cell to detect the temperature at the middle height of the battery cell.

[0019] By adopting the above technical solution, since the temperature rise of the battery pack during charging and discharging is mainly concentrated at the middle height of the battery cell, the temperature sensor is fixed on the PCB board at the middle height of the battery cell, so that the temperature sensor can monitor the temperature at the middle height of the battery cell.

[0020] Furthermore, the temperature sensor and PCB board are each provided with multiple ones, and the multiple PCB boards are installed in different positioning holes on the auxiliary mounting member. The multiple temperature sensors can be fixed on different PCB boards to detect the temperature at different positions of the battery cell.

[0021] By adopting the above technical solution, since the auxiliary mounting piece is provided with a plurality of positioning holes at intervals, by arranging a plurality of PCB boards to be loaded into different positioning holes on the auxiliary mounting piece, the temperature sensor on the PCB board can be set at the position of the highest temperature of the local battery cell and the position of the highest temperature of the overall battery cell, so as to more comprehensively monitor the temperature of the battery pack.

[0022] Furthermore, the temperature sensor includes an external wire, and the auxiliary mounting piece is provided with a through hole for the external wire to pass through.

[0023] By adopting the above technical solution, through the design of the through hole, the external wire can be easily passed through the auxiliary installation part, which is convenient for connection with other equipment or circuits, and can also make the wiring more reasonable and more beautiful. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The utility model is further described below in conjunction with the accompanying drawings:

[0025] Figure 1 This is a schematic diagram of the structure of a battery pack that is easy to install according to the utility model;

[0026] Figure 2 A cross-sectional view of a battery pack that is easy to install according to the utility model;

[0027] Figure 3 A cross-sectional view of the battery pack of the utility model that is easy to install from another perspective;

[0028] Figure 4 This is a schematic diagram of the structure of the PCB board and the temperature sensor of the utility model;

[0029] In the figure, 10, battery cell; 20, upper shell; 201, protrusion; 21, lower shell; 211, mounting groove; 212, supporting boss; 22, mounting space; 23, accommodating space; 24, movable gap; 30, PCB board; 40, auxiliary mounting part; 401, positioning hole; 402, fixing hole; 50, temperature sensor; 51, external wire. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.

[0031] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described herein can be implemented in an order other than those illustrated or described herein.

[0032] It should be understood that in various embodiments of the present invention, the size of the serial number of each process does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

[0033] It should be understood that in the present invention, "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0034] It should be understood that in the present utility model, "plurality" refers to two or more than two. "And / or" is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, X and / or Y can represent: X exists alone, X and Y exist at the same time, and Y exists alone. The character " / " generally indicates that the objects associated before and after are in an "or" relationship. "Contains X, Y and Z", "Contains X, Y, Z" means that X, Y, and Z are all included, "Contains X, Y or Z" means that one of X, Y, and Z is included, and "Contains X, Y and / or Z" means that any one, any two, or any three of X, Y, and Z are included.

[0035] The following specific embodiments are used to describe the technical solution of the utility model in detail. The following specific embodiments can be combined or replaced with each other according to actual conditions, and the same or similar concepts or processes may not be described in detail in some embodiments.

[0036] like Figures 1 to 4 As shown, the utility model provides a battery pack that is easy to install, including a shell and a plurality of battery cells 10, the shell including an upper shell 20 and a lower shell 21, the upper shell 20 and the lower shell 21 define an installation space 22 for installing the plurality of battery cells 10, the plurality of battery cells 10 are arranged at intervals to form an accommodation space 23 that passes through from top to bottom, the battery pack also includes a PCB board 30 and an auxiliary mounting member 40 provided on the upper shell 20, a temperature sensor 50 for detecting the temperature of the battery pack is pre-fixed on the PCB board 30, and a positioning hole 401 corresponding to and connected to the accommodation space 23 is opened on the auxiliary mounting member 40, since the temperature sensor 50 is usually a soft structure, the temperature sensor 50 is installed in the accommodation space 23 by passing through the positioning hole 401 with the help of the PCB board 30, the PCB board 30 can facilitate the temperature sensor 50 to be installed in the target position in the battery pack, and the installation is more convenient, the positioning hole 401 can improve the installation accuracy of the PCB board 30, and accordingly, improve the installation consistency of the temperature sensor 50 in the battery pack, so as to facilitate the temperature sensor 50 to more accurately monitor the temperature of the target position of the battery pack.

[0037] It should be noted that a through hole connecting the positioning hole 401 and the accommodating space 23 is provided on the upper shell 20 .

[0038] Specifically, the temperature sensor 50 includes a main body and an external wire 51. The auxiliary mounting part 40 is provided with a through hole for the external wire 51 to pass through. The external wire 51 can easily pass through the auxiliary mounting part 40, which is convenient for connection with other devices or circuits, and can also make the wiring more reasonable and more beautiful.

