Battery pack signal sampling device

Abstract

The utility model relates to the technical field of battery packs, and discloses a battery pack signal sampling device which comprises a shell. The battery cell assembly is arranged in the shell, and the battery cell assembly comprises a plurality of battery cells; the battery cell assembly is arranged on one side of the adapter plate and is electrically connected with the adapter plate, sampling units are integrated on the adapter plate, the sampling units correspond to the battery cells in a one-to-one mode and are electrically connected with the battery cells, the sampling units generate sampling signals corresponding to the battery cells, and the sampling signals correspond to the battery cells. The sampling unit at least comprises a voltage sensor and a temperature sensor; the protection plate is arranged on the other side of the adapter plate and is used for controlling charging and discharging of the battery core assembly and protecting overcurrent and overload; wherein the adapter plate is electrically connected with the protection plate through a pluggable connector, and the connector is used for transmitting the sampling signal. According to the utility model, battery cell connection and signal sampling can be realized through the layout without wire harnesses.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of battery pack, concretely relates to a battery pack signal sampling device. BACKGROUND

[0002] With the wide use of household appliances, the battery pack as the output energy part is particularly important. In order to meet the requirements of high power and long time work, most battery packs are composed of multiple battery cells in series and parallel combination. In order to make the work of battery cells more balanced, prolong the service life of the battery pack and improve the use experience of consumers, it is necessary to collect the voltage of each string of battery cells and the temperature of the battery pack.

[0003] The safety of the battery pack depends on the temperature and voltage collection and monitoring of the battery cells, and most soft pack battery packs and some steel shell battery packs currently connect the adapter board and the protection board used for signal sampling through a wire harness. The connection and collection are realized by the wire harness, which occupies a large space and is compact in internal structure. During transportation and use, the wire harness may be crushed or worn, thereby causing a short circuit problem. SUMMARY

[0004] In order to solve the problems of the prior art, the utility model provides a battery pack signal sampling device, which is connected by a connector plug-in design to avoid damage due to the protrusion of the wire harness and to realize the effect of sampling the signals of the battery cells.

[0005] The technical effects achieved by the utility model are realized through the following aspects:

[0006] The utility model provides a battery pack signal sampling device, which comprises a shell, a battery cell assembly arranged in the shell, the battery cell assembly comprising a plurality of battery cells, an adapter board, the battery cell assembly being arranged on one side of the adapter board and being electrically connected to the adapter board, a sampling unit being integrated on the adapter board, the sampling unit corresponding to and being electrically connected to the battery cells one by one, the sampling unit generating sampling signals of the corresponding battery cells, the sampling unit comprising at least a voltage sensor and a temperature sensor, and a protection board arranged on the other side of the adapter board and used for controlling the charging and discharging of the battery cell assembly and protecting against overcurrent and overload.

[0007] In some implementations, the connector comprises a female header and a male header, the adapter board is provided with the female header, the protection board is provided with the male header, and the male header and the female header are plug-in connected.

[0008] In some implementations, the connector comprises a female header and a male header, the adapter board is provided with the female header, the protection board is provided with the male header, and the male header and the female header are plug-in connected.

[0009] In some implementations, the busbar is arranged at an edge of the adapter plate or the protection plate.

[0010] In some implementations, a window is arranged on the shell near a side of the connector.

[0011] In some implementations, the adapter plate further comprises two polar posts and a plurality of sampling terminals, and the sampling unit is arranged on the sampling terminals or near a side of the sampling terminals.

[0012] In some implementations, the sampling terminals are provided with grooves, and the electrodes of the battery cells are inserted into the grooves to achieve electrical connection.

[0013] In some implementations, the protection plate is provided with two through holes, the shell is provided with two output ports, and the polar posts extend to the outside of the shell through the through holes and the output ports.

[0014] In some implementations, the shell comprises a battery compartment and an upper cover, the battery cell assembly is arranged in the battery compartment, and the protection plate is fixedly arranged in the upper cover.

[0015] In some implementations, an insulating pad is arranged between the adapter plate and the protection plate.

[0016] In summary, the utility model has at least the following advantages:

[0017] The battery pack signal sampling device provided by the utility model realizes electrical connection through the connector between the adapter plate and the protection plate, the sampling unit is arranged on the adapter plate, the battery cell assembly is inserted into the adapter plate to realize electrical connection and signal sampling, the protruding wire harness is prevented from being abraded and short-circuited, the connector occupies small space, and the maintenance cost is low in the later period. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is an exploded structural schematic view of the battery pack signal sampling device of the utility model embodiment 1.

