CN213780317U - Battery fault simulation device - Google Patents
Battery fault simulation device Download PDFInfo
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- CN213780317U CN213780317U CN202022578686.6U CN202022578686U CN213780317U CN 213780317 U CN213780317 U CN 213780317U CN 202022578686 U CN202022578686 U CN 202022578686U CN 213780317 U CN213780317 U CN 213780317U
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Abstract
The utility model relates to a battery fault simulation technical field, concretely relates to battery fault simulation device. The device includes the controller, still includes: the inter-cell circuit breaking simulation unit comprises a first switch bridged between the Nth cell monomer and the (N + 1) th cell monomer; a short circuit simulation unit including a second switch connected across the fault terminal and the controller; the circuit breaking simulation unit comprises a third switch connected between the controller and the Nth battery monomer in a bridging manner; the polarity inversion simulation unit comprises a fourth switch and a fifth switch, wherein a normally open contact of the fourth switch is connected with the negative electrode of the Nth battery cell, and a normally closed contact of the fourth switch is connected with the positive electrode; a normally open contact of the fifth switch is connected with the anode of the (N + 1) th battery cell, and a normally closed contact and a common end thereof are bridged between the anode of the nth battery cell and the normally closed contact of the fourth switch; the controller controls the on and off of the corresponding switch in each unit to simulate the corresponding fault state. The simulation device is capable of simulating multiple channels in parallel at a time.
Description
Technical Field
The utility model relates to a battery fault simulation technical field, concretely relates to battery fault simulation device.
Background
The new energy automobile has a wide development prospect and can be a main transportation tool in the future world. The new energy automobile is widely considered as one of the main ways for solving the problems of automobile exhaust pollution, petroleum energy shortage and the like, and along with the improvement of the technology, the popularization and the rapid development of the new energy automobile, increasingly higher requirements are provided for the product performance, the reliability and the safety of key parts of the new energy automobile. The power battery and the battery management system are used as core components of the new energy electric automobile, the power battery is responsible for energy supply and storage of the automobile, the service life and safety of the electric automobile are directly influenced by the performance of the power battery, the battery management system (generally adopting a distributed structure and consisting of a main control board and a plurality of slave control boards) matched with the power battery controls the complex charging and discharging process of the power battery, and the power battery management system plays a decisive role in ensuring the safety and high-efficiency operation of the power battery.
It is very necessary to perform a comprehensive performance test on the whole power battery pack and a comprehensive function test on the battery management system before loading.
In practice, the inventors found that the above prior art has the following disadvantages:
the existing fault simulation method can only simulate the fault state of one single battery at a time, and the simulation circuit is relatively complex.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, an object of the utility model is to provide a battery fault simulation device, the technical scheme who adopts specifically as follows:
a battery failure simulation apparatus for simulating failure states between an Nth battery cell and an N-channel, and between the Nth battery cell and an (N + 1) th battery cell, the apparatus comprising a controller, and further comprising, for the Nth battery cell:
the inter-cell circuit breaking simulation unit comprises a first switch, wherein the first switch is bridged between the Nth cell and the (N + 1) th cell;
the short circuit simulation unit comprises a second switch, and the second switch is connected between a fault end and the controller in a bridging mode;
the circuit breaking simulation unit comprises a third switch, and the third switch is connected between the controller and the battery cell in a bridging mode; and
the polarity inversion simulation unit comprises a fourth switch and a fifth switch, wherein a normally open contact of the fourth switch is connected with the negative electrode of the Nth single battery, and a normally closed contact of the fourth switch is connected with the positive electrode of the Nth single battery; a normally open contact of the fifth switch is connected with the anode of the (N + 1) th battery cell, and a normally closed contact of the fifth switch and a common end of the normally closed contact are bridged between the anode of the nth battery cell and the normally closed contact of the fourth switch;
the controller controls the on-off of corresponding switches in the inter-cell open circuit simulation unit, the short circuit simulation unit, the open circuit simulation unit and the polarity reversal simulation unit so as to simulate corresponding fault states.
Further, the common terminal of the fourth switch is connected with the terminal of the third switch far away from the controller.
Further, the common terminal of the fourth switch is connected with the terminal of the second switch far away from the fault terminal.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
the utility model discloses a battery fault analogue means, every passageway of controller can simulate multiple trouble, including the simulation of opening a circuit between battery monomer, the simulation of the free short circuit of battery, the simulation of opening a circuit between battery monomer and the controller and the simulation of the free polarity reversal of battery. The simulation device can simulate a plurality of channels in parallel at a time, and the simulation circuit is simple.
Drawings
In order to more clearly illustrate the technical solutions and advantages of the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive work.
Fig. 1 is a schematic structural diagram of a battery failure simulation apparatus according to an embodiment of the present invention.
Detailed Description
To further illustrate the technical means and effects of the present invention for achieving the intended purpose of the present invention, the following detailed description of the battery failure simulation apparatus according to the present invention with reference to the accompanying drawings and preferred embodiments will be given below. In the following description, different "one embodiment" or "another embodiment" refers to not necessarily the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
It will be understood that when an element is referred to as being "disposed" or "connected" to another element, it can be directly on the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The following describes specifically a specific scheme of the battery fault simulation device provided by the present invention with reference to the accompanying drawings.
Please refer to fig. 1, which shows a schematic structural diagram of a battery failure simulation apparatus according to an embodiment of the present invention, which aims to solve the technical problems that the existing failure simulation method can only simulate the failure state of a battery cell at every time and the simulation circuit is relatively complex, and the present invention provides a battery failure simulation apparatus, which allows a battery cell of an electric vehicle to collect an electrical failure when a wire harness is used to simulate a battery management system to collect power battery information through the failure simulation apparatus.