[0039] In order to prevent the auxiliary mounting part 40 from being displaced and causing the positioning hole 401 to be misaligned with the accommodating space 23, the upper shell 20 is provided with a protrusion 201, and the auxiliary mounting part 40 is provided with a fixing hole 402 that is plugged into and matched with the protrusion 201. The auxiliary mounting part 40 can be installed on the battery pack through the plug-in design of the protrusion 201 and the fixing hole 402, ensuring that the connection between the auxiliary mounting part 40 and the upper shell 20 is more firm and stable, avoiding loosening or falling off during use. The design of the protrusion 201 and the fixing hole 402 makes the installation process simpler and quicker, without the need for additional tools or fixings, thereby improving assembly efficiency and convenience.

[0040] It can be understood that in other embodiments, the auxiliary mounting member may also be provided with a protrusion, and the upper shell may be provided with a fixing hole.

[0041] In order to prevent the PCB board 30 from contacting the battery cell 10 when being installed into the accommodation space 23, a movable gap 24 is left between the PCB board 30 and the battery cell 10, so that the PCB board 30 will not contact the battery cell 10 during the installation process, so that the PCB board 30 can be more smoothly installed into the accommodation space 23, and the damage to the battery cell 10 caused by the PCB board 30 can also be reduced.

[0042] Since there is a movable gap 24 between the PCB board 30 and the battery cell 10, in order to prevent the PCB board 30 from shifting during vibration or transportation, the lower shell 21 is provided with a mounting groove 211 corresponding to the positioning hole 401. During installation, the front end of the PCB board 30 is inserted into the positioning hole 401 and fixed in the mounting groove 211. The steps are simpler, which can effectively improve the reliability of the installation of the PCB board 30, and effectively reduce the error in the assembly process, further improve the installation position accuracy of the PCB board 30, and further improve the installation consistency of the temperature sensor 50 in the battery pack.

[0043] Since the height of the PCB board 30 may be smaller than the battery cell 10, the lower shell 21 is provided with a supporting boss 212 that protrudes upward 201, and the mounting groove 211 is located at the top of the supporting boss 212, so that after the first end of the PCB board 30 is installed in the mounting groove 211, the PCB board 30 can be supported instead of being suspended, so that the PCB board 30 can be installed more reliably.

[0044] Furthermore, the upper housing 20 is provided with a card slot, and the rear end of the PCB board 30 is provided with a buckle that matches the card slot. When the head end of the PCB board 30 is fixed with the mounting slot 211, the buckle is buckled with the card slot, and fewer installation steps are required. When disassembling, after the buckle is removed from the card slot, the PCB board 30 is moved upward to separate the head end of the PCB board 30 from the mounting slot 211, making it easier to disassemble the PCB board 30.

[0045] It can be understood that in other embodiments, the upper shell may also be provided with a buckle, and the rear end of the PCB board may be provided with a slot to achieve fixation between the PCB board and the upper shell.

[0046] Among them, multiple battery cells 10 are arranged in an array below the upper shell 20, such as a 6*7 battery cell 10 arrangement, a 6*6 battery cell 10 arrangement, etc., and the middle position can be the position between four battery cells 10 in the third row and third column, the third row and fourth column, the fourth row and third column, and the fourth row and fourth column. In the case where there is no special heat dissipation channel to dissipate heat from the middle, the heat conduction path in the middle position is long and the temperature is often the highest; if there is an intermediate heat dissipation channel to dissipate heat for multiple groups of battery cells 10, the highest temperature area between the local area battery cells 10 formed by each group of battery cells 10 is also the middle position of the group of battery cells 10, that is, the target position where the temperature sensor 50 needs to be checked and installed.

[0047] In order to facilitate monitoring the temperature of different positions of the battery cell 10, the auxiliary mounting member 40 is a long strip structure, and a plurality of positioning holes 401 are arranged at intervals on the auxiliary mounting member 40. The PCB board 30 is installed in different positioning holes 401 on the auxiliary mounting member 40 so that the temperature sensor 50 detects the temperature of different positions of the battery cell 10. Therefore, the temperature of different positions of the battery cell 10 can be monitored by adjusting the position of the temperature sensor 50 in the battery pack, so as to monitor the highest temperature position of the battery cell 10.

[0048] It should be noted that the auxiliary mounting member 40 can be a strip-shaped mounting plate. Of course, the auxiliary mounting member 40 can also be a rod-shaped mounting rod, but is not limited thereto.

[0049] In order to detect the highest temperature position of the battery cell 10, preferably, the auxiliary mounting member 40 is located in the middle position of the upper shell 20 so that the PCB board 30 can be installed in the middle position between multiple battery cells 10, so that the temperature sensor 50 can monitor the temperature of the middle position between the battery cells 10.

[0050] Then, in order to monitor the temperature at different heights of the battery cell 10, the PCB board 30 is a long strip structure, and the temperature sensor 50 can be fixed at different heights of the PCB board 30 to detect the temperature at different heights of the battery cell 10. According to the structure and layout requirements of the battery pack, the position of the temperature sensor 50 on the PCB board 30 can be adjusted to monitor the highest temperature position of the battery cell 10.

[0051] Specifically, in one embodiment, a temperature sensor 50 is provided, and a temperature sensor 50 is fixed on the PCB board 30 at a position at the middle height of the battery cell 10 to detect the temperature at the middle height of the battery cell 10, so that the temperature sensor 50 can monitor the temperature at the middle height of the battery cell 10.