[0019] Figure 2 It is an enlarged structural schematic view of part A of the utility model embodiment 1. Figure 1

[0020] Figure 3 It is an exploded structural partial schematic view of the battery pack signal sampling device of the utility model embodiment 2.

[0021] Figure 4 It is an exploded structural schematic view of the battery pack signal sampling device of the utility model embodiment 2.

[0022] ​Figure 5 It is an explosion structure schematic view of the battery pack signal sampling device of the embodiment 3 of the utility model.

[0023] The marks in the figure are:

[0024] 1, shell; 11, battery compartment; 12, upper cover; 13, output port; 14, window; 2, protection plate; 21, row pin; 22, perforation; 3, adapter plate; 31, row female; 32, pole; 33, sampling end; 4, battery cell assembly; 41, bubble cotton; 5, insulating pad. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model. The described embodiments are part of the embodiments of the utility model, not all of the embodiments.

[0026] Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the utility model.

[0027] Embodiment 1:

[0028] Please refer to Figure 1 and Figure 2 In the embodiment, a battery pack signal sampling device comprises a shell 1; a battery cell assembly 4 is arranged in the shell 1, and the battery cell assembly 4 comprises a plurality of battery cells; an adapter plate 3, the battery cell assembly 4 is arranged on one side of the adapter plate 3 and is electrically connected with the adapter plate 3, the adapter plate 3 is integrated with a sampling unit, the sampling unit corresponds to the battery cells one by one and is electrically connected, the sampling unit generates a sampling signal of the corresponding battery cell, and the sampling unit at least comprises a voltage sensor and a temperature sensor; and a protection plate 2 is arranged on the other side of the adapter plate 3 and is used for controlling charging and discharging of the battery cell assembly 4 and protecting overcurrent and overload; wherein the adapter plate 3 and the protection plate 2 are electrically connected through a pluggable connector, and the connector is used for transmitting the sampling signal.

[0029] Specifically, the battery pack signal sampling device comprises a shell 1, a battery cell assembly 4, a adapter plate 3 and a protection plate 2, the battery cell assembly 4, the adapter plate 3 and the protection plate 2 are all arranged in the shell 1, the battery cell assembly 4 is composed of a plurality of battery cells in series and parallel combination, the battery cell assembly 4 is arranged on one side of the adapter plate 3, and the adapter plate 3 is electrically connected with each battery cell. The adapter plate 3 is provided with a sampling unit for detecting the parameters of the battery cell and generating a corresponding sampling signal, the sampling unit at least includes a voltage sensor and a temperature sensor, and optionally but not limited to a pressure sensor and an electrostatic sensor, the sampling unit is integrally arranged in the adapter plate 3 body structure, reducing the wire harness connection, saving the space occupied in the shell 1, and making the layout more regular. The protection plate 2 is arranged on the other side of the adapter plate 3, the protection plate 2 is used for balancing the voltage of the battery cell assembly 4, preventing overcharging and overdischarging of the battery cell, and also playing a short-circuit protection role. The adapter plate 3 and the protection plate 2 are electrically connected through a pluggable connector, avoiding the use of wire harness transmission between the adapter plate 3 and the protection plate 2, the pluggable connector makes the short-distance transmission more stable, simplifies the assembly of the device, and also facilitates disassembly and replacement, reduces maintenance cost and time.

[0030] In order to better realize the transmission of the sampling signal, in some embodiments, as shown in Figure 2 The connector comprises a pin header 21 and a socket 31, the adapter plate 3 is provided with the socket 31, the protection plate 2 is provided with the pin header 21, and the pin header 21 is connected with the socket 31 through plugging.

[0031] Specifically, the protection plate 2 is provided with a pin header 21 for signal transmission, the pin header 21 is connected with the socket 31 arranged on the adapter plate 3, and the pin header 21 and the socket 31 are designed in the form of pin and hole, so that they can be kept stable when connected, avoiding the need for secondary reinforcement between the connectors, preventing loosening or separation due to external factors such as vibration and collision, the pin header 21 has a plurality of pins, which can transmit signals in a small space, and the arrangement mode of the pins and the corresponding module can be flexibly configured according to the specific structure of the circuit.