Suppose the battery simulation apparatus is used for simulating the Nth battery cell CNFault state of with the Nth cell CNThe adjacent battery monomer is called as the (N + 1) th battery monomer CN+1. The Nth battery monomer CNThe positive voltage output end of the controller is connected with one I/O port of the controller, and the connected channel is called an N channel.
Specifically, the fault simulation device is used for simulating the Nth battery monomer CNBetween the controller and the Nth battery monomer CNAnd the (N + 1) th battery monomer CN+1A fault condition in between. The fault simulation device comprises a controller for the Nth battery monomer CNThe fault simulation device further comprises a single-cell open circuit simulation unit, a short circuit simulation unit, an open circuit simulation unit and a polarity inversion simulation unit.
More specifically, the monomer non-circuit simulation unit comprises a monomer C connected across the Nth batteryNAnd the (N + 1) th battery monomer CN+1The first switch K1 between, the first switch K1 is a normally closed switch. The controller is used for controlling the first switch K1 to be switched off so as to realize the simulation of the Nth battery CNAnd the (N + 1) th cell CN+1An open circuit fault condition between stages.
The short circuit simulation unit comprises a second switch K2 connected across the fault terminal F and the controller, and the second switch K2 is a normally open switch. And controlling the second switch K2 to be closed by using the controller so as to realize the short-circuit fault state of the analog controller to the fault terminal F. Wherein, the fault end signal is grounded or the power supply.
The circuit breaking simulation unit comprises a controller and an Nth battery monomer C connected in a bridging mannerNThe third switch K3 between, the third switch K3 is a normally closed switch. And controlling the third switch K3 to be switched off by using the controller so as to realize the short-circuit fault state between the analog controller and the Nth battery cell K3.
The polarity-inverting analog unit includes a fourth switch K4 and a fifth switch K5. The fourth switch K4 comprises a normally open contact 4b and a normally closed contact 4a, wherein the normally open contact 4b of the fourth switch K4 is connected with the Nth battery cell CNIs connected with the negative pole of the fourth switch K4, and the normally closed contact 4a of the fourth switch K4 is connected with the nth battery cell CNThe positive electrodes of (a) and (b) are connected. The fifth switch K5 comprises a normally open contact 5b and a normally closed contact 5a, wherein the normally open contact 5b of the fifth switch K5 is connected with the (N + 1) th battery cell CN+1The normally closed contact 5a and the common end of the fifth switch K5 are connected across the Nth battery cell CNAnd the normally closed contact 4a of the fourth switch K4. The controller is utilized to control the normally closed contact 4a of the fourth switch K4 to be opened and the normally open contact 4b to be closed, and the normally closed contact 5a of the fifth switch K5 to be opened and the normally open contact 5b to be closed, so that the simulation of the Nth battery cell C is realizedNThe polarity of the positive and negative voltage output terminals is reversed.
To sum up, the utility model discloses a battery fault analogue means, every passageway of controller can simulate multiple trouble, including the simulation of opening a circuit between the battery monomer, the simulation of the short circuit of battery monomer, the simulation of opening a circuit between battery monomer and the controller and the simulation of the polarity reversal of battery monomer. The simulation device can simulate a plurality of channels in parallel at a time, and the simulation circuit is simple.
Preferably, the common terminal of the fourth switch K4 is connected to the terminal of the third switch K3 remote from the controller.
Preferably, the common terminal of the fourth switch K4 is connected to the terminal of the second switch K2 remote from the fault terminal F.
In the present embodiment, the first switch K1, the second switch K2, the third switch K3, the fourth switch K4, and the fifth switch K5 all adopt relays and are controlled by different I/O ports of the controller.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (3)
1. A battery failure simulation device for simulating the failure states between the Nth battery cell and an N channel and between the Nth battery cell and an (N + 1) th battery cell is characterized by comprising a controller and further comprising for the Nth battery cell:
the inter-cell circuit breaking simulation unit comprises a first switch, wherein the first switch is bridged between the Nth cell and the (N + 1) th cell;
the short circuit simulation unit comprises a second switch, and the second switch is connected between a fault end and the controller in a bridging mode;
the circuit breaking simulation unit comprises a third switch, and the third switch is connected between the controller and the Nth battery monomer in a bridge mode; and
the polarity inversion simulation unit comprises a fourth switch and a fifth switch, wherein a normally open contact of the fourth switch is connected with the negative electrode of the Nth single battery, and a normally closed contact of the fourth switch is connected with the positive electrode of the Nth single battery; a normally open contact of the fifth switch is connected with the anode of the (N + 1) th battery cell, and a normally closed contact of the fifth switch and a common end of the normally closed contact are bridged between the anode of the nth battery cell and the normally closed contact of the fourth switch;
the controller controls the on-off of corresponding switches in the inter-cell open circuit simulation unit, the short circuit simulation unit, the open circuit simulation unit and the polarity reversal simulation unit so as to simulate corresponding fault states.
2. The battery fault simulator of claim 1, wherein the second switch is connected to a common terminal of the fourth switch.
3. A battery fault simulation apparatus according to claim 1 or 2, wherein the third switch is connected to a common terminal of the fourth switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022578686.6U CN213780317U (en) | 2020-11-10 | 2020-11-10 | Battery fault simulation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022578686.6U CN213780317U (en) | 2020-11-10 | 2020-11-10 | Battery fault simulation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213780317U true CN213780317U (en) | 2021-07-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022578686.6U Active CN213780317U (en) | 2020-11-10 | 2020-11-10 | Battery fault simulation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213780317U (en) |
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2020
- 2020-11-10 CN CN202022578686.6U patent/CN213780317U/en active Active
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