[0052] In another embodiment, multiple temperature sensors 50 and PCB boards are provided, and multiple PCB boards 30 are installed in different positioning holes 401 on the auxiliary mounting part 40. Multiple temperature sensors 50 can be fixed on different PCB boards 30, and then the position of the temperature sensor 50 on the PCB board 30 is adjusted so that the temperature sensor 50 can monitor the position of the highest temperature of the local battery cell 10 and the position of the highest temperature of the entire battery cell 10, so as to more comprehensively monitor the temperature of the battery cell 10.

[0053] It should be noted that a plurality of temperature sensors 50 may also be disposed at different heights on a PCB board to monitor the temperatures of the battery cells 10 at different heights.

[0054] It is understandable that the number of PCB boards can be two, three or other suitable numbers.

[0055] It is understandable that the number of PCB boards can be two, three or other suitable numbers.

[0056] During installation, the temperature sensor 50 is installed in the following steps: first, the temperature sensor 50 is fixed at the target height of the PCB board 30 according to the target position of the battery pack to be detected, and at the same time, the auxiliary mounting member 40 is installed on the upper housing 20. Then, according to the target position of the battery pack to be detected, the PCB board 30 is inserted into the corresponding positioning hole 401 until the front end of the PCB board 30 enters the card slot and the PCB board 30 is stopped from being pushed. At this time, the buckle of the upper housing 20 fixes the rear end of the PCB board 30, and the temperature sensor 50 detects the temperature of the target height of the battery cell 10 at the target position of the battery pack.

[0057] In addition to the above-mentioned preferred embodiments, the present invention also has other implementation modes. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work are within the scope of protection requested by the present invention.

Claims

1. A battery pack that is easy to install, comprising a housing and a plurality of battery cells (10), wherein the housing comprises an upper housing (20) and a lower housing (21), wherein the upper housing (20) and the lower housing (21) define an installation space (22) for installing the plurality of battery cells, and wherein the plurality of battery cells (10) are arranged at intervals to form an accommodation space (23) that passes through from top to bottom, wherein: The battery pack further comprises a PCB board (30) and an auxiliary mounting member (40) arranged on the upper shell (20); a temperature sensor (50) for detecting the temperature of the battery pack is pre-fixed on the PCB board (30); a positioning hole (401) corresponding to and communicating with the accommodation space (23) is opened on the auxiliary mounting member (40); the PCB board (30) passes through the positioning hole (401) so as to install the temperature sensor (50) to a target position in the accommodation space (23).

2. The battery pack that is easy to install according to claim 1, characterized in that: A movable gap (24) is left between the PCB board (30) and the battery core (10).

3. The battery pack that is easy to install according to claim 1, characterized in that: The lower shell (21) is provided with a mounting groove (211) corresponding to the positioning hole (401), and the front end of the PCB board (30) is inserted into the positioning hole (401) and fixed in cooperation with the mounting groove (211); and one of the rear ends of the upper shell (20) and the PCB board (30) is provided with a card slot, and the other of the upper shell (20) and the rear end of the PCB board (30) is provided with a buckle that matches the card slot, and when the front end of the PCB board (30) is fixed in cooperation with the mounting groove (211), the buckle is buckled with the card slot.

4. The battery pack that is easy to install according to claim 3, characterized in that: The lower shell (21) is provided with a supporting boss (212) protruding upward (201), and the mounting groove (211) is located at the top of the supporting boss (212).

5. The battery pack that is easy to install according to claim 1, characterized in that: The plurality of battery cells (10) are arranged in an array below the upper housing (20), and the auxiliary mounting member (40) is located in the middle of the upper housing (20) so that the PCB board (30) can be installed in the middle between the plurality of battery cells (10).

6. The battery pack that is easy to install according to claim 5, characterized in that: The auxiliary mounting member (40) is provided with a plurality of positioning holes (401) at intervals, and the PCB board (30) is inserted into different positioning holes (401) on the auxiliary mounting member (40) so that the temperature sensor (50) detects the temperature at different positions of the battery cell (10).

7. The battery pack that is easy to install according to claim 6, characterized in that: The PCB board (30) is a long strip structure, and the temperature sensor (50) can be fixed at positions at different heights of the PCB board (30) to detect the temperature of the battery cell (10) at positions at different heights.

8. The battery pack that is easy to install according to claim 7, characterized in that: The temperature sensor (50) is provided with one temperature sensor (50), which is fixed on the PCB board (30) at a position at the middle height of the battery cell (10) to detect the temperature at the middle height of the battery cell (10).

9. The battery pack that is easy to install according to claim 7, characterized in that: The temperature sensor (50) and the PCB board are both provided in plurality, the plurality of PCB boards are installed in different positioning holes (401) on the auxiliary mounting member (40), and the plurality of temperature sensors (50) can be fixed on different PCB boards (30) to detect the temperature at different positions of the battery cell (10).

10. The easy-to-install battery pack according to claim 1, characterized in that: The temperature sensor (50) comprises an external wire (51), and the auxiliary mounting member (40) is provided with a through hole for the external wire (51) to pass through.

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