[0032] In addition, in some embodiments, the connector comprises a pin header 21 and a socket 31, the adapter plate 3 is provided with the pin header 21, the protection plate 2 is provided with the socket 31, and the pin header 21 is connected with the socket 31 through plugging.

[0033] In order to better layout, in some embodiments, the socket 31 is arranged at the edge of the adapter plate 3 or the protection plate 2.

[0034] Specifically, the socket 31 or the pin header 21 is arranged at the edge of the adapter plate 3 away from the battery cell electrode, avoiding interference with the transmission near the battery cell electrode.

[0035] In the embodiment, the shell 1 of the battery pack signal sampling device can be a one-piece structure, so that the overall structural strength is higher. The shell 1 can also be a split structure, which is convenient for later maintenance. The cell assembly 4 is connected to the adapter plate 3, the adapter plate 3 is electrically connected to each cell, the adapter plate 3 can control the charging or discharging of each cell, and the adapter plate 3 is provided with a sampling unit. The sampling unit at least includes a temperature sensor and a voltage sensor, the sampling unit is connected to each cell, can realize real-time monitoring of the cell, and generates sampling signal data of the corresponding cell. The adapter plate 3 is plugged and matched with the female header 31 through the pin header 21, so as to realize electrical connection with the protection plate 2. The adapter plate 3 and the protection plate 2 are not connected by a wire harness, so that the wire harness is not easy to wear and tear, and the internal short circuit of the battery pack is avoided. In addition, each pin of the pin header can be self-defined, so that the user can conveniently expand the function of the equipment according to the demand. The connector is plugged and matched, which is convenient for maintenance personnel to quickly disassemble and replace the faulty parts, reduces the maintenance cost and time, and the connector transmits the sampling signal to the protection plate 2. The protection plate 2 controls the on-off of the circuit according to the sampling signal, so as to ensure that the cell assembly 4 works within the threshold range.

[0036] Embodiment 2

[0037] The difference between the embodiment and the embodiment 1 is that the structure of the battery pack signal sampling device of the embodiment is further optimized.

[0038] In some embodiments, as shown in Figure 3 A window 14 is arranged on one side of the shell 1 close to the connector.

[0039] Specifically, the shell 1 is provided with a window 14 for observation. The window 14 is arranged close to the connector. The window 14 can be a transparent protective plate or be hollowed out, which is convenient for technicians to assemble and observe. The application does not limit this.

[0040] In some embodiments, please continue to refer to Figure 3 The adapter plate 3 further includes two polar posts 32 and a plurality of sampling ends 33. The sampling unit is arranged on the sampling end 33 or close to one side of the sampling end 33.

[0041] Specifically, the adapter plate 3 is provided with two polar posts 32 for current output or input of the cell assembly 4. The adapter plate 3 is further provided with a plurality of sampling ends 33. Each sampling end 33 is electrically connected to a single corresponding cell electrode. The sampling unit can be arranged on the sampling end 33. The sampling end 33 realizes current transmission and signal sampling of the state of the cell. The sampling unit can also be arranged on one side of the sampling end 33, so as to avoid transmission conflicts. When the sensor of the sampling unit detects that the parameter of the cell exceeds the set threshold value, the adapter plate 3 disconnects the electrical connection between the cell assembly 4 and the polar post 32, thereby playing a protection role.

[0042] In order to make the adapter plate 3 occupy a smaller space, in some embodiments, the sampling end 33 is provided with a groove, and the electrode of the battery cell is inserted into the groove to realize electrical connection.

[0043] Specifically, the sampling end 33 on the adapter plate 3 is provided with a groove, the sampling end 33 is connected to the battery cell in a detachable manner, the electrode of the battery cell is inserted into the groove, thereby realizing the electrical connection between the sampling end 33 and the battery cell, and the groove and the electrode connection on the battery cell are optionally but not limited to interference fit, so as to fix the adapter plate 3 on the battery cell assembly 4 in a static friction manner.

[0044] In some embodiments, the protection plate 2 is provided with two through holes 22, the shell 1 is provided with two output ports 13, and the pole 32 extends to the outside of the shell 1 through the through hole 22 and the output port 13.

[0045] Specifically, the pole 32 on the adapter plate 3 extends outwardly, the protection plate 2 is installed above the adapter plate 3, the pole 32 penetrates the protection plate 2 from the position of the through hole 22 and extends outwardly through the output port 13 on the shell 1, and the through hole 22 is designed to make the utilization rate of the internal space of the shell 1 higher.

[0046] In some embodiments, as shown in Figure 4 The shell 1 includes a battery compartment 11 and an upper cover 12, the battery cell assembly 4 is arranged in the battery compartment 11, and the protection plate 2 is fixedly arranged in the upper cover 12.

[0047] Specifically, the shell 1 is a split structure composed of the battery compartment 11 and the upper cover 12, the bottom of the battery compartment 11 is provided with a limiting part for fixing the battery cell assembly 4, the battery cell assembly 4 is placed in the battery compartment 11, the adapter plate 3 is fixed on the battery cell assembly 4 close to the opening position of the battery compartment 11, the protection plate 2 is fixed on the inner side of the upper cover 12, the protection plate 2 is arranged opposite to the connector on the adapter plate 3, the plug-in electrical connection between the protection plate 2 and the adapter plate 3 is realized through the connection between the battery compartment 11 and the upper cover 12, when the shell 1 is disassembled, the battery compartment 11 is separated from the upper cover 12, the protection plate 2 is disconnected from the adapter plate 3, and the material cost is low in later maintenance and replacement.

[0048] It can be understood that the upper cover 12 and the battery compartment 11 can be optionally but not limited to snap connection, threaded connection. In actual application, other connection modes can also be adopted, so as to facilitate the use of the battery pack signal sampling device, and the application does not limit this.

[0049] The battery pack signal sampling device, the sampling end 33 in contact with the electrode of the battery cell is arranged on the adapter plate 3, and the sampling unit for sampling is arranged on the sampling end 33 or one side of the sampling end 33, so that the circuit layout in the battery pack signal sampling device is simplified, and failure caused by the wire harness being pressed or worn during transportation is avoided. The sampling end 33 is designed in a groove plug-in mode, the electrode of each battery cell is plug-in matched with the groove, electrical connection between the battery cell assembly 4 and the adapter plate 3 is realized, and installation is more convenient. In order to facilitate maintenance of the battery pack signal sampling device by a technician later, the shell 1 is designed in a split mode and is detachably connected, the protection plate 2 and the battery cell assembly 4 are fixed and protected by being separated by the battery compartment 11 and the upper cover 12, and disassembly and assembly for later maintenance are facilitated.

[0050] Embodiment 3:

[0051] In order to prevent the influence on the protection plate 2, in some embodiments, as shown in Figure 5 An insulating pad 5 is arranged between the adapter plate 3 and the protection plate 2.

[0052] Specifically, the adapter plate 3 and the protection plate 2 are separated by the insulating pad 5, the components on the protection plate 2 are separated from the circuit on the adapter plate 3, interference is avoided, and a certain supporting and buffering effect is achieved. The insulating pad 5 can be made of polycarbonate material, but is not limited thereto.

[0053] In order to ensure the stability of the battery cell, in some embodiments, a partition plate is arranged between the battery cells. The partition plate is arranged between each battery cell in the battery cell assembly 4, can effectively avoid mutual interference between the battery cells, can also suppress heat diffusion between adjacent battery cells, and further improves the safety and reliability of the battery.

[0054] In order to ensure the safety of the battery cell assembly 4 during transportation, in some embodiments, the battery cell assembly 4 further comprises bubble cotton 41, and the bubble cotton 41 is arranged on four sides and the bottom of the battery cell assembly 4.

[0055] Specifically, the bubble cotton 41 is arranged on the sides and the bottom between the battery cell assembly 4 and the shell 1, and the bubble cotton 41 arranged on the sides of the battery cell assembly 4 can be arranged in a strip shape and arranged on the sides close to the two ends of the battery cell assembly 4, which not only relieves the friction between the battery cell assembly 4 and the shell 1, but also is beneficial to heat dissipation of the battery cell assembly 4 and vibration buffering during transportation. The bubble cotton 41 can be selected from, but is not limited to, silica gel bubble cotton.

[0056] It can be understood that the shape and arrangement position of the bubble cotton 41 can be determined according to actual conditions, which are not limited in the present application.

[0057] In order to improve the heat dissipation performance of the battery pack signal sampling device, in some embodiments, a plurality of ventilation holes are arranged on the side of the shell 1.

[0058] Specifically, on the opposite sides of the shell 1, a plurality of ventilation holes are arranged to communicate with the outside air, so that the electric cell assembly 4 generates convection heat dissipation, and the heat accumulated by the long-time work of the electric cell assembly 4 does not cause the performance of the electric cell to be reduced.

[0059] In the embodiment, the partition plate is arranged in the electric cell assembly 4 to separate the electric cells, so that the mutual influence between the electric cells is avoided, and the sampled signal is more accurate. When the equipment is transported, the electric cell assembly 4 is fixed in the shell 1, and the foam 41 is arranged on the surface of the electric cell assembly 4 abutting against the shell 1. The foam 41 surrounds and protects the electric cell assembly 4, so that the electric cell assembly 4 is not easily damaged by impact, and the problem of electrolyte leakage caused by the damage of the electric cell is avoided. The insulating pad 5 is arranged between the adapter plate 3 and the protection plate 2 to avoid the interference of the protection plate 2, and the insulating pad 5 plays the role of insulation and isolation. The ventilation holes are arranged on the side surface of the shell 1, so that the battery pack signal sampling device has good heat dissipation effect when working.

[0060] In the present application, unless otherwise clearly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements or the interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0061] In the description of the present application, it should be pointed out that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship commonly used when the product of the present application is used, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element indicated must have a specific orientation, structure and operation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" and the like are only used for description, and cannot be understood as indicating or implying relative importance.

[0062] In addition, the terms "horizontal", "vertical", "suspension" and the like do not mean that the parts must be absolutely horizontal or suspended, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0063] In the utility model, unless another definite provision and limitation, first feature is above or below second feature can include that first and second features are in direct contact, also can include that first and second features are not in direct contact but contact through additional feature between them.

[0064] Although the description of the utility model is combined with above specific embodiment, it is obvious that many substitutions, modifications and changes can be made according to the above-mentioned content by the person skilled in the art. Therefore, all such substitutions, improvements and changes are included in the spirit and scope of the appended claims.

Claims

1. A battery pack signal sampling device, characterized in that, include: case; A battery cell assembly is disposed within the housing, and the battery cell assembly includes a plurality of battery cells; An adapter board is provided, wherein the battery cell assembly is disposed on one side of the adapter board and electrically connected to the adapter board. The adapter board integrates a sampling unit, which corresponds one-to-one with the battery cell and is electrically connected. The sampling unit generates a sampling signal corresponding to the battery cell. The sampling unit includes at least a voltage sensor and a temperature sensor. as well as A protection board, located on the other side of the adapter board, is used to control the charging and discharging of the battery cell assembly and to protect against overcurrent and overload. The adapter board and the protection board are electrically connected via a pluggable connector, which is used to transmit the sampling signal.

2. The battery pack signal sampling device according to claim 1, characterized in that, The connector includes pin headers and female headers. The adapter board is provided with female headers, and the protection board is provided with pin headers. The pin headers are plugged into and connected to the female headers.

3. The battery pack signal sampling device according to claim 1, characterized in that, The connector includes pin headers and female headers. The adapter board is provided with pin headers, and the protection board is provided with female headers. The pin headers are plugged into and connected to the female headers.

4. The battery pack signal sampling device according to any one of claims 2 to 3, characterized in that, The nut is located at the edge of the adapter plate or the protective plate.

5. The battery pack signal sampling device according to claim 1, characterized in that, The housing has a window on the side near the connector.

6. The battery pack signal sampling device according to claim 1, characterized in that, The adapter board also includes two poles and multiple sampling terminals, and the sampling unit is disposed on the sampling terminal or on the side close to the sampling terminal.

7. The battery pack signal sampling device according to claim 6, characterized in that, The sampling end is provided with a groove, and the electrode of the battery cell is inserted into the groove to achieve electrical connection.

8. The battery pack signal sampling device according to claim 6, characterized in that, The protective plate has two perforations, the housing has two output ports, and the pole extends through the perforations and the output ports to the outside of the housing.

9. The battery pack signal sampling device according to claim 1, characterized in that, The housing includes a battery compartment and a top cover, the battery cell assembly is disposed inside the battery compartment, and the protection plate is fixedly disposed inside the top cover.

10. The battery pack signal sampling device according to claim 1, characterized in that, An insulating pad is provided between the adapter plate and the protection plate.

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